A kind of valve internal leakage detection simulation device and its gas valve internal leakage rate acoustic emission diagnosis method

Abstract

The invention relates to a valve inner leakage testing simulating device and a gas valve inner leakage rate acoustic emission diagnosis method thereof. The valve inner leakage testing simulating device comprises a buffer tank. One end of the buffer tank is connected with an air compressor, and the other end is connected with a flowmeter. The buffer tank is provided with a pressure gauge. A testing valve is arranged between the buffer tank and the flowmeter. The valve inner leakage testing simulating device and the gas valve inner leakage rate acoustic emission diagnosis method thereof can settle a problem of testing gas valve inner leakage and realize valve inner leakage testing and evaluation in a petrochemical industry; the valve inner leakage testing simulating device is used for performing valve inner leakage acoustic emission tests; acoustic emission parameters are acquired; a valve inner leakage rate evaluation formula model is established by means of a formula; and a database is applied for performing fitting, thereby realizing valve inner leakage rate diagnosis. The valve inner leakage testing simulating device and the gas valve inner leakage rate acoustic emission diagnosis method thereof have advantages of effectively performing online testing on valve inner leakage, preventing economic loss caused by work stoppage, ensuring stable pressure in tests and realizing estimation on the valve inner leakage rate.

Description

technical field [0001] The invention belongs to the technical field of acoustic emission detection, and in particular relates to a valve internal leakage detection simulation device suitable for valve internal leakage detection in petrochemical enterprises and an acoustic emission diagnosis method for gas valve internal leakage rate. Background technique [0002] At present, valves are commonly used auxiliary equipment in the petrochemical industry, and valve leakage failures are also very common failures, especially the internal leakage of valves is generally difficult to find, which may cause huge losses to the safe operation of the chemical industry, such as pollution of the working medium, causing fire and explosion Wait. According to the standard, the service life of the valve is 18 months. However, considering the use cost and other factors in the operation of my country's chemical industry, the valve will usually be used for overtime, and it will be overhauled once ev...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a valve internal leakage detection simulation device and its gas valve internal leakage rate acoustic emission diagnosis method to solve the detection problem of gas valve internal leakage and realize the detection and evaluation of petrochemical valve internal leakage

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