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Spraying pipeline corrosion prevention method

A technology for pipes and anti-corrosion coatings, which is applied to coatings, special surfaces, and devices for coating liquids on surfaces.

Inactive Publication Date: 2018-10-12
YANGJIANG NUCLEAR POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an anti-corrosion method for spray pipelines in view of the defects in the prior art that the anti-corrosion requirements of the equipment cannot be guaranteed or that the regular replacement and maintenance costs are high.

Method used

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  • Spraying pipeline corrosion prevention method
  • Spraying pipeline corrosion prevention method
  • Spraying pipeline corrosion prevention method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] refer to figure 1 , a kind of anticorrosion method for spray pipeline provided by embodiment 1, specifically comprising:

[0042] S101: Use anti-corrosion paint to paint the nozzle seat and nozzle of the pipeline step by step; this step is mainly to paint the internal threaded hole of the nozzle seat and the external thread of the nozzle.

[0043] The original material of the spray pipe is stainless steel. Due to the presence of chromium oxide on the surface of stainless steel, general paint cannot achieve high adhesion on the surface of stainless steel. For this reason, this embodiment uses ceramic paint, for example, it can be a ceramic containing CP CN-OC The paint can dissolve the chromium oxide on the surface of stainless steel, and finally form a carbonized bond to directly contact the crystal of the stainless steel surface, and obtain excellent adhesion on the surface of the stainless steel.

[0044] S102: After painting the nozzle holder and the nozzle holder, ...

Embodiment 2

[0047] refer to Figure 2-5 , the second embodiment is based on Figure 2-5 The operation of the system shown is completed. Specifically, the whole system includes a pipe support 25 for supporting the pipeline 11 to be processed horizontally and making the nozzle seat 12 of the pipeline 11 upward, and a nozzle for painting the nozzle 13 of the pipeline 11 with anti-corrosion paint. Construction equipment, internal pipeline construction equipment for spraying anti-corrosion paint on the inner wall of the pipeline 11.

[0048] refer to Figure 2-3 , wherein, the nozzle construction equipment includes: a removable anti-clogging member 14 filled in the nozzle 13, a removable paint receiving tank 15 placed in the pipeline 11, and a brush.

[0049] Specifically, the size of the brush needs to ensure that it can extend into the internal threaded hole of the nozzle seat 12 to paint the threaded part. The brushes can be machine controlled.

[0050]Specifically, the anti-clogging me...

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Abstract

The invention discloses a spraying pipeline corrosion prevention method which comprises the following steps in sequence: step 1, brushing nozzle seats (12) and nozzles (13) of a pipeline (11) step bystep by adopting anti-corrosive paint; step 2, after the nozzle seats (12) and the nozzles (13) are brushed, sequentially mounting all the nozzles (13) onto the corresponding nozzle seats (12); and step 3, spraying the anti-corrosive paint onto the inner wall of the pipeline (11). According to the spraying pipeline corrosion prevention method disclosed by the invention, the whole material of the pipeline need not be changed and all that is needed for corrosion prevention is to brush the existing pipeline by adopting the anti-corrosive paint, so that the availability of the existing pipeline equipment can be improved and the maintenance cost can be reduced; furthermore, during the nozzle seat and nozzle brushing process, the nozzle seats of the pipeline can be kept upward through a pipelinebracket, and thus the construction convenience can be achieved; meanwhile, the nozzles can be filled with anti-blocking parts, and thus the nozzles can be prevented from being blocked during the brushing process; and consequently, the comprehensive brushing of the spraying pipeline can be achieved.

Description

technical field [0001] The invention relates to the field of maintenance of nuclear power pipelines, in particular to an anticorrosion method for spray pipelines. Background technique [0002] CFI system (seawater filtration system) backwash pipeline is prone to corrosion and perforation during daily operation. The material of backwash pipeline is generally stainless steel, which is prone to corrosion in seawater environment. Since the backwashing pipeline of the CFI system is nuclear-grade equipment, and the stainless steel materials that meet the corrosion resistance requirements at this stage are not nuclear-grade materials, it is impossible to improve the corrosion resistance of the backwashing pipeline of the CFI system by changing the material. Therefore, the existing Technology In order to ensure the anti-corrosion requirements of the equipment, the pipes are generally replaced or repaired regularly, which is costly. Contents of the invention [0003] The technical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/02B05D1/28B05D1/32B05D7/22B05D5/00B05D7/24
CPCB05D1/02B05D1/28B05D1/32B05D5/00B05D7/22B05D7/24
Inventor 董洪全马大海张大勇李克陈利平骆云龙吴文华刘浩陈永林
Owner YANGJIANG NUCLEAR POWER