A Durable High Precision Thermocouple

Abstract

The invention proposes a durable high-precision thermocouple, including a junction box, a first protection tube, a second protection tube, a third protection tube, a fourth protection tube, a fifth protection tube, a fixing flange, a first electrode and For the second electrode, by arranging the second protection tube and the third protection tube in the first protection cavity and the second protection cavity of the first protection tube, and setting the fifth protection tube in the fourth protection tube, double-tube protection is adopted, When the thermocouple works in the fluid, the first protection tube and the fourth protection tube will be worn and corroded first, which effectively prolongs the service life of the second protection tube, the third protection tube and the fifth protection tube, and can effectively buffer the impact of the fluid on the first protection tube. The impact force of a protection tube, the gap between the two first tube bodies of the fourth protection tube forms a channel, when it works in the fluid, the fluid slowly flows through the gap between the two first tube bodies , to avoid the vertical contact between the fluid and the first pipe body and the second pipe body, and to avoid corrosion or fracture caused by long-term impact force.

Description

technical field [0001] The invention relates to the technical field of thermocouples, in particular to a durable high-precision thermocouple. Background technique [0002] The protective tube in the traditional thermocouple will wear and corrode after long-term use, and because the fluid flow is fixed and unidirectional, the protective tube is always worn and corroded severely, causing corrosion, perforation, and corrosion of the metal protective tube. Even breakage, resulting in shortened service life of the protection tube, urgently needs to be improved. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes a durable high-precision thermocouple. [0004] A durable high-precision thermocouple proposed by the present invention includes a junction box, a first protection tube, a second protection tube, a third protection tube, a fourth protection tube, a fifth protection tube, a fixing flang...

AI Technical Summary

Problems solved by technology

[0002] The protective tube in the traditional thermocouple will wear and corrode after long-term use, and because the fluid flow is fixed and unidirectional, the protective tube is always worn and corroded severely, causing corrosion, perforation, and corrosion of the metal protective tube. Even broken, resulting in a shortened service life of the protective tube, which needs to be improved urgently

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