Seawater pipeline anti-corrosion device for ship

Abstract

The utility model relates to a marine seawater pipeline anti-corrosion device which comprises a blind plate flange, the blind plate flange is connected with a sacrificial anode through a screw, the sacrificial anode is arranged on the screw in a sleeved mode and fixed through a fixing piece, the blind plate flange is further connected with a short pipe flange, and a stainless steel net is arranged at the end, away from the blind plate flange, of the short pipe flange. The side, away from the short pipe flange, of the stainless steel net is connected with a seawater pipeline, and the seawater pipeline is perpendicular to the sacrificial anode in the length direction and located below the sacrificial anode. The marine seawater pipeline anti-corrosion device effectively solves the problem that the sacrificial anode possibly falls off to damage equipment or cause blockage of the pipeline after resistance and corrosion of the sacrificial anode to fluid.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship pipeline systems, and in particular relates to a ship seawater pipeline anti-corrosion device. Background Art

[0002] The role of seawater pipelines in ships is extremely important. The seawater pipeline system is an important part of the power system, power system and auxiliary support system. However, the medium of the seawater pipeline system is seawater, which is highly corrosive and prone to electrochemical corrosion. Once the seawater pipeline is corroded and leaks, it will seriously affect the normal operation of the ship's related equipment and even seriously affect the safety of the ship.

[0003] In order to extend the service life and safety and reliability of marine seawater pipelines, the seawater pipeline system needs to be equipped with many pipeline sacrificial anodes. In addition to taking anti-corrosion measures in the seabed valve box or the seawater main line filter, the pipelines of some seawater coolers also need to take additional anti-corrosion measures. Generally, there are two methods: (1) adding anti-corrosion flanges at the inlet and outlet of the seawater cooler. This method requires draining the seawater in the cooler and part of the seawater pipeline during replacement, which is time-consuming and labor-intensive; (2) installing a welding wire holder on the seawater pipeline, and installing the sacrificial anode on the wire holder. The anode extends into the seawater pipeline. This method has safety hazards: not only may the anode fall off after corrosion and flow into the cooler with the seawater, causing blockage and damage, but the anode also extends into the seawater pipeline for installation, which will also produce a certain amount of resistance. Summary of the invention

[0004] The utility model aims to provide a marine seawater pipeline anti-corrosion device, which effectively solves the problems of resistance of sacrificial anode to fluid and possible drop after corrosion to damage equipment or cause pipeline blockage.

[0005] The utility model adopts the following technical solution to solve the above problems: a marine seawater pipeline anti-corrosion device, comprising a blind flange, wherein the blind flange is connected to a sacrificial anode via a screw, and the blind flange is also connected to a short pipe flange, and a stainless steel mesh is provided at one end of the short pipe flange away from the blind flange, and the stainless steel mesh is connected to a seawater pipeline at a side away from the short pipe flange.

[0006] Preferably, the blind plate flange is connected to the short pipe flange via fastening bolts.

[0007] Preferably, a mounting hole is provided in the middle of the blind flange, and the screw passes through the mounting hole to connect the blind flange.

[0008] Preferably, the stainless steel mesh is provided with evenly distributed filter holes, and the diameter of the filter holes is 5 mm.

[0009] Preferably, the sacrificial anode is sleeved on the screw rod and fixed by a fixing piece, and both ends of the sacrificial anode are fixed with fixing pieces, and the fixing pieces are nuts.

[0010] Preferably, the sacrificial anode is a zinc alloy sacrificial anode.

[0011] Preferably, the sacrificial anode is perpendicular to the length direction of the seawater pipeline and is located above the seawater pipeline.

[0012] Compared with the prior art, the advantages of the utility model are:

[0013] (1) In the marine seawater pipeline anti-corrosion device of the utility model, a stainless steel mesh is provided at one end of the short pipe flange away from the blind plate flange, and the stainless steel mesh is connected to the seawater pipeline at the side away from the short pipe flange. Such an arrangement can not only prevent the sacrificial anode from falling off after corrosion and entering the equipment with the flow of seawater to cause blockage and damage, but also ensure the smooth flow of seawater.

[0014] (2) In the marine seawater pipeline anti-corrosion device of the utility model, the blind flange is connected to the sacrificial anode via a screw rod, the sacrificial anode is sleeved on the screw rod and fixed by a fixing nut, and the sacrificial anode is perpendicular to the length direction of the seawater pipeline and is located above the seawater pipeline. With such an arrangement, not only does it only require disassembling and installing the fixing nut when replacing, but it is not necessary to release the seawater in the seawater pipeline, the operation is simple and convenient, and the resistance of the sacrificial anode to the fluid in the seawater pipeline is effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a marine seawater pipeline anti-corrosion device in an embodiment of the utility model.

[0016] Among them: 1 is a blind flange, 2 is a screw, 3 is a sacrificial anode, 4 is a short pipe flange, 5 is a stainless steel mesh, and 6 is a seawater pipeline. Implementation

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0018] like Figure 1 As shown, it is a schematic structural diagram of the marine seawater pipeline anti-corrosion device in this embodiment.

[0019] A marine seawater pipeline anti-corrosion device comprises a blind flange 1, wherein the blind flange 1 is connected to a sacrificial anode 3 via a screw 2, wherein the blind flange 1 is connected to a short pipe flange 4 via a fastening bolt.

[0020] The blind flange 1 is also connected to the short pipe flange 4 . A mounting hole is provided in the middle of the blind flange 1 . The screw 2 passes through the mounting hole and is connected to the blind flange 1 .

[0021] A stainless steel mesh 5 is provided at one end of the short pipe flange 4 away from the blind flange 1, and the side of the stainless steel mesh 5 away from the short pipe flange 4 is connected to a seawater pipeline 6; the stainless steel mesh 5 is installed below the sacrificial anode 3, and is provided with evenly distributed filter holes in the stainless steel mesh 5, and the diameter of the filter holes is 5 mm, which not only prevents the sacrificial anode 3 from falling off after corrosion and entering the equipment with the flow of seawater to cause blockage and damage, but also ensures the smooth flow of seawater.

[0022] The sacrificial anode 3 is perpendicular to the length direction of the seawater pipeline 6 and is located above the seawater pipeline 6. This arrangement prevents the sacrificial anode 3 from generating a certain resistance to the water flow in the seawater pipeline 6, thereby affecting the flow rate of seawater.

[0023] The sacrificial anode 3 is sleeved on the screw 2 and fixed by a fixing member 7. The screw 2 extends along the length direction of the sacrificial anode 3. Both ends of the sacrificial anode 3 are fixed with fixing members 7, and the fixing members 7 are nuts. The seawater pipeline anti-corrosion device effectively protects the seawater pipeline and related valves in the pipeline through the sacrificial anode 3, and the sacrificial anode 3 is easy to replace after being corroded. It only needs to remove the fixing member 7 nuts at both ends of the corroded sacrificial anode 3, replace it with a new sacrificial anode 3, and tighten the fixing member 7 nuts.

[0024] The sacrificial anode 3 is a zinc alloy sacrificial anode. The metal material selected for the sacrificial anode 3 is more active than the metal material of the external seawater pipeline 6. Therefore, the sacrificial anode is corroded first, and the external seawater pipeline 6 is protected.

[0025] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A marine seawater pipeline anti-corrosion device, characterized in that: The invention comprises a blind flange (1), wherein the blind flange (1) is connected to a sacrificial anode (3) via a screw (2), the sacrificial anode (3) is sleeved on the screw (2) and fixed via a fixing member (7), the blind flange (1) is also connected to a short pipe flange (4), a stainless steel mesh (5) is provided at one end of the short pipe flange (4) away from the blind flange (1), the stainless steel mesh (5) is connected to a seawater pipeline (6) at one side away from the short pipe flange (4), and the seawater pipeline (6) is perpendicular to the sacrificial anode (3) in length and is located below the sacrificial anode (3).

2. The marine seawater pipeline anti-corrosion device according to claim 1, characterized in that: The blind plate flange (1) is connected to the short pipe flange (4) via fastening bolts.

3. The marine seawater pipeline anti-corrosion device according to claim 1, characterized in that: A mounting hole is provided in the middle of the blind flange (1), and the screw (2) passes through the mounting hole to connect to the blind flange (1).

4. The marine seawater pipeline anti-corrosion device according to claim 1, characterized in that: The sacrificial anode (3) is a zinc alloy sacrificial anode.

5. The marine seawater pipeline anti-corrosion device according to claim 1, characterized in that: Both ends of the sacrificial anode (3) are fixed with fixing members (7), and the fixing members (7) are nuts.

6. The marine seawater pipeline anti-corrosion device according to claim 1, characterized in that: The stainless steel mesh (5) is provided with evenly distributed filter holes, and the diameter of the filter holes is 5 mm.

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