Simulation system for inner leak detection of hydrocarbon valve

A technology for simulating system and internal leakage, which is applied in the direction of detecting the appearance of fluid at the leakage point, measuring the rate of increase and deceleration of fluid, and using liquid/vacuum degree for liquid tightness measurement, etc., which can solve the interference and single medium of the detection system and other issues to achieve the effect of reducing economic losses and solving potential safety hazards

Active Publication Date: 2013-02-13
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0003] This invention has the following disadvantages: Acoustic emission is feasible as a method for detecting valve leakage, but acoustic emission is easily disturbed by surrounding noise and cannot obtain accurate leakage signals, and this method of on-site installation in enterprises is easily disturbed by surrounding noise; This detection system has a single medium; there is no judgment of leakage

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  • Simulation system for inner leak detection of hydrocarbon valve

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Embodiment Construction

[0023] The main principle of the device is to simulate the internal leakage of the valve under working conditions by controlling the opening of the valve to be tested. Record and store the pressure difference at both ends of the valve to be tested, the size of the acoustic emission signal and the real number of the back-end flowmeter, and complete a set of database and a discrimination software. This set of software and database can be used as the basis for discrimination in the field detection in the future.

[0024] The structure of the device is: a medium storage tank 1 connected in sequence and its own secondary pressure reducing valve 2, a stop valve 3, a filter 6, a second valve 9, a valve to be tested 8, a third valve 10, a viewing window 13, Flow meter set 14 and collection tank 17.

[0025] The stop valve 3 is used to control the opening or closing of the whole system.

[0026] The main pipeline between the shut-off valve 3 and the filter 6 is connected with a nitrog...

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Abstract

The invention relates to a detection system for simulating inner leak of a valve and a method thereof. The state of inner leak of a valve is simulated by controlling different openings of the valve, signals are transmitted through a differential pressure transmitter, a flow sensor and an acoustic emission probe, and corresponding data of each group is acquired by the data acquisition software at the rear end. Moreover, a set of judgment software is formed based on a great quantity of data, which can judge whether inner leak of the valve happens and judge the magnitude of leak by calling the corresponding information in a database when in field offline detection. The simulation system provided by the invention comprises medium storage tanks 1 in sequential connection and a two-level pressure reducing valve 2, a stop valve 3, a filter 6, a second valve 9, a to-be-detected valve 8, a third valve 10, a visual window 13, a flow meter group 14 and a collection tank 17.

Description

technical field [0001] The invention relates to the field of valve leakage detection. Background technique [0002] Through patent retrieval, it is found that "a detection system for gas valve leakage" of Shanghai Institute of Industrial Automation Instrumentation is similar to some detection methods of this device. This invention is mainly based on a system for remote online judgment of valve leakage by installing pressure transmitters, temperature transmitters and acoustic emission probes in the pipelines before and after the gas valve. [0003] This invention has the following disadvantages: Acoustic emission is feasible as a method for detecting valve leakage, but acoustic emission is easily disturbed by surrounding noise and cannot obtain accurate leakage signals, and this method of on-site installation in enterprises is easily disturbed by surrounding noise; This detection system has a single medium; there is no judgment of leakage. Contents of the invention [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/28G01M3/24
Inventor 孙健邹兵高少华王振姜鸣
Owner CHINA PETROLEUM & CHEM CORP
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