Using method of doubly-fed asynchronous generator rotor turning-over device

Abstract

The invention relates to a use method of a doubly-fed asynchronous generator rotor turning-over device, which comprises the following steps of: fixing a rotor turning-over bracket on the ground by using a reinforced pre-embedded foundation bolt and connecting the rotor with the ground when the rotor is turned over, and connecting a rotor turning-over supporting leg with a rotor driving degree shaft head by using an inner hexagon screw and serving as a supporting leg when the rotor is subjected to vertical paint dipping. The rotor is stably erected in the immersion tank, meanwhile, the rotor turning-over support is connected through the connecting pin, the rotor turning-over support and the rotor turning-over supporting leg achieve stable transition of the rotor from the vertical state to the horizontal state through the connecting pin, connection during turning-over is achieved, and at the moment, the large traveling crane hook is hoisted to the non-driving end shaft head through the rotor hoisting shaft; rotor overturning is achieved through the traveling crane and translation.

Description

Technical Field

[0001] The present application relates to the technical field of wind turbine manufacturing, and in particular to a method for using a doubly-fed asynchronous generator rotor turning device. Background Art

[0002] As the power generation of the doubly fed asynchronous generator increases, the volume, weight and length of the rotor are also increasing. At present, the rotor is lifted by a crane with large and small hooks, and the rotor is lifted by ropes to the neutral position on the rotor drive end and non-drive end shaft respectively. This method of lifting is limited by the spacing between the large and small hooks and the lifting angle, and the large and small hooks are prone to derailment, causing great safety hazards. At the same time, the large and small hooks are used to turn over. During the rotor turning process, if the small hook is not stressed for a moment, it will collide with the rotor surface under the action of gravity and inertia, thereby damaging the rotor surface and causing quality accidents. Summary of the Invention

[0003] The present invention aims to address the shortcomings of the existing technology and avoid potential safety hazards by providing a device with a rational structure, simple operation, and ease of use that can safely rotate the rotor and stably position it upright, thereby avoiding potential safety hazards and improving product quality. This device can thereby improve the production efficiency of manufacturers of doubly-fed asynchronous generators, reduce production costs, and avoid product quality risks.

[0004] The present application provides a method for using a doubly-fed asynchronous generator rotor turning device using the following technical solution: A method for using a doubly-fed asynchronous generator rotor turning device, comprising a rotor turning device consisting of a rotor turning bracket, a rotor turning leg, a connecting pin, and an anti-slip bolt and nut, and assisting in the rotor turning by means of auxiliary tooling; the rotor turning bracket is fixed to the ground by means of reinforced pre-buried anchor bolts, and is used to connect to the ground when the rotor is turned over; the rotor turning leg is connected to the shaft head of the rotor driving end and simultaneously enters the tank, serving as a support leg during vertical varnish dipping of the rotor, allowing the rotor to stand stably in the immersion tank; the connecting pin is used to connect the rotor turning bracket and the rotor turning leg; the anti-slip bolt and nut is inserted into a radial through hole at the inlet end of the pin, and is used to prevent the connecting pin from falling off under an unbalanced force state; The auxiliary tooling includes a lifting sleeve, a universal lifting ring, a hook and a U-shaped ring, a lifting rope and a crane. The non-driving end of the rotor is fixedly connected to the non-driving end shaft head by means of the lifting sleeve through a connecting screw, and then the universal lifting ring is installed on the lifting sleeve. A set of ports that can be lifted and moved are assembled through the hook and U-shaped ring, the lifting rope and the crane. By adjusting the crane, moving up and down and left and right, the rotor is rotated from a horizontal state to a vertical state, and then adjusting the crane so that the crane is not under force, the rotor can be supported on the rotor turning bracket by the rotor turning legs. At this time, the anti-slip bolts and nuts are removed, the connecting pin is pulled out, the crane is lifted, and the rotor is moved away from the rotor turning bracket and placed in an upright paint immersion tube or on the ground to realize rotor turning.

[0005] Preferably, the rotor turning bracket is composed of a bottom plate 1, a side plate 1, a side plate 2, a support, a rib plate 1 and a support ear, and each component of the rotor turning bracket is made of steel plates through a welding process, the support is welded on the bottom plate 1, the side plate 1 and the side plate 2 are symmetrically welded with multiple and are arranged on the side around the support, the support ear is welded on the top of the support and two are symmetrically arranged, two coaxial through holes are respectively processed in the middle of the two support ears to serve as universal rings when the rotor turning legs turn over, the rib plate 1 is symmetrically arranged with multiple and are arranged on the side of the two support ears facing away from each other; the bottom plate 1 of the rotor turning bracket is fixed with reinforced embedded anchor bolts and nuts, and then reinforced with high-strength non-shrinkage grouting material C40, which is equivalent to a universal joint with a grounded elevation, with low production cost and easy operation.

[0006] Preferably, the rotor turning support leg is composed of a second bottom plate, a support plate, a second rib plate, a third rib plate and a rotor turning pad, and each component of the rotor turning support leg is made of steel plates through a welding process, and the bottom of the rotor turning pad is processed with bolt holes and light holes, which are mainly connected to the rotor; first, the lifting hole at the end of the rotor driving end shaft head is connected with a bolt through the light hole, so that the rotor turning support leg and the rotor driving end shaft head are axially connected first, and the bolt is connected through the light hole, and the rotor turning support leg is rotated to adjust and align the eight connecting screw hole positions and the shaft head threaded hole positions evenly distributed on the bottom of the rotor turning pad, and then the hexagon socket screw is used to connect and fix the rotor shaft head and the rotor turning support leg, so as to effectively and quickly install the screw; two coaxial through holes are processed in the center of the support plate, thereby forming an internal lifting ear as a universal ring, and the second bottom plate is welded, which acts as a support leg in this tooling, so that the rotor can be stably placed on the ground when placed upright, and the rotor can be turned over and the rotor can stand steadily for weighing.

[0007] Preferably, the auxiliary tooling further includes a rotor bracket, and the rotor bracket is used to set up the rotor.

[0008] Preferably, the rotor turning leg is first assembled on the shaft head of the rotor driving end to support the rotor to stand stably on the ground, and at the same time, the rotor turning leg is connected to the rotor turning bracket through the connecting pin to realize the connection between the rotor driving end and the ground and the ability to rotate 180° in an upright state; then, through the rotation and movement port formed by the auxiliary tooling at the non-driving end of the rotor, by turning on the crane to move up, down, left and right, the rotor can be easily rotated and turned over and landed smoothly, thereby improving production efficiency, reducing production costs, and reducing labor intensity.

[0009] Compared with the prior art, the method for using the doubly-fed asynchronous generator rotor turning device of the present invention has the following beneficial technical effects: The method for using the doubly-fed asynchronous generator rotor turning device of the present invention is as follows: first, the rotor turning bracket is fixed to the ground with reinforced pre-buried anchor bolts, which are used to connect to the ground when the rotor is turned over; the rotor turning legs are connected to the rotor drive shaft head with hexagon socket screws, which serve as legs when the rotor is vertically dipped in paint, allowing the rotor to stand stably in the dipping tank; at the same time, connecting pins are used to connect the rotor turning bracket and the rotor turning legs, so that the rotor can smoothly transition from a vertical state to a horizontal state through the connecting pins, and the turning is connected; at this time, the driving hook is lifted to the non-drive end shaft head through the rotor hoisting shaft, and the rotor is turned over by the driving hook and translation. The device is simple to operate and easy to use, can meet the requirements of safe rotor turning and stable upright placement, avoid safety hazards, and improve product quality. This improves the production efficiency of doubly-fed asynchronous generator manufacturers, reduces production costs, and avoids product quality risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic structural diagram of a doubly-fed asynchronous generator rotor turning device according to the present invention; Figure 2 This is a schematic diagram of the use of a doubly fed asynchronous generator rotor turning device of the present invention. Figure 1 ; Figure 3 This is a method of using a doubly fed asynchronous generator rotor turning device of the present invention. Figure 2 ; Figure 4 This is a front view of the rotor turning bracket provided by the present invention; Figure 5 This is a top view of the rotor turning bracket provided by the present invention; Figure 6 This is a schematic diagram of the installation of the rotor turning bracket provided by the present invention; Figure 7 This is a top view of the rotor turning leg provided by the present invention; Figure 8 This is a front view of the rotor turning leg provided by the present invention; Figure 9 It is a side view of the rotor turning leg provided by the present invention; Figure 10 This is a schematic diagram of the installation of the rotor turning legs provided by the present invention Figure 1 ; Figure 11 This is a schematic diagram of the installation of the rotor turning legs provided by the present invention Figure 2 ; Figure 12 This is a front view of the hoisting sleeve provided by the present invention; Figure 13 It is a side view of the lifting sleeve provided by the present invention.

[0011] Figure numerals: 1. Rotor turning bracket; 11. Bottom plate 1; 12. Side plate 1; 13. Side plate 2; 14. Support; 15. Rib plate 1; 16. Support ear; 2. Rotor turning leg; 21. Bottom plate 2; 22. Support plate; 23. Rib plate 2; 24. Rib plate 3; 25. Rotor turning pad; 3. Connecting pin; 4. Anti-slip bolt and nut; 5. Auxiliary tooling; 51. Lifting sleeve; 52. Universal lifting ring; 53. Hook and U-shaped ring; 54. Lifting rope; 55. Crane; 56. Rotor bracket. DETAILED DESCRIPTION

[0012] To make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0013] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meanings understood by persons having ordinary skills in the field to which this application belongs. The words "a" or "an" and the like used in the patent application specification and claims of this application do not indicate a limitation on quantity, but rather indicate the presence of at least one.

[0014] The following is combined with Figure 1-13 This application is described in further detail.

[0015] The embodiment of the present application discloses a method for using a doubly-fed asynchronous generator rotor turning device.

[0016] Reference Figures 1-13 A method for using a doubly-fed asynchronous generator rotor turning device includes a rotor turning device consisting of a rotor turning bracket 1, a rotor turning leg 2, a connecting pin 3, and an anti-slip bolt and nut 4, and the rotor turning is assisted by an auxiliary tooling 5.

[0017] The rotor turning bracket 1 is fixed to the ground with reinforced pre-buried anchor bolts and is used to connect to the ground when the rotor is turned over. The rotor turning leg 2 is connected to the shaft head of the rotor driving end and enters the tank at the same time, serving as a leg for the rotor to be vertically dipped in paint, so that the rotor can stand steadily in the dipping tank. The connecting pin 3 is used to connect the rotor turning bracket 1 and the rotor turning leg 2. The anti-slip bolt nut 4 is inserted into the radial through hole at the inlet end of the pin to prevent the connecting pin 3 from falling off under unbalanced force. The auxiliary tooling 5 has a lifting sleeve 51, a universal lifting ring 52, a hook and a U-shaped ring 53, a lifting rope 54 and a crane 55. The non-driving end of the rotor is supported by the lifting sleeve 5 1Fix the non-drive end shaft head with the connecting screws, then install the universal lifting ring 52 on the lifting sleeve 51, and assemble a set of ports that can be lifted and moved by means of the lifting hook and 53 U-shaped ring U, the lifting rope 54 and the crane 55; by adjusting the crane 55, move it up and down and left and right to rotate the rotor from a horizontal state to a vertical state, and then adjust the crane 55 so that the crane 55 is not under force, the rotor can be supported on the rotor turning bracket 1 by the rotor turning legs 2. At this time, remove the anti-slip bolts and nuts 4, pull out the connecting pin 3, lift the crane 55, move the rotor away from the rotor turning bracket 1, and place it in an upright paint immersion pipe or on the ground to realize rotor turning.

[0018] Reference Figure 4-Figure 6 The rotor turning bracket 1 is composed of a bottom plate 11, a side plate 12, a side plate 2 13, a support 14, a rib plate 15 and a support ear 16, and each component of the rotor turning bracket 1 is made of steel plates through a welding process. The support 14 is welded on the bottom plate 11, and the side plates 12 and 13 are symmetrically welded with multiple and are arranged on the side of the support 14. The support ear 16 is welded on the top of the support 14 and is symmetrically arranged with two. Two coaxial through holes are respectively processed in the middle of the two support ears 16 to serve as universal rings when the rotor turning legs 2 turn over. The rib plate 15 is symmetrically welded with multiple and are arranged on the side of the two support ears 16 facing away from each other; the bottom plate 11 of the rotor turning bracket 1 is fixed with reinforced embedded anchor bolts and nuts, and then reinforced with high-strength non-shrinkage grouting material C40, which is equivalent to a universal joint with a grounded elevation, with low production cost and easy operation.

[0019] Reference Figure 7-11 The rotor turning leg 2 is composed of a bottom plate 21, a support plate 22, a rib plate 23, a rib plate 3 24 and a rotor turning pad 25. All components of the rotor turning leg 2 are made of steel plates through a welding process. Bolt holes and light holes are processed on the bottom of the rotor turning pad 25, which are mainly used to connect the rotor. First, use bolts to connect the lifting holes at the end of the rotor drive end shaft head through the light holes. The purpose is to connect the rotor turning leg 2 to the rotor drive end shaft head axially first, connect the bolts through the light holes, rotate the rotor turning leg 2, and adjust the alignment. The eight connecting screw holes and the shaft head threaded hole positions are evenly distributed at the bottom of the quasi-rotor turning pad 25, and then the hexagonal screws are used to connect and fix the rotor shaft head and the rotor turning support leg 2, so as to effectively and quickly install the screws; two coaxial through holes are processed in the center of the support plate 22, thereby forming an internal lifting ear as a universal ring, and the bottom plate 21 is welded, which acts as a support leg in this tooling, so that the rotor can be stably placed on the ground when placed upright, and the rotor can be turned over and the rotor can be stably stood and weighed.

[0020] Reference Figure 1-Figure 3 The auxiliary tooling 5 further includes a rotor bracket 56, which is used to mount the rotor.

[0021] First, the rotor turning leg 2 is assembled on the shaft head of the rotor driving end to support the rotor to stand upright on the ground. At the same time, the rotor turning leg 2 is connected to the rotor turning bracket 1 through the connecting pin 3 to realize the connection between the rotor driving end and the ground and the ability to rotate 180° in an upright state; then, through the rotation and movement port formed by the auxiliary tooling 5 at the non-driving end of the rotor, by turning on the crane 55 to move up, down, left and right, the rotor can be easily rotated and turned over and landed smoothly, thereby improving production efficiency, reducing production costs, and reducing labor intensity.

[0022] The turning steps of the method for using the doubly-fed asynchronous generator rotor turning device of the present invention are as follows: The rotor uses a rotor turning bracket 1, rotor turning legs 2, connecting pins 3, anti-slip bolts and nuts 4, and auxiliary tooling 5 to achieve rotor turning. The driving end cooperates with the rotor turning bracket 1 and the rotor turning legs 2, inserting the rotor turning bracket 1 ear 16 into the rotor turning leg 2, keeping the four holes of the two tooling coaxial, and then inserting the connecting pin 3 through the four through holes. At the same time, the connecting pin 3 end is locked with the anti-slip bolts and nuts 4 to prevent the pin from falling out, forming a fixed and 180° rotatable universal ring assembly, which can achieve weighing and fixed rotation of the rotor during the turning process; the non-driving end of the rotor is fixedly connected to the non-driving end shaft head with the help of the auxiliary tooling 5 lifting sleeve 51 through the connecting screw, and then the universal lifting ring 52 is installed on the lifting sleeve 51. A set of ports that can be raised and lowered and moved are assembled through the hook and 53 U-shaped ring U, lifting rope 54, and traveling crane 55.

[0023] Before turning over, the rotor is in a horizontal state and placed flat on the rotor bracket 56. At this time, the auxiliary tooling 5 and the rotor turning bracket 1, rotor turning legs 2, connecting pins 3, and anti-slip bolts and nuts 4 of the rotor turning device are respectively installed on the non-driving end and driving end of the rotor shaft head. After the installation is completed, check to see if it is firm.

[0024] When the rotor turns over, start the crane 55 first, raise it and move it to the right until it rotates to Figure 1 The rotor is in a vertical state. Adjust the crane 55 so that it is not under force. The rotor can be supported on the rotor turning bracket 1 through the rotor turning legs 2. At this time, remove the anti-loosening bolts and nuts 4, pull out the connecting pin 3, lift the crane 55, and move the rotor away from the rotor turning bracket 1. Place it in an upright paint immersion tube or on the ground to achieve rotor turning.

[0025] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A method for using a doubly-fed asynchronous generator rotor turning device, characterized in that: The invention relates to a rotor turning device comprising a rotor turning bracket (1), a rotor turning leg (2), a connecting pin (3), and an anti-slip bolt nut (4), and the rotor turning device is assisted by an auxiliary tool (5); the rotor turning bracket (1) is fixed to the ground by a reinforced pre-buried anchor bolt and is used to connect with the ground when the rotor turns over; the rotor turning leg (2) is connected to the shaft head of the rotor driving end and enters the tank at the same time, serving as a supporting leg when the rotor is vertically dipped in paint, so that the rotor can stand steadily in the dipping tank; the connecting pin (3) is used to connect the rotor turning bracket (1) and the rotor turning leg (2); the anti-slip bolt nut (4) is inserted into a radial through hole at the pin inlet end, and is used to prevent the connecting pin (3) from falling off under an unbalanced force state; the auxiliary tool (5) has a lifting sleeve (51), a universal lifting ring (52), and a lifting hook. The non-driving end of the rotor is fixedly connected to the non-driving end shaft head by means of the lifting sleeve (51) through the connecting screw, and then the universal lifting ring (52) is installed on the lifting sleeve (51), and a set of ports that can be lifted and moved are assembled through the hook and the U-shaped ring (53), the lifting rope (54) and the crane (55); by adjusting the crane (55), the rotor is rotated from a horizontal state to a vertical state by moving up and down and left and right, and then the crane (55) is adjusted so that the crane is not subjected to force, and the rotor can be supported on the rotor turning bracket (1) by the rotor turning legs (2). At this time, the anti-slip bolts and nuts (4) are removed, the connecting pin (3) is pulled out, and the crane (55) is lifted to move the rotor away from the rotor turning bracket (1) and place it in a vertical paint-immersed pipe or on the ground to achieve rotor turning.

2. The method for using the doubly-fed asynchronous generator rotor turning device according to claim 1, characterized in that: The rotor turning bracket (1) is composed of a bottom plate (11), a side plate (12), a side plate (13), a support (14), a rib plate (15) and a lug (16), and each component of the rotor turning bracket (1) is made of steel plates through a welding process. The support (14) is welded on the bottom plate (11), and the side plate (12) and the side plate (13) are symmetrically welded with multiple ribs and are arranged around the support (14). The lug (16) is welded on the top of the support (14). , and two are symmetrically arranged, two coaxial through holes are respectively processed in the middle of the two ears (16) to serve as universal rings when the rotor turning legs (2) turn over, and the rib plate (15) is symmetrically arranged with multiple and respectively arranged on the side away from each other of the two ears (16); the bottom plate (11) of the rotor turning bracket (1) is fixed with reinforced pre-buried anchor bolts and nuts, and then reinforced with high-strength non-shrinkage grouting material C40, which is equivalent to a universal joint with grounding and elevation, with low production cost and easy operation.

3. The method for using the doubly-fed asynchronous generator rotor turning device according to claim 1, characterized in that: The rotor turning leg (2) is composed of a second bottom plate (21), a support plate (22), a second rib plate (23), a third rib plate (24) and a rotor turning pad (25), and each component of the rotor turning leg (2) is made of steel plates through a welding process. The bottom of the rotor turning pad (25) is processed with bolt holes and light holes, which are mainly connected to the rotor; first, the rotor driving end shaft head end hoisting hole is connected with a bolt through the light hole, so that the rotor turning leg (2) and the rotor driving end shaft head are axially connected first, and the bolt is connected through the light hole, and the rotor turning leg ( 2), adjust and align the eight connecting screw holes and the shaft head threaded hole positions evenly distributed on the bottom of the rotor turning pad (25), and then use the hexagon socket screw to connect and fix the rotor shaft head and the rotor turning support leg (2) to effectively and quickly install the screws; the center of the support plate (22) is processed with two coaxial through holes, thereby forming an internal hanging ear as a universal ring, and the bottom plate (21) is welded, which acts as a support leg in this tooling, so that the rotor can be stably placed on the ground when placed upright, and the rotor can be turned over and the rotor can be stably stood and weighed.

4. The method for using the doubly-fed asynchronous generator rotor turning device according to claim 1, characterized in that: The auxiliary tooling further comprises a rotor bracket (56), and the rotor bracket (56) is used for mounting the rotor.

5. A method for using a doubly-fed asynchronous generator rotor turning device according to any one of claims 1 to 4, characterized in that: First, the rotor turning leg (2) is assembled on the shaft head of the rotor driving end to support the rotor to stand upright on the ground. At the same time, the rotor turning leg (2) is connected to the rotor turning bracket (1) through the connecting pin (3), so that the rotor driving end is connected to the ground and can rotate 180 degrees in an upright state. Then, through the rotation and movement port formed at the non-driving end of the rotor by the auxiliary tooling (5), by turning on the crane (55) to move up, down, left and right, the rotor can be easily rotated and turned over and landed smoothly, thereby improving production efficiency, reducing production costs, and reducing labor intensity.

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