WO2023272992A1

WO2023272992A1 - Nacelle assembly and wind turbine set

Info

Publication number: WO2023272992A1
Application number: PCT/CN2021/121862
Authority: WO
Inventors: 马加伟; 时洪奎
Original assignee: 新疆金风科技股份有限公司
Priority date: 2021-06-28
Filing date: 2021-09-29
Publication date: 2023-01-05
Also published as: CN113357090B; CN113357090A

Abstract

A nacelle assembly (100) for use in a wind turbine set. The wind turbine set comprises a tower (200) and a generator (400). The nacelle assembly (100) comprises: a connecting seat (10), the connecting seat being used to connect the tower (200) and the generator (400); nacelle units (20), there being multiple nacelle units (20) which are each disposed on the connecting seat (10), each nacelle unit (20) comprising a nacelle cover (21) and a functional device (22), the nacelle cover (21) being provided with an accommodation cavity (211), and the functional device (22) being at least partially located in the accommodation cavity (211) and being used for electrical connection with the generator (400). A wind turbine set comprises the described nacelle assembly (100). The nacelle assembly (100) can meet the high power requirements of a wind turbine set, and is beneficial for design, processing, and transmission.

Description

Nacelle assembly and wind turbine

Cross References to Related Applications

This application claims the priority of Chinese Patent Application No. 202110723412.8 filed on June 28, 2021, the entire content of which is incorporated herein by reference.

technical field

The present application relates to the technical field of wind power, in particular to a nacelle assembly and a wind power generating set.

Background technique

With the increasing capacity and power of wind turbines, the current solution for the nacelle assembly is to enlarge the size simultaneously. However, the continued enlargement of components such as the nacelle assembly will lead to excessive size and weight of related components. Due to the limitation of land transportation, the land-based unit will not be able to transport the large cabin assembly, or in order to meet the needs of land transportation, roads, toll stations, tunnels and bridges need to be rebuilt, which greatly increases the transportation cost, which in turn leads to wind power. The overall cost is rising rapidly. In addition to transportation, due to the continuous enlargement of the size of components, the difficulty of designing and processing components has also increased rapidly, which eventually led to a rapid increase in the cost of wind turbines.

Therefore, a new nacelle assembly and a wind power generating set are urgently needed.

Contents of the invention

The embodiment of the present application provides a nacelle assembly and a wind power generating set. The nacelle assembly can meet the high power requirement of the wind power generating set, and has low cost and is convenient for processing and transportation.

On the one hand, according to the embodiment of the present application, a nacelle assembly is proposed for a wind power generating set, the wind power generating set includes a tower and a generator, and the nacelle assembly includes: a connecting seat, which is used to connect the tower and the generator ; The nacelle unit, the number of the nacelle units is multiple and respectively arranged on the connection seat, each nacelle unit includes a nacelle cover and a functional device, the nacelle cover has a receiving cavity, the functional device is at least partly located in the receiving cavity and is used for electrical connection with the generator.

In another aspect, according to an embodiment of the present application, a wind power generating set is provided, including: a tower; the above-mentioned nacelle assembly, the nacelle assembly is arranged on the tower; a yaw system, connected to the tower and a connecting seat; a generator, It includes a rotationally matched rotor, a stator, and an interface electrically connected to the rotor and the stator. The stator is connected to the connecting seat, and the functional devices of each nacelle unit are electrically connected to the interface; the impeller is connected to the rotor.

According to the nacelle assembly and the wind power generating set provided by the embodiment of the present application, the nacelle assembly includes a connecting seat and a nacelle unit, the connecting seat is used to connect the tower and the generator, and the number of the nacelle units is multiple and connected to the connecting seat respectively, Since each nacelle cover has an accommodating cavity, and a functional device connected to the generator is installed in the accommodating cavity, the electrical energy converted by the generator can be post-processed by using the functional device, and the number and specifications of the nacelle units can be adjusted to meet the The high power demand of the generator, meanwhile, the nacelle unit can be processed, manufactured and transported separately, the cost is low, and it is beneficial to the overall design, processing and transportation of the nacelle assembly.

Description of drawings

The features, advantages, and technical effects of the exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

Fig. 1 is an axonometric view of a wind power generating set according to an embodiment of the present application;

Fig. 2 is a schematic cross-sectional structure diagram of a wind power generating set according to an embodiment of the present application;

Fig. 3 is an axonometric view of a nacelle assembly of an embodiment of the present application;

Fig. 4 is a structural schematic view of the nacelle assembly with the protective cover removed according to one embodiment of the present application;

Fig. 5 is a schematic diagram of a partial structure of a nacelle assembly according to an embodiment of the present application;

Fig. 6 is a schematic structural view of a nacelle assembly according to another embodiment of the present application.

in:

100. Engine room assembly;

10. Connecting seat; 11. Seat body; 12. First free end; 13. Second free end; 14. Engine room interface;

20. Engine room unit;

21. Nacelle cover; 211. Accommodating cavity;

22. Functional device; 221. Converter; 222. Transformer; 223. Environmental control system;

23. Support frame; 231. Horizontal profile; 232. Vertical profile;

30. Protective cover; 40. Control cabinet;

200, tower;

300, impeller; 310, hub; 320, blade;

400, generator; 410, rotor; 420, stator;

aa, center line.

In the figures, the same parts are given the same reference numerals. The figures are not drawn to scale.

detailed description

Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application. In the drawings and the following description, at least some well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may have been exaggerated. Furthermore, the features, structures, or characteristics described hereinafter may be combined in any suitable manner in one or more embodiments.

The orientation words appearing in the following description are all directions shown in the figure, and are not intended to limit the specific structure of the nacelle assembly and the wind power generating set of the present application. In the description of this application, it should also be noted that unless otherwise specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or Connected integrally; either directly or indirectly. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

As shown in Figure 1 and Figure 2, the embodiment of the present application provides a wind power generating set, including a tower 200, a nacelle assembly 100, a yaw system (not shown), a generator 400 and an impeller 300, and the nacelle assembly 100 Set on the tower 200. In order to meet the yaw requirement of the nacelle assembly 100, the yaw system is connected between the tower 200 and the nacelle assembly 100, so that the nacelle assembly 100 is indirectly connected to the tower 200 through the yaw system. The generator 400 includes a rotationally fitted rotor 410, a stator 420, and an interface electrically connected to the rotor 410 and the stator 420. The stator 420 is connected to the nacelle assembly 100, and the impeller 300 is connected to the rotor 410. Optionally, the impeller 300 includes a hub 310 and The blade 320 and the impeller 300 are connected with the rotor 410 of the generator 400 through the hub 310 .

With the increasing capacity and power of wind turbines, the current solution for the nacelle assembly of wind turbines is to enlarge the size simultaneously. However, the continued enlargement of components such as the nacelle assembly will lead to excessive size and weight of related components. Due to the limitation of land transportation, the land crew will not be able to transport the large cabin assembly. In addition to transportation, due to the continuous enlargement of the size of components, the difficulty of designing and processing components has also increased rapidly, which eventually led to a rapid increase in the cost of wind turbines.

Based on the above technical problems, the embodiment of the present application also provides a new nacelle assembly 100, which can meet the high power requirements of wind turbines, and is convenient for design, processing and transportation. The nacelle assembly 100 can be produced and sold as an independent component, and of course it can also be used in a wind power generating set as a component of the wind generating set.

As shown in FIGS. 3 to 5 , the nacelle assembly 100 provided by the embodiment of the present application includes a connecting seat 10 and a nacelle unit 20 , and the connecting seat 10 is used for connecting the tower 200 and the generator 400 . The number of cabin units 20 is multiple and are respectively arranged on the connecting seat 10. Each cabin unit 20 includes a cabin cover 21 and a functional device 22. The cabin cover 21 has a receiving cavity 211. The functional device 22 is at least partially located in the receiving cavity 211 and is used to communicate with the The generator 400 is electrically connected, and the functional device 22 can post-process the electric energy converted by the generator.

When the nacelle assembly 100 provided by the embodiment of the present application is used in a wind power generating set, the functional devices 22 of each nacelle unit 20 can be electrically connected to the interface of the generator 400 . Since each nacelle cover 21 has an accommodating cavity 211, and a functional device 22 connected to the generator 400 is arranged in the accommodating cavity 211, the electrical energy converted by the generator 400 can be post-processed by using the functional device 22, and the generator can meet the 400 high power requirements, and at the same time the nacelle unit 20 can be processed and manufactured separately, the cost is low and it is convenient for processing and transportation.

As an optional implementation manner, in the nacelle assembly 100 provided in the embodiment of the present application, the functional device 22 thereof includes at least one of a transformer 222 and a converter 221 . It may include a transformer 222, and may also include a converter 221. Certainly, in some embodiments, the transformer 222 and the converter 221 may also be included at the same time. The transformer 222 and the converter 221 of each functional device 22 are electrically connected to the generator 400 . The transformer 222 can be used to change the AC voltage (current) of a certain value of the generator 400 into another voltage (current) with the same frequency or several different values (current). As for the converter 221 , the converter 221 may be added to the excitation device on the side of the rotor 410 of the generator 400 . Its main function is to control the amplitude, phase and frequency of the excitation through the converter 221 when the speed n of the rotor 410 changes, so that the stator 420 side can input constant frequency power to the grid. When the functional device 22 includes a transformer 222 and a converter 221, the electric energy converted by the generator 400 can first enter the converter 221, then from the converter 221 to the transformer 222, and then enter the step-up station and the subsequent power grid .

In some optional embodiments, the nacelle assembly 100 provided by the embodiment of the present application, the connecting seat 10 includes a seat body 11 and a hollow cavity formed by the seat body 11, the seat body 11 has a first free end 12, a second Two free ends 13 and a plurality of nacelle interfaces 14 at least partially located between the first free end 12 and the second free end 13 . The first free end 12 is used for connecting with the tower 200 , the second free end 13 is used for connecting with the generator 400 , and each nacelle unit 20 is connected to one of the nacelle interfaces 14 .

The connection seat 10 adopts the above-mentioned structural form, and can meet the connection requirements with each cabin unit 20 by using the cabin interface 14 . The correspondingly provided first free end 12 can be connected to the tower 200 , and the second free end 13 can be connected to the generator 400 to meet the connection requirements of each nacelle unit 20 with the tower 200 and the generator 400 .

As an optional implementation mode, the first free end 12 of the nacelle assembly 100 provided in the embodiment of the present application can adopt an annular flange structure. By adopting the first free end 12 in the form of an annular flange structure, it can facilitate the Detachable connection between assembly 100 and tower 200 .

Optionally, in the nacelle assembly 100 provided in the embodiment of the present application, the second free end 13 may adopt an annular flange structure. Since the second free end 13 needs to be connected with the stator 420 of the generator 400, by adopting the annular method The flange structure facilitates the detachable connection between the second free end 13 and the stator 420 of the generator 400, ensures the connection strength between the two, and is convenient for assembly, disassembly and maintenance.

In some optional embodiments, the axis of the first free end 12 and the axis of the second free end 13 are arranged to intersect. The connection between the tower 200 and the generator 400 can be realized according to the distribution of the two.

Optionally, in the nacelle assembly 100 provided in the embodiment of the present application, the number of nacelle interfaces 14 can be set according to the number of nacelle units 20 , as long as the connection requirements with each nacelle unit 20 can be met.

Optionally, in the nacelle assembly 100 provided in the embodiment of the present application, the nacelle cover 21 of each nacelle unit 20 can adopt different shapes, which have accommodating cavities 211 and can satisfy the installation of functional devices 22 and direct contact with the connecting seat 10. Or indirect connection requirements are available. In some optional embodiments, the nacelle cover 21 may adopt a hollow box structure. In some optional embodiments, it may adopt a hollow square structure.

In some optional embodiments, in the nacelle assembly 100 provided in the embodiment of the present application, each nacelle unit 20 further includes an environmental control system 223, and the environmental control system 223 is configured to adjust the temperature, humidity and air in the accommodating chamber 211. at least one of the salt in the By making each cabin unit 20 include an environment control system 223, the environment control system 223 can be used to adjust at least one of the temperature, humidity and salinity of the internal environment of the accommodation chamber 211 corresponding to the cabin unit 20, so that the environment in the accommodation chamber 211 The environment is always within the preset range to avoid damage to the functional device 22 due to the value of at least one of temperature, humidity and salinity exceeding the preset range, improve the safety and service life of the cabin assembly 100, and reduce Maintenance costs.

As an optional implementation mode, in the nacelle assembly 100 provided in the embodiment of the present application, the environmental control system 223 includes a heat dissipation device, which is arranged on the nacelle cover 21 and configured to adjust the temperature in the accommodating chamber 211 so that each The temperature in the accommodating cavity 211 of each cabin unit 20 is moderate, so as to avoid damage to the functional devices 22 caused by excessive temperature.

In some optional examples, the environmental control system 223 may also include a dehumidifier, which is arranged on the nacelle cover 21 and configured to adjust the humidity in the accommodation chamber 211. The humidity in the chamber 211 can always be kept at the lowest level, so as to prevent the functional devices 22 from being corroded or even short-circuited at the connection interface between the functional devices 22 or between the functional devices 22 and the generator 400 due to excessive humidity.

As an optional implementation, the environmental control system 223 may also include a desalter, which is arranged on the nacelle cover 21 and is configured to adjust the salt content in the air in the accommodating cavity 211 to prevent the accommodating of each nacelle unit 20 Excessive salt content in the cavity 211 leads to corrosion of the functional device 22 and protects the functional device 22 .

In some optional embodiments, in the embodiment provided by this application, each nacelle unit 20 can install and support the functional device 22 through the nacelle cover 21 itself, and at the same time be directly connected to the connecting seat 10 through the nacelle cover 21, of course this is An optional embodiment.

In some other examples, each nacelle unit 20 may also include a support frame 23, the support frame 23 is arranged in the accommodating cavity 211 and connected with the nacelle cover 21, the support frame 23 is at least partially protruded from the nacelle cover 21 and set and Connect with the cabin interface 14. The nacelle assembly 100 provided in the embodiment of the present application can increase the overall strength of the nacelle unit 20 by providing a support frame 23 inside each nacelle unit 20 and connecting it to the nacelle cover 21 . To ensure its anti-load capacity and improve the safety performance of the nacelle assembly 100 . Moreover, by setting the support frame 23 at least partially protruding from the nacelle cover 21 and connecting it to the nacelle interface 14, the connection requirements between the nacelle unit 20 and the nacelle interface 14 can be ensured, and the entire wall of the nacelle cover 21 can be Making it thicker and thinner can reduce the overall weight and cost of the nacelle cover 21 , and at the same time, can reduce the risk of damage to the nacelle cover 21 caused by the direct connection of the nacelle cover 21 to the nacelle interface 14 .

In some optional embodiments, in the nacelle assembly 100 provided in the embodiment of the present application, the supporting frame 23 may adopt a hollow frame structure, which has high strength, light weight and low cost. Optionally, the supporting frame 23 may be composed of criss-cross profiles connected, and part of the profiles may protrude from the nacelle cover 21 and be connected to the nacelle interface 14 .

In some optional embodiments, the support frame 23 may include a plurality of longitudinal profiles 232 and a plurality of transverse profiles 231, the plurality of longitudinal profiles 232 are distributed at intervals along the extending direction of the transverse profiles 231, and the plurality of transverse profiles 231 are The extending direction is distributed at intervals, and each transverse profile 231 intersects with each longitudinal profile 232 and is connected to each other.

As an optional implementation mode, in the nacelle assembly 100 provided in the embodiment of the present application, one of the nacelle interface 14 and the support frame 23 includes a plug-in protrusion, and the other includes a plug-in slot, and the plug-in protrusion and the plug-in slot The shape of the slots matches and plugs into the connection. The above connection method between the nacelle interface 14 and the support frame 23 facilitates the disassembly and assembly of the nacelle unit 20 and the base, and at the same time ensures the connection strength between the two.

Optionally, the cabin interface 14 can be made to include a plurality of connection blocks, and each connection block is provided with an insertion slot, so that the support frame 23 is provided with an insertion protrusion, by inserting the insertion protrusion into the insertion slot Realize the connection between the connection seat 10 and the contact interface.

Optionally, when the supporting frame 23 includes longitudinal profiles 232, at least a part of the longitudinal profiles 232 may protrude from the nacelle cover 21 and form insertion protrusions.

It can be understood that, it is not limited to provide insertion protrusions on the support frame 23, and provide insertion grooves on the cabin interface 14. In some other embodiments, the insertion grooves can also be formed on the support frame 23, The insertion protrusion is formed on the nacelle interface 14 , as long as it can meet the connection requirements between the support frame 23 and the nacelle interface 14 .

As an optional implementation mode, in the nacelle assembly 100 provided in the embodiment of the present application, the functional devices 22 of each nacelle unit 20 such as the transformer 222, the converter 221 and the environment control system 223 can be combined with the nacelle cover 21 connect. Of course, in some embodiments, components such as the functional device 22 and the environmental control system 223 can also be arranged on the support frame 23. Since the support frame 23 is located at the nacelle cover 21, the support frame 23 can be placed horizontally, and can be placed toward the functional device 22 and The environmental control system 223 and the like provide a horizontal support surface, which facilitates the assembly and disassembly of the functional device 22 and the environmental control system 223 . Moreover, when the supporting frame 23 adopts a hollow frame structure, disposing the functional device 22 and the environmental control system 223 on the supporting frame 23 is also beneficial to heat dissipation of the functional device 22 and other components, and improves the safety performance of the nacelle unit 20 .

As an optional implementation, since the nacelle assembly 100 works outdoors when it is used in a wind power generating set, in order to protect the connecting seat 10 and avoid damage to the connecting seat 10 caused by natural factors such as rainwater outside, the nacelle assembly The unit 100 also includes a protective cover 30 , the protective cover 30 is arranged to cover the connection seat 10 , and the protective cover 30 is provided with an escape opening corresponding to each cabin unit 20 . By arranging the protective cover 30, the connection seat 10 can be protected, which can prevent the wind, frost, snow and rain in the natural environment from corroding the connection seat 10, and at the same time prevent rainwater from entering the generator 400, the tower 200 and other equipment through the connection seat 10. interior, improving the safety performance of the nacelle assembly 100 and the wind power generating set.

As an optional implementation mode, in the nacelle assembly 100 provided in the embodiment of the present application, the protective cover 30 can adopt various structural forms, which can be a hollow shell structure, and the protective cover 30 is arranged to cover the connecting seat 10, The protective cover 30 can be connected with the connection base 10 , and can prevent the connection between the connection base 10 and the nacelle unit 20 , the tower 200 and the generator 400 from interfering.

As an optional implementation, the implementation of the present application further includes a control cabinet 40, the functional device 22 of at least one cabin unit 20 is electrically connected to the control cabinet 40, and the corresponding functional device 22 is controlled through the control cabinet 40. Optionally, the control cabinet 40 can be arranged inside the protective cover 30 .

It can be understood that, in the nacelle assembly 100 provided by the above-mentioned embodiments of the present application, the connection between the nacelle unit 20 and the nacelle interface 14 is to adopt one including a plug-in protrusion, and the other includes a plug-in slot, and the plug-in slot The connecting protrusion matches the shape of the socket slot and is plugged and connected. This is an optional implementation mode, but is not limited to the above-mentioned mode. In some other embodiments, the cabin interface 14 may also include a first flange, the support frame 23 may include a second flange, the first flange and The shapes of the second flanges are matched and connected to each other, which can also meet the connection requirements between each nacelle unit 20 and the connecting seat 10 .

In the nacelle assembly 100 provided by the above-mentioned embodiments of the present application, the number of nacelle units 20 included therein can be set according to the power demand of the applied wind power generating set.

Exemplarily, when the wind power generating set applied to the nacelle assembly 100 is a 6MW unit, the nacelle assembly 100 may include two nacelle units 20, and the functional device 22 of each nacelle unit 20 can convert the generator 400 The post-processing upper limit of electric energy is 3MW, and the two 3MW nacelle units 20 can meet the post-processing requirements of the generator 400 of the 6MW generating set to convert electric energy, thereby satisfying the power demand of the 6MW generating set.

For another example, when the wind power generating set applied to the nacelle assembly 100 is a 7.5MW unit, the nacelle assembly 100 can also include two nacelle units 20, and the functional device 22 of one nacelle unit 20 can control the generator 400. The post-processing upper limit of the converted electric energy is 3MW, and the functional device 22 of the other nacelle unit 20 can post-process the converted electric energy of the generator 400 up to 4.5MW, thereby meeting the power demand of the 7.5MW unit.

As another example, when the wind power generating set applied to the nacelle assembly 100 is a 14MW unit, the nacelle assembly 100 can include three nacelle units 20, and the functional device 22 of one nacelle unit 20 can convert the electrical energy of the generator 400 The post-processing upper limit of the engine room unit 20 is 8MW, and the functional device 22 of the other nacelle unit 20 can convert the electrical energy of the generator 400. The upper limit of post-processing is 1.5MW, which can meet the power demand of 14MW units.

Since the upper limit of post-processing of the functional device 22 is lower, its cost, processing difficulty, and transportation difficulty are relatively low, and the higher the post-processing upper limit, its cost, processing difficulty, and transportation difficulty will be doubled. If the existing nacelle assembly 100 is used to form a 14MW unit, then the post-processing upper limit of the functional device 22 of the nacelle assembly 100 for post-processing the electric energy converted by the generator 400 will be 14MW, which will result in a The volume of the functional devices 22 such as the cover 21 , the converter 221 , and the transformer 222 is very large, and the requirements for transportation, production and processing are very high. However, the nacelle assembly 100 provided by the embodiment of the present application is in the form of a plurality of nacelle units 20 with post-processing functions, which can meet the high power demand of the wind power generating set.

It can be understood that the number of cabin units 20 included in the 6MW unit, 7.5MW unit, and 14MW unit corresponding to the examples above and the limitation on the upper limit of post-processing are just an optional implementation, but not The method is limited to the above, and can be adjusted as needed.

As an optional implementation mode, in the cabin assembly 100 provided in the embodiment of the present application, the connecting seat 10 has an axisymmetric structure and has a center line aa, and the number of cabin units 20 is n; where n is greater than or equal to 2 In an even number, n cabin units 20 are divided into two unit groups, each unit group includes at least one cabin unit 20, and the two unit groups are symmetrically distributed on both sides of the central line aa. Through the above arrangement, the load borne by the connection base 10 can be balanced, and the base can be prevented from bearing unbalanced load.

Exemplarily, taking two cabin units 20 as an example, each unit group may include one cabin unit 20 , and two cabin units 20 are symmetrically distributed on both sides of the central line aa.

For another example, as shown in Figures 3 to 5, taking the number of cabin units 20 as 4 as an example, each group of unit groups can be made to include 2 cabin units 20, wherein the cabin unit 20 of one group of unit groups is connected with another group of unit groups. The cabin units 20 of the unit group are symmetrically distributed on both sides of the central line aa.

It can be understood that when the number of cabin units 20 is n, it is only an optional implementation manner that n is an even number.

As shown in FIG. 6, in some other examples, n may also be an odd number. n is an odd number greater than 2, n-1 cabin units 20 are divided into two groups of units, each group of units includes at least one cabin unit 20, and the two groups of units are symmetrically distributed on both sides of the central line aa, leaving one cabin unit 20 It is connected to the area where the connection base 10 is located between the two groups of units. Through the above setting, when n is an odd number, the load borne by the base can be better balanced, and the base can be prevented from bearing unbalanced loads.

Exemplarily, as shown in FIG. 6, taking the number of cabin units 20 as an example of five, four cabin units 20 can be divided into two groups of units, each group of unit groups includes two cabin units 20, wherein one group of units The two cabin units 20 of one group and the two cabin units 20 of another unit group are symmetrically distributed on both sides of the center line aa, and the remaining one cabin unit 20 is connected to the connecting seat 10 in the area between the two groups of units, optional Accordingly, the center of the remaining one cabin unit 20 can be located on the center line aa, further preventing the connecting seat 10 from bearing unbalanced load.

It can be understood that the arrangement of the above-mentioned plurality of cabin units 20 on the connecting seat 10 is only an optional way, and is not limited to the above-mentioned way. The racks are arranged at intervals in the axial direction, and the projections of each other in the axial direction may at least partially overlap, of course, they may also be arranged in a staggered manner, whichever meets the performance requirements of the nacelle assembly 100 .

As an optional implementation manner, the generator 400 of the wind power generating set provided in the embodiment of the present application may include multiple windings, and each winding is electrically connected to the functional device 22 of one of the nacelle units 20 through an interface. Through the above arrangement, the electrical connection between the nacelle unit 20 and the generator 400 can be more facilitated, and the post-processing requirements for the electric energy converted by the generator 400 can be met.

In the nacelle assembly 100 provided in the embodiment of the present application, the connecting seat 10 is used to connect the tower 200 and the generator 400, and the number of the nacelle units 20 is multiple and connected to the connecting seat 10 respectively. It has an accommodating chamber 211, and a functional device 22 connected to the generator 400 is arranged in the accommodating chamber 211, and the electric energy converted by the generator 400 can be post-processed by using the functional device 22, and the quantity and specifications of the nacelle units 20 can be adjusted to meet the The high power demand of the generator 400 and the nacelle unit 20 can be manufactured and transported separately, which is beneficial to the processing and transportation of the nacelle assembly 100 as a whole.

However, the wind power generating set provided by the embodiments of the present application includes the nacelle assembly 100 provided by the above embodiments, and on the basis of meeting its own high power requirements, it is low in production and transportation costs, easy to maintain, and high in power generation efficiency.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

A nacelle assembly (100), used for a wind power generating set, the wind power generating set including a tower (200) and a generator (400), wherein the nacelle assembly (100) includes:

A connecting seat (10), the connecting seat (10) is used to connect the tower (200) and the generator (400);

A cabin unit (20), the number of the cabin units (20) is multiple and respectively arranged on the connecting seat (10), each of the cabin units (20) includes a cabin cover (21) and a functional device (22 ), the nacelle cover (21) has an accommodating cavity (211), the functional device (22) is at least partially located in the accommodating cavity (211) and is used for electrical connection with the generator (400).
The nacelle assembly (100) according to claim 1, wherein the functional device (22) of each nacelle unit (20) includes at least one of a converter (221) and a transformer (222) .
The nacelle assembly (100) according to claim 1, wherein each nacelle unit (20) further comprises an environmental control system (223), and the environmental control system (223) is configured to adjust the accommodating cavity (211) at least one of temperature, humidity and salinity in the air.
The nacelle assembly (100) according to claim 3, wherein the environmental control system (223) includes at least one of a radiator, a dehumidifier and a desalter, wherein,

The heat dissipation device is configured to adjust the temperature in the accommodation cavity (211);

The dehumidifier is configured to adjust the humidity in the containing cavity (211);

The desalter is configured to adjust the salt in the air in the containing chamber (211).
The nacelle assembly (100) according to any one of claims 1 to 4, wherein the connecting seat (10) comprises a seat body (11) and a hollow cavity enclosed by the seat body (11), The seat body (11) has a first free end (12), a second free end (13) and multiple holes at least partially located between the first free end (12) and the second free end (13). a nacelle interface (14), the first free end (12) is used for connecting with the tower (200), and the second free end (13) is used for connecting with the generator (400), each Each of the cabin units (20) is connected to one of the cabin interfaces (14).
The nacelle assembly (100) according to claim 5, wherein each nacelle unit (20) further comprises a support frame (23), and the support frame (23) is arranged in the accommodating cavity (211) And connected with the nacelle cover (21), the support frame (23) at least partially protrudes from the nacelle cover (21) and is connected with the nacelle interface (14).
The nacelle assembly (100) according to claim 6, wherein one of the nacelle interface (14) and the support frame (23) includes a plug-in protrusion, and the other includes a plug-in slot, and the The insertion protrusion matches the shape of the insertion groove and is connected by insertion.
The nacelle assembly (100) according to claim 6, wherein the nacelle interface (14) includes a first flange, the support frame (23) includes a second flange, the first flange and the The shape of the second flange matches and connects with each other.
The nacelle assembly (100) according to claim 6, wherein the support frame (23) is a hollow frame structure.
The nacelle assembly (100) according to claim 9, wherein the support frame (23) comprises a plurality of longitudinal profiles (232) and a plurality of transverse profiles (231), and the plurality of longitudinal profiles (232) are The extending direction of the transverse profiles (231) is distributed at intervals, a plurality of the transverse profiles (231) are distributed at intervals along the extending direction of the longitudinal profiles (232), and each of the transverse profiles (231) is connected to each of the longitudinal profiles (231). Profiles (232) are arranged intersecting and interconnected.
The nacelle assembly (100) according to claim 5, wherein the first free end (12) comprises a first annular flange, and the first annular flange is adapted to be compatible with the tower (200) For detachable connection, the second free end (13) includes a second annular flange, and the second annular flange is used for detachable connection with the generator (400).
The nacelle assembly (100) according to Claim 6, wherein the functional device (22) is connected to the support frame (23) or the nacelle cover.
The nacelle assembly (100) according to any one of claims 1 to 4, wherein the nacelle assembly (100) further comprises a protective cover (30), and the protective cover (30) covers the connecting seat (10) setting, the protective cover (30) is provided with an escape opening corresponding to each of the cabin units (20).
The nacelle assembly (100) according to any one of claims 1 to 4, wherein the connecting seat (10) is an axisymmetric structure and has a centerline (aa), and the number of the nacelle units (20) is n;

Wherein, n is an even number greater than or equal to 2, and the n said cabin units (20) are divided into two groups of unit groups, each group of said unit groups includes at least one cabin unit (20), and said two groups of said unit groups are symmetrically distributed in said on both sides of the center line (aa).
The nacelle assembly (100) according to any one of claims 1 to 4, wherein the connecting seat (10) is an axisymmetric structure and has a centerline (aa), and the number of the nacelle units (20) is n;

Wherein, n is an odd number greater than 2, n-1 said cabin units (20) are divided into two groups of unit groups, each group of said unit groups includes at least one cabin unit (20), and said unit groups of two groups are symmetrically distributed in On both sides of the central line (aa), the remaining one cabin unit (20) is connected to the area where the connecting seat (10) is located between two sets of the unit groups.
The nacelle assembly (100) according to any one of claims 1 to 4, wherein the nacelle assembly (100) further comprises a control cabinet (40), the functional device ( 22) It is electrically connected with the control cabinet (40).
A wind turbine, comprising:

tower (200);

The nacelle assembly (100) according to any one of claims 1 to 16, wherein the nacelle assembly (100) is arranged on the tower (200);

a yaw system, connected to the tower (200) and the connecting seat (10);

The generator (400) includes a rotor (410), a stator (420) that rotates, and an interface that is electrically connected to the rotor (410) and the stator (420), and the stator (420) is connected to the connecting seat ( 10), the functional devices (22) of each of the cabin units (20) are electrically connected to the interface;

The impeller (300) is connected to the rotor (410).
The wind power generating set according to claim 17, wherein the generator (400) comprises a plurality of windings, each of the windings communicates with the functional device ( 22) Electrical connection.