Radiation resistant multi-point temperature measurement sensor

Abstract

The invention discloses a radiation resistant multi-point temperature measurement sensor, comprising: two parallel thermocouple wires; a plurality of bimetal temperature switches connected in parallelto the thermocouple wires, wherein the bimetal temperature switches are arranged at the positions of to-be-measured points, each bimetal temperature switch comprises a contact in a normally off state, the two ends of the contact are respectively connected with the two thermocouple wires, and when the temperature of the position of to-be-measured point where the bimetal temperature switch is located rises to an action temperature thereof, the contact is closed; and a temperature transmitter, wherein the temperature transmitter is connected with the two thermocouple wires. The invention relatesto the field of temperature measurement technology devices. According to the radiation resistant multi-point temperature measurement sensor disclosed by the invention, a plurality of temperature switches can be flexibly arranged according to requirements, when the multi-point temperature measurement at different positions is realized, the structure is simple, the signal number is simplified, andit is conducive to reducing the scale of the system; and furthermore, since the bimetal temperature switches have relatively good restorability, the radiation resistant multi-point temperature measurement sensor disclosed by the invention becomes a recoverable measurement system capable of outputting a temperature signal.

Description

technical field [0001] The invention relates to the field of temperature measuring technical devices, in particular to a radiation-resistant multi-point temperature measuring sensor suitable for marine nuclear power devices. Background technique [0002] In the marine nuclear power plant, in order to realize the measurement of the ambient temperature in the reactor containment and each compartment outside the containment, as well as the surface temperature of the tube bundle and cable bundle, it is necessary to be able to flexibly arrange multiple points, not be affected by vibration, and also have radiation resistance. Capability of multi-point temperature sensor. [0003] At present, in order to achieve multi-point temperature measurement, it is generally adopted to arrange multiple temperature sensors, or to arrange multiple platinum resistance thermometers. The large number and the large scale of the measurement system are not conducive to construction. [0004] In the...

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Problems solved by technology

[0007] It can be seen that there is no multi-point temperature sensor suitable for marine nuclear power plants in the prior art

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