Anti-seismic and leak-proof structural temperature sensor

Abstract

The invention creatively provides an anti-seismic and leak-proof structural temperature sensor, comprising an armored fixing bushing, a lower nut and an upper nut in sequence from the head of the temperature sensor, wherein a temperature sensing element is arranged inside the armored fixing bushing and comprises a temperature sensing probe and a probe connecting wire; the lower nut is connected with the armored fixing bushing which reciprocates in the lower nut in a piston manner; the upper nut is connected with the lower nut; the tail of the upper nut is of a hollow structure; an elastic connector is installed in the armored fixing bushing; a sealing ring for the embedding of the armored fixing bushing is arranged at the tail of the lower nut; a first sealing adhesive is sealed between the lower nut and the upper nut; and a second sealing adhesive is sealed at the tail of the upper nut. By creatively adopting a two-step anti-seismic and leak-proof method with a movable cylinder piston principle and a three-stage sealing structure (the sealing ring, the first sealing adhesive and the second sealing adhesive, the anti-seismic and leak-proof function required in an equipment temperature measuring process can be realized.

Description

technical field [0001] The invention belongs to the field of measuring instruments for process control, and in particular relates to a temperature sensor with an anti-shock and leak-proof structure. Background technique [0002] In my country's large-scale power plant generating set equipment, there are many bearings, bearing bushes, and side walls that require long-term, high-precision temperature measurement, and the vibration of this equipment is very large and requires the internal full lubricating oil not to leak. The temperature sensors used in power plants in the past usually adopt the anti-seismic ferrule bolt structure or the fixed thread seal structure. The temperature sensor with the anti-seismic ferrule bolt structure leaks due to the failure of the anti-seismic ferrule seal after a period of operation. The temperature sensor of the thread seal structure is easy to cause damage to the sensor due to the vibration of the equipment, so these two structures have brou...

AI Technical Summary

Problems solved by technology

The temperature sensors used in power plants in the past usually adopt the anti-seismic ferrule bolt structure or the fixed thread seal structure. The temperature sensor with the anti-seismic ferrule bolt structure leaks due to the failure of the anti-seismic ferrule seal after a period of operation. The temperature sensor of the threaded sealing structure is easy to cause damage to the sensor due to equipment vibration, so both structures bring unstable factors to the normal operation of the unit equipment, and the use effect is not ideal

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