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Device and method for detecting combustible gas leakage

A technology of gas leak detection and gas detection, applied in gas/liquid distribution and storage, pipeline system, mechanical equipment, etc.

Active Publication Date: 2012-06-27
溧阳常大技术转移中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] There are few practical technologies for on-line detection of gas leakage at home and abroad, and there is a lack of on-line detection and positioning technology equipment for gas pipeline leakage. This invention can fill the gap in this regard

Method used

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  • Device and method for detecting combustible gas leakage
  • Device and method for detecting combustible gas leakage

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Embodiment

[0019] The present invention includes a constant pressure vacuum pump 1, an automatic control proportional valve 2, a PLC controller 3, a negative pressure container 4, a vacuum pump 5, a first electromagnetic vacuum valve 6, a one-way valve 7, a temperature transmitter 8, and a pressure transmitter 9 , a second electromagnetic valve 10, a flow meter 11, a combustible gas detector 12, a gas detection tube 13 and a stop valve 14.

[0020] At one end of the negative pressure container 4, the vacuum pump 5 is connected to the negative pressure container 4 through the first electromagnetic vacuum valve 6 and the one-way valve 7 in sequence, and the pressure-stabilizing vacuum pump 1 is connected to the negative pressure container through the automatic control proportional valve 2 and the one-way valve 7 in sequence. 4 connection; at the other end of the negative pressure container 4, the gas detection tube 13 is connected with the negative pressure container 4 through the combustib...

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Abstract

The invention belongs to the field of oil and gas safety engineering and particularly relates to a device and a method for detecting the combustible gas leakage. The method belongs to a new method for realizing the fuel gas on-line detection and positioning in China, has the advantage of intermittent controllability and can also be used in process systems for gas taking detection and analysis on other gas. Through the arrangement of a first electromagnetic vacuum valve, a second electromagnetic vacuum valve, an automatic control proportion valve, a combustible gas detector and a gas pressure sensor, the goals of stable pressure in a continuous or intermittent control container and the combustible gas leakage detection are effectively realized. The device and the method have the advantages that the operation is convenient, the structure is simple, and the problems in two aspects including the on-line detection of the combustible gas and the stable pressure in a negative pressure container are mainly solved, and simultaneously, an automation control interface is also reserved for providing the possibility for the system full automation realization.

Description

technical field [0001] The invention belongs to the field of oil and gas safety engineering, and specifically refers to a device and method for combustible gas leakage detection. Other gas detection and analysis process system. Background technique [0002] Natural gas is flammable and explosive, and the explosion limit is only 5%~15%. It belongs to Class A chemical dangerous goods. If it leaks slightly, it is easy to mix with air to form an explosive gas mixture. Fire and explosion accidents may occur when encountering a fire source; therefore , as a technical means to ensure the safe operation of pipelines, the leakage detection and positioning technology of gas pipelines has attracted more and more attention; Cause pipeline leakage accidents, after the pipeline leaks, it will not only cause the waste of gas resources and environmental pollution, but also directly threaten the safety of people's lives and property; It is of great significance to analyze and develop leak ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D5/02
Inventor 王树立廉明明周诗岽冯建国
Owner 溧阳常大技术转移中心有限公司
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