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Testing device and testing method for lift force of valve disc of main valve of steam release isolating valve

A testing device and isolation valve technology, applied in the direction of mechanical valve testing, etc., can solve the problems of flutter and runout sealing surface, medium leakage, wear and other problems, and achieve the effects of convenient collection, accurate adjustment and high collection accuracy

Active Publication Date: 2022-07-15
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steam release isolation valve may vibrate and jump during the opening and closing process, which may cause serious consequences such as wear or even deformation of the sealing surface and medium leakage.

Method used

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  • Testing device and testing method for lift force of valve disc of main valve of steam release isolating valve
  • Testing device and testing method for lift force of valve disc of main valve of steam release isolating valve
  • Testing device and testing method for lift force of valve disc of main valve of steam release isolating valve

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing, the present invention is described in more detail:

[0034] The overall structure diagram of a test device for the valve disc force of the main valve of the steam release isolation valve is as follows figure 1 As shown, including air supply device, transmission pipeline, steam release isolation valve main valve system, valve opening adjustment device, displacement monitoring device, air pressure monitoring device, lift monitoring device and data acquisition system.

[0035] The air supply device includes an air compressor 1, a connecting pipe A2, a ball valve A3, a three-way connecting pipe 17, a ball valve B4, a ball valve D18, a connecting pipe B5, an air storage tank 19, a pressure relief valve 6, a ball valve C7, and a pressure gauge. 20. The air compressor 1 is connected with the ball valve A3 through the connecting pipe A2 (the air compressor 1 is connected with the connecting pipe A2 through threads, and the connec...

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Abstract

The invention discloses a device and a method for testing lift force of a valve disc of a main valve of a steam release isolating valve, belongs to the technical field of valve testing, and is used for testing the lift force of the valve disc under different air pressures and different valve opening degrees. The whole testing device comprises an air supply device, a transmission pipeline, a steam release isolating valve main valve system, a valve opening adjusting device, a displacement monitoring device, an air pressure monitoring device, a lift force monitoring device and a data acquisition system. And the data acquisition system can realize acquisition, processing and storage of sensor signal data and real-time display of a data curve. The valve opening adjusting device is used for adjusting the opening of the valve, the displacement monitoring device can monitor the displacement of the valve rod, and adjustment of the opening of the valve can be more accurate through data feedback. The air pressure detection device can detect the air pressure in the pipeline and the valve inlet and outlet in real time, and the lift monitoring device is used for measuring the lift of the valve disc in real time. The device is simple in structure and high in precision, and provides a guarantee for testing the lift force of the valve disc of the main valve of the steam release isolating valve.

Description

technical field [0001] The invention belongs to the technical field of valve testing, and relates to a testing device and a testing method for the lift force of a main valve disc of an isolation valve due to the release of steam. Background technique [0002] The steam release isolation valve is a kind of safety valve. It is often installed on the pipeline of the steam system and is an extremely important valve. The steam release isolation valve is mainly used in the nuclear power industry, usually in order to prevent the overpressure of the secondary circuit main steam system, and is one of the important key equipment of the nuclear power plant. The steam release isolation valve is usually composed of an electromagnetic pilot valve and a main valve, and the steam release isolation valve utilizes the spring force of the spring in the main valve to achieve valve sealing and return. The steam release isolation valve may vibrate and jump during the opening and closing process,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/003
CPCG01M13/003
Inventor 宋学官刘富文宗超勇李清野周威豪
Owner DALIAN UNIV OF TECH
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