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Clasp pipe fitting for connecting thin-wall metal pipe

A technology for metal pipes and pipe fittings, which is applied in the field of pipe fittings connecting thin-walled metal pipes, and can solve problems such as extrusion of thin-walled metal pipes in place, difficulty in controlling the quality of connection between thin-walled metal pipes and pipe fittings, and high production costs

Inactive Publication Date: 2007-10-03
杭州航宇管业有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the performance of the pipe fittings connected by this method is insufficient: after the thin-walled metal pipe is connected with the pipe fitting, it is impossible to judge whether the ferrule squeezes the thin-walled metal pipe in place
It makes it difficult to control the quality of the connection between thin-walled metal pipes and fittings
At the same time, its structure is complex and its production cost is high.

Method used

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  • Clasp pipe fitting for connecting thin-wall metal pipe
  • Clasp pipe fitting for connecting thin-wall metal pipe
  • Clasp pipe fitting for connecting thin-wall metal pipe

Examples

Experimental program
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Embodiment Construction

[0007] Below, the present invention is described in further detail in conjunction with accompanying drawing and specific embodiment:

[0008] Fig. 1 shows: the shape of the pipe fitting mouth that is connected with the thin-walled metal pipe is a section of pipe with a special shape: the size of the inner diameter of the pipe is determined by just being able to insert the metal pipe to be connected. There are multiple protruding rings protruding outward on the pipe wall, and there are sealing rings or steel rings with openings in the protruding rings; further inside is a groove, and the distance from the groove to the fitting mouth can limit the length of the pipe inserted into the fitting .

[0009] Figure 2 shows the state when the thin-walled metal tube is inserted into the mouth of the fitting: after the metal tube is inserted into the fitting, the sealing ring and the opening steel ring are in the cavity between the outer wall of the metal tube and the inner wall of the p...

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Abstract

The pipe fitting has such inner diameter as to fit the thin wall metal pipe to be connected, and possesses several raised rings with sealing ring or open-mouthed steel wire ring in the wall. After the pipe is inserted into the pipe fitting, the raised rings are compressed radially with special tool so as to reduce the interval between the raised ring and the thin wall pipe. Meanwhile, the open-mouthed steel wire ring is extruded to clamp the thin wall pipe, the sealing ring is extruded to fill the reduced interval to avoid leakage, and the thin wall pipe is connected to the pipe fitting. The pipe fitting has low manufacture cost, simple construction, reliable connection and good sealing effect.

Description

Technical field [0001] The invention relates to a pipe fitting for connecting thin-walled metal pipes. technical background [0002] Thin-walled metal pipes are generally connected to pipe fittings by compression connection: insert the thin-walled metal pipe into the pipe fittings, then tighten the nuts on the pipe fittings, and forcibly compress the ferrules with large and small ends, so that the thin-walled metal pipes are squeezed and deformed. Connect with pipe fittings. At present, the performance of the pipe fittings connected by this method is insufficient: after the thin-walled metal pipe is connected with the pipe fitting, it is impossible to judge whether the ferrule squeezes the thin-walled metal pipe in place. It makes it difficult to control the quality of the connection between thin-walled metal pipes and pipe fittings. Simultaneously, its structure is complicated, and manufacturing cost is high. Contents of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L13/00F16L13/16
Inventor 万平华沈宇轩沈舞源
Owner 杭州航宇管业有限公司
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