Detecting device and method for online automatic measurement of gas micro-leakage of MSR pilot valve

A leak detection device and automatic measurement technology, which is applied in the direction of measuring device, by measuring the increase and deceleration rate of fluid, and using liquid/vacuum degree to measure liquid tightness, etc., to achieve high reliability, high measurement accuracy, and easy repeatability The effect of development

Pending Publication Date: 2019-03-29
RES INST OF NUCLEAR POWER OPERATION +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Generally, small flow loss can be measured by gas mass flowmeter, but due to the small leakage of the MSR pilot valve, the leakage is required to be less than 5.9ml / min. At present, the smallest monitoring range of small gas mass flowmeters that can be calibrated by the Metrology Bureau is 20ml / min, cannot meet request

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  • Detecting device and method for online automatic measurement of gas micro-leakage of MSR pilot valve
  • Detecting device and method for online automatic measurement of gas micro-leakage of MSR pilot valve

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] Such as figure 1 and figure 2 As shown, this implementation case is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operation processes are given, but the protection scope of the present invention is not limited to the following implementation cases.

[0022] This implementation case provides an online automatic measurement of MSR pilot valve gas micro-leakage detection device, including high-pressure nitrogen cylinder 1, pressure regulator valve 2, standard container 3, valve group 4, differential pressure transmitter 5, automatic overpressure protection Device 6, temperature sensor 7, pressure sensor 8, isolation valve 9, regulating valve 10, gas collection device 11, liquid discharge recovery device 12, precision electronic scale 13, leakage section 14 and automa...

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Abstract

The invention belongs to the technical field of equipment gas leakage detection, and particularly relates to a detecting method for an online automatic measurement of a gas micro-leakage of an MSR pilot valve. The invention aims to provide a detecting method for the online automatic measurement of the gas micro-leakage of the MSR pilot valve, and perform sealing performance measurement on the premise that the MSR pilot valve is not disassembled. According to the detecting device and method for the online automatic measurement of the gas micro-leakage of the MSR pilot valve, the gas micro-leakage rate of the MSR pilot valve is accurately measured by calibrating the measured pressure drop, so that the measuring precision is high, the reliability is high, the operation cost is low, and the repetition is easy to be performed many times, and the gas leakage of the MSR pilot valve can be automatically measured.

Description

technical field [0001] The invention belongs to the technical field of equipment gas leakage detection, and in particular relates to an online automatic measurement device and method for gas micro-leakage detection of an MSR pilot valve. Background technique [0002] The safety valve is an automatic valve, which can automatically open when the medium pressure in the protected equipment exceeds the preset safety pressure value, discharge a certain amount of fluid, and then when the medium pressure in the equipment drops to or slightly lower than the safety pressure value , and automatically shut down, thus playing a role in protecting the equipment. The safety valve plays the role of the last protection on the equipment, and its importance is self-evident. According to the requirements of the regulations, the safety valve needs to be regularly tested for sealing performance to quantitatively evaluate whether the sealing performance of the safety valve meets the requirements....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/28
CPCG01M3/2876
Inventor 王颖朱汉武刘赛楠舒芝锋黄萍官金塔王巍张瑞卞光宇王禹臻焦添王伟
Owner RES INST OF NUCLEAR POWER OPERATION
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