CN109441739B

CN109441739B - Method and device for replacing stator cooling fin of wind generating set

Info

Publication number: CN109441739B
Application number: CN201811611421.2A
Authority: CN
Inventors: 沈星星; 杨勇; 程伟
Original assignee: Jiangsu Goldwind Science and Technology Co Ltd
Current assignee: Jiangsu Goldwind Science and Technology Co Ltd
Priority date: 2018-12-27
Filing date: 2018-12-27
Publication date: 2022-07-08
Anticipated expiration: 2038-12-27
Also published as: CN109441739A

Abstract

The invention provides a method and a device for replacing stator cooling fins of a wind generating set, wherein the method for replacing the stator cooling fins comprises the following steps: rotating the stator fins about a first end of the stator fins such that the stator fins are inclined with respect to a plane in which the through holes are located and a second end of the stator fins, opposite the first end, is located at the through holes; translating the first end of the stator fin a predetermined distance, maintaining the second end at the through hole; and moving the stator cooling fins away from the upper support, and adjusting the inclination angle of the stator cooling fins relative to the plane where the through holes are located in the moving process to enable the stator cooling fins to pass through the through holes. According to the replacing method and the replacing device for the stator cooling fin of the wind generating set, the working strength can be reduced, the replacing efficiency is improved, and the maintenance cost is reduced.

Description

Method and device for replacing stator cooling fin of wind generating set

Technical Field

The invention relates to a method and a device for replacing a stator cooling fin of a wind generating set.

Background

As the single-machine capacity of wind turbine generator systems tends to become larger, the size and weight of the large components of the wind turbine generator systems are also gradually increasing. For a generator of a wind generating set, more generated energy can be brought by adding corresponding windings, coils, magnetic steel and the like, but meanwhile, the requirement of the generator on a cooling environment control system is more and more strict, and the traditional generator wind cooling environment control system cannot meet the heat dissipation effect required by a large-capacity generator, so that more and more high-power wind generating sets start to adopt a water cooling environment control system scheme to ensure that internal components cannot be damaged to cause the failure of the whole generator due to overhigh internal temperature when the generator works.

For a generator of a high-power wind generating set adopting a water-cooling environment control system, a circle of stator cooling fins, a ventilation pipeline and a cooling motor are arranged in the generator, the failure rate of the three components is high, and the components need to be replaced if the components fail.

Disclosure of Invention

For the replacement of the stator cooling fins, the stator cooling fins are arranged on the innermost side of the generator, the arrangement space is small, and personnel are inconvenient to enter the generator for replacement, so that the replacement of the stator cooling fins is difficult, the whole replacement work is stopped if no proper replacement method is available, the whole replacement process consumes time and labor, the higher unit operation and maintenance cost is caused, and the generating efficiency of the unit is reduced. Therefore, in order to solve the problems of difficult replacement, time and labor waste and the like of the stator cooling fin, the invention provides a method and a device for replacing the stator cooling fin of the wind generating set, which have simple and convenient operation steps, can reduce the working strength and improve the replacement efficiency.

One aspect of the present invention provides a method of replacing a stator fin of a wind turbine generator system, the wind turbine generator system including a plurality of stator fins uniformly distributed around a stator of the wind turbine generator system, an upper bracket, and a lower bracket, each of the stator fins being detachably mounted on the upper bracket and located between the upper bracket and the lower bracket, the lower bracket having a through hole formed therein. The replacement method of the stator cooling fin comprises the following steps: rotating the stator fins about a first end of the stator fins such that the stator fins are inclined with respect to a plane in which the through holes are located and a second end of the stator fins, opposite the first end, is located at the through holes; translating the first end of the stator fin a predetermined distance, maintaining the second end at the through hole; and moving the stator cooling fins away from the upper support, and adjusting the inclination angle of the stator cooling fins relative to the plane where the through holes are located in the moving process to enable the stator cooling fins to pass through the through holes.

Preferably, the step of rotating the stator fins about the first ends of the stator fins so that the stator fins are inclined relative to the plane in which the through holes lie may comprise: positioning shafts are respectively arranged on two sides of the first end part of the stator cooling fin; the connection between the stator cooling fin and the upper bracket is released so that the first end portion of the stator cooling fin is supported by the positioning shaft.

Preferably, translating the first end of the stator fin a predetermined distance, the step of maintaining the second end at the through hole may comprise: a guide is mounted below the upper bracket such that the positioning shaft can slide along the guide, maintaining the first end of the stator fin in translation.

Preferably, the wind generating set further comprises a heat dissipation motor and a ventilation duct, the ventilation duct is arranged below the lower support, the heat dissipation motor is connected to the ventilation duct, and the replacement method of the stator cooling fins further comprises the following steps: before the step of rotating the stator cooling fins around the first ends of the stator cooling fins so that the stator cooling fins are inclined relative to the plane where the through holes are located, the heat dissipation motor and the ventilation duct are removed and transferred to the base of the wind generating set.

Preferably, the replacement method of the stator cooling fins may further include: after the stator cooling fins pass through the through holes, the stator cooling fins are rotated to be in a horizontal state.

Preferably, the guide may include: the arc-shaped groove is formed according to an arc shape; a horizontal slot extending horizontally from an end of the arcuate slot; and the flaring groove extends from the tail end of the horizontal groove, and the height of the flaring groove is gradually increased along the extending direction of the flaring groove.

Preferably, the replacement method of the stator cooling fins may further include: and installing sensors on the first end and the second end of the stator cooling fins, and stopping the movement of the stator cooling fins along the current movement direction or moving the stator cooling fins along the direction opposite to the current movement direction when the sensors sense that the first end and/or the second end contacts with an obstacle.

Another aspect of the present invention provides a device for replacing a stator cooling fin of a wind turbine generator system, the device comprising: the holding device is provided with a pair of holding arms which are oppositely arranged, and the distance between the pair of holding arms is adjustable; and a moving device on which the holding device is mounted, the holding device being movable in a horizontal direction and a vertical direction by the moving device, rotating in the horizontal direction.

Preferably, the mobile device may include: a bottom support; a first connecting plate disposed on the bottom bracket and movable in a horizontal direction with respect to the bottom bracket; a second connecting plate, a first end of which is rotatably connected to the first connecting plate; and a support rod disposed at the second end of the second connecting plate, wherein the holding device is disposed on the support rod and is movable in a vertical direction along the support rod.

Preferably, the holding device may further include a holding rail in which first ends of the pair of holding arms are disposed and movable along the holding rail, and second ends of the pair of holding arms are rotatably provided with the chucking mechanism.

According to the replacing method and the replacing device of the stator cooling fin of the wind generating set, the stator cooling fin can move according to the specific track by installing the positioning shaft and the guide piece, so that the stator cooling fin can smoothly pass through the through hole of the lower support, and the replacement of the stator cooling fin is realized.

In addition, according to the replacing method and the replacing device for the stator cooling fin of the wind generating set, the stator cooling fin can be clamped and taken out through the holding device and the carrying device, the carrying device can move in multiple freedom degree directions and can be controlled through remote wireless remote control, personnel do not need to participate in carrying, the working strength of the personnel is reduced, the replacing efficiency is improved, and time and labor are saved.

In addition, according to the replacing method and the replacing device of the stator cooling fin of the wind generating set, the replacing tool is simple, the operation is convenient, the replacing efficiency is improved, and meanwhile the maintenance cost is greatly reduced.

Drawings

Fig. 1 is a schematic view showing the position of a stator fin of a wind turbine generator set according to an embodiment of the present invention.

Fig. 2 is a schematic view showing a mounting fence in a method of replacing a stator fin of a wind turbine generator set according to an embodiment of the present invention.

Fig. 3 and 4 are schematic views illustrating disassembly of a heat dissipation motor and a ventilation duct in a replacement method of a stator fin of a wind turbine generator set according to an embodiment of the present invention.

Fig. 5 and 6 are schematic views illustrating a positioning shaft and a guide used in a replacement method of a stator fin of a wind turbine generator set according to an embodiment of the present invention.

Fig. 7 to 11 are schematic views illustrating moving stator fins in a replacement method of the stator fins of the wind turbine generator set according to the embodiment of the present invention.

Fig. 12 is a schematic view showing a handling device of a replacement device of stator fins of a wind turbine generator set according to an embodiment of the present invention.

The reference numbers illustrate:

1: stator fin, 2: upper bracket, 3: lower support, 4: through the hole, 5: base, 6: heat dissipation motor, 7: ventilation duct, 8: positioning shaft, 9: guide, 91: arc-shaped groove, 92: flared groove, 93: horizontal groove, 10: conveying device, 11: guardrail, 20: holding device, 21: holding arm, 211: gear, 212: motor, 22: holding rail, 221: rack, 23: clamping mechanism, 231: fixed jaw, 24: second rotating shaft, 25: motor, 30: moving device, 31: bottom support, 311: track groove, 312: drive member, 3121: motor, 3122: a screw rod, 32: first connecting plate, 33: second connecting plate, 331: motor, 34: first rotating shaft, 35: bracing piece, 351: support sleeve, 352: a lifting rod.

Detailed Description

Embodiments of the present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.

As shown in fig. 1, a wind generating set according to an embodiment of the present invention includes a plurality of stator cooling fins 1 uniformly distributed around a stator of the wind generating set, an upper bracket 2, and a lower bracket 3, each stator cooling fin 1 being detachably mounted on the upper bracket 2 and between the upper bracket 2 and the lower bracket 3, the lower bracket 3 being formed with a passing hole 4.

Specifically, the stator fin 1 may be attached to the inner side (i.e., the side facing the base 5) of the upper bracket 2 by a bolt connection or the like. The lower bracket 3 forms a space in which the stator fin 1 is disposed with the upper bracket 2, and has a passage hole 4 at a position of the lower bracket 3 corresponding to the stator fin 1, for example, as shown in fig. 1, the passage hole 4 may be formed to face an end portion of the stator fin 1 near the base 5, a dimension of the passage hole 4 in a width direction of the stator fin 1 may be larger than a width of the stator fin 1, and a dimension of the passage hole 4 in a length direction of the stator fin 1 is smaller than a length of the stator fin 1, and therefore, the stator fin 1 may not easily pass through the passage hole 4.

In addition, the wind generating set can also comprise a heat dissipation motor 6 and a ventilation pipeline 7. The ventilation duct 7 is connected below the lower bracket 3 (i.e., on the side opposite to the side where the stator fins 1 are located) by a connection method such as bolting. The heat dissipation motor 6 is connected to the inlet of the ventilation duct 7 by means of connection methods such as bolt connection.

A specific replacement method of the stator cooling fin of the wind turbine generator set according to the embodiment of the present invention will be described in detail with reference to fig. 2 to 11, in which some components are omitted in fig. 2 to 11 to show the internal structure in order to clearly show the described key components.

When a certain stator fin 1 of the plurality of stator fins 1 needs to be replaced, the stator fin 1 may be rotated to be positioned above the top of the base 5 for replacement.

At the time of replacement, as shown in fig. 2, a guard rail 11 may be installed on the outside of the seat of the base 5, and as an example, two guard rails 11 may be oppositely provided on the top of the base 5, and a portion of the base 5 between the two guard rails 11 may be formed with an opening (not shown) through which a person or a carrying device can pass, and a component such as a stator fin to be removed or to be installed, which will be described later, can be carried between the inside of the base 5 and the generator.

The guard rail 11 may be used as a temporary step and guard rail when a person enters the generator for maintenance, the arrangement position and number thereof are not particularly limited, and the guard rail 11 may be omitted without the need for a person to enter the inside of the generator or other safety facilities.

Fig. 3 and 4 are schematic views showing a process of detaching the heat dissipation motor 6 and the ventilation duct 7.

In the generator structure shown in fig. 1, since the heat-dissipating motor 6 and the ventilation duct 7 are disposed in the path between the passage hole 4 of the lower bracket 3 and the opening of the base 5, the heat-dissipating motor 6 and the ventilation duct 7 need to be detached before replacing the stator fins 1.

As an example of detaching the heat dissipation motor 6 and the ventilation duct 7, the heat dissipation motor 6 and the ventilation duct 7 may be detached by a carrying device 10 which will be described in detail below. Referring to fig. 12, the carrying device 10 may include a holding device 20 capable of holding an object and a moving device 30 having a moving capability in a direction of a plurality of degrees of freedom, the holding device 20 may be used to hold the heat dissipation motor 6 or the ventilation duct 7, the moving device 30 may make the holding device 20 movable at least in the horizontal and vertical directions, and preferably, the movement of each degree of freedom of the moving device 30 may be operated by a person's wireless remote control.

First, the moving device 30 can be controlled by remote wireless control or preset control program to make the holding device 20 extend into the generator through the opening of the base 5 until the holding device 20 is located at the same level as the heat dissipation motor 6 in the vertical direction, and then the holding device 20 can be moved close to the heat dissipation motor 6 in the horizontal direction until the holding device 20 approximately reaches the position of the heat dissipation motor 6.

Next, by finely adjusting the moving device 30, the holding device 20 is made to substantially correspond to the heat dissipation motor 6 in the vertical direction and the horizontal direction, then the member for holding the object of the holding device 20 is adjusted (for example, the distance between the holding arms 21 and the rotation angle of the gripping mechanism 23, which will be described later) to hold the heat dissipation motor 6 therein, and then the connection relationship between the heat dissipation motor 6 and other members such as the ventilation duct 7 can be released manually or automatically or the like to allow the heat dissipation motor 6 to be freely carried.

Then, the carrying device can be controlled by remote wireless control or preset control programs and the like, so that the heat dissipation motor 6 is conveyed to the upper platform or other positions of the base 5, and the disassembly of the heat dissipation motor 6 is completed. For example, the heat dissipation motor 6 may be adjusted to be horizontal by the carrying device 10, and then the heat dissipation motor 6 is moved away from the ventilation duct 7 by the moving device 30, and then the heat dissipation motor 6 is transferred from the generator to the upper platform of the base 5.

In addition, if the heat dissipation motor 6 is inclined during the transportation process, the heat dissipation motor 6 can be adjusted to be kept in a horizontal state.

Next, as shown in fig. 4, the ventilation duct 7 may be detached by a similar procedure using a carrying device, and a repetitive description will be omitted herein.

Further, in the above process, although the carrying device 10 including the holding device 20 and the moving device 30 is used for carrying, it is only an example of disassembling the heat dissipation motor 6 and the ventilation duct 7, and the configuration of the carrying device is not particularly limited, and the carrying device may be any device or means capable of performing the above disassembling operation, for example, a robot device, a chain block, a chain guide, or the like, or a manual disassembling manner, or the like.

The above-described step of detaching the heat dissipation motor 6 and the ventilation duct 7 is an operation performed by way of example of the generator structure shown in fig. 1, and it should be understood that the above-described step is not essential, and for example, in the case where the heat dissipation motor 6 and the ventilation duct 7 are not provided in the path between the through hole 4 and the opening of the base 5 or the case where the heat dissipation motor 6 and the ventilation duct 7 do not interfere with the replacement of the stator fin 1, the above-described step may be omitted and the stator fin 1 may be directly replaced.

The method of replacing the stator fins will be described in detail below with reference to fig. 5 to 10.

In a first step, the stator fin 1 is rotated around a first end of the stator fin 1 such that the stator fin 1 is inclined with respect to a plane in which the through holes 4 are located, and a second end of the stator fin 1 opposite to the first end is located at the through holes 4.

Specifically, as shown in fig. 5, positioning shafts 8 may be respectively installed at both sides of the first end portion of the stator fin 1, and then the connection between the stator fin 1 and the upper bracket 2 may be released such that the first end portion of the stator fin 1 is supported by the positioning shafts 8 (as shown in fig. 7 and 8). Specifically, after the connection between the stator fin 1 and the upper bracket 2 is released, the first end portion of the stator fin 1 is positionally fixed due to the presence of the positioning shaft 8, and the second end portion of the stator fin 1 can slide down, rotate downward about the first end portion, and when the second end portion falls down to the position of the passing hole 4, the current state of the stator fin 1 is held so that the entire stator fin 1 is inclined with respect to the plane in which the passing hole 4 is located.

In a second step, the first end of the stator fin 1 may be translated by a predetermined distance, keeping its second end in the through hole 4. The predetermined distance of translation is related to the length, inclination angle and size of the passage hole 4 of the stator fin 1, for example, in order to enable the stator fin 1 to pass through the passage hole 4 without the stator fin 1 interfering with the lower bracket 3, the inclination angle of the stator fin 1 with respect to the passage hole 4 may be constantly adjusted while translating the first end of the stator fin 1 so as to keep the second end constantly in the passage hole 4 during the first end constantly approaches the passage hole 4, for example, the second end may be horizontally moved in the passage hole 4, or the second end may be continuously rotated downward in the passage hole 4 with the first end as a rotation axis while the first end is translated.

Preferably, a guide 9 can be mounted below the upper support 2, with the positioning shaft 8 being located in the guide 9, the positioning shaft 8 being slidable along the guide 9, keeping the first end of the stator fin 1 translated.

As shown in fig. 5 and 6, the guide 9 may include an arc-shaped groove 91, a flared groove 92, and a horizontal groove 93, the arc-shaped groove 91 being formed in an arc shape, the horizontal groove 93 extending horizontally from the end of the arc-shaped groove 91, the flared groove 92 extending from the end of the horizontal groove 93, and the height of the flared groove 92 (i.e., the width of the notch) gradually increasing along the direction in which the flared groove 92 extends, for example, as shown in fig. 5, the lower edge of the flared groove 92 may extend straight, and the upper edge thereof may extend obliquely upward.

Referring to fig. 7 and 8, during the translation of the stator fin 1, the entire stator fin 1 can be moved toward the position passing through the hole 4. The first end portion of the stator fin 1 is slidable from the arc-shaped groove 91 of the guide 9 toward the flared groove 92, and the positioning shaft 8 provided on the first end portion is first slid from the arc-shaped groove 91 to the horizontal groove 93 and is slid along the horizontal groove 93 while being supported by the horizontal groove 93.

Preferably, when the positioning shaft 8 is slid into the flared groove 92, the inclination angle of the stator fin 1 may be adjusted such that the stator fin 1 is rotated toward the erected state, the projection of the first end portion of the stator fin 1 on the lower bracket 3 is brought close to the passing hole 4, so that the first end portion of the stator fin 1 is less likely to collide with members (e.g., the lower bracket 3, the generator baffle, etc.) around the passing hole 4 when passing through the passing hole 4 in a later step.

As an example of adjusting the inclination angle of the stator fin 1, in one case, when the first end portion of the stator fin 1 is translated into the flared groove 92, the stator fin 1 may be rotated about the second end portion as an axis, the first end portion may be rotated upward (i.e., the first end portion is raised) about the second end portion, and the inclination angle of the stator fin 1 may be adjusted, so that the stator fin 1 is rotated toward the standing state. In another case, when the first end of the stator fin 1 is translated into the flared groove 92, the stator fin 1 may be rotated about the first end, and the second end may be rotated downward (i.e., the second end is lowered) about the first end, so that the inclination angle of the stator fin 1 is adjusted, and the stator fin 1 may be rotated toward the upright state.

The above-mentioned moving process of the stator cooling fin 1 can be realized by the carrying device 10, for example, the holding device 20 of the carrying device 10 can be inserted into the generator, then the stator cooling fin 1 (for example, the second end portion of the stator cooling fin 1) is held by the holding device 20, then the moving device 30 is controlled to drive the first end portion of the stator cooling fin 1 to move horizontally along the track of the guiding member 9, and when the stator cooling fin is moved to the position of the flared slot 92 or moved to the position to be separated from the guiding member 9, the inclination angle of the stator cooling fin 1 is adjusted to ensure the stator cooling fin.

Further, the size of the guide 9, the size of each slot of the guide 9, is designed according to the moving trajectory of the stator fin 1 to ensure that the stator fin 1 can pass through the passing hole 4 in the lower bracket 3 through a predetermined trajectory. For example, the slot width of the tip of the flared slot 92 may be designed according to the movement space required for the first end of the stator fin 1 to rotate upward about the second end.

Although it is described above that the adjustable stator cooling fin 1 is rotated toward the erected state when the positioning shaft 8 is slid into the flare groove 92 to be easily passed through the passing hole 4 after being disengaged from the guide 9, this operation is not essential and may be omitted.

In the third step, after the stator fin 1 is translated, the stator fin 1 can be moved away from the upper bracket 2, and during the movement, the inclination angle of the stator fin 1 with respect to the plane in which the passage hole 4 is located can be adjusted, so that the entire stator fin 1 passes through the passage hole 4.

For example, the stator fin 1 may be detached from the guide 9, the stator fin 1 may be lowered in the vertical direction by the conveying device, and the inclination angle of the stator fin 1 may be continuously adjusted during the lowering process, thereby ensuring that the stator fin 1 does not collide with other components during the movement.

Further, after the stator fin 1 completely passes through the passing hole 4 of the lower bracket 3, the stator fin 1 can be rotated to be horizontal, and the disassembled stator fin 1 can be placed on the upper platform of the base, completing the disassembly and transfer of the stator fin 1.

In the above method, a sensor may be installed on the first end and the second end of the stator fin 1 (for example, before releasing the connection between the stator fin 1 and the upper bracket 2), and when the sensor senses that the first end and/or the second end contacts an obstacle, the stator fin 1 is stopped from moving in the current moving direction, or the stator fin 1 is moved in a direction opposite to the current moving direction. For example, the sensor may send a sensing signal to the carrying device, and the carrying device adjusts the movement mode according to the sensing signal.

In the above method, the manner of releasing the connection relationship (such as bolting or the like) between the respective components is not particularly limited, and may be released manually or may be released by an automated manner (e.g., an electric wrench or the like). Further, although the above description has been made by taking the carrying device as an example, the carrying device is not limited to this, and the carrying device may be any device or means capable of performing the above-mentioned disassembling operation, for example, a robot device, a chain block, a chain guide, or the like, or a manual disassembling method, as long as the above-mentioned operation method can be performed.

Further, the procedure of the steps performed in the above-described method of disassembling the stator fin 1 may be reversed, to install the stator fin 1, i.e. during disassembly, the second end portion can be first passed through the hole 4, after which the first end portion is translated, and by adjusting the angle of inclination of the stator fins can be transported out through the through holes 4, while during mounting, the first end portion can be passed through the through holes 4, then overlapping in and moving along the slots of the guide member 9, while continuously adjusting the position of the second end portion to adjust the inclination angle of the stator fins, so that the second end of the stator fin can pass through the through hole 4 and, when the first end is moved into the arc-shaped groove 91 of the guide member 9, the second end part can be lifted to rotate around the first end part until the stator cooling fins are horizontal, and then the stator cooling fins are fixedly installed.

The stator cooling fin can move according to a specific track by the method, so that the stator cooling fin can smoothly pass through the through hole of the lower support without interfering with other parts, the disassembly and assembly efficiency of the stator cooling fin is improved, and the accuracy and the safety of the replacement operation are improved.

The replacement device of the stator cooling fin of the wind turbine generator set according to the present invention will be described in detail with reference to fig. 11 and 12.

As described above, the stator fin replacing device may include the carrying device 10, the carrying device 10 may include the holding device 20 and the moving device 30, wherein the holding device 20 has a pair of holding arms 21 oppositely disposed, a distance between the pair of holding arms 21 is adjustable to accommodate the held components (e.g., the stator fins, the heat dissipation motor, the ventilation duct, etc.) of different sizes, the holding device 20 is mounted on the moving device 30, and the holding device 20 is movable in the horizontal direction and the vertical direction by the moving device 30 and rotatable in the horizontal direction.

The holding device 20 may further comprise a holding rail 22, a first end of each holding arm 21 being arranged in the holding rail 22 and being movable along the holding rail 22, a second end of each holding arm 21 being rotatably provided with a clamping mechanism 23, the clamping mechanism 23 being connected to the holding arm 21 by a second swivel axis 24 and being rotatable about the second swivel axis 24 relative to the holding arm 21.

As shown in fig. 11, the holding rail 22 may be formed in a frame form and formed with a rack 221 at an inner side of the frame, and accordingly, the first end of the holding arm 21 may be provided with a gear 211 and a motor 212, the gear 211 being provided in the holding rail 22 and being rollable along the rack 221 by the driving of the motor 212, thereby coordinating the relative positions of the two opposing holding arms 21 so as to be close to or far from each other to ensure that the members of various sizes (e.g., the heat-dissipating motor 6, the ventilation duct 7, the stator fins 1, etc.) are securely clamped.

A motor 25 may be provided on the second end of the holding arm 21 to drive the clamping mechanism 23 to be rotatable about the second axis of rotation 24 to adjust the angle of the clamped member. Preferably, the gripping mechanism 23 may have a plurality of fixing claws 231, the held member may be restricted between the plurality of fixing claws 231, and the inclination angle of the held member may be changed by the rotation of the fixing claws 231.

The mobile device 30 may include: a bottom support 31; a first connecting plate 32, the first connecting plate 32 being provided on the bottom bracket 31 and being movable in a horizontal direction with respect to the bottom bracket 31; a second connecting plate 33, a first end of the second connecting plate 33 being rotatably connected to the first connecting plate 32; and the support rod 35, the support rod 35 is arranged at the second end of the second connecting plate 33. The holding device 20 may be provided on the support bar 35 and may be movable in a vertical direction along the support bar 35.

As shown in fig. 11, the bottom bracket 31 may be formed as two guide rails arranged in parallel, and both end portions of the first connection plate 32 are respectively coupled in the rail grooves 311 of the bottom bracket 31 and can slide along the rail grooves 311.

In order to facilitate the driving of the sliding of the first connecting plate 32, a driving member 312 may be disposed in the track slot 311 to drive the first connecting plate 32 to slide in the track slot 311. The driving member 312 may be any linear driving device, as long as it can drive the sliding of the first connection plate 32. For example, in the embodiment of fig. 11, the drive member 312 may include a motor 3121 and a lead screw 3122. The first link plate 32 can be driven to move along the track groove 311 in the bottom bracket 31 by the motor 3121 driving the lead screw 3122, so that the position of the holding device 20 connected to the first link plate 32 in the extending direction of the bottom bracket 31 can be adjusted.

The first end of the second link plate 33 is connected to the first link plate 32, and is rotatable relative to the first link plate 32 about a first rotation axis 34. The support bar 35 is disposed on the second end of the second connecting plate 33. Thus, the second end of the second connecting plate 33 can rotate the supporting rod 35 around the first rotating shaft 34. In addition, a motor 331 may be mounted on a first end of the second connecting plate 33, and the entire second connecting plate 33 is driven by the motor 331 to rotate around the first rotating shaft 34, so that the detached replacement component (e.g., the stator cooling fin 1, the heat dissipation motor 6, and the ventilation duct 7 described above) may be rotated onto the upper platform of the base, and the component may be transferred.

The holding device 20 may be provided on the support bar 35 and may be movable in a vertical direction along the support bar 35. As an example, the support rod 35 may include a support sleeve 351 and a lift rod 352, the support sleeve 351 being vertically fixed on the second end of the second connection plate 33, and the lift rod 352 being located in the support sleeve 351 and being vertically liftable with respect to the support sleeve 351. The holding device 20 may be fixed to an upper portion of the lifting rod 352 to be lifted in a vertical direction by the lifting rod 352.

As an example, the support sleeve 351 and the lift lever 352 may be formed in a hydraulic cylinder structure, the support sleeve 351 may be formed in a hydraulic cylinder tube, and the lift lever 352 may be formed in a cylinder rod, and movement of the lift lever in the vertical direction may be adjusted by driving the hydraulic cylinder. However, the support rod 35 is not limited to the above configuration, but may be other linear driving means, for example, an electric screw or the like.

Furthermore, sensors may be provided on the holding means 20 and the moving means 30 to stop the current motion or to change the direction of motion when an obstacle is encountered. As an example, as shown in fig. 11, sensors may be provided on the outer sides of the four rims of the holding rail 22 formed in the form of a frame, the outer side of each holding arm 21, the end portion and the side portion of the second connecting plate 33, respectively.

The stator fin exchanging apparatus according to the present invention may further include a positioning shaft 8 and a guide 9. The positioning shaft 8 and the guide 9 are identical in structure and function to those described above.

Specifically, the positioning shaft 8 may be mounted on two opposite side surfaces of the stator fin 1 perpendicularly to the side surfaces of the stator fin 1. The guide 9 is fixed in a position such that the positioning shaft 8 is disposable in the guide 9 and slidable along the guide 9, for example, the guide 9 may be fixed on a bracket (e.g., the upper bracket 6) of a generator of the wind turbine generator set.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.

Claims

1. A method for replacing stator cooling fins of a wind generating set is characterized in that the wind generating set comprises a plurality of stator cooling fins (1), an upper bracket (2) and a lower bracket (3) which are uniformly distributed around a stator of the wind generating set, each stator cooling fin (1) is detachably arranged on the upper bracket (2) and is positioned between the upper bracket (2) and the lower bracket (3), a through hole (4) is formed on the lower bracket (3),

the replacement method of the stator cooling fin (1) comprises the following steps:

rotating the stator fin (1) around a first end of the stator fin (1) such that the stator fin (1) is inclined with respect to a plane in which the through holes (4) are located and a second end of the stator fin (1) opposite to the first end is located at the through holes (4);

translating a first end of the stator fin (1) by a predetermined distance, keeping the second end at the passing hole (4);

moving the stator cooling fins (1) away from the upper support (2), and adjusting the inclination angle of the stator cooling fins (1) relative to the plane of the through holes (4) during the moving process to enable the stator cooling fins (1) to pass through the through holes (4).

2. Method for replacing stator fins of a wind park according to claim 1, wherein the step of rotating the stator fins (1) around the first ends of the stator fins (1) so that the stator fins (1) are inclined with respect to the plane of the passage holes (4) comprises:

positioning shafts (8) are respectively arranged on two sides of the first end part of the stator cooling fin (1);

releasing the connection between the stator cooling fin (1) and the upper bracket (2) such that the first end of the stator cooling fin (1) is supported by the positioning shaft (8).

3. Method for replacing stator fins of a wind park according to claim 2, wherein translating a first end of the stator fin (1) by a predetermined distance, the step of keeping the second end at the passage hole (4) comprises:

-mounting a guide (9) below the upper bracket (2), enabling the positioning shaft (8) to slide along the guide (9), keeping the first end of the stator fin (1) in translation.

4. The method for replacing stator cooling fins of a wind generating set according to claim 1, wherein the wind generating set further comprises a heat dissipation motor (6) and a ventilation duct (7), the ventilation duct (7) is disposed below the lower bracket (3), the heat dissipation motor (6) is connected to the ventilation duct (7),

the replacement method of the stator cooling fin (1) further comprises the following steps:

-removing the heat dissipating motor (6) and the ventilation duct (7) and transferring the heat dissipating motor (6) and the ventilation duct (7) to the base (5) of the wind power plant prior to the step of rotating the stator fins (1) around the first ends of the stator fins (1) so that the stator fins (1) are inclined with respect to the plane in which the through holes (4) are located.

5. The method for replacing stator cooling fins of a wind generating set according to claim 1, wherein the method for replacing stator cooling fins (1) further comprises: rotating the stator cooling fin (1) to a horizontal state after the stator cooling fin (1) passes through the through hole (4).

6. Method for replacing stator fins of a wind park according to claim 3, wherein the guide (9) comprises:

an arc-shaped slot (91), the arc-shaped slot (91) being formed according to an arc;

a horizontal slot (93), the horizontal slot (93) extending horizontally from an end of the arcuate slot (91);

a flared groove (92), the flared groove (92) extending from a distal end of the horizontal groove (93), and a height of the flared groove (92) gradually increasing along a direction in which the flared groove (92) extends.

7. The method for replacing stator cooling fins of a wind generating set according to claim 1, wherein the method for replacing stator cooling fins (1) further comprises:

installing sensors on the first end and the second end of the stator cooling fin (1), and stopping the movement of the stator cooling fin (1) along the current movement direction or moving the stator cooling fin (1) along the direction opposite to the current movement direction when the sensors sense that the first end and/or the second end contact an obstacle.

8. A device for replacing stator cooling fins of a wind generating set, characterized in that the device for replacing stator cooling fins (1) comprises:

a holding device (20), wherein the holding device (20) is provided with a pair of holding arms (21) which are oppositely arranged, and the distance between the pair of holding arms (21) is adjustable;

a moving device (30), the holding device (20) being mounted on the moving device (30), the holding device (20) being movable in a horizontal direction and a vertical direction by the moving device (30), rotating in the horizontal direction.

9. Device for replacing stator cooling fins of a wind park according to claim 8, wherein the moving means (30) comprise:

a bottom seat (31);

a first connecting plate (32), said first connecting plate (32) being arranged on said bottom seat (31) and being movable in a horizontal direction with respect to said bottom seat (31);

a second connecting plate (33), a first end of the second connecting plate (33) being rotatably connected to the first connecting plate (32);

a support bar (35), the support bar (35) being disposed at a second end of the second connecting plate (33),

wherein the holding device (20) is arranged on the support bar (35) and is movable in a vertical direction along the support bar (35).

10. The device for replacing the stator fins of a wind generating set according to claim 8, wherein the holding device (20) further comprises a holding rail (22), the first ends of the pair of holding arms (21) are arranged in the holding rail (22) and can move along the holding rail (22), and the second ends of the pair of holding arms (21) are rotatably provided with a clamping mechanism (23).