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Gas-liquid linkage fast-closing valve system

A gas-liquid linkage and valve technology, which is applied in the pipeline system, gas/liquid distribution and storage, valve details, etc., can solve the problems of increasing components required for hydraulic drive devices, low reliability of hydraulic control circuits, and affecting production activities, etc. , to achieve the effects of compact structure, large valve closing force and improved reliability

Inactive Publication Date: 2014-05-21
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reliability of its hydraulic control circuit is not high, and the valve may be closed by mistake, which affects production activities
[0003] Generally, valves require four actions: valve opening, slow closing, fast closing, and 90% opening test. In order to meet these four actions, common hydraulic drive methods adopt the form of normal action hydraulic circuit and emergency action hydraulic circuit. It not only increases the number of components required for the hydraulic drive, but also reduces reliability

Method used

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] A gas-liquid linkage quick-closing valve system is installed on the steam pipeline of a power station and is used to control the conduction and blocking of the steam medium in the steam pipeline. First of all, some explanations will be made on the three working positions of the valve and several different working conditions. Such as figure 2 As shown, the three working positions of the valve include:

[0031] Fully open position: At this time, the steam medium in the pipeline is open and can pass through freely.

[0032] Fully closed position: At this time, the steam medium in the pipeline is completely blocked and cannot pass through freely.

[0033] 90% opening position: between the fully open position and the fully closed position, if the distance from the fully open position to the fully closed position is S, then the distance ...

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Abstract

The invention relates to a gas-liquid linkage fast-closing valve system. The gas-liquid linkage fast-closing valve system is installed on a steam pipeline of a power station, and used for controlling the passing and stopping of the steam medium in the steam pipeline. The gas-liquid linkage fast-closing valve system comprises a hydraulic driving device and a valve which are connected. The valve is connected with the steam pipeline. The hydraulic driving device comprises an oil supplying module, an oil discharging module and a gas-liquid linkage hydraulic cylinder. The gas-liquid linkage hydraulic cylinder is respectively connected with the oil supplying module, the oil discharging module and the valve. The oil supplying module is connected with the oil discharging module. The oil supplying module conveys hydraulic oil to the gas-liquid linkage hydraulic cylinder which drives the valve to be opened to open the steam pipeline. The hydraulic oil in the gas-liquid linkage hydraulic cylinder flows out through the oil discharging module to drive the valve to be closed. Compared with the prior art, the gas-linkage fast-closing valve system has the advantages of being large in valve-closing force, compact in structure, high in reliability and the like.

Description

technical field [0001] The invention relates to a valve device for a power station, in particular to a gas-liquid linkage quick-closing valve system. Background technique [0002] There are valves installed on the steam pipeline of the power station to control the conduction and blocking of the steam medium. In case of emergency, such as steam leakage or when the downstream pipeline of the valve needs to be repaired, the valve needs to be closed. In an emergency, the valve is also required to be able to close quickly. The hydraulically driven quick-closing valves on the market often use accumulators to store energy. When the valve needs to be closed quickly, the energy of the accumulator is released to achieve the purpose, because the volume of the accumulator is limited. , This method has a small closing force and limited output energy, and is generally used to drive small valves. The reliability of its hydraulic control circuit is not high, and the valve may be closed by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/12F15B1/02
CPCF17D1/06F17D3/01
Inventor 李晶廖攀朱先亮
Owner TONGJI UNIV
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