A watertight cable assembly sealing device for marine use

Abstract

The application relates to the technical field of cable sealing, and discloses a watertight cable assembly sealing device for marine use, which comprises a main body and a connecting block and further comprises a pushing mechanism installed on the outer surface of the connecting block, wherein the pushing mechanism can reduce the water leakage at the equipment connection when operating. The C-shaped ring is arranged, when the C-shaped ring pushes the threaded ring to move towards the fixed shell, the damaged threads are tightly attached to each other, the gap between the fixed shell and the rotating shell caused by the thread abrasion is reduced, when the pressure is too large after the threaded block two on the threaded ring and the threaded block one on the fixed shell are in contact, the threaded ring can conduct the pressure to the C-shaped ring, the C-shaped ring is deformed to a certain extent, the mutual abrasion between the threads is reduced, and the waterproofness of the cable assembly sealing device is further improved.

Description

Technical Field

[0001] This invention relates to the field of cable sealing technology, specifically to a sealing device for a marine watertight cable assembly. Background Technology

[0002] In today's society, a sealing device for a marine watertight cable assembly is a key basic component for the development and utilization of the ocean, holding an irreplaceable strategic position. It directly ensures the stable transmission of power and signals for major national marine engineering projects such as underwater observation networks, manned deep-sea submersibles, seabed oil and gas extraction, and offshore wind power. Its technological breakthroughs have broken foreign monopolies and supported the development of my country's deep-sea exploration, marine energy, and national defense security, representing a significant manifestation of China's marine economic and technological strength. Typical marine watertight cable assembly sealing devices use a pair of threaded housings at the cable connection point, with a sealing gasket installed inside each housing to achieve a seal. To ensure a tight seal, the housings are usually tightly screwed together. However, after repeated installation and disassembly, the threads inside the housings can become damaged or slip due to the significant frictional forces. This can create gaps between the threads, allowing seawater to enter the cable connection point and reducing the waterproofness of the cable assembly sealing device. Summary of the Invention

[0003] The purpose of this invention is to provide a sealing device for a marine watertight cable assembly to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a sealing device for a marine watertight cable assembly, comprising a main body and a connecting block, and further comprising: The actuating mechanism is installed on the outer surface of the connecting block to reduce water leakage at the equipment connection when the actuating mechanism is in operation. The fixing component is installed on the side wall of the pushing mechanism. When the fixing component is in operation, it can stabilize the sealing state of the equipment.

[0005] Furthermore, the main body includes: A sealing assembly is disposed on the exterior of the main body; The connecting component is located on the side wall of the main body.

[0006] Furthermore, the promoting organizations include: Deformation component, the deformation component is disposed on the outer surface of the connecting block; The constraint component is located at the bottom of the deformation component.

[0007] Furthermore, the fixing components include: A rotating component is disposed on the side wall of the deformation component; A synchronization component is located on the side wall of the rotating component.

[0008] Furthermore, the sealing assembly includes a fixed shell that is fixedly connected to the outer surface of the main body, and a rotating shell is provided on the side of the fixed shell away from the main body; The inner wall of the rotating shell is slidably connected to the outer surface of the connecting block, and a sealing gasket is fixedly connected to the inner wall of the rotating shell. Among them, a threaded block is fixedly connected to the outer surface of the fixed shell.

[0009] Furthermore, the connecting assembly includes several plugs fixedly connected to the side wall of the connecting block, and the several plugs are distributed circumferentially around the connecting block; Several slots are provided on the side of the plug away from the connector block, and the slots are distributed in a circle around the main body. The slot is located on the side wall of the main body.

[0010] Furthermore, the deformation component includes a push cylinder fixedly connected to the outer surface of the main body, and a sliding groove is provided on the side of the push cylinder away from the main body, the sliding groove being formed on the outer wall of the connecting block; A C-ring is provided at the top of the sliding groove. The side wall of the C-ring is fixedly connected to the side wall of the rotating shell, and the side of the C-ring away from the rotating shell is fixedly connected to the side wall of the threaded ring. Several rubber strips are provided on the side of the threaded ring away from the C-ring. The rubber strips are evenly distributed around the push cylinder, and the bottom of the rubber strips is fixedly connected to the outer surface of the push cylinder. Among them, the inner wall of the threaded ring is fixedly connected with a threaded block two.

[0011] Furthermore, the limiting component includes a synchronization ring that is slidably connected inside the sliding groove, and a blocking plate is fixedly connected to the side wall of the synchronization ring; The side wall of the baffle plate is fixedly connected with a locking block; The outer surface of the synchronization ring is fixedly connected with several limiting blocks, which are distributed at equal intervals around the synchronization ring.

[0012] Furthermore, the rotating assembly includes several connecting plates fixedly connected to the side wall of the baffle plate. The several connecting plates are circumferentially distributed around the baffle plate, and a rotating plate is provided on the side of the connecting plates away from the baffle plate. The bottom of the rotating plate is rotatably connected to the outer surface of the connecting block, and the top of the rotating plate is rotatably connected to the rotating block; The side wall of the rotating plate is fixedly connected to the side of the connecting plate away from the blocking plate. The rotating block has several friction blocks on its surface, and these friction blocks are distributed at equal intervals around the rotating block.

[0013] Furthermore, the synchronization component includes a C-shaped plate fixedly connected to the side wall of the rotating block, with the side of the C-shaped plate away from the rotating block being fixedly connected to the side wall of the rotating plate. A synchronization plate is fixedly connected to the side wall of the C-shaped plate, and the side of the synchronization plate away from the C-shaped plate is fixedly connected to the side wall of the adjacent rotating plate.

[0014] The present invention has the following beneficial effects: 1. In this invention, the C-ring is designed so that when the C-ring pushes the threaded ring towards the fixed shell, the damaged threads will fit together tightly, reducing the gaps between the fixed shell and the rotating shell caused by thread wear. When the threaded block two on the threaded ring comes into contact with the threaded block one on the fixed shell and the pressure is too high, the threaded ring will transmit the pressure to the C-ring, causing the C-ring to deform to a certain extent, reducing the mutual wear between the threads, thereby further improving the waterproof performance of the cable assembly sealing device.

[0015] 2. In this invention, the descent of the locking block causes the side wall of the locking block to contact the outer wall of the push cylinder and the inner wall of the connecting block, forming a compression. This causes the pushed cylinder to form folds, stopping the pull-out action of the push cylinder inside the sliding groove. This reduces the pulling force of the push cylinder, which is located at the top of the sliding groove and compresses the C-ring, from being flattened. It also reduces the pressure drop on the C-ring caused by the folds in the push cylinder. Due to the setting of the synchronization ring, the folds formed by the push cylinder under the influence of the rotation of the rotating shell are reduced, thereby improving the stability of the push cylinder during the assembly of the cable assembly sealing device.

[0016] 3. In this invention, after the workers have installed the fixed shell and the rotating shell, and no longer apply external pressure to the rotating shell, the C-ring will push the rotating shell away from the fixed shell under the influence of its own deformation. At this time, the movement of the rotating shell will create a gap between the sealing gasket and the side wall of the connecting block, thereby reducing the sealing performance of the device. Due to the setting of the rotating plate, when the rotating shell is slowly pushed away from the fixed shell by the C-ring, the friction between the rotating block and the inner wall of the rotating shell will restrict the movement of the rotating shell, reduce the possibility of water entering the device, and thus further improve the waterproof performance of the cable assembly sealing device underwater.

[0017] 4. In this invention, the bottom of the rotating block is close to the top of the rotating plate, thereby reducing displacement caused by the uncertain position of the rotating plate. For example, the rotating block located at the bottom of the connecting block and the top of the rotating plate will rotate under its own weight, causing the rotating shell to come into contact with the rotating block when it approaches the fixed shell, causing the movement of the rotating shell to be stuck. Due to the setting of the C-shaped plate, the situation where some rotating blocks rotate before the rotating shell rotates due to different positions of the rotating plate is reduced, thereby further improving the smoothness of the rotating shell movement during the assembly of the cable assembly sealing device.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall partial cross-sectional structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of A in the middle; Figure 4 This is a schematic diagram of the deformation component of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of B in the middle; Figure 6 This is a schematic diagram of the limiting component of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of C; Figure 8 This is a schematic diagram of the rotating component of the present invention; Figure 9 For the present invention Figure 8 A magnified view of D.

[0021] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Main body; 11. Sealing assembly; 111. Fixed shell; 112. Rotating shell; 113. Sealing gasket; 12. Connecting assembly; 121. Plug; 122. Slot; 2. Pushing mechanism; 21. Deformation assembly; 211. Pushing cylinder; 212. Sliding groove; 213. C-ring; 214. Threaded ring; 215. Rubber strip; 22. Restricting assembly; 221. Synchronizing ring; 222. Blocking plate; 223. Locking block; 3. Fixed assembly; 31. Rotating assembly; 311. Connecting plate; 312. Rotating plate; 313. Rotating block; 32. Synchronizing assembly; 321. C-shaped plate; 322. Synchronizing plate; 4. Connecting block. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1 - Figure 9 As shown, the present invention is a sealing device for a marine watertight cable assembly, comprising a main body 1 and a connecting block 4, and further comprising: The pushing mechanism 2 is installed on the outer surface of the connecting block 4. When the pushing mechanism 2 is in operation, it reduces the possibility of water leakage at the equipment connection. Fixing component 3 is installed on the side wall of the pushing mechanism 2. Fixing component 3 can stabilize the sealing state of the equipment when it is in operation.

[0024] Entity 1 includes: Sealing assembly 11, which is disposed on the outside of the main body 1; Connection component 12 is disposed on the side wall of the main body 1.

[0025] The driving body 2 includes: Deformation component 21 is disposed on the outer surface of connecting block 4; Restriction component 22 is located at the bottom of deformation component 21.

[0026] Fixed component 3 includes: Rotation component 31 is disposed on the side wall of deformation component 21; Synchronization component 32 is disposed on the side wall of rotation component 31.

[0027] The sealing assembly 11 includes a fixed shell 111 fixedly connected to the outer surface of the main body 1, and a rotating shell 112 is provided on the side of the fixed shell 111 away from the main body 1. The inner wall of the rotating shell 112 is slidably connected to the outer surface of the connecting block 4, and a sealing gasket 113 is fixedly connected to the inner wall of the rotating shell 112. Among them, the outer surface of the fixed shell 111 is fixedly connected with a threaded block 1, and the rotating shell 112 closes with the fixed shell 111 by rotating. At this time, the threaded ring 214 inside the rotating shell 112 will be tightly fitted with the threaded block 1 on the fixed shell 111 through the threaded block 2.

[0028] The connecting component 12 includes a plurality of plugs 121 fixedly connected to the side wall of the connecting block 4, and the plurality of plugs 121 are distributed circumferentially around the connecting block 4. The plug 121 has several slots 122 on the side away from the connecting block 4, and the slots 122 are distributed in a circle around the main body 1. The slot 122 is located on the side wall of the main body 1. The main body 1 and the connecting block 4 are connected through the plug 121 on the connecting block 4 and the slot 122 on the main body 1.

[0029] The deformation component 21 includes a push cylinder 211 fixedly connected to the outer surface of the main body 1. A sliding groove 212 is provided on the side of the push cylinder 211 away from the main body 1. The sliding groove 212 is opened on the outer wall of the connecting block 4. A C-ring 213 is provided on the top of the sliding groove 212. The side wall of the C-ring 213 is fixedly connected to the side wall of the rotating shell 112. The side of the C-ring 213 away from the rotating shell 112 is fixedly connected to the side wall of the threaded ring 214. A plurality of rubber strips 215 are provided on the side of the threaded ring 214 away from the C-shaped ring 213. The plurality of rubber strips 215 are evenly distributed with respect to the push cylinder 211, and the bottom of the rubber strips 215 is fixedly connected to the outer surface of the push cylinder 211. Among them, the inner wall of the threaded ring 214 is fixedly connected with the threaded block 2. When the main body 1 and the connecting block 4 continue to approach each other, the push cylinder 211 will be squeezed by the main body 1 and the connecting block 4. When the push cylinder 211 is squeezed, the push cylinder 211 located inside the sliding groove 212 will be curled under the guidance of the side wall of the sliding groove 212.

[0030] The limiting component 22 includes a synchronization ring 221 that is slidably connected inside the sliding groove 212, and a baffle plate 222 is fixedly connected to the side wall of the synchronization ring 221. A locking block 223 is fixedly connected to the side wall of the blocking plate 222; Among them, a number of limiting blocks are fixedly connected to the outer surface of the synchronization ring 221. The limiting blocks are distributed at equal intervals with the synchronization ring 221. When the synchronization ring 221 slides, it will cause the blocking plate 222 to deform and enter the sliding groove 212. At this time, the blocking plate 222 is in a downward motion state. When the blocking plate 222 moves downward, it will drive the locking block 223 to synchronize.

[0031] The rotating assembly 31 includes a plurality of connecting plates 311 fixedly connected to the side wall of the baffle plate 222. The plurality of connecting plates 311 are distributed circumferentially around the baffle plate 222. A rotating plate 312 is provided on the side of the connecting plates 311 away from the baffle plate 222. The bottom of the rotating plate 312 is rotatably connected to the outer surface of the connecting block 4, and the top of the rotating plate 312 is rotatably connected to the rotating block 313; The side wall of the rotating plate 312 is fixedly connected to the side of the connecting plate 311 away from the blocking plate 222. The rotating block 313 has several friction blocks on its surface. The friction blocks are equidistant from the rotating block 313. The connecting plate 311 moves synchronously with the blocking plate 222. At this time, the rotating plate 312, which is tilted towards the connecting block 4, is pulled back to the top and in contact with the inner wall of the rotating shell 112 by the movement of the connecting plate 311.

[0032] The synchronization component 32 includes a C-shaped plate 321 fixedly connected to the side wall of the rotating block 313, and the side of the C-shaped plate 321 away from the rotating block 313 is fixedly connected to the side wall of the rotating plate 312. A synchronization plate 322 is fixedly connected to the side wall of the C-shaped plate 321. The side of the synchronization plate 322 away from the C-shaped plate 321 is fixedly connected to the side wall of the adjacent rotating plate 312. When the interval between the rotating plates 312 increases, the synchronization plate 322 will pull the C-shaped plate 321 to deform. The deformation of the C-shaped plate 321 will cause the part connected to the top of the rotating block 313 to move towards the bottom of the rotating plate 312.

[0033] In use, the operator first mates the main body 1 and the connecting block 4 through the plug 121 on the connecting block 4 and the slot 122 on the main body 1. At this time, the contact surfaces of the main body 1 and the connecting block 4 are tightly fitted. After the main body 1 and the connecting block 4 are mated, the operator then rotates the rotating shell 112 to close it with the fixed shell 111. At this time, the threaded ring 214 inside the rotating shell 112 will be tightly fitted with the threaded block 1 on the fixed shell 111 through the threaded block 2. At this time, the sealing gasket 113 inside the rotating shell 112 will be deformed by compression under the closure of the fixed shell 111 and the rotating shell 112. At this time, the sealing gasket will be tightly fitted with the side of the connecting block 4 away from the main body 1 inside the rotating shell 112. At the same time, the fixed shell 111 and the rotating shell 112 after being closed will add a waterproof layer to the outside of the main body 1 and the connecting block 4, thereby completing the sealing of the cable assembly sealing device.

[0034] When the main body 1 and the connecting block 4 approach each other, the pushing cylinder 211, as it approaches the connecting block 4, will gradually be expanded by the outer diameter of the connecting block 4 and cover the outer surface of the connecting block 4. As the pushing cylinder 211 covers the connecting block 4, and the connecting block 4 continues to approach the main body 1, the side of the pushing cylinder 211 near the connecting block 4 will slide on the connecting block 4 and fall into the sliding groove 212 opened in the connecting block 4. As the main body 1 and the connecting block 4 continue to approach each other, the pushing cylinder 211 will be squeezed by the main body 1 and the connecting block 4. When pressed, the push cylinder 211 located inside the sliding groove 212 will curl under the guidance of the side wall of the sliding groove 212. At this time, the push cylinder 211 will form a new waterproof layer on the outside of the main body 1 and the connecting block 4. When the operator rotates and closes the rotating shell 112 and the fixed shell 111, the deformed push cylinder 211 will be squeezed by the rotating shell 112, thus making the push cylinder 211 wavy. When the C-shaped ring 213 inside the rotating shell 112 moves above the push cylinder 211, the deformed push cylinder 211 will apply pressure to the C-shaped ring 213, from The C-ring 213 deforms, pushing the threaded ring 214 towards the fixed housing 111. This causes the sidewalls of the threaded block one on the fixed housing 111 and the threaded block two on the threaded ring 214 to fit tightly together. Since both the fixed housing 111 and the rotating housing 112 are made of plastic, after repeated assembly and disassembly of the rotating housing 112, the threads on the fixed housing 111 and the threaded ring 214 will be subjected to mutual compression and friction, resulting in damage to the threads on the fixed housing 111 and the rotating housing 112 and a decrease in sealing performance. In this case, due to the setting of the C-ring 213, when the C-ring 213 pushes the threaded ring 214 to move towards the fixed shell 111, the damaged threads will fit together tightly, reducing the gap between the fixed shell 111 and the rotating shell 112 caused by thread wear. When the threaded block 214 on the threaded ring 214 comes into contact with the threaded block 1 on the fixed shell 111 and the pressure is too great, the threaded ring 214 will transmit the pressure to the C-ring 213, causing the C-ring 213 to deform to a certain extent, reducing the mutual wear between the threads, thereby further improving the waterproofness of the cable assembly sealing device.

[0035] When the rotating shell 112 rotates, the push cylinder 211 deforms under the pressure of the main body 1 and the connecting block 4 and comes into contact with the inner wall of the rotating shell 112. When the rotating shell 112 rotates, it will drive the part of the push cylinder 211 in contact to rotate. Since the part of the push cylinder 211 close to the main body 1 is fixed to the main body 1, when the push cylinder 211 is driven to rotate by the rotating shell 112, wrinkles will form on the surface of the push cylinder 211. When the push cylinder 211 forms wrinkles, the push cylinder 211 located inside the sliding groove 212 will be twisted and pulled out by the wrinkles. When the sliding groove 212 is pulled out, the rubber strip 215 at the top of the push cylinder 211 will come into contact with the limiting block at the top of the synchronization ring 221, thereby driving the synchronization ring 221 to slide away from the fixed shell 111 in the sliding groove 212. When the synchronization ring 221 slides, it will drive the baffle plate 222 to deform. The device moves into the sliding groove 212. At this time, the baffle plate 222 is in a downward movement state. When the baffle plate 222 moves downward, it will drive the locking block 223 synchronously. The descent of the locking block 223 will cause the side wall of the locking block 223 to contact the outer wall of the push cylinder 211 and the inner wall of the connecting block 4 to form a squeeze. This will stop the push cylinder 211, which is being pulled out of the sliding groove 212, from forming a fold. This will reduce the pulling force of the push cylinder 211, which is located at the top of the sliding groove 212 and is pressing the C-ring 213, from being flattened by the folds formed by the push cylinder 211 itself. This will reduce the pressure drop on the C-ring 213 caused by the folds formed by the push cylinder 211. Due to the setting of the synchronous ring 221, the folds formed by the push cylinder 211 under the influence of the rotation of the rotating shell 112 will be reduced, thereby improving the stability of the push cylinder 211 during the assembly of the cable assembly sealing device.

[0036] When the push cylinder 211 slides on the outer surface of the connecting block 4, it will first contact the locking block 223. Since the locking block 223 is made of rubber, it will move in the opposite direction to the main body 1. When the locking block 223 moves, it will cause the blocking plate 222 to bend in the same direction. The bending of the blocking plate 222 will push the rotating plate 312 to rotate on the outer surface of the connecting block 4 through the connecting plate 311. At this time, the surface of the rotating plate 312 in contact with the inside of the rotating shell 112 will move towards the connecting block. The rotation of direction 4 allows the rotating shell 112 to more smoothly cover the connecting block 4 as it moves towards the main body 1. When the blocking plate 222 moves downward under the drive of the synchronous ring 221, the connecting plate 311 will move synchronously with the blocking plate 222. At this time, the rotating plate 312, which is tilted towards the connecting block 4, will be pulled back to the state of contact between the top and the inner wall of the rotating shell 112 by the movement of the connecting plate 311. When the rotating plate 312 is pulled back to the initial state, the rotation of the rotating shell 112 will drive the top of the rotating plate 312 to rotate. When the rotating block 313 rotates, and the friction block of the rotating block 313 contacts the inner wall of the rotating shell 112, friction is generated between the rotating shell 112 and the rotating block 313, thus preventing the rotating shell 112 from moving away from the fixed shell 111 under the slow push of the C-ring 213. After the external personnel have installed the fixed shell 111 and the rotating shell 112, and no longer apply external pressure to the rotating shell 112, the C-ring 213 will push the rotating shell 112 away from the fixed shell 111 under the influence of its own deformation. At this time, the movement of the rotating shell 112 will create a gap between the sealing gasket 113 and the side wall of the connecting block 4, thereby reducing the sealing performance of the device. Due to the setting of the rotating plate 312, when the rotating shell 112 is slowly pushed away from the fixed shell 111 by the C-ring 213, the friction generated between the rotating block 313 and the inner wall of the rotating shell 112 will restrict the movement of the rotating shell 112, reduce the possibility of water entering the device, and further improve the underwater waterproof performance of the cable assembly sealing device.

[0037] When the rotating plate 312 rotates toward the connecting block 4, the synchronizing plate 322 on the side wall of the rotating plate 312 will drive the adjacent rotating plates 312 to move synchronously. When several rotating plates 312 rotate synchronously toward the connecting block 4, the interval between the rotating plates 312 will increase. When the interval between the rotating plates 312 increases, the synchronizing plate 322 will pull the C-shaped plate 321 to deform. The deformation of the C-shaped plate 321 will cause the part connected to the top of the rotating block 313 to move toward the bottom of the rotating plate 312, so that the bottom of the rotating block 313 is close to the top of the rotating plate 312, thereby reducing the impact of the rotating plate 312. Displacement caused by uncertain position, such as the rotating block 313 located at the top of the bottom rotating plate 312 of the connecting block 4, will rotate under its own weight, causing the rotating shell 112 to come into contact with the rotating block 313 when it approaches the fixed shell 111, causing the movement of the rotating shell 112 to be stuck. Due to the setting of the C-shaped plate 321, the occurrence of some rotating blocks 313 rotating before the rotating shell 112 rotates due to different positions of the rotating plate 312 is reduced, thereby further improving the smoothness of the movement of the rotating shell 112 during the assembly of the cable assembly sealing device.

[0038] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sealing device for a marine watertight cable assembly, comprising a main body (1) and a connecting block (4), characterized in that, Also includes: The pushing mechanism (2) is installed on the outer surface of the connecting block (4). When the pushing mechanism (2) is in operation, it reduces the occurrence of water leakage at the equipment connection. The fixing component (3) is installed on the side wall of the pushing mechanism (2). When the fixing component (3) is in operation, it can stabilize the sealing state of the equipment.

2. The sealing device for a marine watertight cable assembly according to claim 1, characterized in that: The main body (1) includes: A sealing assembly (11) is disposed on the outside of the body (1); A connecting component (12) is disposed on the side wall of the main body (1).

3. A sealing device for a marine watertight cable assembly according to claim 2, characterized in that: The propulsion mechanism (2) includes: Deformation component (21), the deformation component (21) is disposed on the outer surface of the connecting block (4); A limiting component (22) is disposed at the bottom of the deformation component (21).

4. A sealing device for a marine watertight cable assembly according to claim 3, characterized in that: The fixing component (3) includes: Rotation assembly (31), the rotation assembly (31) is disposed on the side wall of deformation assembly (21); Synchronization component (32) is disposed on the side wall of rotation component (31).

5. A sealing device for a marine watertight cable assembly according to claim 4, characterized in that: The sealing assembly (11) includes a fixed shell (111) fixedly connected to the outer surface of the main body (1), and a rotating shell (112) is provided on the side of the fixed shell (111) away from the main body (1). The inner wall of the rotating shell (112) is slidably connected to the outer surface of the connecting block (4), and a sealing gasket (113) is fixedly connected to the inner wall of the rotating shell (112). Among them, a threaded block is fixedly connected to the outer surface of the fixed shell (111).

6. A sealing device for a marine watertight cable assembly according to claim 4, characterized in that: The connecting assembly (12) includes a plurality of plugs (121) fixedly connected to the side wall of the connecting block (4), and the plurality of plugs (121) are distributed circumferentially around the connecting block (4); The plug (121) has several slots (122) on the side away from the connecting block (4), and the several slots (122) are distributed in a circle around the main body (1); The slot (122) is located on the side wall of the main body (1).

7. A sealing device for a marine watertight cable assembly according to claim 6, characterized in that: The deformation component (21) includes a push cylinder (211) fixedly connected to the outer surface of the main body (1). A sliding groove (212) is provided on the side of the push cylinder (211) away from the main body (1). The sliding groove (212) is opened on the outer wall of the connecting block (4). A C-ring (213) is provided at the top of the sliding groove (212). The side wall of the C-ring (213) is fixedly connected to the side wall of the rotating shell (112). The side of the C-ring (213) away from the rotating shell (112) is fixedly connected to the side wall of the threaded ring (214). A plurality of rubber strips (215) are provided on the side of the threaded ring (214) away from the C-ring (213). The plurality of rubber strips (215) are equidistantly distributed with respect to the push cylinder (211). The bottom of the rubber strips (215) is fixedly connected to the outer surface of the push cylinder (211). The push cylinder (211) may be made of rubber, and the inner wall of the threaded ring (214) is fixedly connected with a threaded block.

8. A sealing device for a marine watertight cable assembly according to claim 7, characterized in that: The limiting component (22) includes a synchronization ring (221) slidably connected inside the sliding groove (212), and a baffle plate (222) is fixedly connected to the side wall of the synchronization ring (221). A locking block (223) is fixedly connected to the side wall of the baffle plate (222); Among them, a number of limiting blocks are fixedly connected to the outer surface of the synchronization ring (221), and the number of limiting blocks are distributed at equal intervals with the synchronization ring (221).

9. A sealing device for a marine watertight cable assembly according to claim 8, characterized in that: The rotating assembly (31) includes a plurality of connecting plates (311) fixedly connected to the side wall of the baffle plate (222). The plurality of connecting plates (311) are distributed circumferentially around the baffle plate (222). A rotating plate (312) is provided on the side of the connecting plate (311) away from the baffle plate (222). The bottom of the rotating plate (312) is rotatably connected to the outer surface of the connecting block (4), and the top of the rotating plate (312) is rotatably connected to the rotating block (313). The side wall of the rotating plate (312) is fixedly connected to the side of the connecting plate (311) away from the blocking plate (222); The rotating block (313) has a plurality of friction blocks on its surface, and the plurality of friction blocks are distributed at equal intervals around the rotating block (313).

10. A sealing device for a marine watertight cable assembly according to claim 4, characterized in that: The synchronization component (32) includes a C-shaped plate (321) fixedly connected to the side wall of the rotating block (313), wherein the side of the C-shaped plate (321) away from the rotating block (313) is fixedly connected to the side wall of the rotating plate (312). A synchronization plate (322) is fixedly connected to the side wall of the C-shaped plate (321), and the side of the synchronization plate (322) away from the C-shaped plate (321) is fixedly connected to the side wall of the adjacent rotating plate (312).

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