Hard sealing clamping and pressing pipe fitting

A technology of hard sealing and pipe fittings, applied in the direction of pipes/pipe joints/fittings, through components, sleeves/sockets, etc., it can solve problems such as not very good, easy to drop and lose sealing effect, small size of seals, etc., to achieve Effect of improving connection strength and stability

Pending Publication Date: 2020-12-22
绍兴康林顿管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The working principle of the compression fitting is to insert the hard tube into the socket of the compression fitting, and use a special compression tool to lock the hard tube in the fitting. At the same time, there is a ring seal between the hard tube and the fitting, but the gap between the hard tube The connection is not firm, it is easy to fall off, the seal is small and easy to drop and lose, and the sealing effect is not very good

Method used

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  • Hard sealing clamping and pressing pipe fitting
  • Hard sealing clamping and pressing pipe fitting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] refer to figure 1 , this embodiment provides a hard-sealed clamping pipe fitting, including a pipe fitting 1, the pipe fitting 1 is a thin-walled metal pipe fitting, the pipe fitting 1 can be a two-way pipe fitting, a three-way pipe fitting or a multi-way pipe fitting, and each end of the pipe fitting 1 is socketed The supporting pipe 2 is connected, and the inside of the pipe fitting 1 is fixedly provided with a limit protrusion 6, which contacts with the end of the supporting pipe, and the length of the supporting pipe 2 inserted into the pipe fitting 1 is limited by the limit protrusion 6. The end of each pipe fitting 1 is a socket 5, the socket 5 is bell-shaped, the length of the socket 5 is 2mm-6mm, and the angle a between the socket 5 and the end surface of the socket 5 is 30°-60° °. A clamping area 3 and a rigid fit area 4 are provided between the pipe fitting 1 and the matching pipe material 2 .

[0022] The crimping area 3 is arranged on the side close to the...

Embodiment 2

[0026] refer to figure 2 , this embodiment provides a hard-sealed clamping pipe fitting. The difference between this embodiment and Embodiment 1 is that the rigid fitting area 4 includes a sealing ring convex groove 41 arranged on the pipe fitting 1, and the sealing ring convex groove 41 is provided with A sealing ring 42 matching with the convex groove 41 of the sealing ring. The convex groove 41 of the sealing ring is an O-ring convex groove, which increases the sealing effect and can be used for medium sealing such as compressed gas medium and high-pressure refrigerant.

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Abstract

The invention discloses a hard sealing clamping and pressing pipe fitting. The end part of the pipe fitting is in socket connection with a matched pipe, and a clamping and pressing area and a rigid matching area are arranged between the pipe fitting and the matched pipe; the end part of the pipe fitting is a bell mouth; and the pipe fitting and the matched pipe are in clearance fit in the rigid matching area, the clamping and pressing area comprises two clamping and pressing grooves formed in the pipe fitting, a pressing sealing area formed on the pipe fitting and grooves formed in the matchedpipe and matched with the clamping and pressing grooves, and the pipe fitting and the matched pipe are in interference fit in the clamping and pressing area. Permanent plastic deformation is achievedthrough the double clamping and pressing grooves in the pipe fitting and the grooves formed by the matched pipe in the area, a press-fit sealing area is formed between the double clamping and pressing grooves and the grooves, the pipe fitting and the matched pipe are pressed to form uniform plastic deformation, and metal hard sealing is achieved; and meanwhile, the rigid matching area and the bell mouth shaped like the horn mouth are used in cooperation, the influence of pipeline vibration and alternating bending on plastic deformation of the clamping and pressing area is reduced, and the connecting strength and stability of the pipe fitting and the matched pipe are improved.

Description

technical field [0001] The invention relates to the technical field of pipe fitting connection, in particular to a hard-seal pressing pipe fitting. Background technique [0002] In engineering applications, when there are two or more round pipes connected continuously to form a transmission pipeline, the adjacent round pipes need to be sealed and connected. The existing connection methods include compression type, convex type, compression type, Rolled thread, welded and tubular thread. [0003] The working principle of the compression fitting is to insert the hard tube into the socket of the compression fitting, and use a special compression tool to lock the hard tube in the fitting. At the same time, there is a ring seal between the hard tube and the fitting, but the gap between the hard tube The connection is not firm, it is easy to fall off, the seal is small and easy to drop and lose, and the sealing effect is not very good. Contents of the invention [0004] The pur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L21/03
CPCF16L21/03
Inventor 黄明辉
Owner 绍兴康林顿管业有限公司
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