Hydrogen sulfide concentration detection method and device in gas pipeline

A gas pipeline and concentration detection technology, which is applied in measurement devices, pipeline systems, gas/liquid distribution and storage, etc., can solve the problems of easy decomposition of sodium sulfate, limit of toxicity by mercury volume method, and easy volatilization of iodine solution. Reliable principle, reduced risk, less metal consumption

Inactive Publication Date: 2015-08-05
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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Problems solved by technology

[0004] Currently available hydrogen sulfide gas detection methods and devices have some shortcomings, such as: the iodine solution in the iodometric method is easy to volatilize, and sodium sulfate is easy to decompose, which is easy to cause errors; the mercury measurement method is limited by the toxicity of mercury; the methylene blue colorimetric method And the lead acetate reaction method has a relatively narrow determination range, etc.

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  • Hydrogen sulfide concentration detection method and device in gas pipeline

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Embodiment Construction

[0013] First, based on a new detection principle of hydrogen sulfide concentration: CuSO 4 +H 2 S=CuS↓+H 2 SO 4 According to this method, the result of detecting the hydrogen sulfide concentration in the leaked natural gas is safe and reliable, and the generated CuS precipitate is insoluble in water and sulfuric acid, and can exist stably in the reaction solution.

[0014] The patent of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments: first, unscrew the bolt (1) on the device, install the device on the natural gas pipeline to be detected, and adjust the bolt (1) according to the size of the pipe diameter , and then use the remote control device (7) to remotely manipulate the detection device to move on the pipeline to detect the airtightness of the pipeline. Once the natural gas pipeline (3) leaks, the methane gas leaked from the pipeline will enter through the methane semi-permeable membrane (10)....

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Abstract

The invention discloses a hydrogen sulfide concentration detection method and a hydrogen sulfide concentration detection device in a gas pipeline, and belongs to the technical field of a natural gas storage and transportation engineering. Hydrogen sulfide is nervous toxin and has a strong stimulation function on mucosa, therefore detecting the concentration of hydrogen sulfide leaked by the gas pipeline becomes an important link for protecting the personal safety of a serviceman. The invention discloses a hydrogen sulfide concentration detection method and a new hydrogen sulfide concentration detection device in a new gas pipeline. The device comprises a bolt, a spherical bearing, a natural gas pipeline, a filling material with an adsorption function, a hydrogen sulfide semipermeable membrane, a soft sulfuric acid corrosion preventing material, a gasket, a wireless remote control device, a local device profile map, a device shell, a methane semipermeable membrane, a copper sulphate solution, copper sulphate precipitate and a pressure sensor. The device can provide certain reference to the pipeline servicemen.

Description

technical field [0001] The invention belongs to the technical field of natural gas storage and transportation engineering, and in particular relates to a method and a device for detecting the concentration of hydrogen sulfide leaked in a gas transmission pipeline. Background technique [0002] Natural gas is a clean and efficient energy source, and pipeline transportation is one of the most economical modes of natural gas transportation. At present, the total length of natural gas pipelines built in my country has exceeded 80,000 kilometers, and 50% of them have been in service for more than 20 years, that is, the design life specified by the national standard; The damage caused by external forces and other effects has made the safety situation of the pipeline worse and worse, hidden safety hazards are constantly emerging, and a large number of pipelines are already in the stage of frequent accidents. [0003] According to the national development strategy, natural gas as a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D5/02G01N5/00
CPCY02E60/34
Inventor 冯明如刘宝玉马诗会商丽艳张宇彤佟伟伟
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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