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Добірка наукової літератури з теми "Pressure pipelines"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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Статті в журналах з теми "Pressure pipelines"

Peletiri, Suoton, Nejat Rahmanian, and Iqbal Mujtaba. "CO2 Pipeline Design: A Review." Energies 11, no. 9 (August 21, 2018): 2184. http://dx.doi.org/10.3390/en11092184.

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There is a need to accurately design pipelines to meet the expected increase in the construction of carbon dioxide (CO2) pipelines after the signing of the Paris Climate Agreement. CO2 pipelines are usually designed with the assumption of a pure CO2 fluid, even though it usually contains impurities, which affect the critical pressure, critical temperature, phase behaviour, and pressure and temperature changes in the pipeline. The design of CO2 pipelines and the calculation of process parameters and fluid properties is not quite accurate with the assumption of pure CO2 fluids. This paper reviews the design of rich CO2 pipelines including pipeline route selection, length and right of way, fluid flow rates and velocities, need for single point-to-point or trunk pipelines, pipeline operating pressures and temperatures, pipeline wall thickness, fluid stream composition, fluid phases, and pipeline diameter and pressure drop calculations. The performance of a hypothetical pipeline was simulated using gPROMS (ver. 4.2.0) and Aspen HYSYS (ver.10.1) and the results of both software were compared to validate equations. Pressure loss due to fluid acceleration was ignored in the development of the diameter/pressure drop equations. Work is ongoing to incorporate fluid acceleration effect and the effects of impurities to improve the current models.

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Cui, Ying, Jun Fang, Zhan Qu, Meimei Song, and Junhai Zhao. "Research on Damage Assessment of Buried Standard and Carbon-Fibre-Reinforced Polymer Petroleum Pipeline Subjected to Shallow Buried Blast Loading in Soil." Shock and Vibration 2021 (August 17, 2021): 1–19. http://dx.doi.org/10.1155/2021/1459260.

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Buried petroleum pipelines may encounter threats from blast loading due to terrorist attacks, accidental explosions, and artificial blasting during in-progress construction. Carbon-fibre-reinforced polymer (CFRP) is often used for the repair and reinforcement of buried petroleum pipelines. It is meaningful and necessary to distinguish the different responses and establish an effective damage assessment method for standard petroleum pipelines and CFRP-supported petroleum pipelines buried in soil under blast loading. In this study, under fixed end constraints, experimental analysis and numerical simulations were combined to assess the damage of a standard petroleum pipeline and a CFRP petroleum pipeline buried in soil under blast loading. The results showed that, for a scaled distance of 0.19 m/kg1/3, plastic deformation occurred on the surfaces of the two pipelines facing the explosive. The antiexplosion performance of the CFRP pipeline was better than that of the standard pipeline, and the CFRP sheets had a positive effect on the protection of the buried petroleum pipeline during the buried blast loading. Furthermore, based on pressure-impulse damage theory and with consideration of the feasibility under real circumstances, two pressure-impulse damage evaluation curves for standard and CFRP pipelines facing explosive loads were established separately based on a new critical ratio of the dent depth and length. Finally, based on the two pressure-impulse damage evaluation curves and the new critical ratio, two pressure-impulse damage criteria for these two buried petroleum pipelines were defined. Moreover, with the two pressure-impulse damage evaluation curves, mathematical formulae for the two different buried petroleum pipelines were established to generate pressure-impulse diagrams. With the established formulae, the damage to the standard buried pipeline and the CFRP pipeline could be evaluated effectively. Damage to other similar standard pipelines or CFRP pipelines buried in soil with different design parameters due to shallow buried blast loading could also be evaluated using this method.

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Feng, Chunjian, Hang Wu, and Xin Li. "Buckling Analysis of Corroded Pipelines under Combined Axial Force and External Pressure." Metals 12, no. 2 (February 10, 2022): 308. http://dx.doi.org/10.3390/met12020308.

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Affected by a complex environment, corrosion is a common defect in steel pipelines. Moreover, steel pipelines are subjected to large axial forces during their installation and operation. Corroded deep-sea steel pipelines are prone to local buckling under complex loads. Therefore, in view of this problem, the collapse response of corroded steel pipelines under the combined axial force and external pressure is analyzed in detail. First, a formula for evaluating the collapse pressure of corroded steel pipelines under external pressure and axial force is proposed. Then, the factors affecting the collapse pressure of the steel pipeline are parameterized by using the finite element method. The accuracy of the finite element model is proved by collapse tests of the corroded steel pipeline. As shown in finite element results, the diameter-to-thickness ratio, initial ovality and corrosion defect size have significant effects on the buckling response of a steel pipeline. The collapse pressure of the steel pipeline decreases as the axial force increases. Finally, based on the finite element simulation results, the parameter variables in the evaluation formula are obtained.

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Liu, Peng, Shi Yuan Wu, and Le Kang. "Upheaval Buckling Analysis of Buried Offshore Pipelines under High Temperature and High Pressure." Advanced Materials Research 919-921 (April 2014): 292–95. http://dx.doi.org/10.4028/www.scientific.net/amr.919-921.292.

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Nonlinear finite element upheaval buckling model of buried offshore pipelines under HT/HP is built using ABAQUS. The petroleum is defined as uniform flow; temperature field of offshore pipelines produced in the process of petroleum transportation is obtained by heat transfer analysis; offshore pipelines are buried in trench of sandy seabed, interaction between seabed and offshore pipelines is defined as friction, seabed interaction with offshore pipelines will limit the movement of offshore pipelines; coupled fluid-structure analysis for three phase model of oil-pipe-soil is conducted to obtain stress under HT/HP. Initial imperfection of pipeline is introduced to calculate upheaval buckling of buried offshore pipeline under HT/HP. Through numerical analysis, the axial force of pipelines under HT/HP is obtained and thus resulted in upheaval buckling.

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Li, Meng, Hong Zhang, Meng Ying Xia, Kai Wu, Jing Tian Wu, and Xiao Ben Liu. "Effect of Steel Properties on Buckling Pressure of Corroded Pipelines." Materials Science Forum 898 (June 2017): 741–48. http://dx.doi.org/10.4028/www.scientific.net/msf.898.741.

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Due to the harsh environment for submarine pipelines, corrosion damage of the pipeline steels is inevitable. After the corrosion damage, pipelines are prone to failure and may cause serious consequences. The analysis of the effects of different steel properties on the collapse pressure of pipelines with corrosion defects is of importance for the option of appropriate pipeline and avoiding accidents. Based on the finite element method, the finite element model of the pipeline with defects under external pressure was built. Firstly, the accuracy of the numerical model was validated by comparing with previous experimental results. The effects of yield strength and strain hardening exponent on collapse pressure of pipelines with different sizes of defect were discussed in detail. Results showed that the yield strength and strain hardening exponent have different influences on collapse pressure: the collapse pressure increases with the increasing yield strength, and the collapse pressure decreases with the increasing strain hardening exponent.

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Chen, Peng Chao, Hong Zhang, and Hong Ju Wang. "Studies on MAaximum Hydrostatic Testing Pressure for New Pipeline." Applied Mechanics and Materials 117-119 (October 2011): 162–66. http://dx.doi.org/10.4028/www.scientific.net/amm.117-119.162.

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Hydrostatic testing is an important step in pipeline construction. This test ensures the integrity of newly-constructed pipelines. Testing pressures used by Chinese construction contractors are lower than that in foreign countries. Nowadays, higher testing pressure is considered safer for pipeline operation. But what is testing pressure we should apply? Basing on fracture mechanics theory, this paper addresses the effects of testing pressure on pipeline materials, and calculates the maximum safe testing pressure. Also, experiments validate the theoretic conclusions.

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Cherniuk, Volodymyr, Roman Hnativ, Oleksandr Kravchuk, Vadym Orel, Iryna Bihun, and Matvii Cherniuk. "The problem of hydraulic calculation of pressure distribution pipelines." Eastern-European Journal of Enterprise Technologies 6, no. 7 (114) (December 21, 2021): 93–103. http://dx.doi.org/10.15587/1729-4061.2021.246852.

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Most production technologies require a uniform flow path of liquid from pressure distribution pipelines. To achieve this goal, it is proposed to introduce polymer additives into the liquid flow or to use converging distribution pipelines with a continuous longitudinal slot in the wall. To reduce the uneven operation of the distribution pipeline during discrete liquid dispensing, it is proposed to use cylindrical output rotary nozzles with a lateral orthogonal entry of the jet into the nozzle. The problem is the lack of methods for accurate hydraulic calculation of the operation of distribution pipelines. Adequate calculation methods are based on differential equations. Finding the exact solution of the differential equation of fluid motion with variable path flow rate for perforated distribution pipelines is urgent, because it still does not exist. The available calculation methods take into account only the right angles of separation of the jets from the flow in the distribution pipeline. These methods are based on the assumption that the coefficient of hydraulic friction and the coefficient of resistance of the outlets are constant along the flow. A calculation method is proposed that takes into account the change in the values of these resistance coefficients along the distribution pipeline. The kinematic and physical characteristics of the flow outside the distribution pipeline are also taken into account. The accuracy of calculating the value of the flow rate of water distributed from the distribution pipeline has been experimentally verified. The error in calculating the water consumption by the method assuming that the values of the resistance coefficients are unchanged along the distribution pipeline reaches 18.75 %. According to the proposed calculation method, this error does not exceed 6.25 %. However, both methods are suitable for the design of pressure distribution pipelines, provided that the jet separation angles are straight. Taking into account the change from 90° to 360° of the angle of separation of the jets from the flow in the distribution pipeline will expand the scope and accuracy of calculation methods.

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Malysheva, Anna. "Environmental justification of the distribution of pressure drop in a dead-end low-pressure gas network." E3S Web of Conferences 258 (2021): 08015. http://dx.doi.org/10.1051/e3sconf/202125808015.

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The gas supply system is determined by the classes of the elements of the gas transmission network associated with the pressure of the pumped natural gas. Laying gas pipelines in urban areas requires sufficient space around the pipes as a safety zone. The gas pipelines of the first level include gas communications in which the methane pressure is high or medium. To eliminate dead-end sections, gas pipelines are backed up (duplicating individual segments or ringing). The creation of a dead-end network is allowed only in small settlements. Dead-end network is a gas pipeline branching in various directions to gas consumers. Each section of the branched network has a one-way power supply.

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Zhu, Bin, Yong Su, and Zhi Gang Li. "Simulation of Cavitation Erosion in Different Throttling Pipelines." Advanced Materials Research 499 (April 2012): 288–92. http://dx.doi.org/10.4028/www.scientific.net/amr.499.288.

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There often exists cavitation erosion, large energy loss and big noise in throttling pipelines. In this study, the three-dimensional (3D) model of the secondary throttling pipeline was constructed according to the actual structure and parameters. Adopting the finite element method (FEM) for flow field calculation, the secondary and ordinary throttling pipelines have been calculated respectively under different working conditions, and the distribution maps of velocity and pressure fields in the pipelines have been constructed. The analyzed results demonstrate the applicability of the calculating model. It has also been shown that the cavitation erosion resistance of the secondary throttling pipeline is better than that of the ordinary throttling pipeline. Cavitations first appear at the entrance of throttling pipelines, and as the pressure difference between the two ends increases, the cavitations appears inwards. This result is significant for choosing and designing the throttling pipelines.

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Li, Yan, Wen Wang, Zhanfeng Chen, Weipeng Chu, Huijie Wang, He Yang, Chuanyong Wang, and Yuxing Li. "Burst Pressure Prediction of Subsea Supercritical CO2 Pipelines." Materials 15, no. 10 (May 11, 2022): 3465. http://dx.doi.org/10.3390/ma15103465.

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To improve transportation efficiency, a supercritical CO2 pipeline is the best choice for large-scale and long-distance transportation inshore and offshore. However, corrosion of the pipe wall will occur as a result of the presence of free water and other impurities present during CO2 capture. Defects caused by corrosion can reduce pipe strength and result in pipe failure. In this paper, the burst pressure of subsea supercritical CO2 pipelines under high pressure is investigated. First, a mechanical model of corroded CO2 pipelines is established. Then, using the unified strength theory (UST), a new burst pressure equation for subsea supercritical CO2 pipelines is derived. Next, analysis of the material’s intermediate principal stress parameters is conducted. Lastly, the accuracy of the burst pressure equation of subsea supercritical CO2 pipelines is proven to meet the engineering requirement by experimental data. The results indicate that the parameter b of UST plays a significant role in determining burst pressure of pipelines. The study can provide a theoretical basis and reference for the design of subsea supercritical CO2 pipelines.

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Дисертації з теми "Pressure pipelines"

Nsanzubuhoro, Rene. "Pressure-based leakage characterisation of bulk pipelines." Doctoral thesis, Faculty of Engineering and the Built Environment, 2019. http://hdl.handle.net/11427/30938.

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Water losses in distribution systems are a huge problem internationally and also in South Africa where more than a third of the water entering the water supply networks is lost through pipe leaks. With water demand increasing due to population growth and urbanisation, water resources are under greater stress and water supply failures are becoming more common. A great deal of work has been done over the past two decades on managing water losses in distribution systems. The Water Loss Task Force of the International Water Association (IWA) played a leading role in this effort, with the “IWA water balance” now widely used as a basis in municipal water loss programs. One of the areas that have received relatively little attention is leakage on bulk pipeline systems. Bulk pipelines connect water treatment plants to bulk reservoirs and distribute water from reservoirs to different towns or water supply zones. Bulk pipes may be operated using pumps or gravity, and generally do not supply consumers directly. It is difficult to determine what the water losses in a bulk pipeline are, as the high flow rates make it impractical or prohibitively expensive to measure flow rates at both ends of these pipelines. Cheaper solutions, such as clamp-on ultrasonic flow meters or reservoir drop tests, are prone to problems and do not have the required accuracy. Due to the lack of reliable and effective methods, water losses on bulk pipes are often assumed to be 2 or 3 %. However, these losses may, in fact, be much greater, and due to the large flow of water transported by bulk pipelines, even small fractions of losses represent large volumes of water. The aim of this project was to develop a method for identifying the size and type of leak present in real bulk water pipelines with minimal disturbance to the operation of the infrastructure. This was achieved by developing a mobile device called the pipe condition assessment equipment (PCAE), which uses pressure testing in combination with the latest models on the behaviour of leaks areas with pressure to assess the condition of the bulk pipeline. To verify the efficacy of the PCAE, the device was first tested on three uPVC pipes with known leakage characteristics in the laboratory (a 12mm round hole, 100mm by 1mm circumferential crack and a 100mm by 1mm longitudinal crack). As expected, the round hole had very small head-area slopes which are negligible, whilst the circumferential crack showed a negative head area slope and the longitudinal crack portrayed a large positive head-area slope. These results were consistent with previous laboratory experiments that investigated the behaviour of round holes and longitudinal and circumferential cracks. Bulk water suppliers and municipalities were then approached to take part in the study. Several bulk pipelines were tested using the PCAE. The results of the field test are discussed in terms of the pre-testing procedures to prepare for the tests, their repeatability and the effectiveness of the device to detect, quantify and characterise leakage on the pipeline. For pipelines with undetectable leakage, a non-intrusive technique that uses a dynamic pressure drop signature from an isolated pipe, to detect and quantify undetectable leakage, was developed. The leakage characteristics of the isolated pipe were estimated from the pressure vs time data. In summary, if the pressure remained constant the pipe was without a leak. If the pressure dropped, a novel mathematical model was fitted to the pressure vs time curve, using the known pipe properties, to determine the characteristics of the leak or leaks present in the pipe. Overall, the PCAE was capable of assessing the extent of leakage on a range of pipe materials, diameters and lengths. It was found that out of the eleven bulk pipelines tested in this study, three could not be tested due to dysfunctional isolation valves and failed connection points. The other eight pipelines that were successfully tested were found to be leaking. The effective initial leak areas for the tested pipelines ranged from 4.88mm2 to 137.66mm2 , whilst the effective head-area slope ranged from 0.0032 mm2 /m to 3.14 mm2 /m and the N1 leakage exponents were found to range from 0.56 up to 1.09. Finally, since there are no well-founded performance indicators for bulk systems, this study also described the findings from analyses of several potential performance indicators using the data from the bulk pipelines tested using the PCAE. The challenges in comparing water losses of different bulk pipelines are highlighted. Based on this, it was found that because every bulk pipeline has its unique characteristic regarding structural parameters such as diameter, pipe material, type of couplings, and operating pressure, the preferred performance indicator for assessing water losses in bulk systems mainly depends on the purpose of the analysis.

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Bradley, Michael S. A. "Prediction of pressure losses in pneumatic conveying pipelines." Thesis, University of Greenwich, 1990. http://gala.gre.ac.uk/14606/.

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Анотація:

This project arose out of a need to improve the accuracy with which the pressure drop along pneumatic conveying pipelines in process plant could be predicted. The methods previously available for making this prediction are examined and critically assessed. The need for a different method is shown, and a new approach is developed and tested. The new approach involves testing of the product to be conveyed, in a test pipeline at the smaller end of the industrial scale, with measurements being made of the pressure drop caused by bends and of the pressure gradients in straight lengths; the data is fed into a storage and retrieval system then extracted and used to predict the pressure drop in a plant pipeline conveying the same product. The method has been developed to the point where it is in current use for the design of pneumatic conveying systems for industrial applications. The development of a suitable test rig, the data storage and retrieval systems, and the method for predicting the pressure drop in a plant pipeline, are examined in detail. The method is tested against data from pipeline loops and found to give good results. A quantitative comparison is made against the work of other authors in the field; the results of this show good agreement although the scope of the current work is much wider than anything comparable. An assessment is also made of the areas requiring further work. A major advantage of the method lies in its use to predict the pressure drop along pipelines having steps up in bore size along their length, which were not amenable to treatment by previous methods. The advantages of such systems and the consequent value of the method are examined in detail.

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Fallqvist, Björn. "Collapse of thick deepwater pipelines due to hydrostatic pressure." Thesis, KTH, Hållfasthetslära (Inst.), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174084.

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The collapse-behaviour of pipes was to be studied by use of Finite Element modelling.Existing analytical expressions for collapse were evaluated and especially the one used inDNV-OS-F101 was decided to be studied in comparison with FE-model results.Parameters that may influence the collapse capacity and are not included in the analyticalexpressions –flattening, peaking, eccentricity, local wall thickness variation, materialstress-strain curve, residual stresses - were defined and explained. A model was built inthe Finite Element software package Abaqus v6.9.1 and several articles on collapsetesting used to verify it. The aforementioned parameters were studied by use ofsensitivity studies and the results shown and discussed. Effective thickness definitions foruse in the DNV-formula and the DNV-yield stress criterion were discussed in the contextof the results. The results seemed to indicate that the transition between the elastic andplastic range of the material stress-strain curve was of great importance. The results werediscussed in the context of the different collapse-related parameters defined beforehandand some concluding remarks were made on possible further work related to thesefindings.

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Vancko, Robert M. "Effect of a drag reducing agent on pressure drop and flow regime transitions in multiphase horizontal low pressure pipelines." Ohio : Ohio University, 1997. http://www.ohiolink.edu/etd/view.cgi?ohiou1184354301.

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Alzuhd, Tahir Hussein Hasan. "Pressure losses associated with slurry flow in horizontal pipelines." Thesis, University of Hertfordshire, 2003. http://hdl.handle.net/2299/14146.

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The flow of solid liquid mixtures (slurries) has attracted much attention in research work because of its importance to industry. Prediction of pressure losses associated with slurry flow helps pipe designers select the correct pipe sizes for optimum energy consumption, equipment sizing and reliable operation of the pipeline networks. Many workers developed empirical correlations, but due to the randomness of the problem they seem of limited use in design applications because they do not contain an assessment except by trial and error, which is costly. The existence of more than one particle size poses more complexities to the slurry flow problem but it is in need in practical applications. The aims of this work are justified under the light of the observations on the state of the art in slurry transport. An experimental program is designed to highlight the effects of this problem through a predetermined set of test runs. The variables are grouped to optimise the number of experiments and to remove the effect of dimensions on the prediction method The test rig is built to serve the aims of this exercise and test runs conducted, results grouped and discussed for polyfractional slurries. A mathematical model is developed in the form of an empirical correlation. Statistical tests are employed to verify the goodness of fit. Finally, conclusions and recommendations for further work are listed.

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Abbassian, F. "Long-running ductile fracture of high pressure gas pipelines." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372872.

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Sundara, V. "Transient flow dynamics in high pressure carbon dioxide pipelines." Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/1465047/.

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The purpose of this thesis is to model, investigate and where possible validate the impact of Emergency Shutdown Valve (ESDV) closure on mitigating the fugitive releases from failed CO2 pipelines employed as part of the Carbon Capture and Storage (CCS) chain. Additional mathematical modelling work is also presented for simulating steady-state fluid flow and mixing in CO2 pipeline networks containing the various types of impurities representative of the different capture technologies, including pre-combustion, post-combustion and oxyfuel. The pipeline rupture transient flow model, based on the numerical solution of the conservation equations using the Method of Characteristics, incorporates Wu’s Modified Peng-Robinson equation of state to deal with pipelines containing pressurised CO2. It utilises the homogeneous equilibrium flow (HEM) assumption, where the constituent phases in a two-phase mixture are assumed to be in thermal and mechanical equilibrium. The first part of this study focuses on the development and experimental validation of the CFD model for simulating the dynamic response of inline ESDV’s in limiting outflow following the rupture of pressurised pipelines. The model accounts for the pertinent valve characteristics including the activation and closure times as well as its proximity to the rupture location. The validation of the model involves comparison of its predictions against measurements taken following the controlled Full Bore Rupture (FBR) of a 113 m long, 0.15 m i.d. pipeline containing CO2 at 151 bara and 27 oC incorporating a ball valve along its length. The data recorded and simulated include the transient fluid temperatures and pressures immediately upstream and downstream of the closing valve following FBR. Excellent agreement between the two sets of data is obtained throughout the depressurisation process. The above is followed by the linking of the publically available SLAB dispersion model for heavy gas clouds to the validated outflow model. The combined model is then tested against existing experimental data from the CO2Pipetrans research project involving the blowdown of a 30 m long, 0.6 m i.d. of a CO2 pipeline from initial temperatures and pressures ranging 278 to 284 K and 104 to 156 bara respectively. The combined outflow and dispersion model is next used to determine the optimal spacing of ESDVs for CO2 pipelines. This is done by solving an optimisation problem involving trading off the 7 % (vol./vol.) CO2 concentration contour area (concentrations above this are considered fatal) against the cost for valve installation. Level diagrams are then used to determine the optimal separation distance for ESDVs. Finally, the problem of steady-state flow in pipeline networks is analysed. A flow model is developed to determine the required inlet pressure at CO2 source locations to obtain a specific delivery pressure for given source CO2 mixture compositions and flowrates. The model is then used in a realistic case study with two inlet sources and one delivery location. The required inlet pressures at the source locations are determined for given initial feed flowrates and compositions, to attain a desired delivery pressure. In addition, the downstream fluid temperature and fluid compositions are also determined.

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Manouchehri, Soheil. "Behaviour of subsea pipelines subjected to bending and hydrostatic pressure." Thesis, Heriot-Watt University, 2004. http://hdl.handle.net/10399/244.

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Sandford, Richard J. "Lateral buckling of high pressure/high temperature on-bottom pipelines." Thesis, University of Oxford, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.645946.

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On-bottom (or unburied) pipelines) which carry hydrocarbons across the seabed) are typically subjected to compressive axial loading arising from restrained thermal- and pressure-induced expansion. This compressive loading usually causes a nominally straight pipeline to buckle into a mode lying predominantly in the plane of the seabed; this response is widely termed lateral buckling. Predicting the response of an on-bottom pipeline to thermal and pressure-induced axial compressive loading is the primary focus of this thesis. In assessing whether or not the structural integrity of a pipeline is at risk during lateral buckling (and also in the post-buckling regime) finite element analyses are typically carried out. In these analyses) the pipeline is modelled as an assembly of beam elements while the connection between the pipe and the seabed is modelled using a macro-element) which defines the relationship between the loads and displacements of the pipe. In this thesis) the development) calibration and implementation of a macro-element model for use in lateral buckling design is described. The proposed macro-element model accounts for the response during lateral displacement of multiple pipe diameter amplitude (as appropriate to the movement of the crown of a buckle) as well as the reversals in the direction of lateral displacement due to intermittent shut-downs in the operation of the pipe. The model is of the hardening plasticity type and is cast in terms of vertical and horizontal force resultants. Results from numerical analyses (using both finite element limit analysis and the displacement-based incremental finite element method) are used to calibrate the model. Its performance is tested by examining the results of retrospective simulations of experimental tests. Finally) the results of field-representative structural analyses are presented) which demonstrate the suitability of the model for use in design practice.

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Venables, Robert. "Thermal behaviour of transient high pressure hydrocarbon systems." Thesis, Imperial College London, 1997. http://hdl.handle.net/10044/1/8020.

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Книги з теми "Pressure pipelines"

United States International Trade Commission. In the matter of certain pressure transmitters: Investigation no. 337-TA-304 : temporary relief (Commission decision of March 19, 1990). Washington, DC: U.S. International Trade Commission, 1991.

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Commission, United States International Trade. In the matter of certain pressure transmitters: Investigation no. 337-TA-304 : temporary relief (Commission decision of March 19, 1990). Washington, DC: U.S. International Trade Commission, 1991.

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American Society of Mechanical Engineers. Hydrogen piping and pipelines: ASME Code for Pressure Piping, B31. New York, NY: American Society of Mechanical Engineers, 2009.

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Magda, Waldemar. Akumulacja ciśnienia porowego wokół rurociągu podmorskiego zagłębionego w dnie. Gdańsk: Wydawn. Politechniki Gdańskiej, 2006.

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ASME B31 Committee. Gas transmission and distribution piping systems: ASME code for pressure piping, B31. New York, N.Y: American Society of Mechanical Engineers, 1999.

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H, Atkinson J., ed. Guide to the design of thrust blocks for buried pressure pipelines. London: Construction Industry Research and Information Association, 1994.

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Power piping. New York: The Society, 1995.

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United States. National Transportation Safety Board. Over-pressure of Peoples Gas Light and Coke Company low-pressure distribution system, Chicago, Illinois, January 17, 1992. Washington, D.C: National Transportation Safety Board, 1993.

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Board, United States National Transportation Safety. Over-pressure of Peoples Gas Light and Coke Company low-pressure distribution system, Chicago, Illinois, January 17, 1992. Washington, D.C: National Transportation Safety Board, 1993.

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Частини книг з теми "Pressure pipelines"

Bayly, David, and W. D. Loth. "Pressure Specification Break Pipelines." In Advances in Underwater Technology, Ocean Science and Offshore Engineering, 3–24. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1178-2_1.

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Chadwick, Andrew, John Morfett, and Martin Borthwick. "Pressure surge in pipelines." In Hydraulics in Civil and Environmental Engineering, 191–207. 6th ed. Sixth edition. | Abingdon, Oxon ; Boca Raton, FL : CRC Press, 2021.: CRC Press, 2021. http://dx.doi.org/10.1201/9781003026839-7.

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Lindner, Hubert. "Deepwater, High-Pressure and Multidiameter Pipelines-A Challenging in-Line Inspection Project." In Oil and Gas Pipelines, 777–84. Hoboken, New Jersey: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119019213.ch52.

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Dmytriienko, R. I., S. M. Prokopchuk, and O. L. Paliienko. "Inner Pressure Testing of Full-Scale Pipe Samples." In Non-destructive Testing and Repair of Pipelines, 417–29. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56579-8_26.

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Sumbatyan, M. A., Evgeny N. Barkanov, and A. E. Tarasov. "Dynamic Properties of Thin-Walled Structures Under Changing Pressure Conditions in the Contact Fluid." In Non-destructive Testing and Repair of Pipelines, 107–14. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56579-8_8.

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Liu, Jinhai, and Zhibo Yu. "A Filtering Method for Pressure Time Series of Oil Pipelines." In Advances in Brain Inspired Cognitive Systems, 192–97. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-31561-9_21.

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Sami, Elaoud, and Hadj-Taïeb Ezzeddine. "Pressure Waves in Homogeneous Gas-Liquid Mixture Flows in Deformable Pipelines." In Lecture Notes in Mechanical Engineering, 323–30. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-37143-1_39.

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Dvir, Y. "Sizing of Low Pressure Air Valves for Safe Filling and Draining of Pipelines." In Proceedings of the 2nd International Conference on Developments in Valves and Actuators for Fluid Control, 197–209. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-662-11463-6_14.

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Parkins, Redvers N. "High Pressure Gas Pipelines - Their Ageing and Propensity Towards Intergranular Stress Corrosion Cracking Failure." In Ageing Studies and Lifetime Extension of Materials, 3–13. Boston, MA: Springer US, 2001. http://dx.doi.org/10.1007/978-1-4615-1215-8_1.

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Brennecke, P. W., E. W. Justi, and J. Kleinwächter. "The Transmission of Hydrogen in High-Pressure Pipelines and the Storage of Hydrogen in Pipes." In A Solar—Hydrogen Energy System, 217–41. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1781-4_10.

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Тези доповідей конференцій з теми "Pressure pipelines"

Romer, Andrew E., and Richard I. Mueller. "Making Connections to Concrete Pressure Pipe." In Pipelines 2021. Reston, VA: American Society of Civil Engineers, 2021. http://dx.doi.org/10.1061/9780784483619.040.

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Moustafa, Kamal A. F., Gamal M. Nawara, Hesham Elawady, and Mohsen Fouad. "On Leak Detection of Pipelines Using Computational Pipeline Monitoring." In ASME 2008 Pressure Vessels and Piping Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/pvp2008-61691.

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The unintentional release of fluid from pipelines is considered as a leak. Leaks contribute to the environmental pollution, promote corrosion and equipment failures and produce instabilities in the pipeline operation and control. There is a need, therefore, to develop an effective leak diagnosis scheme in pipeline systems that can detect the occurrence of any leak in the system. One objective of this paper is to develop a mathematical model that accounts for the behavior of pressure and flow-rate profiles in pipeline systems with multi leaks. Such a mathematical model is needed to better understand the dynamic behavior of the pipeline and its characteristics and for the detection the leaks. The paper also involves computer simulation of pipeline conditions using the developed mathematical model. A leak detection scheme is developed that is based on a computational pipeline monitoring method. This method evaluates the mismatch between the actual variables and those of the healthy pipeline system. The pipeline conditions during normal operation were simulated and the system state variables were computed in real time based on simulated measurements collected at few selected locations along the pipeline. The underlying pipeline variables are estimated by applying Kalman filtering technique.

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Hall, Sylvia C. "Does My Pressure Pipeline Need Cathodic Protection?" In Pipelines 2020. Reston, VA: American Society of Civil Engineers, 2020. http://dx.doi.org/10.1061/9780784483190.008.

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Knight, Mark A., and George Bontus. "Pressure Testing of CIPP Liners to Failure." In Pipelines 2018. Reston, VA: American Society of Civil Engineers, 2018. http://dx.doi.org/10.1061/9780784481653.048.

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Malekpour, A., and D. McPherson. "Waterhammer Pressure Intensity in House Service Pipelines." In Pipelines 2016. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784479957.106.

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Mueller, Richard I., and Yan Lan. "Designing Concrete Pressure Pipe to Resist Corrosion." In Pipelines 2021. Reston, VA: American Society of Civil Engineers, 2021. http://dx.doi.org/10.1061/9780784483619.032.

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Moustafa, Kamal A. F., Yousef Haik, Saud Aldajah, and Farag Omar. "Leak Localization in Pipelines via Computational Pipeline Monitoring." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25067.

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Leaks in pipelines contribute to the environmental pollution, promote corrosion and equipment failures and produce instabilities in the pipeline operation and control. Leaks are inevitable as third party damage, equipment failures, and errors in pipeline design and operation do occur. Being able to accurately detect the location of leaks is imperative. One objective of this paper is to develop a mathematical model that accounts for the behavior of pressure and flow-rate profiles in leaky pipeline systems. Such a mathematical model is needed to better understand the dynamic behavior of the pipeline and its characteristics and for the detection the leak locations. The paper also involves computer simulation of pipeline conditions using the developed mathematical model and Kalman filtering technique. Leak localization is accomplished by a marching scheme that scans the pipeline from the inlet side to the outlet side to find the location at which the minimum residuals are obtained. Simulation results are reported to demonstrate the effectiveness of the proposed leak localization scheme.

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Eerkes, Eppo. "Holistic Transient Analysis of a Large Pressure Zone." In Pipelines 2018. Reston, VA: American Society of Civil Engineers, 2018. http://dx.doi.org/10.1061/9780784481646.021.

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Shuai, Jian, Wei Liu, Wenping Bu, and Xiaolin Wang. "Failures of Locally Reinforced Pipelines." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57082.

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Enormous attention has been attracted to the safety issues regarding numerous pipelines that have had to be repaired by such local reinforce as welding a tube-cap or patch. The present paper provides a detail description of experimental and numerical research conducted to evaluate the structural condition of locally reinforced pipelines, subjected to internal pressure including cyclic load. Six full-scale pipe specimens are tested under pressure to determine their loading capacity. Their stress distributions are measured, and their stress concentrations and plastic limit loads are analyzed. The result of the present study demonstrates that the burst pressure may not be affected by welding either a tube-cap or patch and cyclic loading, but the plastic limit loads of the repaired pipelines decreased respect to undamaged pipeline, among which the lowest one decreased up to 85% of that of the undamaged pipeline. It is also found that on the pipeline repaired by a single tube-cap or patch the burst occurred away from the welding sites, whereas on the pipeline included several tube-caps in short span the burst took place between the two adjacent tube caps, suggesting that multi-cap repair is disadvantageous to the loading capability of the pipelines. In addition, using nonlinear finite element tools, stresses state in locally reinforced pipeline is calculated. It is showed that bulging occurs in long and narrow area in the pipe along longitudinal direction, addressing where burst rupture occur.

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Young, Winston B. "Advantages of Bladder Surge Tanks in Pipelines." In ASME 2012 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/pvp2012-78613.

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The paper advocates the use of bladder surge tanks to control pressure surges in pipelines created by transient operations. Transient pressures are created as a result of pumps starting and stopping as well as the opening and closing of valves. This paper describes why the utilization of bladder surge tanks is the best solution to transient operations. A bladder surge tank allows piping systems to meet pressure piping codes such as ASME B31.3 and B31.4. Controlling pressure transients reduces pressure stresses, thereby extending the pipeline’s operating life. This paper compares the use of a bladder surge tank to other methods to attenuate pressure transient in pipelines. Generally, water and hydrocarbon pipelines operate safely throughout the world, but failure can occur as a result of pressure transients created by certain operating conditions. In addition, pipe materials are weakened as a result of years of operation and exposure to corrosion, pressure cycling fatigue and over-pressurization. The usable life of piping materials can be significantly reduced by cyclic loading and surge pressure overstressing the material. Therefore, controlling pressure surges will increase pipeline life and reliability. This can be achieved by installing surge control equipment at the location of the transient event.

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Звіти організацій з теми "Pressure pipelines"

Gullerud, Arne. Pipeline Structural Stability Under Nuclear Blast Pressure loading. Office of Scientific and Technical Information (OSTI), March 2021. http://dx.doi.org/10.2172/1814059.

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Ellyson, Alice, and Anirban Basu. The New Prescription Drug Paradox: Pipeline Pressure and Rising Prices. Cambridge, MA: National Bureau of Economic Research, March 2018. http://dx.doi.org/10.3386/w24387.

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Servin, M. A., J. S. Garfield, and G. R. Golcar. FEASIBILITY STUDY OF PRESSURE PULSING PIPELINE UNPLUGGING TECHNOLOGIES FOR HANFORD. Office of Scientific and Technical Information (OSTI), December 2012. http://dx.doi.org/10.2172/1060383.

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Sturzenegger, Germán, Cecilia Vidal, and Sebastián Martínez. The Last Mile Challenge of Sewage Services in Latin America and the Caribbean. Edited by Anastasiya Yarygina. Inter-American Development Bank, November 2020. http://dx.doi.org/10.18235/0002878.

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Access to piped sewage in Latin America and the Caribbean (LAC) cities has been on the rise in recent decades. Yet achieving high rates of end-user connection between dwellings and sewage pipelines remains a challenge for water and sanitation utilities. Governments throughout the region are investing millions in increasing access to sewage services but are failing in the last mile. When households do not connect to the sewage system, the full health and social benefits of sanitation investments fail to accrue, and utilities can face lost revenue and higher operating costs. Barriers to connect are diverse, including low willingness to pay for connection costs and/or the associated tariffs, liquidity and credit constrains to cover the cost of upgrades or repairs, information gaps on the benefits of connecting, behavioral obstacles, and collective action failures. In contexts of weak regulation and strong social pressure, utilities typically lack the ability to enforce connection through fines and legal action. This paper explores the scope of the connectivity problem, identifies potential connection barriers, and discusses policy solutions. A research agenda is proposed in support of evidence-based interventions that have the potential to achieve higher effective sanitation coverage more rapidly and cost-effectively in LAC. This research agenda must focus on: i) quantifying the scope of the problem; ii) understanding the barriers that trigger it; and iii) identifying the most cost-effective policy and market-based solutions.

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