Wind power generation equipment

Abstract

The utility model provides wind power generation equipment, and relates to the technical field of wind power generation, the wind power generation equipment comprises a tower, a host, a transformer and a magnetic shielding piece, the tower is provided with a containing cavity; the host is arranged at the top of the tower and comprises a cabin and a fan, and the fan comprises a generator and a control unit which are in signal connection with each other; the transformer is arranged at the end, away from the ground, of the containing cavity or in the cabin, and when the transformer is arranged in the cabin, the transformer is arranged on the side close to the generator and away from the control unit and electrically connected with the generator; the magnetic shielding piece is arranged between the transformer and the generator, the projection area of the magnetic shielding piece covers the projection area of the transformer in the direction from the generator to the transformer, and by limiting the arrangement position of the transformer and arranging the magnetic shielding piece, the electric energy transmission distance between the draught fan and the transformer is shortened, and the electric energy transmission efficiency is improved. And the influence of an electromagnetic field generated by the transformer on other devices in the fan is reduced while the electric energy loss between the fan and the transformer is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind power generation technology, and in particular to a wind power generation device. BACKGROUND

[0002] Wind energy is a clean and renewable energy. Converting wind energy into electric energy can reduce the dependence on traditional fossil energy and help achieve diversified energy development.

[0003] In the related art, wind energy is converted into mechanical energy by a wind power generation device, and then converted into electric energy. The electric energy is transmitted to users over a long distance. In the transmission process, the output electric energy of the wind turbine has low pressure. Therefore, a transformer is arranged before the electric energy is transmitted to the users to increase the transmission pressure of the wind turbine and reduce the electric energy loss in the transmission process. The transformer is generally arranged on the ground beside the wind power generation device.

[0004] Therefore, in the related art, there are technical problems of long electric energy transmission distance between the wind turbine and the transformer in the wind power generation device, high electric energy loss, and influence of the transformer on the devices in the wind turbine when the electric energy transmission distance between the wind turbine and the transformer is shortened. UTILITY MODEL CONTENT

[0005] The present application provides a wind power generation device, which aims to solve the technical problems of high electric energy loss between the wind turbine and the transformer in the wind power generation device and influence of the transformer on the devices in the wind turbine, thereby reducing the electric energy loss during electric power transmission between the wind turbine and the transformer in the wind power generation device and reducing the influence of the transformer on other devices in the wind turbine.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] The present application provides a wind power generation device, which includes:

[0008] A tower has a receiving cavity.

[0009] A main engine is arranged at the top of the tower. The main engine has a cabin and a wind turbine arranged in the cabin. The wind turbine includes a generator and a control unit. The generator is signal connected with the control unit.

[0010] A transformer is arranged at one end of the receiving cavity away from the ground or in the cabin. When the transformer is arranged in the cabin, the transformer is arranged on the side of the cabin close to the generator and away from the control unit. The transformer is electrically connected with the generator.

[0011] A magnetic shield is arranged between the transformer and the generator, and in a direction from the generator to the transformer, a projected area of the magnetic shield covers a projected area of the transformer.

[0012] In some embodiments, the magnetic shield comprises a shield body and an extension located at an edge of the shield body and extending towards a side of the transformer, the extension and the shield body together define a recessed pocket, and the transformer is arranged in the pocket.

[0013] In some embodiments, the magnetic shield is made of silicon steel.

[0014] In some embodiments, the wind power generation device further comprises a thermal insulation member arranged between the transformer and the generator and stacked with the magnetic shield, and in a direction from the generator to the transformer, a projected area of the thermal insulation member covers a projected area of the transformer.

[0015] In some embodiments, the thermal insulation member comprises at least one of ceramic fiber, glass fiber, aluminum silicate fiber, rock wool, aerogel.

[0016] In some embodiments, an exhaust passage is arranged in the nacelle, an air inlet hole and an air outlet hole are arranged on a cabin wall of the nacelle, the air inlet hole and the air outlet hole respectively communicate with the exhaust passage, a cooling fan is further arranged in the exhaust passage to generate a cooling airflow, and at least one of the thermal insulation member, the transformer and the generator is arranged on a flow path of the cooling airflow.

[0017] In some embodiments, at least one side of the thermal insulation member is provided with a liquid cooling plate, the liquid cooling plate is in direct contact with a surface of the thermal insulation member, the liquid cooling plate has a cooling channel therein configured to flow a cooling medium.

[0018] In some embodiments, a mounting seat is arranged in the nacelle, and the transformer is detachably arranged on the mounting seat.

[0019] In some embodiments, the wind power generation device further comprises a damping member arranged between the transformer and the mounting seat.

[0020] In some embodiments, the damping member comprises at least one of an elastic pad, a spring and a damping shock absorber.

[0021] The wind power generation device provided by the embodiment of the present application comprises a tower, a main engine, a transformer and a magnetic shield, wherein the tower has a containing cavity, a fan is arranged at the top of the tower, the fan comprises a nacelle and a fan arranged in the nacelle, the fan comprises a generator and a control unit, the generator and the control unit are signal connected, and the transformer is arranged at one end of the containing cavity away from the ground or in the nacelle. Compared with arranging the transformer on the ground, arranging the transformer at one end of the containing cavity away from the ground or in the nacelle shortens the distance of electric energy transmission between the fan and the transformer. Because the electric energy loss is the product of the square of current and resistance in the process of electric energy transmission, the greater the resistance is, the greater the electric energy loss is in the process of electric energy transmission. Because the distance of electric energy transmission is proportional to the resistance of electric energy transmission in the distance, the size of the electric energy loss between the fan and the transformer is converted into the length of the distance between the fan and the transformer. The shorter the distance between the fan and the transformer is, the smaller the total resistance is, and the less the electric energy loss is. Therefore, arranging the transformer at one end of the containing cavity away from the ground or in the nacelle can reduce the electric energy loss between the fan and the transformer.

[0022] Moreover, compared with arranging the transformer outside the wind power generation device, for example, arranging the transformer outside the tower at one end away from the ground or outside the nacelle, arranging the transformer at one end of the containing cavity away from the ground or in the nacelle makes the maintenance and repair of the transformer more convenient and safe, and the transformer is not affected by the external environment, for example, dust and haze in the environment can cause dust particles to adhere to the transformer arranged outside the wind power generation device, thereby affecting the heat dissipation of the transformer and causing the transformer to overheat and affect normal operation.

[0023] In addition, when the transformer is arranged in the nacelle, the transformer is arranged on the side close to the generator and away from the control unit and is electrically connected with the generator, so as to shorten the electric energy transmission distance between the generator in the fan and the transformer and reduce the electric energy loss between the generator in the fan and the transformer. Moreover, the transformer itself generates an electromagnetic field, and the transformer is away from the control unit to reduce the influence of the electromagnetic field on the control unit. In addition, a magnetic shield is arranged between the transformer and the generator, and the projection area of the magnetic shield covers the projection area of the transformer in the direction from the generator to the transformer, so as to further reduce the influence of the electromagnetic field generated by the transformer on the generator and the control unit and improve the reliability of the transformer arranged in the nacelle.

[0024] In addition to the technical problems solved by the above-described embodiments of the present application, the technical features constituting the technical solutions and the beneficial effects brought by these technical features, the other technical problems solved by the battery pack dismounting device provided by the embodiments of the present application, the other technical features contained in the technical solutions and the beneficial effects brought by these technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0026] Figure 1 A structural schematic diagram of a wind power generation device provided by an embodiment of the present application is shown in the figure.

[0027] Figure 2 A structural schematic diagram of a fan provided by an embodiment of the present application is shown in the figure.

[0028] Figure 3 A structural schematic diagram of the relative position relationship between a transformer and a generator provided by an embodiment of the present application is shown in the figure.

[0029] Figure 4 A structural schematic diagram of another view of a magnetic shielding provided by an embodiment of the present application is shown in the figure.

[0030] Figure 5 A structural schematic diagram of a mounting structure of a transformer provided by an embodiment of the present application is shown in the figure.

[0031] Explanation of reference signs:

[0032] 10 - wind power generation device

[0033] 100 - tower; 110 - accommodating cavity

[0034] 200 - main machine; 210 - machine cabin; 220 - fan; 221 - generator; 222 - control unit

[0035] 300 - transformer

[0036] 400 - magnetic shielding; 410 - shielding body; 420 - extension; 430 - folding cavity

[0037] 500 - heat insulation; 510 - liquid cooling plate

[0038] 600 - mounting seat

[0039] 700 - damping member DETAILED DESCRIPTION

[0040] To make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application. The embodiments described below and the features in the embodiments can be combined with each other without conflict, if possible.

[0041] Wind energy is a clean and renewable energy. Converting wind energy into electric energy can reduce the dependence on traditional fossil energy and help achieve diversified development of energy.

[0042] In order to facilitate the conversion of wind energy into electric energy, the embodiments of the present application provide a wind power generation device. Wind energy is converted into mechanical energy and then into electric energy through the wind power generation device.

[0043] In some embodiments, after the wind energy is converted into electric energy by the wind turbine in the wind power generation device, the electric energy is transmitted to the user through long-distance transmission. During the transmission process, the output electric current of the wind turbine in the wind power generation device is high due to the low output voltage, and the total resistance is large during the long-distance transmission of the electric energy. Therefore, the electric energy loss between the wind turbine and the user is high. To reduce the electric energy loss, a transformer is arranged on the ground near the wind power generation device before the electric energy is transmitted to the user, so as to increase the output voltage of the wind turbine in the wind power generation device and reduce the output current, thereby reducing the electric energy loss between the transformer and the user. However, the electric energy loss between the wind turbine and the transformer is still high when the transformer is arranged on the ground near the wind power generation device.

[0044] To solve the problem of high electric energy loss between the wind turbine and the transformer, the present application designs a wind power generation device to reduce the high electric energy loss between the wind turbine and the transformer.

[0045] As Figure 1 and Figure 2As shown, the wind power generation device 10 comprises a tower 100 and a main machine 200 arranged above the tower 100, the tower 100 has a containing cavity 110, the main machine 200 comprises a machine cabin 210 and a fan 220 arranged in the machine cabin 210, and the transformer 300 is arranged at one end of the containing cavity 110 away from the ground or in the machine cabin 210. Compared with arranging the transformer 300 on the ground, arranging the transformer 300 at one end of the containing cavity 110 away from the ground or in the machine cabin 210 shortens the distance of the power transmission between the fan 220 and the transformer 300. Since the power loss is the product of the current square and the resistance in the power transmission process, the greater the resistance, the greater the power loss in the power transmission process. Moreover, the power transmission distance is proportional to the resistance of the power transmission in the distance. Therefore, the size of the power loss between the fan 220 and the transformer 300 is converted into the length of the distance between them. The shorter the distance between them, the smaller the total resistance, and the less the power loss. Therefore, arranging the transformer at one end of the containing cavity away from the ground or in the machine cabin can reduce the power loss between the fan 220 and the transformer 300. In addition, it can also reduce the use of ground space.

[0046] Moreover, arranging the transformer 300 at one end of the containing cavity 110 away from the ground or in the machine cabin 210 makes the maintenance and repair of the transformer 300 more convenient and safe, and the transformer 300 is not affected by the external environment, such as dust and haze in the environment, which can cause dust particles to adhere to the transformer 300 arranged outside the wind power generation device 10, thereby affecting the heat dissipation of the transformer 300 and causing the transformer 300 to overheat and affect normal operation.

[0047] Furthermore, compared with arranging the transformer 300 at one end of the containing cavity 110 away from the ground, arranging the transformer 300 in the machine cabin 210 can reduce the distance between the fan 220 and the transformer 300 and reduce the power loss therebetween. However, the distance between the fan 220 and the transformer 300 is reduced, which can cause the fan 220 to be affected by the electromagnetic field and heat generated by the transformer 300. Compared with arranging the transformer 300 in the machine cabin 210, arranging the transformer 300 at one end of the containing cavity 110 away from the ground can cause the fan 220 to be less affected by the electromagnetic field and heat generated by the transformer 300. However, arranging the transformer 300 in the machine cabin 210 can make the power transmission distance between the transformer 300 and the fan 220 closer, which can further reduce the power loss between the fan 220 and the transformer 300.

[0048] Therefore, the following embodiments take the transformer 300 arranged in the cabin 210 as an example, and corresponding isolation measures are taken for the electromagnetic field and heat generated by the transformer 300 in the process of listing embodiments, so as to improve the reliability of the transformer 300 arranged in the cabin 210.

[0049] As shown in Figure 2 , the fan 220 includes a generator 221 and a control unit 222, and the generator 221 is signal connected with the control unit 222. Since the fan 220 converts wind energy into electric energy through the generator 221, that is, the fan 220 transmits electric energy out through the generator 221, therefore, arranging the transformer 300 in the cabin 210 can further reduce the distance between the generator 221 and the transformer 300, thereby further reducing the electric energy loss in the process of electric energy transmission between the generator 221 and the transformer 300.

[0050] Specifically, the transformer 300 is arranged in the cabin 210 close to the generator 221 and away from the control unit 222, and is electrically connected with the generator 221. Since the transformer 300 may generate a magnetic field during operation, which affects the signal transmission of the controller, therefore, arranging the transformer 300 close to the generator 221 and away from the control unit 222 can reduce the influence of arranging the transformer 300 in the cabin 210 on the control unit 222 while further reducing the distance between the generator 221 and the transformer 300.

[0051] Therefore, in some embodiments, as shown in Figure 3 , the wind power generation device 10 further includes a magnetic shield 400, which is arranged between the transformer 300 and the generator 221, so as to isolate the electromagnetic field generated by the transformer 300 in the direction in which the transformer 300 points to the generator 221 and the control unit 222, thereby reducing the electromagnetic influence of the transformer 300 on the generator 221 and the control unit 222. In addition, along the direction from the generator 221 to the transformer 300, the projection area of the magnetic shield 400 covers the projection area of the transformer 300, so as to improve the reliability of the magnetic shield 400 in isolating the electromagnetic field generated by the transformer 300.

[0052] In some other embodiments, the magnetic shield 400 can also be arranged around the transformer 300 on the side, upper surface and lower surface, and the magnetic shield 400 can also be arranged in the form of being wrapped on the box body of the transformer 300, that is, the magnetic shield 400 is arranged integrally with the box body of the transformer 300, so as to reduce the occupied space of the magnetic shield 400.

[0053] Specifically, in combination with Figure 3 and Figure 4As shown, the magnetic shielding member 400 comprises a shielding body 410 and an extension 420 extending from the edge of the shielding body 410 and towards the side of the transformer 300, the extension 420 and the shielding body 410 jointly form a concave cavity 430, and the transformer 300 is arranged in the cavity 430, so that the transformer 300 is completely covered in the protection range of the magnetic shielding member 400, and the reliability of the electromagnetic field isolation of the transformer 300 is further improved.

[0054] In combination Figure 3 And Figure 4 As shown, the magnetic shielding body 410 can be flat or pot-shaped with a concave middle, and the extension 420 is not limited to being arranged at the top of the magnetic shielding body 410, so the extension 420 can also be arranged on both sides of the magnetic shielding body 410 to form the cavity 430, so that the magnetic shielding body 410 can isolate the electromagnetic field generated from the top of the transformer 300, the side of the transformer 300 opposite to the magnetic shielding body 410, and the two side surfaces adjacent to the side surface, thereby further improving the reliability of the electromagnetic field isolation of the transformer 300.

[0055] In some embodiments, the magnetic shielding member 400 is made of silicon steel, and in addition, the magnetic shielding member 400 can also be made of a permalloy piece, an amorphous alloy piece, etc. with the ability to shield the magnetic field.

[0056] In addition, because the generator 221 and the transformer 300 generate a large amount of heat during continuous operation, the heat transfer between the transformer 300 and the generator 221 is avoided by arranging the transformer 300 in the cabin 210, which affects the normal operation between the two, such as Figure 3 As shown, the wind power generation device 10 further comprises a heat insulation member 500 arranged between the transformer 300 and the generator 221 and stacked with the magnetic shielding member 400, and the projection area of the heat insulation member 500 covers the projection area of the transformer 300 in the direction from the generator 221 to the transformer 300, so that the transformer 300 is completely covered in the protection range of the heat insulation member 500, and the reliability of the heat insulation member 500 in isolating heat is improved.

[0057] In some embodiments, as shown in Figure 3 The heat insulation member 500 is directly in contact with and stacked with the magnetic shielding member 400, which can save the space of the cabin 210 occupied by the heat insulation member 500, improve the space utilization rate of the cabin 210, increase the heat transfer thermal resistance, and further improve the reliability of the heat insulation member 500 in isolating heat. In addition, when the magnetic shielding member 400 is made of metal material, the heat transferred from the transformer 300 to the heat insulation member 500 can be dissipated more quickly, and the accumulation of heat on the heat insulation member 500 is reduced.

[0058] And, as Figure 3 shown, the magnetic shielding 400 is arranged between the transformer 300 and the generator 221, and the heat insulation 500 is arranged between the magnetic shielding 400 and the generator 221, so that the heat can be dissipated to a certain extent by the magnetic shielding 400 before reaching the heat insulation 500.

[0059] In other embodiments, the heat insulation 500 and the magnetic shielding 400 can also be arranged in the direction from the generator 221 to the transformer 300, and the projection area of the heat insulation 500 and the projection area of the magnetic shielding 400 both cover the projection area of the transformer 300, in which case, the heat insulation 500 and the magnetic shielding 400 are not limited to which one is closer to the transformer 300, but the space occupied by the heat insulation 500 and the magnetic shielding 400 needs to be considered, which reduces the utilization rate of the space in the cabin 210.

[0060] In some embodiments, the heat insulation 500 includes at least one of ceramic fiber, glass fiber, aluminum silicate fiber, rock wool, aerogel, and the like. For example, the heat insulation 500 can be a plate-shaped structure made of each of the ceramic fiber, the glass fiber, the aluminum silicate fiber, the rock wool, and the aerogel alone, or a composite plate-shaped structure made of two, three, or even four or five of the ceramic fiber, the glass fiber, the aluminum silicate fiber, the rock wool, and the aerogel.

[0061] In addition, as Figure 3 shown, the liquid cooling plate 510 is arranged on at least one side of the heat insulation 500, the liquid cooling plate 510 is in direct contact with the surface of the heat insulation 500, the liquid cooling plate 510 has a cooling channel therein, and the cooling channel is configured to flow a cooling medium. By increasing the liquid cooling plate 510 to assist in heat dissipation, the heat generated by the transformer 300 and the generator 221 is controlled, so that the heat is transported to the outside of the cabin, the accumulation of heat around the heat insulation 500 is reduced, and the reliability of the heat insulation 500 for heat insulation is further improved.

[0062] The liquid cooling plate 510 can be formed by bending and winding a cooling pipe, and the cooling channel is formed in the cooling pipe. The cooling method includes but is not limited to the circulation cooling of water, ethanol, acetone, and other media under the action of capillary suction or the circulation cooling of mineral oil, silicon oil, deionized water, ethylene glycol solution, fluorinated liquid, and other media under the action of temperature difference. During the cooling process, the cooling channel absorbs the heat transmitted by the transformer 300 and the generator 221, and releases heat at the condensation section of the cooling channel. The condensation section can be arranged outside the cabin 210 to exchange heat with the high-altitude environment. Of course, fins or cooling fans can also be added to the condensation section to improve the heat dissipation efficiency.

[0063] In some embodiments, a liquid cooling plate 510 is provided on at least one side of the heat insulation member 500. For example, the liquid cooling plate 510 is provided on the side of the heat insulation member 500 closer to the transformer 300. Similarly, the liquid cooling plate 510 can also be stacked with the heat insulation member 500. The liquid cooling plate 510 is disposed between the magnetic shield 400 and the heat insulation member 500. With this arrangement, after the metal magnetic shield 400 dissipates a portion of the heat generated by the transformer 300, the liquid cooling plate 510 transports the remaining heat isolated by the heat insulation member 500 to the outside of the nacelle 210, thereby further isolating the heat generated by the transformer from the generator and improving the reliability of the heat insulation member 500 in isolating heat.

[0064] In some other embodiments, liquid cooling plates 510 are provided on both sides of the heat insulation member 500 so that the heat generated by the transformer 300 and the generator 221 on both sides of the heat insulation member 500 is transported to the outside of the engine compartment 210 by the corresponding liquid cooling plates 510. Of course, this method needs to take cost into consideration.

[0065] To further dissipate heat, an exhaust channel is provided in the engine room 210. Air inlets and exhaust vents are provided on the bulkhead of the engine room 210. The air inlets and exhaust vents are connected to the exhaust channel. A cooling fan is also provided in the exhaust channel to generate cooling airflow. At least one of the heat insulation component 500, transformer 300 and generator 221 is located in the flow path of the cooling airflow, thereby further reducing the accumulation of heat inside the engine room 210.

[0066] In some embodiments, air inlets and exhaust outlets can be formed by opening through holes in the bulkhead of the nacelle 210. The air inlets and exhaust outlets can be respectively located at the bow and stern of the nacelle 210, consistent with the direction of wind flow in the high-altitude environment. This allows the entire nacelle 210 to form an exhaust channel. In addition, a cooling fan can be installed at the location where the exhaust channel connects to the exhaust outlet to control the flow of cooling air in the exhaust channel. Of course, since the arrangement of the transformer 300, the heat insulation component 500, and the generator 221 is not necessarily from the bow to the stern of the nacelle 210, when opening the air inlets and exhaust outlets, it is possible to consider opening the air inlets on the side of the bow of the nacelle 210 near the heat insulation component 500, the transformer 300, or the generator 221 to ensure that at least one of the heat insulation component 500, the transformer 300, and the generator 221 is located in the flow path of the cooling air, thereby further avoiding the accumulation of heat at any of the three components.

[0067] In addition, such as Figure 5 As shown, a mounting base 600 is provided inside the nacelle 210, and the transformer 300 is detachably mounted on the mounting base 600 to facilitate the quick installation of the transformer 300.

[0068] In some embodiments, the connection between the mounting seat 600 and the nacelle 210, and between the mounting seat 600 and the transformer 300 includes, but is not limited to, bolt-nut connection, quick connection clamp connection, mortise and tenon connection, welding, etc., but the welding method is not convenient for dismounting the transformer 300, and is not conducive to the replacement or repair of the transformer 300. When the bolt-nut connection, quick connection clamp connection, mortise and tenon connection, etc. are used between the transformer 300 and the mounting seat 600, corresponding bolt mounting holes, quick connection clamp clamping positions, tenon and mortise in the mortise and tenon connection can be reserved on the mounting seat 600 and the transformer 300, so that the installation of the transformer 300 on the mounting seat 600 is more convenient.

[0069] In some embodiments, for the convenience of the installation of the transformer 300 on the mounting seat 600, the transformer 300 is modularized into a transformer body module, a high-voltage switch module and a low-voltage switch module. The transformer body module includes a core, a winding, an insulating material, a tap changer, a heat sink and the like. The high-voltage switch module includes, but is not limited to, a circuit breaker, a disconnector, a load switch, a fuse, a current transformer, a voltage transformer, a relay protector, an arrester and the like. The low-voltage switch module includes, but is not limited to, a circuit breaker, a disconnector, a fuse, a current transformer, a voltage transformer, a relay protector, a capacitor bank, a surge protector and the like. In this way, each device and component included in the transformer 300 is integrated in each module, thereby facilitating the transportation and installation of the transformer 300.

[0070] As shown in Figure 5 The wind power generation device 10 further includes a damping member 700 arranged between the transformer 300 and the mounting seat 600 to reduce the vibration of the transformer 300 relative to the nacelle 210, improve the stability of the core, winding and other components inside the transformer 300, and reduce the noise during the operation of the transformer 300. Of course, during the installation of the transformer 300, the bottom of the transformer 300 is also provided with a mounting interface corresponding to the damping member 700 to facilitate the installation of the corresponding damping member.

[0071] For example, the damping member includes at least one of an elastic pad, a spring and a damping shock absorber. The elastic pad includes, but is not limited to, natural rubber, nitrile rubber, fluororubber, silicone rubber, etc. The spring can be selected in terms of quantity or elasticity according to the weight of the transformer 300.

[0072] In some embodiments, the transformer 300 involved in the above embodiments includes, but is not limited to, a dry-type transformer, an oil-immersed transformer, a double-winding transformer, a three-winding transformer, etc.

[0073] It should be noted that a reference to "one embodiment," "an embodiment," "example embodiment," "some embodiments," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.

[0074] In general, terminology can be understood at least in part from usage in context. For example, terms, such as "one or more" as used herein, can be understood as describing any feature, structure, or characteristic in a singular or multiple sense, depending at least in part on the context in which the term is used. Similarly, terms, such as "a," "an," or "the," again can be understood as describing either a singular or plural number of any feature, structure, or characteristic, depending at least in part on the context in which the term is used.

[0075] It will be readily understood that the terms "on," "above," and "over," as used herein, should not be construed as limiting the location of one element relative to another, but rather should be construed as indicating a relative position at a distance above, below, or in any other direction relative to another element. Further, the terms "on," "above," and "over," as used herein, should not be construed as limiting the location of one element relative to another, but rather should be construed as indicating a relative position at a distance above, below, or in any other direction relative to another element.

[0076] Further, spatially relative terms, such as "beneath," "below," "lower," "above," "upper," and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90° or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0077] Finally, it should be noted that the above-described embodiments are merely exemplary of the application and should not be used in a manner to limit the scope of the application. Those skilled in the art will be able to make modifications and / or substitutions for elements disclosed without departing from the scope of the application.

Claims

1. A wind power generation device, characterized in that, include: The tower has a accommodating cavity; The main unit is located at the top of the tower. The main unit has a nacelle and a wind turbine installed in the nacelle. The wind turbine includes a generator and a control unit. The generator is signal-connected to the control unit. The transformer is located at one end of the accommodating cavity away from the ground or inside the engine compartment. When the transformer is located inside the engine compartment, it is located on the side closer to the generator and farther from the control unit, and the transformer is electrically connected to the generator. A magnetic shielding element is disposed between the transformer and the generator, and along the direction from the generator to the transformer, the projected area of ​​the magnetic shielding element covers the projected area of ​​the transformer.

2. The wind power generation equipment according to claim 1, characterized in that, The magnetic shielding component includes a shielding body and an extension located at the edge of the shielding body and extending toward the transformer. The extension and the shielding body together form a recessed cavity, and the transformer is disposed within the cavity.

3. The wind power generation equipment according to claim 2, characterized in that, The magnetic shielding component is made of silicon steel.

4. The wind power generation equipment according to any one of claims 1-3, characterized in that, The wind power generation equipment also includes a heat insulation component, which is disposed between the transformer and the generator and is stacked with the magnetic shielding component. Along the direction from the generator to the transformer, the projected area of ​​the heat insulation component covers the projected area of ​​the transformer.

5. The wind power generation equipment according to claim 4, characterized in that, The thermal insulation component includes at least one of ceramic fiber, glass fiber, aluminosilicate fiber, rock wool, and aerogel.

6. The wind power generation equipment according to claim 5, characterized in that, The engine room is provided with an exhaust channel, and the engine room wall is provided with an air inlet and an air outlet. The air inlet and the air outlet are respectively connected to the exhaust channel. The exhaust channel is also provided with a cooling fan to generate cooling airflow. At least one of the heat insulation component, the transformer and the generator is located in the flow path of the cooling airflow.

7. The wind power generation equipment according to claim 4, characterized in that, At least one side of the heat insulation component is provided with a liquid cooling plate, which is in direct contact with the surface of the heat insulation component. The liquid cooling plate has a cooling channel configured for the flow of a cooling medium.

8. The wind power generation equipment according to claim 1, characterized in that, An installation base is provided inside the cabin, and the transformer is detachably mounted on the installation base.

9. The wind power generation equipment according to claim 8, characterized in that, The wind power generation equipment also includes vibration damping components, which are disposed between the transformer and the mounting base.

10. The wind power generation equipment according to claim 9, characterized in that, The damping component includes at least one of an elastic pad, a spring, and a damping damper.

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