Submarine cable pulling device

Abstract

The present invention provides a submarine cable traction device, comprising: a first cone sleeve, a second cone sleeve, a connector, a sealing assembly and a traction member; the first cone sleeve, the connector and the second cone sleeve are coaxially arranged, the first cone sleeve is connected to the second cone sleeve through the connector, and the connector and the second cone sleeve are detachably connected, and the traction member is arranged at the end of the second cone sleeve away from the connector; the first cone sleeve is used to pass through and seal the submarine cable; the connector is provided with a plurality of through holes, the plurality of through holes are used to pass through the electrical unit and the optical unit of the submarine cable, and the optical unit is connected to the sealing assembly after passing through the through holes; the second cone sleeve is used to block the electrical unit and the optical unit. In the submarine cable traction device of the present invention, the second cone sleeve is detachably connected to the connector, the first cone sleeve is used to seal the submarine cable with glue, the electrical unit and the optical unit of the submarine cable pass through the plurality of through holes on the connector and then extend into the second cone sleeve. On the premise of achieving submarine cable sealing, the performance of the electrical unit and the optical unit can be detected in real time to ensure the reliability of submarine cable laying.

Description

Technical Field

[0001] The present invention relates to the technical field of submarine cable installation equipment, and in particular to a submarine cable traction device. Background Art

[0002] With the development of clean energy such as tidal energy, wind energy, and solar energy, submarine cables, as an important medium for power transmission in offshore wind power generation, are particularly important in terms of safety and reliability during installation and laying.

[0003] During cable laying, especially when threading through a submarine pipeline onto a platform, a traction device must be installed at the cable head to pull the cable onto the platform. Due to the high platform height and heavy cable weight, a loose connection between the cable and the traction device can cause the cable to slip. Furthermore, the cable ends must be sealed to prevent water from entering the optical and electrical components of the cable during the pipeline threading process.

[0004] Existing traction devices typically inject glue into the entire internal cavity after the cable end is sealed. After the cable is pulled, the entire cable at the pulling end is cut and discarded. This structure, because the cavity is filled with glue, prevents performance testing of the electrical and optical components within the cable during the pulling process. Summary of the Invention

[0005] The present invention provides a submarine cable traction device, which is used to solve the problem that the existing traction device cannot perform performance detection on the electrical unit and the optical unit of the submarine cable during the process of traction of the submarine cable.

[0006] The present invention provides a submarine cable traction device, comprising: a first cone sleeve, a second cone sleeve, a connecting piece, a sealing assembly and a traction piece;

[0007] The first cone sleeve, the connecting piece and the second cone sleeve are coaxially arranged, the first cone sleeve is connected to the second cone sleeve via the connecting piece, and the connecting piece and the second cone sleeve are detachably connected, and the traction piece is arranged at an end of the second cone sleeve away from the connecting piece;

[0008] The first cone sleeve is used to pass through and seal the submarine cable; the connecting piece is provided with a plurality of through holes, and the plurality of through holes are used to pass through the electrical unit and the optical unit of the submarine cable, and the optical unit is connected to the sealing assembly after passing through the through holes; the second cone sleeve is used to seal the electrical unit and the optical unit.

[0009] According to a submarine cable pulling device provided by the present invention, the first cone sleeve includes a conical shell, a cylindrical shell and a first cover plate;

[0010] The conical shell is coaxially arranged with the cylindrical shell, and the conical shell and the cylindrical shell are detachably connected, and the first cover plate is provided on the end surface of the conical shell facing the cylindrical shell;

[0011] The conical shell is provided with a glue injection hole running through the outer wall and the inner wall thereof, and the glue injection hole is used for injecting glue; the first cover plate is provided with a first through hole, and the first through hole is used for passing the submarine cable.

[0012] According to a submarine cable pulling device provided by the present invention, the submarine cable pulling device further includes a first sealing member;

[0013] One of the conical shell and the cylindrical shell is provided with an annular groove, and the other is provided with an annular protrusion, and the annular groove is adapted to the annular protrusion; the outer wall surface of the annular protrusion is provided with a first annular groove, and the first sealing member is embedded in the first annular groove.

[0014] According to a submarine cable pulling device provided by the present invention, the connecting member includes a connecting ring;

[0015] The connecting ring is provided with the plurality of through holes, and the first mounting holes and the second mounting holes are evenly distributed around the axis of the connecting ring. The connecting ring is connected to the columnar shell through the first mounting hole, and the connecting ring is connected to the second cone sleeve through the second mounting hole.

[0016] According to a submarine cable pulling device provided by the present invention, the connecting member further comprises a sealing gasket and a second cover plate;

[0017] The sealing gasket is sandwiched between the connecting ring and the second cover plate. The second cover plate is connected to the connecting ring. The electrical unit and the optical unit pass through the connecting ring, the sealing gasket and the second cover plate in sequence.

[0018] According to a submarine cable pulling device provided by the present invention, the submarine cable pulling device further includes a second sealing member and a third sealing member;

[0019] A first limiting protrusion is formed on one end of the connecting ring facing the cylindrical housing, the outer wall of the first limiting protrusion is adapted to the inner wall of the cylindrical housing, the outer wall of the first limiting protrusion is provided with a second annular groove, and the second sealing member is embedded in the second annular groove;

[0020] A second limiting protrusion is formed on one end of the connecting ring facing the second cone sleeve, the outer wall surface of the second limiting protrusion is adapted to the inner wall surface of the second cone sleeve, the outer wall surface of the second limiting protrusion is provided with a third annular groove, and the third sealing member is embedded in the third annular groove.

[0021] According to a submarine cable pulling device provided by the present invention, the sealing assembly includes a fiber coil assembly;

[0022] The fiber tray assembly includes a fiber tray and a fiber tray cover plate. The fiber tray has a receiving cavity. The optical unit extends into the receiving cavity after passing through the second cover plate. The fiber tray has an opening for pouring fiber paste. The fiber tray cover plate is used to seal the fiber tray.

[0023] According to a submarine cable pulling device provided by the present invention, the sealing assembly further comprises a conical sealing ring;

[0024] The second cover plate is provided with a tapered hole, the tapered hole is adapted to the tapered sealing ring, the tapered sealing ring is embedded in the tapered hole and adapted to the light unit.

[0025] According to a submarine cable traction device provided by the present invention, the traction member includes a rotating shaft, which is rotatably connected to the second cone sleeve. The end of the rotating shaft away from the connecting member is provided with a traction hole, which is used to connect with the traction equipment.

[0026] According to a submarine cable traction device provided by the present invention, the traction member further comprises a stopper, wherein the stopper is nested in the second cone sleeve and is capable of blocking the second cone sleeve;

[0027] A step hole is provided at one end of the second cone sleeve away from the connecting piece, and a flange is formed at one end of the rotating shaft. One side of the flange conflicts with the bottom surface of the groove of the step hole, and the other side of the flange conflicts with the stopper.

[0028] The submarine cable traction device provided by the present invention has a second cone sleeve that is detachably connected to the connecting piece, and the first cone sleeve is used to seal the submarine cable with glue. The electrical unit and the optical unit of the submarine cable pass through multiple through holes on the connecting piece and then extend into the second cone sleeve. On the premise of achieving submarine cable sealing, the performance of the electrical unit and the optical unit can be detected in real time to ensure the reliability of submarine cable laying. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is an exploded schematic diagram of the submarine cable pulling device provided by the present invention;

[0031] Figure 2 is a cross-sectional schematic diagram of the submarine cable pulling device provided by the present invention;

[0032] Figure 3 It is a structural schematic diagram of the submarine cable traction device provided by the present invention;

[0033] Figure 4 yes Figure 2 A schematic diagram of the structure of the sealing component in FIG.

[0034] Figure 5 yes Figure 2 Schematic diagram of the structure of the sealing component at B;

[0035] Figure numerals: 1: first cone sleeve; 101: conical shell; 102: cylindrical shell; 103: first cover plate; 104: inner cone; 105: first sealing member; 2: connecting member; 201: connecting ring; 202: first fastener; 203: second fastener; 204: sealing gasket; 205: second cover plate; 206: second sealing member; 207: third sealing member; 3: second cone sleeve; 4: sealing assembly; 401: fiber disk; 402: rubber pad; 403: fiber disk cover plate; 404: conical sealing ring; 5: traction member; 501: rotating shaft; 502: stopper; 6: submarine cable; 601: electrical unit; 602: optical unit. DETAILED DESCRIPTION

[0036] 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. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0038] The following combination Figures 1 to 5 A submarine cable pulling device according to an embodiment of the present invention is described.

[0039] like Figure 1 、 Figure 2 and Figure 3As shown, the submarine cable traction device provided by the embodiment of the present invention includes: a first cone sleeve 1, a second cone sleeve 3, a connector 2, a sealing assembly 4 and a traction member 5; the first cone sleeve 1, the connector 2 and the second cone sleeve 3 are coaxially arranged, the first cone sleeve 1 is connected to the second cone sleeve 3 through the connector 2, and the connector 2 and the second cone sleeve 3 are detachably connected, and the traction member 5 is arranged at the end of the second cone sleeve 3 away from the connector 2; the first cone sleeve 1 is used for passing through and sealing the submarine cable 6; the connector 2 is provided with a plurality of through holes, and the plurality of through holes are used for passing through the electrical unit 601 and the optical unit 602 of the submarine cable 6, and the optical unit 602 is connected to the sealing assembly 4 after passing through the through holes; the second cone sleeve 3 is used to seal the electrical unit 601 and the optical unit 602.

[0040] Specifically, the first cone sleeve 1 and the second cone sleeve 3 each form a cavity for accommodating the submarine cable 6. The first cone sleeve 1, connector 2, and second cone sleeve 3 are coaxially arranged, with connector 2 used to connect the first cone sleeve 1 and the second cone sleeve 3. The first cone sleeve 1 has a small end and a large end, with the small end being defined as the first end of the first cone sleeve 1 and the large end being defined as the second end of the first cone sleeve 1. After the submarine cable 6 is inserted through the small end of the first cone sleeve 1, a certain length of the submarine cable outer sheath is stripped, the armored steel wires are separated and cleaned, and after the armored steel wires are cleaned, the inner cone 104 is pressed into the armored steel wires to fix the angle. The electrical unit 601 and optical unit 602 of the submarine cable 6 are passed through the inner cone 104. Insulating sealant is applied to the first end of the first cone sleeve 1 to seal the gap between the opening at the first end of the first cone sleeve 1 and the submarine cable 6, preventing seawater from entering the first cone sleeve 1 through the small end of the first cone sleeve 1.

[0041] The first cone sleeve 1 is provided with a glue injection hole, through which a steel rope fastening glue is injected into the first cone sleeve 1. The steel rope fastening glue is used to bond and secure the armored steel wires to the first cone sleeve 1, ensuring the stability of the connection between the submarine cable 6 and the first cone sleeve 1. After the steel rope fastening glue solidifies, the glue injection hole is sealed with a plug. The connector 2 is provided with multiple through-holes, the number of which is the same as the number of electrical units 601 and optical units 602. For example, if the number of electrical units 601 in the submarine cable 6 is three and the number of optical units 602 is one, the connector 2 has four through-holes.

[0042] The submarine cable 6 is inserted through the first cone sleeve 1. After sealing the submarine cable 6 within the first cone sleeve 1, the connector 2 is placed at the second end of the first cone sleeve 1. The electrical unit 601 and the optical unit 602 are inserted through the through-holes in the connector 2. After passing through the connector 2, the electrical unit 601 is insulated and waterproofed, possibly with cable grease. The optical unit 602, after passing through the connector 2, is connected to the sealing assembly 4, which prevents moisture from penetrating the optical unit 602. After waterproofing the electrical unit 601 and the optical unit 602 through the connector 2, the second cone sleeve 3 is placed at the other end of the connector 2. After aligning the second cone sleeve 3 with the connector 2, they are fastened together with fasteners, with the electrical unit 601 and the optical unit 602 located within the sealed chamber of the second cone sleeve 3. A traction member 5 is mounted at the end of the second cone sleeve 3 away from the connector 2. The traction member 5 has a traction hole that connects to the traction equipment.

[0043] The submarine cable 6 is sealed with glue at the first cone sleeve 1. The electrical unit 601 and optical unit 602 of the submarine cable 6 are arranged in intervals in the sealed chamber of the second cone sleeve 3 after passing through multiple through holes on the connector 2. The second cone sleeve 3 is detachably connected to the connector 2. During the laying process of the submarine cable 6, if it is necessary to perform a performance test on the electrical unit 601 and the optical unit 602, the second cone sleeve 3 is removed from the connector 2 to test the performance of the electrical unit 601 and the optical unit 602. After the test is complete, the second cone sleeve 3 is assembled with the connector 2, and the laying of the submarine cable 6 can continue. The submarine cable traction device with this structure can detect the performance of the electrical unit 601 and the optical unit 602 in real time as needed during the laying process of the submarine cable 6, thereby ensuring the reliability of the laying of the submarine cable 6.

[0044] In an embodiment of the present invention, the second cone sleeve 3 is detachably connected to the connector 2, and the first cone sleeve 1 is used to seal the submarine cable 6 with glue. The electrical unit 601 and the optical unit 602 of the submarine cable 6 pass through multiple through holes on the connector 2 and extend into the second cone sleeve 3. On the premise of achieving sealing of the submarine cable 6, the performance of the electrical unit 601 and the optical unit 602 can be detected in real time to ensure the reliability of the laying of the submarine cable 6.

[0045] like Figure 2 As shown, in an optional embodiment, the first cone sleeve 1 includes a conical shell 101, a cylindrical shell 102 and a first cover plate 103; the conical shell 101 and the cylindrical shell 102 are coaxially arranged, the conical shell 101 and the cylindrical shell 102 are detachably connected, and the first cover plate 103 is covered on the end face of the conical shell 101 facing the cylindrical shell 102; the conical shell 101 is provided with a glue injection hole passing through its outer wall and inner wall, and the glue injection hole is used for glue injection; the first cover plate 103 is provided with a first through hole, and the first through hole is used to pass the submarine cable 6.

[0046] Specifically, the first cone sleeve 1 includes a conical shell 101 and a cylindrical shell 102. The conical shell 101 has a small end and a large end. The small end of the conical shell 101 is defined as the first end of the conical shell 101, and the large end of the conical shell 101 is defined as the second end of the conical shell 101. The second end of the conical shell 101 is connected to the first end of the cylindrical shell 102. The conical shell 101 is provided with glue injection holes that pass through the outer wall and the inner wall of the conical shell 101. The second end of the conical shell 101 is provided with through holes uniformly distributed circumferentially around the axis of the conical shell 101. The first end of the cylindrical shell 102 is provided with threaded holes uniformly distributed circumferentially around the axis of the cylindrical shell 102. Fasteners are sequentially inserted through the through holes of the conical shell 101 and the threaded holes of the cylindrical shell 102 to achieve the connection between the conical shell 101 and the cylindrical shell 102. The fasteners can be screws.

[0047] The first cover plate 103 is provided with a first through-hole for inserting the electrical unit 601 and optical unit 602 of the submarine cable 6. After the submarine cable 6 is inserted through the first end of the conical shell 101 and the electrical unit 601 and optical unit 602 are separated, the armored steel wires are compressed using the inner cone 104. After the electrical unit 601 and optical unit 602 pass through the first through-hole of the first cover plate 103, the first cover plate 103 is aligned with the end surface of the second end of the conical shell 101, and fasteners secure the first cover plate 103 to the end surface of the conical shell 101. The first cover plate 103 is used to seal the gap between the second end of the conical shell 101 and the submarine cable 6, facilitating the injection of glue into the conical shell 101. After the steel cable tightening glue solidifies, the injection hole is sealed with a plug. The end of the plug facing the inside of the conical shell 101 is equipped with a sealing ring to effectively prevent seawater from entering the conical shell 101 through the injection hole.

[0048] Thus, a first sealed chamber is formed between the first cover plate 103 and the conical shell 101, and a second sealed chamber is formed between the first cover plate 103, the cylindrical shell 102 and the connector 2, thereby achieving sealing and fixation of the submarine cable 6, and also facilitating the separation of the electrical unit 601 and the optical unit 602, which is beneficial to the convenience of operation.

[0049] In an embodiment of the present invention, the second end of the conical shell 101 is connected to the first end of the cylindrical shell 102 by fasteners, and the first cover plate 103 is covered on the end face of the conical shell 101 facing the cylindrical shell 102. The electrical unit 601 and the optical unit 602 pass through the first through hole and extend into the cylindrical shell 102, which is conducive to the glue-filling fixation of the submarine cable 6 and the separation of the electrical unit 601 and the optical unit 602 from the glue-filled part of the submarine cable 6, which is conducive to the convenience of operation.

[0050] like Figure 2As shown, in an optional embodiment, the submarine cable traction device also includes a first seal 105; one of the conical shell 101 and the cylindrical shell 102 is provided with an annular groove, and the other is provided with an annular protrusion, and the annular groove is adapted to the annular protrusion; the outer wall surface of the annular protrusion is provided with a first annular groove, and the first seal 105 is embedded in the first annular groove.

[0051] Specifically, an annular groove is formed at the second end of the conical housing 101, and an annular protrusion is formed at the first end of the cylindrical housing 102. The annular groove and the annular protrusion are adapted to each other, and the outer wall of the annular protrusion is in contact with the inner wall of the annular groove. The outer wall of the annular protrusion is provided with a first annular groove, the number and size of which are set according to actual needs. For example, if there are two first annular grooves and the first sealing member 105 is an O-ring, this O-ring is defined as the first sealing ring, and the number of first sealing rings is two.

[0052] When assembling the conical housing 101 and the cylindrical housing 102, the two first sealing rings are respectively placed on the two first annular grooves, and the annular protrusion is then placed in contact with the annular groove. The first sealing ring is sandwiched between the outer wall of the annular protrusion and the inner wall of the annular groove. Fasteners are then passed through the through hole of the conical housing 101 and the threaded hole of the cylindrical housing 102 to connect the conical housing 101 and the cylindrical housing 102. The first sealing ring can effectively prevent moisture from penetrating into the first cone sleeve 1 through the assembly gap between the conical housing 101 and the cylindrical housing 102, thereby ensuring the reliability of the submarine cable 6.

[0053] In an embodiment of the present invention, an annular groove is formed at the second end of the conical shell 101, and an annular protrusion is formed at the first end of the cylindrical shell 102. The outer wall surface of the annular protrusion is fitted with the inner wall surface of the annular groove, and the first sealing member 105 is embedded in the first annular groove of the annular protrusion, which can effectively prevent water vapor from penetrating into the first cone sleeve 1 along the assembly gap between the conical shell 101 and the cylindrical shell 102, thereby ensuring the reliability of the submarine cable 6.

[0054] like Figure 2 As shown, in an optional embodiment, the connecting member 2 includes a connecting ring 201; the connecting ring 201 is provided with a plurality of through holes, and the first mounting holes and the second mounting holes are evenly distributed around the axis of the connecting ring 201 in an circumferential direction at intervals, the connecting ring 201 is connected to the cylindrical shell 102 through the first mounting hole, and the connecting ring 201 is connected to the second cone sleeve 3 through the second mounting hole.

[0055] Specifically, connecting ring 201 is an annular body with multiple through-holes defined in its central region. The number and size of the through-holes match the number and size of electrical unit 601 and optical unit 602. Multiple first mounting holes and multiple second mounting holes are evenly distributed circumferentially around the axis of connecting ring 201, with the first and second mounting holes spaced apart.

[0056] For example, there are twelve first mounting holes, which are plain holes. The second end of the cylindrical housing 102 has twelve threaded holes evenly distributed circumferentially around the axis of the cylindrical housing 102. The first mounting holes and the threaded holes correspond one-to-one. The first fastener 202 penetrates the first mounting holes and the threaded holes at the second end of the cylindrical housing 102 to connect the connecting ring 201 to the cylindrical housing 102. The first fastener 202 can be a screw. There are twelve second mounting holes, which are threaded holes. The first end of the second cone sleeve 3 has twelve through holes evenly distributed circumferentially around the axis of the second cone sleeve 3. The second mounting holes and the through holes correspond one-to-one. The second fastener 203 penetrates the through holes at the first end of the second cone sleeve 3 and the second mounting holes to connect the second cone sleeve 3 to the connecting ring 201. The second fastener 203 can be a screw. The first cone sleeve 1, the second cone sleeve 3, and the connecting ring 201 are all made of stainless steel.

[0057] In an embodiment of the present invention, the connecting ring 201 is provided with a plurality of through holes, and the plurality of through holes are used to pass through the electrical unit 601 and the optical unit 602. A plurality of first mounting holes and second mounting holes are evenly distributed in a circumferential direction around the axis of the connecting ring 201. The first mounting hole is a through hole, and the cylindrical shell 102 is provided with a threaded hole matching the first mounting hole; the second mounting hole is a threaded hole, and the second conical sleeve 3 is provided with a through hole matching the second mounting hole, thereby realizing a detachable connection between the connecting ring 201 and the cylindrical shell 102 and a detachable connection between the connecting ring 201 and the second conical sleeve 3, which is conducive to the convenience of installation and disassembly.

[0058] like Figure 2 As shown, in an optional embodiment, the connector 2 further includes a sealing gasket 204 and a second cover plate 205; the sealing gasket 204 is clamped between the connecting ring 201 and the second cover plate 205, the second cover plate 205 is connected to the connecting ring 201, and the electrical unit 601 and the optical unit 602 are sequentially passed through the connecting ring 201, the sealing gasket 204 and the second cover plate 205.

[0059] Specifically, the sealing gasket 204 can be made of marine-grade polyurethane. An annular groove is formed by recessing the end of the connecting ring 201 facing the second cone sleeve 3 toward the end of the connecting ring 201 facing the first cone sleeve 1. The sealing gasket 204 nests within the annular groove of the connecting ring 201. The outer wall of the sealing gasket 204 and the groove wall of the annular groove can form a transition fit or an interference fit. It is understood that the sealing gasket 204 also has through-holes for the electrical unit 601 and the optical unit 602 to pass through, and the second cover plate 205 also has through-holes for the electrical unit 601 and the optical unit 602 to pass through. After the electrical unit 601 and the optical unit 602 are sequentially passed through the connecting ring 201, the sealing gasket 204, and the second cover plate 205, the second cover plate 205 is connected to the connecting ring 201 using fasteners, which can be screws.

[0060] A third sealed chamber is formed between the connector 2 and the second cone sleeve 3, and the electrical unit 601 and the optical unit 602 are located in the third sealed chamber. The sealing gasket 204 is clamped between the connecting ring 201 and the second cover plate 205, which can effectively prevent water vapor from penetrating into the third sealed chamber from the second sealed chamber of the first cone sleeve 1, effectively preventing water from entering the electrical unit 601 and the optical unit 602, and ensuring the reliability of the submarine cable 6.

[0061] In an embodiment of the present invention, the sealing gasket 204 is sandwiched between the connecting ring 201 and the second cover plate 205, which can effectively prevent water vapor from penetrating from the second sealed chamber of the first cone sleeve 1 into the third sealed chamber, effectively prevent water from entering the electrical unit 601 and the optical unit 602, and ensure the reliability of the submarine cable 6.

[0062] like Figure 2 As shown, in an optional embodiment, the submarine cable 6 traction device also includes a second seal 206 and a third seal 207; a first limiting protrusion is formed on the end of the connecting ring 201 facing the cylindrical shell 102, and the outer wall surface of the first limiting protrusion is adapted to the inner wall surface of the cylindrical shell 102, and the outer wall surface of the first limiting protrusion is provided with a second annular groove, and the second seal 206 is embedded in the second annular groove; a second limiting protrusion is formed on the end of the connecting ring 201 facing the second cone sleeve 3, and the outer wall surface of the second limiting protrusion is adapted to the inner wall surface of the second cone sleeve 3, and the outer wall surface of the second limiting protrusion is provided with a third annular groove, and the third seal 207 is embedded in the third annular groove.

[0063] Specifically, a first limiting protrusion is formed on the first end of the connecting ring 201 facing the cylindrical housing 102, and the outer wall of the first limiting protrusion is arranged in abutment with the inner wall of the cylindrical housing 102. A second limiting protrusion is formed on the second end of the connecting ring 201 facing the second cone sleeve 3, and the outer wall of the second limiting protrusion is arranged in abutment with the inner wall of the second cone sleeve 3. The outer wall of the first limiting protrusion is provided with a second annular groove around the axis of the connecting ring 201, and the number of the second annular grooves is one or more. The outer wall of the second limiting protrusion is provided with a third annular groove around the axis of the connecting ring 201, and the number of the third annular grooves is one or more.

[0064] For example, if there are two second annular grooves and the second sealing member 206 is an O-ring, this O-ring is defined as the second sealing ring, and the number of second sealing rings is two. For example, if there are two third annular grooves and the third sealing member 207 is an O-ring, this O-ring is defined as the third sealing ring, and the number of third sealing rings is two.

[0065] When assembling the connecting ring 201 and the cylindrical housing 102, the two second sealing rings are sleeved onto the two second annular grooves, and the first limiting protrusion of the connecting ring 201 is then placed in abutment with the cylindrical housing 102. The second sealing ring is sandwiched between the outer wall of the first limiting protrusion and the inner wall of the cylindrical housing 102. The fasteners are then passed through the first mounting hole of the connecting ring 201 and the threaded hole of the cylindrical housing 102 to achieve the connection between the connecting ring 201 and the cylindrical housing 102. When assembling the connecting ring 201 and the second cone sleeve 3, the two third sealing rings are sleeved onto the two third annular grooves, and the second cone sleeve 3 is then placed in abutment with the second limiting protrusion. The third sealing ring is sandwiched between the outer wall of the second limiting protrusion and the inner wall of the second cone sleeve 3. The fasteners are then passed through the through hole of the second cone sleeve 3 and the second mounting hole of the connecting ring 201 to achieve the connection between the second cone sleeve 3 and the connecting ring 201.

[0066] The second sealing ring effectively prevents moisture from penetrating the second sealed chamber through the gap between the cylindrical housing 102 and the connecting ring 201. The third sealing ring effectively prevents moisture from penetrating the third sealed chamber through the gap between the connecting ring 201 and the second cone sleeve 3. The first sealing ring effectively prevents moisture from penetrating the first sealed chamber through the gap between the conical housing 101 and the cylindrical housing 102. Thus, the first sealing element 105, the second sealing element 206, and the third sealing element 207 effectively prevent seawater from entering the interior of the submarine cable 6 traction device. The sealing ring and gasket in the present invention can both be made of marine-grade polyurethane.

[0067] In the embodiment of the present invention, the first seal 105, the second seal 206 and the third seal 207 can effectively prevent seawater from entering the interior of the submarine cable traction device, improve the sealing performance of the submarine cable traction device, and ensure the reliability of the submarine cable 6.

[0068] like Figure 2 and Figure 5 As shown, in an optional embodiment, the sealing assembly 4 includes a fiber disc assembly; the fiber disc assembly includes a fiber disc 401 and a fiber disc cover 403, the fiber disc 401 has a receiving cavity, and the optical unit 602 extends into the receiving cavity after passing through the second cover 205; the fiber disc 401 has an opening, and the opening is used for pouring fiber paste; the fiber disc cover 403 is used to seal the fiber disc 401.

[0069] Specifically, the fiber tray 401 assembly includes a protective tube, the fiber tray 401, and a fiber tray cover 403. The fiber tray 401 can be a circular or rectangular body, and has a receiving cavity. For example, the fiber tray 401 is a hollow rectangular body with an opening. One end of the fiber tray 401 is connected to the second cover 205 via the protective tube. The optical unit 602 passes through the second cover 205 and the protective tube and enters the fiber tray 401. After the optical fiber is coiled in the fiber tray 401, fiber paste is poured into the fiber tray 401 through the opening of the fiber tray 401. The fiber paste can prevent moisture from penetrating into the optical fiber to a limited extent, and can also alleviate the effects of external vibration or impact on the performance of the optical fiber. After the fiber paste is poured, the rubber pad 402 and the fiber tray cover 403 are placed in sequence at the opening of the fiber tray 401, and the fiber tray cover 403 and the fiber tray 401 are connected by fasteners.

[0070] In the embodiment of the present invention, the optical unit 602 is housed and sealed by the fiber tray assembly, which can effectively prevent moisture from penetrating into the optical unit 602 .

[0071] like Figure 2 and Figure 4 As shown, in an optional embodiment, the sealing assembly 4 further includes a conical sealing ring 404 ; the second cover plate 205 is provided with a conical hole, the conical hole is adapted to the conical sealing ring 404 , the conical sealing ring 404 is embedded in the conical hole, and adapted to the light unit 602 .

[0072] Specifically, the second cover plate 205 has a tapered hole that mates with the tapered sealing ring 404. The inner diameter of the tapered sealing ring 404 matches the outer diameter of the optical unit 602. The tapered sealing ring 404 is inserted into the tapered hole, and the optical unit 602 passes through the tapered sealing ring 404 and connects to the fiber tray assembly. The tapered structure of the tapered sealing ring 404 effectively prevents moisture from seeping into the interior of the submarine cable 6 through the gap between the fiber tray assembly and the second cover plate 205.

[0073] In the embodiment of the present invention, the conical sealing ring 404 can effectively prevent moisture from penetrating into the interior of the submarine cable 6 through the gap between the fiber coil assembly and the second cover plate 205 , further ensuring the reliability of the submarine cable 6 .

[0074] like Figure 1 、 Figure 2 and Figure 3 As shown, in an optional embodiment, the traction member 5 includes a rotating shaft 501, which is rotatably connected to the second cone sleeve 3, and a traction hole is provided at one end of the rotating shaft 501 away from the connecting member 2, and the traction hole is used to connect with the traction equipment.

[0075] Specifically, a shaft hole is formed at the second end of the second cone sleeve 3, and a rotating shaft 501 is rotatably connected to the second end of the second cone sleeve 3. A portion of the rotating shaft 501 is located outside the second cone sleeve 3. The section of the rotating shaft 501 located outside the second cone sleeve 3 is provided with a traction hole for connecting to a traction device. When the submarine cable 6 is towed by the submarine cable traction device, the tensile force during the traction process causes the submarine cable 6 to twist. The rotating shaft 501 is rotatably connected to the second cone sleeve 3 and can rotate relative to the second cone sleeve 3, thereby achieving detwisting of the submarine cable 6, effectively preventing the submarine cable 6 from breaking during the traction process.

[0076] In an embodiment of the present invention, the rotating shaft 501 is rotatably connected to the second cone sleeve 3. A traction hole is provided on the rotating shaft 501. The submarine cable traction device is towed through the traction hole. The rotating shaft 501 can rotate relative to the second cone sleeve 3, thereby realizing the detwisting of the submarine cable 6, and having the detwisting function while traction.

[0077] like Figure 2 As shown, in an optional embodiment, the traction member 5 also includes a stop member 502, which is nested in the second cone sleeve 3 and can block the second cone sleeve 3; the second cone sleeve 3 is provided with a step hole at one end facing away from the connecting member 2, and a flange is formed at one end of the rotating shaft 501, one side of the flange is in conflict with the bottom surface of the groove of the step hole, and the other side of the flange is in conflict with the stop member 502.

[0078] Specifically, the second end of the second cone sleeve 3 is provided with an axial hole. This axial hole is a stepped hole comprising a groove and a through hole that are sequentially connected. The inner diameter of the groove is larger than the diameter of the through hole. A flange is formed on one end of the rotating shaft 501, and a traction hole is provided on the other end of the rotating shaft 501. The outer wall of the stopper 502 is aligned with the inner wall of the second cone sleeve 3, and the end of the stopper 502 facing away from the connecting ring 201 is designed to contact the rotating shaft 501.

[0079] When installing the traction member 5, the rotating shaft 501 is first passed through the shaft hole, with the flange of the rotating shaft 501 contacting the bottom surface of the groove. The stopper 502 is then installed within the second cone sleeve 3. The end surface of the stopper 502 facing away from the connector 2 contacts the end surface of the flange of the rotating shaft 501, and the outer wall of the stopper 502 engages the inner wall of the second cone sleeve 3. The stopper 502 and the second cone sleeve 3 are connected via fasteners. The portion of the rotating shaft 501 located within the shaft hole has a clearance fit within the shaft hole. The other end of the rotating shaft 501 is provided with a traction hole for connection to the traction equipment. The rotating shaft 501 can rotate 360 ​​degrees relative to the axis of the shaft hole, effectively preventing the submarine cable 6 from twisting during the traction process. It is also less susceptible to collisions and has high reliability. Conventional traction devices typically include an external detwist device, which can be damaged by collisions during traction, rendering the detwist device inoperable.

[0080] In an embodiment of the present invention, a stepped hole is provided at the second end of the second cone sleeve 3, and the rotating shaft 501 passes through the stepped hole, and the two sides of the flange of the rotating shaft 501 respectively conflict with the bottom surface of the groove of the stepped hole and the end surface of the stopper 502, and the outer wall surface of the flange of the rotating shaft 501 conflicts with the groove wall surface of the stepped hole. The rotating shaft 501 can be rotated within a range of 360 degrees, thereby realizing the back-twisting of the submarine cable 6. The structure is simple and the use is reliable.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A submarine cable pulling device, characterized in that: include: A first cone sleeve, a second cone sleeve, a connecting piece, a sealing assembly and a traction piece; The first cone sleeve, the connecting piece and the second cone sleeve are coaxially arranged, the first cone sleeve is connected to the second cone sleeve via the connecting piece, and the connecting piece and the second cone sleeve are detachably connected, and the traction piece is arranged at an end of the second cone sleeve away from the connecting piece; The first cone sleeve is used to pass through and seal the submarine cable. The first cone sleeve includes a conical shell, a cylindrical shell and a first cover plate. The conical shell is coaxially arranged with the cylindrical shell and is detachably connected to the cylindrical shell. The first cover plate is provided on the end surface of the conical shell facing the cylindrical shell. The conical shell is provided with a glue injection hole running through the outer wall and the inner wall thereof, and the glue injection hole is used for glue injection. The first cover plate is provided with a first through hole, and the first through hole is used to pass the submarine cable. The connecting member is provided with a plurality of through holes, and the plurality of through holes are used to pass through the electrical unit and the optical unit of the submarine cable, and the optical unit is connected to the sealing assembly after passing through the through holes; the second cone sleeve is used to seal the electrical unit and the optical unit; When the second cone sleeve is detached from the connector, the performance of the electrical unit and the optical unit is tested.

2. The submarine cable pulling device according to claim 1, characterized in that: The submarine cable pulling device further includes a first sealing member; One of the conical shell and the cylindrical shell is provided with an annular groove, and the other is provided with an annular protrusion, and the annular groove is adapted to the annular protrusion; the outer wall surface of the annular protrusion is provided with a first annular groove, and the first sealing member is embedded in the first annular groove.

3. The submarine cable pulling device according to claim 1, characterized in that: The connecting member includes a connecting ring; The connecting ring is provided with the plurality of through holes, and the first mounting holes and the second mounting holes are evenly distributed around the axis of the connecting ring. The connecting ring is connected to the columnar shell through the first mounting hole, and the connecting ring is connected to the second cone sleeve through the second mounting hole.

4. The submarine cable pulling device according to claim 3, characterized in that: The connecting member further comprises a sealing gasket and a second cover plate; The sealing gasket is sandwiched between the connecting ring and the second cover plate. The second cover plate is connected to the connecting ring. The electrical unit and the optical unit pass through the connecting ring, the sealing gasket and the second cover plate in sequence.

5. The submarine cable pulling device according to claim 3, characterized in that: The submarine cable pulling device further includes a second sealing member and a third sealing member; A first limiting protrusion is formed on one end of the connecting ring facing the cylindrical housing, the outer wall of the first limiting protrusion is adapted to the inner wall of the cylindrical housing, the outer wall of the first limiting protrusion is provided with a second annular groove, and the second sealing member is embedded in the second annular groove; A second limiting protrusion is formed on one end of the connecting ring facing the second cone sleeve, the outer wall surface of the second limiting protrusion is adapted to the inner wall surface of the second cone sleeve, the outer wall surface of the second limiting protrusion is provided with a third annular groove, and the third sealing member is embedded in the third annular groove.

6. The submarine cable pulling device according to claim 4, characterized in that: The sealing assembly includes a fiber disc assembly; The fiber tray assembly includes a fiber tray and a fiber tray cover plate. The fiber tray has a receiving cavity. The optical unit extends into the receiving cavity after passing through the second cover plate. The fiber tray has an opening for pouring fiber paste. The fiber tray cover plate is used to seal the fiber tray.

7. The submarine cable pulling device according to claim 6, characterized in that: The sealing assembly also includes a conical sealing ring; The second cover plate is provided with a tapered hole, the tapered hole is adapted to the tapered sealing ring, the tapered sealing ring is embedded in the tapered hole and adapted to the light unit.

8. The submarine cable pulling device according to claim 1, characterized in that: The traction member includes a rotating shaft, which is rotatably connected to the second cone sleeve. An end of the rotating shaft away from the connecting member is provided with a traction hole, and the traction hole is used to connect with the traction equipment.

9. The submarine cable pulling device according to claim 8, characterized in that: The traction member further includes a stopper, which is nested in the second cone sleeve and can block the second cone sleeve; A step hole is provided at one end of the second cone sleeve away from the connecting piece, and a flange is formed at one end of the rotating shaft. One side of the flange conflicts with the bottom surface of the groove of the step hole, and the other side of the flange conflicts with the stopper.

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