Lightweight wind turbine nacelle

Abstract

The utility model relates to a kind of lightweight wind turbine generator system housings, it includes shell body, the shell body inside is provided with first support plate and second support plate, the first support plate is located the two sides of second support plate thickness direction, the first support plate and second support plate are annular, the thickness of the first support plate is x, the thickness of the second support plate is y, x>y, 2x+y<3a.The application has the effect of reducing shell weight, reducing material cost, reducing processing cost.

Description

Technical Field

[0001] This utility model relates to the field of generators, and in particular to a lightweight wind turbine generator housing. Background Technology

[0002] A generator set is a machine that converts other forms of energy into electrical energy. The casing is one of the important components of a generator set.

[0003] Reference Figure 1-2 A conventional wind turbine generator casing includes a casing body 1 and at least three support plates 7 disposed inside the casing body 1. The three support plates 7 have the same structure and thickness and support the stator core. The casing body 1 includes a bottom plate 11, a side plate 12 and an end plate 13. The outer peripheral wall of the support plate 7 is welded to the inner peripheral wall of the casing body 1. The support plate 7 has a uniform thickness of a, which is usually 35mm-50mm. A connecting rod 5 passes through the top of the support plate 7. After passing through the support plate 7, the two ends of the connecting rod 5 are fixedly connected to the end plate 13 of the casing body 1. The raw material cost and machining cost of traditional generator casings are high.

[0004] Therefore, a lightweight wind turbine generator casing is needed to reduce the weight of the casing, lower material costs, and reduce processing costs. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a lightweight wind turbine generator housing.

[0006] The lightweight wind turbine generator casing provided in this application adopts the following technical solution:

[0007] A lightweight wind turbine generator housing includes a housing body, inside which a first support plate and a second support plate are disposed. The first support plate is located on both sides of the second support plate in the thickness direction. Both the first and second support plates are annular. The thickness of the first support plate is x, and the thickness of the second support plate is y, where x > y and 2x + y < 3a.

[0008] Preferably, the top of the first support plate is annular, the bottom of the first support plate is adapted to the inner wall of the housing body, an auxiliary plate is fixedly connected to the outer peripheral wall of the first support plate, the auxiliary plate is fixedly connected above the first support plate, the bottom surface of the auxiliary plate is fixedly connected to the top surface of the first support plate, and the outer walls at both ends of the auxiliary plate in the length direction are fixedly connected to the inner walls on both sides of the housing body in the width direction.

[0009] Preferably, the thickness of the auxiliary plate is the same as the thickness of the second support plate.

[0010] Preferably, a connecting rod passes through the auxiliary plate, the connecting rod passes through the auxiliary plate and is fixedly connected to the auxiliary plate, the connecting rod is located at both ends in the length direction of the auxiliary plate, and the two ends of the connecting rod are fixedly connected to the end plate of the housing body.

[0011] Preferably, the outer peripheral surface of the second support plate is fixedly connected to the inner peripheral wall of the housing body.

[0012] Preferably, the top of the second support plate is open.

[0013] Preferably, the two first support plates are symmetrically located on both sides of the thickness direction of the second support plate.

[0014] Preferably, the first support plate, the second support plate, the auxiliary plate, and the connecting rod are all made of steel plates.

[0015] In summary, this application includes the following beneficial technical effects:

[0016] By optimizing the internal structure of the housing, the middle partition plate of the stress-bearing part of the housing adopts a combination of a first support plate with a thickness of 50mm and a second support plate with a thickness of 10mm. Since the thicker first support plate is symmetrically located on both sides of the thinner second support plate, it can not only ensure stable support for the stator core and ensure uniform stress on the stator core, but also reduce the weight of the housing, reduce material costs, and reduce processing costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the casing before the improvement.

[0018] Figure 2 This is a structural diagram showing the three support plates after the side panel on one side of the housing body is hidden in the width direction before the improvement.

[0019] Figure 3 This is a schematic diagram of the overall structure of the lightweight wind turbine generator casing in the embodiments of this application.

[0020] Figure 4 This is a structural diagram showing the first support plate and the second support plate after the side plate on one side of the width direction of the hidden housing body is hidden in this embodiment of the application.

[0021] Explanation of reference numerals in the attached drawings: 1. Main body of the casing; 11. Base plate; 12. Side plate; 13. End plate; 14. Reinforcing rib; 2. First support plate; 3. Second support plate; 4. Auxiliary plate; 5. Connecting rod; 6. Reinforcing rod; 7. Support plate. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 3-4 This application will be described in further detail.

[0023] This application discloses a lightweight wind turbine generator housing.

[0024] Reference Figure 3-4 The lightweight wind turbine generator casing includes a casing body 1. The casing body 1 includes a base plate 11, side plates 12, and end plates 13, which are fixedly connected. The side plates 12 are fixedly connected to both sides of the base plate 11 in the width direction, and the end plates 13 are fixedly connected to both ends of the base plate 11 in the length direction and are also fixedly connected to the side plates 12. The end plates 13 have a circular hole in the center for the stator core to enter. The base plate 11 is provided with reinforcing ribs 14, which are located on both sides of the side plates 12 and fixedly connected to the side plates 12. Each side plate 12 corresponds to four reinforcing ribs 14, and every two reinforcing ribs 14 are arranged adjacently to form two sets of reinforcing components. The two sets of reinforcing components are located at both ends near the length direction of the side plates 12.

[0025] The housing body 1 is provided with a first support plate 2 and a second support plate 3. The two first support plates 2 are symmetrically located on both sides of the thickness direction of the second support plate 3. The distance between the first support plate 2 and the adjacent end plate 13 of the housing body 1 is s1, and the distance between the first support plate 2 and the second support plate 3 is s2. s1=s2, which ensures the uniformity of the force on the stator core.

[0026] Both the first support plate 2 and the second support plate 3 are annular. The thickness of the first support plate 2 is x, and the thickness of the second support plate 3 is y, where x > y, 2x + y < 3a, x = 50mm, y = 10mm. If a = 50mm, 2x + y = 110, 3a = 150. Under the premise of the same material, the combined weight of the two first support plates 2 and one second support plate 3 in this embodiment is less than the weight of the three support plates 7 with the same structure before the improvement.

[0027] The top of the first support plate 2 is annular, and its bottom is fitted to the inner wall of the housing body 1. An auxiliary plate 4 is fixedly connected to the outer peripheral wall of the first support plate 2. The auxiliary plate 4 is fixedly connected above the first support plate 2, and its bottom surface is fixedly connected to the top surface of the first support plate 2. The outer walls at both ends of the auxiliary plate 4 in the length direction are fixedly connected to the inner walls on both sides of the housing body 1 in the width direction. The thickness of the auxiliary plate 4 is the same as that of the second support plate 3. By welding the auxiliary plate 4, which is thinner than the first support plate 2, to the housing body 1, the weight of the internal support structure of the housing body 1 is further reduced.

[0028] The top of the second support plate 3 is open, which further reduces the weight of the internal support structure of the casing body 1.

[0029] A connecting rod 5 passes through the auxiliary plate 4 and is fixedly connected to it. The connecting rod 5 is located at both ends of the auxiliary plate 4 along its length, and both ends of the connecting rod 5 are fixedly connected to the end plate 13 of the housing body 1. The end face of the connecting rod 5 is square. The connecting rod 5 connects the two first support plates 2 to the end plate 13 of the housing body 1, thereby improving the overall structural stability of the housing.

[0030] The top surface of the housing body 1 is also provided with a reinforcing rod 6. The length direction of the reinforcing rod 6 is consistent with the width direction of the housing body 1. The two ends of the reinforcing rod 6 are fixedly connected to the top surface of the two side plates 12 of the housing body 1. The reinforcing rod 6 is located near the two ends of the housing body 1, which further improves the overall structural stability of the housing.

[0031] The side wall of the first support plate 2 is welded to the inner wall of the side plate 12 of the housing body 1, the bottom wall of the first support plate 2 is welded to the top surface of the bottom plate 11 of the housing body 1, and the top of the first support plate 2 is welded to the inner wall of the side plate 12 of the housing body 1 via an auxiliary plate 4. The side wall of the second support plate 3 is welded to the inner wall of the side plate 12 of the housing body 1, and the bottom wall of the second support plate 3 is welded to the top surface of the bottom wall of the housing body 1.

[0032] The main body of the casing 1, the first support plate 2, the second support plate 3, the auxiliary plate 4, the connecting rod 5, and the reinforcing rod 6 are all made of steel plates to ensure the structural strength of the overall casing.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lightweight wind turbine generator casing, characterized in that: The device includes a housing body (1), inside which a first support plate (2) and a second support plate (3) are provided. The first support plate (2) is located on both sides of the second support plate (3) in the thickness direction. Both the first support plate (2) and the second support plate (3) are annular. The thickness of the first support plate (2) is x, and the thickness of the second support plate (3) is y, where x > y and 2x + y < 3a.

2. The lightweight wind turbine generator casing according to claim 1, characterized in that: The top of the first support plate (2) is circular, and the bottom of the first support plate (2) is adapted to the inner wall of the housing body (1). An auxiliary plate (4) is fixedly connected to the outer peripheral wall of the first support plate (2). The auxiliary plate (4) is fixedly connected above the first support plate (2). The bottom surface of the auxiliary plate (4) is fixedly connected to the top surface of the first support plate (2). The outer walls at both ends of the auxiliary plate (4) in the length direction are fixedly connected to the inner walls on both sides of the housing body (1) in the width direction.

3. The lightweight wind turbine generator housing according to claim 2, characterized in that: The thickness of the auxiliary plate (4) is the same as the thickness of the second support plate (3).

4. The lightweight wind turbine generator casing according to claim 2, characterized in that: A connecting rod (5) passes through the auxiliary plate (4). The connecting rod (5) passes through the auxiliary plate (4) and is fixedly connected to the auxiliary plate (4). The connecting rod (5) is located at both ends of the auxiliary plate (4) along its length. The two ends of the connecting rod (5) are fixedly connected to the end plate (13) of the housing body (1).

5. The lightweight wind turbine generator casing according to claim 1, characterized in that: The outer peripheral surface of the second support plate (3) is fixedly connected to the inner peripheral wall of the housing body (1).

6. The lightweight wind turbine generator casing according to claim 1, characterized in that: The top of the second support plate (3) is open.

7. The lightweight wind turbine generator casing according to claim 1, characterized in that: The two first support plates (2) are symmetrically located on both sides of the thickness direction of the second support plate (3).

8. The lightweight wind turbine generator casing according to claim 1, characterized in that: x=50mm, y=10mm.

9. The lightweight wind turbine generator casing according to claim 1, characterized in that: The first support plate (2), the second support plate (3), the auxiliary plate (4), and the connecting rod (5) are all made of steel plates.

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