A sealing device for outboard cables

Abstract

The application discloses a kind of through hull cable sealing devices, including bearing member, filling member and fastening member;The bearing member is in the form of tube structure as a whole, the inside can be supplied cable, outside is worn on the hull of outboard pressure vessel;The filling member is arranged between cable and bearing member, and is sealed from both ends by the fastening member set on cable under high pressure.The application can greatly improve the safety and reliability of through hull cable sealing, especially suitable for submarine and other marine underwater engineering, while having the advantages of simple structure, reasonable layout, simple construction, easy cable maintenance, replacement, beautiful appearance, corrosion resistance, aging resistance and the like.

Description

Technical Field

[0001] The invention relates to a deepwater cable sealing device, in particular to an outboard cable sealing device, and belongs to the technical field of marine underwater engineering. Background Art

[0002] As is known to all, marine underwater engineering technology refers to a comprehensive engineering technology that takes diving technology and underwater operation technology as its core, and designs and constructs platforms for mining and salvaging seabed oil and gas resources and mineral resources based on underwater space technology.

[0003] For underwater vessels used in marine underwater engineering, such as submarines, the sealing technology for outboard cables is usually to add various sealing fillers and sealants into the cable casing, so that the gap between the cable and the cable casing is completely bonded together with the sealant. The cable and the cable casing are together at the water-contacting end outside the cabin, and then the outside is wrapped and sealed with sealant and then bonded to the hull.

[0004] In actual application, the above-mentioned sealing technology cannot expand or contract synchronously when the ambient temperature and pressure change due to the large differences in the Poisson's ratio and Young's modulus of the sealant and filler, cable sheath, cable sleeve and other components used. As a result, the cable and sealant become detached, water leakage often occurs, and there is a great safety risk. At the same time, there are also very high requirements on the construction environment and the technical capabilities of the construction personnel, and there are problems such as inconvenience in maintenance and non-reusability.

[0005] Currently, a known outboard cable laying structure for ships (CN 209150650 U) is installed outside the hull of a ship. The structure includes a cable laying trough, a cable laying cover, a cable pressure strip, and a sealing rubber belt. The cable laying trough is rectangular, with its long sides parallel to the hull and embedded within it. This prior art outboard cable structure only includes a sealing rubber belt and is not designed for underwater ships, thus suffering from the aforementioned technical problems. Summary of the Invention

[0006] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a sealing device for an overboard cable, which can greatly improve the safety and reliability of the sealing of the overboard cable, and is particularly suitable for use in marine underwater projects such as ships or submersibles. At the same time, it has the advantages of simple structure, reasonable layout, simple construction, easy cable maintenance and replacement, beautiful appearance, corrosion resistance, and anti-aging.

[0007] The technical solution adopted by the present invention to solve the technical problem is:

[0008] A sealing device for cables passing overboard includes a load-bearing member, a filling member, and a fastening member. The load-bearing member is a tubular structure (hollow in the middle), the interior of which allows the cable to pass through, and the exterior of which is passed through the overboard pressure-resistant hull and welded to the hull. The filling member is arranged between the cable and the load-bearing member, and is sealed at both ends by a fastening member sleeved on the cable to perform high-pressure sealing.

[0009] Optionally, the fastening member includes a primary fastening member and a secondary fastening member, which are respectively arranged inside and outside both ends of the bearing member.

[0010] Optionally, the load-bearing member includes a cup-shaped conduit having a concave barrier ring in the middle of the interior of the cup-shaped conduit with a reduced diameter and in contact with the cable; the two ends of the interior of the cup-shaped conduit are respectively provided with a first locking structure that cooperates with the first-level fastening member, and the two ends of the exterior of the cup-shaped conduit are respectively provided with a second locking structure that cooperates with the second-level fastening member.

[0011] Optionally, the concave barrier ring is a central protrusion on the inner wall of the cup-shaped catheter, and the transverse cross-section of the central protrusion is concave and sunken;

[0012] The inner end of the high-pressure sealing and fastening rubber sleeve is arranged as an inclined surface that contracts toward the top (the side wall is arranged inclined), and fits with the raised end surface in the middle.

[0013] Optionally, the filling member includes a primary filling member and a secondary filling member respectively arranged on both sides of the concave barrier ring; the inner end of the primary filling member abuts against the concave barrier ring, and the outer end cooperates with the primary fastening member, or both the inner and outer ends of the primary filling member abut against the concave barrier ring; the inner end of the secondary filling member is tightly fitted on the inner side of the port of the cup-shaped catheter, and the outer end cooperates with the secondary fastening member.

[0014] Optionally, an air-insulated cavity is formed between the secondary filling member and the primary fastening member.

[0015] Optionally, an anti-slip component is further provided between the secondary fastening component and the second locking structure.

[0016] Optionally, the anti-slip component is a reverse locking anti-slip nut provided on the locking thread.

[0017] Optionally, the first locking structure is a compression sealing thread, and the primary fastening component is a compression screw plug; the second locking structure is a locking thread, and the secondary fastening component is a locking gland nut;

[0018] The first-level filling component is a high-pressure sealing and fastening rubber sleeve, and the second-level filling component is a conical high-pressure sealing and locking rubber sleeve.

[0019] Optionally, a compression flat washer is provided between the compression screw plug and the high-pressure sealing fastening rubber sleeve.

[0020] Compared with the prior art, the present invention provides an overboard cable sealing device that is used in combination with a load-bearing member, a filling member and a fastening member, wherein the load-bearing member serves as the load-bearing body through which the cable passes, and the filling member is used to fasten the cable, playing the role of a fastening member for high-pressure sealing, thereby ultimately solving the problem of easy water leakage when the ambient pressure and temperature change, and can greatly improve the safety and reliability of the overboard cable sealing. It is particularly suitable for use in marine underwater projects such as submarines, and has the advantages of simple structure, reasonable layout, simple construction, easy cable maintenance and replacement, beautiful appearance, corrosion resistance, and anti-aging. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and examples.

[0022] Figure 1 This is a main view of an embodiment 1 of the present invention, partially half-cut away, with the upper half being a cross-sectional view and the lower half being an external view.

[0023] Figure 2a It is a main view and partial half-section display of a load-bearing component in an embodiment 1 of the present invention, with the upper half being a cross-section view and the lower half being an external view.

[0024] Figure 2b It is a side view of the load-bearing component in one embodiment 1 of the present invention.

[0025] Figure 3a It is a main view and partial half-section display of a primary filling component in an embodiment 1 of the present invention, with the upper half being a cross-section view and the lower half being an external view (the following half-section view is similar).

[0026] Figure 3b It is a side view of a primary filling component in one embodiment 1 of the present invention.

[0027] Figure 3c This is a main view of a secondary filling component in an embodiment 1 of the present invention, partially half-sectioned.

[0028] Figure 3d It is a side view of the secondary filling component in one embodiment 1 of the present invention.

[0029] Figure 4a This is a front view of a primary fastening component in an embodiment 1 of the present invention, partially shown in half section.

[0030] Figure 4b It is a side view of a primary fastening component in one embodiment 1 of the present invention.

[0031] Figure 4cis a front view, partially sectioned, of a secondary fastening member of one embodiment 1 of the present invention.

[0032] Figure 4d is a side view of a secondary fastening member of one embodiment 1 of the present invention.

[0033] Figure 5a is a front view, partially sectioned, of a compression flat washer of one embodiment 1 of the present invention.

[0034] Figure 5b is a side view of a compression flat washer of one embodiment 1 of the present invention.

[0035] Figure 6 is a front view, partially sectioned, of one embodiment 2 of the present invention.

[0036] Figure 7a is a front view, partially sectioned, of a anti-escape member of one embodiment 1 of the present invention.

[0037] Figure 7b is a side view of a anti-escape member of one embodiment 1 of the present invention.

[0038] Figure 8 is a front view, partially sectioned, of one embodiment 3 of the present invention.

[0039] Figure 9 is a front view, partially sectioned, of one embodiment 4 of the present invention.

[0040] Figure legend:

[0041] 1 - bearing member; 11 - cup-shaped conduit; 111 - concave barrier ring; 1111 - middle protrusion; 112 - first locking structure; 1121 - compression sealing thread; 113 - second locking structure; 1131 - locking thread;

[0042] 2 - filling member; 21 - primary filling member; 211 - high-pressure sealing fastening rubber sleeve; 22 - secondary filling member; 221 - conical high-pressure sealing locking rubber sleeve;

[0043] 3 - fastening member; 31 - primary fastening member; 311 - compression screw; 3111 - compression sealing outer thread; 3112 - strip-shaped locking jaw; 32 - secondary fastening member; 321 - locking compression gland nut; 3211 - nut inner thread;

[0044] 4 - air isolation cavity;

[0045] 5 - anti-escape member; 51 - reverse locking anti-escape nut; 511 - nut inner thread;

[0046] 6 - compression flat washer;

[0047] 10-outboard cable sealing device; 20-outboard pressure hull; 30-cable. DETAILED DESCRIPTION

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0049] Example 1

[0050] Figure 1 、 Figure 2a 、 Figure 2b 、 Figure 3a 、 Figure 3b 、 Figure 3c 、 Figure 3d 、 Figure 4a 、 Figure 4b 、 Figure 4c Figure 4d 、 Figure 5a and Figure 5b The present invention is shown in a schematic structural diagram of a preferred embodiment 1 of the present invention, in which a sealing device 10 for an overboard cable is shown, comprising a load-bearing member 1, a filling member 2 and a fastening member 3; the load-bearing member 1 is a tubular structure as a whole, the interior of which allows the cable 30 to pass through, and the exterior is passed through the overboard pressure-resistant hull 20, for example, welded to the hull to maintain a seal with the hull; the filling member 2 is arranged between the cable 30 and the load-bearing member 1, and is sealed at both ends by the fastening member 3 sleeved on the cable 30.

[0051] This embodiment 1 addresses the defects of the sealing structure of the outboard cable currently used in marine underwater projects such as ships or submarines, and provides a sealing device that is particularly suitable for the passage of outboard cables to underwater projects. Specifically, the outboard cable is laid on the outboard pressure-resistant hull 20 through a load-bearing component 1, and the cable 30 is tightened and sealed by the internal filling component 2, and then the tightening component 3 is used to achieve the effect of locking the cable 30 and strong sealing.

[0052] In the specific application of the overboard cable sealing device 10 of this embodiment 1, the load-bearing member 1, which supports the main body of the cable 30, can be made of special marine steel. The concave barrier ring 111, compression sealing thread 1121, and locking thread 1131 (both serving as the locking mechanism) thereon can be manufactured through an integrated machining process. The filling member 2, which serves as the cable 30, can be manufactured through a high-quality, specific rubber die-casting process. The fastening member 3, which enhances the sealing performance, can be manufactured through machining of a specific copper material. These various components, made of these materials, are assembled in sequence to form the overall structure of the overboard cable sealing device 10 of this embodiment 1. Conventional structural types of such products in actual use do not have this design, and often leak during actual use, posing a significant threat to personal safety.

[0053] In a further optional implementation of this embodiment 1, the fastening member 3 includes a primary fastening member 31 and a secondary fastening member 32 , which are respectively arranged inside and outside the two ends of the bearing member 1 .

[0054] In a further optional implementation of this embodiment 1, the load-bearing member 1 includes a cup-shaped conduit 11, and the middle of the cup-shaped conduit 11 has a concave barrier ring 111 with a gradually decreasing diameter and in contact with the cable 30; the two ends of the interior of the cup-shaped conduit 11 are respectively provided with a first locking structure 112 that cooperates with the first-level fastening member 31, and the two ends of the exterior of the cup-shaped conduit 11 are respectively provided with a second locking structure 113 that cooperates with the second-level fastening member 32.

[0055] In a further optional implementation of this embodiment 1, the concave barrier ring 111 is an overall annular central protrusion 1111 on the inner wall of the cup-shaped catheter 11, and the transverse cross-sectional shape of the central protrusion 1111 is a concave sunken end (the cross-sections on both sides are triangles or trapezoids relative to each other, and the central axis of the triangle or trapezoid is roughly located at the center of the side wall of the hull).

[0056] The inner end of the high-pressure sealing and fastening rubber sleeve 211 is configured to have a corner that contracts toward the top, and fits in with the end surface of the middle protrusion 1111 .

[0057] The concave recessed edge can be formed by forming an angle between the central protrusion 1111 and the inner wall of the cup-shaped conduit 11 during processing, forming a concave recessed edge on the end surface of the concave barrier ring 111. The inner wall of the cup-shaped conduit 11 and the concave barrier ring 111 combine to form a concave-shaped integral body in transverse cross-section. In this first embodiment, the concave recessed edge has a triangular cross-section.

[0058] The sharp corner inner end of the high-pressure sealing fastening rubber sleeve 211 is tightly combined with the concave depression closing of the middle convex 1111 to form a sealing surface, and two high-pressure sealing fastening rubber sleeves 211 are simultaneously filled symmetrically from both sides inside the cup-shaped conduit 11 to achieve the locking of the cable 30 and the strong sealing performance. Another important advantage of the scheme of the present application is that the greater the external water pressure, the more the high-pressure sealing fastening rubber sleeve 211 is pressed inward, and the better the sealing effect achieved.

[0059] In a further optional implementation of the embodiment 1, the filling member 2 comprises a first filling member 21 and a second filling member 22 arranged on both sides of the concave barrier ring 111 respectively; the inner end of the first filling member 21 abuts against the concave barrier ring 111, and the outer end cooperates with the first fastening member 31. In the embodiment, the inner side of the cup-shaped conduit 11 (at both ends inside and outside the ship body respectively) is provided with an inner thread matched with the first fastening member 31, and the annular outer surface of the first fastening member 31 has an outer thread matched with the inner thread, and the first fastening member 31 is fastened into the cup-shaped conduit 11 by thread connection to inwardly press the first filling member 21.

[0060] The middle part of the first filling member 21 and the second filling member 22, and the second filling member 22 and the second fastening member 32 are all hollow structures and are sleeved outside the cable.

[0061] In a further optional implementation of the embodiment 1, the filling member 2 comprises a first filling member 21 and a second filling member 22 arranged on both sides of the concave barrier ring 111 respectively; the inner end of the first filling member 21 abuts against the concave barrier ring 111, and the outer end cooperates with the first fastening member 31, or the inner and outer ends of the first filling member 21 both abut against the concave barrier ring 111; the inner end of the second filling member 22 is tightly fitted inside the port of the cup-shaped conduit 11, and the outer end cooperates with the second fastening member 32.

[0062] In this specific embodiment 1, two primary fastening members 31 and two secondary fastening members 32 are provided. However, this is not limiting; at least two primary fastening members 31 and at least two secondary fastening members 32 may be provided. The number of concave barrier rings 111 is not limited to one as in embodiment 1; at least one may be provided. In this specific embodiment, two primary filling members 21 are provided. In this case, the inner ends of the primary filling members 21 abut against the concave barrier rings 111, while the outer ends mate with the primary fastening members 31. The number of primary filling members 21 may also be more than two. For example, if there are three primary filling members 21, and two concave barrier rings 111 are provided, the two primary filling members 21 on either side still mate with the primary fastening members 31 and concave barrier rings 111 at their respective ends, while the inner and outer ends of the central primary filling member 21 abut against the concave barrier ring 111. By providing different numbers of fastening members 3 and filling members 2, different levels of sealing effectiveness can be achieved.

[0063] In a further optional implementation of this embodiment 1, an air-isolating cavity 4 is formed between the secondary filling member 22 and the primary fastening member 31. The air-isolating cavity 4 is generally pre-set after the components are assembled.

[0064] With the help of the air isolation cavity 4, after the compression screw plug 311 locks and fixes the high-pressure sealing fastening rubber sleeve 211, the compressed air formed between it and the truncated cone-shaped (conical) high-pressure sealing locking rubber sleeve 221 pushes the conical high-pressure sealing locking rubber sleeve 221 inside the cup-shaped catheter 11 to play a sealing role.

[0065] In a further optional implementation of this embodiment 1, the first locking structure 112 is a compression sealing thread 1121, and the primary fastening member 31 is a compression screw plug 311; the second locking structure 113 is a locking thread 1131, and the secondary fastening member 32 is a locking gland nut 321;

[0066] The first-level filling component 21 is a high-pressure sealing and fastening rubber sleeve 211 , and the second-level filling component 22 is a conical high-pressure sealing and locking rubber sleeve 221 .

[0067] The outer end of the above-mentioned compression screw plug 311 can specifically be provided with a strip locking jaw 3112 on the circular plane, and a compression sealing external thread 3111 can be provided on the circumferential end face. The strip locking jaw 3112 and the compression sealing external thread 3111 are both completed in one piece by machining technology, and cooperate with the compression sealing threads 1121 provided at both ends inside the cup-shaped catheter 11, and are used to extrude the high-pressure sealing fastening rubber sleeve 211, so that the reverse force between it and the concave barrier ring prevents downward deformation, thereby achieving better locking of the cable 30 and realizing the first strong sealing performance.

[0068] The two ends of the cup-shaped conduit 11 are simultaneously assembled symmetrically toward the center of the cup-shaped conduit 11. The conical high-pressure sealing locking rubber sleeve 221, acting in concert with the inner wall of the cup-shaped conduit 11, clamps the outboard cable 30 more tightly, providing a tighter seal at both ends of the cup-shaped conduit 11 and achieving a secondary sealing effect. The internal nut threads 3211 disposed within the locking gland nut 321 cooperate with the locking threads 1131 to squeeze and lock the conical high-pressure sealing locking rubber sleeve 221, preventing it from loosening and enhancing the secondary sealing performance.

[0069] In a further optional implementation of this embodiment 1, a compression flat washer 6 is provided between the compression screw plug 311 and the high-pressure sealing and fastening rubber sleeve 211 .

[0070] The function of the compression flat washer 6 is to prevent the compression screw plug 311 from scratching the high-pressure sealing and fastening rubber sleeve 211 when rotating and locking, thereby preventing the high-pressure sealing and fastening rubber sleeve 211 from losing its sealing performance. The compression flat washer 6 can be completed by a stamping process.

[0071] Example 2

[0072] exist Figure 6 、 Figure 7a and Figure 7b In the illustrated embodiment 2, an overboard cable sealing device 10 is provided, and the technical solution is basically the same as that of embodiment 1, with the only difference being the following aspects.

[0073] In the specific implementation of this embodiment 2, an anti-slip component 5 is further provided between the secondary fastening component and the second locking structure 113. The anti-slip component 5 is used in conjunction with the locking thread to prevent the second locking structure 113 from loosening.

[0074] As one of the further optional implementations of this embodiment 2, the anti-slip component 5 is a reverse locking anti-slip nut 51 provided on the locking thread. The internal thread 511 of the reverse locking anti-slip nut 51 cooperates with the locking thread and also cooperates with the locking gland nut 321; the reverse locking anti-slip nut 51 is first screwed into the external thread 113 on the outside of the cup-shaped duct and screwed into enough space in the direction of the hull. After locking the locking gland nut 321, the reverse locking anti-slip nut 51 is rotated in the opposite direction (away from the hull) to press against the locking gland nut 321 to prevent the locking gland nut 321 from loosening and falling off. The reverse locking anti-slip nut 51 and the locking nut gland can all be made of specific copper and machined.

[0075] Examples 3 and 4

[0076] exist Figure 8 and Figure 9In another embodiment 3 and embodiment 4 shown respectively, the provided overboard cable sealing device 10 may be embodiment 1 or embodiment 2, the difference being that:

[0077] The concave recessed opening is similarly constructed by forming an angle between the central protrusion 1111 and the inner wall of the cup-shaped conduit 11 during processing, forming a concave recessed opening on the end surface of the concave barrier ring 111. The inner wall of the cup-shaped conduit 11 and the concave barrier ring 111 combine to form a concave cross-section. In Examples 3 and 4, the concave recessed opening is specifically designed as a rectangle and a rectangle with a chamfered front end, respectively.

[0078] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modifications and equivalent changes made to the above embodiment based on the technical essence of the present invention fall within the scope of protection of the present invention.

Claims

1. An outboard cable sealing device, characterized by: comprising a load-bearing member, a filling member and a fastening member; The load-bearing member is a tubular structure as a whole, the interior of which can be passed through by the cable, and the exterior is passed through the outboard pressure-resistant hull; the filling member is arranged between the cable and the load-bearing member, and is sealed at high pressure from both ends by a fastening member sleeved on the cable, the fastening member includes a primary fastening member and a secondary fastening member, which are respectively arranged inside and outside the two ends of the load-bearing member, the load-bearing member includes a cup-shaped conduit, the middle of the cup-shaped conduit has a concave barrier ring with a reduced diameter and in contact with the cable; the two ends of the cup-shaped conduit are respectively provided with a first locking structure that cooperates with the primary fastening member, and the two ends of the cup-shaped conduit are respectively provided with a second locking structure that cooperates with the secondary fastening member. The first locking structure is a compression sealing thread, and the first-level fastening component is a compression screw plug; the second locking structure is a locking thread, and the second-level fastening component is a locking gland nut; The filling member includes a primary filling member and a secondary filling member arranged on both sides of the concave barrier ring. The primary filling member is a high-pressure sealing and fastening rubber sleeve, and the secondary filling member is a truncated cone-shaped high-pressure sealing and locking rubber sleeve. The concave barrier ring is a central protrusion on the inner wall of the cup-shaped catheter, and the transverse cross-section of the central protrusion is concave and sunken. The inner end of the high-pressure sealing and fastening rubber sleeve is configured as a sharp corner that contracts toward the top and fits in with the raised end surface in the middle.

2. The overboard cable sealing device according to claim 1, characterized in that: The inner end of the first-level filling component rests on the concave barrier ring, and the outer end cooperates with the first-level fastening component, or both the inner and outer ends of the first-level filling component rest on the concave barrier ring; the inner end of the second-level filling component is tightly fitted on the inner side of the port of the cup-shaped catheter, and the outer end cooperates with the second-level fastening component.

3. The overboard cable sealing device according to claim 2, characterized in that: An air-insulated cavity is formed between the secondary filling component and the primary fastening component.

4. The overboard cable sealing device according to claim 3, characterized in that: An anti-slip component is also provided between the secondary fastening component and the second locking structure.

5. The sealing device for overboard cables according to claim 4, characterized in that: The anti-slip component is a reverse locking anti-slip nut arranged on the locking thread.

6. The overboard cable sealing device according to claim 5, characterized in that: A compression flat washer is provided between the compression screw plug and the high-pressure sealing fastening rubber sleeve.

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