Mounting structure of sensor for detecting closed gas

Abstract

The invention discloses a mounting structure of a sensor for detecting closed gas, which comprises a valve body and a valve core, wherein a sampling gas chamber is formed in the valve body, the valve core and the valve body are in movable hermetical connection, a sensor mounting hole is arranged on the outer end surface of the valve core, the sensor is mounted in the sensor mounting hole, a communicating hole which is communicated with the sensor mounting hole is arranged on the side surface of the valve core, and the valve core can move back and forth to lead the communicating hole and the sampling gas chamber to be separated or communicated. When the sensor needs to be replaced, the communicating hole and the sampling gas chamber are separated, and then gas in a closed body can not leak out along with the mounting hole of the sensor, thereby being very safe and being very convenient and fast to operate.

Description

technical field [0001] The invention belongs to a sensor installation structure, in particular to a sensor installation structure for detecting airtight gas. Background technique [0002] In current production, it is necessary to seal a certain gas in a certain space in many occasions in order to achieve a certain use effect of the gas. For example, in power equipment, it is often necessary to seal a certain amount of SF6 gas in the combined electrical appliance, and use the good insulation and arc extinguishing properties of SF6 gas to make the combined electrical appliance work more safely. However, in SF6 high-voltage electrical equipment, when the gas-phase water content in SF6 gas reaches a certain level, under the action of arc or corona, the decomposition products of SF6 gas will produce toxicity through hydrolysis reaction, which will cause chemical corrosion to the equipment, and then seriously affect the equipment. of normal operation. On the other hand, due to t...

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Problems solved by technology

[0003]In the current closed gas detection method, the sensor is generally fixed in the closed body, so when the sensor is damaged and needs to be replaced, it is often necessary to open the closed body, and then In the process of opening the closed body, not only the operation is troublesome, but also if the operation is improper, it is often easy to cause gas leakage, which will affect the normal operation of the equipment, especially if the leaked gas is toxic gas. It will also pollute the environment, and even affect the health of operators in severe cases

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