Offshore wind power submarine cable protection device

Abstract

The utility model relates to an offshore wind power submarine cable protection device, which comprises an annular hoop body sleeved outside a submarine cable main body, and a plurality of insertion rods protruding outwards are arranged on the outer circular surface of the hoop body along the peripheral direction; a plurality of accommodating cavities for accommodating the inserting rods are formed in the outer circular surface of the hoop body in the circumferential direction, and the inserting rods are arranged in the accommodating cavities in a sliding fit manner; a first spring is arranged between the bottom end of the inserting rod and the bottom end of the containing cavity, and when the first spring is in a natural stretching state, the top end of the inserting rod stretches out of the containing cavity. The utility model relates to a submarine cable, and aims to solve the problems that in the prior art, a submarine cable arranged on a seabed is not protected by a sea sand layer, so that the submarine cable is easily influenced by ocean current to move, but the submarine cable has the risk of impacting seabed reefs in the moving process, and then the submarine cable is damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of marine cables, and in particular to an offshore wind power submarine cable protection device. Background Art

[0002] Submarine cable, or marine cable, is a conductor wrapped in insulating material. As the name suggests, it is usually laid in the ocean and is an important means of communication between islands, inland and offshore operations. As an important medium for power transmission, the safety and reliability of submarine cables during use are crucial.

[0003] Generally speaking, during the laying of submarine cables, in shallow sea areas with relatively shallow waters, submarine cables are usually buried under the seabed to prevent the impact of ocean currents and damage from fishing boats. In deep sea areas with relatively deep waters, submarine cables are often laid directly on the seabed in consideration of operating costs and laying difficulties. Submarine cables laid on the seabed are easily affected by ocean currents and move because they are not protected by the sea sand layer. However, there is a risk of hitting seabed reefs during movement, which may cause damage to the cables. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an offshore wind power cable protection device to solve the problem that the submarine cable laid on the seabed in the prior art is easily affected by the ocean current and moves because it has no protection from the sea sand layer. However, there is a risk of the submarine cable colliding with the seabed reefs during movement, thereby causing damage to the submarine cable.

[0005] The utility model is realized by the following technical solutions:

[0006] An offshore wind power submarine cable protection device comprises a ring-shaped hoop body sleeved on the outside of a submarine cable body, wherein the outer circumferential surface of the hoop body is provided with a plurality of outwardly protruding plug rods along the circumferential direction.

[0007] Furthermore, a plurality of receiving cavities for receiving a plurality of insertion rods are provided on the outer circumferential surface of the hoop body in the circumferential direction, and the insertion rods are slidably fitted in the receiving cavities;

[0008] A first spring is provided between the bottom end of the insertion rod and the bottom end of the storage cavity. When the first spring is in a naturally extended state, the top end of the insertion rod extends out of the storage cavity.

[0009] Furthermore, a plurality of compression chambers corresponding to the plurality of receiving chambers are provided on the outer circumferential surface of the hoop body, the compression chambers and the receiving chambers are arranged in parallel, and a piston is slidably and sealingly fitted in the compression chamber;

[0010] A guide hole is provided between the compression chamber and the storage chamber, a pin is provided in the guide hole, and the pin is in single-degree-of-freedom sliding cooperation with the guide hole;

[0011] The side wall of the insertion rod facing the compression chamber is provided with a pin hole for plugging with the end of the pin bar. When the pin hole is opposite to the end of the pin bar, the upper end of the insertion rod is retracted into the storage chamber, and the first spring is in a compressed state.

[0012] A linkage mechanism is provided between the piston and the pin bar, and the pin bar slides toward one side of the compression chamber under the action of the linkage mechanism when the piston moves toward the bottom of the compression chamber.

[0013] Furthermore, a threaded hole extending in the length direction is provided at one end of the pin bar facing the compression chamber, and the linkage mechanism includes a connecting rod arranged below the piston and a gear shaft arranged in the compression chamber, one end of the gear shaft is provided with an external thread, and is inserted into the threaded hole and connected with the threaded hole through threaded matching, and the other end is rotatably connected with the side wall of the compression chamber;

[0014] One end of the connecting rod is fixedly connected to the bottom surface of the piston, and the other end extends downward, and the side wall is fixedly connected to a gear track meshing with the gear in the gear shaft.

[0015] Furthermore, one end of the gear shaft away from the pin bar is fixedly connected to a limit plate, and the limit plate is rotationally matched with the side wall of the compression chamber away from the pin bar.

[0016] Furthermore, a blind hole is formed on the side wall of the insertion rod, and the blind hole is outside the receiving cavity when the first spring is in a naturally extended state;

[0017] A check rod is slidably fitted in the blind hole, a second spring is arranged between the bottom of the check rod and the bottom of the blind hole, and the top of the check rod extends out of the blind hole when the second spring is in a naturally extended state.

[0018] Furthermore, the hoop body includes two clamps in a semicircular ring structure that are buckled with each other, and one end of the two clamps is hinged and the other end is detachably connected.

[0019] Furthermore, the top end of the insertion rod is tapered.

[0020] The beneficial effects of the utility model are:

[0021] The offshore wind power submarine cable protection device has a coupling body outside the submarine cable body, and a plurality of outwardly protruding plug rods are arranged on the outer circular surface of the hoop body. Under the gravity of the submarine cable body, the plug rods are pressed into the sea sand layer to increase the resistance of the sea sand layer to the submarine cable body, thereby reducing the amplitude of the movement of the submarine cable body under the push of the ocean current, and reducing the risk of the submarine cable body being damaged by colliding with seabed reefs during movement.

[0022] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model (state one);

[0024] Figure 2 It is a schematic diagram of the planar structure of an embodiment of the utility model;

[0025] Figure 3 It is a three-dimensional structural schematic diagram of the linkage mechanism in the embodiment of the utility model;

[0026] Figure 4 for Figure 2 The enlarged view of point A in the middle;

[0027] Figure 5 It is a three-dimensional structural schematic diagram of an embodiment of the utility model (state two).

[0028] In the figure: clamp 1, receiving chamber 11, insert rod 111, pin hole 1111, blind hole 1112, first spring 112, pin bar 113, threaded hole 1131, check rod 114, second spring 115, compression chamber 12, piston 121, guide hole 13;

[0029] Connecting rod 21, rack 211, gear shaft 22, limiting plate 221;

[0030] Elastic sheet 31, bolt 32, through hole 33;

[0031] Submarine cable body 4. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0037] See also Figure 1-5 The utility model provides a technical solution: an offshore wind power cable protection device, comprising a ring-shaped hoop body sleeved on the outside of a submarine cable body 4, and a plurality of outwardly protruding plug rods 111 are arranged on the outer circumferential surface of the hoop body along the circumferential direction.

[0038] The hoop body is sleeved and installed on the submarine cable body 4, and a plurality of outwardly protruding plug rods 111 are arranged on the outer circumferential surface of the hoop body. The submarine cable body 4 is laid on the seabed. Under the action of the gravity of the submarine cable body 4, the plug rods 111 are pressed into the sea sand layer to increase the resistance of the sea sand layer to the submarine cable body 4, thereby reducing the amplitude of the movement of the submarine cable body 4 under the push of the ocean current, and reducing the risk of the submarine cable body 4 being damaged by colliding with seabed reefs during movement.

[0039] In this embodiment, a plurality of receiving cavities 11 for receiving a plurality of inserting rods 111 are provided on the outer circumferential surface of the hoop body along the circumferential direction, and the inserting rods 111 are slidably fitted in the receiving cavities 11;

[0040] A first spring 112 is disposed between the bottom end of the insertion rod 111 and the bottom end of the storage chamber 11 . When the first spring 112 is in a naturally stretched state, the top end of the insertion rod 111 extends out of the storage chamber 11 .

[0041] By providing a storage cavity 11 on the outer circumferential surface of the hoop body and slidingly fitting the insertion rod 111 in the storage cavity 11, the insertion rod 111 has the ability to extend and retract; by providing a first spring 112 between the bottom end of the hoop body and the bottom end of the storage cavity 11 to support the insertion rod 111, and at the same time, through the flexible support of the first spring 112, the length of the insertion rod 111 extending out of the storage cavity 11 can be automatically adjusted. Since the pressure applied by the submarine cable body 4 to each insertion rod 111 on the side of the hoop body facing the sea sand layer is different, each insertion rod 111 is inserted into the sea sand layer with a different extension length, thereby increasing the contact point between the hoop body and the sea sand layer, and finally increasing the resistance of the sea sand layer to the submarine cable body 4.

[0042] In this embodiment, a plurality of compression chambers 12 corresponding to the plurality of receiving chambers 11 are further provided on the outer circumferential surface of the hoop body. The compression chambers 12 are arranged in parallel with the receiving chambers 11. A piston 121 is slidably and sealingly fitted in the compression chamber 12.

[0043] A guide hole 13 is provided between the compression chamber 12 and the storage chamber 11. A pin bar 113 is provided in the guide hole 13. The pin bar 113 is in single-degree-of-freedom sliding cooperation with the guide hole 13.

[0044] The side wall of the insertion rod 111 facing the compression chamber 12 is provided with a pin hole 1111 for plugging with the end of the pin bar 113. When the pin hole 1111 is opposite to the end of the pin bar 113, the upper end of the insertion rod 111 is retracted into the storage chamber 11, and the first spring 112 is in a compressed state.

[0045] A linkage mechanism is provided between the piston 121 and the pin bar 113 . When the piston 121 moves toward the bottom of the compression chamber 12 , the pin bar 113 slides toward one side of the compression chamber 12 under the action of the linkage mechanism.

[0046] When the hoop is transported or installed, the insertion rod 111 is received in the receiving cavity 11. Figure 1 As shown; by inserting one end of the pin bar 113 into the pin hole 1111 to prevent the extension of the insertion rod 111, thereby limiting the free extension of the first spring 112, so that the insertion rod 111 is stably stored in the storage chamber 11, thereby facilitating the transportation or installation of the hoop body; a compression chamber 12 is provided on the outer circumferential surface of the hoop body, and the compression chamber 12 is divided into a bottom space and a top space by a piston 121, and the top space of the compression chamber 12 is connected to the outside of the hoop body, and the pin bar 113 slides and seals in the guide hole 13, so that the bottom space of the compression chamber 12 is a closed chamber;

[0047] When the hoop body and the submarine cable body 4 sink to the seabed together, the insertion rod 111 extends out from the storage cavity 11. Figure 5 As shown; seawater enters the upper space of the compression chamber 12, and the pressure of the seawater pushes the piston 121 to move toward the bottom of the compression chamber 12, and then drives the pin 113 to slide toward one side of the compression chamber 12 through the linkage mechanism, and then the pin 113 slides out of the pin hole 1111, and the first spring 112 freely extends to push the insertion rod 111 to extend out of the storage chamber 11, so as to achieve the purpose of automatically extending the insertion rod 111 in the seabed environment.

[0048] In this embodiment, a threaded hole 1131 extending along the length direction is formed at one end of the pin bar 113 facing the compression chamber 12, and the linkage mechanism includes a connecting rod 21 disposed below the piston 121 and a gear shaft 22 disposed in the compression chamber 12, one end of the gear shaft 22 is provided with an external thread, and is inserted into the threaded hole 1131 and connected to the threaded hole 1131 through threaded matching, and the other end is rotatably connected to the side wall of the compression chamber 12;

[0049] One end of the connecting rod 21 is fixedly connected to the bottom surface of the piston 121 , and the other end extends downward, and a side wall is fixedly connected to a rack 211 meshing with a gear in the gear shaft 22 .

[0050] The piston 121 is in the shape of a rectangular plate to limit the free rotation of the piston 121 during the sliding process, so that the piston 121 can slide in the compression chamber 12 with a single degree of freedom, thereby improving the stability of the meshing between the rack 211 on the connecting rod 21 and the gear in the gear shaft 22 .

[0051] When using, Figure 4 As shown, seawater applies pressure to the piston 121 toward the bottom of the compression chamber 12, and the piston 121 moves toward the bottom of the compression chamber 12 with the connecting rod 21 and the gear rail 211 on the connecting rod 21, and then the gear rail 211 drives the gear shaft 22 to rotate, so that the external thread at one end of the gear shaft 22 pushes the pin 113 to slide toward one side of the compression chamber 12, and finally one end of the pin 113 slides out of the pin hole 1111.

[0052] In this embodiment, one end of the gear shaft 22 away from the pin bar 113 is fixedly connected to a limit plate 221 , and the limit plate 221 is rotatably matched with a side wall of the compression chamber 12 away from the pin bar 113 .

[0053] The limiting plate 221 is embedded in the side wall of the compression chamber 12 away from the pin 113 to limit the axial movement of the gear shaft 22, thereby further improving the stability of the meshing between the rack 211 on the connecting rod 21 and the gear in the gear shaft 22.

[0054] In this embodiment, a blind hole 1112 is further provided on the side wall of the insertion rod 111. When the first spring 112 is in a naturally extended state, the blind hole 1112 is outside the receiving cavity 11.

[0055] A check rod 114 is slidably fitted in the blind hole 1112 , and a second spring 115 is provided between the bottom of the check rod 114 and the bottom of the blind hole 1112 . When the second spring 115 is in a naturally extended state, the top of the check rod 114 extends out of the blind hole 1112 .

[0056] An automatically extendable check rod 114 is provided on the insertion rod 111 to limit the maximum distance that the insertion rod 111 can retract into the storage chamber 11 after being fully extended, thereby preventing the insertion rod 111 from being squeezed and completely retracted into the storage chamber 11 after being extended, so that the insertion rod 111 can be stably inserted into the sea sand layer to play a reinforcing and protective role.

[0057] In this embodiment, the hoop body includes two clamps 1 in a semicircular ring structure that are buckled with each other. One end of the two clamps 1 is hinged and the other end is detachably connected.

[0058] By hingedly connecting one end of the two clamps 1 and detachably connecting the other end, the positions of the two clamps 1 installed on the submarine cable body 4 can be freely adjusted; two coaxial through holes 33 are provided on the non-hinged ends of the two clamps 1, bolts 32 adapted to the through holes 33 are selected, and the threaded ends of the bolts 32 are passed through the two through holes 33 in turn and then screwed into nuts to clamp and fix the two clamps 1, and then the two clamps 1 are fixedly installed on the submarine cable body 4; an elastic sheet 31 made of rubber material is fixedly connected to the inner circular surface of the clamp 1, and the elastic sheet 31 has a buffering effect on the submarine cable body 4, reducing the risk of damage to the submarine cable body 4 caused by the clamp 1 during the installation and clamping process.

[0059] In this embodiment, the top end of the insertion rod 111 is conical.

[0060] The top end of the insertion rod 111 is set to be conical, so that the insertion rod 111 can be easily inserted into the sea sand layer.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An offshore wind power cable protection device, characterized in that: It comprises a ring-shaped hoop body sleeved on the outside of a submarine cable body (4), wherein the outer circumferential surface of the hoop body is provided with a plurality of outwardly protruding plug rods (111) along the circumferential direction; A plurality of receiving cavities (11) for receiving a plurality of insertion rods (111) are provided on the outer circumferential surface of the hoop body in a circumferential direction, and the insertion rods (111) are slidably fitted in the receiving cavities (11); A first spring (112) is provided between the bottom end of the insertion rod (111) and the bottom end of the storage chamber (11), and when the first spring (112) is in a naturally extended state, the top end of the insertion rod (111) extends out of the storage chamber (11); A plurality of compression chambers (12) corresponding to the plurality of storage chambers (11) are also provided on the outer circumferential surface of the hoop body. The compression chambers (12) and the storage chambers (11) are arranged in parallel. A piston (121) is slidably and sealingly fitted in the compression chamber (12). A guide hole (13) is provided between the compression chamber (12) and the storage chamber (11), a pin bar (113) is provided in the guide hole (13), and the pin bar (113) and the guide hole (13) are slidably matched with each other in a single degree of freedom; The side wall of the insertion rod (111) facing the compression chamber (12) is provided with a pin hole (1111) for plugging with the end of the pin bar (113); when the pin hole (1111) is opposite to the end of the pin bar (113), the upper end of the insertion rod (111) is retracted into the storage chamber, and the first spring (112) is in a compressed state; A linkage mechanism is provided between the piston (121) and the pin bar (113), and when the piston (121) moves toward the bottom of the compression chamber (12), the pin bar (113) slides toward one side of the compression chamber (12) under the action of the linkage mechanism; The pin bar (113) is provided with a threaded hole (1131) extending along the length direction at one end facing the compression chamber (12); the linkage mechanism comprises a connecting rod (21) arranged below the piston (121) and a gear shaft (22) arranged in the compression chamber (12); one end of the gear shaft (22) is provided with an external thread and is inserted into the threaded hole (1131) and connected to the threaded hole (1131) through threaded matching; the other end is rotatably connected to the side wall of the compression chamber (12); One end of the connecting rod (21) is fixedly connected to the bottom surface of the piston (121), and the other end extends downward, and the side wall is fixedly connected to a gear rail (211) that meshes with the gear in the gear shaft (22).

2. The offshore wind power cable protection device according to claim 1 is characterized in that: One end of the gear shaft (22) away from the pin bar (113) is fixedly connected to a limit plate (221), and the limit plate (221) is rotatably matched with a side wall of the compression chamber (12) away from the pin bar (113).

3. The offshore wind power cable protection device according to claim 2 is characterized in that: The side wall of the insertion rod (111) is also provided with a blind hole (1112), and when the first spring (112) is in a naturally extended state, the blind hole (1112) is outside the storage cavity (11); A check rod (114) is slidably fitted in the blind hole (1112), a second spring (115) is provided between the bottom of the check rod (114) and the bottom of the blind hole (1112), and the top of the check rod (114) extends out of the blind hole (1112) when the second spring (115) is in a naturally extended state.

4. The offshore wind power cable protection device according to claim 3 is characterized in that: The hoop body comprises two clamps (1) in a semicircular ring structure that are buckled with each other. One end of the two clamps (1) is hinged and the other end is detachably connected.

5. The offshore wind power cable protection device according to claim 4 is characterized in that: The top end of the insertion rod (111) is tapered.

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