Floating offshore wind power combined impressed current protection device

Abstract

The utility model discloses a floating type offshore wind power combined impressed current protection device which comprises a mounting base, a base plate fixedly connected to the center of the top of the mounting base, a bottom column fixedly connected to the center of the top of the base plate, a bottom plate installed at the top end of an extension column at the highest position, and multiple sets of limiting sliding rods fixedly connected to the outer edge of the top of the bottom plate. A sliding ring is slidably connected to the outer wall of the limiting sliding rod, a floating seat is fixedly connected to the inner wall of the sliding ring, an offshore wind turbine generator set is fixedly connected to the center of the top of the floating seat, a U-shaped frame penetrates through the front end of the offshore wind turbine generator set, and a current protection module is installed in the U-shaped frame. According to the floating type offshore wind turbine generator set limiting device, the up-down floating range of the floating type offshore wind turbine generator set can be limited, the floating type offshore wind turbine generator set cannot topple over or float out of the designated range when encountering huge sea waves and typhoons, and therefore a good protection effect is achieved, and meanwhile the situation that a maritime work cable is broken is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore wind power engineering equipment, in particular to a floating offshore wind power combined impressed current protection device. Background Art

[0002] The buoyancy foundation of offshore wind power is mainly composed of steel structure, and its cathodic protection is crucial. A traditional offshore wind turbine adopts an impressed current cathodic protection system, which has problems such as high cost, numerous equipment, large maintenance workload, and inconvenient maintenance. The floating offshore wind power combined impressed current protection device is designed to solve the above problems. Through a special design, it realizes the joint protection of multiple floating offshore wind turbines. The device includes a constant potential meter and an auxiliary anode, wherein the negative pole of the constant potential meter is connected to multiple floating offshore wind turbines, and the positive pole is connected to the auxiliary anode. The distance from the auxiliary anode to each floating offshore wind turbine is equal to ensure the uniformity of current distribution.

[0003] Offshore wind turbines are prone to over-protection and under-protection areas. When using remote auxiliary anodes, the auxiliary anodes are far away from the offshore wind turbines, and the fan-shaped current coverage is large. It is easy to overlap with the fan-shaped current of the adjacent auxiliary anodes, resulting in the adjacent offshore wind turbines being covered therein, causing DC interference to the protection circuits of other offshore wind turbines. Based on these problems, Chinese patent CN216786259U discloses a combined impressed current protection device for multiple floating offshore wind turbines, which shares a constant potentiostat and auxiliary anodes for multiple floating offshore wind turbines. The number of equipment is greatly reduced, the cost is significantly reduced, and the subsequent maintenance and inspection are simple, convenient and fast. The equal distance from the auxiliary anode to each floating offshore wind turbine ensures that the current distribution in each cathodic protection circuit is uniform and stable. The reduction in the number of auxiliary anodes also allows the distance between two adjacent auxiliary anodes to be larger, and there will be no overlap in the fan-shaped current coverage, solving the problem of DC interference.

[0004] Since the floating offshore wind turbine is not equipped with a limit and protection mechanism, it is easy for the floating offshore wind turbine to topple over or drift out of the designated range when encountering huge waves and typhoons. It may also cause the marine engineering cable to break, seriously affecting the stability and safety of the offshore wind turbine. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A floating offshore wind power combined impressed current protection device comprises a mounting seat, a pad is fixedly connected at the top center of the mounting seat, a bottom column is fixedly connected at the top center of the pad, a plurality of groups of extension columns are installed at the top of the bottom column, a bottom plate is installed at the top of the highest extension column, a plurality of groups of limit sliding rods are fixedly connected at the outer edge of the top of the bottom plate, a slip ring is slidably connected to the outer wall of the limit sliding rod, a floating seat is fixedly connected to the inner wall of the slip ring, an offshore wind turbine is fixedly connected at the top center of the floating seat, a U-shaped frame runs through the front end of the offshore wind turbine, and a current protection module is installed inside the U-shaped frame.

[0008] As a further description of the above technical solution:

[0009] A plurality of groups of insertion rods are vertically passed through the outer edge of the top of the mounting seat, and a plurality of groups of grooves are arranged in the insertion rods.

[0010] As a further description of the above technical solution:

[0011] The top centers of the bottom column and the extension column are both provided with insertion holes, the bottom centers of the extension column and the bottom plate are both fixedly connected with insertion blocks, and the outer walls of the insertion blocks are both plugged into the inner walls of the insertion holes.

[0012] As a further description of the above technical solution:

[0013] The top ends of the outer walls of the bottom column and the extension column are fixedly connected with top rings, both ends of the top rings are provided with through holes that penetrate up and down, and the bottom ends of the outer walls of the extension columns are fixedly connected with bottom rings.

[0014] As a further description of the above technical solution:

[0015] Both ends of the bottom of the extension column and the bottom plate are fixedly connected with an insertion shaft, the top end of the outer wall of the insertion shaft is sleeved with the inner wall of the through hole, and the bottom end of the outer wall of the insertion shaft is threadedly connected with a threaded cover.

[0016] As a further description of the above technical solution:

[0017] A top plate is fixedly connected to the center of the top of the bottom plate, and hollow shafts are fixedly connected to both sides of the front end of the U-shaped frame, and threads are formed on the inner wall of the hollow shaft.

[0018] As a further description of the above technical solution:

[0019] The outer wall of the hollow shaft is sleeved with a baffle, the center of the front end of the hollow shaft is threadedly connected with a bolt, and one end of the outer wall of the offshore wind turbine is fixedly connected with an offshore cable.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] (1) By setting the connection structure between the limit slide rod and the slip ring, the floating range of the floating offshore wind turbine can be limited. When encountering huge waves and typhoons, the floating offshore wind turbine will not fall over or drift out of the specified range, thereby achieving a good protection effect and avoiding the breakage of the marine cable.

[0022] (2) By setting a connection structure between the plug shaft, the threaded cover and the through hole, the base column, the extension column and the base plate can be fixed together. By controlling the number of extension columns installed, the height of the limit and protection mechanism can be adjusted. By setting a connection structure between the baffle, the hollow shaft and the bolt, the current protection module can be fixed in the U-shaped frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is one of the structural diagrams of the utility model;

[0024] Figure 2 This is the second structural diagram of the utility model;

[0025] Figure 3 It is a front view of the utility model;

[0026] Figure 4 It is a front cross-sectional view of the utility model;

[0027] Figure 5 For this utility model Figure 4 A partial enlarged view of area A.

[0028] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0029] 1. Mounting seat; 2. Insert rod; 3. Groove; 4. Pad; 5. Bottom column; 6. Extension column; 7. Bottom plate; 8. Socket; 9. Insert block; 10. Top ring; 11. Through hole; 12. Bottom ring; 13. Insert shaft; 14. Threaded cover; 15. Top plate; 16. Limiting slide rod; 17. Slip ring; 18. Floating seat; 19. Offshore wind turbine; 20. U-shaped frame; 21. Current protection module; 22. Hollow shaft; 23. Baffle; 24. Bolt; 25. Offshore cable. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0033] Reference Figure 1-5 The utility model provides an embodiment: a floating offshore wind power combined impressed current protection device, including a mounting seat 1, a plurality of groups of plug rods 2 are vertically penetrated at the outer edge of the top of the mounting seat 1, a plurality of groups of through holes are provided in the mounting seat 1, the outer walls of the plug rods 2 are vertically penetrated through the internal through holes of the mounting seat 1, and the protruding ends can be inserted into the seabed mud, and a plurality of groups of grooves 3 are provided in the plug rod 2. By setting the grooves 3, when the plug rod 2 is inserted into the seabed mud, part of the mud will flow into the grooves 3, which can not only expand the contact surface between the plug rod 2 and the mud, but also improve the stability of the entire mounting seat 1. A pad 4 is fixedly connected at the center of the top of the mounting seat 1, and a bottom column 5 is fixedly connected at the center of the top of the pad 4. A plurality of groups of extension columns 6 are installed on the top of the bottom column 5, and a bottom plate 7 is installed on the top of the highest extension column 6.

[0034] The top centers of the bottom column 5 and the extension column 6 are both provided with a socket 8, and the bottom centers of the extension column 6 and the bottom plates 7 are both fixedly connected with a plug block 9, and the outer walls of the plug block 9 are plugged into the inner walls of the socket 8. By setting a connection structure between the plug block 9 and the socket 8, the stability of the connection structure between the bottom column 5, the extension column 6 and the bottom plate 7 can be improved. The top ends of the outer walls of the bottom column 5 and the extension column 6 are both fixedly connected with a top ring 10, and both ends of the top ring 10 are provided with through holes 11 that penetrate up and down. The bottom ends of the outer walls of the extension column 6 are both fixedly connected with a bottom ring 12, and the bottom ends of the extension column 6 and the bottom plates 7 are both fixedly connected with an insertion shaft 13, and the top ends of the outer walls of the insertion shaft 13 are sleeved with the inner walls of the through holes 11, and the bottom ends of the outer walls of the insertion shaft 13 are threadedly connected with a threaded cover 14. By setting a connection structure between the insertion shaft 13, the threaded cover 14 and the through holes 11, the bottom column 5, the extension column 6 and the bottom plate 7 can be fixed together, and the height of the limit and protection mechanism can be adjusted by controlling the number of extension column 6 installed.

[0035] A top plate 15 is fixedly connected to the top center of the bottom plate 7, a plurality of limit slide bars 16 are fixedly connected to the top outer edge of the bottom plate 7, a slip ring 17 is slidably connected to the outer wall of the limit slide bar 16, a floating seat 18 is fixedly connected to the inner wall of the slip ring 17, and an offshore wind turbine 19 is fixedly connected to the top center of the floating seat 18. By setting the top plate 15, the floating seat 18 can be raised, which helps seawater to flow into the bottom end of the floating seat 18. By setting the connection structure between the limit slide bar 16 and the slip ring 17, the up and down floating range of the offshore wind turbine 19 can be limited. When encountering huge waves and typhoons, the offshore wind turbine 19 will not topple over or drift out of the specified range, thereby achieving a good protection effect.

[0036] A U-shaped frame 20 is passed through the front end of the offshore wind turbine 19, and a current protection module 21 is installed inside the U-shaped frame 20. The current protection module 21 is installed with a current protector and multiple sets of electronic components, which are mainly used to monitor the current situation in the circuit and take timely measures to prevent the power equipment from being damaged. When the current in the power system exceeds the normal range, it will respond quickly. The current sensor detects the current size and direction, and the current signal is sent to the comparator to compare with the preset current threshold. If the current exceeds the threshold, the trigger will start, and finally, the circuit will be cut off by triggering the circuit breaker to isolate The model of the current protector is HTHY-21, and the current protection module 21 can be installed and protected by setting a U-shaped frame 20. Hollow shafts 22 are fixedly connected to both sides of the front end of the U-shaped frame 20. A baffle 23 is sleeved on the outer wall of the hollow shaft 22. Bolts 24 are threadedly connected at the center of the front end of the hollow shaft 22. The inner wall of the hollow shaft 22 is threaded. By setting a connecting structure among the baffle 23, the hollow shaft 22 and the bolts 24, the current protection module 21 can be fixed in the U-shaped frame 20. An offshore cable 25 is fixedly connected to one end of the outer wall of the offshore wind turbine 19.

[0037] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A floating offshore wind power combined impressed current protection device, comprising a mounting seat (1), characterized in that: A pad (4) is fixedly connected at the center of the top of the mounting seat (1), a bottom column (5) is fixedly connected at the center of the top of the pad (4), a plurality of groups of extension columns (6) are installed at the top of the bottom column (5), a bottom plate (7) is installed at the top of the highest extension column (6), a plurality of groups of limit slide bars (16) are fixedly connected at the outer edge of the top of the bottom plate (7), a slip ring (17) is slidably connected to the outer wall of the limit slide bar (16), a floating seat (18) is fixedly connected to the inner wall of the slip ring (17), an offshore wind turbine (19) is fixedly connected at the center of the top of the floating seat (18), a U-shaped frame (20) is passed through the front end of the offshore wind turbine (19), and a current protection module (21) is installed inside the U-shaped frame (20).

2. A floating offshore wind power combined impressed current protection device according to claim 1, characterized in that: A plurality of groups of insertion rods (2) are vertically penetrated at the outer edge of the top of the mounting seat (1), and a plurality of groups of grooves (3) are provided in the insertion rods (2).

3. A floating offshore wind power combined impressed current protection device according to claim 1, characterized in that: The top centers of the base column (5) and the extension column (6) are both provided with insertion holes (8); the bottom centers of the extension column (6) and the bottom plate (7) are both fixedly connected with insertion blocks (9); and the outer walls of the insertion blocks (9) are both plugged into the inner walls of the insertion holes (8).

4. A floating offshore wind power combined impressed current protection device according to claim 1, characterized in that: The top ends of the outer walls of the bottom column (5) and the extension column (6) are fixedly connected with a top ring (10), both ends of the top ring (10) are provided with through holes (11) penetrating upward and downward, and the bottom ends of the outer walls of the extension column (6) are fixedly connected with a bottom ring (12).

5. A floating offshore wind power combined impressed current protection device according to claim 4, characterized in that: The two ends of the bottom of the extension column (6) and the bottom plate (7) are fixedly connected with an insertion shaft (13), the top end of the outer wall of the insertion shaft (13) is sleeved with the inner wall of the through hole (11), and the bottom end of the outer wall of the insertion shaft (13) is threadedly connected with a threaded cover (14).

6. A floating offshore wind power combined impressed current protection device according to claim 1, characterized in that: A top plate (15) is fixedly connected to the center of the top of the bottom plate (7), and hollow shafts (22) are fixedly connected to both sides of the front end of the U-shaped frame (20), and the inner wall of the hollow shaft (22) is provided with threads.

7. A floating offshore wind power combined impressed current protection device according to claim 6, characterized in that: The outer wall of the hollow shaft (22) is sleeved with a baffle (23), the front end center of the hollow shaft (22) is threadedly connected with a bolt (24), and one end of the outer wall of the offshore wind turbine unit (19) is fixedly connected with an offshore cable (25).

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