Rear frame of wind turbine and wind turbine

Abstract

The utility model discloses a rear frame of a wind turbine and a wind turbine, the rear frame includes two main beams, two generator support beams and a tail structure, the two main beams extend longitudinally and are spaced apart in the transverse direction, each main beam is provided with a front flange and a rear flange, the rear frame is connected to the main frame of the unit through the front flange of the main beam; the two generator support beams extend transversely and are spaced apart in the longitudinal direction, the two ends of each generator support beam are detachably connected to the two main beams respectively; the tail structure is detachably connected to the rear flange of the main beam. The rear frame can be disassembled into multiple sections for transportation, which can improve transportation efficiency and reduce transportation costs; and by replacing or adjusting the generator support beam, it can be compatible with generators of different models, thereby reducing development costs; by setting a detachable tail structure to meet the need for hoisting the unit transformer, it is compatible with both transformer-mounted and transformer-mounted units.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a rear frame of a wind turbine set and a wind turbine set. Background Art

[0002] In today's world of increasing energy shortages and deteriorating environment, but people's demand for energy is growing, wind power generation has the advantages of environmental protection, energy saving, and renewable energy. It is one of the important energy sources for sustainable development in the future and is increasingly attracting attention and attention from countries around the world. my country has very rich wind resources. In recent years, the wind power industry has developed rapidly, the installed capacity has continued to grow, and the annual power generation ranks among the top in the world. Wind power generation technology has become increasingly mature and popular. However, some problems have gradually been exposed, such as the convenience of equipment maintenance, control of development and transportation costs, etc.

[0003] At present, it is a trend to pursue higher power generation while reducing costs. Wind turbine models are becoming increasingly diversified, not only the operating power is gradually increasing, increasing power generation; but also reducing development costs by adjusting the layout of the unit. This series of changes has put forward higher requirements for the design of the unit's rear frame. The wind turbine's operating power is gradually increasing, and the weight and torque transmitted to the rear frame are gradually increasing, resulting in a gradual increase in the load on the rear frame. In order to meet the load-bearing requirements, a larger rear frame needs to be designed, which will also increase the weight of the rear frame. At the same time, the main connection form of the rear frame is welding, which requires overall transportation, which also leads to higher transportation costs. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the prior art and to provide a rear frame of a wind turbine set.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes a rear frame of a wind turbine generator set, comprising:

[0006] Two main beams, the two main beams extending in the longitudinal direction and spaced apart in the transverse direction, each main beam being provided with a front flange and a rear flange, the rear frame being connected to the main frame of the unit via the front flange;

[0007] Two generator support beams, the two generator support beams extending in the transverse direction and spaced apart in the longitudinal direction, and two ends of each generator support beam are detachably connected to the two main beams respectively;

[0008] The tail structure is detachably connected to the rear end flanges of the two main beams.

[0009] Furthermore, an adjustment gasket is provided at the junction of the main beam and the generator support beam.

[0010] Furthermore, the generator support beam has a variety of configurations matching different generators.

[0011] Furthermore, the main beam is provided with bolt connection holes located at different positions along the longitudinal direction for connection with generator support beams of various configurations.

[0012] Furthermore, the rear frame also includes at least two transverse reinforcement beams respectively located in front of and behind the generator support beam, and both ends of each transverse reinforcement beam are respectively connected to the two main beams by bolts.

[0013] Furthermore, an adjustment gasket is provided at the junction of the main beam and the transverse reinforcement beam.

[0014] Furthermore, the tail structure includes two longitudinal connecting beams respectively connected to the two main beams through flanges and a load-bearing frame detachably connected to the two longitudinal connecting beams.

[0015] Furthermore, the bearing frame includes two transverse frame beams and two longitudinal frame beams, the two ends of the two transverse frame beams are respectively connected to the two longitudinal connecting beams by bolts, and the two ends of the two longitudinal frame beams are respectively connected to the two transverse frame beams.

[0016] The utility model also provides a wind turbine set, which comprises the above-mentioned rear frame.

[0017] The rear frame of the utility model is particularly suitable for large wind turbines. While meeting the carrying capacity, it can be disassembled into multiple sections for transportation, which can improve transportation efficiency and reduce transportation costs. It is also compatible with generators of different models. By replacing or adjusting the generator support beam, it can be adapted to different generator interfaces, thereby reducing development costs. In addition, by providing a detachable tail structure, the need for hoisting the unit transformer can be met, thereby being compatible with both transformer-mounted and transformer-lower units. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following drawings of the present invention are used as part of the present invention for understanding the present invention. The drawings show the implementation of the present invention and its description, and are used to explain the device and principle of the present invention. In the drawings,

[0019] Figure 1 It is a schematic diagram of the overall structure of the rear frame of an embodiment of the utility model;

[0020] Figure 2 It is a front view of the rear frame of the embodiment of the utility model.

[0021] Reference numerals:

[0022] 1. Main beam; 11. Front flange; 12. Rear flange;

[0023] 2. Generator support beam;

[0024] 3. Tail structure; 31. Longitudinal connecting beam; 32. Load-bearing frame; 321. Transverse frame beam; 322. Longitudinal frame beam;

[0025] 4. Transverse reinforcement beams. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The described embodiments are only preferred embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be understood that, unless otherwise defined, the technical and scientific terms used herein are the same as those generally understood by those skilled in the art of the technical field of the present invention. The purpose of the terms used herein is only to describe specific embodiments and is not intended to be a limitation of the present invention. Terms such as "parts" and "pieces" that appear in this article can represent both single parts and combinations of multiple parts. The singular forms of "one", "one" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. Ordinal numbers such as "first" and "second" are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component". When the terms "comprising" and / or "including" are used in this specification, it indicates that the features, wholes, steps, operations, elements and / or components are present, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof. The terms "upper", "lower", "front", "rear", "left", "right", "inside", "outside", "center", "vertical", "horizontal" and similar expressions are for illustrative purposes only and are not restrictive. The terms "connected", "installed", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The features described in this document in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0028] Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings. These drawings show representative embodiments of the present invention and are not intended to limit the present invention.

[0029] The utility model provides a rear frame of a wind turbine set. The rear frame is installed in the cabin of the wind turbine set and connected to the main frame of the set. Figure 1 and Figure 2 As shown, the rear frame includes two main beams 1, two generator support beams 2 and a tail structure 3. The two main beams 1 extend in the longitudinal direction and are spaced apart in the transverse direction, each main beam 1 is provided with a front flange 11 and a rear flange 12, and the rear frame is connected to the main frame of the unit through the front flange 11; the two generator support beams 2 extend in the transverse direction and are spaced apart in the longitudinal direction, and the two ends of each generator support beam 2 are detachably connected to the two main beams 1 respectively; the tail structure 3 is detachably connected to the rear flange 12 of the main beam 1.

[0030] The rear frame of the utility model is particularly suitable for large wind turbines. While meeting the carrying capacity, it can be disassembled into multiple sections for transportation, which can improve transportation efficiency and reduce transportation costs. It is also compatible with generators of different models. By replacing or adjusting the generator support beam, it can be adapted to different generator interfaces, thereby reducing development costs. In addition, by providing a detachable tail structure, the need for hoisting the unit transformer can be met, thereby being compatible with both transformer-mounted and transformer-lower units.

[0031] According to the implementation mode of the utility model, the generator support beam has a variety of configurations that match different generators. When the unit needs to replace a generator with a different external structure, it is only necessary to replace the generator support beam on the rear frame without replacing the entire rear frame. Adjustment gaskets can be provided at the junction of the main beam 1 and the generator support beam 2. When the generator support beam needs to be replaced to match generators of different models, the corresponding number of adjustment gaskets can be added or reduced at the junction of the generator support beam and the main beam to adjust the gap, thereby achieving adaptive installation of different generator support beams. In addition, the main beam 1 can be provided with bolt connection holes located at different positions along the longitudinal direction for connecting with generator support beams of various configurations, so as to adapt to generators of different axial sizes.

[0032] According to the embodiment of the utility model, the rear frame further includes at least two transverse reinforcement beams 4 respectively located in front of and behind the generator support beam 2, and the two ends of each transverse reinforcement beam 4 are respectively connected to the two main beams 1 by bolts. An adjustment gasket can be provided at the joint of the main beam 1 and the transverse reinforcement beam 4 to adjust the gap. The main beam 1 can be an approximately H-shaped structure formed by welding multiple bent steel plates and straight steel plates, and a reinforcing rib is provided at the connection position with the generator support beam 2 and the transverse reinforcement beam 4.

[0033] According to the implementation mode of the utility model, the tail structure 3 includes two longitudinal connecting beams 31 respectively connected to the two main beams 1 by flanges and a load-bearing frame 32 detachably connected to the two longitudinal connecting beams 31. The load-bearing frame 32 includes two transverse frame beams 321 and two longitudinal frame beams 322, the two ends of the two transverse frame beams 321 are respectively connected to the two longitudinal connecting beams 31 by bolts, and the two ends of the two longitudinal frame beams 322 are respectively connected to the two transverse frame beams 321. Adjustment gaskets can be provided at the joints of the longitudinal connecting beams 31 and the transverse frame beams 321 to adjust the gap. For models with the unit transformer placed below, the tail structure can be removed to reduce the weight of the cabin; for models with the unit transformer placed above, the unit transformer can be hoisted or supported by installing the tail structure.

[0034] The utility model has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the utility model is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of protection claimed by the utility model. The protection scope of the utility model is defined by the attached claims and their equivalent scope.

Claims

1. A rear frame of a wind turbine generator set, characterized in that: include: Two main beams (1), the two main beams (1) extending in the longitudinal direction and spaced apart in the transverse direction, each main beam (1) being provided with a front flange (11) and a rear flange (12), the rear frame being connected to the main frame of the unit via the front flange (11); Two generator support beams (2), the two generator support beams (2) extending in the transverse direction and spaced apart in the longitudinal direction, and two ends of each generator support beam (2) being detachably connected to the two main beams (1); A tail structure (3), wherein the tail structure (3) is detachably connected to the rear end flanges (12) of the two main beams (1).

2. The rear frame according to claim 1, characterized in that: An adjustment gasket is provided at the joint between the main beam (1) and the generator support beam (2).

3. The rear frame according to claim 1, characterized in that: The generator support beam (2) has a variety of configurations matching different generators.

4. The rear frame according to claim 3, characterized in that: The main beam (1) is provided with bolt connection holes located at different positions along the longitudinal direction, so as to be connected with generator support beams (2) of various configurations.

5. The rear frame according to claim 3, characterized in that: The rear frame further comprises at least two transverse reinforcement beams (4) respectively located in front of and behind the generator support beam (2), and both ends of each transverse reinforcement beam (4) are respectively connected to the two main beams (1) by bolts.

6. The rear frame according to claim 5, characterized in that: An adjustment gasket is provided at the junction of the main beam (1) and the transverse reinforcement beam (4).

7. The rear frame according to claim 1, characterized in that: The tail structure (3) comprises two longitudinal connection beams (31) respectively connected to the two main beams (1) via flanges, and a load-bearing frame (32) detachably connected to the two longitudinal connection beams (31).

8. The rear frame according to claim 7, characterized in that: The load-bearing frame (32) comprises two transverse frame beams (321) and two longitudinal frame beams (322), the two ends of the two transverse frame beams (321) being respectively connected to the two longitudinal connecting beams (31) by bolts, and the two ends of the two longitudinal frame beams (322) being respectively connected to the two transverse frame beams (321).

9. A wind turbine generator set, characterized in that: The wind turbine generator set comprises the rear frame as described in any one of claims 1-8.

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