Current collector and wind turbine generator system

Abstract

The application discloses a current collecting device and a wind turbine generator unit. The current collecting device comprises a stator mechanism, a locking assembly and a rotor mechanism. The locking assembly is connected to the outer wall of the stator mechanism. One end of the locking assembly is provided with a rolling element. The rotor mechanism is detachably connected to the stator mechanism in a rotating mode. The current collecting device has a locking state in which the locking assembly locks the rotor mechanism and a release state in which the locking assembly releases the rotor mechanism. In the locking state, the rolling element is in rolling abutment with the rotor mechanism. In the release state, the rolling element is away from the rotor mechanism. The current collecting device can guarantee axial positioning and pressure connection of the rotor mechanism and the stator mechanism and can be conveniently disassembled. The current collecting device effectively reduces maintenance cost.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and in particular to a power collection device and a wind turbine generator set using the power collection device. Background Technology

[0002] To maximize power generation efficiency, wind turbines need to continuously yaw to align with the wind direction. Therefore, the nacelle rotates relative to the tower. This requires a slip ring structure to dynamically transfer current between the rotating nacelle and the stationary tower. During operation, the turbine needs to yaw due to changes in wind direction to maximize wind energy utilization.

[0003] Currently, the slip ring structure used in wind turbines is often complex, bulky, and has high maintenance costs. Furthermore, the rotor and stator mechanisms of the slip ring structure cannot be axially positioned, and disassembly is inconvenient, leading to maintenance difficulties. Summary of the Invention

[0004] The main objective of this invention is to provide a current collection device and a wind turbine generator set, which can both ensure the axial positioning and pressing of the rotor mechanism and the stator mechanism and facilitate disassembly. This current collection device effectively reduces maintenance costs.

[0005] To achieve the above objectives, the present invention proposes a current collection device for use in wind turbine generator sets, the current collection device comprising:

[0006] Stator mechanism;

[0007] A locking assembly, wherein the locking assembly is connected to the outer wall of the stator mechanism, and one end of the locking assembly is provided with a rolling element; and

[0008] A rotor mechanism, wherein the rotor mechanism is detachably rotatably connected to the stator mechanism;

[0009] The current collector has a locked state in which the locking component locks the rotor mechanism and a released state in which the locking component releases the rotor mechanism;

[0010] In the locked state, the rolling element rolls against the rotor mechanism;

[0011] In the released state, the rolling element is away from the rotor mechanism.

[0012] In one embodiment, the locking assembly includes:

[0013] A fastener, the fastener being connected to the outer wall of the stator mechanism;

[0014] A locking member, movably connected to the fixing member, wherein one end of the locking member is provided with the rolling element; and

[0015] An adjusting member, which is rotatably connected to the locking member and also rotatably connected to the fixing member;

[0016] The adjusting member drives the locking member to lock or release the rotor mechanism, so that the rolling member rolls against or moves away from the rotor mechanism.

[0017] In one embodiment, the locking member has a mounting hole at the end away from the adjusting member, the rolling member is a cam bearing, the bolt end of the cam bearing passes through the mounting hole, and in the locked state, the bearing end of the cam bearing rolls against the rotor mechanism.

[0018] When the rotor mechanism rotates relative to the stator mechanism, the bearing end rolls with the rotor mechanism.

[0019] In one embodiment, the locking member has a movable groove, a rotating shaft is provided in the movable groove, the fixing member has a rotating connecting ear protruding from the movable groove, one end of the adjusting member is rotatably connected to the rotating connecting ear through the rotating shaft and rotatably sleeved on the rotating shaft, and the other end of the adjusting member has a handle;

[0020] The adjusting member drives the locking member to move relative to the fixing member, so that the rotating connecting ear moves along the movable groove.

[0021] In one embodiment, the locking member has a locking hole, the fixing member has a moving hole, and the locking assembly further includes an anti-loosening member, which is sequentially disposed in the moving hole and the locking hole;

[0022] The adjusting member drives the locking member to move relative to the fixing member, so that the anti-loosening member moves along the moving hole.

[0023] In one embodiment, the locking assembly includes a plurality of locking assemblies, which are spaced apart along the circumferential direction of the outer wall of the stator mechanism.

[0024] The present invention also proposes a wind turbine generator set, the wind turbine generator set comprising:

[0025] Tower;

[0026] The engine room, rotatably connected to the tower, is equipped with a generator; and

[0027] The aforementioned current collector has a rotor mechanism located in the nacelle and connected to the generator, and a stator mechanism connected to the tower.

[0028] The current collector of this invention detachably and rotatably connects the rotor mechanism and the stator mechanism, thereby enabling both rotation of the rotor mechanism relative to the stator mechanism and separation of the rotor mechanism from the stator mechanism. Simultaneously, by providing a locking assembly on the outer wall of the stator mechanism, with a rolling element at one end of the locking assembly, the rotor mechanism can be locked or released using the locking assembly. This allows the current collector to have both locked and released states. In the locked state, the rolling element rolls against the rotor mechanism; in the released state, the rolling element moves away from the rotor mechanism. Thus, the locking assembly ensures both axial positioning and pressing of the rotor and stator mechanisms while facilitating disassembly of the current collector, effectively reducing maintenance costs. The current collector of this invention not only improves stability and greatly simplifies the overall structure of the current collector, but also enhances the safety performance of high-current slip rings and facilitates later maintenance and upkeep. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the current collection device in one embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the locking assembly in one embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the rotor mechanism in one embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the rotor component in one embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the structure of the separator component in one embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the stator mechanism in one embodiment of the present invention;

[0036] Figure 7 This is a top view of the stator mechanism in one embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the stator component in one embodiment of the present invention;

[0038] Figure 9 This is a top view of the stator component in one embodiment of the present invention;

[0039] Figure 10 for Figure 9 Enlarged view of point A in the middle;

[0040] Figure 11 This is a partial cross-sectional schematic diagram of the rotor and stator connection in one embodiment of the present invention.

[0041] Explanation of icon numbers:

[0042]

[0043]

[0044] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0046] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0047] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0048] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0049] To maximize power generation efficiency, wind turbines need to continuously yaw to align with the wind direction. Therefore, the wind turbine nacelle rotates relative to the tower. During wind turbine operation, the turbine needs to yaw due to changes in wind direction in order to maximize the utilization of wind energy for power generation. At this time, with the rotating part circuit and the stationary part circuit connected, the current needs to be dynamically transmitted through the collector ring structure.

[0050] Currently, the slip ring structures used in wind turbines are often complex, bulky, and costly to maintain. Furthermore, the rotor and stator mechanisms of the slip ring structure cannot be axially positioned, and disassembly is inconvenient, leading to maintenance difficulties. Simultaneously, slip ring structures typically achieve dynamic current transmission through the relative rotation of contacting conductive media, such as the rotational contact between carbon brushes and metal or between carbon brushes. However, the prolonged rotation of the wind turbine often causes significant heat generation due to prolonged friction between the two contacting conductive media, coupled with the passage of large currents, reducing the overall safety and reliability of the slip ring structure. Related technologies employ dedicated cooling devices to dissipate heat and cool the slip ring structure; however, these devices complicate the overall structure and make installation and maintenance difficult.

[0051] In addition to the high-current output lines of the wind turbines, there are numerous control lines and power transmission lines connecting the wind turbines at the base and top of the tower. The slip ring technology used in related technologies cannot meet the requirements for connecting all these lines via slip rings. After the wind turbine has been running for a period of time, it needs to be stopped and the cables disconnected to prevent them from twisting and breaking. Furthermore, the conductive slip ring structures used in related technologies are often complex, prone to wear, unstable, difficult to install and maintain, or unsuitable for high-current applications.

[0052] Based on the above problems, the present invention proposes a power collection device 100. It is understood that this power collection device 100 is used to transmit and collect electricity generated by the generator in a wind turbine generator set. Power transmission can be performed through dynamic contact, where dynamic contact means that two relatively moving power transmission mechanisms remain in contact.

[0053] The current collector 100 of this application is suitable for wind turbine yaw applications where the rotor rotation speed is slow, it can withstand large currents, and has a stable structure. It provides a novel conductive slip ring structure with a long service life in the extreme environment of wind turbines. During the operation of the current collector 100, it can not only ensure the axial positioning between the rotor mechanism 2 and the stator mechanism 1, but also ensure that the rotor mechanism 2 and the stator mechanism 1 can be easily disassembled during maintenance.

[0054] Please refer to the reference. Figures 1 to 11As shown, in this embodiment of the invention, the current collector 100 includes a stator mechanism 1, a locking assembly 4, and a rotor mechanism 2. The locking assembly 4 is connected to the outer wall of the stator mechanism 1, and one end of the locking assembly 4 is provided with a rolling element 425. The rotor mechanism 2 is detachably rotatably connected to the stator mechanism 1. The current collector 100 has a locked state in which the locking assembly 4 locks the rotor mechanism 2 and a released state in which the locking assembly 4 releases the rotor mechanism 2. In the locked state, the rolling element 425 rolls against the rotor mechanism 2. In the released state, the rolling element 425 moves away from the rotor mechanism 2.

[0055] In this embodiment, the stator mechanism 1 is provided with a receiving groove 111, and a conductive surface is provided in the receiving groove 111. The rotor mechanism 2 is provided with a contact surface. The rotor mechanism 2 is detachably fitted onto the opening of the receiving groove 111 and is rotatably connected to the stator mechanism 1 so that the contact surface and the conductive surface abut against each other and conduct electricity. It can be understood that the current collector 100 is applied to a wind turbine generator set. The rotor mechanism 2 of the current collector 100 is connected to the yaw mechanism of the wind turbine through a cable and rotates accordingly. The stator mechanism 1 is fixedly connected to the wind turbine tower and is the stationary mechanism of the stator mechanism 1. By bringing the conductive surface of the stator mechanism 1 into contact with the contact surface of the rotor mechanism 2, the conductive surface and the contact surface remain in contact or are in abutting state when the rotor mechanism 2 rotates or rotates relative to the stator mechanism 1, thereby realizing the conduction of electricity between the rotor mechanism 2 and the stator mechanism 1.

[0056] Understandably, the stator mechanism 1 is used to install, support, and fix components such as the rotor mechanism 2 and the locking assembly 4; that is, the stator mechanism 1 provides a mounting base for components such as the rotor mechanism 2 and the locking assembly 4. In this embodiment, the stator mechanism 1 is provided with a receiving groove 111, which can be a recessed structure or a through-slot structure, and is not limited here. Optionally, the receiving groove 111 of the stator mechanism 1 has a bottom wall and side walls.

[0057] In this embodiment, the rotor mechanism 2 is detachably connected to the stator mechanism 1, meaning that the rotor mechanism 2 can be connected to the stator mechanism 1 or detached from it. Furthermore, when the rotor mechanism 2 is connected to the stator mechanism 1, the rotor mechanism 2 is rotatably connected to the stator mechanism 1, meaning that the rotor mechanism 2 can rotate relative to the stator mechanism 1.

[0058] Understandably, when the rotor mechanism 2 is closed in the slot of the receiving groove 111, the rotor mechanism 2 is rotatably connected to the stator mechanism 1. At this time, part of the rotor mechanism 2 is accommodated in the receiving groove 111 so that the contact surface and the conductive surface are in contact and conduction. Thus, when the rotor mechanism 2 rotates or rotates relative to the stator mechanism 1, the contact surface and the conductive surface always remain in contact, thereby forming dynamic power transmission.

[0059] In this embodiment, by providing a locking assembly 4 on the outer wall of the stator mechanism 1, when the rotor mechanism 2 is closed in the slot of the receiving groove 111, the locking assembly 4 locks or positions the rotor mechanism 2 to the stator mechanism 1, so that the rotor mechanism 2 and the stator mechanism 1 can be positioned and limited in the axial direction without affecting the rotation of the rotor mechanism 2 relative to the stator mechanism 1. It can be understood that by locking or releasing the rotor mechanism 2 by the locking assembly 4, the current collector 100 has a locked state and a released state.

[0060] Understandably, by providing a rolling element 425 at one end of the locking assembly 4, the rolling element 425 rolls against the rotor mechanism 2 when the current collector 100 is in the locked state, thus effectively ensuring that the rotor mechanism 2 rotates or rotates relative to the stator mechanism 1; in the released state, the rolling element 425 moves away from the rotor mechanism 2, thereby facilitating the disassembly of the rotor mechanism 2 and the stator mechanism 1, simplifying the structure, and making maintenance easier.

[0061] The current collector 100 of the present invention detachably rotates the rotor mechanism and the stator mechanism, thereby enabling both rotation of the rotor mechanism relative to the stator mechanism and disassembly and separation of the rotor mechanism and the stator mechanism. Simultaneously, by providing a locking assembly 4 on the outer wall of the stator mechanism 1, and a rolling element 425 at one end of the locking assembly 4, the rotor mechanism 2 can be locked or released using the locking assembly 4. This allows the current collector 100 to have both a locked and a released state. In the locked state, the rolling element 425 rolls against the rotor mechanism 2; in the released state, the rolling element 425 moves away from the rotor mechanism 2. Thus, the locking assembly 4 ensures both axial positioning and pressing of the rotor mechanism 2 and the stator mechanism 1, and facilitates the disassembly of the current collector 100, effectively reducing maintenance costs. The current collector 100 of the present invention not only improves stability and greatly simplifies the overall structure of the current collector 100, but also enhances the safety performance of the high-current collector ring and facilitates later maintenance and upkeep.

[0062] Understandably, the locking assembly 4 can also be provided on the rotor mechanism 2. In this way, when the rotor mechanism 2 is detachably covered by the slot 111 of the stator mechanism 1 and rotates with the stator mechanism 1, the locking assembly 4 can lock or release the stator mechanism 1, so that the current collector 100 has a locked state and a released state. In the locked state, the rolling element 425 rolls against the stator mechanism 1. In the released state, the rolling element 425 moves away from the stator mechanism 1. Thus, the locking assembly 4 can ensure the axial positioning and pressing of the rotor mechanism 2 and the stator mechanism 1, and facilitate the disassembly of the current collector 100, so that the current collector 100 can effectively reduce the maintenance cost.

[0063] In one embodiment, the locking assembly 4 includes a fixing member 41, a locking member 42, and an adjusting member 43. The fixing member 41 is connected to the outer wall of the stator mechanism 1, the locking member 42 is movably connected to the fixing member 41, and one end of the locking member 42 is provided with a rolling member 425. The adjusting member 43 is rotatably connected to the locking member 42 and rotatably connected to the fixing member 41. The adjusting member 43 drives the locking member 42 to lock or release the rotor mechanism 2, so that the rolling member 425 rolls against or moves away from the rotor mechanism 2.

[0064] In this embodiment, as Figure 1 and Figure 2 As shown, the fastener 41 can be a fixed plate structure. The fastener 41 can be fixedly connected to the outer wall of the stator mechanism 1, or it can be integrally formed on the outer wall of the stator mechanism 1. No limitation is made here. By setting the fastener 41 on the outer wall of the slot of the stator mechanism 1 adjacent to the receiving groove 111, it is convenient for one end of the locking member 42 to protrude from the end face of the stator mechanism 1 adjacent to the slot of the receiving groove 111.

[0065] Understandably, the locking member 42 is movably mounted on the fixing member 41, so that one end of the locking member 42 is provided with a rolling member 425, and is rotatably connected to the locking member 42 through the adjusting member 43, and is rotatably connected to the fixing member 41. In this way, the adjusting member 43 can be used to drive the locking member 42 to lock or release the rotor mechanism 2, so that the rolling member 425 rolls against or moves away from the rotor mechanism 2.

[0066] In this embodiment, the locking member 42 can be a strip-shaped or plate-shaped structure, and the locking member 42 and the fixing member 41 can be slidably connected or movablely connected, etc., without limitation. The adjusting member 43 can be a handle structure, which allows the user to operate the adjusting member 43 to make the locking member 42 slide or move relative to the fixing member 41, so that the locking member 42 locks or releases the rotor mechanism 2.

[0067] Understandably, the locking assembly 4 locks and limits the rotor mechanism 2 through the cooperation of the fixing member 41, the locking member 42, and the adjusting member 43, so that the stator mechanism 1 axially limits the rotor mechanism 2 through the locking assembly 4. In this embodiment, by providing a rolling member 425 at one end of the locking member 42, the rolling member 425 rolls against the rotor mechanism 2, which can both achieve limiting installation and reduce wear.

[0068] Optionally, the locking assembly 4 includes multiple locking assemblies 4, which are spaced apart along the circumferential direction of the outer wall of the stator mechanism 1 and surround the opening of the receiving groove 111. It is understood that multiple locking assemblies 4 are provided on the outer wall of the stator mechanism 1 to provide axial positioning of the rotor mechanism 2 and prevent the rotor mechanism 2 from disengaging. The rolling elements 425 on the locking assembly 4 contact the rotor mechanism 2, reducing friction caused by its circumferential movement. This structure allows for rapid pressing, reliable contact, and convenient disassembly, facilitating maintenance.

[0069] In one embodiment, the locking member 42 has a mounting hole 421 at the end away from the adjusting member 43, and the rolling member 425 is a cam bearing. The bolt end of the cam bearing passes through the mounting hole 421. In the locked state, the bearing end 426 of the cam bearing rolls against the rotor mechanism 2. When the rotor mechanism 2 rotates relative to the stator mechanism 1, the bearing end 426 rolls with the rotor mechanism 2.

[0070] Understandable, such as Figure 1 and Figure 2 As shown, the rolling element 425 is configured as a cam bearing. The cam bearing has a bolt end and a bearing end 426 connected together, so that the bolt end of the cam bearing passes through the mounting hole 421, thereby realizing the installation and fixation of the cam bearing. In the locked state, the bearing end 426 of the cam bearing rolls against the rotor mechanism 2. When the rotor mechanism 2 rotates relative to the stator mechanism 1, the bearing end 426 rolls with the rotor mechanism 2. The bearing end 426 can reduce the friction caused by the circumferential movement of the rotor mechanism 2, realize quick pressing, reliable contact, and convenient disassembly, which is beneficial to maintenance.

[0071] Optionally, a fastening adhesive is applied between the inner ring of bearing end 426 and the shaft of the cam bearing to prevent detachment and avoid unnecessary disassembly.

[0072] In one embodiment, such as Figure 1 and Figure 2 As shown, the locking member 42 is provided with a movable groove 422, and a rotating shaft 423 is provided in the movable groove 422. The fixing member 41 is provided with a rotating connecting ear 411 corresponding to the movable groove 422. One end of the adjusting member 43 is rotatably connected to the rotating connecting ear 411 through a rotating shaft 432 and is rotatably sleeved on the rotating shaft 423. The other end of the adjusting member 43 is provided with a handle 431. The adjusting member 43 drives the locking member 42 to move relative to the fixing member 41, so that the rotating connecting ear 411 moves along the movable groove 422.

[0073] Understandably, this arrangement allows the adjusting member 43 to move the locking member 42 relative to the fixed member 41, so that the locking member 42 locks or releases the rotor mechanism 2, so that the rolling member 425 rolls against or moves away from the rotor mechanism 2.

[0074] To prevent the locking member 42 from disengaging from the fixing member 41, in one embodiment, such as Figure 1 and Figure 2 As shown, the locking member 42 is provided with a locking hole 424, the fixing member 41 is provided with a moving hole, and the locking assembly 4 also includes an anti-loosening member 44, which is sequentially inserted into the moving hole and the locking hole 424; wherein, the adjusting member 43 drives the locking member 42 to move relative to the fixing member 41 so that the anti-loosening member 44 moves along the moving hole.

[0075] Understandably, the anti-loosening component 44 can be a nut and bolt mating structure, or other components capable of locking and unlocking. The locking component 42 can be locked onto the fixed component 41 without affecting its movement relative to the fixed component 41 under the action of the adjusting component 43. Optionally, the nut is an anti-loosening nut, and the bolt is a bolt with a hole. The anti-loosening nut and the bolt with a hole cooperate to lock the locking component 42, preventing it from loosening and further improving the stability of the structure. A lead seal can be added to the hole of the bolt with a hole to avoid unnecessary disassembly.

[0076] In this embodiment, the adjusting member 43 is a manual pressing handle. By manually pressing the handle to the vertical position, the locking member 42 is moved down to the structural dead point, thereby locking the rotor mechanism 2 and the stator mechanism 1. By lifting the handle, the locking member 42 is moved up to release the rotor mechanism 2 and the stator mechanism 1. This method can achieve rapid clamping between the rotor mechanism 2 and the stator mechanism 1, preventing abnormal vibration.

[0077] Understandably, the mounting hole provided on the fixing member 41 is blocked by the locking member 42 when the locking member 42 is in the pressed position. The mounting hole of the pin connecting the locking member 42 and the handle is also blocked between the locking member 42 and the fixing member 41. Unless the lead seal is opened, it cannot be disassembled, thus avoiding meaningless disassembly.

[0078] In one embodiment, the stator mechanism 1 includes a stator base 11 and a plurality of stator components 12. The stator base 11 has a cavity with one end open. A locking assembly 4 is connected to the outer wall of the stator base 11 and is disposed adjacent to the opening. The plurality of stator components 12 are arranged concentrically in the cavity, dividing the cavity into a receiving groove 111 and a heat dissipation space. A first gap 1215 is formed between two adjacent stator components 12 to allow the heat dissipation space and the receiving groove 111 to communicate. Each stator component 12 has a conductive surface on the side facing the receiving groove 111. The rotor mechanism 2 includes a plurality of rotor components 21, which are arranged concentrically in the cavity. A second gap is formed between two adjacent rotor components 21. Each rotor component 21 has a contact surface. The rotor mechanism 2 is detachably fitted onto the opening of the receiving groove 111 and is rotatably connected to the stator base 11 so that each rotor component 21 is correspondingly disposed to a stator component 12, and each contact surface abuts against a conductive surface for conduction.

[0079] In this embodiment, as Figure 1 , Figures 3 to 11 As shown, the stator base 11 of the stator mechanism 1 is used to install, support, and fix multiple stator components 12 and rotor mechanism 2, etc., that is, the stator base 11 provides an installation foundation for multiple stator components 12 and rotor mechanism 2, etc. In this embodiment, the stator base 11 has a cavity, which can be a groove structure or a through-slot structure, and is not limited here. Optionally, the stator base 11 is a cylindrical structure with an opening at one end. Multiple stator components 12 form a stator assembly.

[0080] In this embodiment, the cavity of the stator base 11 has a bottom wall and side walls. Multiple stator components 12 of the stator assembly are disposed within the receiving groove 111 via support columns, forming a heat dissipation space with the stator base 11. The conductive surfaces of the multiple stator components 12 and the side walls of the cavity form the receiving groove 111, meaning the conductive surfaces are located on the bottom wall of the receiving groove 111. It is understood that the multiple stator components 12 can be connected to the bottom wall and / or side walls of the cavity via support columns, allowing the multiple stator components 12 of the stator assembly to form a heat dissipation space with the bottom and side walls of the cavity of the stator base 11. This heat dissipation space can be used to fully and effectively dissipate the heat generated by the stator assembly.

[0081] Understandably, the support column can be optionally disposed on the bottom wall of the cavity of the stator base 11 to support the stator assembly. This serves two purposes: firstly, it enables the installation and fixation of the stator assembly, and secondly, it facilitates the formation of a heat dissipation space, thereby improving the heat dissipation effect. In this embodiment, the side of the stator assembly facing away from the support column is provided with a conductive surface, and the rotor mechanism 2 is provided with a contact surface. The rotor mechanism 2 is rotatably connected to the stator base 11 so that the contact surface and the conductive surface abut against each other and conduct electricity. This ensures that when the rotor mechanism 2 rotates or rotates relative to the stator base 11, the contact surface and the conductive surface always remain in contact, thus forming a dynamic power transmission.

[0082] The current collector 100 of the present invention comprises a stator mechanism 1 consisting of a stator base 11, a support column, and a stator assembly. The stator assembly is installed within the cavity of the stator base 11 via the support column, forming a heat dissipation space between the stator assembly and the cavity of the stator base 11. This heat dissipation space is used to dissipate heat from the stator assembly. Simultaneously, the support column further directs the heat from the stator assembly into the heat dissipation space, thereby enhancing the heat dissipation effect. Furthermore, the support column is equipped with a skirt, further increasing its heat dissipation area, thus effectively improving the heat dissipation capacity of the stator mechanism 1. Additionally, a conductive surface is provided on the side of the stator assembly facing away from the support column, and a contact surface is provided on the rotor mechanism 2. The rotor mechanism 2 is rotatably connected to the stator base 11, allowing the contact surface to contact and conduct electricity, thereby achieving dynamic power transfer from the rotor mechanism 2 to the stator mechanism 1. It is understood that the current collector 100 of the present invention not only improves heat dissipation capacity and stability, but also eliminates the need for a separate cooling device, greatly simplifying the overall structure of the current collector 100, improving the safety performance of high-current collector rings, and facilitating later maintenance and upkeep.

[0083] In this embodiment, multiple stator components 12 are rigidly connected to the stator base 11 via support columns. The umbrella skirt on the support column can be a heat-shrinkable umbrella skirt. This umbrella skirt makes the contact between the rotor mechanism 2 and the stator assembly suspended, increasing the heat convection area, which helps dissipate heat from both and facilitates the transmission of large currents.

[0084] To further enhance heat dissipation, the support column may optionally be provided with multiple umbrella-shaped skirts, which are spaced apart along the extension direction of the support column. In this embodiment, the umbrella-shaped skirts may optionally be located in the middle of the support column.

[0085] To further improve ease of assembly and disassembly, the support column and stator component 12 can optionally be detachably connected, such as by snap-fit ​​connection, plug-in fit, screw connection, or pin connection, etc., without limitation. The support column and stator base 11 can optionally be detachably connected, such as by snap-fit ​​connection, plug-in fit, screw connection, or pin connection, etc., without limitation. In this embodiment, the support column and stator component 12 are connected by screws, and the support column and the bottom wall of the stator base 11 are connected by screws.

[0086] In one embodiment, the umbrella skirt includes a fixed part and a heat dissipation part connected together, and a support column is disposed through the fixed part and the heat dissipation part. The cross-sectional area of ​​the heat dissipation part in the direction perpendicular to the extension of the support column is greater than the cross-sectional area of ​​the fixed part in the direction perpendicular to the extension of the support column.

[0087] In this embodiment, the umbrella skirt is configured as a fixing part and a heat dissipation part. The umbrella skirt is connected and installed on the support column via the fixing part, and the cross-sectional area of ​​the heat dissipation part perpendicular to the extension direction of the support column is larger than the cross-sectional area of ​​the fixing part perpendicular to the extension direction of the support column. This increases the heat dissipation convection area of ​​the umbrella skirt through the heat dissipation part. It is understood that the heat dissipation part is connected to the end of the fixing part away from the stator assembly, and the cross-sectional area of ​​the heat dissipation part gradually increases from the fixing part away from the fixing part.

[0088] Optionally, the fixing part and the heat dissipation part are integrally molded. The umbrella skirt has mounting holes that pass through the fixing part and the heat dissipation part, and the support column passes through the mounting holes of the umbrella skirt. Understandably, the support column and the umbrella skirt can be fixedly connected, such as by welding or bonding, which can improve the connection stability between the support column and the umbrella skirt. Of course, the support column and the umbrella skirt can also be detachably connected, such as by snap-fit ​​connection, plug-in fit, screw connection or pin connection, etc., which is not limited here. This facilitates the assembly and disassembly of the support column and the umbrella skirt, and multiple umbrella skirts can be set according to actual needs, which is not limited here.

[0089] In one embodiment, the stator assembly includes a plurality of stator components 12, which are arranged concentrically at intervals. A first gap 1215 is formed between two adjacent stator components 12, so that the heat dissipation space is connected to the receiving groove 111 through the first gap 1215. Each stator component 12 is connected to the stator base 11 through a support column, and each stator component 12 is provided with a conductive surface. The rotor mechanism 2 includes a plurality of rotor components 21, which are arranged concentrically at intervals. A second gap is formed between two adjacent rotor components 21. Each rotor component 21 is provided with a contact surface. Each rotor component 21 is correspondingly arranged with a stator component 12 so that each contact surface abuts against a conductive surface for conduction.

[0090] In this embodiment, as Figures 3 to 11 As shown, by setting the stator assembly as multiple stator components 12, each stator component 12 having a conductive surface, and setting the rotor mechanism 2 as multiple rotor components 21, each rotor component 21 having a contact surface, each rotor component 21 is correspondingly set with a stator component 12. Thus, when the rotor mechanism 2 is rotatably connected to the stator base 11, each contact surface abuts against a conductive surface to conduct electricity, thereby realizing the transmission of current through the multiple rotor components 21 of the rotor mechanism 2 in the current collector device 100 via the multiple stator components 12 of the stator mechanism 1, so as to realize the transmission of large current.

[0091] Understandably, by arranging multiple stator components 12 in concentric circles, a first gap 1215 is formed between two adjacent stator components 12, and by arranging multiple rotor components 21 in concentric circles, a second gap is formed between two adjacent rotor components 21. Thus, when the rotor mechanism 2 is rotatably connected to the stator base 11, the first gap 1215 and the second gap are connected accordingly. This arrangement simplifies the structure of the stator assembly and the rotor mechanism 2, and allows the heat dissipation space to be connected through the first gap 1215 and the second gap. In this way, the heat generated by the rotor mechanism 2 can be effectively transferred to the heat dissipation space for heat dissipation through the first gap 1215 and the second gap, thereby further improving the heat dissipation effect and heat dissipation capacity.

[0092] It should be noted that, compared to the existing technology of setting a separate cooling device in the wind turbine generator, the current collector 100 of this application sets a heat dissipation space inside the stator mechanism 1. When the rotor mechanism 2 rotates or turns relative to the stator mechanism 1, the contact surface and the conductive surface come into contact to generate heat, thereby using the heat dissipation space to dissipate the generated heat. At the same time, by setting a support column to install the stator assembly in the receiving groove 111 of the stator base 11, the heat generated by the stator assembly can be directly introduced into the heat dissipation space for heat dissipation using the support column. Furthermore, by setting a skirt on the support column, the heat dissipation area of ​​the support column is increased, effectively and quickly achieving heat dissipation and improving the heat dissipation effect. This improves the heat dissipation effect and stability of the current collector 100, simplifies the structure of the current collector 100, improves the safety performance of the high current collector ring, and facilitates later maintenance and upkeep.

[0093] In related technologies, such as the conductive slip ring structure disclosed in CN114725746A, a conductive slip ring capable of pre-adjusting the speed of equipment is described. This structure involves installing a conductive rod on the rotor end face, on which a conductive adjustment ring composed of arc segments with different resistance values ​​and insulating arc segments is fixed. By rotating the conductive rod, the arc segments with different resistance values ​​come into contact with the conductive ring, changing the current flow and thus achieving pre-adjustment of the equipment speed. However, this type of conductive slip ring wears out significantly over time, making it unsuitable for the extreme operating conditions of wind power.

[0094] In one embodiment, each stator component 12 includes a stator 121 and a spring contact finger 122. The stator 121 is arranged in a ring shape and is disposed in a cavity. A sliding groove 1211 is provided on the side of the stator 121 facing the receiving groove 111. The spring contact finger 122 is disposed in the sliding groove 1211, and a conductive surface is formed on the side of the spring contact finger 122 facing away from the bottom wall of the sliding groove 1211. Each rotor component 21 is provided with a protrusion 2111. A contact surface is formed on the side of the protrusion 2111 facing away from the rotor component 21. Part of the protrusion 2111 extends into the sliding groove 1211 so that the protrusion 2111 abuts against the spring contact finger 122.

[0095] In this embodiment, as Figures 6 to 11 As shown, the stator 121 of the stator component 12 can be an annular structure, allowing multiple stator components 12 to have their stator 121 arranged as concentric circles with different diameters. To facilitate the installation of the spring contact finger 122 and to allow for dynamic contact with the rotor component 21, a sliding groove 1211 is provided on the top surface of the stator 121. Optionally, the sliding groove 1211 extends along the circumference of the stator 121, meaning it is an annular groove structure.

[0096] Understandably, the spring contact finger 122 is disposed within the sliding groove 1211. By forming a conductive surface on the side of the spring contact finger 122 facing away from the bottom wall of the sliding groove 1211, it is convenient that when the protrusion 2111 of the rotor component 21 extends into the sliding groove 1211, the contact surface of the protrusion 2111 and the conductive surface of the spring contact finger 122 always remain in contact. Optionally, the width of the sliding groove 1211 in the radial direction is greater than the width of the protrusion 2111 in the radial direction.

[0097] In this embodiment, as Figure 11 As shown, when the protrusion 2111 abuts against the spring contact finger 122, the rotor component 21 is compressed under the action of the clamping force, thereby increasing the contact area between the rotor component 21 and the stator component 12. Current flows through the spring contact finger 122. This method helps to transmit large current and increases the reliability of the equipment.

[0098] In one embodiment, such as Figures 8 to 11 As shown, the bottom wall of the sliding groove 1211 is recessed to form a groove 1212, and the spring contact finger 122 is accommodated and confined within the groove 1212, with a portion of the spring contact finger 122 protruding from the opening of the groove 1212. It can be understood that by providing the groove 1212 on the bottom wall of the sliding groove 1211, the spring contact finger 122 is confined and installed within the groove 1212, and, during the rotation of the rotor component 21 relative to the stator component 12, the problem of the spring contact finger 122 moving with the rotor component 21 is avoided.

[0099] Of course, in order to further reduce wear between the rotor component 21 and the stator component 12, in one embodiment, each stator component 12 also includes grease, which is contained in the groove 1212. It is understood that the grease can both reduce wear between the rotor component 21 and the stator component 12 and help the current collector 100 transmit large currents.

[0100] It should be noted that the grease in the groove 1212 sinks down along the support column to the stator seat 11 under the action of gravity. If this phenomenon occurs, it may cause short circuits in each phase. The umbrella skirt on the support column can effectively prevent breakdown between phases along the column.

[0101] In one embodiment, the spring contact finger 122 includes a plurality of contact finger portions 1221 and a plurality of connecting portions 1222. The plurality of contact finger portions 1221 and the plurality of connecting portions 1222 are alternately connected and form a ring. Each contact finger portion 1221 has a conductive surface on the side facing away from the bottom wall of the sliding groove 1211. The groove 1212 includes a plurality of first groove segments 1213 and a plurality of second groove segments 1214. The plurality of first groove segments 1213 and the plurality of second groove segments 1214 are alternately arranged and interconnected. Each contact finger portion 1221 is accommodated in a first groove segment 1213, and a portion of the contact finger portion 1221 protrudes from the opening of the first groove segment 1213. Each connecting portion 1222 is accommodated in a second groove segment 1214.

[0102] In this embodiment, as Figures 8 to 11 As shown, by setting the spring contact finger 122 as multiple contact finger portions 1221 and multiple connecting portions 1222, the multiple contact finger portions 1221 and multiple connecting portions 1222 are alternately connected and form a ring, so that the stator component 12 can abut against the rotor component 21 through the multiple contact finger portions 1221, while reducing the wear problem between the stator component 12 and the rotor component 21.

[0103] In one embodiment, the width of the first gap 1215 is 15mm to 60mm. In this embodiment, as... Figure 6 and Figure 7 As shown, the width of the first gap 1215 is the width of the first gap 1215 in the radial direction. By setting the distance between two adjacent stator components 12 between 15mm and 60mm, the overall layout of multiple cables can be optimized, the ability of the conductive slip ring to transmit large currents can be increased, and installation and maintenance can be facilitated to some extent. By controlling the width of the first gap 1215, the creepage distance between two adjacent stator components 12 is effectively increased, which plays a role in preventing current breakdown.

[0104] Optionally, the width of the first gap 1215 is 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, etc., and is not limited here.

[0105] In this embodiment, the width of the second gap can be selected as 15mm to 60mm. The width of the second gap is the width of the second gap along the radial direction. By setting the distance between two adjacent rotor components 21 between 15mm and 60mm, the overall layout of multiple cables can be optimized, the ability of the conductive slip ring to transmit large currents can be increased, and installation and maintenance can be facilitated to some extent. By controlling the width of the second gap, the creepage distance between two adjacent rotor components 21 is effectively increased, which plays a role in preventing current breakdown. Optionally, the width of the second gap is the same as the width of the first gap 1215.

[0106] Understandably, the widths of the multiple first gaps 1215 formed by the multiple stator components 12 can be the same or different. Optionally, the widths of the multiple first gaps 1215 gradually increase radially from the center of the stator assembly. Similarly, the widths of the multiple second gaps formed by the multiple rotor components 21 can be the same or different. Optionally, the widths of the multiple second gaps gradually increase radially from the center of the rotor mechanism 2.

[0107] In this embodiment, as Figure 7 As shown, the projection of the umbrella skirt onto the bottom wall of the receiving groove 111 coincides with the projection of the first gap 1215 onto the bottom wall of the receiving groove 111. It can be understood that the cross-sectional area of ​​the umbrella skirt along the direction perpendicular to the extension of the support column is larger than the area of ​​the stator member 12 at the overlapping portion of the support column. This effectively increases the heat dissipation area and improves the heat dissipation effect through the umbrella skirt.

[0108] To further improve the installation stability of the stator component 12, optionally, multiple support columns are included, with each stator component 12 connected to the stator base 11 via multiple support columns, and the multiple support columns are spaced apart along the circumferential direction of the stator component 12. Optionally, the number of support columns is 2 to 10. In this embodiment, as shown... Figure 3 As shown, the line connecting the support columns of two adjacent stator components 12 does not coincide with the radial direction of the stator assembly. This avoids mutual interference between the umbrella skirts on adjacent support columns, thus preventing structural interference and improving heat dissipation.

[0109] It is understood that the number of stator components 12 can be two, three, four, five, six, or more, and no limitation is made here. Correspondingly, the number of rotor components 21 can be two, three, four, five, six, or more, and no limitation is made here. In this embodiment, there can be six stator components 12 and six rotor components 21. The six stator components 12 are arranged in a concentric circle structure, and the six rotor components 21 are arranged in a concentric circle structure, with each rotor component 21 corresponding to one of the stator components 12.

[0110] In one embodiment, such as Figure 6 and Figure 8 As shown, each stator component 12 also includes a copper busbar 123 and a temperature sensor. One end of the copper busbar 123 is connected to the stator 121, and the other end of the copper busbar 123 penetrates the bottom wall of the cavity. The temperature sensor is located on the side of the stator base 11 facing away from the rotor component 21 and is close to one end of the copper busbar 123 that extends out of the receiving groove 111.

[0111] In this embodiment, by connecting a copper busbar 123 to the stator 121, the current transmitted from the rotor 21 to the stator 12 is conductively transmitted using the copper busbar 123. The copper busbar 123 can be a copper wire bar, a spring, or a conductive connecting plate, etc., and is not limited thereto. It is understood that by setting a temperature sensor, the temperature of the stator 12 is detected and a temperature signal is transmitted to prevent excessive temperature rise of the conductive slip ring.

[0112] Understandably, the temperature sensor can be fixed to the copper busbar 123 or to the stator base 11. The detection probe of the temperature sensor can directly contact the copper busbar 123 or be positioned close to it; this is not limited here. Optionally, each stator component 12 also includes multiple copper busbars 123, which are spaced apart along the circumferential direction of the stator 121. This arrangement helps the current collector 100 to transmit large currents.

[0113] In one embodiment, the stator mechanism 1 further includes a cable holder 124 and a cable 125. The cable holder 124 is connected to the end of the stator base 11 away from the rotor mechanism 2. One end of the cable 125 is connected to the copper busbar 123, and the other end of the cable 125 is fixed to the cable holder 124.

[0114] In this embodiment, as Figure 1 and Figure 6 As shown, by setting up the cable holder 124, it is convenient to use the cable holder 124 to install and fix multiple cables 125, and to connect the cables 125 in sequence, so as to avoid the cables 125 being messy.

[0115] In one embodiment, the stator base 11 is further provided with an air inlet 112 and an air outlet 113 that communicate with the heat dissipation space, and the stator mechanism 1 also includes a fan 126, which is located at the air inlet 112 and / or the air outlet 113.

[0116] In this embodiment, as Figure 1 , Figure 6 and Figure 7 As shown, by providing an air inlet 112 and an air outlet 113 on the stator base 11, it is convenient to introduce cool air into the heat dissipation space through the air inlet 112 and exhaust it through the air outlet 113, thereby providing a heat exchange effect and improving heat dissipation capacity. It is understood that by providing a fan 126, positioned at the air inlet 112 and / or the air outlet 113, the fan 126 can create a directional driving force on the airflow within the heat dissipation channel formed by the air inlet 112, the heat dissipation space, and the air outlet 113, accelerating heat exchange and further improving the heat dissipation effect.

[0117] It is understandable that the fan 126 can be a centrifugal fan. The fan 126 can optionally be located at the air outlet 113. Of course, in other embodiments, the fan 126 can also be located at the air inlet 112. Alternatively, the fan 126 can be located at both the air inlet 112 and the air outlet 113, which is not limited here.

[0118] In one embodiment, such as Figure 1 , Figure 6 and Figure 7 As shown, the stator mechanism 1 also includes a check valve 127, which is located at the air outlet 113. In this way, the airflow in the heat dissipation channel formed by the air inlet 112, the heat dissipation space and the air outlet 113 can be unidirectionally circulated by the check valve 127.

[0119] In one embodiment, the stator mechanism 1 further includes a filter screen disposed at the air inlet 112 and / or air outlet 113. It is understood that this arrangement not only enables heat exchange and dissipation of the current collector 100, but also serves to clean dust, facilitating the transmission of large currents.

[0120] Optionally, the filter screen is located at the air inlet 112. Of course, in other embodiments, the filter screen may also be located at the air inlet 112. Alternatively, filters may be provided at both the air inlet 112 and the air outlet 113; this is not limited here. In this embodiment, the specific structure of the filter screen can refer to the prior art, and will not be described in detail here.

[0121] In one embodiment, the stator mechanism 1 further includes louvers located at the air inlet 112 and / or air outlet 113. It is understood that this arrangement not only enables heat exchange and dissipation of the current collector 100 but also serves to clean dust, facilitating the transmission of large currents.

[0122] Understandably, the louvers can be optionally located at the air inlet 112. Of course, in other embodiments, the louvers can also be located at the air inlet 112. Alternatively, louvers can be located at both the air inlet 112 and the air outlet 113; this is not limited here. In this embodiment, the specific structure of the louvers can refer to existing technology and will not be described in detail here.

[0123] In one embodiment, the rotor mechanism 2 further includes a rotor seat 22 and a steel ring 23. The rotor seat 22 is rotatably connected to the stator seat 11 and movably covers the opening of the receiving groove 111. A plurality of rotor components 21 are connected to the rotor seat 22 and are housed in the receiving groove 111. The steel ring 23 is disposed on the periphery of the rotor seat 22 and slides against the outer wall of the stator seat 11. In the locked state, the rolling element 425 rolls against the steel ring 23.

[0124] In this embodiment, as Figure 1 and Figure 3As shown, by setting the rotor seat 22, multiple rotor components 21 can be conveniently installed and fixed using the rotor seat 22, that is, multiple rotor components 21 are integrated into one, realizing an integrated modular structure, which facilitates processing and assembly. It can be understood that by setting the steel ring 23 on the periphery of the rotor seat 22, the steel ring 23 and the rotor seat 22 cooperate to form a mounting groove structure, that is, multiple rotor components 21 are located in the mounting groove and connected to the rotor seat 22, and the steel ring 23 can achieve limited sliding assembly with the stator seat 11.

[0125] In one embodiment, each rotor component 21 includes a rotor 211, a fork assembly 212, and a connecting bar 213. The rotor 211 is provided with a contact surface. One end of the fork assembly 212 is connected to the side of the rotor 211 facing away from the contact surface, and the other end of the fork assembly 212 is connected to the rotor seat 22. One end of the connecting bar 213 is flexibly connected to the rotor 211 via a copper busbar 123, and the other end of the connecting bar 213 is used to connect a cable.

[0126] In this embodiment, as Figure 3 and Figure 4 As shown, the rotor 211 of the rotor component 21 can be selected as a ring structure, so that the rotors 211 of multiple rotor components 21 are set as concentric circles with different diameters. The rotor 211 of the rotor component 21 can be connected to the rotor seat 22 through the fork assembly 212, thereby improving the connection stability between the rotor component 21 and the rotor seat 22.

[0127] To further improve the connection stability between rotor 211 and rotor base 22, such as Figure 4 As shown, the shift fork assembly 212 includes multiple components, which are spaced apart circumferentially along the rotor 211. In this embodiment, as... Figure 11 As shown, a protrusion 2111 is provided on the side of the rotor 211 facing away from the fork assembly 212. The side of the protrusion 2111 facing away from the rotor 21 forms a contact surface, which allows the protrusion 2111 to easily extend into the sliding groove 1211 and dynamically abut against the spring contact finger 122.

[0128] Understandably, the width of the second gap formed between two adjacent rotors 211 can be selected from 15mm to 60mm. Optionally, the width of the second gap can be 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, etc., and is not limited here. This increases the distance between the cables, facilitating installation, and also prevents pole breakdown.

[0129] In this embodiment, the connection between the connecting bus 213 and the rotor 211 is a flexible copper busbar connection. This connection method is beneficial for current transmission and provides space for the rotor 211 to move in a certain axial direction, thereby increasing the spatial adaptability of the mechanism. Optionally, each rotor 211 is connected to multiple connecting buses 213, and the multiple connecting buses 213 are arranged at intervals along the circumference of the rotor 211.

[0130] Optionally, the multiple connecting rows 213 of the multiple rotors 211 are arranged in a spiral shape in the radial direction, that is, the multiple connecting rows 213 of the multiple rotors 211 are not overlapped in the radial direction. From the outermost rotor 211 to the innermost rotor 211, the multiple connecting rows 213 are arranged in a spiral shape in the circumferential direction. This not only makes it convenient for the multiple rotors 211 arranged in a concentric circle structure to increase the distance between the cables, but also facilitates installation and prevents the two poles from breaking down.

[0131] In one embodiment, such as Figure 4 As shown, the shift fork assembly 212 includes a shift fork seat 2121, a shift fork rod 2122, a shift fork sleeve 2123, and a compression spring 2124. The shift fork seat 2121 is connected to the side of the rotor 211 facing away from the contact surface. The shift fork rod 2122 is sleeved on the shift fork seat 2121. A compression spring 2124 is installed between the shift fork seat 2121 and the shift fork rod 2122. The shift fork sleeve 2123 is sleeved on the shift fork rod 2122. The end of the shift fork rod 2122 away from the shift fork seat 2121 is connected to the rotor seat 22.

[0132] In this embodiment, the number of shift fork assemblies 212 on each rotor 211 can be specifically set according to the diameter of the rotor 211. The number of shift fork assemblies 212 on multiple rotors 211 can be the same or different, and is not limited here. It can be understood that by setting the shift fork assembly 212 as a structure of shift fork seat 2121, shift fork rod 2122, shift fork sleeve 2123 and compression spring 2124, a stable connection between the rotor 211 and the rotor seat 22 can be achieved, and the torque between the rotor seat 22 and the rotor 211 can be transmitted to drive them to rotate. At the same time, the compression spring 2124 provides clamping force to ensure a tight fit between the rotor 211 and the stator component 12.

[0133] In one embodiment, such as Figure 6As shown, the outer wall of the stator base 11 is provided with a wear-resistant ring 114, and the steel ring 23 slides against the wear-resistant ring 114. It is understandable that the wear-resistant ring 114 helps reduce wear between the rotor mechanism 2 and the stator base 11 when the rotor mechanism 2 rotates relative to the stator base 11. Optionally, the rotor base 22 is disc-shaped, the steel ring 23 is annular, and the stator base 11 has a cylindrical outline. This facilitates the insertion of one end of the stator base 11 near the opening of the receiving groove 111 into the mounting groove structure formed by the steel ring 23 and the rotor base 22, allowing the steel ring 23 to slide against the outer wall of the stator base 11. Optionally, the wear-resistant ring 114 is disposed on the outer wall of the stator base 11 near the opening of the receiving groove 111. The wear-resistant ring 114 is made of rubber or a material with wear-resistant properties, and is not limited here. The wear-resistant ring 114 can be annular.

[0134] In one embodiment, such as Figure 6 and Figure 7 As shown, a wear-resistant block 115 is also provided near the opening of the receiving groove 111 in the stator base 11, and the rotor base 22 slides against the wear-resistant block 115. It can be understood that the wear-resistant block 115 helps reduce wear between the rotor mechanism 2 and the stator base 11 when the rotor mechanism 2 rotates relative to the stator base 11. Optionally, the wear-resistant block 115 is disposed on the top end face of the stator base 11, thereby reducing wear between the rotor base 22 and the top end face of the stator base 11.

[0135] Optionally, the wear-resistant block 115 may be made of rubber or a material with wear-resistant properties, and there is no limitation herein. Optionally, there may be multiple wear-resistant blocks 115, which are arranged at intervals along the circumferential direction of the stator seat 11.

[0136] In one embodiment, such as Figure 1 , Figure 3 , Figure 4 As shown, the rotor base 22 has a through hole 221 corresponding to the connecting bar 213. The connecting bar 213 includes a wire bar 2131, a busbar 2132, and a fixing block 2133. One end of the wire bar 2131 is connected to the side of the rotor base 22 facing the rotor 211 through the fixing block 2133. The busbar 2132 is sleeved on the outside of the wire bar 2131, and the other end of the wire bar 2131 passes through the through hole 221 and is connected to the cable. It is understood that the busbar 2132 is sleeved on the connecting bar 213. The busbar 2132 can be made of insulating material. This insulating material sleeve can prevent current breakdown and increase the insulation strength of the structure. The number of connecting bars 213 on multiple rotors 211 can be the same or different, and is not limited here.

[0137] In related technologies, such as the conductive slip ring disclosed in CN111682383A, a slip ring structure specifically designed to improve wear between the brush bristles and the slip groove is provided. This structure improves the service life of the conductive slip ring by adjusting the contact surface between each brush and the corresponding conductive slip groove through an adjustment mechanism. However, this structure is not stable enough and has a small creepage distance, making it prone to breakdown at the poles in high-current environments such as wind power.

[0138] In one embodiment, the rotor mechanism 2 further includes a partition component 24, which includes a mounting block 241 and a plurality of spacers 244. The mounting block 241 is connected to the rotor seat 22, and the plurality of spacers 244 are arranged in concentric circles and are respectively connected to the mounting block 241. Each spacer 244 is located in a second gap.

[0139] In this embodiment, as Figure 3 and Figure 5 As shown, by setting up the separator assembly 24, the spacers 244 of the separator assembly 24 separate the corresponding two rotors 211 and the two adjacent stator components 12, thereby increasing the creepage distance between each phase and preventing current breakdown. It can be understood that the separator assembly 24 is fixedly connected to the rotor seat 22 via the mounting block 241, improving the installation stability of the separator assembly 24. Simultaneously, it facilitates the fixing of multiple spacers 244 using the mounting block 241, ensuring that the multiple spacers 244 are arranged concentrically.

[0140] Understandably, each spacer plate 244 is located within a second gap. When the rotor mechanism 2 is rotatably connected to the stator base 11, each spacer plate 244 is sequentially inserted into the second gap and the first gap 1215. That is, each spacer plate 244 is located between two adjacent rotor components 21 and two adjacent stator components 12.

[0141] In this embodiment, as Figure 5 The mounting blocks 241 include a plurality of blocks, which are spaced apart along the circumferential direction of the spacers 244. It is understood that each mounting block 241 includes a mounting portion 242 and a protrusion 243 extending from the mounting portion 242. The protrusion 243 is connected to the rotor seat 22, and the mounting portion 242 extends radially and is connected to the plurality of spacers 244 respectively.

[0142] To facilitate the connection and fixation of the partition plate 244 and the mounting block 241, such as Figure 5As shown, each partition plate 244 includes a cylindrical portion 245 and a plurality of lugs 246. The cylindrical portion 245 is open at both ends, and the plurality of lugs 246 are spaced out and protrude from one end of the cylindrical portion 245. Each lug 246 is provided with a mounting groove 247, and a portion of the mounting block 241 is confined within the mounting groove 247. Optionally, the plurality of lugs 246 of the plurality of partition plates 244 are arranged correspondingly in the radial direction.

[0143] In one embodiment, such as Figure 1 and Figure 3 As shown, the rotor mechanism 2 also includes an oil drain 25 and an oil injector 26. The oil drain 25 is connected to the rotor base 22 and is positioned corresponding to the rotor component 21. The oil injector 26 is connected to the end of the oil drain 25 away from the rotor base 22 and is used to supply grease to the rotor component 21. It is understood that by providing the oil drain 25 and the oil injector 26, the oil injector 26 can accurately and stably supply lubricating oil through a pipeline, thereby ensuring the stability of the current collector 100.

[0144] In one embodiment, the current collector 100 further includes a low-voltage slip ring 3, the rotor mechanism 2 is provided with a first through hole 222, and the stator mechanism 1 is provided with a second through hole 116 corresponding to the first through hole 222. The second through hole 116 penetrates the bottom wall of the receiving groove 111, and the low-voltage slip ring 3 is sequentially inserted through the first through hole 222 and the second through hole 116.

[0145] In this embodiment, as Figure 1 , Figure 3 , Figure 6 and Figure 7 As shown, the low-voltage slip ring 3 is arranged at the center of the entire power collection device 100. When the power collection device 100 is installed on the wind turbine generator set, the low-voltage slip ring 3 is used for the power transmission and control signal exchange between the top of the wind tower and the base components.

[0146] The current collector 100 of this invention can be applied to situations where the rotor rotation speed is slow, such as wind turbine yaw, and high current needs to be withstood. It has a stable and simple structure. The current collector 100, through the combination of rotor mechanism 2, stator mechanism 1, low-voltage slip ring 3, and cable holder 124, can complete the dynamic current transmission between the rotating part driven by wind turbine yaw and the stationary conductor fixed inside the wind turbine tower under high current conditions, such as wind power generation. Furthermore, by setting the stator assembly and rotor component 21 as a concentric circle structure and adding partition structures such as the separator component 24, the safety performance of this high-current conductive slip ring is improved. At the same time, the stability and service life of the conductive slip ring are improved by structures such as the ball bearing of the locking component 4 and the compression spring 2124 of the shift fork assembly 212.

[0147] Understandably, the fixing member 41 of the locking assembly 4 is fixedly connected to the stator mechanism 1. The fixing member 41 and the locking member 42 are connected by a lock nut and a bolt with holes. The locking member 42 has grooves that allow it to move up and down. By manually pressing the handle to the vertical position, the locking member 42 is moved down to the structural dead point, thus locking the rotor mechanism 2 and the stator mechanism 1. By lifting the handle, the locking member 42 is moved up, releasing the rotor mechanism 2 from the stator mechanism 1. This method allows for rapid clamping between the stator and rotor, preventing abnormal vibration.

[0148] The locking assembly 4 contacts the rotor mechanism 2 via a cam bearing. When the rotor mechanism 2 rotates, the cam bearing significantly reduces friction and wear, improving structural stability. A fastening adhesive is applied between the inner ring of the cam bearing and the shaft to prevent detachment and avoid unnecessary disassembly. The nut is a lock-lock nut, which mates with a bolt with a hole. A lead seal is installed on the bolt to lock the lock-lock nut and prevent loosening. Thread-locking adhesive is applied between the nut and the bolt to further enhance structural stability and prevent unnecessary disassembly.

[0149] The present invention also proposes a wind turbine generator set, which includes a tower, a nacelle and a power collection device 100. The specific structure of the power collection device 100 is as described in the foregoing embodiments. Since the present wind turbine generator set adopts all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought about by the technical solutions of the foregoing embodiments, which will not be described in detail here.

[0150] In this embodiment, the nacelle and the tower are rotatably connected. The nacelle is equipped with a generator, and the rotor mechanism 2 of the current collector 100 is located in the nacelle and connected to the generator. The stator mechanism 1 of the current collector 100 is connected to the tower. It is understood that the end of the tower furthest from the nacelle is fixed to the ground, and the nacelle is equipped with multiple fan blades, causing the fan blades to rotate under wind force at high altitudes, thereby driving the rotor mechanism 2 of the current collector 100 to rotate relative to the stator mechanism 1.

[0151] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A current collecting device applied to a wind turbine generator system, characterized in that, The current collecting device comprises: A stator mechanism comprising a stator base and a plurality of stator pieces, the stator base having a cavity with an open end, the plurality of stator pieces being arranged in concentric circles in the cavity and separating the cavity into a receiving groove and a heat dissipation space, a first gap being formed between two adjacent stator pieces to allow the heat dissipation space and the receiving groove to communicate, each stator piece being provided with an electrically conductive surface on a side facing the receiving groove, the plurality of stator pieces being arranged in the receiving groove through a support column, the support column being provided with a skirt, the skirt comprising a fixed portion and a heat dissipation portion connected together, the support column being arranged through the fixed portion and the heat dissipation portion, the heat dissipation portion having a cross-sectional area perpendicular to the extension direction of the support column larger than that of the fixed portion; A locking assembly connected to the outer wall of the stator mechanism, one end of the locking assembly being provided with a rolling piece, the locking assembly being connected to the outer wall of the stator base and arranged adjacent to the opening; and A rotor mechanism detachably rotatably connected with the stator mechanism, the rotor mechanism being provided with an electrically conductive surface, the rotor mechanism being detachably covered on the groove opening of the receiving groove and rotatably connected with the stator mechanism to allow the electrically conductive surface to abut and conduct with the electrically conductive surface; Wherein, the current collecting device has a locking state in which the locking assembly locks the rotor mechanism and a release state in which the locking assembly releases the rotor mechanism; In the locking state, the rolling piece rolls and abuts against the rotor mechanism; In the release state, the rolling piece is away from the rotor mechanism.

2. The current collecting device of claim 1, wherein The locking assembly comprises: A fixed piece connected to the outer wall of the stator mechanism; A locking piece movably connected to the fixed piece, one end of the locking piece being provided with the rolling piece; and An adjusting piece rotatably connected with the locking piece and the fixed piece; Wherein, the adjusting piece drives the locking piece to lock or release the rotor mechanism, so that the rolling piece rolls and abuts against or is away from the rotor mechanism.

3. The current collecting device of claim 2, wherein One end of the locking piece away from the adjusting piece is provided with a mounting hole, the rolling piece is a cam bearing, the bolt end of the cam bearing is arranged in the mounting hole, in the locking state, the bearing end of the cam bearing rolls and abuts against the rotor mechanism; Wherein, when the rotor mechanism rotates relative to the stator mechanism, the bearing end rolls with the rotor mechanism.

4. The current collecting device according to claim 2, wherein The locking piece is provided with a movable groove, a rotating shaft is arranged in the movable groove, the fixed piece is provided with a rotating connection lug corresponding to the movable groove, one end of the adjusting piece is rotatably connected with the rotating connection lug through a rotating shaft and rotatably arranged on the rotating shaft, the other end of the adjusting piece is provided with a handle; Wherein, the adjusting piece drives the locking piece to move relative to the fixed piece, so that the rotating connection lug moves along the movable groove.

5. The current collecting device of claim 2, wherein The locking piece is provided with a locking hole, the fixed piece is provided with a moving hole, the locking assembly further comprises a locking piece, the locking piece is arranged in the moving hole and the locking hole in sequence; The adjusting member drives the locking member to move relative to the fixed member, so that the anti-loosening member moves along the moving hole.

6. The current collecting device according to any one of claims 1 to 5, characterized by The locking assembly includes a plurality of locking assemblies, and the plurality of locking assemblies are arranged in a circumferential direction of an outer wall of the stator mechanism.

7. A wind power unit, characterized in that The wind turbine generator includes: a tower; a machine cabin, which is rotationally connected to the tower, and which is provided with a generator; and The current collecting device according to any one of claims 1 to 6, wherein a rotor mechanism of the current collecting device is arranged in the machine cabin and connected to the generator, and a stator mechanism of the current collecting device is connected to the tower.

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