Cylindrical heating rod test section filled with inert gas and air gap sealing method

A technology of inert gas and test section, which is applied in the sealing of the engine, the method of container discharge, the shape of the heating element, etc., to solve the difficulty of air gap sealing, solve the air gap pressure maintenance, and ensure the effect of air tightness

Active Publication Date: 2020-09-08
XI AN JIAOTONG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

Based on this requirement, the present invention provides a cylindrical heating rod test section filled with inert gas and an air gap sealing method, the purpose of which is to solve the problem of filling the gap of the cylindrical heating rod test section with inert gas and sealing the air gap

Method used

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  • Cylindrical heating rod test section filled with inert gas and air gap sealing method

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Embodiment Construction

[0016] The present invention is described in detail below in conjunction with accompanying drawing:

[0017] Such as figure 1 As shown, a cylindrical heating rod test section filled with inert gas includes a test section composed of an outer casing 7, an outer surface 8, a heating block 9 and an inner surface 10 arranged coaxially from the outside to the inside, The two ends of the test section are fixed in radial size and air gap sealed by the outer sealing ring 2 and the inner sealing ring 11, and are axially fixed by the flange 3 and the gland 1. The annular air gap between the outer surface 8 and the heating block 9 is the outer air gap 5 , and the annular air gap between the inner surface 10 and the heating block 9 is the inner air gap 6 .

[0018] Such as figure 1 As shown, the inner edges of the outer surface 8 and the two ends of the heating block 9 are provided with certain chamfers; the outer sealing ring 2 and the inner sealing ring 11 are ring gaskets specially m...

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Abstract

The invention discloses a cylindrical heating rod test section filled with inert gas and an air gap sealing method. The test section comprises a test section outer sleeve, an outer surface, a heatingblock and an inner surface which are coaxially arranged in sequence from outside to inside, radial size fixing and air gap sealing are conducted through an outer sealing ring and an inner sealing ringat the two ends of the pipe, and axial fixing is conducted through a specially-made flange and a gland. Inert gas filling is conducted on the inner and outer air gaps through the air inlet in one endof the test section outer sleeve, and after a period of time, the air gaps are filled with inert gas, and an air outlet valve is closed for pressure maintaining. The cylindrical heating rod test section filled with the inert gas can simulate the air gap state of the cylindrical heating rod, the adopted two pairs of cone seals can ensure the air tightness of the inner and outer air gaps of the test section, and the adopted unique air path solves problems of inert gas filling and air gap pressure maintaining of the cylindrical heating rod test section.

Description

technical field [0001] The invention belongs to the technical field of industrial heating, and relates to a cylindrical heating rod test section filled with inert gas and an air gap sealing method. [0002] technical background [0003] Cylindrical heating rods have higher safety and better economy, and are more and more used in the field of industrial heating. The structure of the cylindrical heating rod is more complicated than that of the traditional cylindrical heating rod. There will be a certain annular narrow gap between the inner and outer surfaces and the heating block to adjust the swelling of the heating block, and inert gas is filled in the gap for insulation. Although the existence of the air gap will increase the thermal resistance of heat conduction, due to its unique structure of double-sided heating, the cylindrical heating rod still has the advantage of lower temperature than the traditional cylindrical heating rod when the heating power is constant. In oth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20F17C7/00F16J15/10H05B3/42
CPCF16J15/062F16J15/102F16J15/104F17C7/00F17C2205/0302F17C2221/016G01N25/20H05B3/42
Inventor 章静姚灏秋穗正田文喜巫英伟苏光辉
Owner XI AN JIAOTONG UNIV
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