Rotor mechanism and current collector
By designing a combined rotor mechanism and adopting a combined structure of the rotor ring and conductive shrapnel, the problem of excessive temperature and frequent maintenance caused by local heating of the conductive slip ring in wind power generation equipment is solved, and high current conduction with high stability, low temperature rise and low linear loss is achieved.
Patent Information
- Application Number
- CN202421521352.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The temperature of the conductive slip ring in wind power generation equipment is too high due to local heating, and the existing conductive slip ring structure requires frequent maintenance and maintenance, and the carbon brushes are seriously worn and the maintenance cost is high.
A rotor mechanism is designed, adopting a combined structure, including a rotor ring and a rotor terminal strip. The rotor ring is equipped with an electric shock surface. It can achieve stable conductivity through the fixed connection between the rotor fixing ring and the rotor contact ring, and realize the conduction of a large current through the rotation of the conductive shrapnel and the stator layer.
This design achieves high-stability, low temperature rise, low linear loss, high current conduction, extends service life and reduces maintenance frequency and costs.
Smart Images
Figure CN222980995U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wind power generation, and particularly relates to a rotor mechanism and a current collecting device. Background Art
[0002] Due to the particularity of the wind power generation field, local heating will inevitably occur during the operation of the conductive slip ring, resulting in too high an internal temperature of the conductive slip ring; in addition, the existing conductive slip ring structure needs to be frequently overhauled and maintained to ensure the stable operation of the conductive slip ring. The conductive mode of the conductive slip ring is often through carbon brushes, such as the carbon brush rotating and abutting against the metal or the carbon brush rotating and abutting against the carbon brush to achieve the dynamic transmission of current. However, the carbon brushes are severely worn and need to be frequently replaced. The wind power generation equipment is large in size, and there are problems of difficult maintenance and high maintenance cost.
[0003] Therefore, there is an urgent need for a rotor conductive structure that can withstand high current, has low line loss, low temperature rise, stable structure, long service life, and less overhaul and maintenance. Summary of the Utility Model
[0004] In view of the above deficiencies of the prior art, the utility model provides a rotor mechanism and a current collecting device applicable to the yaw field of a fan, which have the advantages of being simple and convenient, low cost, high stability, and long service life.
[0005] To achieve the above object, the utility model provides a rotor mechanism for a current collecting device. The rotor mechanism includes a plurality of rotor rings and a plurality of rotor terminal rows. Each rotor ring includes a rotor fixed ring and a rotor contact ring. The rotor fixed ring is fixedly connected to the upper surface of the rotor contact ring, and each rotor ring is provided with a contact surface.
[0006] Preferably, a plurality of through holes are formed in the rotor fixed ring, and a plurality of installation grooves are formed in the rotor contact ring. One end of the rotor terminal row passes through the through holes and is fixedly connected to the installation grooves of the rotor contact ring.
[0007] Preferably, the rotor rings are arranged at concentric intervals, and a gap is formed between two adjacent rotor rings.
[0008] The utility model provides a current collecting device, which includes:
[0009] A rotor mechanism, including the rotor mechanism as described above;
[0010] A stator mechanism, the stator mechanism includes a plurality of stator layers, each stator layer includes a plurality of stator rings, a plurality of stator terminal rows and a plurality of conductive elastic sheets, and each stator layer is provided with a conductive surface;
[0011] A conductive elastic sheet, which is fixedly installed on the stator ring and is located between the rotor layer and the stator layer;
[0012] Wherein, one rotor layer and one stator layer are respectively in rotational abutment with the conductive elastic sheet to electrically conduct the conductive surface and the contact surface.
[0013] Preferably, the conductive elastic sheet includes a substrate, a first elastic arm, a second elastic arm, a first bending portion and a second bending portion. The upper half of one side of the substrate extends outward and upward to form the first elastic arm, and the free end of the first elastic arm extends and bends to form the first bending portion. The lower half of the other side of the substrate extends outward and upward to form the second elastic arm, and the free end of the second elastic arm extends and bends to form the second bending portion.
[0014] The present invention also provides a current collecting device, which is arranged in the engine room and is connected to the generator.
[0015] The beneficial effects of the present invention are as follows:
[0016] The rotor mechanism of the present invention adopts a combined structure. The rotor ring is the main component of the rotor mechanism. The fixed connection between the rotor fixing ring and the rotor contact ring ensures the stability of the rotor mechanism, plays a role of fixed support, and realizes the stable conduction of the rotor mechanism. Each rotor ring is provided with a contact surface, and the existence of the contact surface ensures the passage of the current of the current collecting device. A plurality of rotor rings together constitute the rotor mechanism, which can smoothly realize the conduction of large current. This combined structure can greatly reduce the material consumption and lower the production cost; at the same time, when wear and other problems occur and need to be repaired, it can be quickly disassembled, replaced and repaired. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.
[0018] Figure 1 It is a schematic diagram of the rotor mechanism according to an embodiment of the present invention;
[0019] Figure 2 It is a schematic diagram of the structure of the rotor fixing ring according to an embodiment of the present invention;
[0020] Figure 3 It is a schematic diagram of the structure of the rotor contact ring according to an embodiment of the present invention;
[0021] Figure 4Schematic diagram of the rotor terminal block structure according to an embodiment of the present utility model;
[0022] Figure 5 Schematic diagram of the current collector device structure according to an embodiment of the present utility model;
[0023] Figure 6 Schematic diagram of the conductive elastic sheet structure according to an embodiment of the present utility model.
[0024] Explanation of the reference numerals in the drawings
[0025] 10. Rotor mechanism; 11. Rotor terminal block; 12. Rotor fixing ring; 13. Rotor contact ring; 14. Through hole; 15. Installation groove; 20. Stator mechanism; 21. Stator ring; 22. Stator terminal block; 30. Conductive elastic sheet; 31. Substrate; 32. First elastic arm; 33. First bending part; 34. Second elastic arm; 35. Second bending part; 36. Notch.
[0026] The realization, functional features and advantages of the object of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments
[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0028] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings), rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific manner, and therefore cannot be understood as a limitation of the present utility model. If the specific posture changes, the directional indication will also change accordingly.
[0029] In the present utility model, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0030] Wind power generation is carried out through wind power generation equipment. The wind power generation equipment at least includes a wind turbine, a generator and a tower barrel. Wind power generation does not require the use of fuel and does not produce radiation or air pollution.
[0031] Due to the particularity of the wind power generation field, local heating will inevitably occur during the operation of the conductive slip ring, resulting in too high internal temperature of the conductive slip ring; in addition, the existing conductive slip ring structure needs to be frequently overhauled and maintained to ensure the stable operation of the conductive slip ring. The conductive method of the conductive slip ring is often through carbon brushes, such as the carbon brush rotating and abutting against the metal or the carbon brush rotating and abutting against the carbon brush to achieve the dynamic transmission of current. However, the carbon brushes are severely worn and need to be frequently replaced. The wind power generation equipment is large in size, and there are problems of difficult maintenance and high maintenance cost.
[0032] Therefore, there is an urgent need for a rotor conductive structure that can withstand high current, has low line loss, low temperature rise, stable structure, long service life, and requires less overhaul and maintenance.
[0033] The utility model provides a rotor mechanism and a current collector device applicable to the yaw field of a wind turbine, which have the advantages of being simple and convenient, low cost, high stability, and long service life.
[0034] Please refer to Figure 1 , the utility model provides a rotor mechanism 10 for a current collector device. The rotor mechanism 10 includes a plurality of rotor rings and a plurality of rotor terminal rows 11. The rotor ring includes a rotor fixed ring 12 and a rotor contact ring 13. The rotor fixed ring 12 is fixedly connected to the upper surface of the rotor contact ring 13, and each rotor ring is provided with a contact surface.
[0035] Please refer to Figure 1 , the rotor mechanism 10 of the technical solution of the utility model is used for a current collector device for conductive connection. The rotor mechanism 10 adopts a combined structure. The rotor ring is the main component of the rotor mechanism 10. The fixed connection between the rotor fixed ring 12 and the rotor contact ring 13 ensures the stability of the rotor mechanism 10, plays a role of fixed support, and realizes the stable conduction of the rotor mechanism 10. Each rotor ring is provided with a contact surface, and the existence of the contact surface ensures the passage of current of the current collector device. A plurality of rotor rings together constitute the rotor mechanism 10, and the conduction of large current can be smoothly achieved. This combined structure can greatly reduce the material consumption and reduce the production cost; at the same time, when wear and other problems occur and need to be repaired, it can be quickly disassembled, replaced and repaired.
[0036] In actual implementation, the sizes of the rotor fixed ring 12 and the rotor contact ring 13 are selected according to the actual use situation, and no specific limitation is made here.
[0037] In actual implementation, the number of rotor rings is not specifically limited, preferably 6; the number of rotor terminal rows 11 is not specifically limited, preferably 12.
[0038] In actual implementation, the rotor fixing ring 12 and the rotor contact ring 13 are of the same size but different materials. The material of the rotor fixing ring 12 is not specifically limited, and preferably aluminum or stainless steel.
[0039] In actual implementation, the material of the rotor contact ring 13 is not specifically limited, and preferably copper.
[0040] In actual implementation, the fixing connection method between the rotor fixing ring 12 and the rotor contact ring 13 is not specifically limited, and preferably welding.
[0041] In one embodiment, a plurality of through holes 14 are provided on the rotor fixing ring 12, and a plurality of mounting grooves 15 are provided on the rotor contact ring 13. One end of the rotor terminal row 11 passes through the through holes 14 and is fixedly connected to the mounting grooves 15 of the rotor contact ring 13.
[0042] Please refer to Figure 1 、 Figure 2 and Figure 3 , in this embodiment, a plurality of through holes 14 are provided on the rotor fixing ring 12 to facilitate the passing of the rotor terminal row 11 and improve stability. A plurality of mounting grooves 15 are provided on the rotor contact ring 13, and the through holes 14 and the mounting grooves 15 are fixedly connected, realizing the consistency of the through holes 14 and the mounting grooves 15 in the vertical position.
[0043] In actual implementation, the number of the through holes 14 is not specifically limited, and preferably 2. The number of the mounting grooves 15 is the same as that of the through holes 14, which is 2.
[0044] In actual implementation, the fixing connection method between the through holes 14 and the mounting grooves 15 is not specifically limited, and preferably welding.
[0045] In one embodiment, the rotor rings are arranged at concentric circles at intervals, and a gap is formed between two adjacent rotor rings.
[0046] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , in this embodiment, the concentric circle arrangement of the rotor rings simplifies the structure of the rotor mechanism, can effectively utilize the space of the overall structure, realizes the arrangement of as many rotor mechanisms as possible in a limited space, improves the conduction efficiency, and improves the heat dissipation effect and heat dissipation capacity.
[0047] A current collecting device proposed by the present utility model is used for wind power generation. The current collecting device includes:
[0048] The rotor mechanism 10, including the rotor mechanism 10;
[0049] The stator mechanism 20 includes a plurality of stator layers. Each stator layer includes a plurality of stator rings 21, a plurality of stator terminal rows 22, and a plurality of conductive elastic pieces 30. Each stator layer is provided with a conductive surface;
[0050] The conductive elastic piece 30 is fixedly installed on the stator ring 21. The conductive elastic piece 30 is located between the rotor layer and the stator layer;
[0051] Wherein, a rotor layer and a stator layer are respectively in rotational abutment with the conductive elastic piece 30 to electrically conduct the conductive surface and the contact surface.
[0052] Please refer to Figure 1 and Figure 5 For the current collector device of the present utility model, the rotor mechanism 10 includes a rotor ring, and the stator mechanism 20 includes a stator ring 21. Each rotor ring and stator ring 21 adopt a combined structure, which not only ensures the fixing and supporting functions, but also can greatly reduce the amount of copper used and lower the production cost; at the same time, when wear and other problems occur and need to be repaired, it can be quickly disassembled, replaced and repaired. The conductive elastic piece 30 connects the stator mechanism 20 and the rotor mechanism 10. While ensuring smooth connection, it can smoothly pass a large current between the rotor and the stator, saving installation space and achieving a larger current-carrying capacity.
[0053] In actual implementation, the sizes of the stator ring 21 and the rotor ring are selected according to actual usage conditions and are not specifically limited herein.
[0054] In an embodiment, the conductive elastic piece 30 includes a base piece 31, a first elastic arm 32, a second elastic arm 34, a first bending portion 33, and a second bending portion 35. The upper half of one side of the base piece 31 extends outward and upward to form the first elastic arm 32. The free end of the first elastic arm 32 extends and bends to form the first bending portion 33. The lower half of the other side of the base piece 31 extends outward and upward to form the second elastic arm 34. The free end of the second elastic arm 34 extends and bends to form the second bending portion 35.
[0055] Please refer to Figure 5 and Figure 6, in this embodiment, the substrate 31 of the conductive elastic sheet 30 connects the first elastic arm 32 and the second elastic arm 34, providing support during rotation in different directions, without jamming during commutation. The first elastic arm 32 and the second elastic arm 34 are asymmetrically arranged on both sides of the substrate 31 respectively, which enables the staggered installation of the conductive elastic sheet 30, not only saving installation space but also achieving a larger current-carrying capacity; the first elastic arm 32 and the second elastic arm 34 provide support between the rotor mechanism 10 and the stator mechanism 20, and at the same time have a certain elasticity, generating a certain deformation under pressure, so that the first bending portion 33 and the second bending portion 35 of the conductive elastic sheet 30 are in close contact with the rotor contact ring 13, with good contact and good electrical conductivity. The first bending portion 33 and the second bending portion 35 are asymmetrically arranged on both sides of the substrate 31 respectively, which can ensure that when the rotation direction of the rotor mechanism 10 is commutated, the conductive elastic sheet 30 will not jam, extending its service life and enhancing the stability and safety of the structure.
[0056] During actual implementation, the size of the substrate 31 is selected according to the actual usage situation and will not be specifically limited here.
[0057] During actual implementation, the material of the conductive elastic sheet 30 is not limited to beryllium bronze, and can also include various alloy coppers and other materials. The surface of the bending portion of the conductive elastic sheet 30 can be welded or silver contacts can be added, improving the electrical conductivity while enhancing the wear resistance of the elastic sheet, which can improve the overall performance and extend the service life.
[0058] During actual implementation, the vertical height of the first elastic arm 32 and the second elastic arm 34 is greater than or equal to the height of the bending portion.
[0059] During actual implementation, a notch 36 can be provided at the connection between the substrate 31 of the conductive elastic sheet 30 and the first elastic arm 32, which can reduce the impact on the overall conductive elastic sheet 30 when the elastic arm is compressed to generate a large degree of deformation.
[0060] The present utility model also proposes a current collector device (not shown in the figure). The specific structure of this current collector device refers to the above embodiment. Since this current collector device adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one. Among them, the nacelle is connected to the tower, and a generator is provided in the nacelle. The current collector device is arranged in the nacelle and is connected to the generator.
[0061] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.
Claims
1. A rotor mechanism, characterized in that: The rotor mechanism comprises a plurality of rotor rings and a plurality of rotor terminal rows. The rotor ring comprises a rotor fixing ring and a rotor contact ring. The rotor fixing ring is fixedly connected to the rotor contact ring. Each of the rotor rings is provided with an electric contact surface.
2. The rotor mechanism according to claim 1, characterized in that: The rotor fixing ring is provided with a plurality of through holes, the rotor contact ring is provided with a plurality of mounting grooves, and one end of the rotor terminal row passes through the through holes and is fixedly connected to the mounting groove of the rotor contact ring.
3. The rotor mechanism according to claim 1, characterized in that: The rotor rings are arranged in concentric circles at intervals, and a gap is formed between two adjacent rotor rings.
4. A power collection device for wind power generation, characterized in that: The current collecting device comprises: A rotor mechanism, comprising the rotor mechanism as claimed in claim 1; A stator mechanism, the stator mechanism comprising a plurality of stator layers, each of the stator layers comprising a plurality of stator rings and a plurality of stator terminal rows, and each of the stator layers being provided with a conductive surface; A conductive spring sheet, the conductive spring sheet is fixedly mounted on the stator ring, and the conductive spring sheet is located between the rotor mechanism and the stator layer; The rotor mechanism and the stator layer are respectively rotatably in contact with the conductive spring sheet to electrically connect the conductive surface and the contact surface.
5. A current collector according to claim 4, characterized in that: The conductive spring sheet includes a substrate, a first elastic arm, a second elastic arm, a first bent portion and a second bent portion. The upper half of one side of the substrate extends outward and upward to form the first elastic arm, and the free end of the first elastic arm extends and bends to form the first bent portion. The lower half of the other side of the substrate extends outward and upward to form the second elastic arm, and the free end of the second elastic arm extends and bends to form the second bent portion.
6. A current collector according to claim 4, characterized in that: The power collection device is arranged in the nacelle and connected to the generator.