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Connecting method of polyethylene composite tubes of steel wire gauze framework

A technology of polyethylene composite pipe and connection method, which is applied in the direction of flange connection, pipe/pipe joint/pipe fitting, passing components, etc., and can solve the problems of poor high pressure resistance performance of capacitive connection, pipeline affecting liquid transportation, high cost of crimping mold, etc. , to achieve the effect of firm connection, long-term safe operation and easy assembly

Inactive Publication Date: 2013-07-24
SHANDONG DONGHONG PIPE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The problem is that the capacitive connection has poor high pressure resistance, and the connection of metal crimping pipe fittings requires a huge investment in crimping equipment for large-diameter pipelines, and the cost of crimping molds is too high. After the connection, there are bosses in the pipeline and affect liquid transportation.

Method used

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  • Connecting method of polyethylene composite tubes of steel wire gauze framework
  • Connecting method of polyethylene composite tubes of steel wire gauze framework

Examples

Experimental program
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Effect test

Embodiment

[0017] Example: in figure 1 In the process, the flange plate 3 is first set on the pipe body 1, and the pipe body 1 is connected with the metal sleeve 2 through the 90° outward flanging of the end. After the metal sleeve 2 is crimped, the inverted tooth 8 is pressed into the pipe body 1 inside. There is a groove on the outer circle of the end of the metal sleeve 2 . Utilize external force to press the inverted teeth of the inner circle of the end of the metal hoop 5 into the groove on the outer circle of the metal sleeve 2, so that the 90° outer flange at the end of the pipe body 1 is closely attached to the metal sleeve 2. The outer diameter of the sealing rubber washer 6 is slightly smaller than the inner diameter of the end face of the ferrule 5 . When connecting, put the sealing rubber gasket 6 between the inner diameters of the end faces of the two pipe bodies 1 and the end faces of the ferrule 5, and then fasten them into one body with bolts 4 and nuts 7.

[0018] exi...

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Abstract

The invention relates to a connecting method of polyethylene composite tubes of a steel wire gauze framework. The method comprises the following steps of: processing a turnup at 90 degrees at the end of a pipeline and adding a metal sleeve on the outer surface at the pipe end; buckling the two integrally; and connecting the turnup at 90 degrees and the metal sleeve by a metal hoop to enhance the strength of the turnup at 90 degrees. In addition, when the pipelines are connected, the metal hoop further has the effect of enhancing the strength of sealing gaskets among the pipe ends, so that the pressure bearing capacity in the connecting part is improved, and the pressure bearing capacity in the connecting part is greater than that of the tube product.

Description

Technical field [0001] The invention relates to engineering pipelines, in particular to a method for connecting steel wire frame polyethylene composite pipes, which is used for connection of steel wire frame polyethylene composite pipes for water supply and drainage and the like. Background technique [0002] At present, the known connection methods for polyethylene composite pipes with steel mesh skeletons are electrothermal fusion pipe fittings connection and metal crimping pipe fittings connection. The problem is that the capacitive connection has poor high pressure resistance, and the metal crimping pipe connection has a huge investment in crimping equipment for large-diameter pipelines, and the cost of crimping molds is too high. After the connection, there are bosses in the pipeline and affect liquid transportation. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a new connection met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L23/028F16L23/22
Inventor 倪奉尧王立凯
Owner SHANDONG DONGHONG PIPE IND
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