Thermocouple insulation locator, mounting method thereof and wall temperature measuring device

Abstract

The invention discloses a thermocouple insulation locator, a mounting method of the locator and a wall temperature measuring device. The thermocouple insulation locator comprises a self-tightness locating bolt fixed to a thermal coupler, a locating nut connected to the self-tightness locating bolt, a first insulation casing pipe, a second insulation casing pipe, a locating guide pipe and a pushing and pressing nut, wherein the first insulation casing pipe and the second insulation casing pipe are arranged on the two sides of the self-tightness locating bolt and are arranged on the thermal coupler in a sleeved mode, the first insulation casing pipe is sleeved with the locating guide pipe, and the pushing and pressing nut is arranged on the second insulation casing pipe in a sleeved mode and is in threaded connection with the rear end of the locating guide pipe. An end cover is arranged at the rear end of the pushing and pressing nut, and insulation blocking pieces are arranged between the self-tightness locating bolt and the two insulation casing pipes, a pushing and pressing spring is arranged between the insulation blocking piece at the rear end of the self-tightness locating bolt and the end cover arranged at the rear end of the self-tightness locating bolt in a sleeved mode, and the second insulation casing pipe is sleeved with the pushing and pressing spring. According to the thermocouple insulation locator, the thermal coupler can be precisely located to the measuring point, it is ensured that the thermal coupler is insulated from other components except a measured device, and small vibration and migration of the measured device in the channel direction of the thermal coupler can be borne.

Description

technical field [0001] The invention relates to the technical field of heat pipe measurement, in particular to a thermocouple insulating positioner, an installation method thereof, and a wall temperature measuring device provided with the thermocouple insulating positioner. Background technique [0002] In a large number of industrial applications and scientific research experiments, it is necessary to measure and record the temperature in real time. Thermocouples have been widely used for their advantages of high precision, sensitive response and wide measurement range. Commonly used thermocouple measuring points are generally fixed by welding or mechanically. Welded mounts do not facilitate repositioning and re-use of thermocouples. And the conventional electric spark impact spot welding thermocouple will cause great damage to the surface condition and temperature field of the measured object, especially when the measured workpiece is small in size. For the device with ...

AI Technical Summary

Problems solved by technology

However, during use, the connection point between the thermocouple rear-end wire and the thermocouple front-end protection tube will bear the tension of the spring for a long time, which will easily cause the wire to be disconnected at the thermocouple rear-end connection point.

Especially when there is vibration in the device under test, the stretching length of the spring changes periodically, and the thermocouple wire and the front-end protection tube are prone to fatigue fractures, which greatly shortens the service life of the thermocouple.

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