Waterproof device for marine power cable

Abstract

The utility model discloses a waterproof device for a marine power cable, which comprises an outer sleeve and chuck assemblies fixed at the left end and the right end of the outer sleeve, each chuck assembly comprises a clamping ring, the left end and the right end of each clamping ring are both provided with external threads; the side wall of the inner container piece is fixedly sleeved with the clamping ring; the pressing cap is in threaded connection to the left end of the clamping ring, and a cap hole is formed in the center of the left end face of the pressing cap in a penetrating mode; and the inflatable sealing ring is fixed on the inner wall of the inner container piece, and the inflatable sealing ring is subjected to air sealing adjustment by an air sealing mechanism. According to the utility model, the chuck assembly is adopted to quickly seal and clamp the cable, and then the connecting part of the cable is arranged in the inner tube made of the ceramic material, so that the connecting part of the cable is covered and protected.

Description

Technical Field

[0001] This utility model specifically relates to the field of cable connection technology, and more specifically to a waterproof device for marine power cables. Background Technology

[0002] Marine cables operate in the harsh marine environment and must possess extremely high waterproof, moisture-proof, and corrosion-resistant properties to ensure normal operations on board and the safety of crew members. The waterproof performance of cable connections is particularly critical. Typically, cable connections are protected with insulating tape. However, due to the long-term voyages at sea, the salt and other corrosive substances in seawater or marine mist can easily cause the insulating tape to lose its adhesion, age, become brittle, and corrode, allowing moisture to penetrate the cable connections. This can lead to short circuits in the ship's electrical system, severely impacting normal ship operations. Utility Model Content

[0003] Therefore, this utility model proposes a waterproof device for marine power cables to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a waterproof device for marine power cables, comprising an outer sleeve and clamp assemblies fixed to the left and right ends of the outer sleeve, wherein the clamp assemblies include:

[0005] The clamping ring has external threads at both its left and right ends;

[0006] The inner liner has the clamping ring fixedly sleeved on its side wall;

[0007] A pressure cap is threaded to the left end of the clamping ring, and a cap hole is provided through the center of the left end face of the pressure cap;

[0008] And an inflatable sealing ring, which is fixed on the inner wall of the inner liner, and the inflatable sealing ring is adjusted by an air-sealing mechanism;

[0009] The inner liner has a raised ring on the inner ring at the left end, and the outer ring of the inner liner has a plurality of inwardly folded tongues arranged in a circular array. Each pair of adjacent tongues is spaced apart, and the hook of each tongue can be adapted to slide onto the conical inner wall of the cap.

[0010] Furthermore, as a preferred embodiment, the corners of each of the tongue depressor hooks are rounded.

[0011] Furthermore, as a preferred embodiment, a sealing bushing is provided between the inner liner and the clamping ring.

[0012] Furthermore, as a preferred embodiment, the inner liner, clamping ring, and sealing bushing are all provided with concentric perforations, forming an injection channel that is sealed and connected to the injection end of the inflatable sealing ring.

[0013] Furthermore, preferably, the gas sealing mechanism includes:

[0014] The slider, whose matching sliding arrangement is located in the sliding cavity on the clamping ring;

[0015] A sliding column, one end of which is fixedly connected to the slider, and the other end of which protrudes from the sliding cavity and is fixedly connected to the pressure block;

[0016] A spring is connected between the slider and the clamping ring, and the spring is wound around the side wall of the slider.

[0017] And a top-pressure nut, which is threaded onto the right end of the clamping ring, and is screwed to the left so that the top-pressure nut abuts against the pressure block.

[0018] Furthermore, as a preferred embodiment, the sliding cavity is connected to the gas injection channel, and when the slider slides into the left cavity of the sliding cavity, the slider can block the gas injection channel.

[0019] Furthermore, as a preferred embodiment, a sealing gasket is fixed on the top surface of the slider.

[0020] Furthermore, as a preferred embodiment, the outer tube is provided with an inner tube of the same length, and the protrusions on the sidewall of the inner tube are matched and embedded in the limiting groove on the inner wall of the outer tube.

[0021] Furthermore, as a preferred option, the inner tube is made of ceramic material.

[0022] This utility model adopts the above technology and has the following beneficial effects compared with the existing technology:

[0023] This utility model device uses a clamp assembly to quickly seal and clamp the cable. Specifically, the pressure cap is screwed in towards the clamping ring, pressing down on the pressure tongues so that each pressure tongue folds inward synchronously until it is firmly pressed against the cable to fix it. Then, the top pressure nut is screwed out backward, so that the pressure block is no longer limited by the top pressure nut. At this time, the elastic tension of the spring pushes the pressure block to move backward, thereby moving the slider to the right cavity of the slide chamber and opening the air injection channel. Then, the air injection device is used to inflate the air sealing ring, so that the air sealing ring seals the cable and the clamping ring through an expansion joint. Finally, the top pressure nut is screwed back to the initial position to close the air injection channel, thereby protecting the cable connection. Attached Figure Description

[0024] Figure 1 A three-dimensional structural diagram of a waterproof device for marine power cables;

[0025] Figure 2 A cross-sectional view of the clamp assembly in a waterproof device for marine power cables;

[0026] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle;

[0027] Figure 4 This is a schematic diagram showing the connection between the inner liner and the pressure cap in a waterproof device for marine power cables.

[0028] Figure 5 This is a schematic diagram of the installation of the outer and inner tubes in a waterproof device for marine power cables.

[0029] In the diagram: 1. Outer tube; 2. Clamp assembly; 3. Inner tube; 21. Inner liner; 22. Inflatable sealing ring; 23. Top pressure nut; 24. Pressure cap; 25. Pressure tongue; 26. Pressure block; 27. Spring; 28. Sliding column; 29. ​​Sliding cavity; 30. Sliding block; 31. Air injection channel; 32. Convex ring; 33. Clamping ring; 101. Limiting groove; 301. Convex strip. Detailed Implementation

[0030] With reference to the accompanying drawings of the embodiments of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below.

[0031] Example: Please refer to the appendix Figure 1-5 This utility model provides a technical solution: a waterproof device for marine power cables, comprising an outer sleeve 1 and clamp assemblies 2 fixed to the left and right ends of the outer sleeve 1, the clamp assemblies 2 comprising:

[0032] The clamping ring 33 has external threads at both its left and right ends;

[0033] The inner liner 21 has a clamping ring 33 fixedly sleeved on its side wall;

[0034] The pressure cap 24 is threadedly connected to the left end of the clamping ring 33, and a cap hole is provided through the center of the left end face of the pressure cap 24;

[0035] And an inflatable sealing ring 22, which is fixed on the inner wall of the inner liner 21, and the inflatable sealing ring 22 is adjusted by the air sealing mechanism.

[0036] The inner ring of the left end of the inner liner 21 is provided with a convex ring 32, and the outer ring of the left end of the inner liner 21 has a plurality of inwardly folded pressure tongues 25 arranged in a circular array, and each pair of adjacent pressure tongues 25 are spaced apart, and the hook of each pressure tongue 25 can be adapted to slide onto the conical inner wall of the pressure cap 24.

[0037] In this embodiment, the corners of each tongue depressor 25 hook are rounded.

[0038] In this embodiment, a sealing bushing is connected between the inner liner 21 and the clamping ring 33.

[0039] In this embodiment, the inner liner 21, the clamping ring 33, and the sealing bushing are all provided with concentric perforations, forming an air injection channel 31 that is sealed and connected to the air injection end of the air-filled sealing ring 22.

[0040] In this embodiment, the air-sealing mechanism includes:

[0041] The slider 30 is matched and slidably disposed within the sliding cavity 29 located on the clamping ring 33;

[0042] The sliding column 28 has one end fixedly connected to the slider 30, and the other end of the sliding column 28 passes through the sliding cavity 29 and is fixedly connected to the pressure block 26.

[0043] Spring 27 is connected between slider 30 and clamping ring 33, and spring 27 is wound around the side wall of slider 28;

[0044] And a top pressure nut 23, which is threaded onto the right end of the clamping ring 33, and by screwing it to the left, the top pressure nut 23 abuts against the pressure block 26.

[0045] In this embodiment, the sliding cavity 29 is connected to the air injection channel 31. When the slider 30 slides into the left cavity of the sliding cavity 29, the slider 30 can block the air injection channel 31.

[0046] In this embodiment, a sealing gasket is fixed on the top surface of the slider 30.

[0047] In this embodiment, an inner tube 3 of the same length is provided inside the outer tube 1, and the protrusion 301 on the side wall of the inner tube 3 is matched and embedded in the limiting groove 101 on the inner wall of the outer tube 1.

[0048] In this embodiment, the inner tube 3 is made of ceramic material.

[0049] In practical implementation, the novel device is threaded onto a cable, and then the connection between the two cables is screwed together. The novel device is then moved to the connection between the cables, and the connection part of the cable is placed inside the inner tube 3.

[0050] When using the clamp assembly 2 to seal and clamp the cable, screw the pressure cap 24 toward the clamping ring 33. The pressure cap presses down on the pressure tongues, causing each pressure tongue to fold inward synchronously until it is pressed tightly against the cable to fix it. Then, screw the top pressure nut 23 backward so that the pressure block 26 is no longer limited by the top pressure nut 23. At this time, the elastic tension of the spring pushes the pressure block to move backward, so that the slider 30 moves to the right cavity of the slide cavity and the air injection channel 31 is open. Then, use an air injection device to inflate the air sealing ring, so that the air sealing ring seals the cable and the clamping ring by expansion. Finally, screw the top pressure nut 23 back to the initial position to close the air injection channel 31.

[0051] The above-described 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 waterproofing device for marine power cables, comprising an outer sleeve (1) and a clamp assembly (2) fixed to the left and right ends of the outer sleeve (1), characterized in that, The clamp assembly (2) includes: The clamping ring (33) has external threads at both its left and right ends; The inner liner (21) has the clamping ring (33) fixedly sleeved on its side wall; A pressure cap (24) is threaded to the left end of the clamping ring (33), and a cap hole is provided through the center of the left end face of the pressure cap (24); And an inflatable sealing ring (22), which is fixed on the inner wall of the inner liner (21), and the inflatable sealing ring (22) is adjusted by an air sealing mechanism; The inner ring of the left end of the inner liner (21) is provided with a convex ring (32), and the outer ring of the left end of the inner liner (21) is arranged with multiple inwardly folded pressure tongues (25), and each pair of adjacent pressure tongues (25) are spaced apart. The hook of each pressure tongue (25) can be adapted to slide on the conical inner wall of the pressure cap (24).

2. A water protection device for a marine power cable according to claim 1, characterized in that: The corners of each of the hooks of the tongue depressor (25) are rounded.

3. A water protection device for a marine power cable according to claim 1, characterized in that: A sealing bushing is connected between the inner liner (21) and the clamping ring (33).

4. A waterproof device for marine power cables according to claim 3, characterized in that: The inner liner (21), clamping ring (33) and sealing bushing are all provided with concentric perforations, forming an air injection channel (31) that is sealed and connected to the air injection end of the air-filled sealing ring (22).

5. A water protection arrangement for a marine power cable according to claim 4, characterized in that: The air-sealing mechanism includes: The slider (30) is matched and slidably disposed in the sliding cavity (29) located on the clamping ring (33); A sliding column (28) has one end fixedly connected to the slider (30), and the other end of the sliding column (28) passes through the sliding cavity (29) and is fixedly connected to the pressure block (26); A spring (27) is connected between the slider (30) and the clamp (33), and the spring (27) is wound around the side wall of the slide (28); And a top pressure nut (23), which is threaded onto the right end of the clamping ring (33) and is screwed to the left so that the top pressure nut (23) abuts against the pressure block (26).

6. A water protection device for a marine power cable according to claim 5, characterized in that: The sliding cavity (29) is connected to the gas injection channel (31). When the slider (30) slides into the left cavity of the sliding cavity (29), the slider (30) can block the gas injection channel (31).

7. A water protection arrangement for a marine power cable according to claim 6, characterized in that: A sealing gasket is fixed on the top surface of the slider (30).

8. A water protection device for a marine power cable according to claim 1, characterized in that: The outer tube (1) is provided with an inner tube (3) of the same length, and the protrusion (301) on the side wall of the inner tube (3) is matched and embedded in the limiting groove (101) on the inner wall of the outer tube (1).

9. A water protection arrangement for a marine power cable according to claim 8, characterized in that: The inner tube (3) is made of ceramic material.

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