Pipeline connecting pipe fitting

A technology for connecting pipe fittings and connecting pipes, which is applied in the direction of pipe/pipe joint/pipe fitting, sealing surface connection, passing element, etc., can solve the problems of anti-vibration, low anti-loosening performance, poor reliability of sealing performance, low connection sealing pressure, etc. Achieve the effect of reliable connection loosening ability, high disassembly torque, and high connection sealing performance

Inactive Publication Date: 2014-05-07
孙海潮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems existing in the above-mentioned flared connection method, without changing the outer conical structure of the existing connecting joint, and the specially provided pipeline connection pipe fittings completely solve the problems of the above-men

Method used

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Examples

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Example Embodiment

[0039] Examples: figure 1 It is a schematic diagram of the connection structure of the present invention. The connecting pipe of the present invention includes a nut 3 and a ferrule 8. When connecting, the nut 3 and ferrule 8 are sleeved on the connecting pipe 9 in sequence, and the taper angle of the ferrule 18 faces the taper angle 11 of the inner taper hole of the nut, and the connecting pipe 9 Expand the connecting pipe bell mouth 7 at the end of the pipe, pull the connecting pipe 9 gently, pull the ferrule 8 through the connecting pipe bell mouth 7 into the inner taper hole 10 of the nut, rotate the nut 3 left and right several times until the hand feels unable to pull, making the connection The pipe horn 7 and the inner cone horn groove 15 of the ferrule, the wall 19 of the ferrule sleeve hole and the outer wall of the connecting pipe 9, the outer tapered surface 17 of the ferrule and the inner taper hole 10 of the nut fit each other as smoothly as possible, and then Con...

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Abstract

A pipeline connecting pipe fitting comprises a nut, a joint, a joint external cone table and a connection pipe horn port and is characterized in that an inner cone hole is formed in the nut, a clamp sleeve for match usage is arranged in the inner cone hole of the nut, the clamp sleeve is provided with a hollow clamp sleeve hole, a clamp sleeve inner cone hole is formed in the bottom of the clamp sleeve hole and consists of a clamp sleeve inner cylinder hole and a clamp sleeve inner cone hole horn groove, the clamp sleeve inner cylinder hole is provided with a seal cone surface, a clamp sleeve hole wall and a clamp sleeve outer cone inclined surface form a clamp sleeve cone inclined angle, the joint outer cone table extrudes the seal cone surface to achieve cone surface sealing, the joint outer cone table extrudes the connection pipe horn port in the clamp sleeve inner cone hole horn groove to achieve horn groove sealing, and the nut inner cone hole extrudes the clamp sleeve to extrude a connection pipe to achieve clamp sleeve sealing. The pipeline connecting pipe fitting has the advantages that seal connection is convenient, seal process requirements are low, seal properties are high, the pipeline connecting pipe fitting can be applied to connection of low-hardness thin-wall metal pipes made of dissimilar materials and can be completely interchanged with connection nuts in the prior art.

Description

technical field [0001] The invention belongs to the industrial field, and relates to a connecting pipe fitting for connecting pipes into pipelines, in particular to a connecting pipe fitting for fluid transmission pipelines. Background technique [0002] The connections between pipes and pipes, pipes and other pipeline connection fittings include welding connection, thread connection, flange connection, bell mouth connection, ferrule type pipe joint connection and other methods. Among them, flared connection, also known as flared connection and flanging connection, has the advantages of connection process requirements, low connection cost, convenient connection method, and can be used for low-hardness thin-walled metal pipelines, but there is a low sealing pressure. The disadvantage of poor sealing reliability can usually only be applied to pipeline connections with a sealing pressure lower than 8MPa. Flared fittings consist of a nut, a fitting with an outer cone, and some...

Claims

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Application Information

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IPC IPC(8): F16L19/07
CPCF16L19/065F16L19/07
Inventor 孙海潮
Owner 孙海潮
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