Cable transition device for laying cable between trunk and superstructure of oil tanker

Abstract

The utility model relates to the technical field of ship electrical equipment, in particular to a cable transition device used for laying a cable between an oil tanker trunk and a superstructure. Box bodies with upper and lower openings are oppositely arranged on the trunk platform and the superstructure platform and located above the cable drum, sealing covers are detachably arranged on the tops of the box bodies, a closed guide structure is arranged between the two box bodies, supporting modules are arranged in the box bodies, and drainage mechanisms are arranged on the side faces of the bottoms of the box bodies. Through the arrangement of the closed box body structure and the guide structure, the problem of cable exposure caused by insufficient sealing performance of a traditional cable bracket is effectively solved, the protection grade of a cable channel is remarkably improved through the matching structure of the box body and the sealing cover, and the cable is prevented from being corroded by seawater and mechanically damaged; the supporting module realizes smooth transition of the cable, and avoids cable bending stress concentration caused by a traditional welding bracket; the drainage mechanism solves the problem of corrosion caused by accumulated water in the closed space.

Description

Technical Field

[0001] This utility model relates to the field of marine electrical equipment technology, specifically a cable transition device for laying cables between the cofferdam and the superstructure of an oil tanker. Background Technology

[0002] During the construction of oil tankers, the cable laying between the cofferdam and the superstructure is a crucial component of the ship's electrical system. Because ships spend long periods at sea, cables must withstand harsh environments such as wind, waves, salt spray, and rain; therefore, protective measures are essential. In practice, the cofferdam platform and the superstructure platform are typically designed at the same height to facilitate a smooth transition of the cables and reduce bending stress. Traditional cable laying methods usually involve welding angle steel cable trays between the cofferdam platform and the superstructure platform, then covering them with steel plate protective covers, such as… Figure 1 As shown, however, this structure has a problem with insufficient sealing, resulting in some cables being exposed and susceptible to corrosion and mechanical damage. Utility Model Content

[0003] The present invention aims to solve the above-mentioned problems, thereby providing a cable transition device for laying cables between oil tanker cofferdams and superstructures that avoids cable exposure.

[0004] The technical solution adopted by this utility model to solve the aforementioned problem is:

[0005] A cable transition device for laying cables between an oil tanker cofferdam and a superstructure includes a cable drum installed on the cofferdam platform and the superstructure platform, and two boxes with open tops and bottoms respectively installed on the cofferdam platform and the superstructure platform above the cable drum. The top of the boxes is detachably equipped with a sealing cover, a sealed guide structure is provided between the two boxes, a support module is provided inside the boxes, and a drainage mechanism is provided on the bottom side of the boxes.

[0006] Compared with the prior art, the outstanding features of this utility model, which adopts the above technical solution, are:

[0007] By setting up a sealed enclosure structure and a guide structure, the problem of cable exposure caused by insufficient sealing of traditional cable trays is effectively solved. The matching structure of the enclosure and the sealing cover significantly improves the protection level of the cable channel, protecting the cable from seawater erosion and mechanical damage. The support module realizes a smooth transition of the cable, avoiding the cable bending stress concentration caused by traditional welded trays. The drainage mechanism solves the problem of water accumulation and corrosion in the enclosed space.

[0008] As a preferred embodiment, a further technical solution of this utility model is:

[0009] Furthermore, the guiding structure includes vertically mounted connecting pipes on the housing, with transition cable conduits connecting between them. The continuous channel structure formed by the connecting pipes and transition cable conduits provides a sealed transition space for the cable, helping to reduce the impact of the external environment on the cable. This structural design can reduce the risk of cable exposure while maintaining the continuity of the cable laying path.

[0010] Furthermore, a cable fixing module is installed at the inner end of the connector.

[0011] Furthermore, the cable fixing module includes a support plate fixed to the lower part of the inner cavity of the connector. The length direction of the support plate is perpendicular to the axis of the connector. The two sides of the support plate are bent downward to form an anti-abrasion curved surface. Several fixing holes are spaced apart along the length direction of the support plate. The anti-abrasion curved surface design of the support plate can form a smooth transition when fixing the cable, which helps to reduce the wear of the cable sheath. The spaced fixing hole design makes it easy to adjust the fixing position according to the cable specifications, improving the adaptability of the device to cables of different diameters.

[0012] Furthermore, the support module includes a roller disposed between the cable drum and the guide structure. The roller axis is perpendicular to the cable axis. U-shaped brackets are respectively provided on both sides of the inner wall of the box. The two ends of the roller are rotatably connected in the brackets. A rollable plastic sleeve is slidably fitted on the outside of the roller. The combination structure of the roller and the plastic sleeve can provide rolling support during cable laying. By replacing sliding friction with rolling contact, the traction force required during cable laying can be reduced. The symmetrical arrangement of the U-shaped brackets makes the roller bear force evenly, which is beneficial to extending the service life of rotating parts.

[0013] Furthermore, the drainage mechanism includes a drain hole located on the bottom side wall of the tank. A drain plug is threaded into the drain hole. The drain plug is kept tight during normal operation and is unscrewed during maintenance to drain accumulated water. The mating structure of the drain hole and the drain plug can provide a discharge channel for any liquids that may enter while ensuring the airtightness of the tank.

[0014] Furthermore, a fixing seat is provided at the bottom of the side wall of the enclosure, and an anti-detachment chain is provided between the fixing seat and the outer end of the vent plug. The anti-detachment chain connection design helps to prevent the plug from being lost and facilitates maintenance operations.

[0015] Furthermore, a horizontal connecting surface is provided on the outer periphery of the top of the box. The vertical section of the angle steel is welded to the top of the box around the perimeter, and the horizontal section of the angle steel forms the connecting surface. A rubber gasket is provided between the sealing cover and the connecting surface, and connecting bolts are evenly distributed between the sealing cover and the connecting surface. The connecting surface structure with rubber gasket helps to improve the sealing effect through elastic compression, and the evenly distributed arrangement of connecting bolts helps to maintain a uniform distribution of sealing pressure.

[0016] Furthermore, a handrail is provided on the top of the sealing cover, which facilitates the operation of the sealing cover and makes it easy to disassemble and assemble during daily maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an existing solution in the background art;

[0018] Figure 2 This is a schematic diagram of the main structure of the present invention on the deck;

[0019] Figure 3 This is a schematic diagram of the main structure of the box in an embodiment of this utility model;

[0020] Figure 4 This is a three-dimensional cross-sectional structural diagram of the box body in an embodiment of the present utility model;

[0021] Figure 5 This is a schematic diagram of the front view structure of the tray in an embodiment of this utility model;

[0022] Figure 6 This is a top view of the tray structure in an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the support module in an embodiment of the present invention;

[0024] The following are marked in the diagram: 1. Well platform; 2. Superstructure platform; 3. Box; 4. Sealing cover; 5. Connecting pipe; 6. Transition cable pipe; 7. Support plate; 8. Roller; 9. Seat; 10. Drain plug; 11. Cable drum; 12. Plastic sleeve. Detailed Implementation

[0025] The present invention will be further described below with reference to embodiments, the purpose of which is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0026] A cable transition device for laying cables between an oil tanker cofferdam and a superstructure includes a cable drum 11 installed on a cofferdam platform 1 and a superstructure platform 2. A box 3 with open top and bottom is installed on the cofferdam platform 1 and the superstructure platform 2, positioned above the cable drum 11 and facing each other. The bottom of the box 3 is welded to the platform. The box 3 is fully welded and deburred, and is galvanized or dipped in zinc. A sealing cover 4 is detachably installed on the top of the box 3. A sealed guide structure is provided between the two boxes 3. A support module is installed inside the box 3. A drainage mechanism is provided on the bottom side of the box 3.

[0027] Furthermore, the guiding structure includes a vertically mounted connecting pipe 5 on the housing 3, which is horizontally positioned. The inner end of the connecting pipe 5 extends 20mm into the housing 3 for easy welding. The inner end of the connecting pipe 5 is chamfered and ground to prevent cable abrasion. The connecting pipe 5 connects to the interior of the housing 3 and is welded to the housing 3 for fixation. A transition cable conduit 6 connects the connecting pipes 5, and the connecting pipes 5 and the transition cable conduit 6 are connected by flanges. The continuous channel structure formed by the connecting pipes 5 and the transition cable conduit 6 provides a sealed transition space for the cable, helping to reduce the impact of the external environment on the cable. This structural design can reduce the risk of cable exposure while maintaining the continuity of the cable laying path.

[0028] Furthermore, a cable fixing module is installed at the inner end of connector 5.

[0029] Furthermore, the cable fixing module includes a support plate 7 fixed to the lower part of the inner cavity of the connector 5. The support plate 7 is located at the inner end of the connector 5, and its length is 0.7 times the diameter of the connector 5. The length direction of the support plate 7 is perpendicular to the axis of the connector 5. The two sides of the support plate 7 are bent downward to form abrasion-resistant curved surface. After the two sides of the support plate 7 are bent, the angle between them and the bottom surface of the middle part of the support plate 7 is 120°. Several fixing holes are spaced apart along the length direction on the support plate 7. The cable is bound through different fixing holes. The abrasion-resistant curved surface design of the support plate 7 can form a smooth transition when fixing the cable, which helps to reduce the wear of the cable sheath. The spaced fixing hole design makes it easy to adjust the fixing position according to the cable specifications, improving the adaptability of the device to cables of different diameters.

[0030] Furthermore, the support module includes a roller 8 disposed between the cable cylinder 11 and the guide structure. The axis of the roller 8 is perpendicular to the cable axis. U-shaped brackets 9 are respectively disposed on both sides of the inner wall of the housing 3. The two ends of the roller 8 are rotatably connected in the brackets 9. A connecting rod is disposed between the top openings of the brackets 9 to prevent the roller 8 from disengaging from the brackets 9. A rollable plastic sleeve 12 is slidably fitted on the outside of the roller 8. The height difference between the upper edge of the plastic sleeve 12 and the upper surface of the support plate 7 is 50mm. The plastic sleeve 12 is made of ultra-high molecular weight polyethylene material with a Shore hardness of D65-D75 and a wall thickness of 5±0.2mm. It has excellent wear resistance and self-lubricating properties. The combined structure of the roller 8 and the plastic sleeve 12 can provide rolling support during cable laying. By replacing sliding friction with rolling contact, the traction force required during cable laying can be reduced. The symmetrical arrangement of the U-shaped brackets 9 makes the roller 8 bear force evenly, which is beneficial to extending the service life of rotating parts.

[0031] Furthermore, the drainage mechanism includes a drain hole located on the bottom side wall of the housing 3. A drain plug 10 is threaded into the drain hole. The drain plug 10 is kept tight during normal operation and is unscrewed to drain accumulated water during maintenance. The matching structure of the drain hole and the drain plug 10 can provide a discharge channel for liquids that may enter while ensuring the airtightness of the housing 3.

[0032] Furthermore, a fixing seat is provided at the bottom of the side wall of the housing 3, and an anti-detachment chain is provided between the fixing seat and the outer end of the vent plug 10. The anti-detachment chain connection design helps to prevent the vent plug 10 from being lost and facilitates maintenance operations.

[0033] Furthermore, a horizontal connecting surface is provided on the outer periphery of the top of the housing 3, a rubber gasket is provided between the sealing cover 4 and the connecting surface, and connecting bolts are evenly distributed between the sealing cover 4 and the connecting surface. The connecting surface structure with rubber gasket helps to improve the sealing effect through elastic compression, and the evenly distributed arrangement of connecting bolts helps to maintain a uniform distribution of sealing pressure.

[0034] Furthermore, a handrail is provided on the top of the sealing cover 4, which facilitates the operation of the sealing cover 4 and makes it easy to disassemble and install during daily maintenance.

[0035] When laying cables between the oil tanker's cofferdam platform and the superstructure platform, the cables first emerge from the cable reel on the cofferdam platform and enter the enclosure. There, the plastic sheath of the support module provides rolling support, replacing the sliding friction of traditional brackets through rolling contact, thus reducing cable traction resistance. The cable continues through the sealed channel structure formed by the connecting pipe and the transition cable conduit. This continuous channel effectively solves the cable exposure problem caused by insufficient sealing of traditional angle steel brackets, ensuring the cable remains protected throughout its journey. When passing through the connecting pipe, the anti-abrasion curved plate of the cable fixing module positions and fixes the cable. Different fixing holes are used to accommodate different cable diameters, avoiding cable sheath wear caused by traditional fixing methods. When water accumulates inside the device due to sealing failure or condensation, the drain plug of the drainage mechanism can be unscrewed to drain the water, solving the problem of water corrosion in enclosed spaces. After laying, the top of the enclosure is sealed with a sealing cap with a rubber gasket. The evenly distributed connecting bolts ensure uniform distribution of sealing pressure, and the handrail structure facilitates disassembly and assembly during maintenance. The entire system works in tandem to achieve safe transition and reliable protection of the cable in harsh marine environments.

[0036] The above description is only a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.

Claims

1. A cable transition device for laying a cable between a turret and a superstructure of a tanker, comprising a cable drum arranged on a turret platform and a superstructure platform, characterized in that: The box bodies are oppositely arranged on the well platform and superstructure platform and above the cable drum, and are open upward and downward, and a sealing cover is detachably arranged on the top of the box body, a closed guide structure is arranged between the two box bodies, a support module is arranged in the box body, and a drainage mechanism is arranged on the side of the bottom of the box body.

2. Cable transition device for laying a cable between a cofferdam and a superstructure of an oil tanker according to claim 1, characterized in that: The guide structure comprises butt pipes vertically arranged on the box body, and a transition cable pipe is connected between the butt pipes.

3. Cable transition device for laying a cable between a cofferdam and a superstructure of an oil tanker according to claim 2, characterized in that: A cable fixing module is arranged at the inner end of the butt pipe.

4. A cable transition device for laying a cable between a cofferdam and a superstructure of an oil tanker according to claim 3, characterized in that: The cable fixing module comprises a supporting plate fixed at the lower part of the inner cavity of the butt pipe, the length direction of the supporting plate is perpendicular to the axis of the butt pipe, the two sides of the supporting plate are downwardly bent to form anti-abrasion curved surfaces, and a plurality of fixing holes are arranged on the supporting plate and spaced apart along the length direction.

5. A cable transition device for laying a cable between a cofferdam and a superstructure of an oil tanker according to claim 2, characterized in that: The support module comprises a roller shaft arranged between the cable drum and the guide structure, the axis of the roller shaft is perpendicular to the cable axis, U-shaped clamping seats are arranged on the inner wall of the box body, the two ends of the roller shaft are rotatably connected in the clamping seats, and a plastic sleeve that can roll is sleeved on the roller shaft.

6. A cable transition device for laying a cable between a cofferdam and a superstructure of an oil tanker according to claim 1, characterized in that: The drainage mechanism comprises a drainage hole arranged on the side wall of the bottom of the box body, and a release screw plug is threadedly connected in the drainage hole.

7. A cable transition device for laying a cable between a cofferdam and a superstructure of an oil tanker according to claim 6, characterized in that: A fixing seat is arranged on the bottom of the side wall of the box body, and an anti-unthreading structure is arranged between the fixing seat and the outer end of the release screw plug.

8. A cable transition device for laying a cable between a cofferdam and a superstructure of an oil tanker according to claim 1, characterized in that: A horizontal connecting surface is arranged on the outer periphery of the top of the box body, a rubber gasket is arranged between the sealing cover and the connecting surface, and connecting bolts are uniformly arranged between the sealing cover and the connecting surface.

9. Cable transition device for laying a cable between a cofferdam and a superstructure of an oil tanker according to claim 8, characterized in that: A handrail is arranged on the top of the sealing cover.

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