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Tubular furnace air-path structure of carbon sulfur analyzer

A technology of carbon and sulfur analyzer and tube furnace, which is applied in the preparation of test samples, etc., can solve the problem of residual gas in the gas chamber, and achieve the effect of convenient and quick connection and disassembly

Inactive Publication Date: 2014-08-06
NANJING QILIN SCI INSTR GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a gas circuit structure of a tube furnace for a carbon-sulfur analyzer, which solves the problem that the gas produced in the last few times of use will remain in the gas chamber after multiple uses

Method used

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  • Tubular furnace air-path structure of carbon sulfur analyzer

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0015] Such as figure 1 As shown, a tube furnace gas circuit structure of a carbon and sulfur analyzer includes an oxygen source 1, a gas chamber 11, a pneumatic constant value device 2, a flow meter 10, a dryer 9, a dust removal device 8, a tube furnace 7, an oxygen Control valve 3, intake control valve 5, outlet control valve 4, cleaning control valve 6 and exhaust port 12.

[0016] The oxygen source 1 communicates with the input end of the oxygen control valve 3, the output end of the oxygen control valve 3 communicates with the input end of the pneumatic constant value device 2, the output end of the pneumatic constant value device 2, the input end of the intake control valve 5 and the clea...

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Abstract

The invention discloses a tubular furnace air-path structure of a carbon sulfur analyzer. The tubular furnace air-path structure comprises an oxygen source, an air chamber, a pneumatic valuator, a flowmeter, a drying device, a dust removal device, a tubular furnace, an oxygen control valve, an air inlet control valve, an air outlet control valve, a washing control valve and an exhaust port. The tubular furnace air-path structure is provided with the washing control valve, before the tubular furnace air-path structure is used every time, the washing control valve is opened first, then the air inlet control valve is closed, the oxygen control valve is opened to introduce oxygen into the air chamber, the residual air generated in the air chamber during the previous application of the air-path structure is washed, and when the tubular furnace air-path structure is in use, the washing control valve is closed, so that the analysis precision is guaranteed by washing the air chamber before the application.

Description

technical field [0001] The invention relates to a gas path structure of a tube furnace, in particular to a gas path structure of a tube furnace for a carbon and sulfur analyzer. Background technique [0002] Carbon-sulfur analyzer refers to the general term for instruments that quantitatively analyze the carbon and sulfur elements in samples (generally steel materials). Existing carbon and sulfur analyzers use the gas volumetric method to analyze carbon, and the iodometric method to analyze sulfur. Carbon and sulfur analyzers generally use tube furnaces or electric arc furnaces to burn samples. Arc drift and high voltage instability make it difficult to guarantee the accuracy and stability of the analysis. Therefore, carbon and sulfur analyzers with tube furnaces are generally used now. When in use, the samples are put into the tube furnace to burn to generate gas, and then filtered and dried, then enter the analysis box through the gas chamber for analysis. [0003] After...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
Inventor 李泉杨志强岳所祥杭文辉
Owner NANJING QILIN SCI INSTR GRP CO LTD
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