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Cathodic protection system for parallel ore pulp conveying pipelines

A transportation pipeline and cathodic protection technology, which is applied in the field of cathodic protection system of parallel slurry transportation pipeline, can solve the problems of fast corrosion, effective protection and high cost of pipelines, and achieve the effect of reducing erosion speed, reducing failure speed and saving installation

Active Publication Date: 2017-05-31
YUNNAN DAHONGSHAN PIPELINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems existing in the prior art on parallel 2 or more pipelines: high cost, fast corrosion of pipelines, and difficulty in effectively protecting all pipelines, the present invention provides a cathodic protection system for parallel ore slurry conveying pipelines, including an anode Bed, first power supply and monitoring pile

Method used

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  • Cathodic protection system for parallel ore pulp conveying pipelines
  • Cathodic protection system for parallel ore pulp conveying pipelines
  • Cathodic protection system for parallel ore pulp conveying pipelines

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A parallel slurry pipeline cathodic protection system, such as figure 1 As shown, it includes an anode bed 2, a first power source 3 and two parallel and co-directed pipelines 1 to be protected. The first power supply 3 is a DC power supply. The anode bed 2 communicates with the positive pole of the first power supply 3 , and the pipelines 1 to be protected are connected in parallel with the negative pole of the first power supply 3 . The pipeline 1 to be protected is provided with a monitoring pile 4 for monitoring the condition of the pipeline. The pipelines 1 to be protected are connected in parallel at the monitoring pile 4 through a pressure equalizing line. The anode bed 2 includes a high silicon cast iron anode 202 connected to the positive pole of the first power supply 3 . The high silicon cast iron anode 202 is embedded in the coke slag bed 201 . The coke slag bed 201 is set at a position 100 m away from the pipeline 1 to be protected. The pipeline to be ...

Embodiment 2

[0035] A parallel slurry pipeline cathodic protection system, such as figure 1As shown, it includes an anode bed 2, a first power source 3 and two parallel and co-directed pipelines 1 to be protected. The first power supply 3 is a DC power supply. The anode bed 2 communicates with the positive pole of the first power supply 3 , and the pipelines 1 to be protected are connected in parallel with the negative pole of the first power supply 3 . The pipeline 1 to be protected is provided with a monitoring pile 4 for monitoring the condition of the pipeline. The pipelines 1 to be protected are connected in parallel at the monitoring pile 4 through a pressure equalizing line. The anode bed 2 includes a high silicon cast iron anode 202 connected to the positive pole of the first power supply 3 . The high silicon cast iron anode 202 is embedded in the coke slag bed 201 . The coke slag bed 201 is set at a position 50m away from the pipeline 1 to be protected. The pipeline to be pro...

Embodiment 3

[0037] A parallel slurry pipeline cathodic protection system, such as figure 1 As shown, it includes an anode bed 2, a first power source 3 and two parallel and co-directed pipelines 1 to be protected. The first power supply 3 is a DC power supply. The anode bed 2 communicates with the positive pole of the first power supply 3 , and the pipelines 1 to be protected are connected in parallel with the negative pole of the first power supply 3 . The pipeline 1 to be protected is provided with a monitoring pile 4 for monitoring the condition of the pipeline. The pipelines 1 to be protected are connected in parallel at the monitoring pile 4 through a pressure equalizing line. The anode bed 2 includes a high silicon cast iron anode 202 connected to the positive pole of the first power supply 3 . The high silicon cast iron anode 202 is embedded in the coke slag bed 201 . The coke slag bed 201 is set at a position 150m away from the pipeline 1 to be protected. The pipeline to be p...

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PUM

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Abstract

The invention provides a cathode protection system for parallel ore pulp conveying pipelines for overcoming the defects existing in the prior art. The cathode protection system for the parallel ore pulp conveying pipelines comprises an anode bed (2), a first power supply (3) and two or more to-be-protected pipelines (1) which are parallel and convey in the same direction; the anode bed (2) communicates with the anode of the first power supply (3), after all the to-be-protected pipelines (1) are connected in parallel, all the to-be-protected pipelines (1) communicate with the cathode of the first power supply (3); and monitoring piles (4) for monitoring the states of the pipelines are installed on the to-be-protected pipelines (1); and all the to-be-protected pipelines (1) are in connected in parallel on the monitoring piles (4) through equalizing wires. According to the cathode protection system for the parallel ore pulp conveying pipelines; effective protection on impressed current cathodes of the two or more parallel pipelines can be achieved through one cathode protection system, and installing and maintaining cost of equipment is saved; and the head and tail ends of the pipelines and the connection ends of all the monitoring piles are in connected in parallel through the equalizing wires, voltage on all the pipelines is balanced, and the quantity and strength of stray currents between the pipelines are lowered.

Description

technical field [0001] The invention belongs to the technical field of long-distance pipeline transportation, and in particular relates to a cathodic protection system for parallel ore slurry transportation pipelines. Background technique [0002] "Long-distance iron ore concentrate pipeline transportation" is an emerging, high-tech industry, and a highlight of low-carbon and green economy. Long-distance iron ore concentrate pipelines are made of special alloy materials, and are buried on the surface for a long time during the period of use Next, long-distance iron ore concentrate pipelines made of special alloys will be affected by the environment and corrode. [0003] When a metal corrodes, an electric current is generated, and the area where the corrosion occurs is called the anode. Instead, the current enters the soil or other environmental medium and flows to the uncorroded area or cathode. At the same time, the same amount of electrons flows from the anode to the cat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F13/06C23F13/20
Inventor 刘洪蔡艳红杨建平黄科杨晓亮谢刚杨孙红
Owner YUNNAN DAHONGSHAN PIPELINE