On-line Repair Method for Corrosion and Perforation of Seawater Metal Pipeline

A technology for metal pipes and seawater, applied in the direction of pipe components, pipes/pipe joints/fittings, mechanical equipment, etc., can solve the problems of pipeline isolation and maintenance, and achieve the effect of good plugging quality, less manpower and high efficiency

Active Publication Date: 2018-12-04
GUANGDONG NUCLEAR POWER JOINT VENTURE +5
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide an online repair method for corrosion and perforation of seawater metal pipelines, which aims to solve the problem that the existing seawater metal pipeline corrosion and perforation maintenance treatment requires isolated maintenance of pipelines

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  • On-line Repair Method for Corrosion and Perforation of Seawater Metal Pipeline
  • On-line Repair Method for Corrosion and Perforation of Seawater Metal Pipeline
  • On-line Repair Method for Corrosion and Perforation of Seawater Metal Pipeline

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] see Figure 1-Figure 8 According to an embodiment of the present invention, an online repair method for corrosion and perforation of seawater metal pipelines includes the following steps:

[0023] Preparation S1: provide a metal bar 61 that can be inserted into the corrosion perforation on the seawater metal pipeline, a first rubber pad 62 and a noose device 10 for fixing the metal bar 61 on the seawater metal pipeline , the reducibility of the metal bar 61 is stronger than that of the metal used to make the seawater metal pipeline, the first rubber pad 62 is provided with a first opening 6...

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Abstract

The invention is suitable for the field of seawater metallic pipeline repairing and provides an online repairing method for a corroded perforated hole of a seawater metallic pipeline. The method comprises the following steps: supplying a metal bar, a first rubber pad and a rope sling device, wherein the reducibility of the metal bar is higher than that of the metal for preparing the seawater metallic pipeline; covering the first rubber pad onto the metal bar, assembling the rope sling device on the seawater metallic pipeline, and aligning the metal bar with the corroded perforated hole; clamping the rope sling device on the seawater metallic pipeline, and pressing and jointing the first rubber pad with the seawater metallic pipeline; and inserting the metal bar into the corroded perforated hole. The first rubber pad is arranged, the rope sling device is resisted against the seawater metallic pipeline, and the metal bar is used for blocking the corroded perforated hole, so that the leakage can be prevented. The reducibility of the metal bar is higher than that of the metal for preparing the seawater metallic pipeline, so that the metal bar is firstly corroded when the pipeline is corroded by seawater. According to the method, the online repairing treatment can be realized, the isolating repairing for the pipeline is not required, and thus the efficiency is high.

Description

technical field [0001] The invention belongs to the field of repairing seawater metal pipelines, and in particular relates to an online repair method for corrosion and perforation of seawater metal pipelines. Background technique [0002] Metal pipes are widely used as seawater pipes in industries such as oil exploration, nuclear power operation, and ship driving to exchange heat and cool down equipment through seawater. Especially in nuclear power plants, with the increase of the operating life of nuclear power units, the corrosion problem of seawater metal pipelines is becoming more and more serious. Problems caused by corrosion, such as on-site pipeline leakage, pipe wall thinning, and pipeline perforation, have become an important issue that plagues the nuclear safety of nuclear power plants. one of the problems. Taking the two units of Daya Bay Power Station that have been in operation for 20 years as an example, the pipeline corrosion problem is obvious. The on-site i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L55/172
CPCF16L55/172
Inventor 严海德曹先萌潘昭田闯
Owner GUANGDONG NUCLEAR POWER JOINT VENTURE
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