Protection device for guiding submarine cable to penetrate through wall

Abstract

The utility model discloses a protection device for guiding a submarine cable to penetrate through a wall, which comprises a sleeve, a barb anti-falling assembly arranged on the outer side wall of the sleeve, a traction seat arranged at the front end of the sleeve and a traction head, the traction seat is connected with the sleeve through a first connecting piece capable of being pulled apart, and a submarine cable connecting piece capable of being connected with the submarine cable is arranged on the traction seat. A hanging connecting piece is arranged on the traction head, and the traction head is connected with the front end of the traction seat through a universal joint. The universal joint is arranged between the traction head and the traction seat, so that the traction head can flexibly rotate relative to the traction seat, the traction head can be easily pulled into the fan tower even if the allowance of a hole position for a submarine cable to pass through on the fan tower is very small, and the construction efficiency can be conveniently improved.

Description

Technical Field

[0001] The utility model relates to the technical field of submarine cables, in particular to a protective device for guiding a submarine cable to pass through a wall. Background Art

[0002] In recent years, offshore power plants have been vigorously developed at home and abroad. As a medium for offshore power transmission, submarine cables are increasingly used in offshore power plants.

[0003] During the construction of offshore wind power generation and submarine cable connection, a tugboat is needed to tow the submarine cable to the vicinity of the wind turbine tower, and then a hook is led out from the wind turbine tower to hook the guide head at the front end of the submarine cable. During this period, the submarine cable needs to pass through the fixed hole at the fixed end on land, and then the hook pulls the guide head obliquely upward through the side wall of the wind turbine tower and enters the interior of the tower.

[0004] When the cable is inserted into the wind turbine tower, the guide head needs to be fixed to the wind turbine tower to prevent the submarine cable from bending in the mud section, so a barbed perforation device is required. Publication No. CN 219874975U discloses such a submarine cable barbed wall protection device. Figure 1 This is the attached drawing of the patent. When the device is used in engineering, the submarine cable is inserted into the barbed perforation device, connected by a guide head and a steel wire rope, and the device and the submarine cable are dragged into the tower. The caliper clamps the inner wall of the tower in a barbed hook shape. After it is firmly fixed, the tail anti-bending device prevents the submarine cable from bending. Such a device also has the following problems. First, the margin of the hole on the wind turbine tower for the submarine cable to pass through is very small, and it is generally set at a 45-degree tilt. When the guide head enters the hole, due to the pull of the gravity of the submarine cable, its tilt angle is difficult to adapt to the tilt angle of the hole, resulting in multiple attempts to pull the traction head and the submarine cable into the interior of the wind turbine tower, which is time-consuming and laborious; second, the submarine cable barb-type wall-penetrating protection device includes a rear anti-bending device, a basic connecting seat, a basic body, a basic groove, a barb tooth, a tooth bolt, a connecting bolt and a front anti-bending device. With such a design, the front anti-bending device and the rear anti-bending device are respectively connected to the front and rear ends of the basic body, and the lengths of the two anti-bending sections are fixed, and the lengths of the front and rear anti-bending devices cannot be adjusted according to actual conditions. Utility Model Content

[0005] In view of this, an object of the utility model is to provide a protective device for guiding a submarine cable through a wall, which is convenient for improving construction efficiency.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A protective device for guiding a submarine cable through a wall, comprising a casing, a barb anti-drop assembly arranged on the outer wall of the casing, a traction seat arranged at the front end of the casing, and a traction head, wherein the traction seat and the casing are connected by a first breakable connecting piece, the traction seat is provided with a submarine cable connecting piece that can be connected to the submarine cable, the traction head is provided with a hanging connecting piece, and the traction head is connected to the front end of the traction seat by a universal joint.

[0008] In a preferred embodiment of the present invention, the universal joint comprises a joint cavity arranged on the traction seat, and a joint head arranged on the traction head and located in the joint cavity, wherein the joint head is provided with a joint arc surface rotatably matched with the inner wall of the joint cavity.

[0009] In a preferred embodiment of the present invention, a front end of the traction seat is provided with a front port connected to the joint cavity, the traction head also includes a conical head located outside the traction seat and a connecting rod connected between the conical head and the joint head, the traction seat is provided with a first curved surface arranged around the front port, and the conical head has a second curved surface that rotates with the first curved surface.

[0010] In a preferred embodiment of the present invention, the joint arc surface, the first arc surface and the second arc surface are all spherical arc surfaces, and the outer side surface of the traction seat is a conical surface with a diameter gradually decreasing from front to back.

[0011] In a preferred embodiment of the present invention, a hanging rope groove is provided at the front end of the conical head, and the hanging connecting member is a hanging rod arranged in the hanging rope groove.

[0012] In a preferred embodiment of the present invention, the sleeve comprises an elastic sleeve body and a metal pipe head arranged at the front end of the sleeve body, the traction seat is a metal piece, and the traction seat has a sleeve shell portion sleeved on the front end of the metal pipe head.

[0013] In a preferred embodiment of the present invention, the first connecting member is a self-breaking bolt, and the submarine cable connecting member includes a cross bar fixed inside the traction seat, and a hook connected to the cross bar.

[0014] In a preferred embodiment of the present invention, the barb anti-detachment assembly includes at least two splints, the inner side surfaces of the splints are in contact with the outer side surfaces of the sleeve, all the splints are spliced ​​to form a tubular structure, adjacent splints are connected by threaded fasteners so that the gap width between each splint is adjustable, a ratchet rod is provided on the outer side wall of the splint, the front end of the ratchet rod is hinged to the splint, the rear end of the ratchet rod is tilted backward, and an elastic member is provided between the ratchet rod and the splint, which can apply elastic force to the ratchet rod to keep the ratchet rod in an expanded state.

[0015] In a preferred embodiment of the present invention, a receiving groove capable of accommodating the ratchet rod is provided on the outer wall of the splint, and the elastic member is an elastic rubber member provided in the receiving groove, one end of the elastic rubber member abuts against the bottom surface of the receiving groove, and the other end abuts against the inner side surface of the ratchet rod.

[0016] In a preferred embodiment of the present invention, a tapered external thread is provided on the outer side wall of one end of the tubular structure, and a limiting nut meshing with the tapered external thread is sleeved on the rear end of the tubular structure.

[0017] The beneficial effects of the utility model are:

[0018] 1. A universal joint is set between the traction head and the traction seat, so that the traction head can be flexibly rotated relative to the traction seat. Even if the margin of the hole for the submarine cable to pass through on the wind turbine tower is very small, when the traction head enters the hole, the traction head can be rotated to a direction that matches the hole on the wind turbine tower under the pulling force of the crane inside the wind turbine tower. Then the crane continues to pull and pulls the traction head through the hole on the wind turbine tower. After the traction head passes through, the traction seat and submarine cable behind it can be smoothly pulled into the interior of the wind turbine tower, which is convenient and quick. In addition, the setting of the universal joint can avoid large bending stress between the traction head and the traction seat, which is conducive to improving the service life.

[0019] 2. The device can be used to carry the submarine cable into the wind turbine tower to protect the submarine cable during installation and use.

[0020] 3. The parts of the casing exposed on both sides of the barb anti-detachment assembly can be bent to a certain extent, and the submarine cable inside can be protected by this bending, so that the bent part of the submarine cable can have a smooth transition, and the turning radius of the bent part is prevented from being too small. In addition, the protective device for guiding the submarine cable through the wall of the utility model can axially adjust the position of the barb anti-detachment assembly as needed, and then adjust the length of the parts of the casing exposed on both sides of the barb anti-detachment assembly.

[0021] 4. The utility model is used for guiding the submarine cable through the wall protection device, the barbed anti-drop assembly is sleeved on the outside of the casing, and can be made into multiple sections to prevent bending and retreat. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an existing submarine cable barb-type wall-penetrating protection device;

[0023] Figure 2 It is a schematic diagram of the appearance structure of the utility model;

[0024] Figure 3 It is a cross-sectional view of the utility model;

[0025] Figure 4 yes Figure 3 A magnified view of part A;

[0026] Figure 5 It is the cross section where the barbed anti-drop assembly is located;

[0027] Figure 6 It is a schematic diagram of the structure when the casing is stuck on the wind turbine tower through the barbed anti-drop assembly. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0029] It should be noted that all directional indications in the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the descriptions of "preferred", "sub-preferred", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "preferred" or "sub-preferred" may explicitly or implicitly include at least one such feature.

[0030] Reference Figures 2 to 6 The utility model proposes a protective device for guiding a submarine cable to pass through a wall, comprising a casing 1 for the submarine cable to pass through, a barbed anti-drop assembly arranged on the outer wall of the casing 1, a traction seat 2 arranged at the front end of the casing 1, and a traction head 3, the traction seat 2 and the casing 1 are connected by a first connecting piece 4 that can be broken, the traction seat 2 is provided with a submarine cable connecting piece 5 that can be connected to the submarine cable, the traction head 3 is provided with a hanging connecting piece 35, and the traction head 3 is connected to the front end of the traction seat 2 through a universal joint.

[0031] A universal joint is arranged between the traction head 3 and the traction seat 2, so that the traction head 3 can be flexibly rotated relative to the traction seat 2. Even if the margin of the hole on the wind turbine tower 9 for the submarine cable to pass through is very small, when the traction head 3 enters the hole, the traction head 3 can be rotated to a direction compatible with the hole on the wind turbine tower 9 under the pulling force of the crane in the wind turbine tower 9, and then the crane continues to pull, and the traction head 3 can be pulled through the hole on the wind turbine tower 9. After the traction head 3 passes through, the traction seat 2 and the submarine cable behind it can be smoothly pulled into the interior of the wind turbine tower 9. In this process, the barb anti-detachment component will clamp the casing 1 on the wind turbine tower 9, and then the first connecting piece 4 between the traction seat 2 and the casing 1 will be broken.

[0032] In a preferred embodiment of the present invention, the universal joint comprises a joint cavity 21 arranged on the traction seat 2, and a joint head 31 arranged on the traction head 3 and located in the joint cavity 21, and a joint arc surface 311 is arranged on the joint head 31 to rotate with the inner wall of the joint cavity 21. A front end of the traction seat 2 is provided with a front port 201 connected with the joint cavity 21, and the traction head 3 also comprises a conical head 32 located outside the traction seat 2 and a connecting rod 33 connected between the conical head 32 and the joint head 31, and a first arc surface 202 arranged around the front port 201 is provided on the traction seat 2, and a second arc surface 302 is provided on the conical head 32 to rotate with the first arc surface 202.

[0033] Preferably, the joint head 31 is a sphere, a hemisphere, or a structure formed by cutting off a piece of a sphere, and the joint arc surface 311, the first arc surface 202, and the second arc surface 302 are all spherical arc surfaces. With such a design, the conical head 32 and the traction seat 2, and the joint head 31 and the traction seat 2 are all rotationally matched, which can increase the contact area of ​​the rotational match, reduce stress concentration, and increase the service life. Furthermore, the outer side surface of the traction seat 2 is a conical surface with a gradually decreasing diameter from front to back.

[0034] Reference Figure 4 In one embodiment, a rope groove 321 is provided at the front end of the conical head 32, and the hanging connector 35 is a hanging rod provided in the rope groove 321. When installing the submarine cable, the hook of the crane on the wind turbine tower 9 hooks the hanging rod, and the submarine cable can be pulled to move until the installation is completed.

[0035] In one embodiment, the sleeve 1 includes an elastic sleeve body 11, a metal pipe head 12 disposed at the front end of the sleeve body 11, and a metal connecting sleeve 13 disposed at the rear end of the sleeve body 11. The traction seat 2 is a metal piece, and the traction seat 2 has a sleeve shell portion 206 sleeved on the front end of the metal pipe head 12. The sleeve body 11 is made of hard plastic, or a rubber tube reinforced with carbon fiber, or a plastic tube reinforced with carbon fiber, and its length is generally more than one meter, and has a certain bending and deformation ability.

[0036] Preferably, the traction seat 2 is divided into two parts, the left and right parts, which are spliced ​​together by screw connection or welding. The first connecting member 4 is a self-breaking bolt, and the submarine cable connecting member 5 includes a cross bar 51 fixed inside the traction seat 2, and a hook 52 connected to the cross bar 51. The middle part of the self-breaking bolt has an annular groove, and when subjected to a large tensile force, it will break from the annular groove.

[0037] In one embodiment, the barb anti-drop assembly includes at least two splints 7, the inner side of the splints 7 is attached to the outer side of the sleeve 1, all the splints 7 are spliced ​​to form a tubular structure, adjacent splints 7 are connected by threaded fasteners so that the gap width between each splint 7 is adjustable, a ratchet rod 81 is arranged on the outer side wall of the splint 7, the front end of the ratchet rod 81 is hinged to the splint 7, the rear end of the ratchet rod 81 is tilted backward, and an elastic member 82 capable of applying elastic force to the ratchet rod 81 to keep the ratchet rod 81 in an expanded state is arranged between the ratchet rod 81 and the splint 7. A tapered external thread is arranged on the outer side wall of one end of the tubular structure, and a limit nut 83 engaged with the tapered external thread is sleeved on the rear end of the tubular structure.

[0038] Furthermore, a receiving groove 71 capable of receiving the ratchet rod 81 is provided on the outer wall of the clamping plate 7, and the elastic member 82 is an elastic rubber member provided in the receiving groove 71, one end of the elastic rubber member abuts against the bottom surface of the receiving groove 71, and the other end abuts against the inner side surface of the ratchet rod 81. The elastic rubber member is made of rubber, and the main body is in a circular ring shape, and the middle part also has a support rod arranged along the diameter direction. The design of the elastic rubber member can improve its corrosion resistance.

[0039] Reference Figure 6 In this scheme, the method for installing the cable is: firstly, the protective device for guiding the submarine cable through the wall of the utility model is installed at the front end of the submarine cable, and the submarine cable is towed to the vicinity of the wind turbine tower 9 by a tugboat, and then a hook is drawn out from the wind turbine tower 9 to hook the traction head 3, and then the protective device for guiding the submarine cable through the wall is pulled by a crane to move obliquely upward, so that the front part passes through the through hole 91 on the wind turbine tower 9, at this time, all or part of the ratchet rod 81 penetrates into the interior of the wind turbine tower 9, and the limit nut 83 is pressed against the inner wall of the wind turbine tower 9. When the crane pulls the traction head 3 to continue to move upward, the self-breaking bolt between the traction seat 2 and the sleeve 1 will break, and then the sleeve and the barb anti-drop assembly thereon will remain on the wind turbine tower 9, and the traction head 3, the traction seat 2 and the submarine cable will be pulled to continue to move upward until the front end of the submarine cable is pulled to the installation position. After the submarine cable is installed, the sleeve can protect the submarine cable, and the ratchet rod 81 located inside the wind turbine tower 9 can support the inner wall of the wind turbine tower 9 to prevent the sleeve 1 from detaching from the wind turbine tower 9. Since the sleeve body 11 has a certain bending and deformation ability, the protective device for guiding the submarine cable through the wall of the utility model can be more flexibly turned, further improving the convenience of guiding the submarine cable into the wind turbine tower 9. In addition, after the submarine cable is installed, it can also bend to a certain extent in accordance with the bending degree of the submarine cable to avoid stress concentration at the position where the submarine cable contacts the two ends of the sleeve 1, and it can protect the submarine cable, which is beneficial to prolong the service life of the submarine cable.

[0040] In some solutions of the utility model, the universal joint mentioned above can also adopt other structural forms, such as the universal robot joint disclosed in the patent with publication number CN105751239A, or the universal ball joint bearing of CN115750581A. The elastic member 82 mentioned above can also adopt other structural forms, such as a compression spring, the upper end of which abuts against the inner side surface of the ratchet rod 81, and the lower end of which abuts against the bottom surface of the receiving groove 71. In addition, tension springs, torsion springs, etc. can also be used as substitutes. Of course, compared with elastic devices such as compression springs, tension springs, torsion springs, etc., the elastic rubber member has a stronger ability to resist seawater corrosion.

[0041] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A protective device for guiding a submarine cable through a wall, characterized in that: The invention comprises a casing (1), a barb anti-drop assembly arranged on the outer wall of the casing (1), a traction seat (2) arranged at the front end of the casing (1), and a traction head (3); the traction seat (2) and the casing (1) are connected via a first connecting piece (4) that can be broken; the traction seat (2) is provided with a submarine cable connecting piece (5) that can be connected to a submarine cable; the traction head (3) is provided with a hanging connecting piece (35); the traction head (3) is connected to the front end of the traction seat (2) via a universal joint.

2. A protective device for guiding a submarine cable through a wall according to claim 1, characterized in that: The barb anti-drop assembly comprises at least two splints (7), the inner side surfaces of the splints (7) are in contact with the outer side surfaces of the sleeve (1), all the splints (7) are spliced ​​to form a tubular structure, adjacent splints (7) are connected by threaded fasteners so that the gap width between each splint (7) is adjustable, a ratchet rod (81) is arranged on the outer side wall of the splint (7), the front end of the ratchet rod (81) is hinged to the splint (7), the rear end of the ratchet rod (81) is tilted backwards, and an elastic member (82) is arranged between the ratchet rod (81) and the splint (7) so as to apply elastic force to the ratchet rod (81) so as to keep the ratchet rod (81) in an expanded state.

3. A protective device for guiding a submarine cable through a wall according to claim 2, characterized in that: The outer wall of the clamping plate (7) is provided with a receiving groove (71) capable of accommodating the ratchet rod (81); the elastic member (82) is an elastic rubber member arranged in the receiving groove (71); one end of the elastic rubber member abuts against the bottom surface of the receiving groove (71), and the other end abuts against the inner side surface of the ratchet rod (81).

4. A protective device for guiding a submarine cable through a wall according to claim 2, characterized in that: A tapered external thread is arranged on the outer side wall of one end of the tubular structure, and a limiting nut (83) meshing with the tapered external thread is sleeved on the rear end of the tubular structure.

5. A protective device for guiding a submarine cable through a wall according to claim 1, characterized in that: The universal joint comprises a joint cavity (21) arranged on a traction seat (2), and a joint head (31) arranged on the traction head (3) and located in the joint cavity (21); the joint head (31) is provided with a joint arc surface (311) that is rotatably matched with the inner wall of the joint cavity (21).

6. A protective device for guiding a submarine cable through a wall according to claim 5, characterized in that: The front end of the traction seat (2) is provided with a front port (201) communicating with the joint cavity (21); the traction head (3) further comprises a conical head (32) located outside the traction seat (2) and a connecting rod (33) connected between the conical head (32) and the joint head (31); the traction seat (2) is provided with a first curved surface (202) arranged around the front port (201); and the conical head (32) has a second curved surface (302) rotatably matched with the first curved surface (202).

7. A protective device for guiding a submarine cable through a wall according to claim 6, characterized in that: The joint arc surface (311), the first arc surface (202) and the second arc surface (302) are all spherical arc surfaces, and the outer side surface of the traction seat (2) is a conical surface with a diameter that gradually decreases from front to back.

8. A protective device for guiding a submarine cable through a wall according to claim 6, characterized in that: A hanging rope groove (321) is provided at the front end of the conical head (32), and the hanging connection member (35) is a hanging rod arranged in the hanging rope groove (321).

9. A protective device for guiding a submarine cable through a wall according to claim 1, characterized in that: The sleeve (1) comprises an elastic sleeve body (11) and a metal pipe head (12) arranged at the front end of the sleeve body (11); the traction seat (2) is a metal part; and the traction seat (2) has a sleeve portion (206) sleeved on the front end of the metal pipe head (12).

10. A protective device for guiding a submarine cable through a wall according to claim 9, characterized in that: The first connecting member (4) is a self-breaking bolt, and the submarine cable connecting member (5) comprises a cross bar (51) fixed inside the traction seat (2), and a hook (52) connected to the cross bar (51).

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