Design method of double electric low-pressure reversing valve for electro-hydraulic control valve group of deep-sea oil tree

Abstract

The invention provides a double-power low-pressure reversing valve designing method for electrohydraulic control valve groups of deep-sea Christmas trees. The designing method particularly comprises the four steps of confirming a designing scheme according to the actual operating environment, calculating and checking geometry size, calculating and checking valve body operating stress, rechecking and the like. The designing method provided by the invention has the advantages that the designing method is reasonable and high in calculation efficiency and accuracy; the design values are closer to actual use values; the design work reliability of double-power low-pressure reversing valves of the electrohydraulic control valve groups of the deep-sea Christmas trees is effectively increased; and therefore, the stability and the reliability of the valve body in actual use are increased.

Description

technical field [0001] The invention relates to a design method of a double-electric low-pressure reversing valve, in particular to a design method of a double-electric low-pressure reversing valve of an electro-hydraulic control valve group of a deep-sea oil tree. Background technique [0002] At present, in the development of deep-sea oil and gas resources, deep-sea submerged Christmas tree equipment is widely used and plays a vital role in the development of deep-sea oil and gas resources. The dual-electric low-pressure directional valve is often designed and prepared by modifying the traditional freshwater underwater double-electric low-pressure directional valve or shallow sea underwater double-electric low-pressure directional valve through empirical formulas, although it can meet the needs of deep-sea environments to a certain extent. However, there is a large error between the operating technical parameters of the double-electric low-pressure directional valve for de...

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Problems solved by technology

[0002] At present, in the development of deep-sea oil and gas resources, deep-sea submerged Christmas tree equipment is widely used and plays a vital role in the development of deep-sea oil and gas resources. The dual-electric low-pressure directional valve is often designed and prepared by modifying the traditional freshwater underwater double-electric low-pressure directional valve or shallow sea underwater double-electric low-pressure directional valve through empirical formulas, although it can meet the needs of deep-sea environments to a certain extent. However, there is a large error between the operating technical parameters of the double-electric low-pressure directional valve for deep-sea oil tree and the actual use environment, which leads to the failure of the double-electric low-pressure directional valve in the deep-sea environment. In addition, the traditional experience in the design process of double-electric low-pressure reversing valves, on the one hand, the calculation accuracy is seriously insufficient, on the other hand, the calculation efficiency is relatively low, and at the same time, it is impossible to calculate the design structure. Effective verification and verification will cause great trouble to the design work. Therefore, in view of this situation, it is urgent to develop a universal and simple dual-electric low-pressure reversing valve design method to meet the actual use. needs

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