Manufacturing process of multi-protection temperature sensor

Abstract

The invention belongs to the technical field of temperature sensors, and particularly relates to a manufacturing process of a multi-protection temperature sensor. The temperature sensor comprises a temperature sensing probe, an explosion-proof member, a junction box and a box cover. The manufacturing process comprises the following steps: S1, designing the explosion-proof member, and preparing the temperature sensing probe, the explosion-proof member, the junction box and the box cover; S2, pre-arranging the explosion-proof member in the junction box, and forming an outer explosion-proof cavity between the explosion-proof member and the inner wall of the junction box; S3, filling the bottom end of the inner cavity of the outer explosion-proof cavity with a glue, so that the joint of the explosion-proof member and the junction box is sealed; and S4, clamping the top end connecting surface flange of the explosion-proof member between a junction box connecting surface flange and a box cover connecting surface flange. According to the invention, by designing the junction box structure with the explosion-proof member, the temperature of flames and jetted objects passing through the double explosion-proof joint surfaces is sharply reduced, so that the ignition temperature cannot be reached, the explosion-proof effect is better, a pressure relief function is achieved, multiple protection is effectively provided, the structure is simple, and the manufacturing cost is low.

Description

technical field [0001] The invention relates to the technical field of temperature sensors, in particular to a manufacturing process of a multi-protection temperature sensor. Background technique [0002] In order to meet the needs of use in high temperature and other environments, the junction box components with sufficient strength are designed using the principle of gap flameproof. The main structure of the existing explosion-proof flameproof temperature sensor is as follows: figure 1 As shown, it includes a temperature-sensing probe 1, a junction box 2, a box cover 3 and an electrician seat 4. The electrician seat 4 is arranged in the junction box 2. The temperature-sensing element in the temperature-sensing probe 1 is connected to the electrician seat 4 through a cable. The box cover 3 is joined to the top flange of junction box 2 and fastened by bolts. The principle of explosion-proof is: when the explosion in the shell spreads to the outside of the shell, the flame-p...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a manufacturing process of a multiple protection temperature sensor, which solves the problem that the single explosion-proof surface of the existing explosion-proof temperature sensor cannot rapidly reduce the temperature of the flame and jet, and still a small part reaches The flame and spray at the ignition temperature are sprayed out of the junction box, the flameproof performance needs to be improved, and the lack of high pressure relief function cannot provide multiple protection for the sensor

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