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Pipe-jacking cathode protection embedding device and embedding method thereof

A cathodic protection and pipe jacking technology, which is applied in pipeline laying and maintenance, mechanical equipment, pipes/pipe joints/fittings, etc. It can solve the problems of difficulty in laying and replacing metal pipeline cathodic protection devices, and achieves simple structure, convenient construction, good maintenance effect

Active Publication Date: 2011-05-25
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a cathodic protection embedding device for pipe jacking, which can solve the problem of difficulty in laying and replacing cathodic protection devices for metal pipes during pipe jacking construction, including when crossing rivers, lakes and seas

Method used

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  • Pipe-jacking cathode protection embedding device and embedding method thereof
  • Pipe-jacking cathode protection embedding device and embedding method thereof
  • Pipe-jacking cathode protection embedding device and embedding method thereof

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Embodiment Construction

[0015] The following description will be made according to the drawings and specific embodiments of the present invention.

[0016] figure 1 Schematic diagram of the hole reserved for the protected pipeline. Before the pipe jacking construction, according to the design of the cathodic protection device, holes are reserved on the metal pipe 10 of the pipe jacking. The size of the holes is reserved according to the size of the anode block or the cable casing. Embed epoxy resin 3 for sealing, and pipe plug 2 is used to block the reserved short pipe 1 on the outside of the pipe. reserved holes such as figure 1 shown. In order not to hinder the jacking of the protected pipeline and the fluid delivery function of the pipeline, the reserved short pipe 1 should not be too large protruding from the inside and outside of the pipeline. If the reserved hole is large, it needs to be reinforced around the hole.

[0017] figure 2 It is the burial depth scheme for pipe jacking on land....

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Abstract

The invention discloses a pipe-jacking cathode protection embedding method. The method is characterized by comprising the following steps of: reserving a hole in a protected pipeline; and jacking an anode block or a cable sleeve out of the protected pipeline by adopting a vertical pipe jacking method in the protected pipeline. By using the method, the problem that a metal pipeline cathode protection device is difficult to lay and replace when crossing rivers, lakes and seas in pipe-jacking construction are solved. The method is developed aiming at that the anode block and a connecting cable cannot be embedded when performing pipe-jacking on the metal pipeline, has the characteristics that the structure is simple, the method is convenient to construct, and the cost is low. A pipe-jacking metal pipeline can be maintained better, and the service life thereof can be prolonged.

Description

Technical field: [0001] The invention belongs to the field of metal pipeline cathodic protection and pipe jacking construction, and in particular relates to an embedding device and embedding method of a metal pipeline cathodic protection device during pipe jacking construction. Background technique: [0002] Pipe jacking construction technology is a non-excavation technology for laying underground pipelines that better protects the environment. Under the condition of not disturbing or slightly disturbing the soil structure outside the pipe, with the help of the thrust of the jacking equipment such as the main jacking pump, the tool pipe or roadheader is passed from the working well through the soil layer along the line into the receiving well. Therefore, pipe jacking pipelines are generally laid deep, 5m to 20m below the ground, and some often cross rivers, lakes and seas. These pipelines are generally more important and require long service life. Cathodic protection is requ...

Claims

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Application Information

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IPC IPC(8): F16L1/028C23F13/02
Inventor 郑国兴许龙樊华青钟俊彬
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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