High-potential metal seawater pipeline penetration piece with composite structure

A composite structure, high-potential technology, applied in the direction of pipes/pipe joints/fittings, passage components, pipes, etc., can solve problems such as steel corrosion of tank fittings, macro corrosion batteries, corrosion of steel inner tubes of tank fittings, etc. Achieve low cost, reduce openings and corresponding reinforcement requirements, and avoid electrochemical corrosion problems
CN102758971AInactive Publication Date: 2012-10-31NO 719 RES INST CHINA SHIPBUILDING IND
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NO 719 RES INST CHINA SHIPBUILDING IND
Publication Date
2012-10-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of ship engineering and provides a high-potential metal seawater pipeline penetration piece with a composite structure. The high-potential metal seawater pipeline penetration piece comprises an inner pipe, a flange and a sleeve, wherein the inner pipe and the flange are made of high-potential metal and the sleeve is made of low-potential metal; the inner pipe and the sleeve are concentric pipelines, wherein the inner diameter of the sleeve is larger than the outer diameter of the inner pipe, the sleeve is shorter than the inner pipe, and the sleeve is connected with a low-potential metal ship structure plate; and two ends of the inner pipe are fixedly connected with the concentric flange, and the flange is connected with a high-potential metal pipeline. The high-potential metal seawater pipeline penetration piece is simple in structure and convenient to use, can structurally ensure that a high-conductivity medium can be in simultaneously contact with the high-potential metal and the low-potential metal and thoroughly solves the electrochemical corrosion problem.
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Description

technical field

[0001] The invention belongs to the field of ship engineering, and in particular relates to a high-potential metal seawater pipeline tank-passing pipe fitting of a composite structure. Background technique

[0002] Passage pipe fittings are an important part of the ship's piping system, and they are pipe fittings that run through watertight cabins, decks, tanks, etc. and can maintain their respective seals. The tank fittings are generally composed of inner pipes and connecting surfaces. On the one hand, the inner pipes are connected to the hull pipeline connecting surfaces through the connecting surfaces, and on the other hand, they are directly or indirectly connected to ship structures such as bulkheads. The connecting surfaces can be flanges, threads, etc. In other forms, the inner pipe and connecting surface must ensure that the system medium will not leak. Commonly used tank fittings include copper bushing fittings (CB 539-67) and steel fittings (CB / T ...

Claims

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