Cooling system of semi-direct-driven wind driven generator

Abstract

The utility model relates to a semi-direct-drive wind driven generator cooling system which comprises a cabin, a cooling system assembly and a motor assembly, the cooling system assembly and the motor assembly are respectively and fixedly arranged on the cabin, the cooling system assembly and the motor assembly are vertically arranged at one end of the cabin, and the cooling system assembly cools the motor assembly. And the cooling system assembly is fixedly arranged at the upper end of the outer part of the cabin. According to the technical scheme, the structure is reasonable, compared with an existing cabin structure, the cabin layout is more compact, and the overall height of the cabin can be remarkably reduced; the generator cooling system has the advantages that the generator cooling system is simple in structure and more excellent in generator cooling performance, the stability of the generator in long-time work can be remarkably improved, the overall work efficiency of the generator is improved, cooling system components can be maintained and replaced more conveniently, maintenance personnel can operate conveniently, and rapid installation and rapid maintenance are achieved.

Description

Technical Field

[0001] The utility model relates to a generator device, in particular to a cooling system for a semi-direct drive wind turbine generator. Background Art

[0002] The internal space of the nacelle of a wind turbine generator is limited. The layout of each device should be reasonable and compact to minimize the connection distance between devices, reduce energy loss and failure risks. At the same time, it is also necessary to facilitate maintenance and leave enough operating space to ensure that maintenance personnel can easily access the devices for inspection, repair, component replacement and other work.

[0003] In addition, ventilation and heat dissipation inside the nacelle are also very important. Devices with large heat generation, such as generators and converters, should be as close as possible to the ventilation openings or heat dissipation devices to dissipate heat in time. In the traditional nacelle layout, the generator and its configured cooling system are combined into a module and arranged at the tail end of the nacelle. Most of them adopt the direct cooling method, specifically: the heat exchange cooling is carried out by the air inside the nacelle and the hot air generated by the generator. The air inside the nacelle enters the generator through parts such as the top of the tower barrel, the gap between the blade root and the fairing, and the gap between the nacelle and the fairing. The hot air inside the generator is sent out of the nacelle by a centrifugal fan. Although such a cooling method can achieve the function of heat dissipation and temperature reduction, the overall nacelle layout is still not compact enough, and the height of the nacelle is relatively uncontrollable. At the same time, for the maintenance and replacement of the entire system, it is not particularly easy for maintenance personnel to operate. Summary of the Invention

[0004] To solve the above technical problems, the purpose of the utility model is to provide a cooling system for a semi-direct drive wind turbine generator, which includes a nacelle, a cooling system component and a motor component. The cooling system component and the motor component are respectively fixedly installed on the nacelle. The cooling system component and the motor component are arranged up and down at one end of the nacelle. The cooling system component cools the motor component, and the cooling system component is fixedly installed at the upper end outside the nacelle.

[0005] Preferably, one end of the nacelle is the hub installation end, and the other end is the closed tail end. The cooling system component and the motor component are arranged up and down at the closed tail end of the nacelle.

[0006] Preferably, the nacelle is provided with a hub installation opening on the end face at the hub installation end, and the lower end face of the nacelle is provided with a tower barrel installation opening at the position of the hub installation opening.

[0007] Preferably, the upper end face of the nacelle has a settlement installation cavity at the closed tail end. The cooling system component is fixedly installed in the settlement installation cavity. The nacelle 1 also has a device installation cavity running through the front and back. The motor component is fixedly installed in the device installation cavity, and the cooling system component is located above the motor component.

[0008] Preferably, the nacelle is located at the bottom of the settlement installation cavity and has an installation contact surface, which is in contact and cooperation with the lower end of the cooling system assembly and the upper end of the motor assembly respectively. The installation contact surface is provided with air inlet holes and air outlet holes.

[0009] Preferably, the nacelle realizes air intake through the hub installation opening and the tower barrel installation opening.

[0010] Preferably, air inlet auxiliary openings communicating with the equipment installation cavity are provided at both sides of the nacelle at the closed tail end.

[0011] By means of the above scheme, the utility model has at least the following advantages:

[0012] 1. Compared with the existing nacelle structure, the technical scheme of this application has a more compact nacelle layout, which can significantly reduce the overall height of the nacelle.

[0013] 2. The technical scheme of this application also has better heat dissipation performance of the generator, which can significantly improve the stability of the generator during long-term operation and improve the overall working efficiency of the generator.

[0014] 3. The technical scheme of this application can more conveniently maintain and replace the cooling system assembly, facilitating the operation of maintenance personnel and realizing quick installation and quick maintenance.

[0015] The above description is only an overview of the technical scheme of the utility model. In order to be able to understand the technical means of the utility model more clearly and implement it according to the content of the specification, the following takes the preferred embodiment of the utility model and combines with the attached drawings to describe in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the attached drawings required to be used in the embodiment will be briefly introduced below. It should be understood that the following attached drawings only show a certain embodiment of the utility model, so it should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related attached drawings can also be obtained according to these attached drawings without creative labor.

[0017] Figure 1 is a three-dimensional structural schematic diagram of a semi-direct drive wind turbine cooling system of this application;

[0018] Figure 2 is a three-dimensional structural schematic diagram of the nacelle of this application;

[0019] Figure 3 is a schematic diagram of the relative positions of the cooling system assembly and the motor assembly of this application;

[0020] Figure 4 is another three-dimensional structural schematic diagram of the nacelle of this application.

[0021] In the figure: 1 nacelle, 2 cooling system assembly, 3 motor assembly, 4 hub installation opening, 5 tower barrel installation opening, 6 settlement installation cavity, 7 equipment installation cavity, 8 installation contact surface, 9 air inlet hole, 10 air outlet hole, 11 auxiliary air inlet hole. Specific implementation manner

[0022] The following combines the accompanying drawings and embodiments to further describe in detail the specific implementation manner of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0023] See Figures 1 to 4 , a cooling system for a semi-direct drive wind turbine of the present utility model includes a nacelle 1, a cooling system assembly 2 and a motor assembly 3. The cooling system assembly 2 and the motor assembly 3 are respectively fixedly installed on the nacelle 1. The cooling system assembly 2 and the motor assembly 3 are arranged up and down at one end of the nacelle 1. The cooling system assembly 2 performs a cooling operation on the motor assembly 3, and the cooling system assembly 2 is fixedly installed at the upper end outside the nacelle 1.

[0024] Preferably, one end of the nacelle 1 is a hub installation end, and the other end is a closed tail end. The cooling system assembly 2 and the motor assembly 3 are arranged up and down at the closed tail end of the nacelle 1.

[0025] Preferably, a hub installation opening 4 is opened on the end face of the nacelle 1 at the hub installation end, and a tower barrel installation opening 5 is opened on the lower end face of the nacelle 1 at the position of the hub installation opening 4.

[0026] Preferably, the upper end face of the nacelle 1 at the closed tail end has a settlement installation cavity 6. The cooling system assembly 2 is fixedly installed in the settlement installation cavity 6. The nacelle 1 also has an equipment installation cavity 7 penetrating through the front and back. The motor assembly 3 is fixedly installed in the equipment installation cavity 7, and the cooling system assembly 2 is located above the motor assembly 3.

[0027] Preferably, the nacelle 1 has an installation contact surface 8 at the bottom of the settlement installation cavity 6. The installation contact surface 8 is in contact and cooperation with the lower end of the cooling system assembly 2 and the upper end of the motor assembly 3 respectively. The installation contact surface 8 is provided with an air inlet hole 9 and an air outlet hole 10.

[0028] Preferably, the nacelle 1 realizes nacelle air intake through the hub installation opening 4 and the tower barrel installation opening 5.

[0029] Preferably, auxiliary air inlet holes 11 communicating with the equipment installation cavity 7 are opened at both sides of the nacelle 1 at the closed tail end.

[0030] During actual use, the auxiliary air inlet holes 11 can be opened or closed according to the on-site needs.

[0031] The working principle of the present utility model is as follows:

[0032] Different from the traditional generator layout, the technical solution of the present application can separately set the cooling system component 2 and the motor component 3 into two modules while being able to cooperate with each other. The motor component 3 is fixedly installed inside the engine room 1, that is, in the equipment installation cavity 7. The cooling system component 2 is at the top of the engine room 1. That is, an inner concave area is constructed at the top of the engine room 1 to separately place the cooling system component 2. At the same time, corresponding air inlet holes 9 and air outlet holes 10 are opened on the installation contact surface 8, and the gaps are sealed. In this way, the outside air can directly enter the equipment installation cavity 7 through the filter cotton of the cooling system component 2 to exchange heat inside the motor.

[0033] In summary, the cooling system component 2 of the technical solution of the present application is arranged at the top of the engine room 1. Such a structure can effectively reduce the overall height of the engine room 1. At the same time, when the cooling system component 2 fails and needs to be maintained and replaced after long-term use, the maintenance personnel can directly carry out the disassembly work outside. The personnel operation space is large, and the crane is also more convenient during the lifting work. It can be seen that the technical solution of the present application can solve the problem that the air entering the motor originally has a higher internal air temperature than the outside natural temperature due to the heating of other components, such as the tower bottom converter, the gearbox wall surface, the control cabinet, the transformer, etc., so that the heat dissipation effect is not as good as the heat exchange effect of the outside air directly entering the motor.

[0034] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A semi-direct drive wind turbine cooling system, characterized in that: It includes a nacelle (1), a cooling system component (2) and an electric motor component (3). The cooling system component (2) and the electric motor component (3) are respectively fixedly installed on the nacelle (1). The cooling system component (2) and the electric motor component (3) are arranged vertically at one end of the nacelle (1). The cooling system component (2) cools the electric motor component (3), and the cooling system component (2) is fixedly installed at the upper end outside the nacelle (1).

2. The cooling system of a semi-direct drive wind turbine according to claim 1, wherein: One end of the nacelle (1) is a hub installation end, and the other end is a closed tail end. The cooling system component (2) and the electric motor component (3) are arranged vertically at the closed tail end of the nacelle (1).

3. The cooling system of a semi-direct drive wind turbine according to claim 2, wherein: The end face of the nacelle (1) at the hub installation end is provided with a hub installation opening (4), and the lower end face of the nacelle (1) at the hub installation opening (4) is provided with a tower barrel installation opening (5).

4. A semi-direct drive wind turbine cooling system according to claim 2, characterized in that: The upper end face of the nacelle (1) at the closed tail end has a settlement installation cavity (6). The cooling system component (2) is fixedly installed in the settlement installation cavity (6). The nacelle (1) also has a front-back through equipment installation cavity (7). The electric motor component (3) is fixedly installed in the equipment installation cavity (7), and the cooling system component (2) is located above the electric motor component (3).

5. A semi-direct drive wind turbine cooling system according to claim 4, characterized in that: The bottom of the nacelle (1) at the settlement installation cavity (6) has an installation contact surface (8). The installation contact surface (8) is in contact and cooperation with the lower end of the cooling system component (2) and the upper end of the electric motor component (3) respectively. The installation contact surface (8) is provided with an air inlet hole (9) and an air outlet hole (10).

6. A semi-direct drive wind turbine cooling system according to claim 3, characterized in that: The nacelle (1) realizes nacelle air intake through the hub installation opening (4) and the tower barrel installation opening (5).

7. A semi-direct drive wind turbine cooling system according to claim 2 or 4, characterized in that: On both sides of the nacelle (1) at the closed tail end, there are air inlet secondary openings (11) communicated with the equipment installation cavity (7).

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