Busbar structure for a wind turbine generator system

Abstract

The utility model relates to power transmission component technical field, and disclose a bus structure for wind turbine, including tower cylinder wall, the front end fixed mounting of tower cylinder wall has several support trays, the top of support tray is provided with connecting assembly, the upper and lower end of through support tray is provided with several bus bodies, connecting assembly has several insulating protective sheaths and buffer sleeve, the insulating protective sheath is covered at the connecting place of each bus body, buffer sleeve fixed mounting is at the insulating outer skin of bus body, through connecting assembly, through the mode of starting heat dissipation fan, the insulating protective sheath of bus body connecting place setting is wind -cooled heat dissipation, so as to reduce its place temperature rise efficiency, the cooling liquid is conveniently transported to the cooling pipe, thereby can carry out liquid cooling heat dissipation to bus body, can further improve bus body heat dissipation effect, avoid the joint place temperature rise higher, lead to insulating crack, conveniently reduce maintenance replacement frequency.

Description

Technical Field

[0001] This utility model relates to the field of power transmission components technology, specifically a busbar structure for wind turbine generator sets. Background Technology

[0002] Wind power generation is a clean energy technology that converts the kinetic energy of wind into electrical energy. The bus structure in a wind turbine generator is a conductive system used for centralized transmission and distribution of electrical energy, which is equivalent to the "power trunk line" in the wind power system. It efficiently and safely transmits the electrical energy generated by the wind turbine to transformers, inverters or grid connection points.

[0003] A search revealed a Chinese patent for a busbar structure for a wind turbine generator set, publication number CN215804977U. The structure includes an insulating support sleeve fitted onto the upper end of the busbar; and two insulating protective sleeves fitted onto the two ends of the insulating support sleeve. One end of each insulating protective sleeve is fitted onto the busbar, and the other end is fitted onto the end of the insulating support sleeve.

[0004] The above-mentioned device, through the combination of elastic support component and insulation component two, can release conductor stress in a timely manner, and prevent the conductor from bending due to external force and thermal expansion and contraction, which could lead to failure or damage to the connection structure. On the other hand, it can also effectively mitigate the impact of stress changes on the busbar structure at the connection with the elastic support component, ensuring insulation and improving the effective service life of the product. However, its structure is relatively simple, with only a few supporting components restricting the movement of the busbar. The operating temperature of the busbar needs to be ≤105℃, and it lacks auxiliary heat dissipation measures. The temperature rise at the joints is high, which may cause the insulation material to crack prematurely, resulting in a high frequency of subsequent maintenance and replacement. Summary of the Invention

[0005] The purpose of this utility model is to provide a busbar structure for wind turbine generator sets, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A busbar structure for a wind turbine generator set includes a tower wall. Several support trays are fixedly installed at the front end of the tower wall. A connecting component is provided at the top of the support tray. Several busbar bodies are provided through the upper and lower ends of the support tray. The connecting component has several insulating protective sleeves and buffer sleeves. The insulating protective sleeves are fitted at the connection points of each busbar body. The buffer sleeve is fixedly installed on the insulation sheath of the busbar body. A buffer spring is provided at the end of the buffer sleeve near the support tray. The end of the buffer spring away from the buffer sleeve abuts against the upper and lower ends of the support tray. The buffer sleeve is hollow cylindrical. A cooling pipe is provided inside the buffer sleeve. Both ends of the cooling pipe are connected to valve joints, and the valve joints extend into the interior of the buffer sleeve. Cooling liquid is supplied into the cooling pipe to perform liquid cooling heat dissipation on the busbar body.

[0007] Preferably, the cooling pipe is spirally arranged, with the inner ring of the cooling pipe fitting against the outer ring of the busbar body. The spiral arrangement of the cooling pipe is used to improve the contact heat conduction effect.

[0008] Preferably, the insulating protective sleeve is located on the inner ring of the buffer spring, and an adjustment gap is left between the buffer spring and the insulating protective sleeve.

[0009] Preferably, several ventilation openings are provided at the front and rear ends of the tower wall near the support tray, and cooling fans are installed inside the ventilation openings.

[0010] Preferably, the busbar bodies are staggered, and a solenoid valve is provided at one end of the valve connector that extends out of the buffer sleeve, and a connector is provided at the end of the valve connector that is away from the cooling pipe.

[0011] Preferably, the cooling pipe and the buffer sleeve are both made of insulating material, the cooling pipe is sleeved on the outer ring of the busbar body, and the cooling pipe is movably connected to the busbar body.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This utility model, by setting up a connecting component to cooperate with the busbar body, when multiple busbar bodies are connected, the connection can be protected by the set insulating protective sleeve, buffer spring and buffer sleeve, which can reduce the vibration at the connection. In addition, by starting the cooling fan, the insulating protective sleeve set at the connection of the busbar body can be cooled by air, so as to reduce the temperature rise efficiency.

[0013] By setting up buffer sleeves, cooling pipes, and valve joints in coordination, and connecting the liquid inlet of the valve joint to the external coolant pipe, coolant can be easily delivered to the cooling pipe, thereby liquid cooling of the busbar body. This can further improve the heat dissipation effect of the busbar body, avoid high temperature rise at the joint, which could lead to insulation cracking, and reduce the frequency of maintenance and replacement. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a busbar structure for a wind turbine generator set according to an embodiment of this utility model; Figure 2This is a schematic diagram of the structure of the buffer sleeve, buffer spring, and valve connector in the embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the cooling pipe, cooling fan, and insulating protective sleeve in the embodiment of this utility model.

[0015] In the diagram: 1. Tower wall; 2. Support tray; 3. Connecting assembly; 4. Busbar body; 5. Insulating protective sleeve; 6. Buffer sleeve; 7. Buffer spring; 8. Cooling pipe; 9. Valve joint; 10. Cooling fan. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0017] Combination Figures 1-3 A busbar structure for a wind turbine generator set includes a tower wall 1. Several support trays 2 are fixedly installed at the front end of the tower wall 1. A connecting component 3 is provided at the top of the support tray 2. Several busbar bodies 4 are provided through the upper and lower ends of the support tray 2. The connecting component 3 has several insulating protective sleeves 5 and buffer sleeves 6. The insulating protective sleeves 5 are fitted at the connection of each busbar body 4.

[0018] See Figure 2 and Figure 3 Furthermore, the buffer sleeve 6 is fixedly installed on the insulating outer sheath of the busbar body 4. A buffer spring 7 is provided at the end of the buffer sleeve 6 near the support tray 2. The end of the buffer spring 7 away from the buffer sleeve 6 abuts against the upper and lower ends of the support tray 2. The buffer sleeve 6 is a hollow cylindrical shape. The insulating protective sleeve 5 is located in the inner ring of the buffer spring 7, and there is an adjustment gap between the buffer spring 7 and the insulating protective sleeve 5. Several ventilation openings are provided at the front and rear ends of the tower wall 1 near the support tray 2. A cooling fan 10 is installed inside the ventilation opening.

[0019] Specifically, when several busbar bodies 4 are connected, an insulating protective sleeve 5 is placed on the connection point to provide protection. When the busbar body 4 is subjected to vibration, the buffer sleeve 6 and the tower wall 1 are fixedly connected, and a buffer spring 7 is provided between the buffer sleeve 6 and the support tray 2. The timely and effective deformation of the buffer spring 7 absorbs the vibration impact, effectively reducing the probability of loosening and breaking at the connection point, and improving the performance. During use, the cooling fan 10 is activated to improve the ventilation efficiency and provide air cooling for the insulating protective sleeve 5. Example

[0020] See Figure 3 Furthermore, based on Embodiment 1, the buffer sleeve 6 is further provided with a cooling pipe 8 inside, and both ends of the cooling pipe 8 are connected to valve joints 9, with the valve joints 9 extending out of the buffer sleeve 6. Cooling liquid is supplied into the cooling pipe 8 for liquid cooling of the busbar body 4. The cooling pipe 8 is spirally arranged, with the inner ring of the cooling pipe 8 fitting against the outer ring of the busbar body 4. The spiral arrangement of the cooling pipe 8 is used to improve the contact heat conduction effect. Several busbar bodies 4 are staggered. A solenoid valve is provided at one end of the valve joint 9 extending out of the buffer sleeve 6, and a joint is provided at the end of the valve joint 9 away from the cooling pipe 8. Both the cooling pipe 8 and the buffer sleeve 6 are made of insulating material. The cooling pipe 8 is fitted around the outer ring of the busbar body 4, and the cooling pipe 8 and the busbar body 4 are movably connected.

[0021] Specifically, before use, since the cooling pipe 8 surrounds the busbar body 4 and is located inside the buffer sleeve 6, and both ends of the cooling pipe 8 are connected to valve joints 9, the valve joint 9 of the liquid inlet can be connected to the external coolant pipe in advance, and the liquid outlet can be connected to the external circulation pipe. When the busbar body 4 generates heat by transmitting electrical energy, the coolant can be delivered to the cooling pipe 8 to perform liquid cooling heat exchange, so as to prevent the temperature rise at the joints of multiple busbar bodies 4 from being too high, prevent the insulation material from cracking prematurely, reduce the frequency of subsequent maintenance and replacement, and the liquid discharged through the circulation pipe can be cooled and regenerated by personnel according to existing technology for recycling.

[0022] In actual operation, when several busbar bodies 4 are connected, the insulating protective sleeve 5 is placed on the connection to provide protection. When the busbar body 4 is subjected to vibration, the buffer sleeve 6 and the tower wall 1 are fixedly connected, and a buffer spring 7 is provided between the buffer sleeve 6 and the support tray 2. The timely and effective deformation of the buffer spring 7 can absorb the vibration impact, effectively reduce the probability of loosening and disconnection at the connection, and improve the performance. In addition, during use, the ventilation efficiency can be improved by starting the cooling fan 10, which can provide air cooling for the insulating protective sleeve 5. Before use, since the cooling pipe 8 surrounds the busbar body 4 and is located inside the buffer sleeve 6, and valve joints 9 are connected to both ends of the cooling pipe 8, the valve joint 9 of the liquid inlet can be connected to the external coolant pipe in advance, and the liquid outlet can be connected to the external circulation pipe. When the busbar body 4 generates heat by transmitting electrical energy, the coolant can be delivered to the cooling pipe 8 to perform liquid cooling heat exchange, so as to prevent the temperature rise at the joints of multiple busbar bodies 4 from being too high, prevent the insulation material from cracking prematurely, reduce the frequency of subsequent maintenance and replacement, and the liquid discharged through the circulation pipe can be cooled and regenerated by personnel according to existing technology for recycling. Furthermore, the display and control components and modules used in the aforementioned cooling fan 10 and valve connector 9 are all existing technologies, which can be fully implemented by those skilled in the art. The power supply is also common knowledge in the field and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A busbar structure for a wind turbine generator set, comprising a tower wall (1), wherein a plurality of support trays (2) are fixedly installed at the front end of the tower wall (1), characterized in that: The top of the support tray (2) is provided with a connecting component (3), and several busbar bodies (4) are provided through the upper and lower ends of the support tray (2). The connecting component (3) has several insulating protective sleeves (5) and buffer sleeves (6). The insulating protective sleeves (5) are fitted at the connection of each busbar body (4). The buffer sleeve (6) is fixedly installed on the insulating outer sheath of the bus body (4). A buffer spring (7) is provided at one end of the buffer sleeve (6) near the support tray (2). The end of the buffer spring (7) away from the buffer sleeve (6) abuts against the upper and lower ends of the support tray (2). The buffer sleeve (6) is a hollow cylindrical shape. A cooling pipe (8) is provided inside the buffer sleeve (6). Both ends of the cooling pipe (8) are connected to valve joints (9), and the valve joints (9) extend out of the interior of the buffer sleeve (6). Cooling liquid is supplied to the cooling pipe (8) for liquid cooling of the bus body (4).

2. The busbar structure for a wind turbine generator set according to claim 1, characterized in that: The cooling pipe (8) is spirally arranged, with the inner ring of the cooling pipe (8) fitting against the outer ring of the busbar body (4). The spiral arrangement of the cooling pipe (8) is used to improve the contact heat conduction effect.

3. The busbar structure for a wind turbine generator set according to claim 1, characterized in that: The insulating protective sleeve (5) is located inside the buffer spring (7), and there is an adjustment gap between the buffer spring (7) and the insulating protective sleeve (5).

4. The busbar structure for a wind turbine generator set according to claim 1, characterized in that: Several ventilation openings are provided at the front and rear ends of the tower wall (1) near the support tray (2), and cooling fans (10) are installed inside the ventilation openings.

5. The busbar structure for a wind turbine generator set according to claim 1, characterized in that: Several busbar bodies (4) are staggered. The valve connector (9) is provided with a solenoid valve at one end extending out of the buffer sleeve (6), and a connector is provided at the other end of the valve connector (9) away from the cooling pipe (8).

6. The busbar structure for a wind turbine generator set according to claim 2, characterized in that: The cooling pipe (8) and the buffer sleeve (6) are both made of insulating material. The cooling pipe (8) is fitted around the outer ring of the bus body (4), and the cooling pipe (8) and the bus body (4) are movably connected.

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