Metal-to-metal sharp angle seal welding pipe joint

A technology of sealing welding and pipe joints, which is applied in the field of pipe joints, can solve the problems of cumbersome pipe flaring process, difficulty in achieving sealing effect, and low installation process requirements, so as to expand the scope of use, simple and reliable processing and use, and good sealing effect Effect
CN102032401BActive Publication Date: 2012-10-31海盐管件制造有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
海盐管件制造有限公司
Publication Date
2012-10-31

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Patent Text Reader

Abstract

The invention relates to a metal-to-metal sharp angle seal welding pipe joint. A pipe joint with simple installation and reliable mounting performance does not exist at present. The pipe joint comprises a joint body, a welding connection pipe with a connection pipe body and a nut, wherein the outer wall of the connection pipe body is provided with a circle of lug boss. The pipe joint is characterized in that: one end of the joint body is provided with a sealing plane; one end of the connection pipe body is provided with a sharp angle sealing ring with a sharp angle, the cross section of the sharp angle is provided with two edges, the included angle between the edge extending to the outer wall of the connection pipe body and the end face of the connection pipe body is 8 to 60 degrees, and included angle between the edge extending to the inner wall of the connection pipe body and the end face of the connection pipe body is 15 to 60 degrees; the other side of the lug boss is provided with a circle of stress plane and a circle of deformation groove with arc structure bottom; and the welding connection pipe is arranged in the nut, the nut is connected with the joint body, the sharp angle sealing ring is jacked on the sealing plane, and the stress plane is jacked on the nut. The pipe joint has reasonable design, simple installation, reliable sealing performance, high working pressure and wide application range.
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Description

technical field

[0001] The invention relates to a pipe joint, in particular to a metal-to-metal sharp corner seal welding pipe joint, which can effectively replace the 24° ferrule type pipe joint, the 37° flared pipe joint, and the flat O-ring seal welding type Pipe joints to connect pipeline engineering systems. Background technique

[0002] In modern industrial hydraulic and pneumatic systems, 24° ferrule type pipe joints, 37° flared pipe joints, and flat O-ring seal welded pipe joints are usually used to connect pipeline engineering systems. These three types of pipe joints have respectively The following properties.

[0003] 1. The 24° ferrule type pipe joint is a metal-to-metal seal of the 24° inner cone of the joint body. The cutting edge of the ferrule cuts into the outer wall of the steel pipe, and the outer circle of the ferrule squeezes the inner cone of the joint body to form a metal-to-metal seal. seal. The 24° ferrule pipe joint is usually used to connect ste...

Claims

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