Protective sleeve for thermoelectric couple of converter

Abstract

The invention discloses a protective sleeve for a thermoelectric couple of a converter. The protective sleeve is prepared from the following raw materials in parts by weight: 55 to 65 parts of a mainmaterial, 1 to 3 parts of a cross-linking agent, 0.2 to 0.4 part of a calcium-zinc stabilizer, 1 to 2.5 parts of a toughening agent, 10 to 20 parts of a purple clay compound, 5 to 12 parts of calcinedkaolin, 2 to 6 parts of glass fiber, 2 to 7 parts of talcum powder, 4 to 10 parts of expanded perlite, 2 to 8 parts of heavy calcium carbonate, 1 to 2 parts of polycaprolactam, 1 to 2 parts of polyethylene glycol 1200 and 1 to 2 parts of a coloring agent. The protective sleeve disclosed by the invention has the advantages of excellent mechanical properties, relatively low cost, stable quality andhigh surface glossiness; the impact, caused by flue gas particles, on a measurement end of the thermoelectric couple can be effectively prevented, and the service life is prolonged; meanwhile, the protective sleeve has extremely good thermal stability, more rapid measurement response and more accurate temperature measurement.

Description

technical field [0001] The invention relates to the technical field of thermocouples, in particular to a protective sleeve for thermocouples of a reformer. Background technique [0002] In the coal chemical industry, a variety of combustion furnaces are needed, and the reformer is one of them. The flue gas generated in the reformer is mainly a reducing gas, including carbon monoxide, hydrogen sulfide, and chlorine. When the internal temperature is detected, the temperature of the flue gas particles is too high, the protective tube of the thermocouple is easily damaged, and the flue gas particles hit the surface of the thermocouple protective sleeve, which requires extremely high mechanical properties of the protective sleeve, shortening the temperature measurement thermocouple. The service life of the thermocouple is long, and the temperature measurement reaction is slow during temperature measurement. How to prepare a thermocouple protective sleeve with good thermal stabili...

AI Technical Summary

Problems solved by technology

[0002] In the coal chemical industry, a variety of combustion furnaces are needed, and the reformer is one of them. The flue gas generated in the reformer is mainly a reducing gas, including carbon monoxide, hydrogen sulfide, and chlorine. When the internal temperature is detected, the temperature of the flue gas particles is too high, the protective tube of the thermocouple is easily damaged, and the flue gas particles hit the surface of the thermocouple protective sleeve, which requires extremely high mechanical properties of the protective sleeve, shortening the temperature measurement thermocouple. The service life of the thermocouple is long, and the temperature measurement reaction is slow during temperature measurement. How to prepare a thermocouple protective sleeve with good thermal stability and excellent mechanical properties has become a technical problem that needs to be solved at present.