Nacelle and wind turbine generator

Abstract

The utility model discloses a machine cabin cover and wind driven generator unit relates to wind power generation technical field. Machine cabin cover includes cover body, sliding cover, support platform, drive component and lifting hook. Among them, the cover body includes the front end and rear end, and the top is provided with the hoisting mouth, and the both sides of hoisting mouth are provided with the limiting slot, and the direction from the front end to the rear end is the first direction, the both sides of sliding cover are accommodated in two limiting slots respectively, and sliding cover can slide along the first direction, the inner wall surface of support platform is connected with cover body, and support platform is equipped with the mouth, and along the vertical direction, the projection of mouth and hoisting mouth on any horizontal plane is coincident, drive component includes drive piece, drive wheel and rack, and the rack is installed in the bottom of sliding cover along the first direction, and drive piece is installed in one end of support platform close to the rear end, and drive wheel is installed on the output shaft of drive piece and is engaged with the rack, and the lifting hook is installed on the top surface of sliding cover. The scheme can realize the quick hoisting of cabin equipment, and improves the maintenance efficiency of cabin equipment.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and in particular to a nacelle cover and a wind turbine generator set. Background Technology

[0002] For some small and medium-sized wind turbine generators, the nacelle is usually installed as a whole. After the nacelle is installed on the tower, the other equipment of the wind turbine generator is hoisted into the nacelle. When the equipment inside the nacelle needs to be repaired or replaced, the nacelle must first be completely removed and hoisted to a designated location. Then, a crane is used to lift the equipment to the ground. This process is complicated, and the removal of the nacelle requires workers to operate at heights, which significantly reduces work efficiency while ensuring safety.

[0003] In view of this, the present invention proposes a nacelle cover and a wind turbine generator set to solve or at least alleviate the above problems. Utility Model Content

[0004] The main purpose of this utility model is to propose a nacelle cover and a wind turbine generator set, which aims to solve the problem of complex and inefficient operation procedures when repairing or replacing equipment inside the nacelle.

[0005] To achieve the above objectives, this utility model proposes a cabin cover, comprising:

[0006] The cover includes a front end and a rear end, and the top of the cover has a hoisting opening. Limiting grooves are provided on both sides of the hoisting opening. The direction from the front end to the rear end is defined as the first direction.

[0007] A sliding cover, wherein the two sides of the sliding cover are respectively accommodated in the two limiting grooves, and the sliding cover can slide along the first direction;

[0008] A support platform is connected to the inner wall of the cover. The support platform has a clearance opening, which coincides with the projection of the hoisting opening onto any horizontal plane in the vertical direction.

[0009] A drive assembly includes a drive member, a drive wheel, and a rack. The rack is mounted on the bottom surface of the sliding cover along the first direction. The drive member is mounted on one end of the support platform near the rear end. The drive wheel is mounted on the output shaft of the drive member and meshes with the rack.

[0010] A hook is installed on the top surface of the sliding cover.

[0011] In one embodiment, the cabin cover further includes a sliding assembly, wherein a plurality of sliding assemblies are arranged along the first direction, and the sliding assembly includes rollers that roll in cooperation with the bottom of the cover.

[0012] In one embodiment, the plurality of sliding components arranged along the first direction are defined as a support group;

[0013] The nacelle canopy includes two support groups, and the sliding cover includes a symmetrical plane along the vertical direction and parallel to the first direction, with the two support groups symmetrically arranged along the symmetrical plane.

[0014] In one embodiment, the sliding assembly further includes a support and a base, the base being mounted on the side of the support platform facing the sliding cover, the support being mounted on the side of the base facing the sliding cover, and the roller being rotatably mounted on the support.

[0015] In one embodiment, the sliding assembly further includes an auxiliary stabilizing kit comprising two hinge seats and a pull rod, one of the hinge seats being mounted on the side of the base facing the sliding cover, the other hinge seat being mounted on the cover, and the two ends of the pull rod being hinged to the two hinge seats respectively.

[0016] In one embodiment, each of the sliding components includes two sets of the auxiliary stabilizing kits spaced apart.

[0017] In one embodiment, along the first direction, the sliding cover has a protrusion at one end near the front end, the cover body includes a top plate, the top plate has the hoisting opening, and the top surface of the protrusion is in contact with the bottom surface of the top plate.

[0018] In one embodiment, the top surface of the protrusion is coated with a waterproof coating.

[0019] In one embodiment, the cabin cover further includes a locking assembly, which includes a lifting member and a pin. The protrusion has a through hole, and the bottom of the top plate has a blind hole. The lifting member is used to drive the pin through the through hole and the blind hole.

[0020] This utility model also proposes a wind turbine generator set, including a nacelle cover as described in any of the above embodiments, and further including a main bearing, a gearbox and a generator arranged sequentially inside the cover along the first direction.

[0021] According to the technical solution provided by this utility model, the cabin canopy includes a canopy body, a sliding cover, a support platform, a drive assembly, and a hook. The canopy body includes a front end and a rear end, and a lifting opening is provided on the top of the canopy body. Limiting grooves are provided on both sides of the lifting opening. The direction from the front end to the rear end is defined as the first direction. The two sides of the sliding cover are respectively accommodated in the two limiting grooves, and the sliding cover can slide along the first direction. The support platform is connected to the inner wall of the canopy body, and the support platform has a clearance opening. In the vertical direction, the clearance opening coincides with the projection of the lifting opening onto any horizontal plane. The drive assembly includes a drive component, a drive wheel, and a rack. The rack is installed on the bottom surface of the sliding cover along the first direction. The drive component is installed at one end of the support platform near the rear end. The drive wheel is installed on the output shaft of the drive component, and the drive wheel meshes with the rack. The hook is installed on the top surface of the sliding cover. With this setup, when it is necessary to repair or replace the equipment inside the cabin, it is only necessary to use a crane to connect the hook and start the drive unit to drive the sliding cover to slide in the first direction to open the lifting port. Then, another crane can be used to lift the equipment inside the cabin out from the clearance port and the lifting port. This process does not require the entire cabin cover to be removed, reducing the number of procedures for hoisting operations. At the same time, it avoids the situation where operators are working at heights outside the cabin cover, thereby improving the efficiency of the equipment hoisting process. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of an embodiment of the nacelle canopy provided by this utility model;

[0024] Figure 2 for Figure 1 A top-view structural diagram;

[0025] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of section AA;

[0026] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure of section BB in the middle;

[0027] Figure 5 for Figure 3 Enlarged structural diagram at point C;

[0028] Figure 6 for Figure 4 A magnified structural diagram at point D.

[0029] Explanation of icon numbers:

[0030] 100. Cabin canopy;

[0031] 1. Cover body; 11. Top plate; 12. Front end; 13. Rear end;

[0032] 2. Sliding cover; 21. Protrusion;

[0033] 3. Supporting platform;

[0034] 4. Drive assembly; 41. Drive component; 42. Drive wheel; 43. Rack; 44. Support bearing;

[0035] 5. Hook;

[0036] 6. Sliding assembly; 61. Roller; 62. Support; 63. Base; 64. Auxiliary stabilizing kit; 641. Hinge seat; 642. Tie rod;

[0037] 200. Main bearing; 300. Gearbox; 400. Generator;

[0038] X, the first direction; Y, the vertical direction.

[0039] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0042] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0043] In the construction and operation and maintenance of small and medium-sized wind power projects, the installation method of the nacelle directly affects the convenience of subsequent equipment maintenance. Currently, some small and medium-sized wind turbine generators adopt an integrated nacelle design. The installation process is usually as follows: first, the prefabricated nacelle is hoisted to the top of the tower and fixed. After the nacelle is securely connected to the tower, the core components such as the generator, gearbox, and so on are then hoisted into the nacelle for assembly. This installation mode has the advantages of concentrated procedures and short construction period in the initial construction phase, and is especially suitable for areas with complex terrain or limited construction windows.

[0044] However, the applicant's research revealed that due to the lack of an independent maintenance access after the nacelle enclosure and internal equipment form a closed space, when equipment reaches its maintenance cycle or malfunctions, maintenance preparation must be completed through reverse operations, which poses a potential efficiency risk for subsequent maintenance work. When large equipment such as generators and gearboxes need to be replaced or undergo deep maintenance, the entire nacelle enclosure must first be removed and hoisted to a designated area on the ground using a crane. This process requires collaboration between professional signalmen and personnel working inside the tower, and continuous monitoring of wind speed changes is necessary to ensure hoisting safety. After the nacelle enclosure is removed, maintenance personnel must enter the nacelle through a temporary maintenance platform and use specialized lifting equipment to disassemble and hoist the equipment to be repaired in stages to the ground. The entire maintenance process involves multiple procedures, including high-altitude operations, heavy equipment hoisting, and disassembly of precision components. Each procedure must strictly adhere to safety regulations, including setting up double fall protection, limiting the number of personnel, and controlling the weight of each hoisting operation. According to on-site measurement data, under the premise of strictly implementing safety standards, the average time for a single equipment replacement operation increases by more than 60% compared to the ideal state, and more manpower and mechanical resources are required. This poses a severe challenge to the operation and maintenance cost control of wind farms in remote areas.

[0045] Therefore, this utility model proposes a cabin cover to solve the above problems.

[0046] Please see Figures 1 to 4 In one embodiment of this utility model, the cabin cover 100 includes a cover body 1, a sliding cover 2, a support platform 3, a drive assembly 4, and a hook 5. The cover body 1 includes a front end 12 and a rear end 13, and a lifting port is provided on the top of the cover body 1. Limiting grooves are provided on both sides of the lifting port. The direction from the front end 12 to the rear end 13 is defined as the first direction X. The two sides of the sliding cover 2 are respectively accommodated in the two limiting grooves, and the sliding cover 2 can slide along the first direction X. The support platform 3 is connected to the inner wall of the cover body 1. The support platform 3 has a clearance opening. Along the vertical direction Y, the clearance opening and the projection of the lifting port onto any horizontal plane coincide. The drive assembly 4 includes a drive member 41, a drive wheel 42, and a rack 43. The rack 43 is installed on the bottom surface of the sliding cover 2 along the first direction X. The drive member 41 is installed on the end of the support platform 3 near the rear end 13. The drive wheel 42 is installed on the output shaft of the drive member 41, and the drive wheel 42 meshes with the rack 43. The hook 5 is installed on the top surface of the sliding cover 2.

[0047] Specifically, the vertical direction Y is Figure 3 The direction indicated by the middle arrow Y is the first direction X. Figure 2 The direction indicated by the middle arrow X. The front end 12 of the cover 1 is the end of the cover 1 closest to the blades of the wind turbine generator, and the rear end 13 is set opposite to the front end 12. Limiting grooves are formed on the side walls on both sides of the hoisting port, and limiting protrusions are formed on both sides of the sliding cover 2. The limiting protrusions are accommodated in the limiting grooves to limit the sliding direction of the sliding cover 2. The support platform 3 is bolted to the cover 1 or integrally formed. Due to the opening for clearance, the top view shape of the support platform 3 is "U" shaped, and the equipment inside the cabin can be taken out of the cabin by passing through the clearance opening and the hoisting port one after the other. The drive unit 41 is a motor. The drive unit 41 is installed on the support platform 3 near the rear end 13. The drive unit 41 can drive the drive wheel 42 to rotate clockwise or counterclockwise, so that the sliding cover 2 can reciprocate along the first direction X. The drive assembly 4 also includes a support bearing 44, which mounts the support platform 3 and is positioned between the drive wheel 42 and the drive component 41. This allows the output shaft of the drive component 41 to rotate through the support bearing 44, thereby improving the rotational stability of the drive wheel 42. The hook 5 is used to cooperate with an external crane to stabilize the sliding cover 2 and prevent it from bending.

[0048] With the technical solution of this embodiment, when it is necessary to repair or replace the equipment in the cabin, it is only necessary to use a crane to connect the hook 5 and start the drive component 41, so that the drive component 4 drives the sliding cover 2 to slide along the first direction X to open the hoisting port, and use another crane to lift the equipment in the cabin out from the clearance port and the hoisting port. This process does not require the entire cabin cover 100 to be removed, which reduces the process of hoisting operations and avoids the situation of operators performing high-altitude operations outside the cabin cover 100, thereby improving the work efficiency of the equipment hoisting process.

[0049] Please see Figure 4 and Figure 6 In one embodiment of this utility model, the cabin cover 100 further includes a sliding assembly 6. Multiple sliding assemblies 6 are arranged along a first direction X. Each sliding assembly 6 includes a roller 61, which rolls in contact with the bottom of the sliding cover 2. This arrangement allows the roller 61 to be supported on the bottom surface of the sliding cover 2, thereby converting the sliding friction between the sliding cover 2 and the cover body 1 into rolling friction between the sliding cover 2 and the roller 61. This helps reduce the output power of the drive component 41 and simultaneously increases the moving speed of the sliding cover 2, thus improving operational efficiency.

[0050] Further, please refer to Figure 3 and Figure 4 In one embodiment of this utility model, a plurality of sliding components 6 arranged along the first direction X are considered as a support group. The cabin cover 100 includes two support groups, and the sliding cover 2 includes a symmetrical plane along the vertical direction Y and parallel to the first direction X. The two support groups are symmetrically arranged along the symmetrical plane. This arrangement ensures that two rows of sliding components 6 are evenly arranged on both sides of the bottom surface of the sliding cover 2, thereby allowing the weight of the sliding cover 2 to be evenly distributed to each sliding component 6, which helps to ensure the stability of the sliding cover 2 during movement.

[0051] In one embodiment of the present invention, a sliding groove is provided on the bottom surface of the sliding cover 2, and the roller 61 cooperates with the sliding groove to further restrict the movement direction of the sliding cover 2 and prevent the sliding cover 2 from shifting during translation.

[0052] In one embodiment of this utility model, please refer to Figure 3 and Figure 5The sliding assembly 6 also includes a support 62 and a base 63. The base 63 is installed on the side of the support platform 3 facing the sliding cover 2, and the support 62 is installed on the side of the base 63 facing the sliding cover 2. The roller 61 is rotatably mounted on the support 62. The base 63 is integrally formed with the support platform 3, and a threaded hole is pre-drilled on the top surface of the base 63. The support 62 is connected to the base 63 through the threaded hole. The pressure in the roller 61 is transmitted sequentially to the support 62 and the base 63, and finally to the support platform 3. In this embodiment, the projected area of ​​the base 63 on the horizontal plane is larger than that of the support 62 on the horizontal plane, thereby reducing the pressure transmitted from the base 63 to the support platform 3 and preventing stress concentration in the support platform 3, which could lead to deformation. Furthermore, the support 62 and the roller 61 are connected by a shaft and a bearing, with the bearing positioned between the roller 61 and the shaft, which facilitates the rotation of the roller 61.

[0053] Furthermore, in one embodiment of this utility model, please refer to... Figure 3 and Figure 5 The sliding assembly 6 also includes an auxiliary stabilizing kit 64, which comprises two hinge seats 641 and a pull rod 642. One hinge seat 641 is mounted on the side of the base 63 facing the sliding cover 2, and the other hinge seat 641 is mounted on the cover 1. The two ends of the pull rod 642 are hinged to the two hinge seats 641 respectively. This arrangement allows the cover 1 to apply a pulling force to the base 63, thereby preventing the base 63 from tilting, sinking, or deforming, and further improving the stability of the sliding cover 2 during translation.

[0054] Furthermore, please refer to Figure 6 In one embodiment of this utility model, each sliding component 6 includes two sets of auxiliary stabilizing kits 64 spaced apart. The two sets of auxiliary stabilizing kits 64 are symmetrically arranged along the vertical plane containing the central axis of the roller 61, thereby making the force on both ends of the base 63 more balanced, and further reducing the probability of deformation of the base 63.

[0055] In one embodiment of this utility model, please refer to Figure 6 Along the first direction X, the sliding cover 2 has a protrusion 21 near the front end 12. The cover 1 includes a top plate 11 with a lifting opening. The top surface of the protrusion 21 is in contact with the bottom surface of the top plate 11. The projection of the protrusion 21 on the horizontal plane overlaps with the projection of the top plate 11 on the horizontal plane. This arrangement, where the protrusion 21 and the top plate 11 are staggered, facilitates waterproofing and dustproofing at the joint between the protrusion 21 and the top plate 11. In another embodiment, the bottom surface of the protrusion 21 is in contact with the top surface of the top plate 11, which also achieves waterproofing and dustproofing.

[0056] Furthermore, in one embodiment of the present invention, in order to improve the waterproof performance at the joint between the protrusion 21 and the top plate 11, a waterproof coating, such as a resin coating and a rubber coating, is applied to the top surface of the protrusion 21.

[0057] In one embodiment of this utility model, the cabin cover 100 further includes a locking assembly, which includes a lifting member and a pin. The protrusion 21 has a through hole, and the bottom of the top plate 11 has a blind hole. The lifting member is used to drive the pin through the through hole and the blind hole. The lifting member includes either a screw jack or a hydraulic jack. After the sliding cover 2 is installed on the lifting opening, the lifting member drives the pin through the through hole, causing the end of the pin to enter the blind hole, thereby locking the sliding cover 2 to the top plate 11. Depending on the needs, one lifting member can simultaneously drive multiple pins to rise and fall; two or more lifting members can also be installed according to actual requirements.

[0058] This utility model also proposes a wind turbine generator set, which includes a nacelle cover 100. The specific structure of the nacelle cover 100 is as described in the above embodiments. Since this wind turbine generator set adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. Please refer to [link to relevant documentation]. Figure 4 The wind turbine generator set also includes a main bearing 200, a gearbox 300, and a generator 400 arranged sequentially inside the housing 1 along the first direction X. When maintenance is required, the main bearing 200, gearbox 300, and generator 400 can all be lifted out through the clearance opening and the lifting opening.

[0059] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A cabin canopy, characterized in that, include: The cover includes a front end and a rear end, and the top of the cover has a hoisting opening. Limiting grooves are provided on both sides of the hoisting opening. The direction from the front end to the rear end is defined as the first direction. A sliding cover, wherein the two sides of the sliding cover are respectively accommodated in the two limiting grooves, and the sliding cover can slide along the first direction; A support platform is connected to the inner wall of the cover. The support platform has a clearance opening, which coincides with the projection of the hoisting opening onto any horizontal plane in the vertical direction. A drive assembly includes a drive member, a drive wheel, and a rack. The rack is mounted on the bottom surface of the sliding cover along the first direction. The drive member is mounted on one end of the support platform near the rear end. The drive wheel is mounted on the output shaft of the drive member and meshes with the rack. A hook is installed on the top surface of the sliding cover.

2. The nacelle canopy as described in claim 1, characterized in that, The cabin cover also includes a sliding assembly, of which a plurality of sliding assemblies are arranged along the first direction. Each sliding assembly includes a roller, which rolls in cooperation with the bottom of the cover.

3. The cabin cover as claimed in claim 2, characterized in that: the plurality of sliding components arranged along the first direction constitute a support group; The nacelle canopy includes two support groups, and the sliding cover includes a symmetrical plane along the vertical direction and parallel to the first direction, with the two support groups symmetrically arranged along the symmetrical plane.

4. The nacelle canopy as described in claim 3, characterized in that, The sliding assembly further includes a support and a base. The base is installed on the side of the support platform facing the sliding cover, and the support is installed on the side of the base facing the sliding cover. The roller is rotatably mounted on the support.

5. The nacelle canopy as described in claim 4, characterized in that, The sliding assembly also includes an auxiliary stabilizing kit, which includes two hinge seats and a pull rod. One of the hinge seats is mounted on the side of the base facing the sliding cover, and the other hinge seat is mounted on the cover. The two ends of the pull rod are respectively hinged to the two hinge seats.

6. The nacelle canopy as described in claim 5, characterized in that, Each of the sliding components includes two sets of the auxiliary stabilization kits spaced apart.

7. The nacelle canopy as claimed in claim 1, characterized in that, Along the first direction, the sliding cover has a protrusion at one end near the front end, the cover body includes a top plate, the top plate has the hoisting opening, and the top surface of the protrusion is in contact with the bottom surface of the top plate.

8. The nacelle canopy as described in claim 7, characterized in that, The top surface of the protrusion is coated with a waterproof coating.

9. The nacelle canopy as described in claim 7, characterized in that, The nacelle cover also includes a locking assembly, which includes a lifting member and a pin. The protrusion has a through hole, and the bottom of the top plate has a blind hole. The lifting member is used to drive the pin through the through hole and the blind hole.

10. A wind turbine generator set, characterized in that, The nacelle cover, as described in any one of claims 1 to 9, further includes a main bearing, a gearbox, and a generator arranged sequentially inside the cover along the first direction.

Images