Electrofusion connection pipe fitting

A technology for electrofusion pipe fittings and connecting pipe fittings, which is applied in the field of PE pipes and can solve problems such as leakage, affecting the strength and quality of pipes, and weakening the strength of sockets and sockets.

Active Publication Date: 2020-07-07
江苏芬茂新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing electrofusion connection pipe fittings cannot ensure the connection quality well, which will affect the strength and quality of the pipeline. At the same time, the existing electrofusion connection pipe fittings will not The strength of the socket will be weakened, and it is prone to leakage and safety accidents during transmission. The purpose is to provide an electrofusion connection pipe fitting and its preparation method to solve the connection problem of the electrofusion connection connection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The present invention is an electrofusion connection pipe fitting, which comprises an electrofusion pipe fitting 1, a resistance wire 3 is spirally wound on the inner wall between two conductive copper columns 2 of the electrofusion pipe fitting 1, and one end of each of the two PE pipes 5 is respectively inserted into the electrofusion pipe fitting 1. Both ends of pipe fitting 1 are connected, such as figure 2 and 3 As shown, the outer wall of the electrofusion pipe fitting 1 is provided with two through grooves 4, and the two PE pipes 5 are provided with grooves 6 corresponding to the through grooves 4, as figure 1 As shown, when two PE pipes 5 are connected in the electrofusion fitting 1, the grooves 6 on the two PE pipes 5 correspond to and communicate with the two through grooves 4 respectively;

[0046] The two ends of the resistance wire 3 are respectively connected to the two conductive copper columns 2 on the electrofusion pipe fitting 1, and the middle secti...

Embodiment 2

[0052] On the basis of Example 1, when welding PE80 / PE100 pipe fittings / pipes, first ensure the temperature environment: -5°C to 40°C;

[0053] When welding, first measure and use a marking pen to mark the depth or welding area inserted into the electric fusion pipe fitting 1 on the pipe; completely remove the oxide layer in the pipe welding area before welding. The welding surface of the pipe and the electrofusion fitting 1 must be absolutely clean, dry and free from oil. Insert the welded end of the pipe into the port of the electrofusion fitting 1 to the marking depth on the PE pipe 5. At this time, the PE stopper 12 on the inner wall of the electrofusion fitting 1 is inserted into the retaining groove 13 of the PE pipe 5 to limit the position;

[0054] After inserting the PE pipe, press the reinforcing plate 8 downward, so that the fixing part 7 enters the groove 6 on the PE pipe 5 through the through groove 4, and then the PE pipe 5, the reinforcing part and the electrofu...

Embodiment 3

[0063] On the basis of Example 2, such as Figure 8 As shown, there is an elastic hollow rubber buffer tube 11 between the reinforcing plate 8, the fixing plate 10 and the outer wall of the electrofusion pipe fitting 1. For the natural gas pipeline, the PE pipe 5 of SDR17.6 and de90 made of PE100 is used; The outer diameter of the tube 5 is 90 mm.

[0064] The outer diameter of the electrofusion pipe fitting 1 is 120mm, and the thickness of the buffer pipe 11 is 6mm.

[0065] The length of the fixing part 7 in the direction perpendicular to the axis of the electrofusion pipe part 1 is three times the diameter of the resistance wire 3, and the placement groove 9 is located at the center of the length.

[0066] The depth of the groove 6 is 1.7 mm. At the same time, an inorganic gas barrier thin film layer is provided on the surface of the reinforcing plate 8 in contact with the electrofusion pipe fitting 1, and the thickness of the inorganic gas barrier thin film layer is 0.2 ...

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Abstract

The invention discloses an electrofusion connection pipe fitting. The electrofusion connection pipe fitting comprises an electrofusion pipe fitting and two PE pipes, wherein a resistance wire is spirally wound around the inner wall, between two conductive copper pillars, of the electrofusion pipe fitting, and two corresponding ends of the two PE pipes are inserted into two ends of the electrofusion pipe fitting respectively for connection. The electrofusion connection pipe fitting is characterized in that the outer wall of the electrofusion pipe fitting is provided with two through slots, thetwo PE pipes are provided with grooves corresponding to the through slots, and when the two PE pipes are connected into the electrofusion pipe fitting, the grooves in the two PE pipes correspond to and communicate with the two through slots respectively. The structure is an integrated connection structure; in the electrofusion welding process of the electrofusion pipe fitting and the PE pipes, a reinforcing piece is directly fixed into the electrofusion pipe fitting, and the strength of a birdmouth after connection can be effectively improved; and meanwhile, when the structure is powered on, the lower end of a fixed plate and the lower end of the electrofusion pipe fitting are in the same horizontal straight line.

Description

technical field [0001] The invention relates to the field of PE pipes, in particular to an electrofusion connecting pipe fitting. Background technique [0002] At present, electrofusion connection is a widely used connection technology in plastic pipes. The known PE pipe connectors are divided into hot-melt PE pipe fittings and electro-fusion PE pipe fittings according to the welding method. The hot-melt PE pipe fittings do not have resistance wires. The diameter is equal to the inner diameter of the fused PE pipe fitting. When in use, insert the PE pipe or hot-melt PE pipe fitting into the socket of the fused PE pipe fitting, and use an electric fusion welding machine to apply a certain The electric heating wire connected between the two copper columns melts and fuses the raw materials at the joint between the inner wall of the electric fusion PE pipe fitting and the PE pipe or hot-melt PE pipe fitting. [0003] Due to the low pressure used, the commonly used electrofusion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L47/03
CPCF16L47/03
Inventor 高友华
Owner 江苏芬茂新材料科技有限公司
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