Portable oxygen index testing device and application method

A testing device and oxygen index technology, which is applied in the direction of chemical analysis by combustion, etc., to achieve the effects of easy manufacturing, carrying and transportation, convenient operation and low cost.

Inactive Publication Date: 2014-01-22
山东省产品质量监督检验研究院
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  • Abstract
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  • Application Information

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Problems solved by technology

The level of oxygen index is an important indicator for judging the fire and flame retardancy of materials. Oxygen index testers can measure the oxygen index of various materials such as plastics, rubber, textile fabrics, wood, foam materials and other polymer materials. However, the current technology , the oxygen index of the material is generally tested in the laboratory, and there is no portable device and method for testing the oxygen index on the spot.

Method used

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  • Portable oxygen index testing device and application method
  • Portable oxygen index testing device and application method
  • Portable oxygen index testing device and application method

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Embodiment Construction

[0023] Accompanying drawing is a kind of specific embodiment of the present invention. This embodiment includes a cabinet 1, the cabinet 1 is connected to an oxygen-nitrogen mixed gas cylinder 3 through a gas hose 2, a gas flow meter 4 is connected between the gas hose 2 and the oxygen-nitrogen mixed gas cylinder 3, and a combustion tube is arranged on the cabinet 1 5. A glass cover 6 is installed on the top of the combustion tube 5, a sample fixing needle 7 is arranged inside the combustion tube 5, and a copper tube heating zone 8 and a copper tube coil cooling zone 9 installed inside the chassis 1 are respectively set on both sides of the combustion tube 5 . A temperature control meter 10 is arranged on the side of the case 1, and the temperature control meter 10 is connected to a power switch 11, and the power switch 11 is respectively connected to a heating power adjustment button 12 and a power socket 13 arranged on the side of the case 1, and a bottom cover 14 is provide...

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Abstract

The invention relates to the technical field of testing of an oxygen index needed in combustion of a material, especially to a portable oxygen index testing device and an application method. The portable oxygen index testing device comprises a case which is connected with an oxygen-nitrogen mixed gas cylinder through a gas flexible pipe; and according to the application method, oxygen-nitrogen mixed gas in the oxygen-nitrogen mixed gas cylinder is delivered to an incendiary cylinder of the case through the gas flexible pipe, then the sample is ignited, the value of a gas flowmeter is recorded, then the value of the gas flowmeter is recorded again when the sample is burned to a marked line, and thus, the value of the oxygen index of the sample can be calculated. The invention has the following beneficial effects: the portable oxygen index testing device has the advantages of convenience in manufacturing, carrying and transporting, convenient operation, low cost and applicability to on-site testing of the oxygen index of a fireproof thermal-insulation material and changes the situation that detection of the oxygen index of a material can only be completed in a laboratory in the prior art.

Description

(1) Technical field [0001] The invention relates to the technical field of testing the oxygen index required for material combustion, in particular to a portable oxygen index testing device and a usage method. (2) Background technology [0002] The oxygen index refers to the minimum oxygen concentration required for a material to burn flamingly in an oxygen-nitrogen mixed flow under specified conditions. The level of oxygen index is an important indicator for judging the fire and flame retardancy of materials. Oxygen index testers can measure the oxygen index of various materials such as plastics, rubber, textile fabrics, wood, foam materials and other polymer materials. However, the current technology , The oxygen index of materials is generally tested in the laboratory, and there is no portable device and method for testing the oxygen index on the spot. (3) Contents of the invention [0003] In order to make up for the deficiencies of the prior art, the pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/12
Inventor 邓小波王忠袁来李义民姚红艳吴莉莉杨光辉
Owner 山东省产品质量监督检验研究院
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