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Sealing device for pipe joint

A sealing device and pipe joint technology, applied in the direction of pipe/pipe joint/pipe fitting, measuring device, fluid tightness test, etc., can solve the problems of low reuse rate, poor economy, complicated operation, etc. Inexpensive, good sealing effect

Pending Publication Date: 2019-04-12
HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The conventional sealing technology means is to use welding technology to weld the sealing cover on the pipe nozzle, and then cut and remove the cover after the pressure test is qualified. High; 2. After cutting and removing the cap, it is necessary to perform procedures such as beveling on the nozzle, which is complicated to operate and high in cost; 3. Low reuse rate and poor economy

Method used

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  • Sealing device for pipe joint
  • Sealing device for pipe joint
  • Sealing device for pipe joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0083] Apply the pipe joint high-pressure sealing device of the present invention to the pressure test of the heat transfer tube of the nuclear power steam generator equipment, the specification of the heat transfer tube And the sealing (or air tightness) of the sealing device is tested,

[0084] The sealing device of the present invention is used to detect the sealing performance of the heat transfer tube of the nuclear power steam generator equipment, and it is found that there is no visible deformation and abnormal sound at the sealing part, and no air leakage is detected by applying soap liquid at the sealing boundary, and the pressure is not high during the pressure test and pressure holding process. Change, good sealing.

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PUM

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Abstract

The invention discloses a sealing device for a pipe joint. The sealing device comprises an elastic element (3) and a connection element capable of applying an axial force on the elastic element (3) and enabling the elastic element (3) to be radially deformed, wherein the connection element comprises a connection rod (2) and a fastener (6) connected with the connection rod (2). According to the sealing device, by applying the axial force on the elastic element, the elastic element is closely bonded with the inner wall of the pipe joint, so that sealing for the pipe joint is realized. The sealing device for the pipe joint is high in sealing performance; and moreover, the sealing device is simple in structure, few in machining procedures, convenient to operate, economic and reasonable, capable of being repeatedly utilized, and applied to the technical field of high-pressure sealing for various container pipe joints.

Description

technical field [0001] The invention relates to a sealing device, in particular to a pipe joint sealing device. Background technique [0002] Industrial containers, especially pressure vessels, often involve the sealing technology of non-flange pipe joints on these pressure vessels. When the heat exchange tube is subjected to a pressure test, the end of the tube needs to be pressure-sealed. [0003] The conventional sealing technology means is to use welding technology to weld the sealing cover on the pipe nozzle, and then cut and remove the cover after the pressure test is qualified. High; 2. After cutting and removing the cap, it is necessary to perform procedures such as beveling on the nozzle, which is complicated to operate and high in cost; 3. The reuse rate is low and the economy is poor. [0004] Therefore, there is an urgent need to develop a high-pressure sealing device for pipe joints that is simple in processing, easy to operate, easy to disassemble, reusable, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/11G01M3/02
CPCF16L55/1141G01M3/022
Inventor 张勇白海永张渲楠赵姗姗何春艳张和悦
Owner HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
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