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[Keywords] oil pipeline; control valve; design and implementation CLC number: C912 Document code: A Article ID: 1009-914X(2019)04-0042-01
First, the analysis of the importance of the control valve for the oil pipeline First of all, we must understand the truth, in order to better promote the use of oil and gas must ensure the rationality of oil and gas transportation, then the value of the oil pipeline can enhance the transmission of oil and gas effectiveness. The presence of the valve can control the internal oil and gas flow of the entire pipeline, and the control valve through the oil pipeline can also effectively change the flow direction of the medium and increase the fluidity of the oil and gas. In addition, in the process of transportation, the oil pipeline control valve also plays a role in controlling the opening, closing and pressure regulation of oil and gas transportation, laying a solid foundation for the smooth operation of oil and gas transportation. Therefore, the relevant management personnel must improve the importance of the oil pipeline control valve in the future oil and gas transportation work. Because the oil pipeline control valve is the basis for the smooth progress of the entire work, only the management of the oil pipeline control valve can achieve the professionalism and reliability of oil and gas transportation. In view of the current situation of the development of China's oil pipeline control valves, there are still many potential problems and risks in the work process, because the process of oil and gas transportation is largely affected by temperature and oil properties, resulting in oil and gas Some safety issues are likely to occur during transportation. Therefore, the design of the control valve for the oil pipeline is very important. To ensure that some adverse effects are avoided during the transportation process of the pipeline control valve, it must be considered from various aspects to improve the design method and quality requirements of the control valve [1]. .
II. Analysis of the outer wall material of the oil pipeline control valve The selection of the outer wall material of the oil pipeline control valve is the basis for promoting the smooth progress of the oil and gas transportation process. Only by selecting a reasonable outer wall material of the valve can the reliability of the design of the oil pipeline control valve be ensured. First of all, the relevant management personnel must be comprehensive research on the outer wall structure of the valve and the manufacturing materials to ensure that there are no hidden dangers in the control valve. Therefore, the designer must combine the following four aspects when selecting the material for the outer wall of the valve.
(I) Analysis of thermal conductivity Thermal conductivity is the key to the selection of the material of the outer wall of the oil pipeline control valve. Therefore, in order to ensure the maximum use value of the valve in the oil pipeline, it is necessary to consider the thermal conductivity of the wall material because the outer wall The thermal conductivity of the material can affect the normal use of the valve. Generally, in the process of welding, casting and heat treatment, a certain amount of heat is generated in the pipe wall. Therefore, the designer and the manager must professionally handle the thermal conductivity of the valve, and do not select the outer wall material with good thermal conductivity. Through effective and reasonable control of thermal conductivity, the cracking of the control valve of the oil pipeline can be reduced, thereby improving the work quality and working efficiency of the oil and gas transportation work [2].
(II) Analysis of pressure In all oil and gas transportation processes, the difference between internal and external pressures is too high. If the pressure in the oil pipeline is higher than the pressure outside the pipeline, it will cause the oil pipeline to expand. Therefore, when faced with such problems, we must improve the loopholes in the original design. First, we must understand the pressure inside and outside the pipeline before design, even when the pressure in the pipeline is higher than the pressure outside the pipeline. Effective control, pressure problem is a problem that must be fully considered and understood in the design of the oil pipeline control valve. If the pressure of the inner and outer pipe walls is controlled in the design, the safety of the entire oil pipeline will be greatly improved and avoided. Unnecessary losses occurred.
(III) Analysis of its own characteristics If we study the oil pipeline more deeply, we will also find out the characteristics of the internal materials of the oil pipeline, and it will also have certain corrosion effects on the oil pipeline. This corrosion situation is not easy to find at the beginning, but after a long period of transportation work, the corrosion phenomenon will become more and more serious, and some corrosion will cause immeasurable loss to the entire oil pipeline. Therefore, when designers understand the existence of corrosion factors, it is necessary to select some materials that are more resistant to corrosion and meet the design standards of oil pipelines when selecting the outer wall materials, which not only reduces the occurrence of undesirable problems in the use process. It can also effectively improve the life cycle of oil pipelines and valves, and reduce the cost of replacing materials [3].
(IV) Analysis of process performance In addition to the above-mentioned pressure, thermal conductivity and self-characteristics, which need to be paid attention to during the design process, in the process of manufacturing the internal control valve of the oil pipeline, the manufacturing process and sequence also affect the oil pipeline control valve. One of the important factors of quality, so when designing the valve, the designer must pay attention to the management and control of each process and consider the process performance factors, which are involved in the process of manufacturing the internal control valve of the oil pipeline. Process performance mainly includes casting properties, fluidity, shrinkage and segregation. Only by recognizing the basic requirements and regulations of these four aspects can the valve's own performance be effectively improved, and the oil pipeline can work normally.
III. Analysis of the force of the control valve of the oil pipeline The safety, professionalism and reliability of the valve are the basis and key to ensure the smooth operation of oil and gas transportation. Therefore, designers must fully consider the oil and gas transportation when designing. The influence of the pressure change in the process and the pressing force of the pipeline, so in order to study the comprehensiveness of the material of the valve and the thickness of the casing of the oil pipeline control valve, a reasonable scheme is designed to ensure the stable operation of oil and gas. Firstly, it is necessary to effectively control the oil and gas flow inside the pipeline and analyze the stress of the entire oil and gas valve. The most widely used is to calculate the force data inside the pipeline by using the third strength theory, and then obtain the pipeline. Force requirements and limits. Secondly, in the whole process, the cause of the failure of the oil pipeline cylinder is also explored. One of the reasons for the cylinder failure is that the oil pipeline control valve has elastic failure, resulting in elastic failure of the entire pipeline cylinder. The second reason is that the oil pipeline control valve will undergo a certain degree of deformation after a long period of use, which will cause the original use value of the cylinder to be better reflected. When this happens, it is best. The treatment is to replace the deformed material. The third cause is the blasting of the barrel wall, and the hardening of the toughness material of the valve is the main cause of this phenomenon, hindering the normal use of the entire cylinder [4].
Summary Through the analysis of the above problems, in order to improve the efficiency of oil and gas use, it is necessary to design the oil pipeline control valve reasonably. First of all, it is necessary to understand the importance of the oil pipeline control valve to improve the rationality of the design of the oil pipeline control valve. Secondly, it pays attention to the selection of the outer wall material of the oil pipeline control valve and the analysis of the force situation. Only comprehensive consideration of various problems exists. To effectively improve the safety of the oil pipeline control valve, we can better meet the basic requirements of the design and promote the smooth progress of the work.
references:
[1]LI Xiangdong, TAN Runhua, ZHANG Xuemin, FAN Yuqing. Research on rapid design process of valve products oriented to platform innovation[J]. Computer Integrated Manufacturing Systems, 2008, 14(1).
[2]DAI Ningsheng, LU Wenlong, ZHOU Guisheng.Promotion and Application of 3D CAD Technology[J].Machinery Manufacturing & Automation,2007,36(6).
[3]YANG Zhifeng, LEI Yuyong, XIONG Jia, YUAN Qiyuan. Design of industrial valve application based on VB[J]. Mechanical Design & Manufacturing, 2007(12).
[4]Bao Xiaobing. Hydraulic opening and closing system of ship lock gate valve[J].Hydraulic Pneumatics and Sealing, 2007,27(6).
Discussion on design and implementation of control valve for oil pipeline
[Abstract] The progress of today's society has promoted the improvement of people's living standards, and the way people travel has also changed. As the number of vehicles increases, people's demand for gasoline has also increased. However, gasoline is a non-renewable energy source. The large use of gasoline will lead to the exhaustion of gasoline resources. Therefore, relevant management personnel have begun to attach great importance to the problem of oil and gas storage and transportation. This paper discusses the design and implementation of oil pipeline control valves to ensure that oil and gas are more reasonable in transportation and reduce the occurrence of excessive oil and gas transportation or other problems.