High-performance leakage-proof flexible joint

A flexible interface, high-performance technology, applied in the direction of adjustable connection, pipe/pipe joint/pipe fitting, through components, etc., can solve the problems of interface leakage, high interface processing cost, complex interface structure, etc.

Pending Publication Date: 2018-01-19
程宇婷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the flexible interface with double rubber rings solves the problem that the single rubber ring cannot test the pressure of the joint alone, it has the disadvantages of complex structure of the joint and high cost of joint processing
At the same time, although the flexible interface pipes currently used can adapt to a certain range of pipeline swing angles and axial displacements, when the sealing rubber ring ages and the sealing compression ratio is reduced, or when the pipeline foundation has a large uneven settlement, large gap, or when there is a large axial displacement of the pipe under the action of thermal expansion and contraction, interface leakage will occur

Method used

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  • High-performance leakage-proof flexible joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] Set the double-convex ring sealing rubber ring 3 whose inner diameter is smaller than the outer diameter of the groove on the groove 3 of the plug 1, and apply the lubricant on the conical inclined surface 5 of the socket head 2 and the sealing inner hole 8, The plug 1 is pulled into the socket 2 by external force, and the resistance generated by the sliding friction between the outer circle of the double-convex ring sealing rubber ring 3 and the conical slope 5 of the socket and the sealing inner hole 8 is smaller than that of the double-convex The thrust generated by the dry friction between the inner hole of the ring sealing rubber ring 4 and the outer circle of the groove 3 of the plug 1, and the cross section of the double convex ring sealing rubber ring 4 is prolate, so that it cannot roll and move, so that the two The convex ring sealing rubber ring 4 can be inserted into the socket 2 together with the plug 1, and the compressed convex colloid on both sides is wed...

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PUM

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Abstract

The invention discloses a high-performance leakage-proof flexible joint. The internal-pressure, external-pressure and negative-pressure inspections can be singly performed on connected joints after connection. The joint leakage is caused by such factors as aging of rubber rings, nonuniform settlement of a foundation or bearing of radial loads in the pipe work; and sealing rubber rings are axiallyshifted into an inclined surface with a lift angle under the pressure effect of conveying mediums to increase radial pressure, so that the contact pressure of sealing contact surfaces is higher than the pressure of the mediums to automatically stop continuous leakage of the joints.

Description

technical field [0001] The patent of the present invention relates to a pipe, especially the interface of large, medium and extra large conveying medium pipes. Background technique [0002] The pipes that convey the medium can work normally only by reliable connections, and the flexible interface connection of the apron is the most commonly used connection method. [0003] Currently known flexible joints for pipes include single rubber rings and double rubber rings. Although the flexible interface with double aprons solves the problem that the single apron cannot test the pressure of the interface alone, it has the disadvantages of complex interface structure and high interface processing cost. At the same time, although the flexible interface pipes currently used can adapt to a certain range of pipeline swing angles and axial displacements, when the sealing rubber ring ages and the sealing compression ratio is reduced, or when the pipeline foundation has a large uneven set...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L27/10
Inventor 程金煦
Owner 程宇婷
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