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Gas path leakage detection device for PDH device gas chromatograph

A leak detection device and gas chromatograph technology, applied in the direction of measuring device, fluid tightness test, machine/structural component test, etc., can solve problems such as leakage, insufficient detection sensitivity, difficult operation, etc., and improve detection efficiency , Simplify the detection operation and improve the detection accuracy

Pending Publication Date: 2020-08-04
TIANJIN BOHAI PETROCHEM CO LTD
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Problems solved by technology

[0006] One of the purposes of the present invention is to propose a gas path leakage detection device for a gas chromatograph of a PDH device, which solves the difficulty in detecting gas path leakage of a gas chromatograph in the prior art, and the detection sensitivity is not enough, and it is not easy to detect Technical issues with some small leaks

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  • Gas path leakage detection device for PDH device gas chromatograph
  • Gas path leakage detection device for PDH device gas chromatograph
  • Gas path leakage detection device for PDH device gas chromatograph

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Embodiment Construction

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0030] refer to Figure 1 to Figure 4 , a preferred embodiment of the present invention is used for the gas path leakage detection device of the gas chromatograph of the PDH device, which includes an upstream end, a downstream end, a pressure stabilizing valve 4, a micro-pressure gauge 5 and a flow meter 7, and the upstream end is connected to the gas source 1 connection, the pressure stabilizing valve 4 is arranged near the upstream end, and the downstream end...

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Abstract

The invention, which relates to the technical field of gas path leakage detection, provides a gas path leakage detection device for a PDH device gas chromatograph, thereby mainly solving technical problems that in the prior art, the gas chromatograph gas path leakage detection operation difficulty is large, the detection sensitivity is not enough, and some trace leakage is not easy to detect. Thegas path leakage detection device for the PDH device gas chromatograph comprises an upstream end, a downstream end, a pressure stabilizing valve, a micro-pressure gauge and a flow meter; the upstreamend is connected with a gas source, the pressure stabilizing valve is arranged close to the upstream end, the downstream end is connected with a chromatograph to be detected, the micro-pressure gaugeand the flow meter are both located on a downstream pipeline of the pressure stabilizing valve, and the flow meter is arranged on the downstream of the micro-pressure gauge. The pressure stabilizing valve, the micro-pressure gauge and the flow meter are integrated together according to a specific sequence, so that an instrument to be detected is effectively protected, and the detection precision and the detection efficiency are improved; and the detection operation can be simplified, and the gas path leakage detection operation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of gas path leakage detection, in particular to a gas path leakage detection device for a gas chromatograph of a PDH device. Background technique [0002] In the propane dehydrogenation to propylene process, as the on-line analysis instrument of the PDH unit, ABB's PGC5000 series gas chromatograph on-line analyzer has the advantages of high sensitivity, friendly man-machine dialogue, and easy operation. However, it is necessary to overhaul the gas chromatograph during use, especially the maintenance of the gas circuit, because gas circuit leakage is the most dangerous. If hydrogen leaks outside, it is very easy to form an explosive mixed gas with air, causing an explosion and a safety accident. [0003] During the maintenance process, if the carrier pressure measurement value of the instrument is lower than the set value, the gas chromatograph has a gas path leakage. Specifically, if the pressure cannot be ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/26G01M3/28
CPCG01M3/26G01M3/2807G01M3/2815
Inventor 郭洪伟
Owner TIANJIN BOHAI PETROCHEM CO LTD
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