Quick reversing system

A reversing system and fast technology, applied in the fluid pressure actuation system components, valve details, multi-port valves, etc., can solve the problems of poor switching time repeatability, long switching time of the reversing valve, easy gas leakage, etc. Good performance, ensure safety, and reduce the effect of switching time

Active Publication Date: 2015-02-11
PETROCHINA CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of long switching time, poor switching time repeatability and easy gas leakage and inte

Method used

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  • Quick reversing system

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[0021] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 As shown, an embodiment of the present invention provides a rapid reversing system. The rapid reversing system includes: a reversing valve 1, a matching process pipeline 3, and an execution structure 2. The reversing valve 1 adopts a double-off and double-discharge straight-through ball valve, and the executive structure 2 adopts a hydraulic executive structure. The valve stem of the reversing valve 1 is pushed through the independent hydraulic executive structure so that the reversing valve 1 Repeat the switch.

[0023] The embodiment of the present invention adopts a hydraulic actuator structure, that is, the actuator structure 2 adopts a hydraulic drive form, which avoids the compressibility of air, so that the time ...

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Abstract

The invention discloses a quick reversing system comprising reversing valves, a supporting pipeline and executive structures. The quick reversing system is characterized in that the reversing valves are double-shutoff double-discharge straightway ball valves, the executive structures are hydraulic executive structures; the hydraulic executive structures which are independent push valve stems of the reversing valves so that the reversing valves open and close again and again. The quick reversing system has the advantages that by the use of the hydraulic executive structures, air compressibility is avoided, and the time when the hydraulic executive structures push the reversing valves is more accurate and uniform; quick opening and closing of the reversing valves is achieved, the opening-closing time of single valve is up to 30ms+/-3ms, opening-closing time of the reversing valves is greatly shortened, and repeatability is good; the double-shutoff double-discharge straightway ball valves are used as the reversing valves, upstream and downstream double-sealing double-shutoff effect of the reversing valves can be achieved, and the requirements of the reversing valves for long-term zero leakage can be met; the system is solid and durable, costs are reduced, and the safety in reversing gas in the system is also guaranteed.

Description

technical field [0001] The invention relates to the field of gas flow standard devices, in particular to a quick reversing system of a natural gas flow standard device. Background technique [0002] The fast reversing system is the key equipment in the gas flow standard device of the mass-time method, and its main function is to make the gas medium flow in the gas flow standard device according to the need. The fast reversing system is generally composed of reversing valves, supporting process pipelines and execution structures. The switching speed and switching time repeatability of the reversing valves and the rationality of the entire system structure directly affect the technical level of the gas flow standard device. Therefore, it has an important influence on the overall level of gas flow value transmission. [0003] At present, the reversing valves in the fast reversing systems that have been put into use at home and abroad generally use floating ball valves or plug ...

Claims

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Application Information

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IPC IPC(8): F16K11/00F16K31/12F16K31/54
CPCF15B1/02F15B21/08F16K19/00F16K31/12F16K31/16F16K31/54
Inventor 任佳李东军段继芹周方勤王强黄和杨文川陈荟宇韦颜樊兰蓓
Owner PETROCHINA CO LTD
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