Box-type transformer substation upward moving type wind turbine generator cabin

Abstract

The utility model discloses an upward-moving type wind turbine generator cabin of a box transformer substation. The cabin comprises a cabin body, a transmission chain assembly, a transformer, a converter and an object hanging opening. The transmission chain assembly is positioned at the front part in the cabin; the converter is located in the middle of the interior of the cabin, and the object lifting opening is located in the tail of the interior of the cabin. The outer side of the front portion of the cabin is detachably connected with a transformer cabin, and the transformer is arranged in the transformer cabin. The whole cabin length can be shortened, the cabin and the transformer cabin are detachable and can be transported in a split mode, transportation in mountainous areas with multiple ramps is facilitated, and width and length limitation in road transportation is solved; modularized design and assembly connection of the cabin and the transformer cabin are achieved, switching between box-type transformer substation upward movement and non-box-type transformer substation upward movement can be achieved through adjustment of part of structural parts, universality of box-type transformer substation upward movement and non-box-type transformer substation molds is achieved, and development time and cost of different units are reduced. The scheme is low in implementation difficulty and controllable in risk.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of wind power, and in particular to a box-type upward-movable wind turbine nacelle. Background Art

[0002] The wind turbine nacelle is the most important system of a wind turbine. The core components of the wind turbine, such as the generator, gearbox and nacelle control cabinet, are basically installed in the wind turbine nacelle. The wind turbine nacelle is the power generation system of the wind turbine, and it also plays a supporting and external safety protection role for the equipment installed in the wind turbine nacelle.

[0003] like Figure 1 As shown in the figure, in onshore wind turbines, in order to reduce cable costs and power loss, converters and transformers are often placed inside the nacelle. The layout of the nacelle with the box-type transformer moved upwards needs to comprehensively consider issues such as the length of the transmission chain, the layout of the unit radiator, the layout of the converter and the layout of the transformer. In the design of the box-type transformer moved upwards, the nacelle escape hatch is arranged in the middle of the nacelle, the transformer is placed at the rear end of the nacelle, and the nacelle cooler is often placed on the nacelle rack or at the rear end of the nacelle as an independent ventilation device, resulting in a longer nacelle rack.

[0004] When designing onshore units larger than 10MW, as the megawatt increases, the size of components within the nacelle, such as the transmission chain, transformer, and converter, increases. If a conventional layout is used, the entire nacelle will be too long and too wide, making road transportation difficult. At the same time, the extra length causes the center of gravity of the nacelle to be shifted to the rear during transportation, making it impossible to pass through sections with steeper slopes. Additional vehicles will be needed for split transportation, increasing transportation costs. Finally, in order to overcome frame deformation, the extra-long nacelle layout requires strengthened structural design, which increases weight and costs. Utility Model Content

[0005] In view of the technical problems existing in the prior art, the utility model provides a modular, low-cost, box-type upward-movable wind turbine nacelle.

[0006] In order to solve the above technical problems, the technical solutions proposed by the present invention are as follows:

[0007] A box-type upward-movable wind turbine nacelle comprises a nacelle body, a transmission chain assembly, a transformer, an inverter and a lifting port; the transmission chain assembly is located at the front of the nacelle body; the inverter is located in the middle of the nacelle body, and the lifting port is located at the rear of the nacelle body; a transformer cabin is detachably connected to the outer front side of the nacelle body, and the transformer is placed in the transformer cabin.

[0008] As a further improvement of the above technical solution:

[0009] The transmission chain assembly is a double-fed transmission chain.

[0010] The transformer cabin is located on the front left side of the cabin body.

[0011] The nacelle body includes a nacelle, a front frame and a rear frame, the front frame and the rear frame are connected, and the nacelle is located on the front frame and the rear frame; the transmission chain assembly is located on the front frame, and the converter is located on the rear frame.

[0012] The cabin body includes a truss and a cabin cover. The cabin cover is arranged outside the truss and is supported on the front frame and the rear frame through multiple supporting points.

[0013] The left and right sides of the nacelle cover are inwardly contracted, and the top is a fastback structure.

[0014] A base frame is provided at the bottom of the transformer cabin, and the transformer is located on the base frame.

[0015] The transformer cabin includes a transformer cabin cover, which is assembled and installed on the chassis.

[0016] The escape hatch of the cabin body is shared with the object hanging hatch.

[0017] The converter is located on one side of the middle portion of the nacelle body.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] The utility model assembles the transformer cabin body on the left side of the front of the nacelle body, realizing modular assembly between the nacelle body and the transformer cabin. The nacelle body can be disassembled and transported separately from the nacelle body, solving the problem of the center of gravity being too far back in the original layout. At the same time, when the box-type transformer upward movement model needs to be switched to the non-box-type transformer upward movement model, the transformer cabin body can be removed, realizing the commonality of the front frame and the nacelle cover mold, etc., reducing the development time and cost of different units.

[0020] The utility model can shorten the length of the entire nacelle body. The nacelle body and the transformer compartment are detachable and can be transported separately, which is convenient for transportation in mountainous areas with many slopes, and solves the width and length limitations in road transportation; the nacelle body and the transformer compartment are modularly designed and assembled and connected, realizing modular design. By adjusting some structural parts, the upward movement of the box transformer and the upward movement of the non-box transformer can be switched, and the molds of the box transformer and the non-box transformer are universal, reducing the development time and cost of different units; the implementation difficulty of the above scheme is relatively low and the risks are controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is a schematic diagram of the layout structure of the box-type transformer with the cabin moved upward in the prior art.

[0022] Figure 2 This is a schematic diagram of the left side layout structure of the front cabin of the box-type upward-moving cabin transformer of the present utility model.

[0023] Figure 3 This is a frame structure diagram of the left side of the front cabin of the box-type upward-moving cabin transformer of the present utility model.

[0024] Legend: 1. Nacelle body; 101. Front frame; 102. Rear frame; 2. Drive chain assembly; 3. Control cabinet; 4. Transformer; 401. Transformer compartment; 5. Converter; 6. Lifting port; 7. Underframe. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 2-Figure 3 As shown, the embodiment of the present invention provides a nacelle for a wind turbine with a movable box-type transformer, comprising a nacelle body 1, a transmission chain assembly 2, a control cabinet 3, a transformer 4, a converter 5, an escape hatch, and a lifting hatch 6; the transmission chain assembly 2 is located at the front of the nacelle body 1; the converter 5 and the control cabinet 3 are located on one side of the middle portion of the nacelle body 1, and the lifting hatch 6 is located at the rear of the nacelle body 1, wherein the escape hatch and the lifting hatch 6 of the nacelle body 1 are shared; a transformer cabin 401 is detachably connected to the front outer side of the nacelle body 1, and the transformer 4 is placed in the transformer cabin 401. Specifically, the transformer cabin 401 is located on the left front portion of the nacelle body 1. The transmission chain assembly 2 is a double-fed transmission chain, which can effectively reduce the length of the unit.

[0027] Specifically, the nacelle body 1 includes a cabin, a front frame 101, and a rear frame 102. The front frame 101 and the rear frame 102 are connected, and the cabin is located on the front frame 101 and the rear frame 102; the transmission chain assembly 2 is located on the front frame 101, and the converter 5 is located on the rear frame 102. The cabin includes a truss and a cabin cover. The cabin cover is arranged on the outside of the truss and is supported on the front frame 101 and the rear frame 102 through multiple support points. The overall shape of the cabin cover adopts a full-arc tail design, with the left and right sides shrinking inward and the top having a fastback structure, which can effectively reduce the weight and number of internal maintenance platforms and effectively prevent the possibility of water accumulation on the top of the nacelle body 1.

[0028] Similarly, a base frame 7 is provided at the bottom of the transformer cabin 401, and the transformer 4 is located on the base frame 7. The transformer cabin 401 includes a transformer cabin cover, which is assembled and installed on the base frame 7. The overall shape of the transformer cabin cover is similar to that of the engine cabin cover.

[0029] The utility model adopts a top-mounted nacelle of a box-type transformer, in which the transformer 4 and the converter 5 are placed on the top of the nacelle body 1 and are directly connected to the power grid using a 35KV voltage. This can greatly save the number of unit cables, requiring only one, thereby reducing the unit cost and being suitable for some distributed wind farms and wind farms where land acquisition is difficult.

[0030] The utility model assembles the transformer cabin 401 on the left side of the front part of the nacelle body 1, realizes modular assembly between the nacelle body 1 and the transformer cabin 4, and can be disassembled and transported separately from the nacelle body 1, solving the problem of the center of gravity of the original layout being too far back; at the same time, when the box-type transformer upward movement model needs to be switched to the non-box-type transformer upward movement model, the transformer cabin 401 can be removed, realizing the commonality of the front frame 101 and the nacelle cover mold, etc., reducing the development time and cost of different units.

[0031] The present invention can shorten the length of the entire nacelle body 1. The nacelle body 1 and the transformer cabin 401 are detachable and can be transported separately, which is convenient for transportation in mountainous areas with many slopes, and solves the width and length limitations in road transportation; the nacelle body 1 and the transformer cabin 401 are modularly designed and assembled and connected, realizing modular design. By adjusting some structural parts, the upward movement of the box transformer and the upward movement of the non-box transformer can be switched, and the molds of the box transformer and the non-box transformer are universal, reducing the development time and cost of different units; the implementation difficulty of the above solution is relatively low and the risks are controllable.

[0032] As the megawatts of existing onshore wind turbines exceeding 10MW increase, the weight of the rear frame of the components within the nacelle body 1, according to the traditional layout, exceeds 16 tons. The total length of the nacelle exceeds 15 meters, and the center of gravity of the entire nacelle is located at the rear. By adjusting the nacelle layout of a 10MW onshore wind turbine according to the above scheme, that is, the transformer 4 is changed from the original rear position to the front position on the left side of the nacelle body 1, and the transformer 4 cabin is designed as an independent cabin that can be disassembled (such as bolted connection); the escape hatch and the lifting port 6 are integrated into the rear of the nacelle body 1 to save rack length. With this new layout, the overall length of the nacelle is about 13 meters, and the rack weight is reduced by 8 tons.

[0033] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0035] In this utility model, unless otherwise specified or limited, the terms "assemble," "connect," "connect," "fix," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0036] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be pointed out that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A box-type wind turbine nacelle with a movable upper part, characterized in that: The invention comprises a cabin body (1), a transmission chain assembly (2), a transformer (4), a converter (5) and a lifting port (6); the transmission chain assembly (2) is located at the front of the cabin body (1); the converter (5) is located at the middle of the cabin body (1), and the lifting port (6) is located at the rear of the cabin body (1); a transformer cabin (401) is detachably connected to the outer side of the front of the cabin body (1), and the transformer (4) is placed in the transformer cabin (401).

2. The box-type wind turbine nacelle according to claim 1 is characterized in that: The transmission chain component (2) is a double-fed transmission chain.

3. The box-type wind turbine nacelle according to claim 1 is characterized in that: The transformer cabin (401) is located on the front left side of the cabin body (1).

4. The box-type wind turbine nacelle according to claim 1, 2 or 3, characterized in that: The cabin body (1) comprises a cabin body, a front frame (101) and a rear frame (102); the front frame (101) and the rear frame (102) are connected, and the cabin body is located on the front frame (101) and the rear frame (102); the transmission chain assembly (2) is located on the front frame (101), and the converter (5) is located on the rear frame (102).

5. The box-type wind turbine nacelle according to claim 4 is characterized in that: The cabin body comprises a truss and a cabin cover, wherein the cabin cover is arranged outside the truss and supported on a front frame (101) and a rear frame (102) through a plurality of supporting points.

6. The box-type wind turbine nacelle according to claim 5 is characterized in that: The left and right sides of the nacelle cover are inwardly contracted, and the top is a fastback structure.

7. The box-type wind turbine nacelle according to claim 4 is characterized in that: A base frame (7) is provided at the bottom of the transformer cabin (401), and the transformer (4) is located on the base frame (7).

8. The box-type wind turbine nacelle according to claim 7 is characterized in that: The transformer cabin (401) comprises a transformer cabin cover, which is assembled and mounted on the base frame (7).

9. The box-type up-movable wind turbine nacelle according to claim 1, 2 or 3, characterized in that: The escape opening of the cabin body (1) is shared with the object hanging opening (6).

10. The box-type up-movable wind turbine nacelle according to claim 1, 2 or 3, characterized in that: The converter (5) is located on one side of the middle portion of the nacelle body (1).

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