Box transformer substation replacement device

Abstract

The invention relates to a box transformer substation replacement device which is used for a wind generating set, the wind generating set comprises a cabin, a tower and a transformer arranged outside the cabin, the box transformer substation replacement device comprises a lifting assembly, the lifting assembly comprises a first driving part and a connecting cable, the first driving part is connected with the connecting cable and retracts and releases the connecting cable, and the first driving part is connected with the cabin; one end of the connecting cable away from the first driving part is connected with the transformer; the conveying assembly comprises a base body, a butt joint part, two or more adsorption parts and a second driving part, the butt joint part, the adsorption parts and the second driving part are arranged on the base body, each adsorption part is configured to be in adsorption connection with the tower, and the second driving part is connected with the adsorption parts and configured to drive the adsorption parts to move so that the conveying assembly can move relative to the tower in the height direction of the tower. The docking member is configured to connect with a transformer. According to the invention, the replacement of the transformer hung below the wind generating set is facilitated, and the safety performance in the replacement process of the transformer can be ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power, and particularly to a transformer replacement device. Background Art

[0002] The transformers of wind turbine generators, especially those of offshore units, usually adopt a lower-hanging design, which can greatly reduce the design cost of the generator nacelle, reduce the occupied space inside the nacelle, and also shorten the overall length of the nacelle. Especially in view of the current trend of continuously decreasing unit prices of wind turbines, medium-speed permanent magnet wind turbines in the entire industry are basically designed with the transformers hanging below.

[0003] The lower-hanging design of the transformer poses great challenges to the subsequent replacement of the transformer. In the prior art, there are problems such as poor safety in the replacement device, which is not conducive to the safe replacement of the transformer. Summary of the Invention

[0004] Embodiments of the present invention provide a transformer replacement device, which is conducive to meeting the replacement of the transformer designed to hang below the wind turbine generator and can ensure the safety performance during the replacement process of the transformer.

[0005] On the one hand, according to an embodiment of the present invention, a transformer replacement device for a wind turbine generator is proposed. The wind turbine generator includes a nacelle, a tower, and a transformer disposed outside the nacelle. The transformer replacement device includes: a lifting assembly, including a first driving member and a connecting cable. The first driving member is connected to the connecting cable and winds and unwinds the connecting cable. The first driving member is connected to the nacelle, and the end of the connecting cable away from the first driving member is connected to the transformer; a transporting assembly, including a base body, a docking member, more than two adsorption members, and a second driving member disposed on the base body. Each adsorption member is configured to be adsorbed and connected to the tower. The second driving member is connected to the adsorption member and is configured to drive the adsorption member to move, so that the transporting assembly moves relative to the tower in the height direction of the tower. The docking member is configured to be connected to the transformer.

[0006] According to an aspect of an embodiment of the present invention, the adsorption member includes a magnetic adsorption accessory. The magnetic adsorption accessory is either slidably connected or rotatably connected to the base body. The second driving member is configured to drive the magnetic adsorption accessory to move or rotate relative to the base body.

[0007] According to an aspect of an embodiment of the present invention, a guiding portion extending in a first direction is provided on the base body. The magnetic adsorption accessory is movably connected to the guiding portion. The second driving member is configured to drive the magnetic adsorption accessory to move along the guiding portion. The magnetic adsorption accessory is configured to be adsorbed and connected to the tower.

[0008] According to an aspect of an embodiment of the present invention, the guiding portion includes a sliding groove provided on the base body. The magnetic adsorption accessory partially extends into the sliding groove and is slidably connected to the base body.

[0009] According to one aspect of the embodiments of the present invention, the magnetic adsorption accessory is in the shape of a rotating wheel, the magnetic adsorption accessory is rotatably connected to the base body, and the second driving member is configured to drive the magnetic adsorption accessory to rotate relative to the base body.

[0010] According to one aspect of the embodiments of the present invention, the adsorption component further includes a suction cup, the suction cup is connected to the magnetic adsorption accessory, and the magnetic adsorption accessory is configured to be adsorbed and connected to the tower through the suction cup.

[0011] According to one aspect of the embodiments of the present invention, the adsorption component further includes an air pipe and an air pump, the air pipe is communicated with the inner cavity of the suction cup and the air pump, and the air pump is configured to extract the gas in the suction cup or inject gas into the suction cup.

[0012] According to one aspect of the embodiments of the present invention, the adsorption component further includes a protective body, the protective body is arranged to cover the magnetic adsorption accessory, and the rigidity of the protective body is less than that of the magnetic adsorption accessory.

[0013] According to one aspect of the embodiments of the present invention, the adsorption component further includes a collector and a controller, the collector is configured to collect the acceleration information of the wind turbine generator set, and the controller is configured to control the current value obtained by the magnetic adsorption accessory according to the acceleration information.

[0014] According to one aspect of the embodiments of the present invention, the adsorption component protrudes from the base body in the second direction and the protruding part can be adsorbed and connected to the tower, and the absolute value of the difference in the sizes of at least two adsorption components protruding from the base body in the second direction is greater than zero.

[0015] According to one aspect of the embodiments of the present invention, the docking member includes a telescopic cylinder and a connecting body, the telescopic cylinder is connected between the connecting body and the base body, and the docking member is docked with the transformer through the connecting body.

[0016] According to one aspect of the embodiments of the present invention, the lifting assembly further includes a spreader, and a spreader is connected to the side of the connecting cable away from the first driving member.

[0017] According to the box-type transformer replacement device provided by the embodiments of the present invention, it includes a lifting component and a transporting component. The connecting cable of the lifting component can be connected to the transformer. By retracting and releasing the connecting cable through the first driving member, the rising and falling of the transformer can be driven. The transporting component includes a base body, a docking member arranged on the base body, more than two adsorption components and a second driving member. By the second driving member, the adsorption components can be driven to move relative to the tower in the height direction of the tower. The setting of the docking member facilitates the docking between the transporting component and the transformer after rising to a predetermined position, and enables the transporting component to always support between the transformer and the tower during the descending and ascending processes of the transformer, so that the transformer will not collide with the tower, ensuring safety. The adsorption components are configured to be adsorbed and connected to the tower, so that the adsorption components can be adsorbed on the tower and will not be separated from the tower during the independent rising or falling along the tower. And when the overall shaking of the wind turbine generator set is relatively large, the relative position of the adsorption components and the transformer connected thereto can be fixed relative to the tower by increasing the adsorption force between the adsorption components and the tower. After the wind turbine generator set is relatively stable, it can continue to rise or fall along the tower. The box-type transformer replacement device provided by the present application can not only meet the replacement requirements of the transformer, but also ensure the safety of the transformer during the replacement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The features, advantages and technical effects of the exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0019] Figure 1 is a schematic diagram of the cooperation between the box-type transformer replacement device of an embodiment of the present application and a wind turbine generator set;

[0020] Figure 2 is a schematic structural diagram of the lifting component of an embodiment of the present invention;

[0021] Figure 3 is a schematic structural diagram of the transporting component of an embodiment of the present invention;

[0022] Figure 4 is a schematic structural diagram of the transporting component of another embodiment of the present invention;

[0023] Figure 5 is a schematic structural diagram of the transporting component of still another embodiment of the present invention;

[0024] Figure 6 is a schematic structural diagram of the transporting component of yet another embodiment of the present invention.

[0025] Wherein:

[0026] 100 - tower; 200 - nacelle; 300 - transformer; 400 - impeller; 500 - generator; 600 - floating foundation;

[0027] 10 - Lifting assembly; 11 - First driving member; 12 - Connecting cable; 13 - Suspension device;

[0028] 20 - Conveying assembly; 21 - Base body; 211 - Guiding portion; 22 - Docking member; 221 - Telescopic cylinder; 222 - Connecting body; 23 - Adsorption component; 231 - Magnetic adsorption accessory; 232 - Suction cup; 233 - Protective body; 234 - Vent pipe; 235 - Air pump; 24 - Second driving member;

[0029] X - First direction; Y - Second direction.

[0030] In the drawings, like parts are designated by like reference numerals. The drawings are not drawn to actual scale. Detailed implementation manners

[0031] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by showing examples of the present invention. In the drawings and the following description, at least some of the well-known structures and technologies are not shown in order to avoid unnecessarily obscuring the present invention; and, for clarity, the dimensions of some structures may be exaggerated. In addition, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0032] The directional terms appearing in the following description are all the directions shown in the drawings, and do not limit the specific structures of the box substation replacement device and the wind turbine generator set of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] Such as Figure 1As shown in the figure, the wind turbine generator set includes a tower 100, a nacelle 200, a generator 500, an impeller 400, and a transformer 300. The nacelle 200 is arranged above the tower 100, and the generator 500 is arranged in the nacelle 200, which can be located inside the nacelle 200. Of course, it can also be located outside the nacelle 200. The impeller 400 includes a hub and blades. The blades are connected to the hub, and the hub is connected to the rotor of the generator. When the wind acts on the blades, the blades drive the hub to rotate, and then drive the rotor of the generator 500 to rotate relative to the stator, realizing the conversion of wind energy into electrical energy. The transformer 300 can be arranged outside the nacelle 200 and can adopt a hanging design. The transformer 300 can be electrically connected to the generator 500 and can be used to boost the converted electrical energy for grid connection to ensure the power consumption demand.

[0034] For the transformer 300 of the wind turbine generator set, especially the structure of the offshore unit, a hanging design is usually adopted, which can greatly reduce the design cost of the nacelle 200, reduce the occupied space inside the nacelle 200, and the overall length of the nacelle 200 can also be reduced. Especially in view of the current trend of the continuous reduction of the unit price of the unit, the medium-speed permanent magnet units in the whole industry are basically designed according to the hanging design of the transformer 300.

[0035] The hanging design of the transformer 300 brings great challenges to the subsequent replacement of the transformer 300. There are problems such as poor safety in the existing box-type transformer replacement devices, which is not conducive to the safe replacement of the transformer 300.

[0036] As Figures 1 to 3 shown, based on this, an embodiment of the present application provides a box-type transformer replacement device, including a lifting component 10 and a transporting component 20. The lifting component 10 includes a first driving member 11 and a connecting cable 12. The first driving member 11 is connected to the connecting cable 12 and winds and unwinds the connecting cable 12. The first driving member 11 is connected to the nacelle 200, and one end of the connecting cable 12 away from the first driving member 11 is connected to the transformer 300. The transporting component 20 includes a base body 21 and a docking member 22, more than two adsorption components 23, and a second driving member 24 arranged on the base body 21. Each adsorption component 23 is configured to be adsorbed and connected to the tower 100. The second driving member 24 is connected to the adsorption component 23 and is configured to drive the adsorption component 23 to move, so that the transporting component 20 moves relative to the tower 100 along the height direction of the tower 100. The docking member 22 is configured to be connected to the transformer 300.

[0037] When the box-type transformer replacement device is in use, the first driving member 11 of the lifting component 10 can be arranged inside the nacelle 200, so that one end of the connecting cable 12 away from the first driving member 11 is connected to the transformer 300. In order to ensure the docking requirement with the lifting component 10, a connection interface can be correspondingly arranged on the transformer 300, which can adopt forms such as a lifting ring and a hook to facilitate the connection with the connecting cable 12.

[0038] The adsorption component 23 includes, but is not limited to, at least one of magnetic adsorption and sucker adsorption to ensure the connection requirements with the tower 100.

[0039] On the tower 100, the adsorption component 23 includes, but is not limited to, moving in a sliding form or a rolling form.

[0040] A plurality of adsorption components 23 can be synchronously driven by a second driving member 24. Of course, each adsorption component 23 can also be correspondingly provided with a second driving member 24, and each second driving member 24 is used to drive the corresponding adsorption component 23 to move up or down along the tower 100.

[0041] The docking member 22 is used to dock with the transformer 300. The docking member 22 and the transformer 300 can be detachably connected by fasteners such as bolts. The docking member 22 can be connected to the outer wall surface of the transformer 300. Of course, the docking member 22 can also extend into the transformer 300 and be connected to the transformer 300.

[0042] The box-type transformer replacement device provided by an embodiment of the present application includes a lifting assembly 10 and a transporting assembly 20. The connecting cable 12 of the lifting assembly 10 can be connected to the transformer 300. By winding and unwinding the connecting cable 12 through the first driving member 11, the transformer 300 can be driven to rise and fall. The transporting assembly 20 includes a base body 21, more than two adsorption components 23, a second driving member 24, and a docking member 22. The second driving member 24 can drive the adsorption components 23 to move relative to the tower 100 in the height direction of the tower 100. The setting of the docking member 22 facilitates the docking between the transporting assembly 20 and the transformer 300 after rising to a predetermined position, and enables the transporting assembly 20 to always support between the transformer 300 and the tower 100 during the descent and ascent of the transformer 300, so as not to collide with the tower 100 and ensure safety. Since the adsorption components 23 are configured to be adsorbed and connected to the tower 100, the adsorption components 23 can be adsorbed on the tower 100 and will not be separated from the tower 100 during the process of rising or falling along the tower 100. Moreover, when the overall wind turbine generator shakes greatly, the adsorption force between the adsorption components 23 and the tower 100 can be increased to fix the positions of the adsorption components 23 and the transformer 300 connected thereto relative to the tower 100, and then continue to rise or fall along the tower 100 after the wind turbine generator is relatively stable. The box-type transformer replacement device provided by the present application can not only meet the replacement requirements of the transformer 300, but also ensure the safety of the transformer 300 during the replacement process.

[0043] Such as Figure 3 、 Figure 4As shown, in some alternative embodiments, for the box transformer replacement device provided by an embodiment of the present application, the adsorption component 23 includes a magnetic attachment 231, and the magnetic attachment 231 is either slidably connected or rotatably connected to the base body 21, and the second driving member 24 is configured to drive the magnetic attachment 231 to move or rotate relative to the base body 21.

[0044] The magnetic attachment 231 and the base body 21 can be connected in a sliding connection manner. Of course, they can also be connected in a rotational connection manner, which can be specifically determined according to the shape of the magnetic attachment 231.

[0045] When the magnetic attachment 231 and the base body 21 are slidably connected, the second driving member 24 can be configured to drive the magnetic attachment 231 to move relative to the base body 21, thereby causing the entire transportation assembly 20 to move along the tower 100. When the magnetic attachment 231 and the base body 21 are slidably connected, one second driving member 24 can be correspondingly provided for each adsorption component 23. By independently driving their respective adsorption components 23 through the second driving member 24, more than two adsorption components 23 can be divided into two groups and can be controlled by their respective second driving members 24, so that the magnetic attachments 231 of one group of adsorption components 23 are driven by the second driving member 24 and move relative to the tower 100 to a predetermined position. During the movement, the magnetic attachments 231 of the other group of adsorption components 23 are adsorbed on the tower 100. When the magnetic attachments 231 of one group move to the predetermined position, they are adsorbed on the tower 100 and remain fixed in position, so that the magnetic attachments 231 of the other group of adsorption components 23 are driven by the corresponding second driving member 24 and move relative to the tower 100 to the predetermined position. By setting alternately in this way, the entire transportation assembly 20 moves on the tower 100.

[0046] When the magnetic attachment 231 and the base body 21 are rotatably connected, the second driving member 24 can be configured to drive the magnetic attachment 231 to roll relative to the base body 21, thereby causing the entire transportation assembly 20 to move along the tower 100. When the magnetic attachment 231 and the base body 21 are rotatably connected, more than two adsorption components 23 can be correspondingly provided for the same second driving member 24. Of course, more than two adsorption components 23 can also be respectively provided for one second driving member 24. One or more second driving members 24 can be used to drive the magnetic attachments 231 to roll synchronously, so that the entire transportation assembly 20 moves on the tower 100.

[0047] For the box transformer replacement device provided by an embodiment of the present application, by making the adsorption component 23 include the magnetic attachment 231, the connection between the transportation assembly 20 and the tower 100 can be realized by using the magnetic adsorption function, which is conducive to overcoming the gravity effect during the movement of the transportation assembly 20 on the tower 100 and ensuring the smoothness and safety of the movement.

[0048] In some alternative embodiments, for the box transformer replacement device provided by an embodiment of the present application, a guiding portion 211 extending along the first direction X is provided on the base body 21. The magnetic adsorption attachment 231 is movably connected to the guiding portion 211. The second driving member 24 is configured to drive the magnetic adsorption attachment 231 to move along the guiding portion 211, and the magnetic adsorption attachment 231 is configured to be adsorbed and connected to the tower 100.

[0049] When the box transformer replacement device is applied to a wind turbine generator, the first direction X can be the axial direction of the tower 100. The second driving member 24 can be connected to the magnetic adsorption attachment 231 in a direct or indirect connection manner to drive the magnetic adsorption attachment 231 to move relative to the guiding portion 211 along the first direction X.

[0050] The guiding portion 211 includes one of a chute or a slide rail.

[0051] For the box transformer replacement device provided by an embodiment of the present application, by providing the guiding portion 211 and making the magnetic adsorption attachment 231 movably connected to the guiding portion 211, it is beneficial to ensure that the magnetic adsorption attachment 231 can move along a predetermined trajectory and the stability during the movement.

[0052] Optionally, the second driving member 24 can adopt the structural form of a telescopic cylinder. Of course, it can also adopt the form of a driving motor. When adopting the structural form of a driving motor, a transfer member can be provided, such as a gear-rack, a worm and worm gear and other transfer structures to connect the second driving member 24 to the magnetic adsorption attachment 231 and transfer the power of the second driving member 24 to the magnetic adsorption attachment 231.

[0053] As Figure 3 shown, exemplarily, the second driving member 24 can be made to adopt the structural form of a telescopic cylinder. Taking the number of adsorption components 23 as two, the two adsorption components 23 are divided into two groups, with one adsorption component 23 in each group. It can be made that the upper adsorption component 23 in the first direction X is adsorbed on the tower 100, and the lower adsorption component 23 is released. Control the second driving member 24 connected to the upper adsorption component 23 to extend. Due to the adsorption of the upper adsorption component, the second driving member 24 will drive the base body 21 and the lower adsorption component 23 to move relative to the tower 100 along the first direction X until the upper adsorption component 23 is located at the limit position of the guiding portion 211 in the first direction X. Control the lower adsorption component 23 to be adsorbed on the tower 100, release the upper adsorption component 23, and control the second driving member 24 connected to the lower adsorption component 23 to extend, so that the base body 21 and the upper adsorption component 23 move synchronously along the first direction X. Alternately in this way, the movement requirement of the entire transportation component 20 on the tower 100 is completed.

[0054] Optionally, the magnetic adsorption attachment 231 can adopt the structural form of a magnet, and the electromagnetic adsorption method can be optionally adopted, which is beneficial to the control of the magnetic adsorption force.

[0055] like Figure 4 As shown, in some optional embodiments, the magnetic adsorption member 231 is in the shape of a rotating wheel, the magnetic adsorption member 231 is rotatably connected to the base 21, and the second driving member 24 is configured to drive the magnetic adsorption member 231 to rotate relative to the base 21.

[0056] When the magnetic adsorption member 231 is in the shape of a rotating wheel, the second driving member 24 can use a power source such as a driving motor to drive each magnetic adsorption member 231 to rotate synchronously, so that the magnetic adsorption member 231 can move along the tower 100 while ensuring the magnetic adsorption connection with the tower 100.

[0057] like Figure 5 as well as Figure 6 As shown, in some optional embodiments, a box-type transformer replacement device provided by an embodiment of the present application, the adsorption component 23 also includes a suction cup 232, the suction cup 232 is connected to the magnetic adsorption component 231, and the magnetic adsorption component 231 is configured to be adsorbed and connected to the tower 100 through the suction cup 232.

[0058] A box-type transformer replacement device provided in an embodiment of the present application enables the adsorption component 23 to also include a suction cup 232, thereby facilitating the realization of a dual adsorption effect of suction cup adsorption and magnetic adsorption, ensuring the connection strength between the adsorption component 23 and the tower 100, and improving the overall safety of the box-type transformer replacement device during operation on the tower 100.

[0059] like Figure 5 As shown, optionally, when the magnetic adsorption member 231 adopts a polygonal columnar structure, the number of suction cups 232 connected to the magnetic adsorption member 231 can be one, or more than two, and can be one. The magnetic adsorption member 231 can be provided with a suction cup 232 on at least one end face away from the base 21. When the magnetic adsorption member 231 is magnetically adsorbed to the tower 100, the suction cup 232 can be squeezed so that the suction cup 232 is adsorbed to the tower 100, thereby ensuring the adsorption requirement between the transport device and the tower 100.

[0060] like Figure 6 As shown, optionally, when the magnetic adsorption member 231 is in the shape of a rotating wheel, a suction cup 232 may be provided on the rotating circumference of the magnetic adsorption member 231, and the number of the suction cups 232 may be more than two and spaced apart along the rotating circumference. Through the above arrangement, the magnetic adsorption member 23 can also achieve the connection requirement with the tower 100 through the suction cups 232 in the corresponding area during the rotation process.

[0061] like Figure 5As shown, in some alternative embodiments, for the box-type transformer replacement device provided by an embodiment of the present application, the adsorption component 23 may further include a ventilation pipe 234 and an air pump 235. The ventilation pipe 234 is in communication with the inner cavity of the suction cup 232 and the air pump 235. The air pump 235 is configured to extract the gas in the suction cup 232 or inflate the suction cup 232 with gas.

[0062] By providing the air pump 235 and the ventilation pipe 234, when it is necessary to connect the suction cup 232 to the tower 100, the air in the suction cup 232 can also be sucked by the air pump 235, so that the air pressure in the suction cup 232 is less than the external air pressure. Under the action of the external atmospheric pressure, the suction cup 232 can be stably adsorbed on the tower 100. When it is necessary to separate the corresponding magnetic attachment 231 from the tower 100, the air pump 235 can be used to inflate the suction cup 232, so that the air pressure in the suction cup 232 is consistent with the external atmospheric pressure, and the suction cup 232 can be separated from the tower 100.

[0063] For the box-type transformer replacement device provided by an embodiment of the present application, by making the adsorption component 23 further include a ventilation pipe 234 and an air pump 235, and using the negative pressure adsorption and release between the suction cup 232 and the tower 100, the response speed of the suction cup 232 is improved.

[0064] As Figures 3 to 6 As shown, in some alternative embodiments, for the box-type transformer replacement device provided by an embodiment of the present application, the adsorption component 23 further includes a protector 233. The protector 233 is arranged to cover the magnetic attachment 231, and the stiffness of the protector 233 is less than the stiffness of the magnetic attachment 231.

[0065] Optionally, the protector 233 includes but is not limited to forms such as a buffer pad and a protective film. Optionally, the protector 233 can be a rubber pad, etc.

[0066] For the box-type transformer replacement device provided by an embodiment of the present application, by providing the protector 233, it can not only protect the magnetic attachment 231, avoiding rust and other problems caused by dust, rain and snow water, but also prevent the magnetic attachment 231 from rigidly colliding with the wall surface of the tower 100 when directly adsorbing on the tower 100, resulting in damage to the tower 100.

[0067] Optionally, when the adsorption component 23 includes a protector 233 and a suction cup 232, the suction cup 232 can be connected to the magnetic attachment 231 through the protector 233.

[0068] In some alternative embodiments, for the box-type transformer replacement device provided by an embodiment of the present application, the adsorption component 23 further includes a collector and a controller. The collector is configured to collect the acceleration information of the wind turbine generator, and the controller is configured to control the current value obtained by the magnetic attachment 231 according to the acceleration information.

[0069] Optionally, the collector includes, but is not limited to, an acceleration sensor, or a wind speed acquisition device, etc. When it is a wind speed acquisition device, etc., the acceleration information of the wind turbine can be obtained by inferring from the acquired wind speed value.

[0070] The acceleration information can be understood as the acceleration information of the wind turbine when it is shaking. When it is a land-based wind turbine, it can be understood as the motion acceleration information generated by the shaking under the action of wind force. When it is an offshore wind turbine, it can be understood as the motion acceleration information when the floating foundation drives components such as the tower 100 to shake as a whole under the action of seawater and / or wind force.

[0071] The current value obtained by the controller configured to control the magnetic attachment 231 according to the acceleration information can be understood as follows: when the acceleration value feedback by the acceleration information is too large, it indicates that the wind turbine shakes greatly. At this time, the magnetic attachment 231 needs to have a large connection strength with the tower 100. The connection strength can be increased by increasing the current value obtained by the magnetic attachment 231, so that the magnetic attachment 231 has a greater magnetic adsorption force, thereby increasing the connection strength with the tower 100. When the acceleration value feedback by the acceleration information is small, it indicates that the wind turbine shakes less. At this time, the magnetic attachment 231 does not need to have an excessive connection strength with the tower 100. The connection strength between the magnetic attachment 231 and the tower 100 can be reduced, so that the connection strength between the magnetic attachment 231 and the tower 100 is appropriate. Furthermore, when the shaking amplitude of the wind turbine is small, on the basis of meeting the connection strength requirements between the magnetic attachment 231 and the tower 100, the power consumption is reduced and the cost is saved.

[0072] The box transformer replacement device provided by an embodiment of the present application can control the current value obtained by the magnetic attachment 231 to be adapted according to the acquired acceleration information of the wind turbine by setting a collector and a controller. It can not only ensure the connection strength between the magnetic attachment 231 and the tower 100 under different working conditions, improve safety, but also match the appropriate current value to achieve the purpose of saving electricity. Especially for offshore floating wind turbines, it is more conducive to ensuring the safety performance of the box transformer replacement device during use.

[0073] In some optional embodiments, for the box transformer replacement device provided by an embodiment of the present application, the adsorption component 23 protrudes from the base body 21 in the second direction Y, and the protruding part can be adsorbed and connected to the tower 100. The absolute value of the size difference between at least two adsorption components 23 protruding from the base body 21 in the second direction Y is greater than zero.

[0074] Taking two adsorption components 23 as an example, there may be a difference in the protruding dimensions of the two components in the second direction Y, so that one may be higher than the other. When the magnetic adsorption component 231 is in the shape of a wheel, the structure may be the same, but the diameter may be designed to be different. For example, in a normal situation where wind load is not considered, the structure of the adsorption components 23 may be designed to be the same. If long-term monsoon wind direction eccentric loads are encountered, the structure of the adsorption components 23 may be set to different sizes. The large adsorption component 23 may withstand the additional wind load to ensure that the transformer 300 is vertical and stable during the lowering process.

[0075] In some optional embodiments, a box-type transformer replacement device provided by an embodiment of the present application, the docking member 22 includes a telescopic cylinder 221 and a connecting body 222, the telescopic cylinder 221 is connected between the connecting body 222 and the base 21, and the docking member 22 is docked with the transformer 300 through the connecting body 222.

[0076] In a box transformer replacement device provided by an embodiment of the present application, the docking member 22 adopts the above-mentioned structural form. When the transport assembly 20 moves to a predetermined position of the tower 100, the telescopic cylinder 221 is controlled to extend, so that the connector 222 moves to the side where the transformer 300 is located and docks with the docking port reserved for the transformer 300, thereby ensuring the connection requirements with the transformer 300. In the process of lowering the transformer 300, the transport assembly 20 is always clamped between the transformer 300 and the tower 100, thereby avoiding collision between the transformer 300 and the tower 100 and ensuring the connection strength.

[0077] like Figure 2 As shown, in some optional embodiments, in a box-type transformer replacement device provided by one embodiment of the present application, the lifting assembly 10 further includes a sling 13 , and the sling 13 is connected to the side of the connecting rope 12 facing away from the first driving member 11 .

[0078] The shape of the sling 13 can match the shape of the transformer 300, and the sling 13 can be connected to the interface reserved for the transformer 300. By setting the sling 13, it is convenient to connect the connecting cable 12 with the transformer 300, thereby ensuring the safety and stability of the transformer 300 during the lifting process.

[0079] like Figures 1 to 6 As shown, a box transformer replacement device provided by an embodiment of the present application can, when in use, set the first driving member 11 of the lifting assembly 10 in the cabin 200, and make the connecting cable 12 dock with the transformer 300. When a sling 13 is included, the connecting cable 12 can be docked with the transformer 300 through the sling 13.

[0080] The conveying assembly 20 can climb to a predetermined height of the tower 100 by itself. Exemplarily, the conveying assembly 20 can start from the bottom of the tower 100 and move along the height direction of the tower 100 towards the top of the tower 100. The second driving member 24 is used to drive the adsorption member 23 to move along the first direction X, so that the whole conveying assembly 20 climbs towards the top of the tower 100. The connection strength between the conveying assembly 20 and the tower 100 can be controlled by controlling the magnetic adsorption force of the magnetic adsorption accessory 231 and / or the negative pressure value formed by the air pump 235 sucking the air in the suction cup 232. When the conveying assembly 20 climbs to a predetermined position at the top of the tower 100, the adsorption strength between the adsorption member 23 and the tower 100 is increased to fix their relative positions. Then, the telescopic cylinder 221 of the docking member 22 is controlled to extend, so that the connecting body 222 moves towards the side where the transformer 300 is located to the docking position of the transformer 300, and can be docked with the transformer 300 through fasteners such as bolts.

[0081] Then, the transformer 300 is separated from the nacelle 200, and the first driving member 11 is controlled to release the connecting cable 12, so that the transformer 300 is lowered. During the lowering process, the conveying assembly 20 can support between the tower 100 and the transformer 300 and move with the transformer 300 to avoid the transformer 300 colliding with the tower 100 during the lowering process. And when the wind turbine generator shakes too much, the adsorption member 23 can be made to adsorb on the tower 100, and the first driving member 11 is controlled to stop releasing the connecting cable 12, so that the relative positions of the transformer 300 and the box-type transformer replacement device as a whole relative to the tower 100 are fixed. After the shaking of the wind turbine generator weakens, the adsorption force between the adsorption member 23 and the tower 100 is reduced or removed, and the connecting cable 12 is continuously released until the transformer 300 is lowered to the bottom of the tower 100, and optionally, it can be lowered to the wind turbine foundation, such as the floating foundation 600.

[0082] After the transformer 300 is repaired or replaced, it is reconnected to the connecting cable 12 and the docking member 22. The first driving member 11 is used to recover the connecting cable 12, so that the transformer 300 is lifted. During the lifting process, the conveying assembly 20 can also support between the tower 100 and the transformer 300 and move with the transformer 300 to avoid the transformer 300 colliding with the tower 100 during the lifting process. And when the wind turbine generator shakes too much, the adsorption member 23 can be made to adsorb on the tower 100, and the first driving member 11 is controlled to stop recovering the connecting cable 12, so that the relative positions of the transformer 300 and the box-type transformer replacement device as a whole relative to the tower 100 are fixed. After the shaking of the wind turbine generator weakens, the adsorption force between the adsorption member 23 and the tower 100 is reduced or removed, and the connecting cable 12 is continuously recovered until the repaired or replaced transformer 300 rises to the bottom of the tower 100 and is connected to the nacelle 200. The docking member 22 and the connecting cable 12 are separated from the transformer 300, and the box-type transformer replacement device is recovered.

[0083] The box-type transformer replacement device provided by each of the above embodiments of the present application can be used for the replacement of the transformer 300 of a wind turbine generator, and is particularly beneficial for the maintenance and replacement of the transformer 300 in the form of a hanging structure under the transformer of a floating wind turbine generator, solving the problem of replacing the current floating box-type transformer under-mounted scheme, and being beneficial to solving the safety defect of no protection for the vibration of the tower 100 in the replacement of the current fixed box-type transformer under-mounted scheme. Moreover, the modular tooling design of the lifting assembly 10 and the transporting assembly 20 can achieve generalization for different wind turbine generators. The structural form of the adsorption component 23 can realize the high-altitude positioning of the tooling and the transformer 300 to ensure safety. At the same time, the design of the telescopic cylinder 221 of the docking component 22 can provide additional support under extreme working conditions and realize non-separation and integration with the tower 100.

[0084] Although the present invention has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A box transformer replacement device, used for a wind turbine generator set, wherein the wind turbine generator set comprises a nacelle, a tower and a transformer arranged outside the nacelle, It is characterized in that The box-type transformer replacement device comprises: A lifting assembly, comprising a first driving member and a connecting cable, wherein the first driving member is connected to the connecting cable and retracts and releases the connecting cable, the first driving member is connected to the nacelle, and an end of the connecting cable away from the first driving member is connected to the transformer; A transport assembly comprises a base and a docking piece arranged on the base, two or more adsorption components and a second driving piece, each of the adsorption components is configured to be adsorbed and connected to the tower, the second driving piece is connected to the adsorption component and is configured to drive the adsorption component to move so that the transport assembly moves relative to the tower along the height direction of the tower, and the docking piece is configured to be connected to the transformer.

2. The box-type transformer replacement device according to claim 1, It is characterized in that The adsorption component includes a magnetic adsorption component, and the magnetic adsorption component is connected to the base in a sliding connection or a rotational connection. The second driving component is configured to drive the magnetic adsorption component to move or rotate relative to the base.

3. The box-type transformer replacement device according to claim 2, It is characterized in that The base is provided with a guide portion extending along a first direction, the magnetic adsorption member is movably connected to the guide portion, the second driving member is configured to drive the magnetic adsorption member to move along the guide portion, and the magnetic adsorption member is configured to be adsorbed and connected to the tower.

4. The box-type transformer replacement device according to claim 3, It is characterized in that The guide portion comprises a slide groove arranged on the base, and the magnetic adsorption component partially extends into the slide groove and is slidably connected with the base.

5. The box-type transformer replacement device according to claim 2, It is characterized in that The magnetic adsorption component is in the shape of a rotating wheel, and is rotatably connected to the base. The second driving component is configured to drive the magnetic adsorption component to rotate relative to the base.

6. The box-type transformer replacement device according to any one of claims 2 to 5, It is characterized in that The adsorption component further includes a suction cup, which is connected to the magnetic adsorption component, and the magnetic adsorption component is configured to be adsorbed and connected to the tower through the suction cup.

7. The box-type transformer replacement device according to claim 6, It is characterized in that The adsorption component further includes a ventilation tube and an air pump. The ventilation tube is connected to the inner cavity of the suction cup and the air pump. The air pump is configured to extract gas from the suction cup or inflate gas into the suction cup.

8. The box-type transformer replacement device according to any one of claims 2 to 5, It is characterized in that The adsorption component further includes a protection body, which is arranged to cover the magnetic adsorption component, and the rigidity of the protection body is smaller than the rigidity of the magnetic adsorption component.

9. The box-type transformer replacement device according to any one of claims 2 to 5, It is characterized in that The adsorption component further includes a collector and a controller. The collector is configured to collect acceleration information of the wind turbine generator set, and the controller is configured to control the current value obtained by the magnetic adsorption component according to the acceleration information.

10. The box-type transformer replacement device according to claim 1, It is characterized in that The adsorption component is arranged to protrude from the base in the second direction, and the protruding portion can be adsorbed and connected to the tower, and the absolute value of the size difference between at least two adsorption components protruding from the base in the second direction is greater than zero.

11. The box-type transformer replacement device according to claim 1, It is characterized in that The docking piece includes a telescopic cylinder and a connecting body, the telescopic cylinder is connected between the connecting body and the base, and the docking piece is docked with the transformer through the connecting body.

12. The box-type transformer replacement device according to claim 1, It is characterized in that The lifting assembly further comprises a sling, and the sling is connected to a side of the connecting rope facing away from the first driving member.

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