Stable explosion-proof shell for fuel gas detecting instrument

An explosion-proof shell and detector technology, which is applied in the field of detectors, can solve the problems of affecting the use of the device, reducing the safety performance of the device, and reducing the sealing performance, so as to achieve the effect of ensuring the sealing

Active Publication Date: 2014-10-29
CHENGDU ZHIRONG ZHICHUANG INTPROP MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the current technology, to provide a stable explosion-proof housing for gas detectors, to solve the problem that the sealing performance of the threaded plug is not very good in the existing ceramic gas detectors, and the use of After a long time, the sealing performance will decrease, resulting in a decrease in the safety performance of the device and affecting the use of the device

Method used

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  • Stable explosion-proof shell for fuel gas detecting instrument
  • Stable explosion-proof shell for fuel gas detecting instrument
  • Stable explosion-proof shell for fuel gas detecting instrument

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Embodiment Construction

[0019] Below in conjunction with embodiment the present invention is described in further detail, but structure of the present invention is not limited to following embodiment:

[0020] 【Example】

[0021] like Figure 1-4 As shown, a stable explosion-proof housing for a gas detector includes a sealed housing 1, including a sealed housing 1, the sealed housing 1 is made of transparent ceramics, and the sealed housing 1 A ventilation port 101 is arranged on the top, and a valve 4 is arranged at the ventilation port 101. The valve 4 is also made of ceramics. The valve 4 is cylindrical. The valve 4 is driven to rotate by the motor 2 inside the sealed housing 1, and at least one air inlet groove 401 is arranged on the side wall of the valve 4, and the extending direction of the air inlet groove 401 is consistent with the axial direction of the valve 4, and the air inlet groove 401 extends from one end of the valve 4 away from the motor 2 to the other end, the length of the air in...

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Abstract

The invention discloses a stable explosion-proof shell for a fuel gas detecting instrument. The stable explosion-proof shell comprises a seal housing (1) which is made from transparent ceramics, the seal housing (1) is provided with a scavenging port (101) on which a valve (4) is arranged, and the inner wall of the seal housing (1) is provided with a protective cover (3); a spring (5) is arranged between the tail part of a motor (2) and the protective cover (3), and one end of the scavenging port (101) adjacent to the seal housing (1) is fixed with a rubber cushion (102). The stable explosion-proof shell provided by the invention has the beneficial effects that a rubber cushion is arranged on the outer part of the scavenging port (101), and air passes through a vent hole of the rubber cushion, the scavenging port (101), a vent groove and the protection cover and then enters the seal housing when ventilation is needed; furthermore, when the seal is demanded, the valve is adhered to the rubber cushion to seal the vent hole and the vent groove in a matching way, so as to ensure the leakproofness.

Description

technical field [0001] The invention belongs to the field of detectors, in particular to a stable explosion-proof casing for a gas detector. Background technique [0002] Gas detectors, combustible gas detectors, are detectors that respond to single or multiple combustible gas concentrations, and are generally divided into catalytic combustible gas detectors and semiconductor combustible gas detectors. [0003] The catalytic combustible gas detector uses the resistance change of the refractory metal platinum wire to measure the concentration of the combustible gas. When the combustible gas enters the detector, it will cause an oxidation reaction (flameless combustion) on the surface of the platinum wire, and the heat generated will make it The temperature of the platinum wire rises, and the resistivity of the platinum wire changes; the semiconductor combustible gas detector uses a gas-sensitive semiconductor element with high sensitivity. Corresponding relationship with com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D11/24
Inventor 吕忠贵
Owner CHENGDU ZHIRONG ZHICHUANG INTPROP MANAGEMENT CO LTD
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