Corrosion-resistant pipe for chemical tanker

By adopting a multi-layer structural design on the chemical ship pipeline, including corrosion-resistant layer, anti-permeability layer, etc., the problem of the pipeline being susceptible to corrosion during long-term use is solved, and the effect of extending service life and reducing maintenance costs is achieved.

CN222950574UActive Publication Date: 2025-06-06YANGZHOU LONGHE SHIPBUILDING CO LTD
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Patent Information

Application Number
CN202421678010.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-16
Publication Date
2025-06-06
Estimated Expiration
2034-07-16

AI Technical Summary

Technical Problem

Chemical boat pipes are susceptible to erosion when they come into contact with corrosive liquids for a long time, resulting in damage and increased maintenance costs.

Method used

A chemical ship corrosion-resistant pipe is designed, adopting a multi-layer structural design, including corrosion-resistant layer, anti-permeability layer, barrier layer, support layer, oxidation layer, wear-resistant layer and protective layer. Through the combination of these layers, the corrosion resistance and service life of the pipe are improved.

Benefits of technology

Effectively prevent chemical corrosion, extend the service life of the pipeline, reduce maintenance costs, and improve the sealing and wear resistance of the pipeline to avoid damage caused by external impact.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a chemical tanker corrosion-resistant pipe, which relates to the technical field of delivery pipes, and comprises a first fixing block and a delivery pipe, and the delivery pipe comprises a corrosion-resistant layer. During use, under the interaction of a series of components, the corrosion-resistant layer can protect the pipeline from being corroded by chemical substances and prolong the service life of the pipeline, and the anti-permeation layer can effectively prevent media in the pipeline from leaking outwards, so that the sealing performance of a pipeline system is kept, and the damage to the environment and equipment caused by the leakage of the media is prevented; the barrier layer can make chemicals or corrosive substances difficult to permeate into the pipeline and enhance the corrosion resistance of the pipeline, the anti-oxidation layer can prolong the service life of the pipeline and reduce the problems of pipeline degradation, corrosion and the like caused by oxidation, and the wear-resistant layer can resist wear and scratch and reduce direct contact between the surface of the pipeline and external objects, so that the service life of the pipeline is prolonged. Therefore, the risks of abrasion and scratching are reduced, and the service life of the pipeline is prolonged.
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Description

Technical Field

[0001] The utility model relates to the technical field of conveying pipes, in particular to a corrosion-resistant pipe for chemical ships. Background Art

[0002] The so-called chemical tanker should be defined as a liquid cargo ship, which is a cargo ship built or modified to carry various toxic, flammable, explosive or corrosive chemicals. Liquid chemical tankers mostly have double bottoms and double sides, and the cargo holds are divided and equipped with special cargo pumps and piping.

[0003] In the prior art, the pipeline structure of chemical tankers is simple and the functionality is poor, which leads to long-term contact with corrosive liquids during use. The conveying pipeline is easily corroded by the corrosive liquid and damaged. This not only seriously affects the use of the conveying pipeline, but also increases the consumption of the conveying pipeline, greatly increasing the maintenance cost. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the above equipment cannot effectively prevent the erosion of corrosive liquids when in use, resulting in serious pipeline damage during long-term use, and thus a corrosion-resistant pipe for chemical tankers is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a corrosion-resistant pipe of a chemical tanker, comprising a first fixed block and a delivery pipe, the delivery pipe comprising a corrosion-resistant layer, the outer wall of the corrosion-resistant layer is provided with an anti-permeation layer, the outer wall of the anti-permeation layer is provided with a barrier layer, the outer wall of the barrier layer is provided with a supporting layer, the outer wall of the supporting layer is provided with an anti-oxidation layer, the outer wall of the anti-oxidation layer is provided with a wear-resistant layer, and the outer wall of the wear-resistant layer is provided with a protective layer.

[0006] Preferably, the corrosion-resistant layer is made of polyurethane fiber, and the thickness of the corrosion-resistant layer is approximately between 2-10 mm, the anti-permeability layer is woven from polyvinyl chloride fiber, and the thickness of the anti-permeability layer is approximately between 0.5-2 mm, and the barrier layer is filled with chloroprene rubber, and the thickness of the barrier layer is between 3-10 mm.

[0007] Preferably, the support layer is made of carbon steel, and the thickness of the support layer is approximately between 6-14 mm, and the anti-oxidation layer is made of epoxy resin, and the thickness of the anti-oxidation layer is approximately between 3-17 mm.

[0008] Preferably, the wear-resistant layer is woven from polyethylene fibers or polyurethane fibers, and the thickness of the wear-resistant layer is between 8-17 mm, and the protective layer is filled with rubber particles, and the thickness of the protective layer is approximately between 12-20 mm.

[0009] Preferably, the outer wall of the first fixing block is movably sleeved with four fixing devices, and a second fixing block is arranged on the top of the first fixing block.

[0010] Preferably, the outer walls of the second fixing block and the first fixing block are both provided with a second sealing ring.

[0011] Preferably, the outer walls of the two second sealing rings are both provided with a first sealing ring, and a delivery pipe is provided between the outer walls of the two first sealing rings 3 .

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

[0013] 1. During use, the utility model can protect the pipeline from corrosion by chemical substances and extend its service life through the interaction of a series of components. The anti-corrosion layer can effectively prevent the medium in the pipeline from leaking outward, maintain the sealing of the pipeline system, and prevent the medium leakage from causing harm to the environment and equipment. The barrier layer can make it difficult for chemicals or corrosive substances to penetrate into the interior of the pipeline, thereby enhancing the corrosion resistance of the pipeline. The supporting layer can improve the strength of the pipeline during use and avoid damage. The anti-oxidation layer can extend the service life of the pipeline and reduce pipeline degradation, corrosion and other problems caused by oxidation. The wear-resistant layer can resist wear and scratches, reduce direct contact between the pipeline surface and external objects, thereby reducing the risk of wear and scratches and extending the service life of the pipeline. The protective layer can effectively prevent the pipeline from being damaged due to external impact during use and extend its service life.

[0014] 2. During use, the utility model interacts with a series of components. When the corrosion-resistant pipe needs to be installed and connected, the delivery pipe is first moved to a suitable position under the operation of the staff, and the delivery pipe can be connected and fixed under the action of the first fixing block, the second fixing block and the fixing device. At the same time, under the action of the first sealing ring and the second sealing ring, the liquid inside the corrosion-resistant pipe can be effectively prevented from leaking when it is in use, thereby greatly improving the installation and connection efficiency of the corrosion-resistant pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a main structural stereogram of a corrosion-resistant pipe in a chemical tanker;

[0016] Figure 2 The utility model proposes a main structural split diagram of a corrosion-resistant pipe in a chemical tanker;

[0017] Figure 3 A partial structural layered diagram of a corrosion-resistant pipe in a chemical tanker is proposed for the utility model;

[0018] Figure 4 The utility model provides a partial structural layered cross-sectional view of a corrosion-resistant pipe of a chemical tanker.

[0019] Legend:

[0020] 1. First fixing block; 2. Fixing device; 3. First sealing ring; 4. Second sealing ring; 5. Second fixing block; 6. Delivery pipe; 7. Corrosion-resistant layer; 8. Anti-penetration layer; 9. Barrier layer; 10. Support layer; 11. Anti-oxidation layer; 12. Wear-resistant layer; 13. Protective layer. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Embodiment 1, as Figure 1-Figure 4 As shown, the utility model provides a corrosion-resistant pipe for a chemical tanker, comprising a first fixing block 1 and a conveying pipe 6, wherein the conveying pipe 6 comprises a corrosion-resistant layer 7, an outer wall of the corrosion-resistant layer 7 is provided with an anti-permeation layer 8, an outer wall of the anti-permeation layer 8 is provided with a barrier layer 9, an outer wall of the barrier layer 9 is provided with a support layer 10, an outer wall of the support layer 10 is provided with an anti-oxidation layer 11, an outer wall of the anti-oxidation layer 11 is provided with a wear-resistant layer 12, an outer wall of the wear-resistant layer 12 is provided with a protective layer 13, the corrosion-resistant layer 7 is made of polyurethane fiber, and the thickness of the corrosion-resistant layer 7 is about 2-10 mm, and the anti-permeation layer 8 is woven from polyvinyl chloride fiber. The anti-permeation layer 8 has a thickness of about 0.5-2 mm, the barrier layer 9 is filled with chloroprene rubber, and the thickness of the barrier layer 9 is between 3-10 mm, the support layer 10 is made of carbon steel, and the thickness of the support layer 10 is about 6-14 mm, the anti-oxidation layer 11 is made of epoxy resin, and the thickness of the anti-oxidation layer 11 is about 3-17 mm, the wear-resistant layer 12 is woven from polyethylene fiber or polyurethane fiber, and the thickness of the wear-resistant layer 12 is between 8-17 mm, and the protective layer 13 is filled with rubber particles, and the thickness of the protective layer 13 is about 12-20 mm.

[0024] The effects achieved by the entire embodiment 1 are as follows: the corrosion-resistant layer 7 can protect the pipeline from corrosion by chemical substances and extend its service life; the anti-permeation layer 8 can effectively prevent the medium in the pipeline from leaking outward, maintain the sealing of the pipeline system, and prevent medium leakage from causing harm to the environment and equipment; the barrier layer 9 can make it difficult for chemicals or corrosive substances to penetrate into the interior of the pipeline, thereby enhancing the corrosion resistance of the pipeline; the support layer 10 can increase the strength of the pipeline during use to avoid damage; the antioxidant layer 11 can extend the service life of the pipeline and reduce problems such as pipeline degradation and corrosion caused by oxidation; the wear-resistant layer 12 can resist wear and scratches, reduce direct contact between the pipeline surface and external objects, thereby reducing the risk of wear and scratches and extending the service life of the pipeline; the protective layer 13 can effectively prevent the pipeline from being damaged due to external impact during use, thereby extending its service life.

[0025] Embodiment 2, as Figure 2-Figure 4 As shown, the outer wall of the first fixed block 1 is movablely sleeved with four fixing devices 2, a second fixed block 5 is arranged on the top of the first fixed block 1, the outer walls of the second fixed block 5 and the first fixed block 1 are both provided with second sealing rings 4, the outer walls of the two second sealing rings 4 are both provided with first sealing rings 3, and a conveying pipe 6 is arranged between the outer walls of the two first sealing rings 3.

[0026] The effect achieved by the entire embodiment 2 is that when the corrosion-resistant pipe needs to be installed and connected, the two pipes are first moved to a suitable position and their output ends and input ends are aligned, and then the first fixing block 1 and the second fixing block 5 are sleeved onto the connection of the corrosion-resistant pipe, and then the nut on the outer wall of the fixing device 2 is rotated to clamp the first fixing block 1 and the second fixing block 5 through the nut, thereby completing the installation and connection of the corrosion-resistant pipe, and under the action of the first sealing ring 3 and the second sealing ring 4, the sealing performance of the corrosion-resistant pipe during use can be improved to avoid leakage of chemicals inside it.

[0027] Working principle: During use, when it is necessary to install and connect the corrosion-resistant pipe of the chemical tanker, first move the two pipes to the appropriate position and align their output and input ends, then put the first fixing block 1 and the second fixing block 5 on the connection of the corrosion-resistant pipe, and then rotate the nut on the outer wall of the fixing device 2 to clamp the first fixing block 1 and the second fixing block 5 through the nut, thereby completing the installation and connection of the corrosion-resistant pipe, and under the action of the first sealing ring 3 and the second sealing ring 4, the leakage of chemicals inside can be avoided. The corrosion-resistant pipe is composed of corrosion-resistant layer 7-anti-permeation layer 8-barrier layer 9-support layer 10-anti-oxidation layer 11-wear-resistant layer 12-protective layer 13 from the innermost layer to the outermost layer. The corrosion-resistant layer 7 is made of polyurethane fiber to protect the pipe from corrosion by chemical substances and prolong its service life. The anti-permeation layer 8 is woven from polyvinyl chloride fiber and can have The invention can effectively prevent the medium in the pipeline from leaking outward, maintain the sealing of the pipeline system, and prevent the medium leakage from causing harm to the environment and equipment. The barrier layer 9 is filled with chloroprene rubber, which can make it difficult for chemicals or corrosive substances to penetrate into the interior of the pipeline, thereby enhancing the corrosion resistance of the pipeline. The support layer 10 is made of carbon steel, which can improve the strength of the pipeline during use and avoid damage. The antioxidant layer 11 is made of epoxy resin, which can extend the service life of the pipeline and reduce pipeline degradation and corrosion caused by oxidation. The wear-resistant layer 12 is woven from polyethylene fiber or polyurethane fiber to resist wear and scratches, reduce the direct contact between the pipeline surface and external objects, thereby reducing the risk of wear and scratches and improving the service life of the pipeline. The protective layer 13 is filled with rubber particles and can effectively prevent the pipeline from being damaged due to external impact during use, thereby extending its service life.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A corrosion-resistant pipe for a chemical tanker, characterized in that: The invention comprises a first fixing block (1) and a conveying pipe (6), wherein the conveying pipe (6) comprises a corrosion-resistant layer (7), an outer wall of the corrosion-resistant layer (7) is provided with an anti-permeation layer (8), an outer wall of the anti-permeation layer (8) is provided with a barrier layer (9), an outer wall of the barrier layer (9) is provided with a support layer (10), an outer wall of the support layer (10) is provided with an anti-oxidation layer (11), an outer wall of the anti-oxidation layer (11) is provided with a wear-resistant layer (12), and an outer wall of the wear-resistant layer (12) is provided with a protective layer (13).

2. A corrosion-resistant pipe for a chemical tanker according to claim 1, characterized in that: The corrosion-resistant layer (7) is made of polyurethane fibers, and the thickness of the corrosion-resistant layer (7) is approximately between 2 and 10 mm. The anti-permeability layer (8) is woven from polyvinyl chloride fibers, and the thickness of the anti-permeability layer (8) is approximately between 0.5 and 2 mm. The barrier layer (9) is filled with chloroprene rubber, and the thickness of the barrier layer (9) is between 3 and 10 mm.

3. A corrosion-resistant pipe for a chemical tanker according to claim 2, characterized in that: The support layer (10) is made of carbon steel, and the thickness of the support layer (10) is approximately between 6 and 14 mm. The anti-oxidation layer (11) is made of epoxy resin, and the thickness of the anti-oxidation layer (11) is approximately between 3 and 17 mm.

4. A corrosion-resistant pipe for a chemical tanker according to claim 3, characterized in that: The wear-resistant layer (12) is woven from polyethylene fibers or polyurethane fibers, and the thickness of the wear-resistant layer (12) is between 8 and 17 mm. The protective layer (13) is filled with rubber particles, and the thickness of the protective layer (13) is approximately between 12 and 20 mm.

5. The corrosion-resistant pipe for a chemical tanker according to claim 4, characterized in that: The outer wall of the first fixing block (1) is movably sleeved with four fixing devices (2), and a second fixing block (5) is arranged on the top of the first fixing block (1).

6. The corrosion-resistant pipe for a chemical tanker according to claim 5, characterized in that: The outer walls of the second fixing block (5) and the first fixing block (1) are both provided with a second sealing ring (4).

7. The corrosion-resistant pipe for a chemical tanker according to claim 6, characterized in that: The outer walls of the two second sealing rings (4) are both provided with first sealing rings (3), and a delivery pipe (6) is provided between the outer walls of the two first sealing rings (3).