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A pipeline connection pipe fitting

A technology for connecting pipe fittings and connecting pipes, which is applied in the direction of pipes/pipe joints/pipe fittings, sealing surface connection, passing components, etc., which can solve the problems of low anti-vibration and anti-loosening, no anti-corrosion, poor reliability of sealing performance, etc.

Inactive Publication Date: 2015-12-09
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 of the above-mentioned flared connection. On the basis of the flared connection, without changing the existing connection joint structure, the specially provided pipeline connection pipe fittings completely solve the above-mentioned problems. Problems in the flared bell connection method: the connection sealing pressure is low, the sealing performance is poor, it cannot prevent corrosion, the anti-vibration and anti-loosening performance is low, and it cannot be directly used for pipeline connections between dissimilar metals

Method used

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  • A pipeline connection pipe fitting
  • A pipeline connection pipe fitting
  • A pipeline connection pipe fitting

Examples

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Embodiment

[0037] Example: figure 1 It is a schematic diagram of the connection structure of the present invention. figure 1 1 is the joint, figure 1 Middle 3 is the connecting nut of the present invention. The connecting pipe fitting of the present invention includes a connecting nut 3 and a nut taper sleeve 9. Firstly, the connecting nut 3 and the taper sleeve 9 are sequentially set on the connecting pipe 10, and the tapered sleeve taper angle 21 faces the inner taper hole of the nut. 6. Expand the bell mouth 7 at the end of the connecting pipe, lightly pull the connecting pipe 10, pull the tapered sleeve 9 into the inner taper hole 6 of the nut through the bell mouth 7, and rotate the connecting nut 3 left and right several times until the hand feels that it cannot be pulled, so that The bell mouth 7 of the connecting pipe and the inner tapered hole 18 of the tapered sleeve, the wall of the hole of the tapered sleeve 20 and the pipe wall of the connecting pipe 10, the outer tapered s...

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PUM

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Abstract

Disclosed is a connecting pipe fitting for a pipeline, comprising a nut (3), a connector outer frustum (5) and a connecting pipe bell mouth (7), wherein the nut has an inner tapered bore (6), a tapered sleeve (9) is provided in the nut inner tapered bore (6), the tapered sleeve (9) is a hollow tapered sleeve sheathing hole, a bottom part of the tapered sleeve sheathing hole is provided with a tapered sleeve inner tapered bore (18), a flared groove (24) is provided on the tapered sleeve inner tapered bore (18), a tapered sleeve sheathing hole wall (20) together with a tapered sleeve outer tapering oblique face forms a tapered sleeve tapering oblique angle (21), the connector outer frustum (5) squeezes the bell mouth (7) and squeezes the tapered sleeve inner tapered bore (18), and the tapered sleeve tapering oblique angle (21) was squeezed between the nut inner tapered bore (6) and a connecting pipe (10), sealing the connecting pipe (10) and forming a metallic hard seal between the connector outer frustum (5) and the tapered sleeve inner tapered bore (18), and the connecting pipe bell mouth (7) is squeezed between the connector outer frustum (5) and the flared groove (24), sealing the flared groove. The connecting pipe fitting for a pipeline has the advantages of fast and convenient sealed connection, low requirements in terms of sealing techniques, high sealing performance, being applicable to the connection of pipelines of various materials, and being completely interchangeable with existing connecting nuts.

Description

technical field [0001] The invention belongs to the field of mechanical manufacturing, and only 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 connection between pipe and pipe, pipe and other pipeline connectors includes 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 and convenient connection method, but the sealing pressure is low and the sealing reliability is poor, usually only used in sealing Connect to pipelines with pressure lower than 8MPa. Flare fittings usually consist of a nut, a fitting with an outer cone, and sometimes a bushing. The sealing principle of the expanded bell mouth c...

Claims

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Application Information

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IPC IPC(8): F16L19/028
CPCF16L19/043
Inventor 孙海潮
Owner 孙海潮
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