Fan communication slip ring

Abstract

The utility model provides a fan communication slip ring which comprises a rotor, a stator and a slip ring shell, a signal transmission component is borne in the slip ring shell, the opposite ends of the rotor and the stator are mutually sleeved, the slip ring shell is sleeved at the other end of the stator, an encoder is installed at the other end of the slip ring shell, and an expansion sealing ring is arranged at the joint of the slip ring shell and the encoder. A protection assembly is arranged on the outer side of the slip ring shell and comprises a protection cover arranged on the outer surface of the slip ring shell in a sleeving mode. Compared with the prior art, the utility model has the following beneficial effects: the two sealing reinforcements are wrapped at the two end parts of the outer surface of the slip ring shell, and the sealing reinforcements also wrap the outer surfaces of the two ends of the protective cover at the same time, so that gaps are prevented from being generated between the two ends of the protective cover and the slip ring shell after the protective cover is installed; and moisture and salt mist in the working environment of the slip ring are left on the outer surface of the slip ring shell to cause corrosion of the slip ring shell, so that the use protection performance of the slip ring shell is further improved.

Description

A wind turbine communication slip ring Technical Field

[0001] This utility model is a wind turbine communication slip ring, belonging to the field of wind power equipment. Background Technology

[0002] In recent years, China's wind power industry has developed rapidly. Offshore wind power generation in my country is still in its initial stage. While offshore wind energy reserves are far greater than onshore wind energy, the operating environment for offshore wind power is more complex and the technical requirements are higher. Communication slip rings used in offshore wind turbines are responsible for transmitting power, control signals, and data throughout the entire wind turbine system. Their service life, reliability, and accuracy directly affect the performance of the wind power generation system. For offshore wind turbines, the biggest challenge with communication slip rings lies in their highly corrosive and salt spray-prone working environment.

[0003] Therefore, a corrosion-resistant communication slip ring with patent number CN202023178823.3 improves the sealing performance of the entire communication slip ring by setting up components such as flexible sealing ring, expansion sealing ring and protective cover and their relative structural positions, so that the corrosion resistance level of the entire communication slip ring reaches the C4 standard, solving a major problem of corrosion prevention for offshore wind turbines.

[0004] However, the communication slip ring housing described in the aforementioned patent is directly located in the external environment, which means that the communication slip ring housing is directly placed in the marine working environment. In the highly corrosive and salt spray working environment, the communication slip ring housing is prone to corrosion over time. Furthermore, the moisture and salt spray at sea can enter the interior of the slip ring housing due to corrosion, thereby corroding the internal structure of the slip ring housing and ultimately reducing the service life of the wind turbine communication slip ring. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a wind turbine communication slip ring.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] A wind turbine communication slip ring includes a rotor, a stator, and a slip ring housing. The slip ring housing carries signal transmission components. The rotor and stator are sleeved together at opposite ends. The slip ring housing is sleeved on the other end of the stator. An encoder is installed on the other end of the slip ring housing. An expansion sealing ring is provided at the connection between the slip ring housing and the encoder. A protective component is provided on the outside of the slip ring housing. The protective component includes a protective cover sleeved on the outer surface of the slip ring housing. The protective cover is divided into a semi-circular cover one and a semi-circular cover two. The mating joints of the semi-circular cover one and the semi-circular cover two are matched with mating sealing cover plates. The mating sealing cover plates have threaded mounting holes. Semi-circular sealing rings are attached to both ends of the inner side of the semi-circular cover one and the semi-circular cover two. Sealing reinforcements are sleeved on the outer surfaces of both ends of the protective cover.

[0008] Furthermore, a rotor adapter is installed at the other end of the rotor, a rubber buffer pad is provided at the rear end of the rotor adapter, a rotor cable interface is also provided at the rear end of the rotor adapter, and a flexible sealing ring is provided at the connection between the rotor and the stator.

[0009] Furthermore, a stator adapter is provided on the stator, and a stator cable interface is provided on the stator adapter.

[0010] Furthermore, the sealing reinforcement includes an outer sealing ring, which includes an upper sealing ring and a lower sealing ring. Both the upper and lower sealing rings include semi-circular rings fitted at both ends of the outer side of the protective cover and auxiliary semi-circular rings fitted at both ends of the outer side of the slip ring housing.

[0011] Furthermore, the semi-circular ring and the secondary semi-circular ring are integrated, and a secondary semi-circular sealing ring is provided on the inner side of both the semi-circular ring and the secondary semi-circular ring. An mounting plate is fixed on the outer wall of the semi-circular ring, and the mounting plate is fixed to the outer end surfaces of the protective cover by screws.

[0012] Furthermore, secondary mounting plates are fixedly provided at the joints of the secondary semi-circular rings, and the secondary mounting plates are fixed together with bolts.

[0013] Furthermore, multiple positioning plates are fixedly provided on the outer surface of the slip ring housing. A through-hole for the positioning plates is provided at the joint of the first and second semicircular covers. A rubber sealing ring is fixedly provided along the edge of the bottom end of the positioning plate. A rubber sealing gasket is fixedly provided on the end face of the positioning plate facing the semicircular ring.

[0014] The beneficial effects of this utility model are:

[0015] By directly fitting a protective cover onto the slip ring housing, and dividing the protective cover into two semi-circular covers (one and two), which are then joined together and wrapped around the outer surface of the slip ring housing, the communication slip ring requires a protective cover to cover its surface during use. This ensures a sufficiently clean operating environment, improves the corrosion resistance of the wind turbine communication slip ring, guarantees its long-term effective use, and provides excellent protection for the signal transmission components inside the wind turbine communication slip ring.

[0016] With the sealing reinforcement, two sealing reinforcements are wrapped around the two ends of the outer surface of the slip ring housing, and the sealing reinforcements are also wrapped around the outer surfaces of both ends of the protective cover. Therefore, after the protective cover is installed, gaps are avoided between the two ends of the protective cover and the slip ring housing, so that moisture and salt spray in the working environment of the slip ring remain on the outer surface of the slip ring housing, causing corrosion of the slip ring housing, thereby further improving the protective performance of the slip ring housing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 is a front view of a wind turbine communication slip ring according to this utility model;

[0019] Figure 2 is a schematic diagram of the outer sealing ring structure of a wind turbine communication slip ring according to this utility model;

[0020] Figure 3 is a schematic diagram of the semi-circular cover one and semi-circular cover two of the wind turbine communication slip ring of this utility model, which are connected to the slip ring housing.

[0021] Figure 4 is a schematic diagram of the docking sealing cover plate structure of a wind turbine communication slip ring according to this utility model.

[0022] In the diagram, 1. Rotor; 2. Stator; 3. Slip ring housing; 4. Encoder; 5. Protective cover; 6. Semicircular cover one; 7. Semicircular cover two; 8. Butt sealing cover; 9. Threaded mounting hole; 10. Semicircular sealing ring; 11. Rotor adapter; 12. Buffer pad; 13. Rotor cable interface; 14. Stator adapter; 15. Outer sealing ring; 16. Upper sealing ring; 17. Lower sealing ring; 18. Semicircular ring; 19. Secondary semicircular ring; 20. Mounting piece; 21. Secondary mounting piece; 22. Flexible sealing ring; 23. Expansion sealing ring; 24. Positioning plate; 25. Through-hole; 26. Rubber sealing ring; 27. Secondary semicircular sealing ring; 28. Rubber sealing gasket. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please refer to Figures 1-4. This utility model provides a wind turbine communication slip ring, including a rotor 1, a stator 2, and a slip ring housing 3. The slip ring housing 3 carries a signal transmission component. The rotor 1 and stator 2 are sleeved on opposite ends. The slip ring housing 3 is sleeved on the other end of the stator 2. An encoder 4 is installed on the other end of the slip ring housing 3. An expansion sealing ring 23 is provided at the connection between the slip ring housing 3 and the encoder 4. A protective component is provided on the outside of the slip ring housing 3. The protective component includes a protective cover 5 sleeved on the outer surface of the slip ring housing 3. The protective cover 5 is divided into a semi-circular cover 6 and a semi-circular cover 7. The joint of the semi-circular cover 6 and the semi-circular cover 7 is matched with a joint sealing cover 8. The joint sealing cover 8 has a threaded mounting hole 9. A semi-circular sealing ring 10 is pasted on both ends of the inner side of the semi-circular cover 6 and the semi-circular cover 7. Sealing reinforcements are sleeved on both ends of the outer surface of the protective cover 5.

[0025] Referring to Figure 1, a rotor adapter 11 is installed at the other end of the rotor 1. A rubber buffer pad 12 is provided at the rear end of the rotor adapter 11, and a rotor cable interface 13 is also provided at the rear end of the rotor adapter 11. A flexible sealing ring 22 is provided at the connection between the rotor 1 and the stator 2. A stator adapter 14 is provided on the stator 2, and a stator cable interface is provided on the stator adapter 14. The slip ring housing 3 is sleeved on the other end of the stator 2, serving as the main body of the slip ring and bearing the signal transmission component structure inside the slip ring. The communication slip ring of the offshore wind turbine is responsible for the transmission of power, control signals, and data of the entire wind turbine system. Therefore, the signal transmission component structure and other components inside the slip ring housing 3 are existing. Detailed descriptions of the internal signal transmission component structure and other components inside the slip ring housing 3 are not provided here. A flexible sealing ring is provided at the connection between rotor 1 and stator 2. The flexible sealing ring deforms as it rotates, and this deformation fills the gaps generated during rotation. This prevents moisture and salt spray in the working environment of the slip ring from entering the interior of the two components through the connection between rotor 1 and stator 2, thus avoiding corrosion of the internal structure of rotor 1 and stator 2. The flexible sealing ring is made of flexible anti-corrosion material. An expansion sealing ring is provided at the connection between slip ring housing 3 and encoder 4. The expansion sealing ring fills the empty space at the connection between slip ring housing and encoder 4, isolating moisture and salt spray in the working environment, thus preventing corrosion of the internal structure of the encoder. It should be noted that an encoder protective cover can be installed on the outside of encoder 4. The encoder protective cover is a protective cover made of effective anti-corrosion material to ensure that the encoder is in a dry working environment.

[0026] Referring to Figures 1-2, the sealing reinforcement includes an outer sealing ring 15, which includes an upper sealing ring 16 and a lower sealing ring 17. Both the upper sealing ring 16 and the lower sealing ring 17 include a semi-circular ring 18 fitted onto the outer ends of the protective cover 5 and a secondary semi-circular ring 19 fitted onto the outer ends of the slip ring housing 3. The semi-circular ring 18 and the secondary semi-circular ring 19 are integrally formed, and a secondary semi-circular sealing ring 27 is provided on the inner side of both the semi-circular ring 18 and the secondary semi-circular ring 19. An mounting piece 20 is fixed to the outer wall of the semi-circular ring 18, and the mounting piece 20 is fixed to the outer end surfaces of the protective cover 5 by screws. The outer sealing ring 15 mainly includes a semi-circular ring 18 and a secondary semi-circular ring 19 symmetrically arranged vertically. The semi-circular ring 18 and the secondary semi-circular ring 19 are integrally formed, one large and one small. The semi-circular ring 18 wraps around the protective cover 5. The outer surface of the semicircular ring 18 and the inner side of the semicircular ring 18 are in close contact with the outer surface of the protective cover 5, which provides a seal after the joint is completed. The mounting piece 20 on the outer wall of the semicircular ring 18 matches the threaded hole on the outer surface of the protective cover 5. The threaded hole on the outer surface of the protective cover 5 can be directly seen in the figure. It is fixed with screws. At this time, the secondary semicircular ring 19 is wrapped around the two ends of the outer surface of the slip ring housing 3. The secondary semicircular sealing ring 27 on the inner side of the secondary semicircular ring 19 is in close contact with the outer surface of the slip ring housing 3. This avoids the gap between the two ends of the protective cover 5 and the slip ring housing 3 after the protective cover 5 is installed, so that the moisture and salt spray in the working environment of the slip ring remain on the outer surface of the slip ring housing 3, causing corrosion of the slip ring housing 3, thereby further improving the protective performance of the slip ring housing 3.

[0027] The final set of the secondary semi-circular ring 19 and protective cover 5 provides a complete wrapping of the outer surface of the slip ring housing 3.

[0028] Referring to Figures 1-2, secondary mounting pieces 21 are fixedly provided at the joints of the secondary semicircular rings 19. The secondary mounting pieces 21 are fixed together with bolts to further ensure the installation and fixation of the secondary semicircular rings 19 and achieve an effective sealing effect.

[0029] Referring to Figure 2-4, multiple positioning plates 24 are fixedly provided on the outer surface of the slip ring housing 3. A through-hole 25 for the positioning plates 24 is provided at the joint of the first semicircular cover 6 and the second semicircular cover 7. A rubber sealing ring 26 is fixedly provided along the edge of the bottom end of the positioning plate 24. A rubber sealing gasket 28 is fixedly provided on the end face of the positioning plate 24 facing the semicircular ring 18. When the first semicircular cover 6 and the second semicircular cover 7 are wrapped around the outer surface of the slip ring housing 3, the positioning plates 24 need to be aligned with the through-hole 25. Then, the mating sealing cover 8 is installed on the protective cover 5. The mating sealing cover 8 provides good sealing at the joint of the first semicircular cover 6 and the second semicircular cover 7. The shielding, combined with the rubber sealing ring 26 tightly abutting against the outer surface of the first semicircular cover 6 and the second semicircular cover 7, effectively ensures the sealing performance of the joint. In addition, the positioning plate 24 is fixedly provided with rubber sealing gaskets 28 on the end face facing the semicircular ring 18. The subsequent semicircular ring 18 is installed on the first semicircular cover 6 and the second semicircular cover 7. At this time, the rubber sealing gasket 28 contacts the end face of the semicircular ring 18, further preventing moisture and salt spray in the working environment of the slip ring from flowing through the gap between the first semicircular cover 6 and the second semicircular cover 7, so that the moisture and salt spray in the working environment of the slip ring remain on the outer surface of the slip ring housing 3, causing corrosion of the slip ring housing 3.

[0030] In practical operation, a protective cover 5 is directly fitted onto the slip ring housing 3, and the protective cover 5 is divided into a semi-circular cover 6 and a semi-circular cover 7. The semi-circular cover 6 and the semi-circular cover 7 are spliced ​​and wrapped around the outer surface of the slip ring housing 3. Therefore, during the use of the communication slip ring, the surface needs to be covered with a protective cover to ensure that the working environment is clean enough, so as to improve the corrosion resistance of the wind turbine communication slip ring, ensure that the wind turbine communication slip ring can be used effectively for a long time, and provide good protection for the signal transmission components inside the wind turbine communication slip ring. Through the sealing reinforcement, two sealing reinforcements are wrapped around the two ends of the outer surface of the slip ring housing 3, and the sealing reinforcements are also wrapped around the two ends of the protective cover 5. Therefore, after the protective cover 5 is installed, gaps are avoided between the two ends of the protective cover 5 and the slip ring housing 3, so that moisture and salt spray in the working environment of the slip ring remain on the outer surface of the slip ring housing 3, causing corrosion of the slip ring housing 3, thereby further improving the protection performance of the slip ring housing 3. In Figure 4, the shape of the rubber sealing ring is similar to that of the butt sealing cover plate, and it is stuck to the bottom of the butt sealing cover plate.

[0031] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wind turbine communication slip ring, characterized in that, The device includes a rotor (1), a stator (2), and a slip ring housing (3). The slip ring housing (3) carries signal transmission components. The rotor (1) and stator (2) are connected to each other at opposite ends. The slip ring housing (3) is fitted onto the other end of the stator (2). An encoder (4) is installed on the other end of the slip ring housing (3). An expansion sealing ring (23) is provided at the connection between the slip ring housing (3) and the encoder (4). A protective component is provided on the outside of the slip ring housing (3). The protective component includes a protective cover (5) fitted on the outer surface of the slip ring housing (3). The protective cover (5) is divided into a semi-circular cover one (6) and a semi-circular cover two (7). A mating sealing cover (8) is provided at the mating point of the semi-circular cover one (6) and the semi-circular cover two (7). A threaded mounting hole (9) is provided on the mating sealing cover (8). A semi-circular sealing ring (10) is pasted on both ends of the inner side of the semi-circular cover one (6) and the semi-circular cover two (7). A sealing reinforcement is fitted on both ends of the outer surface of the protective cover (5).

2. The wind turbine communication slip ring according to claim 1, characterized in that, A rotor adapter (11) is installed at the other end of the rotor (1). A rubber buffer pad (12) is provided at the rear end of the rotor adapter (11). A rotor cable interface (13) is also provided at the rear end of the rotor adapter (11). A flexible sealing ring (22) is provided at the connection between the rotor (1) and the stator (2).

3. The wind turbine communication slip ring according to claim 2, characterized in that, The stator (2) is provided with a stator adapter (14), and the stator adapter (14) is provided with a stator cable interface.

4. A wind turbine communication slip ring according to claim 3, characterized in that, The sealing reinforcement includes an outer sealing ring (15), which includes an upper sealing ring (16) and a lower sealing ring (17). Both the upper sealing ring (16) and the lower sealing ring (17) include a semi-circular ring (18) sleeved on both ends of the outer side of the protective cover (5) and a secondary semi-circular ring (19) sleeved on both ends of the outer side of the slip ring housing (3).

5. A wind turbine communication slip ring according to claim 4, characterized in that, The semicircular ring (18) and the secondary semicircular ring (19) are integrated, and the inner side of both the semicircular ring (18) and the secondary semicircular ring (19) is provided with a secondary semicircular sealing ring (27). The outer side wall of the semicircular ring (18) is fixed with an installation piece (20), which is fixed to the outer end surfaces of the protective cover (5) by screws.

6. A wind turbine communication slip ring according to claim 5, characterized in that, Each of the sub-semi-circular rings (19) is fixed with a sub-mounting piece (21), and the sub-mounting pieces (21) are fixed together with bolts.

7. A wind turbine communication slip ring according to claim 6, characterized in that, Multiple positioning plates (24) are fixedly provided on the outer surface of the slip ring housing (3). A through-hole (25) for the positioning plate (24) is provided at the joint of the first semicircular cover (6) and the second semicircular cover (7). A rubber sealing ring (26) is fixedly provided at the bottom edge of the positioning plate (24). A rubber sealing gasket (28) is fixedly provided on the end face of the positioning plate (24) facing the semicircular ring (18).

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