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Protective sleeve for thermoelectric couple of converter

A technology for thermocouples and protective sleeves, which is applied in the field of protective sleeves for thermocouples in reforming furnaces, can solve the problems of extremely high mechanical performance requirements for protective sleeves, shortened service life of thermocouples for temperature measurement, and easy damage to protective tubes of thermocouples, etc., to achieve Low cost, extended service life, good thermal stability

Inactive Publication Date: 2018-01-30
ANHUI LAND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The present invention proposes a protective cover for a reformer thermocouple, and its raw materials include by weight: 55 parts of main materials, 3 parts of crosslinking agent, 0.2 parts of calcium-zinc stabilizer, 2.5 parts of toughening agent, and 10 parts of purple sand compound , calcined kaolin 5-12, glass fiber 2 parts, talc powder 7 parts, expanded perlite 4 parts, heavy calcium carbonate 8 parts, polycaprolactam 1 part, polyethylene glycol 1200 2 parts, coloring agent 1 part.

Embodiment 2

[0016] The present invention proposes a protective cover for thermocouples in a reformer, and its raw materials include by weight: 65 parts of main materials, 1 part of crosslinking agent, 0.4 parts of calcium-zinc stabilizer, 1 part of toughening agent, and 20 parts of purple sand compound , 5 parts of calcined kaolin, 6 parts of glass fiber, 2 parts of talc, 10 parts of expanded perlite, 2 parts of ground calcium carbonate, 2 parts of polycaprolactam, 1 part of polyethylene glycol 1200, and 2 parts of coloring agent.

[0017] The purple sand compound is prepared by the following process: mix and stir purple sand, medical stone, tourmaline, and water evenly, vacuum calcinate, pulverize, add hydroxypropyl methylcellulose, heat up water and stir evenly, add starch octenyl succinate , konjac gum was stirred, filtered, dried, and pulverized to obtain the purple sand compound.

Embodiment 3

[0019] The present invention proposes a protective cover for a reformer thermocouple, and its raw materials include by weight: 58 parts of main materials, 2.5 parts of crosslinking agent, 0.25 parts of calcium-zinc stabilizer, 2 parts of toughening agent, and 12 parts of purple sand compound , 10 parts of calcined kaolin, 3 parts of glass fiber, 5 parts of talc, 6 parts of expanded perlite, 6 parts of heavy calcium carbonate, 1.2 parts of polycaprolactam, 1.7 parts of polyethylene glycol 1200, and 1.2 parts of coloring agent.

[0020] The main ingredients include by weight: 30 parts of thermoplastic polyester elastomer, 16 parts of metallocene polypropylene, and 4 parts of urea-formaldehyde resin. The toughening agent includes by weight: 1 part of toluene diphenyl phosphate, 0.4 part of chlorinated paraffin, and 0.8 part of dibutyltin dilaurate.

[0021] The purple sand composite is prepared by the following process: mix and stir purple sand, medical stone, tourmaline, and wat...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L23/12C08L61/24C08L77/02C08L91/06C08L3/06C08L5/00C08K13/06C08K7/14C08K3/34C08K7/26C08K3/26C08K5/523C08K5/57
Inventor 李正祥杨永亮杨正荣宗翠梅
Owner ANHUI LAND GRP
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