Thermotechnical high-precision temperature measurement relay

Abstract

A thermotechnical high-precision temperature measurement relay of the present invention belongs to the temperature control and overheating electronic component protection technology field, and comprises a relay body and a temperature measuring device, wherein the temperature measuring device is arranged at the side part of the relay body and comprises a fixing casing, a push rod motor, a fixing pipe, a first spring, a first fixing rod, a second fixing rod, a pressure sensor, a second spring, a draught fan, a first temperature sensor, a humidity sensor, a one-way valve, a second temperature sensor, a control device and an alarm. Compared with the prior art, according to the present invention, the second temperature sensor is separated from the relay body, and the push rod motor can push the second temperature sensor regularly to be contacted with the relay body to measure under the control of the control device, thereby avoiding the situation that the second temperature sensor suffers a high temperature for a long time, so that the precision of the second temperature sensor decreases.

Description

technical field [0001] The invention belongs to the technical field of temperature control and overheating electronic element protection, and in particular relates to a high-precision temperature measuring relay for thermal work. Background technique [0002] A heat engine is any kind of machine that uses internal energy to do work. A heat engine is a type of machine power machinery that converts the chemical energy of fuel into internal energy and then into mechanical energy, such as steam engines, steam turbines, gas turbines, internal combustion engines, jet engines, etc. The relay is an electrical control device, which is an electrical appliance that causes the controlled quantity to undergo a predetermined step change in the electrical output circuit when the change of the input quantity meets the specified requirements. It has an interactive relationship between the control system and the controlled system. Usually used in automatic control circuits, it is actually a...

AI Technical Summary

Problems solved by technology

In the electronic testing application technology, the relay itself in the working state often generates heat higher than the ambient temperature due to the load, and it is difficult to detect the working temperature of the relay itself under this condition. Therefore, in the prior art, Most of them use the temperature sensor directly fixed on the thermal relay, but the accuracy of the temperature sensor will be reduced if the temperature sensor is exposed to high temperature for a long time, which will affect the follow-up work

[0003] Therefore, a new technical solution is urgently needed in the existing technology to solve the problem that the temperature sensor is affected by high temperature for a long time and the accuracy is reduced.

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