Testing device and testing method for lift force of valve disc of safety valve

A testing device and safety valve technology, which can be used in measuring devices, testing of mechanical components, testing of machine/structural components, etc., can solve problems such as difficulty in testing valve disc lift, and achieve real-time display, high acquisition accuracy, and increased sealing. sexual effect

Active Publication Date: 2018-12-25
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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  • Testing device and testing method for lift force of valve disc of safety valve
  • Testing device and testing method for lift force of valve disc of safety valve
  • Testing device and testing method for lift force of valve disc of safety valve

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Embodiment Construction

[0035] Below in conjunction with accompanying drawing, the present invention is described in more detail:

[0036] The overall structure of the safety valve disc lift test device is shown in the figure. figure 1 As shown, the air compressor 14 and the air storage tank 13 are connected by the connecting pipe 1, the pressure gauge 2, the pressure relief valve 3 and the drain valve 12 are installed on the air storage tank 13, and the air storage tank 13 and the left end of the ball valve 11 are connected by screws , and wrapped with raw tape, the right end of the ball valve 11 is connected with the pipeline A4 through threads, and wrapped with raw tape, the pipeline A4 is supported on the experimental bench 8 by the pipeline bracket 10, and the pipeline bracket 10 is fixed on the experimental bench 8 through T-bolts, The right end of the pipeline A4 is connected with the air pressure sensor connector 9, the air pressure sensor 5 and the air pressure sensor connector 9 are connec...

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PUM

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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 a testing method for the lift force of a valve disc of a safety valve. Background technique [0002] As the last barrier for 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. When the medium pressure in the equipment or pipeline exceeds the specified value, it will automatically open to prevent the pressure in the pipeline or equipment from exceeding the specified value by releasing the pressure. The spring direct load safety valve utilizes the spring force to realize the sealing and return of the valve, and is the most widely used in the industry. The flutter and frequency jump phenomenon that occurs during the opening and closing process of the safety valve may cause serious consequences such as wear and even deformation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
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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