Temperature measuring device for heat-conducting medium in thin film production equipment

Abstract

The invention discloses a temperature measuring device for a heat-conducting medium in thin film production equipment, and is characterized in that an open end of a temperature measuring tube is connected to the wall of a pipeline of the heat-conducting medium in a sealed manner, the other end of the temperature measuring tube is a closed end and is dipped into the heat-conducting medium of the pipeline, a thermal resistance thermodetector is inserted into the temperature measuring tube, and a measuring head of the thermal resistance thermodetector is in tight contact with the inner wall of the bottom end of the temperature measuring tube. When the temperature measuring tube and the ambient heat-conducting medium reach a heat balance, a value measured by the thermodetector is a temperature value of the heat-conducting medium. Flanges arranged at two ends of a mounting tube are connected to the middle of the pipeline of the heat-conducting medium in a sealed manner, and the heat-conducting medium flows through the mounting tube. The wall of the mounting tube is connected to the open end of the temperature measuring tube in a sealed manner. A joint fixed on the mounting tube is connected to the thermal resistance thermodetector and is locked by a fixed nut. The output end of the thermodetector is connected to a computer control device, and the temperature of the heat-conducting medium is automatically adjusted. According to the invention, the measuring head of the thermal resistance thermodetector is in indirect contact with the heat-conducting medium, so that the measuring head is easy to mount and dismount, and sealing of the pipeline cannot be influenced; the thermal resistance thermodetector, the temperature measuring tube and the mounting tube are integrated so as to facilitate field installation and ensure sealing quality.

Description

technical field [0001] The invention relates to film production equipment, in particular to a temperature measuring device for a heat-conducting medium in the film production equipment. Background technique [0002] In the film production equipment, some parts need to be heated, and other parts need to be cooled. Generally, the pipelines of the heating system and the cooling system are filled with liquid heat transfer media such as oil or water to heat or cool the relevant parts. The general temperature measuring device is a thermal resistance thermometer. The measuring head of the thermal resistance thermometer is directly in contact with the heat transfer medium in the system pipeline. The thermal resistance converts the temperature change into a change in resistance value, and the resistance signal is transmitted to the computer control through the lead wire. device. [0003] The measuring head of the thermal resistance thermometer must be inserted into the pipeline of t...

AI Technical Summary

Problems solved by technology

On-site sealing installation is time-consuming and laborious, and the quality is difficult to guarantee a uniform standard

[0004] When the film production equipment is in use, the heat transfer medium flows through the pipes of the heating and cooling system. When the thermal resistance thermometer fails and needs to be disassembled, the heat transfer medium in the pipe will leak, which makes the maintenance of the film production equipment extremely inconvenient

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