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Sacrifice flange for sea water system

A technology of sacrificing flanges and seawater systems, applied in the direction of flange connections, pipes/pipe joints/fittings, passing components, etc., can solve the problems of waste of materials, corrosion, and the same thickness of pipe walls, etc., to facilitate installation and replacement, increase The effect of service life

Active Publication Date: 2015-12-09
SHANGHAI WAIGAOQIAO SHIPBUILDING & OFFSHORE ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in terms of sacrificial anode protection in seawater systems, it is more commonly used to use sacrificial short tubes, that is, to install a short section of tubes without any surface treatment at the position where the pipelines are connected to equipment, and use this tubes as anodes to protect pipelines and equipment, but the sacrificial short pipe has the following problems: the thickness of the pipe wall is the same, it is difficult to detect the leak point of the pipe, that is, the leak point is uncontrollable; and the pipe wall is relatively thin, and the leak will be corroded in a short time point, need frequent replacement, waste of material

Method used

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  • Sacrifice flange for sea water system
  • Sacrifice flange for sea water system
  • Sacrifice flange for sea water system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Figure 1-2 Shown is a sacrificial flange for seawater systems, the sacrificial flange includes a hollow cylindrical flange body 1, a number of bolt holes 12 are evenly distributed on the end surface of the flange body 1, and the outer wall surface of the flange body 1 An opening 13 is provided in the radial direction. Preferably, the opening 13 is disposed between two adjacent bolt holes 12 . A groove 14 is provided on the edge of the end face of the flange body 1, and the groove 14 is used for placing a sealing ring.

[0020] When the sacrificial flange is used as a sacrificial anode to protect the seawater system, the sacrificial flange is first installed between the equipment and the pipeline, and a sealing ring is provided between the sacrificial flange, the equipment and the pipeline. After installation, the external wires on the sacrificial flange are connected to the hull, and the wires can be welded on the sacrificial flange, or in other ways, so as to form a...

Embodiment 2

[0023] Embodiment 2 is basically the same as Embodiment 1, as image 3 As shown, the difference is that the sacrificial flange also includes a screw 15 , a part of the screw 15 is embedded in the hole 13 , and the other part is exposed on the outer wall of the flange body 1 . The method of directly welding the wires on the sacrificial flange is inconvenient for installation and replacement of the sacrificial flange, so in this embodiment, a screw 15 is set in the opening 13, and the wire can be directly wrapped around the screw 15, which facilitates the sacrificial flange. Flange installation and replacement. Threads matching the screws 15 can be provided in the wall of the opening to fix the screws 15 on the sacrificial flange.

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Abstract

The invention discloses a sacrifice flange for a sea water system, which comprises a hollow cylindrical flange body, wherein the end surface of the flange body is uniformly distributed with a plurality of bolt holes; and the outer wall surface of the flange body is provided with an open hole in the radial direction. The sacrifice flange has controllable leakage points. The thickness of the thinnest wall of the sacrifice flange is greater than the wall thickness of the sacrifice stub pipe in the prior art; and thus, the sacrifice flange has longer service life, and is convenient for installation and replacement.

Description

technical field [0001] The invention relates to a sacrificial flange for a seawater system. Background technique [0002] During the operation of the ship, most of the heat generated by the equipment is taken away by the seawater through heat exchange. The seawater system, as the main body of the ship’s heat exchange, is always in operation, but the seawater is highly corrosive, so seawater pipelines and piping The equipment connected to the road has become the hardest hit area of ​​corrosion. According to the summary of the quality assurance sheet of the pipeline system after the delivery of the ship, most of them are corrosion of the pipeline. At the same time, there are traces of corrosion on some equipment interfaces. Advanced measures such as paint and internal plastic coating to treat the inner surface of the pipeline still cannot prevent seawater from corroding the pipeline and equipment. In this case, the use of sacrificial anodes to protect the seawater system has ...

Claims

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Application Information

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IPC IPC(8): F16L23/00F16L23/16
CPCF16L23/003F16L23/167
Inventor 韩佩宋伟吴智兵王抗
Owner SHANGHAI WAIGAOQIAO SHIPBUILDING & OFFSHORE ENG