CN-224227221-U - Pipeline built-in cathode protection system

CN224227221UCN 224227221 UCN224227221 UCN 224227221UCN-224227221-U

Abstract

The utility model relates to a pipeline built-in cathode protection system which comprises a pipeline, a constant potential rectifier, a loop cable and a protection structure, wherein one end of the loop cable is welded with the pipeline, the other end of the loop cable is connected with the constant potential rectifier, one end of the protection structure is arranged in the pipeline, the other end of the protection structure is connected with the constant potential rectifier, the protection structure comprises an electrode body, a flange assembly comprises a base flange and a gland flange, the base flange is arranged to penetrate from the interior of the pipeline to the exterior, the gland flange is arranged in the pipeline and is used for being matched with the base flange to fix the electrode body, the base flange is provided with a hollow cavity for the electrode cable to penetrate through, one end of the electrode cable is connected with the electrode body, the other end of the electrode cable is connected with the constant potential rectifier, the cathode protection effect of the pipeline can be achieved, and the installation, maintenance and replacement of the electrode body can be carried out in the pipeline, so that the problems that an inspection well is required to be arranged on an electrode of a buried pipeline inner wall external current cathode protection system are avoided.

Inventors

ZHANG KUIZHI
CHEN JINPENG
ZHOU SHAOXU
PANG QIWEI
HUANG WENWEI
ZHOU YIJUN
SUN CHAO

Assignees

青岛赢海防腐防污技术有限公司

Dates

Publication Date: 20260512
Application Date: 20250513

Claims (10)

1. The built-in cathode protection system for the pipeline is characterized by comprising a pipeline, a constant potential rectifier, a loop cable and a protection structure, wherein one end of the loop cable is welded with the pipeline, the other end of the loop cable is connected with the constant potential rectifier, one end of the protection structure is arranged in the pipeline, and the other end of the protection structure is connected with the constant potential rectifier; the protection structure comprises: The electrode body is positioned inside the pipeline; The flange assembly comprises a base flange and a gland flange, wherein the base flange is arranged to penetrate out from the inside of a pipeline to the outside so that part of the base flange is abutted to the inner wall of the pipeline, the gland flange is positioned inside the pipeline and is used for being matched with the base flange to fix the electrode body, the base flange is provided with a hollow cavity through which an electrode cable penetrates, one end of the electrode cable is connected with the electrode body, and the other end of the electrode cable is connected with a potentiostat.
2. The in-line cathodic protection system of claim 1 wherein the protective structure further comprises a seal assembly positioned above the base flange, interfacing with the base flange and having perforations through which the electrode cable passes.
3. The in-line cathodic protection system of claim 2 wherein the seal assembly comprises a first interface member in interface with the base flange, a second interface member having a first recess, a third interface member having a first protrusion and a second recess that mate with the first recess, and a seal ring having a second protrusion that engages with the second recess, the seal ring being positioned between the second protrusion and the second recess, the perforations passing sequentially through the first, second and third interface members.
4. The in-line cathodic protection system of claim 1 wherein the electrode cable comprises a first electrode cable and a second electrode cable connected to the first electrode cable, the first electrode cable adapted to be connected to the electrode body, the second electrode cable adapted to be connected to the potentiostat.
5. The in-line cathodic protection system of claim 4 wherein the protective structure further comprises a first sealing connection within the hollow cavity for connecting the first electrode cable and the second electrode cable.
6. The in-line cathodic protection system of claim 4 wherein the protective structure further comprises a second sealing connection for connecting the first electrode cable with the electrode body.
7. The in-line cathodic protection system of claim 6 wherein the second sealing connection has a plug portion and a plug aperture disposed on the plug portion, the first electrode cable being adapted to be connected through the plug aperture.
8. The in-line cathodic protection system of claim 4 wherein the first electrode cable has a length of 30-40cm.
9. The in-line cathodic protection system of claim 1 wherein the protective structure further comprises a fastener and a resilient pad for connecting the base flange and the gland flange.
10. The in-line cathodic protection system of claim 1 wherein the potentiostat comprises a tank, a loop connection location and an electrode connection location within the tank, the loop cable being connected to the loop connection location, the electrode cable being connected to the electrode connection location.

Description

Pipeline built-in cathode protection system Technical Field The utility model relates to the technical field of cathode protection, in particular to a pipeline built-in cathode protection system. Background The buried pipeline (equipment) adopts an impressed current cathodic protection system, and the pipeline (equipment) and the corresponding cathodic protection electrodes (auxiliary anode and reference electrode) need to be buried back. In order to install the electrodes and to repair and replace the electrodes in the later period, an inspection well is usually required to be prefabricated at each electrode installation position, so that the problems of large civil engineering quantity, large occupation of the inspection well and the like are caused. Meanwhile, because the pipeline (equipment) and the electrode mounting positions are deeper, the underground water of the inspection well is permeated, collapse exists and the like, and the site space of a factory is limited, a plurality of areas of the inspection well cannot be provided, and an impressed current system cannot be mounted and implemented. Accordingly, there is a need for an improvement over the prior art to overcome the deficiencies described in the prior art. Disclosure of utility model In view of this, an embodiment of the present application provides a cathode protection system with a built-in pipeline for solving at least one problem existing in the background technology, including a pipeline, a potentiostat, a loop cable, and a protection structure, where one end of the loop cable is welded with the pipeline, the other end of the loop cable is connected with the potentiostat, one end of the protection structure is disposed in the pipeline, and the other end of the protection structure is connected with the potentiostat; the protection structure comprises: The electrode body is positioned inside the pipeline; The flange assembly comprises a base flange and a gland flange, wherein the base flange is arranged to penetrate out from the inside of a pipeline to the outside so that part of the base flange is abutted to the inner wall of the pipeline, the gland flange is positioned inside the pipeline and is used for being matched with the base flange to fix the electrode body, the base flange is provided with a hollow cavity through which an electrode cable penetrates, one end of the electrode cable is connected with the electrode body, and the other end of the electrode cable is connected with a potentiostat. Optionally, in the cathode protection system with a built-in pipe, the protection structure further comprises a sealing assembly, wherein the sealing assembly is located above the base flange, is in butt joint with the base flange, and is provided with a through hole for the electrode cable to pass through. Optionally, the above-mentioned cathodic protection system with built-in pipeline, seal assembly include with the first butt joint spare, second butt joint spare, third butt joint spare and the sealing washer of base flange butt joint, first butt joint spare with the base flange butt joint, first butt joint spare has first recess, the second butt joint spare have with first protruding portion and the second recess of first recess adaptation, first protruding portion with first recess block, the third butt joint spare has the second protruding portion, second protruding portion with second recess block, the sealing washer is located between second protruding portion with second recess, the perforation passes in proper order first butt joint spare, second butt joint spare and third butt joint spare. Optionally, in the cathode protection system with built-in pipeline, the electrode cable includes a first electrode cable and a second electrode cable connected with the first electrode cable, the first electrode cable is suitable for being connected with the electrode body, and the second electrode cable is suitable for being connected with the potentiostat. Optionally, in the cathode protection system with a built-in pipeline, the protection structure further includes a first sealing connector located in the hollow cavity, and the first sealing connector is used for connecting the first electrode cable and the second electrode cable. Optionally, in the cathode protection system with a built-in pipeline, the protection structure further includes a second sealing connector, and the second sealing connector is used for connecting the first electrode cable and the electrode body. Optionally, in the cathode protection system with a built-in pipeline, the second sealing connector is provided with a plug part and a plug hole arranged on the plug part, and the first electrode cable is suitable for being connected through the plug hole. Optionally, in the cathode protection system with built-in pipeline, the length of the first electrode cable is 30-40cm. Optionally, in the cathode protection system with a built-in pipeline, the protection structure