Pipeline penetration sealing device of cable for marine equipment

Abstract

The invention provides a pipeline penetration sealing device of a cable for marine equipment, and relates to the technical field of cable penetration pipe sealing, the pipeline penetration sealing device comprises a cable penetration pipe and a mounting plate, and the cable penetration pipe is welded on the mounting plate in a penetrating manner; two double-rotation-direction threaded shafts are symmetrically mounted on the mounting plate in a penetrating manner, two extrusion rings are symmetrically arranged on the two double-rotation-direction threaded shafts, and rubber sealing rings of conical structures are fixedly connected to the opposite sides of the two extrusion rings; two vertical lug blocks which are symmetrically arranged are integrally formed on the peripheries of the extrusion rings; four sections of threads which are arranged on the two double-rotation-direction threaded shafts in the reverse rotation direction are correspondingly matched with the four vertical lug blocks on the two extrusion rings in a penetrating manner in a thread screwing manner; two longitudinally-arranged dowel bars are symmetrically welded to the vertical lug block, and top pressing rings are welded to the head ends of the two longitudinally-arranged dowel bars. The two sealing operations can be synchronously driven and executed at a time, so that the trouble of sequentially executing the two sealing operations step by step can be saved, and the operation is convenient and efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of cable pipe penetration sealing, and in particular to a pipe penetration sealing device for cables used in marine equipment. Background Art

[0002] In marine equipment, especially marine equipment used in seawater, in order to prevent seawater from leaking into it through the gap between the pipe and the cable, it is necessary to configure a device for sealing the cable pipe.

[0003] The existing sealing device is used to pass the cable through the tube welded on the shell of the marine equipment, and the sealing device is equipped with two cable sealing components for sealing the openings at both ends of the gap between the cable and the tube, and a driving mechanism for driving the cable sealing component to seal. In order to achieve synchronous driving of the two cable sealing components, the driving mechanism also needs to be installed through the shell of the marine equipment. In this way, a movable gap will be generated between the driving mechanism and the shell of the marine equipment. The movable gap also needs to be sealed to prevent external seawater from entering the interior of the marine equipment through it. However, there is mostly a lack of a synchronous transmission mechanism between the gap sealing component and the cable sealing component that seals the movable gap, resulting in the top pressure sealing operation of the two sealing components needing to be performed step by step, which is more troublesome and inconvenient to operate. Summary of the Invention

[0004] In view of this, the present invention provides a pipeline penetration sealing device for marine equipment cables to solve the problem that the top pressure sealing operation of two sealing components needs to be performed step by step, which is cumbersome and inconvenient to operate.

[0005] The technical solution proposed by the present invention is: a pipeline penetration sealing device for cables used in marine equipment, specifically comprising a cable pipeline and a mounting plate, wherein the cable pipeline is welded through the mounting plate; The cable entry tube is used to pass the cable through the tube; the mounting plate is symmetrically installed with two double-rotation threaded shafts, and the two double-rotation threaded shafts are symmetrically provided with two extrusion rings, and the opposite sides of the two extrusion rings are fixedly connected with a rubber sealing ring with a conical structure; the outer circumference of the extrusion ring is integrally formed with two symmetrically arranged vertical ear blocks, and the four sections of counter-rotating threads on the two double-rotation threaded shafts correspond to the four vertical ear blocks on the two extrusion rings in the form of threaded screwing and cooperate with each other; two longitudinal force transmission rods are symmetrically welded on the vertical ear blocks, and the head ends of the two longitudinal force transmission rods are welded with a top pressure ring, and a rubber sealing ring is fixedly connected to the side of the top pressure ring facing the mounting plate, when the rubber sealing ring slides toward the mounting plate, it presses against the mounting plate and covers the opening on the corresponding side of the rotating gap between the double-rotation threaded shaft and the mounting plate; when the rubber sealing ring slides toward the mounting plate, it is plugged and sealed in the opening on the corresponding side of the annular gap between the cable tube and the cable; Furthermore, a synchronous driving ring is rotatably installed on the outer periphery of the cable tube, a circle of jacks is penetrated through the peripheral wall of the synchronous driving ring, and a circle of gears is provided on the outer periphery of the synchronous driving ring; Spur gears are welded onto the two double-rotation threaded shafts, and a circle of gear plates on the synchronous driving ring is meshed with the two spur gears for transmission.

[0006] Furthermore, it also includes a booster drive shaft, the head end portion of which is selectively plugged into a circle of sockets.

[0007] Furthermore, the top pressure ring and the rubber sealing ring are both slidably matched with the double-rotation threaded shaft at the corresponding position, and the middle part of the double-rotation threaded shaft is symmetrically fixed with two conical sealing blocks; The portion of the rubber sealing ring close to the top pressure ring has a trapezoidal cross-section structure, and a conical sealing surface is formed on the inner periphery of the portion. When the rubber sealing ring is in top pressure contact with the mounting plate, the conical sealing surface is squeezed and pressed against the conical sealing block on the corresponding side.

[0008] Furthermore, the end of the inner hole of the rubber sealing ring away from the extrusion ring has an oblique cross-section structure, and the oblique cross-section structure forms a conical oblique section on the inner hole, and a suspended groove of an annular structure is formed between the conical oblique section and the cable; The mounting plate is a side plate of the shell of the marine equipment; when the two rubber sealing ring plugs are inserted into the openings on both sides of the annular gap between the cable and the cable conduit, the annular gap can be sealed to prevent external seawater from leaking into the interior of the marine equipment shell through the annular gap, causing immersion corrosion damage to the internal equipment and various instruments of the shell; when the rubber sealing ring plug is inserted into the opening of the annular gap, its outer peripheral conical surface is in contact with the conical extrusion surface, which can squeeze and seal the gap between the outer periphery of the rubber sealing ring and the inner periphery of the cable conduit, and when the outer peripheral conical surface is in contact with the conical extrusion surface, the two can use their mutual inclined guiding principle to seal the rubber seal The annular cone tip of the ring presses toward the cable and forces the inner circumference of the rubber sealing ring to be pressed tightly against the outer circumference of the cable, thereby sealing the gap between the inner circumference of the rubber sealing ring and the outer circumference of the cable. In this way, the rubber sealing ring can seal the opening of the annular gap and indirectly complete the sealing of the annular gap and the cable conduit. Due to the presence of the suspended groove, there is a lack of support between the annular cone tip of the rubber sealing ring and the cable, which indirectly enhances the extrusion effect of the outer conical surface and the conical extrusion surface on the annular cone tip, so that the inner circumference of the rubber sealing ring is more tightly squeezed on the outer circumference of the cable, thereby enhancing the sealing performance of the rubber sealing ring.

[0009] Furthermore, two limiting rings are symmetrically fixedly mounted on the part of the double-rotational threaded shaft located between the two conical sealing blocks, and the two limiting rings are respectively rotatably fitted with the two sides of the mounting plate.

[0010] Furthermore, when the rubber sealing ring is pressed against the mounting plate, its tail end is pressed against and in contact with the portion of the mounting plate located outside the limiting ring, and covers the limiting ring inside.

[0011] Furthermore, the openings at both ends of the cable conduit are provided with conical extrusion surfaces, and when the rubber sealing ring is inserted into the opening of the annular gap, its outer circumferential conical surface abuts against the conical extrusion surface; The camming member is pressed against the camming member so that the camming member is in close contact with the camming member, and the camming member is pressed against the camming member so that the camming member is in close contact with the camming member. It can prevent external seawater from leaking into the shell of marine equipment through the rotating gap; the synchronously rotating double-direction threaded shaft can drive the two top pressure rings and the two rubber sealing rings to slide toward each other (slide toward the mounting plate), thereby blocking and sealing the annular gap, and the power is transmitted through the longitudinal force transmission rod. In the above process, the two top pressure rings can jointly drive the four extrusion rings and rubber sealing rings to slide toward each other (slide toward the mounting plate), thereby sealing the rotating gap. In this way, the above two sealing operations can be synchronously driven and executed at one time, which can save the trouble of performing the two sealing operations step by step, and the operation is convenient and efficient.

[0012] The present invention provides a pipeline penetration sealing device for a cable used in marine equipment, which has the following beneficial effects: 1. When two rubber sealing rings are inserted into the openings on both sides of the annular gap between the cable and the cable conduit, the annular gap can be sealed to prevent external seawater from leaking into the interior of the marine equipment shell through the annular gap, causing immersion corrosion damage to the equipment and various instruments inside the shell.

[0013] Second, due to the existence of the suspended groove, there is a lack of support between the annular cone tip of the rubber sealing ring and the cable, which will indirectly enhance the extrusion effect of the outer conical surface and the conical extrusion surface on the annular cone tip, making the inner periphery of the rubber sealing ring more tightly squeezed on the outer periphery of the cable, thereby improving the sealing performance of the rubber sealing ring.

[0014] 3. The two sealing covers located on both sides of the mounting plate and arranged in a mutually supporting manner can cover the openings on both sides of the rotating gap between the dual-rotation threaded shaft and the mounting plate, thereby indirectly sealing the rotating gap, which can prevent external seawater from leaking into the shell of the marine equipment through the rotating gap.

[0015] IV. The synchronously rotating double-helix threaded shaft can drive the two pressing rings and the two rubber sealing rings to slide towards each other (slide towards the mounting plate), block and seal the annular gap. And through the power transmission of the longitudinally arranged force transmission rod, during the above process, the two pressing rings can jointly drive the four extrusion rings and the rubber sealing ring to slide towards each other (slide towards the mounting plate) to seal the rotating gap. In this way, the above two sealing operations can be synchronously driven and executed at one time, which can save the trouble of sequentially performing these two sealing operations step by step, and the operation is convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0017] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0018] In the drawings: Figure 1 shows the overall structural schematic diagram of the present invention; Figure 2 shows the schematic diagram of the bottom side view of the whole of the present invention; Figure 3 shows the schematic diagram of the half-section internal structure of the cable pipe in the present invention; Figure 4 shows the Figure 4 magnified structural schematic diagram of part A in the present invention; Figure 5 shows the schematic diagram of the disassembly state of the extrusion ring and the synchronous drive ring in the present invention; Figure 6 shows the relative position relationship diagram of the rubber sealing ring and the cable in the half-section state in the present invention; Figure 7 shows the schematic diagram of the half-section internal structure of the rubber sealing ring in the present invention; Figure 8 shows the structural schematic diagram of the double-helix threaded shaft in the present invention; Figure 9 shows the structural schematic diagram of the synchronous drive ring in the present invention.

[0019] LIST OF REFERENCE NUMERALS: 1. Cable pipe; 101. Conical extrusion surface; 2. Mounting plate; 3. Extrusion ring; 301. Upright ear block; 302. Longitudinally arranged force transmission rod; 303. Pressing ring; 304. Rubber sealing ring; 3041. Conical sealing surface; 305. Rubber sealing ring; 3051. Conical inclined section; 4. Cable; 5. Double-rotation threaded shaft; 501. Spur gear; 502. Limiting ring; 503. Conical sealing block; 6. Afterburner drive shaft; 7. Synchronous drive ring; 701. Jack; 8. Suspended slot. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The following is an embodiment of the present invention, please refer to Figures 1 to 9 : This embodiment provides a pipeline penetration sealing device for cables used in marine equipment, comprising a cable pipe 1 and a mounting plate 2, wherein the cable pipe 1 is welded through the mounting plate 2; The cable conduit 1 is used to wear the cable 4; two double-rotation threaded shafts 5 are symmetrically installed on the mounting plate 2, and two extrusion rings 3 are symmetrically arranged on the two double-rotation threaded shafts 5. The two extrusion rings 3 have rubber sealing rings 305 with a conical structure fixed on opposite sides; the outer circumference of the extrusion ring 3 is integrally formed with two symmetrically arranged vertical ear blocks 301, and the four sections of counter-rotational threads on the two double-rotation threaded shafts 5 correspond to the four vertical ear blocks 301 on the two extrusion rings 3 in the form of threaded screws; the vertical ear blocks 301 are opposite to each other. There are two longitudinal force transmission rods 302 welded thereto, and top pressure rings 303 are welded to the head ends of the two longitudinal force transmission rods 302. A rubber sealing ring 304 is fixedly connected to the side of the top pressure ring 303 facing the mounting plate 2. When the rubber sealing ring 304 slides toward the mounting plate 2, it presses against the mounting plate 2 and covers the opening on the corresponding side of the rotating gap between the double-rotation threaded shaft 5 and the mounting plate 2 inside it; when the rubber sealing ring 305 slides toward the mounting plate 2, it is plugged and sealed in the opening on the corresponding side of the annular gap between the cable conduit 1 and the cable 4.

[0022] Preferably, a synchronous drive ring 7 is rotatably installed on the outer periphery of the cable conduit 1, a circle of jacks 701 is penetrated through the peripheral wall of the synchronous drive ring 7, and a circle of gears is provided on the outer periphery of the synchronous drive ring 7; spur gears 501 are welded on the two double-rotation threaded shafts 5, and a circle of gears on the synchronous drive ring 7 is engaged with the two spur gears 501 for transmission.

[0023] Preferably, it further comprises a boosting drive shaft 6 , the head end portion of the boosting drive shaft 6 being plug-fitted with a circle of sockets 701 in an optional manner.

[0024] Preferably, both the top pressing ring 303 and the rubber sealing ring 304 are slidably engaged with the double-helix threaded shaft 5 at corresponding positions. Two conical sealing blocks 503 are symmetrically and fixedly sleeved on the middle part of the double-helix threaded shaft 5. The part of the rubber sealing ring 304 close to the top pressing ring 303 has a trapezoidal cross-section structure, and a conical sealing surface 3041 is formed on the inner circumference of this part. When the rubber sealing ring 304 is in top pressing contact with the mounting plate 2, the conical sealing surface 3041 is in pressing contact with the corresponding conical sealing block 503.

[0025] Preferably, one end of the inner hole of the rubber sealing ring 305 far from the pressing ring 3 has an inclined cutting structure, and a conical inclined section 3051 is formed on the inner hole. An annular suspended groove 8 is formed at an interval between the conical inclined section 3051 and the cable 4.

[0026] Preferably, two limiting rings 502 are symmetrically and fixedly sleeved on the part of the double-helix threaded shaft 5 between the two conical sealing blocks 503, and the two limiting rings 502 are respectively in rotational contact with both sides of the mounting plate 2.

[0027] Preferably, when the rubber sealing ring 304 is in top pressing contact with the mounting plate 2, its tail end is in pressing contact with the part of the mounting plate 2 outside the limiting ring 502 and covers the limiting ring 502 inside it.

[0028] Preferably, conical pressing surfaces 101 are provided at both openings of the cable pipe 1.

[0029] The working principle, specific details, implementation steps, functions and mutual relationships of each feature, and the role it plays in implementing the technical solution will be elaborated and explained in detail below: The mounting plate 2 is a side plate of the marine equipment housing; when two rubber sealing rings 305 are inserted into the two openings on both sides of the annular gap between the cable 4 and the cable pipe 1, the annular gap can be sealed to prevent seawater from leaking into the interior of the marine equipment housing through the annular gap and causing immersion corrosion damage to the equipment and various instruments inside the housing; when the rubber sealing ring 305 is inserted into the opening of the annular gap, its outer peripheral conical surface abuts against the conical extrusion surface 101, which can squeeze and seal the gap between the outer periphery of the rubber sealing ring 305 and the inner periphery of the cable pipe 1. Moreover, when the outer peripheral conical surface abuts against the conical extrusion surface 101, the two can, through their mutual inclination guiding principle, press the annular conical tip part of the rubber sealing ring 305 towards the cable 4 and force the inner periphery of the rubber sealing ring 305 to tightly press against the outer periphery of the cable 4 to seal the gap between the inner periphery of the rubber sealing ring 305 and the outer periphery of the cable 4. In this way, the rubber sealing ring 305 can seal the opening of the annular gap and indirectly complete the blocking and sealing of the annular gap and the cable pipe 1; due to the existence of the suspension groove 8, there is no support between the annular conical tip part of the rubber sealing ring 305 and the cable 4, which will indirectly enhance the extrusion effect of the outer peripheral conical surface on the conical extrusion surface 101 on the annular conical tip part, making the inner periphery of the rubber sealing ring 305 hold and squeeze more tightly against the outer periphery of the cable 4 and improving the sealing performance of the rubber sealing ring 305.

[0030] When the tail end of the rubber sealing ring 305 is in extrusion contact with the part of the mounting plate 2 outside the limit ring 502, and at the same time, the conical sealing surface 3041 is in extrusion contact with the corresponding conical sealing block 503, the design can simultaneously squeeze and seal the gap between the tail end of the rubber sealing ring 305 and the mounting plate 2 and the gap between the conical sealing surface 3041 and the outer peripheral conical surface of the conical sealing block 503, and form a sealed cover in a closed state between the rubber sealing ring 305 and the mounting plate 2. The two sealed covers located on both sides of the mounting plate 2 and arranged in a mutually supporting manner can cover the two openings on both sides of the rotating gap between the double - helix threaded shaft 5 and the mounting plate 2 inside them, indirectly realizing the sealing of the rotating gap, which can prevent seawater from leaking into the housing of the marine equipment through the rotating gap.

[0031] Synchronously rotating the double - helix threaded shaft 5 can drive the two pressing rings 303 and the two rubber sealing rings 305 to slide towards each other (slide towards the mounting plate 2) to block and seal the annular gap. And through the power transmission of the longitudinally arranged force - transmitting rod 302, in the above process, the two pressing rings 303 can drive the four extrusion rings 3 and the rubber sealing ring 304 to slide towards each other (slide towards the mounting plate 2) to seal the rotating gap. In this way, the above two sealing operations can be driven and executed synchronously at one time, which can save the trouble of sequentially performing these two sealing operations step by step and is convenient and efficient to operate.

[0032] By synchronously driving the meshing transmission between the tooth segments on one turn of the synchronous drive ring 7 and the two spur gears 501, rotating the synchronous drive ring 7 can drive the two double-helical threaded shafts 5 to rotate synchronously, and the synchronous drive ring 7 can be rotationally driven by the force-applying drive shaft 6.

[0033] In this article, the following points need attention: 1. The attached drawings of the embodiments of the present invention only relate to the structures involved in the embodiments of the present invention, and other structures can refer to the general design.

[0034] 2. Without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0035] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A pipeline penetration sealing device for a cable used in marine equipment, comprising a cable through-tube (1) and a mounting plate (2), wherein the cable through-tube (1) is welded through the mounting plate (2). It is characterized in that, The cable through-tube (1) is used for threading a cable (4); two double-helix threaded shafts (5) are symmetrically and penetratingly installed on the mounting plate (2), and two pressing rings (3) are symmetrically arranged on the two double-helix threaded shafts (5). On the opposite sides of the two pressing rings (3), rubber sealing rings (305) with a conical structure are fixedly connected; on the outer periphery of the pressing ring (3), two symmetrically arranged vertical ear blocks (301) are integrally formed, and the four sections of threads with reverse helix directions on the two double-helix threaded shafts (5) are in threaded engagement with the four vertical ear blocks (301) on the two pressing rings (3) in a threaded screwing manner; on the vertical ear blocks (301), two longitudinally arranged force-transmitting rods (302) are symmetrically welded, and at the first ends of the two longitudinally arranged force-transmitting rods (302), a pressing ring (303) is welded. On the side of the pressing ring (303) facing the mounting plate (2), a rubber sealing ring (304) is fixedly connected. When the rubber sealing ring (304) slides towards the mounting plate (2), it makes top-pressure contact with the mounting plate (2) and shields the openings on the corresponding sides in the rotational clearance between the double-helix threaded shaft (5) and the mounting plate (2) inside it. When the rubber sealing ring (305) slides towards the mounting plate (2), it plugs and seals the openings on the corresponding sides in the annular gap between the cable through-tube (1) and the cable (4).

2. The pipe penetration sealing device for a cable used in marine equipment according to claim 1, characterized in that, A synchronous drive ring (7) is rotatably installed on the outer periphery of the cable through-tube (1). A circle of jack holes (701) is penetrated through the peripheral wall of the synchronous drive ring (7), and a circle of tooth pieces is arranged on the outer periphery of the synchronous drive ring (7). On both of the two double-helix threaded shafts (5), spur gears (501) are welded and sleeved, and the circle of tooth pieces on the synchronous drive ring (7) is in meshing transmission with the two spur gears (501).

3. The pipe penetration sealing device for a cable used in marine equipment according to claim 2, characterized in that, It further includes a force-applying drive shaft (6), and the first end part of the force-applying drive shaft (6) is inserted into the circle of jack holes (701) in a selectable manner.

4. The pipe penetration sealing device for a cable used in marine equipment according to claim 1, characterized in that, The pressing ring (303) and the rubber sealing ring (304) are both in sliding fit with the double-helix threaded shaft (5) at the corresponding positions, and two conical sealing blocks (503) are symmetrically and fixedly sleeved on the middle part of the double-helix threaded shaft (5). The part of the rubber sealing ring (304) close to the pressing ring (303) has a trapezoidal cross-section structure, and a conical sealing surface (3041) is formed on the inner circumference of this part. When the rubber sealing ring (304) makes top-pressure contact with the mounting plate (2), the conical sealing surface (3041) makes pressing contact with the corresponding conical sealing block (503).

5. The pipe penetration sealing device for a cable used in marine equipment according to claim 1, characterized in that, One end of the inner hole of the rubber sealing ring (305) far from the pressing ring (3) has an inclined cutting structure, and a conical inclined section (3051) is formed on this inner hole. An annular suspended groove (8) is formed at an interval between the conical inclined section (3051) and the cable (4).

6. The pipe penetration sealing device for a cable used in marine equipment according to claim 1, characterized in that, On the double - helix thread shaft (5), two limiting rings (502) are symmetrically and fixedly sleeved on the part between two conical sealing blocks (503), and the two limiting rings (502) are respectively in rotational contact with both sides of the mounting plate (2).

7. The pipe penetration sealing device for a cable used in marine equipment according to claim 6, characterized in that, When the rubber sealing ring (304) is in pressing contact with the mounting plate (2), its tail end is in extrusion and abutting contact with the part of the mounting plate (2) located outside the limiting ring (502), and the limiting ring (502) is masked inside it.

8. The pipeline penetration sealing device for a cable used in marine equipment according to claim 1, characterized in that, Conical extrusion surfaces (101) are provided at both openings of the cable pipe (1). When the rubber sealing ring (305) is inserted into the opening of the annular gap, its outer conical surface is in abutting contact with the conical extrusion surface (101).

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