Chemical tanker anti-corrosion double-skin bulkhead structure
Patent Information
- Application Number
- CN202522114985.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-09-30
AI Technical Summary
1.介质复杂性：盐酸、液碱等强腐蚀性货物直接侵蚀碳钢舱壁，硫化物残留加速局部穿孔；
本实用新型中，在外舱壁本体中运输化学品物料时，贴合外舱壁本体内壁设置的玻璃鳞片胶泥防腐层中的玻璃鳞片可以在胶泥中呈层状平行排列，形成数十至数百层致密物理屏障，当腐蚀介质侵入时，必须沿鳞片间隙曲折绕行，渗透路径被延长，极大延缓介质接触外舱壁本体侧壁的速度从而在航行过程中提高对运输船舱壁的保护效果；而聚脲弹性耐磨层可以在聚硫橡胶层外表面高速固化形成无缝“皮肤”增强了撕裂强度，可以更好的抵抗货物装卸摩擦，预防货物摩擦对玻璃鳞片胶泥防腐层和聚硫橡胶层造成损伤；在另一方面聚硫橡胶层含大量硫醚键，对酸、碱类具有强耐受性，直接接触腐蚀介质不发生溶胀或降解，可以配合玻璃鳞片胶泥防腐层和聚硫橡胶层进一步提高对运输船的防腐蚀保护效果。
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Figure CN224857101U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of transport ship technology, specifically a corrosion-resistant double-layer bulkhead structure for chemical transport ships. Background Technology
[0002] Chemical transportation refers to the special logistics activities of safely transferring flammable, explosive, toxic or corrosive chemicals through a professional logistics system, while chemical transport ships are special vessels specifically designed to transport toxic, flammable, volatile or highly corrosive liquid chemicals.
[0003] Gas and liquid chemical transport vessels have long faced multiple corrosion threats. 1. Complexity of the medium: Highly corrosive cargoes such as hydrochloric acid and liquid alkali directly corrode carbon steel bulkheads, and sulfide residues accelerate local perforation; 2. Mechanical damage: The impact of cargo fluid and the friction during loading and unloading cause traditional coatings to peel off, forming corrosion initiation points.
[0004] 3. Structural defects: When a single-layer bulkhead leaks, pollutants can directly reach the hull, causing a catastrophic pollution incident.
[0005] Therefore, we propose a corrosion-resistant double-walled bulkhead structure for chemical transport ships. Utility Model Content
[0006] The purpose of this utility model is to provide a corrosion-resistant double-layer bulkhead structure for chemical transport ships in order to improve the corrosion protection effect of transport ships.
[0007] The technical solution adopted in this utility model is as follows: A corrosion-resistant double-layer bulkhead structure for a chemical transport ship includes an outer bulkhead body, an inner bulkhead mechanism installed on the lower inner side wall of the outer bulkhead body, a partition mechanism installed on the lower end of the opposite inner side wall of the inner bulkhead mechanism, and a collection mechanism fixedly connected to the inner bottom surface of the inner bulkhead mechanism. The inner bulkhead structure includes a glass flake putty anti-corrosion layer, which is disposed on the inner side wall of the outer bulkhead body. A polysulfide rubber layer is bonded to the side of the glass flake putty anti-corrosion layer away from the outer bulkhead body, and a polyurea elastic wear-resistant layer is sprayed onto the side of the polysulfide rubber layer away from the glass flake putty anti-corrosion layer.
[0008] Furthermore, the lower end of the inner bulkhead mechanism is provided with a groove relative to the inner sidewall.
[0009] Furthermore, the separating mechanism includes two sliding plates, the outer surface of which is slidably connected to the inner surface of the groove, and a fiberglass grating is fixedly connected between the two adjacent sides of the sliding plates.
[0010] Furthermore, the collection mechanism includes a collection trough, which is fixedly connected to the inner bottom surface of the inner bulkhead mechanism.
[0011] Furthermore, a drain pipe is installed on one side of the collection tank, a valve is installed on the outer surface of the drain pipe, and the internal cavity of the drain pipe is connected to the bottom section of the collection tank.
[0012] Furthermore, a deck rib is fixedly connected to the upper inner wall of the outer bulkhead body, and a deck is fixedly connected to the upper surface of the deck rib.
[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: In this invention, when transporting chemical materials within the outer bulkhead, the glass flakes in the glass flake putty anti-corrosion layer, which adheres to the inner wall of the outer bulkhead, can be arranged in parallel layers within the putty, forming dozens to hundreds of dense physical barriers. When corrosive media penetrate, they must meander and bypass along the gaps between the flakes, extending the penetration path and significantly slowing down the speed at which the media contacts the side wall of the outer bulkhead, thereby improving the protection effect on the bulkhead during navigation. Meanwhile, the polyurea elastic wear-resistant layer can be rapidly cured on the outer surface of the polysulfide rubber layer to form a seamless "skin," enhancing tear strength and better resisting cargo handling friction, preventing damage to the glass flake putty anti-corrosion layer and the polysulfide rubber layer from cargo friction. On the other hand, the polysulfide rubber layer contains a large number of sulfide bonds, exhibiting strong resistance to acids and alkalis, and does not swell or degrade upon direct contact with corrosive media. This, combined with the glass flake putty anti-corrosion layer and the polysulfide rubber layer, further enhances the anti-corrosion protection effect on the transport ship. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the inner bulkhead mechanism in this utility model; Figure 3 In this utility model Figure 1 Enlarged view of point A.
[0015] The markings in the diagram are: 1-outer bulkhead body, 2-inner bulkhead mechanism, 3-deck, 4-separation mechanism, 5-collection mechanism, 11-deck ribs, 21-glass flake putty anti-corrosion layer, 22-polysulfide rubber layer, 23-polyurea elastic wear-resistant layer, 24-slide groove, 41-slide plate, 42-fiberglass grating, 51-collection tank, 52-sewage pipe, 53-valve. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0017] Reference Figures 1-3 A corrosion-resistant double-layer bulkhead structure for a chemical transport ship includes an outer bulkhead body 1. A deck rib 11 is fixedly connected to the upper inner wall of the outer bulkhead body 1, and a deck 3 is fixedly connected to the upper surface of the deck rib 11. An inner bulkhead mechanism 2 is installed on the lower inner wall of the outer bulkhead body 1. A partition mechanism 4 is installed at the lower end of the opposite inner wall of the inner bulkhead mechanism 2, and a collection mechanism 5 is fixedly connected to the inner bottom surface of the inner bulkhead mechanism 2. The inner bulkhead mechanism 2 includes a glass flake putty anti-corrosion layer 21, which is disposed on the inner wall of the outer bulkhead body 1. A polysulfide rubber layer 22 is bonded to the side of the glass flake putty anti-corrosion layer 21 away from the outer bulkhead body 1, and a polyurea elastic wear-resistant layer 23 is sprayed onto the side of the polysulfide rubber layer 22 away from the glass flake putty anti-corrosion layer 21. Specifically, when transporting chemical materials, the materials can be placed on the upper surface of the partition mechanism 4, adhering to the outer bulkhead body 1 during transportation. The glass flakes in the glass flake putty anti-corrosion layer 21 on the inner wall can be arranged in parallel layers in the putty, forming dozens to hundreds of dense physical barriers. When corrosive media penetrate, they must meander around the gaps between the flakes, and the penetration path is extended, which greatly slows down the speed at which the media contacts the side wall of the outer bulkhead 1, thereby improving the protection effect on the bulkhead of the transport ship during navigation. Meanwhile, the polyurea elastic wear-resistant layer 23 can be cured at high speed on the outer surface of the polysulfide rubber layer 22 to form a seamless "skin" that enhances the tear strength and can better resist the friction of cargo loading and unloading, preventing damage to the glass flake putty anti-corrosion layer 21 and the polysulfide rubber layer 22 caused by cargo friction. On the other hand, the polysulfide rubber layer 22 contains a large number of sulfide bonds and has strong resistance to acids and alkalis. It does not swell or degrade when directly contacted with corrosive media, and can work with the glass flake putty anti-corrosion layer 21 and the polysulfide rubber layer 22 to further improve the anti-corrosion protection effect on the transport ship.
[0018] Reference Figures 1-3The lower end of the inner bulkhead mechanism 2 is provided with a groove 24 relative to the inner sidewall. The partition mechanism 4 includes two sliding plates 41, the outer surface of which is slidably connected to the inner surface of the groove 24. A fiberglass grating 42 is fixedly connected between the two sliding plates 41 on their adjacent sides. The collection mechanism 5 includes a collection tank 51, which is fixedly connected to the inner bottom surface of the inner bulkhead mechanism 2. A drain pipe 52 is installed on one side of the collection tank 51, and a valve 53 is installed on the outer surface of the drain pipe 52. The internal cavity of the drain pipe 52 is connected to the bottom section of the collection tank 51. Specifically, when the bulkhead of the transport ship is cleaned using the flushing equipment, the cleaning water can flow through the fiberglass grating 42 into the inside of the collection tank 51. Subsequently, the valve 53 can be opened to discharge the cleaning water from the drain pipe 52, thereby keeping the bulkhead of the transport ship clean and improving the corrosion resistance.
[0019] The implementation principle of an embodiment of a corrosion-resistant double-layer bulkhead structure for chemical transport ships in this application is as follows: When transporting chemical materials, the materials can be placed on the upper surface of the partition mechanism 4. During transportation, the glass flakes in the glass flake putty anti-corrosion layer 21, which is attached to the inner wall of the outer bulkhead 1, can be arranged in parallel layers in the putty, forming dozens to hundreds of dense physical barriers. When corrosive media penetrate, they must meander around the gaps between the flakes, and the penetration path is extended, which greatly slows down the speed at which the media contacts the side wall of the outer bulkhead 1, thereby improving the protection effect on the bulkhead of the transport ship during navigation. Meanwhile, the polyurea elastic wear-resistant layer 23 can be cured at high speed on the outer surface of the polysulfide rubber layer 22 to form a seamless "skin" that enhances tear strength and can better resist the friction of cargo loading and unloading, preventing damage to the glass flake putty anti-corrosion layer 21 and the polysulfide rubber layer 22 caused by cargo friction. On the other hand, the polysulfide rubber layer 22 contains a large number of sulfide bonds and has strong resistance to acids and alkalis. It does not swell or degrade when directly contacted with corrosive media, and can work with the glass flake putty anti-corrosion layer 21 and the polysulfide rubber layer 22 to further improve the anti-corrosion protection effect on the transport ship.
[0020] On the other hand, when the rinsing equipment is used to clean the bulkhead of the transport ship, the cleaning water can flow through the fiberglass grating 42 into the inside of the collection tank 51. Subsequently, the valve 53 can be opened to discharge the cleaning water from the drain pipe 52, thereby keeping the bulkhead of the transport ship clean and improving the corrosion resistance.
[0021] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A corrosion-resistant double-layer bulkhead structure for a chemical transport ship, comprising an outer bulkhead body (1), characterized in that: An inner bulkhead mechanism (2) is installed on the lower inner side wall of the outer bulkhead body (1), a separation mechanism (4) is installed on the lower end of the opposite inner side wall of the inner bulkhead mechanism (2), and a collection mechanism (5) is fixedly connected to the inner bottom surface of the inner bulkhead mechanism (2). The inner bulkhead structure (2) includes a glass flake putty anti-corrosion layer (21), which is disposed on the inner wall of the outer bulkhead body (1). A polysulfide rubber layer (22) is bonded to the side of the glass flake putty anti-corrosion layer (21) away from the outer bulkhead body (1), and a polyurea elastic wear-resistant layer (23) is sprayed on the side of the polysulfide rubber layer (22) away from the glass flake putty anti-corrosion layer (21).
2. The anti-corrosion double-layer bulkhead structure for chemical transport ships as described in claim 1, characterized in that: The lower end of the inner bulkhead mechanism (2) is provided with a groove (24) relative to the inner side wall.
3. The anti-corrosion double-layer bulkhead structure for chemical transport ships as described in claim 2, characterized in that: The separating mechanism (4) includes two sliding plates (41), the outer surface of the sliding plates (41) is slidably connected to the inner surface of the slide groove (24), and a fiberglass grating plate (42) is fixedly connected between the two sliding plates (41) on their adjacent sides.
4. The anti-corrosion double-layer bulkhead structure for chemical transport ships as described in claim 1, characterized in that: The collection mechanism (5) includes a collection tank (51), which is fixedly connected to the inner bottom surface of the inner bulkhead mechanism (2).
5. The anti-corrosion double-layer bulkhead structure for chemical transport ships as described in claim 4, characterized in that: A drain pipe (52) is installed on one side of the collection tank (51), and a valve (53) is installed on the outer surface of the drain pipe (52). The internal cavity of the drain pipe (52) is connected to the bottom section of the collection tank (51).
6. The anti-corrosion double-layer bulkhead structure for chemical transport ships as described in claim 1, characterized in that: The upper inner wall of the outer bulkhead body (1) is fixedly connected to a deck rib (11), and the upper surface of the deck rib (11) is fixedly connected to a deck (3).