Ship pipe line sleeve type electric coupling insulation method

A technology for pipelines and ships, applied in the field of galvanic couple insulation of ship pipelines, can solve the problems of increased cost, inconvenient manufacturing and assembly, etc., and achieves the effects of easy replacement, simple and easy assembly, and cost reduction.

Active Publication Date: 2006-11-08
HUDONG ZHONGHUA SHIPBUILDINGGROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these insulating sleeves are all non-standard insulating sleeves, which need to be specially designed and manufactured, which brings inconvenience to manufacturing and assembly and increases the cost

Method used

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  • Ship pipe line sleeve type electric coupling insulation method
  • Ship pipe line sleeve type electric coupling insulation method
  • Ship pipe line sleeve type electric coupling insulation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The ship pipeline casing type galvanic couple insulation method of the present invention is used for the connection of the alloy pipe in the ship pipeline and the piping accessories, such as figure 2 shown, including the following steps:

[0028] ①. Select the corresponding heat shrinkable sleeve specification according to the specification of the connecting bolt 7;

[0029] ②. According to the connection state of the connecting bolt 7, in order to achieve the galvanic insulation between the alloy pipe 1 and the piping accessory 2 (in this embodiment, it is necessary to ensure the insulation between the connecting bolt 7 and the alloy pipe 1 and the piping accessory 2), determine The length L1 of the heat-shrinkable sleeve that needs to be coated on the connecting bolt 7, and cut off the heat-shrinkable sleeve according to the length, and put it on the connecting bolt 7;

[0030] ③. Heat the heat-shrinkable sleeve with a cassette heating gun so that it is tightly wrap...

Embodiment 2

[0033] The ship pipeline casing type galvanic couple insulation method of the present invention is used for the connection between the alloy pipe and the support in the ship pipeline, such as image 3 shown, including the following steps:

[0034] ①. Select the corresponding heat shrinkable sleeve specifications according to the specifications of the U-bolt 14;

[0035] ②. According to the connection state of the U-shaped bolt 14, in order to achieve the galvanic insulation between the alloy pipe 1 and the support 12 (in this embodiment, it is necessary to ensure the insulation between the U-shaped bolt 14 and the alloy pipe 1), determine that the U-shaped bolt 14 is The length L2 of the heat-shrinkable sleeve needs to be coated, and the heat-shrinkable sleeve is cut according to this length, and put on the U-shaped bolt 14;

[0036] ③. Heat the heat-shrinkable sleeve with a cassette heating gun so that it is tightly wrapped on the U-shaped bolt 14;

[0037] ④. According to ...

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PUM

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Abstract

The invention relates to a method for insulating a marine pipeline casing type galvanic couple. A connector of a heat-shrinkable sleeve is used to connect components of different materials in the marine pipeline, and the heat-shrinkable sleeve is coated on the connector by heating. The invention adopts heat-shrinkable sleeves for galvanic couple insulation, meets the galvanic couple insulation requirements, does not produce non-standard parts, is easy to assemble, is convenient to replace, and reduces costs.

Description

technical field [0001] The invention relates to a method for preventing galvanic corrosion of dissimilar metals in a seawater piping system of a ship, in particular to a casing-type galvanic couple insulation method for a ship's pipeline. Background technique [0002] When a galvanic couple composed of different metals in electrical contact with each other is exposed to the electrolyte, a current flows from one metal to the other, and the corrosion of the metal with a lower potential is accelerated, and the corrosion of the metal with a higher potential is slowed down. This current is called galvanic corrosion current. On the lower potential metal where the corrosion is accelerated in the galvanic couple, the part of the corrosion that is equivalent to the galvanic corrosion current according to Faraday's law is called galvanic corrosion. The essence of galvanic corrosion is macroscopic galvanic corrosion composed of different metal or alloy electrodes. The principle is as f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F13/06
Inventor 汪裕明张旗
Owner HUDONG ZHONGHUA SHIPBUILDINGGROUP
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