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A test device and test method for lift force of safety valve disc

A testing device and safety valve technology, which is applied to measuring devices, mechanical valve testing, mechanical component testing, etc., can solve problems such as difficulty in valve disc lift testing, and achieve real-time display, easy implementation, and accurate adjustment.

Active Publication Date: 2019-08-09
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problem of difficulty in testing the lift force of the traditional safety valve disc, and the precise adjustment of the valve disc opening can be realized through the micrometer feeding mechanism and the laser displacement sensor, and the minimum adjustment can be 0.01mm each time

Method used

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  • A test device and test method for lift force of safety valve disc
  • A test device and test method for lift force of safety valve disc
  • A test device and test method for lift force of safety valve disc

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Experimental program
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Effect test

Embodiment Construction

[0035] The present invention will be described in more detail below in conjunction with accompanying drawing:

[0036] The overall structure diagram of the safety valve disc lift test device is as follows: figure 1 As shown, the air compressor 14 and the air storage tank 13 are connected by a connecting pipe 1, and the air storage tank 13 is equipped with a pressure gauge 2, a pressure relief valve 3 and a drain valve 12, and the left end of the air storage tank 13 and the ball valve 11 is connected by threads , and wrapped with raw rubber cloth, the right end of the ball valve 11 is threadedly connected with the pipe A4, and wrapped with raw rubber cloth, the pipe A4 is mounted on the test bench 8 through the pipe support 10, and the pipe support 10 is fixed on the test bench 8 by T-shaped bolts, The right end of the pipeline A4 is connected to the air pressure sensor joint 9, and the air pressure sensor 5 and the air pressure sensor joint 9 are threaded. The left end of th...

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Abstract

The invention belongs to the technical field of valve testing, and provides a testing device and testing method for lift force of a valve disc of a safety valve. The testing device is mainly used formeasuring the lift force of the valve disc under different air pressure and different valve disc opening. The whole testing device comprises an air supply device, a connecting pipeline, the safety valve, a micrometer feeding mechanism, a displacement detection device, an air pressure detection device, a pressure detection device and a data acquisition system. The data acquisition system is connected with the displacement detection device, the air pressure detection device and the pressure detection device, and the acquisition, processing and storage of data can be realized. The micrometer feeding mechanism is arranged on the safety valve to be used for adjusting the opening of the valve disc. The displacement detection device is arranged on the safety valve to be used for feeding back theopening of the valve disc. The air pressure detection device is used for monitoring the air pressure in the pipeline in real time. The pressure detection device is used for measuring the lift force ofthe valve disc in real time. The testing device has a simple structure and high precision, and a guarantee for testing of the lift force of the valve disc of the safety valve is provided.

Description

technical field [0001] The invention belongs to the technical field of valve testing, and relates to a testing device and testing method for the lifting force of a valve disc of a safety valve. Background technique [0002] As the last barrier of overpressure protection in pressure systems, safety valves are widely used in boilers, pressure vessels and pressure pipelines. The safety valve is usually in a normally closed state, and will automatically open when the medium pressure in the equipment or pipeline exceeds the specified value, and prevent the pressure in the pipeline or equipment from exceeding the specified value by releasing pressure. The spring direct load safety valve uses spring force to realize the sealing and reseating of the valve, and is the most widely used in the industry. The flutter and frequency jump phenomenon during the opening and closing process of the safety valve may cause very serious consequences such as wear or even deformation of the sealing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/003
CPCG01M13/00
Inventor 宋学官王荣誉项晓敏宗超勇孙伟
Owner DALIAN UNIV OF TECH
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