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RTP tube electric-melting non-variable-size connecting structure and connecting method thereof

A connection structure and connection method technology, which is applied in the direction of pipeline connection arrangement, pipe/pipe joint/fitting, mechanical equipment, etc., can solve the problems of RTP pipeline connection parts such as low strength, small high pressure resistance, and increased outer diameter, and achieve Good connection effect, good integrity, and increased welding area

Pending Publication Date: 2019-08-16
武汉海威船舶与海洋工程科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an RTP pipeline with reasonable design, convenient construction, Provide enough strength to ensure the safety of pipeline transportation and RTP pipe electrofusion hot melt connection structure and its connection method without changing the size of the connection

Method used

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  • RTP tube electric-melting non-variable-size connecting structure and connecting method thereof
  • RTP tube electric-melting non-variable-size connecting structure and connecting method thereof
  • RTP tube electric-melting non-variable-size connecting structure and connecting method thereof

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Embodiment Construction

[0028] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0029] Such as Figure 1-3 As shown, it is the RTP pipe electrofusion hot melt constant size connection structure of a preferred embodiment of the present invention, including the first RTP pipe 10 and the second RTP pipe 20 for butt joint, the first RTP pipe 10 is a three-layer structure, From the inner layer to the outer layer, it includes a PE inner pipe 11, a continuous fiber reinforced layer 12 and a PE outer layer 13, wherein the end of the PE inner pipe 11 exposes a pre-melted section 111 of a preset length outward in the axial direction . The structure of the second RTP pipe 20 is the same as that of the first RTP pipe 10 , and the length of the pre-melting section 111 is also the same. The connection structur...

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Abstract

The invention relates to an RTP tube electric-melting non-variable-size connecting structure and a connecting method thereof. The connecting structure comprises a first RTP tube, a second RTP tube anda glass fiber reinforced PE sleeve which are in butt joint, wherein a section of pre-melting section is arranged at the end of a PE inner tube of the first RTP tube in the axial direction; the structure of the second RTP tube is the same as the structure of the first RTP tube; the length of the glass fiber reinforced PE sleeve is equal to twice the length of the pre-melting section, an outer diameter of the glass fiber reinforced PE sleeve is the same as an outer diameter of the RTP tube, and a heating coil is embedded in the glass fiber reinforced PE sleeve or a self-hot-melt material is added into the glass fiber reinforced PE sleeve; the pre-melting section of the first RTP tube and the pre-melting section of the second RTP tube are oppositely inserted into the glass fiber reinforced PE sleeve, and an outer surface of the pre-melting section and an inner surface of the glass fiber reinforced PE sleeve are subjected to electric smelting or hot melt welding. According to the connecting method, the connection of the PE inner tube is realized, the strength of a pipeline connection part is improved, the pipeline transportation safety is ensured, the size of the connection part is not changed, the safety coefficient of the design of a composite material pipeline system is improved, and the large-scale industrial application process of the RTP pipeline is promoted.

Description

technical field [0001] The invention relates to the technical field of application of polymer and composite material pipelines, in particular to an electric fusion hot-melt connection structure and a connection method for RTP pipes without changing the size. Background technique [0002] Reinforced thermoplastic pipe (RTP) consists of a three-layer structure, the inner layer is a polyethylene (PE) anti-corrosion layer, the middle layer is a high-strength continuous fiber reinforced layer, and the outer layer is a protective layer of PE. The production process is to first extrude the inner high-density polyethylene (HDPE) tube, then use the winding machine to wind the continuous fiber-reinforced prepreg tape with four strands in a forward and reverse direction, and finally extrude the outer protective layer. [0003] The currently recognized RTP pipe connection methods include electric thermal fusion connection and metal mechanical seal connection. Among them, the commonly u...

Claims

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Application Information

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IPC IPC(8): F16L47/02
CPCF16L47/02
Inventor 王继辉陈宏达孙子恒韩霞成天健王静南庞晓彬
Owner 武汉海威船舶与海洋工程科技有限公司
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