Fast plugging protective high-response thermal galvanic couple

Abstract

The fast inserted protected high response thermocouple for use in measuring and controlling field includes armored thermocouple filament, thermocouple body, binding post, protecting sleeve, sealing glue and protecting hood. The armored thermocouple filament has electrons welded to the binding post and sealed with sealing glue onto the thermocouple body, and has its head protected with protecting hood. The protecting sleeve is sleeved onto the thermocouple body. The type-T armored thermocouple filament has diameter of 0.05 mm, laser welded head, heat joint of 0.12 mm and response time of 0.1 sec. The thermocouple has no leakage at pressure up to 1 MPa, may be assembled and disassembled, and can operate normally in case of existing stuffing. The thermocouple may be used in measuring the instantaneous varying temperature inside pressure container during inflation and deflation.

Description

technical field [0001] The invention relates to a thermocouple of a temperature sensor, in particular to a quick-plug type protective high-response thermocouple. For use in the field of measurement technology. Background technique [0002] Due to the response problem of the temperature sensor, it becomes very difficult to measure the internal transient temperature of the pressure vessel during the filling and deflation process. For the pressure vessel, the filling and deflation process is very fast, generally within 10-20 seconds So, in order to measure the internal temperature change of the pressure vessel during the filling and deflation process, the dynamic response of the temperature sensor should be at least within 0.1 seconds. The dynamic response of the existing domestically formed products is more than 1 second, and these products are measured by the oil bath method. If the measurement medium is replaced by air, since the heat transfer coefficient of air is much sma...

AI Technical Summary

Problems solved by technology

If it is necessary to measure the internal temperature of the container, it is necessary to drill a hole on the container and screw the thermocouple in, which makes installation and disassembly difficult. In addition, frequent disassembly will damage the thread, resulting in poor sealing. In addition, the thermal junction of the thermocouple wire Generally, salt bath welding is used for welding, and the process of salt bath welding is basically done by hand. The hot junction is more than 6 times the diameter of the metal wire, so the response is very slow.

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