Light interference type methane analyzer

An optical interference and measuring device technology, which is applied in the measurement of phase influence characteristics, wellbore/well components, and earth-moving drilling, etc., can solve the problems of inconvenient operation, inaccuracy, unfavorable detection, etc., and reduce the effect of gas diffusion. , Ensure accuracy, balance the effect of air pressure changes

Inactive Publication Date: 2009-01-28
陈书干
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, there were also downhole measuring instruments, most of which needed to take gas samples downhole and then bring them to the laboratory on the ground for analysis. This kind of speed is slow, inconvenient to operate, and even inaccurate, which is not conducive to downhole detection anytime and anywhere.

Method used

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  • Light interference type methane analyzer

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Embodiment Construction

[0010] As shown in Figure 1, the air chamber is fixed in the casing 1 of the present invention, and the air chamber is made up of two air chambers 2,4 and a gas sample chamber 3, and the three air chambers are placed parallel to each other, and the air chambers 2,4 They are respectively arranged on both sides of the gas sample chamber 3 , the gas sample chamber 3 is connected to the air inlet pipe 5 and the air outlet pipe 6 , and the end of the air outlet pipe 6 outside the housing 1 is fitted with a plug 7 . The filter chamber 8 is connected in series on the inlet pipe 5 of the gas sample chamber 3 , and the airbag 10 communicates with the filter chamber 8 through a disk-shaped inlet pipe 10 .

[0011] The two air chambers 2 and 4 can communicate with each other through pipelines, and form a relative seal with the outside world through a manual seal.

[0012] The two ends of the air chambers 2, 4 and the gas sample chamber 3 are respectively provided with plano lenses 11, 12...

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Abstract

The invention discloses an optical interference type methane recognizer, relates to gases, in particular to a detecting instrument of methane concentration, and comprises a gas chamber, a light source, a convergent lens, a plane mirror that has a reflecting film on the back, a deviation prism, a reflecting prism and a telescope group. Two light beams that are respectively formed under the action of the plane mirror run through different gases, converge before entering the reflecting prism, enter the telescope group together, and generate specific light interference phenomena on a field lens focal plane of the telescopes, which is visible to the naked eyes and is utilized to form black stripes in the center and colored stripes at two sides, thus quickly obtaining the deviation percent of the methane content between a gas sample chamber and an air chamber, quickly and accurately measuring the methane concentration in air in coal mines and other work locations, and providing security insurance for underground working. The optical interference typed methane recognizer has convenient measurement and is favorable for underground operations at any time.

Description

technical field [0001] The invention relates to a detection instrument for gas, especially methane gas concentration. Background technique [0002] It is well known that underground operations are extremely dangerous, and the potential safety hazard comes from the excessively high concentration of methane gas. When people feel the peculiar smell based on their own physiological functions, it is too late, and the harm caused can be imagined. In the past, there were also downhole measuring instruments, most of which needed to take gas samples downhole and then bring them to the laboratory on the ground for analysis. This kind of speed is slow, inconvenient to operate, and even inaccurate, which is not conducive to downhole detection anytime and anywhere. . Contents of the invention [0003] The purpose of the invention is to design an optical interference type methane detector which is convenient for measurement and convenient for downhole operation at any time. [0004] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/45E21B49/08
Inventor 陈书乾
Owner 陈书干
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