Multipoint scalable thermoelectric couple

Abstract

The invention belongs to a multipoint scalable thermoelectric couple, comprising an electrical connector, a protection sleeve and a thermometric element; the upper end of the protection sleeve is fixedly arranged on the electrical connector, the thermometric element is fixedly arranged on the electrical connector and placed inside the protection sleeve; wherein the protection sleeve is composed of an adjusting pipe and a measuring pipe on the same axis; the upper end of the adjusting pipe is fixedly arranged on the electrical connector and the outer wall thereof is provided with screw threads; a swivel bearing is coaxially arranged at the outer wall and the upper end of the measuring pipe; an adjusting screw nut is coaxially fixed at the outer wall of the swivel bearing, the adjusting screw nut and the adjusting pipe are meshed and connected with each other by screw threads. In the invention, the position of the thermometric element in the protection sleeve can be randomly adjusted and replacement of measuring cores is convenient, measuring accuracy and safety are higher, vibration resistance is better, therefore the thermoelectric couple of the invention is a multipoint scalable thermoelectric couple which features long service life.

Description

technical field [0001] The invention belongs to thermocouples in the field of temperature sensors, in particular to a multi-point scalable thermocouple. Background technique [0002] The most widely used temperature measurement and detection element in process detection today is thermocouple, especially in the reactor and preheater in the chemical industry, it is often necessary to monitor the temperature of multiple positions inside the reactor during its process detection , It is uneconomical to set up multiple thermocouples, so multi-point thermocouples are widely used. At present, the multi-point thermocouple sold on the market is mainly composed of three parts: explosion-proof junction box, protective sleeve and temperature measuring element. The components are fixed at the lower end of the explosion-proof junction box in the protective sleeve. Although multi-point measurement can be realized, the following problems still exist: 1. The position of the measuring end of ...

AI Technical Summary

Problems solved by technology

The multi-point thermocouple currently on the market is mainly composed of three parts: an explosion-proof junction box, a protective sleeve and a temperature measuring element. The components are fixed at the lower end of the explosion-proof junction box in the protective sleeve. Although multi-point measurement can be realized, the following problems still exist: 1. The position of the measuring end of the temperature measuring element of the multi-point thermocouple cannot be adjusted, and it is difficult to ensure the best position for measurement. , resulting in inaccurate data; 2. Damaged multi-point thermocouples can only be replaced as a whole, and the reaction in the reactor needs to be stopped, which reduces work efficiency and causes high maintenance costs; 3. Multi-point thermocouples There is still a certain gap between the temperature measuring element and the protective sleeve after being installed in place, resulting in low measurement accuracy; 4. The temperature measuring element in the multi-point thermocouple has poor vibration resistance and high damage rate

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