Temperature measuring device with filtering device

Abstract

The invention discloses a temperature measuring device with a filtering device, which comprises a temperature sensor, a control circuit and a mechanical filtering device. The filtering device comprises a columnar energy storage part and flaky first fin parts. The first fin parts are arranged on at least one surface of the energy storage part, and the first fin parts are in thermal contact with andfixed to the energy storage part. The energy storage part is provided with a temperature measuring part which extends along the axis of the energy storage part and is shaped as a blind hole. The temperature sensor is assembled together with the temperature measuring part, and detects the temperature of the blind end of the temperature measuring part. Heat treatment is carried out on fluid to forma natural convection flow field. Through the flow of fluid, ultralow-frequency disturbance signals with the period up to a number of minutes are produced for temperature detection. The temperature measuring device of the invention can filter the ultralow-frequency disturbance signals through the mechanical filtering device and accurately detect the temperature of fluid. Therefore, there is no interference of disturbance signals during heat treatment, the amplitude of fluctuation of fluid temperature is very small, the temperature of fluid can be easily stabilized at a set value, the time is short, and energy can be saved.

Description

technical field [0001] The invention relates to a temperature measuring device, in particular to a temperature measuring device with a filter device applied to temperature signal detection, belonging to the field of temperature signal detection. Background technique [0002] The fluid is subjected to heat treatment such as heating and cooling, and the temperature distribution is uneven. Under the action of gravity, a natural convection flow field is generated. There are a large number of advection, turbulence, and turbulent flow areas inside the fluid, and the temperature distribution of the fluid is uneven. Fluid flow with uneven temperature distribution generates disturbance interference signals to temperature detection points, forming ultra-low frequency disturbance signals with a period of several minutes, and it is difficult for electronic filters to filter out, which makes it impossible for the temperature measuring devices in the prior art to measure accurately As for...

AI Technical Summary

Problems solved by technology

Fluid flow with uneven temperature distribution generates disturbance interference signals to temperature detection points, forming ultra-low frequency disturbance signals with a period of several minutes, and it is difficult for electronic filters to filter out, which makes it impossible for the temperature measuring devices in the prior art to measure accurately To the temperature of the fluid, during the heat treatment process, due to the interference of the disturbance signal, the temperature of the fluid is not easy to be stabilized at the set value, which takes a long time and increases energy consumption

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