Tool and method for checking and replacing sliding yaw upper liner of wind generating set

Abstract

The invention discloses a tool and a method for checking and replacing a sliding yaw upper liner of a wind generating set, solves the problem that the liner is difficult to take out in the mode that a lifting jack is placed in a main machine frame groove in the prior art, and has the beneficial effects that the structure is simple, and the liner is convenient to check and replace. According to the specific scheme, the tool for checking and replacing the sliding yaw upper liner of the wind generating set comprises a supporting component, the supporting component can penetrate through the end of a wind power tower drum to be connected with a yaw gear ring, the supporting component can further abut against the inner side wall of the wind power tower drum, and the supporting component supports a first lifting assembly; the top of the first lifting assembly makes contact with the yaw brake, and the first lifting assembly upwards jacks the yaw brake and the main rack through the fit clearance between the yaw brake and the yaw gear ring, so that the gasket located between the yaw gear ring and the main rack can be exposed.

Description

Technical Field

[0001] The invention relates to the field of wind power tower maintenance, in particular to a tool and method for inspecting and replacing a liner on a sliding yaw of a wind power generator set. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] In a wind turbine, the sliding yaw system is a key system for the wind turbine to achieve maximum power generation under existing wind conditions. It can ensure that the impeller of the wind turbine is always facing the wind, so that wind energy can be used with maximum efficiency and power generation efficiency can be improved. When the wind turbine is operating normally, the unit needs to automatically yaw to the wind, but often during the yaw process, the wind turbine will be accompanied by a loud and harsh noise due to the reduction of oil. This yaw noise may not only have a certain impact on the safe operation of the wind turbine, but also seriously interfere with the lives of residents near the wind farm.

[0004] After the yaw abnormal noise occurs, the inspection or replacement of the upper liner of the sliding yaw should be completed as soon as possible. In the existing technology, two 150t ultra-thin jacks are mostly used to put into the main frame slot, and the main frame is lifted by the jack to take out the liner to complete the inspection or replacement of the liner. After the wind rotor is installed on the unit, the center of gravity of the unit is 1 to 2 meters to the right of the tower centerline, and the weight on the wind rotor side is heavier. The ultra-thin jack has the problem of not being able to take out the liner, and the upper liner cannot be inspected or replaced in time. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a tool for inspecting and replacing the sliding yaw upper pad of a wind turbine generator set, which solves the problem of difficulty in removing or replacing the upper pad on the wind rotor side on the tower.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] A tool for inspecting and replacing a pad on a sliding yaw of a wind turbine generator set comprises a supporting member, wherein the supporting member can pass through the end of a wind turbine tower and be connected to a yaw gear ring, and the supporting member can also abut against an inner wall of the wind turbine tower, wherein the supporting member supports a first lifting assembly, wherein the top of the first lifting assembly contacts with a yaw brake, and utilizing the matching clearance between the yaw brake and the yaw gear ring, the first lifting assembly lifts the yaw brake and the main frame upward, so that the pad between the yaw gear ring and the main frame can be exposed.

[0008] The tooling for inspecting and replacing the sliding yaw pad of a wind turbine generator set as described above further includes a second lifting assembly, which can be arranged in a slot of the main frame, and cooperates with the first lifting assembly to lift the main frame.

[0009] In the above-mentioned tooling for inspection and replacement of the upper liner of the sliding yaw of a wind turbine generator set, the first lifting assembly and the second lifting assembly are both jacks, and the jacks are connected to the hydraulic pump;

[0010] The first lifting assembly and the second lifting assembly are both connected to the controller.

[0011] In the tooling for inspecting and replacing the sliding yaw pad of a wind turbine generator set as described above, the lifting end of the first lifting assembly supports a perforated pad, and the perforated pad can bypass the bolts connecting the yaw brake and the main frame to avoid damage to the bolts.

[0012] The tooling for inspection and replacement of the sliding yaw upper pad of a wind turbine generator set as described above, wherein the support member is connected to the yaw gear ring by using the connection hole between the end of the wind turbine tower and the yaw gear ring;

[0013] The supporting member comprises a supporting block, a fastener is arranged on the supporting block, the fastener can pass through the end of the wind power tower and be connected with the yaw gear ring, and the supporting block is provided with the first lifting assembly on one side of the fastener.

[0014] The tooling for inspection and replacement of the upper liner of the wind turbine sliding yaw as described above, wherein the support member further comprises a tower pressure plate, the tower pressure plate is connected to the support block, the tower pressure plate is located on the side of the support block away from the first lifting assembly, and the tower pressure plate can fit with the inner wall of the wind turbine tower;

[0015] A flexible protective plate is provided on the side of the tower pressure plate that is in contact with the inner wall of the wind turbine tower, so as to achieve perfect contact between the tower pressure plate and the inner wall of the wind turbine tower, ensure the normal support and stress of the wind turbine tower, and ensure that the stress of the wind turbine tower is within the yield strength.

[0016] The tooling for inspection and replacement of the upper liner of the wind turbine generator set sliding yaw as described above, wherein the tower pressure plate is connected to the support block via a connecting piece, the tower pressure plate and the connecting piece are connected via an adjusting piece, and the tower pressure plate and the inner wall of the wind turbine tower are closely fitted by the movement of the adjusting piece relative to the connecting piece;

[0017] A protruding block is arranged on the side of the connecting piece, and a tightening bolt passes through the protruding block to be connected with the tower pressure plate. The tightening bolt cooperates with the tower pressure plate through a threaded structure, and a fastening nut is arranged on the side of the tightening bolt close to the tower pressure plate.

[0018] The tooling for inspection and replacement of the upper liner of the wind turbine sliding yaw as described above, wherein the tower pressing plate is located below the fastener, and a distance is set between the tower pressing plate and the head of the fastener;

[0019] The fasteners are multiple fastening bolts, and the fastening bolts are arranged through the support block via a threaded structure.

[0020] In the tooling for inspecting and replacing the upper liner of the sliding yaw of a wind turbine generator set as described above, a lifting ring is provided at the supporting member to lift the supporting member.

[0021] In a second aspect, the present invention further provides a method for inspecting and replacing a wind turbine generator set sliding yaw upper pad, using the tooling for inspecting and replacing a wind turbine generator set sliding yaw upper pad, including the following contents:

[0022] Remove the connecting bolts between the end of the wind turbine tower and the yaw gear ring to expose the connecting hole between the end of the wind turbine tower and the yaw gear ring;

[0023] The support member is connected to the yaw gear ring by using the connection hole between the end of the wind turbine tower and the yaw gear ring, and the support member abuts against the inner wall of the wind turbine tower to maintain the stability of the support member arrangement;

[0024] Remove the caliper of the yaw brake;

[0025] The support member supports the first lifting assembly, and the yaw brake and the main frame are lifted upward by the first lifting assembly, so that the main frame moves upward to expose the pad between the yaw gear ring and the main frame;

[0026] Repair or replace the gasket between the yaw gear ring and the main frame.

[0027] The beneficial effects of the present invention are as follows:

[0028] 1) In the present invention, the tooling is provided with a supporting member, which can be connected to the yaw gear ring and can also abut against the inner wall of the wind turbine tower to ensure the stable setting of the supporting member. The supporting member supports the first lifting assembly, and the first lifting assembly lifts the yaw brake and the main frame upward by utilizing the matching clearance between the yaw gear ring and the yaw gear ring, so that the gasket located between the yaw gear ring and the main frame can be exposed. The structural setting is simple, and the gasket on the upper side of the yaw gear ring can be inspected or replaced, which solves the problem of abnormal yaw noise caused by the yaw gasket of the wind farm being out of place or the reduction of grease.

[0029] 2) The present invention is also provided with a second lifting assembly, which can be placed in the notch of the main frame. The second lifting assembly cooperates with the first lifting assembly to lift the main frame together, which is conducive to the rapid and effective lifting of the main frame.

[0030] 3) The present invention as a whole can realize the inspection and replacement of various upper side gaskets of yaw gear rings, with low replacement cost, while reducing power generation loss, greatly saving the company's costs. The whole is easy to process, light in weight, and easy to install and use.

[0031] 4) The overall structure of the tooling of the present invention is reasonably set up. The fastener is supported by the support block to be connected to the yaw gear ring. The support block also supports the first lifting assembly. The support block is connected to the tower pressure plate through a connecting piece. An adjusting piece is set between the connecting piece and the tower pressure plate. In this way, not only can the tower pressure plate effectively fit the inner wall of the wind turbine tower, but also it can cooperate with wind turbine towers of different models; the spacing distance between the tower pressure plate and the fastener is set to reduce the overall design weight while ensuring that there is enough construction space for the hydraulic wrench when installing the fastener.

[0032] 5) The method provided by the present invention utilizes the connection hole between the end of the wind turbine tower and the yaw gear ring to install the support member, the support member abuts against the inner wall of the wind turbine tower to ensure the stability of the support member arrangement, the support member supports the first lifting assembly, and the yaw brake and the main frame are lifted upward through the first lifting assembly, so that the main frame moves upward to expose the gasket between the yaw gear ring and the main frame, so that the exposed gasket can be inspected or replaced, which greatly reduces the difficulty of repairing the gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0034] Figure 1 It is a schematic diagram of a tool for inspecting and replacing a pad on a sliding yaw of a wind turbine generator set according to one or more embodiments of the present invention.

[0035] Figure 2 The present invention is a schematic diagram of the use status of a tool for inspecting and replacing a pad on a sliding yaw of a wind turbine generator set according to one or more embodiments of the present invention.

[0036] Figure 3 The present invention is a schematic diagram of the use status of a tool for inspecting and replacing a pad on a sliding yaw of a wind turbine generator set according to one or more embodiments of the present invention.

[0037] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0038] Wherein: 1-1. Fastening bolts, 1-2. Pad with holes, 1-3. Adjustment plate, 1-4. First lifting assembly, 1-5. Reinforcement plate, 1-6. Support block, 1-7. Tower plate, 1-8. Rubber protective plate, 1-9. Tightening bolts, 1-10. Lifting ring, 1-11. Connecting plate, 1-12. Protruding block, 1-13. Fastening nut;

[0039] 2-1. Wind turbine tower, 2-2. Yaw brake, 2-3. Tooling for inspection and replacement of pads, 2-4. Main frame, 2-5. Pads, 2-6. Yaw gear ring, 2-7. Notch. DETAILED DESCRIPTION

[0040] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0042] As introduced in the background technology, the prior art method of placing a lifting jack in a main frame slot has the problem of difficulty in removing the gasket. In order to solve the above technical problem, the present invention proposes a tool for inspecting and replacing the gasket on the sliding yaw of a wind turbine generator set.

[0043] Embodiment 1

[0044] In a typical embodiment of the present invention, reference is made to Figure 1 As shown, a tool for inspecting and replacing the sliding yaw upper pad of a wind turbine generator set includes a supporting member, which can pass through the end of the wind turbine tower and connect with the yaw gear ring 2-6. The supporting member can also abut against the inner wall of the wind turbine tower 2-1. The supporting member supports the first lifting component 1-4, and the top of the first lifting component contacts with the yaw brake 2-2. By utilizing the matching clearance between the yaw brake 2-2 and the yaw gear ring 2-6, the first lifting component lifts the yaw brake 2-2 and the main frame 2-4 upward, so that the pad located between the yaw gear ring and the main frame 2-4 can be exposed.

[0045] In addition, the tooling also includes a second lifting assembly, which can be set in the slot 2-7 of the main frame, and the second lifting assembly cooperates with the first lifting assembly 1-4 to lift the main frame.

[0046] Specifically, the first lifting assembly 1-4 and the second lifting assembly are both jacks, which are connected to the hydraulic pump; the first lifting assembly and the second lifting assembly are both connected to the controller, which is a PLC controller or other types of controllers, the hydraulic pump is placed at the supporting structure, and the controller is also arranged at the supporting structure.

[0047] It should be explained that, because the slot of the main frame 2-4 is narrow, a thinner hydraulic jack is set, and the second lifting assembly assists the first lifting assembly to lift the main frame; Figure 3 As shown, the second lifting assembly can be set at two locations, one of which is close to the first lifting assembly, and the other is at a set distance from the first lifting assembly, that is, the two second lifting assemblies are respectively located in two adjacent slots 2-7, and the interval between the two adjacent second lifting assemblies is set, and the telescopic end of the second lifting assembly is in contact with the main frame 2-4.

[0048] In addition, in order to avoid damage to the bolts connecting the yaw brake 2-2 and the main frame 2-4 during the jacking process, the jacking end of the first lifting assembly is connected to the adjustment plate 1-3, and the adjustment plate 1-3 supports the perforated pad 1-2. The perforated pad 1-2 is provided with an opening, and the size of the opening is larger than the outer diameter of the bolts connecting the yaw brake 2-2 and the main frame 2-4. In this way, the perforated pad 1-2 can bypass the bolts connecting the yaw brake 2-2 and the main frame to avoid damaging the strength of the bolts. In this way, during the jacking process, the perforated pad 1-2 directly contacts the yaw brake 2-2, and the main frame 2-4 is lifted through the yaw brake 2-2.

[0049] In this embodiment, the support member is connected to the yaw gear ring by using the connection hole between the end of the wind turbine tower and the yaw gear ring, so as to fix the position of the support member;

[0050] Specifically, the support member includes a support block 1-6, the support block 1-6 has a set thickness, a reinforcing plate 1-5 can be placed on the upper surface of the support block 1-6 to enhance the strength of the support block 1-6, the support block 1-6 is provided with a fastener, the fastener is specifically a plurality of fastening bolts 1-1, the support block is provided with a threaded hole, the fastening bolt 1-1 is set through the threaded hole, a U-shaped opening is provided on the side of the reinforcing plate 1-5, and the setting position of the U-shaped opening and the threaded hole of the support block are one-to-one corresponding, so that after the support member is installed, the reinforcing plate 1-5 can be smoothly set above the support block 1-6, the head of the fastening bolt is located below the support block 1-6, the fastening bolt 1-1 can pass through the end of the wind turbine tower and connect with the yaw gear ring 2-6, and the support block is provided with a first lifting assembly 1-4 on one side of the fastener, and the first lifting assembly 1-4 and the fastening bolt 1-1 are set at a distance.

[0051] Moreover, the support block 1-6 is provided with a lifting ring 1-10 for lifting the support member, and the lifting ring 1-10 can be provided at two locations, and the lifting ring 1-10 is exposed from the surface of the reinforcing plate 1-5.

[0052] It should be noted that the supporting structure also includes a tower pressure plate 1-7, which is connected to the lower side of the support block 1-6. The tower pressure plate 1-7 is located on the side of the support block 1-6 away from the first lifting assembly 1-4. A flexible protective plate is fixed on the side of the tower pressure plate 1-7 facing the inner wall of the wind turbine tower 2-1. Specifically, a rubber protective plate 1-8 is used to increase the force-bearing area while avoiding damage to the inner wall of the wind turbine tower 2-1. The shape of the tower pressure plate 1-7 can be adapted to the inner wall of the wind turbine tower. The setting of the rubber protective plate 1-8 makes the tower pressure plate 1-7 effectively fit the inner wall of the wind turbine tower.

[0053] In this embodiment, the lower side of the tower pressing plate 1-7 is connected to the support block 1-6 through a connecting piece, and the tower pressing plate 1-7 is connected to the connecting piece through an adjusting piece. The connecting piece is specifically a connecting plate 1-11, and the connecting plate is an L-shaped piece or an oblique piece. One end of the connecting plate 1-11 is connected to the lower side of the support block, and the other end of the connecting plate 1-11 is connected to the tower pressing plate 1-7 through an adjusting piece. The tower pressing plate 1-7 is tightly fitted to the inner wall of the wind turbine tower by moving the adjusting piece relative to the connecting piece.

[0054] Specifically, two connecting plates 1-11 are provided, and the two connecting plates 1-11 are spaced apart from each other. Protruding blocks 1-12 are respectively provided on both sides of the connecting plates, and the middle of the two connecting plates are connected to the same protruding block 1-12. A tightening bolt 1-9 passes through the protruding block 1-12 and is connected to the tower pressure plate 1-7. The tightening bolt 1-9 cooperates with the tower pressure plate through a threaded structure. A fastening nut 1-13 is provided on the side of the tightening bolt close to the tower pressure plate 1-7. The tightening bolt 1-9 is adjusted relative to the protruding block so that the tower pressure plate 1-7 can fit tightly against the inner wall of the wind turbine tower. After fitting, the fastening nut 1-13 is locked relative to the tightening bolt 1-9.

[0055] It is easy to understand that the tower platen 1-7 is located below the fastener, and the tower platen 1-7 is spaced apart from the head of the fastener;

[0056] Among them, the support block is made of welded steel plates, and the reinforcement plate strengthens the overall structure while reducing the weight of the module;

[0057] The tooling provided in the present embodiment is provided with a supporting member, which can be connected to the yaw gear ring and can also abut against the inner wall of the wind turbine tower to ensure the stable setting of the supporting member. The supporting member supports the first lifting assembly, and the first lifting assembly lifts the yaw brake and the main frame upward by utilizing the matching clearance between the yaw gear ring and the yaw gear ring, so that the gasket located between the yaw gear ring and the main frame can be exposed. The structural setting is simple, and the gasket on the upper side of the yaw gear ring can be inspected or replaced, which solves the problem of abnormal yaw noise caused by the yaw gasket of the wind farm being out of place or the reduction of grease.

[0058] Embodiment 2

[0059] This embodiment provides a method for inspecting and replacing the upper liner of a wind turbine generator set. Figure 2 As shown, the tool 2-3 for inspecting and replacing the upper liner of the sliding yaw of a wind turbine generator set described in the first embodiment is used, and includes the following contents:

[0060] Remove the connecting bolts between the wind turbine tower end and the yaw gear ring 2-6 to expose the connecting hole between the wind turbine tower end and the yaw gear ring;

[0061] Place the tool 2-3 for checking and replacing the gasket under the yaw brake 2-2. The fastening bolt 1-1 in the support member uses the connection hole between the end of the wind turbine tower 2-1 and the yaw gear ring 2-6, that is, passes through the end of the wind turbine tower to connect with the yaw gear ring 2-6. Adjust the fastening nut 1-13 relative to the protruding block 1-12, so that the tower pressure plate 1-7 at the support member is tightly fitted with the inner wall of the wind turbine tower (that is, it is against the inner wall of the wind turbine tower), so as to maintain the stability of the support member setting;

[0062] Remove the upper caliper and the lower caliper of the yaw brake 2-2;

[0063] Select a jack of appropriate tonnage, i.e., the second lifting assembly, and place it in the slot of the main frame 2-4;

[0064] The supporting member supports the first lifting assembly 1-4, and lifts the yaw brake 2-2 and the main frame 2-4 upward through the first lifting assembly, so that the main frame moves upward to expose the pad 2-5 between the yaw gear ring 2-6 and the main frame 2-4;

[0065] Repair or replace the gasket between the yaw gear ring 2-6 and the main frame 2-4;

[0066] After the inspection or replacement is completed, the supporting structure is removed. After the removal is completed, the connecting bolts between the end of the wind turbine tower and the yaw gear ring are reset.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tool for inspecting and replacing the upper pad of a wind turbine generator set, characterized in that: The invention comprises a supporting member, which can pass through the end of the wind turbine tower and be connected with the yaw gear ring. The supporting member can also abut against the inner wall of the wind turbine tower. The supporting member supports the first lifting assembly. The top of the first lifting assembly contacts with the yaw brake. By utilizing the matching clearance between the yaw brake and the yaw gear ring, the first lifting assembly lifts the yaw brake and the main frame upward, so that the pad between the yaw gear ring and the main frame can be exposed.

2. The tool for inspecting and replacing the upper liner of the wind turbine according to claim 1, characterized in that: It also includes a second lifting component, which can be set in the slot of the main frame, and the second lifting component cooperates with the first lifting component to lift the main frame.

3. A tool for inspection and replacement of the upper liner of the wind turbine according to claim 2, characterized in that: The first lifting assembly and the second lifting assembly are both jacks, and the jacks are connected to the hydraulic pump; The first lifting assembly and the second lifting assembly are both connected to the controller.

4. The tool for inspecting and replacing the upper liner of the wind turbine according to claim 1, characterized in that: The lifting end of the first lifting assembly supports a pad with holes, and the pad with holes can bypass the bolts connecting the yaw brake and the main frame.

5. The tool for inspecting and replacing the upper liner of the sliding yaw of a wind turbine generator set according to claim 1, characterized in that: The support member is connected to the yaw gear ring by using the connection hole between the end of the wind turbine tower and the yaw gear ring; The supporting member comprises a supporting block, a fastener is arranged on the supporting block, the fastener can pass through the end of the wind power tower and be connected with the yaw gear ring, and the supporting block is provided with the first lifting assembly on one side of the fastener.

6. The tool for inspecting and replacing the upper liner of the wind turbine according to claim 5, characterized in that: The support member also includes a tower pressure plate, which is connected to the support block, and is located on a side of the support block away from the first lifting assembly, and the tower pressure plate can fit the inner wall of the wind turbine tower; A flexible protective plate is provided on the side of the tower pressure plate that is in contact with the inner wall of the wind turbine tower, so as to achieve perfect contact between the tower pressure plate and the inner wall of the wind turbine tower, ensure the normal support and stress of the wind turbine tower, and ensure that the stress of the wind turbine tower is within the yield strength.

7. The tool for inspecting and replacing the upper liner of the wind turbine according to claim 6, characterized in that: The tower pressing plate is connected to the support block through a connecting piece, and the tower pressing plate and the connecting piece are connected through an adjusting piece, and the tower pressing plate is closely fitted to the inner wall of the wind turbine tower by the movement of the adjusting piece relative to the connecting piece; A protruding block is arranged on the side of the connecting piece, and a tightening bolt passes through the protruding block to be connected with the tower pressure plate. The tightening bolt cooperates with the tower pressure plate through a threaded structure, and a fastening nut is arranged on the side of the tightening bolt close to the tower pressure plate.

8. The tool for inspecting and replacing the upper liner of the wind turbine according to claim 6, characterized in that: The tower pressing plate is located below the fastener, and a distance is set between the tower pressing plate and the head of the fastener; The fasteners are multiple fastening bolts, and the fastening bolts are arranged through the support block via a threaded structure.

9. The tool for inspecting and replacing the upper liner of the sliding yaw of a wind turbine generator set according to claim 1, characterized in that: A lifting ring is arranged at the supporting member to lift the supporting member.

10. A method for inspecting and replacing the upper pad of a wind turbine generator set sliding yaw, characterized in that: A tool for inspecting and replacing the upper liner of a wind turbine generator set sliding yaw according to any one of claims 1 to 9, comprising the following contents: Remove the connecting bolts between the end of the wind turbine tower and the yaw gear ring to expose the connecting hole between the end of the wind turbine tower and the yaw gear ring; The support member is connected to the yaw gear ring by using the connection hole between the end of the wind turbine tower and the yaw gear ring, and the support member abuts against the inner wall of the wind turbine tower to maintain the stability of the support member arrangement; Remove the caliper of the yaw brake; The support member supports the first lifting assembly, and the yaw brake and the main frame are lifted upward by the first lifting assembly, so that the main frame moves upward to expose the pad between the yaw gear ring and the main frame; Repair or replace the gasket between the yaw gear ring and the main frame.

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