CN117823361A - Wind generating set - Google Patents

Abstract

The application relates to a wind generating set, which comprises a cabin, a hub and an induced air part, wherein the cabin comprises a cabin cover, an air inlet and a first air outlet are arranged on the cabin cover, and the first air outlet and the air inlet are distributed at intervals; the hub is connected with the engine room, and a second air outlet is formed in the hub; the air inducing piece is arranged at the first air outlet, and natural wind outside the cabin cover can drive the air inducing piece to rotate and suck the inner cavity of the cabin cover, so that a first air flow and a second air flow are formed at the air inlet under the action of negative pressure; the first air flow flows through the engine room and is discharged from the first air outlet, and the second air flow flows through the hub and is discharged from the second air outlet. The embodiment of the application provides a wind generating set, can form the air current flow with outside natural wind effect, can dispel the heat to cabin and wheel hub simultaneously, avoided electric energy drive, saved the electricity cost when dispelling the heat.

Description

Wind generating set

Technical Field

The application relates to the technical field of wind power generation, in particular to a wind generating set.

Background

Along with the continuous increase of the capacity of the wind generating set, the heat dissipation capacity and heat dissipation components in the machine head are also continuously increased, so that the rationality, reliability and economy of the design of the heat dissipation system have important influence on the low-cost development of the wind generating set and the safe operation of the set.

The heat dissipation layout design of the whole machine head of the existing machine set is mainly concentrated in the machine room, and the air flow disturbance in the machine set is often formed through the operation of a fan aiming at the heat dissipation device of the machine room, or the temperature of the machine room is controlled through an air-water heat exchanger, an air-air heat exchanger and the like.

However, there is generally no heat dissipating device for rotating parts such as hubs, and in the prior art, the air flow is driven by electric energy, so that the heat dissipating cost is high due to self-power consumption, but if the heat in the cabin and the hubs is not timely discharged, the service life and the safety and the reliability of the device are affected.

Disclosure of Invention

The embodiment of the application provides a wind generating set, can form the air current flow with outside natural wind effect, can dispel the heat to cabin and wheel hub simultaneously, reduced electric energy drive, saved the electricity cost when dispelling the heat.

According to the embodiment of the application, the wind generating set comprises a cabin, a hub and an induced air piece, wherein the cabin comprises a cabin cover, an air inlet and a first air outlet are formed in the cabin cover, and the first air outlet and the air inlet are distributed at intervals; the hub is connected with the engine room, and a second air outlet is formed in the hub; the air inducing piece is arranged at the first air outlet, and natural wind outside the cabin cover can drive the air inducing piece to rotate and suck the inner cavity of the cabin cover, so that a first air flow and a second air flow are formed at the air inlet under the action of negative pressure; the first air flow flows through the engine room and is discharged from the first air outlet, and the second air flow flows through the hub and is discharged from the second air outlet.

According to one aspect of the embodiment of the application, the air inlet and the first air outlet are oppositely arranged at two sides of the cabin cover, and the first air flow penetrates through the cabin and is discharged.

According to an aspect of the embodiment of the application, the cabin cover comprises a top plate and a bottom plate which are oppositely arranged in the height direction of the cabin cover, the air inlet is arranged on the bottom plate, the first air outlet is arranged on the top plate, and the air inducing piece is located outside the cabin cover and connected to the top plate, so that the first air flow flows from the bottom plate to the top plate along the height direction.

According to an aspect of the embodiments of the present application, the wind turbine generator system includes a main shaft device disposed in the nacelle cover and connected to the hub, and the second air flow sequentially passes through the main shaft device and the hub and is discharged from the second air outlet.

According to an aspect of the embodiment of the present application, the spindle device includes a rotating shaft and is connected to the hub through the rotating shaft, the rotating shaft is of a hollow shaft structure and has a cavity penetrating along an axial direction of the rotating shaft, a vent hole is provided in the rotating shaft and is communicated with the cavity, and the second air flow enters the cavity through the vent hole and flows to the hub and is discharged.

According to an aspect of the embodiments of the present application, the spindle device includes a fixing member and a connecting member connected between the rotating shaft and the fixing member, a ventilation gap is formed between the rotating shaft and the fixing member, the fixing member has a diversion hole and is communicated with the ventilation gap, and the second air flow sequentially flows through the ventilation gap, the connecting member and the ventilation hole through the diversion hole and then enters the cavity.

According to an aspect of the embodiments of the present application, the wind generating set further includes a flow guiding channel, one end of the flow guiding channel is connected to the air inlet, and the other end of the flow guiding channel is connected to the flow guiding hole, and the second air flow enters the ventilation gap after flowing through the flow guiding channel.

According to an aspect of embodiments of the present application, the wind power generation set further comprises a first deflector disposed at the deflector aperture, the first deflector being configured to direct the second airflow through the deflector aperture into the ventilation gap.

According to one aspect of the embodiments of the present application, the hub has a receiving cavity, the hub is connected to the shaft and the receiving cavity is in communication with the cavity, and the second air flow flows from the cavity to the receiving cavity and then is discharged from the second air outlet.

According to one aspect of the embodiments of the present application, the hub has a second air outlet extending axially therethrough, and the second air flow is discharged axially through the cavity, the receiving cavity and the second air outlet in sequence.

According to an aspect of the embodiments of the present application, the wind power generator set further comprises a second flow guiding member disposed at the second air outlet, the second flow guiding member being configured to guide the second air flow to be discharged from the accommodating cavity through the second air outlet.

According to one aspect of an embodiment of the application, the hub comprises a connection plate, the connection plate is provided with a manhole opening, and the second flow guiding piece is connected with the connection plate and is arranged at intervals with the manhole opening.

According to an aspect of the embodiments of the present application, the wind power generator set further comprises a check member provided at least one of the first air outlet and the second air outlet, the check member being configured to be opened when the air flow flows inside-out in the nacelle cover or to be closed when the air flow is stationary.

According to an aspect of the embodiments of the present application, the check member includes a movable member having a fixed portion and a rotating portion, the movable member is connected to the air outlet through the fixed portion, and the rotating portion is connected to the fixed portion and is capable of rotating relative to the fixed portion.

According to one aspect of an embodiment of the present application, the check member comprises more than two movable members arranged side by side and having a first state and a second state;

in the first state, a through-flow port is formed between the rotating part of any movable piece and the fixed part of the adjacent movable piece, and air flow can be discharged through the through-flow port;

in the second state, the rotating part of any movable part is lapped on the fixed part of the adjacent movable part, so that the movable part seals the air outlet.

According to an aspect of the embodiment of the application, the induced air piece includes induced air wheel and induced air pipe, and the induced air piece passes through the induced air pipe and is connected with first air outlet, and the induced air wheel sets up on the induced air pipe, and the induced air wheel can be relative induced air pipe rotation so that first air current is discharged through the induced air pipe.

According to one aspect of the embodiment of the application, the wind-guiding wheel comprises a central shaft and wind-guiding blades which are arranged around the central shaft in sequence in the circumferential direction, the central shaft is inserted into the wind-guiding pipe, the wind-guiding blades which are arranged adjacently are staggered with each other, and natural wind can drive the wind-guiding blades to rotate so that the wind-guiding wheel rotates around the central shaft.

According to an aspect of the embodiment of the application, the wind generating set further comprises a guide cover, wherein the guide cover is arranged to cover the hub and has an air outlet gap with the hub, and the second air flow discharged from the second air outlet is discharged through the air outlet gap;

and/or the wind generating set further comprises a blocking piece, wherein the blocking piece is arranged at the air inlet to separate the air inlet to form a first air flow and a second air flow;

and/or, the wind generating set further comprises a filter piece, the filter piece is arranged at the air inlet and is configured to filter impurities in the first air flow and the second air flow.

According to the wind generating set, the first air outlet is formed in the cabin cover, the second air outlet is formed in the hub, so that the formed first air flow and second air flow are discharged from the two air outlets respectively, the cabin and the hub are cooled simultaneously, the air guiding piece is arranged, the principle that negative pressure is formed in the inner cavity of the cabin cover due to the fact that the air guiding piece is matched with external natural wind to rotate is utilized, the external air flow enters the cabin, the first air flow and the second air flow are formed, a natural driving mode is adopted, the air flow is formed under the driving of electric energy, and finally, on the basis that the cabin and the hub are cooled simultaneously, the whole electricity cost is saved. In addition, the air flow formed by the rotation of the induced air part can be increased along with the increase of the external wind speed, and is positively correlated with the unit capacity and the heat dissipation requirement, so that the driving mode and the unit capacity and the heat dissipation requirement form self-adaptive matching under the control of an electronic control system, and the setting of an electronic control device is reduced.

Drawings

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

FIG. 1 is a schematic heat dissipation diagram of a wind turbine generator system according to an embodiment of the present application;

FIG. 2 is a schematic heat dissipation diagram of another wind turbine generator system according to an embodiment of the present application;

FIG. 3 is a schematic view of the structure of the check of the embodiment of the present application in a first state;

FIG. 4 is a schematic view of the structure of the check of the embodiment of the present application in a second state;

FIG. 5 is a schematic structural view of an air intake according to an embodiment of the present application;

fig. 6 is a top schematic view of an induced draft according to an embodiment of the present application.

Reference numerals:

100-wind generating set;

101-a first gas stream; 102-a second gas stream; m-a first state; an N-second state;

10-a cabin; 11-a nacelle cover; 12-top plate; 13-a bottom plate;

1-a first air outlet; 2-a second air outlet; 3-an air inlet; 4-ventilation holes; 5-deflector holes; 6-a diversion channel; 7-a first flow guide; 8-a second flow guide; 9-an air outlet gap;

20-a hub; 21-connecting plates; 22-a receiving cavity;

30-an induced air piece; 31-an induced draft wheel; 32-an induced draft tube; 33-central axis; 34-induced air blades;

40-spindle means; 41-a rotating shaft; 42-cavity; 43-fixing piece; 44-a connector; 45-ventilation gap;

50-check; 51-moving part; 52-a fixing part; 53-a rotating part; 54-a through-flow port;

60-a guide cover; 70-a barrier; 80-filter element.

In the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.

Detailed Description

Features and exemplary embodiments of various aspects of the present application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present 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 merely intended to provide a better understanding of the present application by showing an example of the present application. In the drawings and the following description, at least some well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present application; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The directional terms appearing in the following description are all directions shown in the drawings, and are not intended to limit the specific structure of the wind turbine generator set of the present application. In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected. The specific meaning of the terms in the present application can be understood as appropriate by one of ordinary skill in the art.

For a better understanding of the present application, a wind turbine generator set according to an embodiment of the present application will be described in detail below with reference to fig. 1 to 6.

Referring to fig. 1, a wind generating set 100 provided in the embodiments of the present application includes a nacelle 10, a hub 20, and an induced air member 30, where the nacelle 10 includes a nacelle cover 11, an air inlet 3 and a first air outlet 1 are disposed on the nacelle cover 11, and the first air outlet 1 and the air inlet 3 are distributed at intervals; the hub 20 is connected to the nacelle 10, and a second air outlet 2 is arranged on the hub 20; the air inducing piece 30 is arranged at the first air outlet 1, and natural wind outside the cabin cover 11 can drive the air inducing piece 30 to rotate and suck the inner cavity of the cabin cover 11, so that a first air flow 101 and a second air flow 102 are formed at the air inlet 3 under the action of negative pressure; wherein the first air flow 101 flows through the nacelle 10 and is discharged from the first air outlet 1, and the second air flow 102 flows through the hub 20 and is discharged from the second air outlet 2.

In this embodiment, the wind generating set 100 may be a direct-drive wind generating set 100, or may be a semi-direct-drive wind generating set 100, and may be configured with an air intake 30 and dissipate heat from the nacelle 10 and the hub 20 through the air intake 30.

Alternatively, the wind turbine generator system 100 of the present embodiment may be applied to an onshore environment or an offshore environment, and the specific application environment is not particularly limited.

Taking the semi-direct-drive wind generating set 100 as an example, a nacelle 10 is isolated and protected from the outside through a nacelle cover 11, a main shaft device 40, a gear box, a generator, an electric cabinet and the like are sequentially connected in an inner cavity of the nacelle cover 11, a hub 20 is positioned outside the nacelle cover 11 and connected with the main shaft device 40, and external wind force causes blades and the hub 20 to rotate, so that a rotating shaft 41 in the main shaft device 40 is driven to rotate.

In this embodiment, the air inlet 3 and the first air outlet 1 need to be formed on the nacelle cover 11, alternatively, the air inlet 3 and the first air outlet 1 may be formed separately and distributed at intervals, and the specific setting positions may not be limited, but the formed air flow needs to be ensured to fully flow in the whole nacelle 10, so that the air flow entering from the air inlet 3 is prevented from being directly discharged from the first air outlet 1, and effective heat dissipation cannot be formed in the nacelle 10.

In view of the need to simultaneously dissipate heat from the hub 20, the second air outlets 2 are provided on the hub 20, and the number and specific positions of the second air outlets 2 are not particularly limited.

In this embodiment, the two airflows 101 and 102 are formed to respectively dissipate heat of the nacelle 10 and the hub 20, the first airflow 101 is mainly discharged from the first air outlet 1 after passing through the main shaft device 40, the gear box, the generator and the electric cabinet, and the second airflow 102 is mainly discharged from the second air outlet 2 after passing through the main shaft device 40 and the hub 20, so that the two airflows can take away the heat generated by each component.

Alternatively, the air inlet 3 may be provided with a baffle to achieve splitting, or the air flow may be guided to be split into two paths by using a diversion manner, or the air inlet 3 may be provided with two air flows respectively introduced into two paths, or the like.

Alternatively, the air guiding member 30 may be a turbine exhaust fan, which is connected to the first outlet on the nacelle cover 11, and when the external natural wind blows to the air guiding member 30, the air guiding member 30 can rotate, so that the ambient air is stirred through the first air outlet 1, so that a negative pressure suction load is formed inside the nacelle cover 11, and the external ambient air flows under the action of the negative pressure, is sucked from the air inlet 3 on the nacelle cover 11 and then enters the nacelle 10 and the hub 20.

When the external natural wind speed increases, the generated energy of the wind generating set 100 will increase, so that the heat dissipation capacity of each part at the nacelle 10 and the hub 20 will also increase, and the larger heat dissipation requirement needs to be met, and the rotating speed of the wind guiding piece 30 will also increase, so that more air flows can be sucked from the outside, the flow of the first air flow 101 and the second air flow 102 will increase, and the heat dissipation capacity of the nacelle 10 and the hub 20 will be improved; conversely, when the external wind speed is reduced, the heat dissipation requirement is reduced, and meanwhile, the air flow driven by the air inducing piece 30 is also reduced, so that the self-adaptive air flow regulating device has certain self-adaptive regulating capability.

According to the wind generating set 100 provided by the embodiment of the application, the first air outlet 1 is arranged on the cabin cover 11, the second air outlet 2 is arranged on the hub 20, so that the formed first air flow 101 and second air flow 102 are respectively discharged from the two air outlets, the simultaneous heat dissipation of the cabin 10 and the hub 20 is realized, the principle that the inner cavity of the cabin cover 11 forms negative pressure by matching rotation with external natural wind is utilized through the arrangement of the induced air piece 30, the external air flow enters the cabin 10, the first air flow 101 and the second air flow 102 are formed, the natural driving mode is adopted, the air flow is prevented from being formed under the driving of electric energy, and finally, the integral electricity cost is saved on the basis of simultaneously dissipating the heat of the cabin 10 and the hub 20. In addition, the air flow formed by the rotation of the induced air member 30 can be increased along with the increase of the external wind speed, and is positively correlated with the unit capacity and the heat dissipation requirement, so that the driving mode and the unit capacity and the heat dissipation requirement form self-adaptive matching under the control of an electronic control system, and the setting of an electronic control device is reduced.

As an alternative embodiment, with continued reference to fig. 1, the air inlet 3 and the first air outlet 1 are disposed on two opposite sides of the nacelle cover 11, and the first air flow 101 penetrates through the nacelle 10 and is discharged.

In the present embodiment, the air inlet 3 and the first air outlet 1 are disposed opposite to each other, so that the heat dissipation effect of the nacelle 10 is better in consideration of the fact that the first air flow 101 sufficiently enters the interior of the nacelle 10 to form convection.

According to the wind generating set 100 provided by the embodiment of the application, the air inlet 3 and the first air outlet 1 are oppositely arranged on two sides of the cabin cover 11, so that the first airflow 101 forms convection in the cabin cover 11 to penetrate through parts such as a gear box and a generator inside, the first airflow 101 is fully utilized, heat is sent out through convection, heat accumulation inside is avoided, and a better heat dissipation effect is achieved.

As an alternative embodiment, with continued reference to fig. 1, the nacelle cover 11 includes a top plate 12 and a bottom plate 13 disposed opposite to each other in the height direction thereof, the air inlet 3 is disposed at the bottom plate 13 and the first air outlet 1 is disposed at the top plate 12, and the air intake member 30 is disposed outside the nacelle cover 11 and connected to the top plate 12, so that the first air flow 101 flows from the bottom plate 13 to the top plate 12 in the height direction.

Optionally, on the basis that the air inlet 3 and the first air outlet 1 are oppositely arranged, the air inlet 3 is arranged on the bottom plate 13 of the cabin cover 11, and the first air outlet 1 is connected with the air guiding piece 30 and is arranged on the top plate 12 of the cabin cover 11, so that the formed convection direction flows from the bottom plate 13 to the top plate 12.

Considering that the first air outlet 1 is provided on the top plate 12 to enable the air guiding member 30 to have better rotation conditions, natural wind is easier to achieve rotation at a relatively high place, and wind speed is reduced due to the fact that the natural wind is not easy to be blocked by components.

The wind generating set 100 provided in the embodiment of the present application provides a flow direction of the first airflow 101, and achieves sufficient heat dissipation to the nacelle 10 by making the first airflow 101 flow from the bottom plate 13 to the top plate 12.

As an alternative embodiment, with continued reference to fig. 1, the wind turbine 100 includes a main shaft device 40, where the main shaft device 40 is disposed in the nacelle cover 11 and connected to the hub 20, and the second airflow 102 sequentially passes through the main shaft device 40 and the hub 20 and is discharged from the second air outlet 2.

In this embodiment, the hub 20 is specifically connected to the spindle device 40 in the nacelle cover 11, and the second airflow 102 is formed to pass through the spindle device 40 and then enter the hub 20, and finally is discharged from the second air outlet 2.

According to the wind generating set 100 provided by the embodiment of the application, the second air flow 102 is sequentially discharged after passing through the main shaft device 40 and the hub 20, so that heat dissipation can be performed on the hub 20, heat dissipation to the main shaft device 40 can be formed, and heat dissipation to internal equipment is more sufficient.

As an alternative embodiment, the spindle device 40 includes a rotating shaft 41 and is connected to the hub 20 through the rotating shaft 41, the rotating shaft 41 is of a hollow shaft structure and has a cavity 42 penetrating along its axial direction, the rotating shaft 41 is provided with a vent hole 4 and is in communication with the cavity 42, and the second air flow 102 enters the cavity 42 through the vent hole 4 and flows to the hub 20 and is discharged.

The spindle device 40 is driven by the rotating shaft 41, alternatively, the rotating shaft 41 may be a hollow shaft structure, that is, a cavity 42 is formed in the rotating shaft 41, so that the surface of the rotating shaft 41 may be provided with the ventilation hole 4, so that the second air flow 102 enters the cavity 42 of the rotating shaft 41 from the ventilation hole 4 to dissipate heat of the rotating shaft 41.

Due to the rotatability of the rotating shaft 41, a plurality of ventilation holes 4 may be provided on the circumferential surface of the rotating shaft 41 to ensure that the second air flow 102 can sufficiently enter the cavity 42 of the rotating shaft 41, and the number and specific positions of the ventilation holes 4 are not particularly limited.

Since the shaft 41 is connected to the hub 20 and the cavity 42 thereof is also in communication with the hub 20, the second air flow 102 flows through the cavity 42 and then into the hub 20.

The embodiment of the present disclosure provides a wind generating set 100, which provides a specific structure of a rotating shaft 41 and a specific trend of a second airflow 102 passing through a spindle device 40, so as to fully realize heat dissipation of the rotating shaft 41 and a hub 20.

As an alternative embodiment, the spindle device 40 includes a fixing member 43 and a connecting member 44 connected between the rotating shaft 41 and the fixing member 43, a ventilation gap 45 is formed between the rotating shaft 41 and the fixing member 43, the fixing member 43 has a diversion hole 5 and is in communication with the ventilation gap 45, and the second air flow 102 sequentially flows through the ventilation gap 45, the connecting member 44 and the ventilation hole 4 from the diversion hole 5 and then enters the cavity 42.

The spindle device 40 further has a fixing member 43 and a connecting member 44, alternatively, the connecting member 44 may be a bearing, the fixing member 43 may be a fixed shaft seat, and the rotating shaft 41 is connected to the fixing member 43 through the connecting member 44, so as to integrally form the spindle device 40.

Alternatively, the connection members 44 are provided at both ends of the rotation shaft 41 to be fixed to the fixing member 43, such that a ventilation gap 45 is formed between the rotation shaft 41 and the fixing member 43, and the second air flow 102 may flow in the ventilation gap 45 along the circumferential direction of the rotation shaft 41.

Considering that the rotating shaft 41 generates heat by friction with the connecting piece 44 during high-speed rotation, the second air flow 102 can flow in the ventilation gap 45, so that heat at the connecting piece 44 can be taken away, and heat dissipation is achieved on the rotating shaft 41, the connecting piece 44 and the fixing piece 43 at the same time.

Optionally, the fixing piece 43 may be provided with a diversion hole 5, so that the second air flow 102 entering the cabin 10 sequentially enters the ventilation gap 45, the cavity 42 and the hub 20 through the diversion hole 5, and a plurality of diversion holes 5 may be provided on the surface of the fixing piece 43.

The embodiment of the present application provides a wind generating set 100, which provides a specific structure of a main shaft device 40 and a specific flowing direction of a second airflow 102 in the main shaft device 40, so as to realize comprehensive heat dissipation of a rotating shaft 41, a connecting piece 44 and a fixing piece 43, improve heat dissipation capability of internal equipment, improve internal heat environment, and be beneficial to operation of the main shaft device 40.

As an alternative embodiment, the wind generating set 100 further includes a diversion channel 6, one end of the diversion channel 6 is connected to the air inlet 3, and the other end of the diversion channel is connected to the diversion hole 5, and the second airflow 102 flows through the diversion channel 6 and enters the ventilation gap 45.

In this embodiment, a diversion channel 6 is connected between the air inlet 3 and the diversion hole 5 to guide the direction of the second airflow 102, and the diversion channel 6 is used to convey the second airflow 102 into the diversion hole 5, and optionally, the diversion channel 6 may be a ventilation pipe.

According to the wind generating set 100 provided by the embodiment of the application, the flow guide channel 6 is arranged between the air inlet 3 and the flow guide hole 5, so that the second air flow 102 directionally flows, the flow of the second air flow 102 is concentrated, the dispersion loss of the second air flow 102 is avoided, and the heat dissipation capacity of the main shaft device 40 is improved.

As an alternative embodiment, referring to fig. 2, the wind power generator set 100 further comprises a first deflector 7, the first deflector 7 being arranged at the deflector aperture 5, the first deflector 7 being configured to direct the second air flow 102 through the deflector aperture 5 into the ventilation gap 45.

Alternatively, the first air guiding element 7 may be a fan structure, and the first air guiding element 7 may be driven to rotate by electricity, so that the second air flow 102 is guided to flow to the first air guiding element 7 by using the principle that negative pressure is formed after rotation.

The first flow guide 7 is arranged at the flow guide aperture 5 so as to guide the second air flow 102 flowing in the flow guide channel 6 and towards the flow guide aperture 5 into the ventilation gap 45 of the spindle device 40.

According to the wind generating set 100 provided by the embodiment of the application, the first flow guide piece 7 is arranged at the flow guide hole 5 to provide power for the flow of the second air flow 102, and meanwhile, the second air flow 102 can be further concentrated to form directional flow, so that the second air flow 102 has larger air quantity and enters the main shaft device 40, and a better heat dissipation effect is achieved.

As an alternative embodiment, with continued reference to fig. 2, the hub 20 has a receiving cavity 22, the hub 20 is connected to the shaft 41, the receiving cavity 22 is in communication with the cavity 42, and the second air flow 102 flows from the cavity 42 to the receiving cavity 22 and then is discharged from the second air outlet 2.

Optionally, the hub 20 is of a hollow structure and has a receiving cavity 22, the receiving cavity 22 is communicated with the cavity 42 of the rotating shaft 41, a space is provided for the flow of the second air flow 102, so that the second air flow 102 fills the cavity 42 and the receiving cavity 22 with internal heat, and finally is discharged from the second air outlet 2 on the surface of the hub 20.

The accommodating cavity 22 of the hub 20 is provided with an electrical cabinet, and the second air flow 102 can pass through the electrical cabinet and take away heat generated by the electrical cabinet, so that heat dissipation of the hub 20 is realized.

The embodiment of the present disclosure provides a specific structure of a hub 20 and a trend of a second airflow 102 in the hub 20, which provides a flow space for the second airflow 102, so as to achieve sufficient heat dissipation for the hub 20.

As an alternative embodiment, hub 20 has a second air outlet 2 extending axially therethrough, and second air flow 102 exits axially through cavity 42, receiving cavity 22, and second air outlet 2 in sequence.

Optionally, the specific position of the second air outlet 2 formed on the hub 20 is in the axial direction of the rotating shaft 41, and the second air outlet 2 is penetrated in the axial direction, so that the cavity 42 of the rotating shaft 41, the accommodating cavity 22 of the hub 20 and the second air outlet 2 are kept on the same straight line in the axial direction.

When the second air flow 102 enters the cavity 42 of the rotating shaft 41, the second air flow can keep a straight flow along the axial direction, and the second air flow flows out through the second air outlet 2 in a straight line.

According to the wind generating set 100 provided by the embodiment of the application, the second air outlet 2 is formed on the hub 20 in the axial penetrating mode, the second air flow 102 can be discharged through the cavity 42, the accommodating cavity 22 and the second air outlet 2 in the axial straight line mode, the phenomenon that the second air flow 102 is accumulated in the hub 20 in a blocking mode when flowing is avoided, the flowing resistance is reduced, heat can be discharged and taken away smoothly finally, and effective heat dissipation is achieved.

As an alternative embodiment, with continued reference to fig. 2, the wind turbine 100 further includes a second flow guiding member 8, where the second flow guiding member 8 is disposed at the second air outlet 2, and the second flow guiding member 8 is configured to guide the second air flow 102 to be discharged from the accommodating cavity 22 through the second air outlet 2.

Alternatively, the second flow guiding element 8 is a fan structure, and can be driven to rotate by electricity, and is arranged at the second air outlet 2, so that when rotating, negative pressure is formed in the accommodating cavity 22 of the hub 20, and the second air flow 102 in the cavity 42 can flow towards the accommodating cavity 22 of the hub 20.

According to the wind generating set 100 provided by the embodiment of the application, the second guide piece 8 is arranged at the second air outlet 2, so that directional guide can be formed on the trend of the second air flow 102, power is provided for the second air flow 102 to enter the hub 20, and the air flow can more efficiently enter the hub 20 to carry away heat and be rapidly discharged from the second air outlet 2.

As an alternative embodiment, the hub 20 comprises a connection plate 21, the connection plate 21 having a manhole opening therein, and the second deflector 8 being connected to the connection plate 21 and being spaced apart from the manhole opening.

Alternatively, the connecting plate 21 is a nonmetallic flame-retardant film structure, and the connecting plate 21 can be fixed on the hub 20 through a pressing plate of the outer ring and bolts.

The connecting plate 21 is provided with a manhole opening, and the second guide piece 8 and the manhole opening are arranged on the connecting plate 21 at intervals, optionally, the second guide piece 8 can be arranged above the manhole opening and separated by a bracket, so that the influence of the second guide piece 8 on the manhole opening is prevented, and the access of workers is blocked.

When the second flow guiding piece 8 rotates, the second air flow 102 is discharged from the second air outlet 2 through the connecting plate 21; when the second guide member 8 does not work, the second guide member is located on the connecting plate 21 and can jointly seal the hub 20 together with the connecting plate 21, so that the second guide member has a sealing effect.

Optionally, the manhole opening below the second guiding element 8 is in a semicircular plate structure, and is rotatably arranged on the connecting plate 21, the semicircular plate structure can rotate around the winding and folding line, when a worker goes in and out of the hub 20, the worker can go in and out of the hub through overturning the semicircular plate, and the manhole opening is closed through a zipper, a sticking buckle or a magnet and other components.

According to the wind generating set 100 provided by the embodiment of the application, the second guide piece 8 and the manhole opening are arranged on the connecting plate 21 at intervals, so that the second guide piece 8 and the manhole opening are integrally arranged, the occupied space of the second guide piece 8 is saved on the premise of smoothly exhausting air, and meanwhile, the manhole opening is also favorable for guiding out the second airflow 102.

As an alternative embodiment, referring to fig. 2 to 4, the wind power generator set 100 further comprises a check member 50, the check member 50 being provided at least one of the first air outlet 1 and the second air outlet 2, the check member 50 being configured to be opened when the air flow flows inside-out in the nacelle cover 11 or to be closed when the air flow is stationary.

Optionally, the check member 50 may be a non-return valve, and the check member 50 may be disposed at the first air outlet 1 and/or the second air outlet 2 according to different requirements, where the check member 50 is opened when the formed air flow needs to be discharged, and closed when no air flow passes through, so as to protect the internal device.

According to the wind generating set 100 provided by the embodiment of the application, the check piece 50 is arranged at the air outlet, so that smooth discharge of air flow can be realized during heat dissipation, sealing protection of the cabin 10 and the inside of the hub 20 can be realized during static state, the dual-purpose performance is realized, and the overall safety performance is improved.

As an alternative embodiment, referring to fig. 2 to 4, the check member 50 includes a movable member 51, the movable member 51 has a fixed portion 52 and a rotating portion 53, the movable member 51 is connected to the air outlet through the fixed portion 52, and the rotating portion 53 is connected to the fixed portion 52 and can rotate relative to the fixed portion 52.

In this embodiment, the check member 50 is a movable member 51 having a fixed portion 52 and a rotating portion 53, alternatively, the fixed portion 52 may be a valve shaft, the rotating portion 53 may be a valve blade, the entire movable member 51 may be fixed at the air outlet through the fixed portion 52, and the rotating portion 53 may rotate around the fixed portion 52, so as to control the opening and closing of the air outlet and the size of the opening.

When the air flow is discharged through the air outlet, the air flow can push up the rotating part 53 of the movable piece 51, so that the rotating part 53 rotates 90 degrees around the fixed part 52, the air outlet is opened, and the air flow is discharged; when no air flow passes through the air outlet, the rotating part 53 can reversely rotate for 90 degrees to be closed under the action of gravity, so that the air outlet is closed, and the air outlet is prevented from being disturbed by the outside.

The embodiment of the application provides a wind generating set 100, provides a concrete structure and theory of operation of non return piece 50, and simple structure through the cooperation of fixed part 52 and rotation portion 53, has realized that the air outlet opens when static when the heat dissipation and closes, in time seals the protection to cabin 10 and wheel hub 20 inside.

As an alternative embodiment, referring to fig. 3 and 4, the check member 50 includes more than two movable members 51, and the more than two movable members 51 are arranged side by side and have a first state M and a second state N;

in the first state M, a through-flow port 54 is formed between the rotating portion 53 of any one movable member 51 and the fixed portion 52 of the adjacent movable member 51, and the air flow can be discharged through the through-flow port 54;

in the second state N, the rotating portion 53 of any movable member 51 is overlapped with the fixed portion 52 of the adjacent movable member 51, so that the movable member 51 closes the air outlet.

Optionally, a plurality of movable pieces 51 may be disposed at the air outlet, and are disposed side by side to form an integral structure, so that each movable piece 51 corresponds to a sub air outlet, and the rotary part 53 is easier to be jacked to complete rotation during air exhaust, so that the air exhaust is more uniform and smooth.

The movable member 51 has a first state M, which is an operating state, and a second state N, which is a non-operating state.

When in the first state M, each rotating portion 53 is pushed open by the airflow, and the airflow is discharged through the through-flow opening 54 formed between the adjacent fixed portions 52, and the rotating angle may be different due to different influences of the airflow on each rotating portion 53, so that the size of the through-flow opening 54 is different.

When in the second state N, each rotating portion 53 is overlapped on the adjacent fixed portion 52 under the action of gravity, so as to form a closure for the air outlet, and isolate the internal and external environments of the nacelle 10.

According to the wind generating set 100 provided by the embodiment of the application, the check piece 50 is arranged to be of the structure of the movable pieces 51, so that the uniformity of air flow in discharging is improved, the air flow can be smoothly discharged, and meanwhile, the movable pieces 51 can be matched with each other to jointly complete opening and closing of the air outlet.

As an alternative embodiment, referring to fig. 5, the air guiding member 30 includes an air guiding wheel 31 and an air guiding tube 32, the air guiding member 30 is connected to the first air outlet 1 through the air guiding tube 32, the air guiding wheel 31 is disposed on the air guiding tube 32, and the air guiding wheel 31 can rotate relative to the air guiding tube 32 to enable the first air flow 101 to be discharged through the air guiding tube 32.

Optionally, the air guiding member 30 is a turbine exhaust fan, the air guiding wheel 31 is a turbine correspondingly, the air guiding pipe 32 is inserted into the first air outlet 1, the air guiding wheel 31 is connected to the air guiding pipe 32, and the first air flow 101 is formed through rotation of the air guiding wheel 31 and is discharged from the first air outlet 1.

Specifically, the working principle of the induced air member 30 is that the natural wind speed in the outside environment pushes the induced air wheel 31 to rotate, and the air flow in the parallel direction is converted into the vertical air flow from bottom to top by utilizing the centrifugal force and the negative pressure effect, so that the device has no self-power consumption and no noise, and can work to discharge the hot air flow in the cabin 10 as long as the outside has natural wind.

The embodiment of the application provides a wind generating set 100, provides a concrete structure of induced air piece 30, through setting up induced air wheel 31 and induced air pipe 32, can utilize the cooperation of induced air wheel 31 and external natural wind to accomplish and rotate, make the inside negative pressure that forms of cabin 10, and then form the air current to utilize induced air pipe 32 to derive the air current, realize the self-driven no power consumption heat dissipation to cabin 10, save the heat dissipation electricity consumption cost.

As an alternative embodiment, referring to fig. 5 and 6, the wind guiding wheel 31 includes a central shaft 33 and wind guiding blades 34 sequentially disposed around the circumference of the central shaft 33, the central shaft 33 is inserted into the wind guiding tube 32, the wind guiding blades 34 disposed adjacently are staggered with each other with a step difference, and natural wind can drive the wind guiding blades 34 to rotate so as to make the wind guiding wheel 31 rotate around the central shaft 33.

Optionally, the wind guiding wheel 31 specifically includes a central shaft 33 and a plurality of wind guiding blades 34, the wind guiding wheel 31 always rotates around the central shaft 33, the wind guiding blades 34 can be staggered with each other to form a step-shaped step structure, and external natural wind can transversely blow to a step formed between the wind guiding blades 34, so as to drive the wind guiding wheel 31 to rotate.

Alternatively, the central shaft 33 is fixedly inserted into the air guiding tube 32 so that the air guiding wheel 31 is connected to the air guiding tube 32, and the central shaft 33 is connected with the rotating air guiding wheel 31 through a bearing.

According to the wind generating set 100 provided by the embodiment of the application, the wind guiding blades 34 are arranged on the wind guiding wheel 31, so that external natural wind can be better captured, the wind guiding wheel 31 is driven to rotate, a stronger driving force is formed, the wind guiding wheel 31 can be rotated more easily, a negative pressure area is formed inside the engine room 10, and the heat dissipation capacity is improved.

As an alternative embodiment, the wind generating set 100 further includes a nacelle 60, where the nacelle 60 covers the hub 20 and has an air outlet gap 9 with the hub 20, and the second air flow 102 discharged from the second air outlet 2 is discharged through the air outlet gap 9;

and/or, the wind generating set 100 further comprises a blocking member 70, wherein the blocking member 70 is arranged at the air inlet 3 to separate the air inlet 3 to form a first air flow 101 and a second air flow 102;

and/or the wind power generation set 100 further comprises a filter element 80, the filter element 80 being arranged at the air intake 3, the filter element 80 being configured to filter impurities in the first air flow 101 and the second air flow 102.

Optionally, a layer of air guide sleeve 60 may be disposed on the outer surface of the hub 20 to isolate and protect the hub 20, and an air outlet gap 9 is formed between the air guide sleeve 60 and the hub 20, and the second air flow 102 flowing through the second air outlet 2 enters the air guide sleeve 60 and is finally discharged to the external environment through the air outlet gap 9.

Alternatively, the blocking member 70 may be a partition structure, which is disposed at the air inlet 3, so that the air inlet 3 is separated to form two sub-air openings, so as to divide the air flow and form the first air flow 101 and the second air flow 102.

Considering that the first air flow 101 and the second air flow 102 entering from the air inlet 3 may affect the equipment inside the nacelle 10, it is necessary to ensure that the air flow entering into the interior is dry and clean, and therefore, the filter 80 may be disposed at the air inlet 3 to perform a filter drying process on the first air flow 101 and the second air flow 102.

According to different actual demands, the filtered air flow is divided into different filtering grades, including primary filtration, secondary filtration and the like, optionally, the filter element 80 may be a primary filter, a secondary filter or a filter sequentially passing through the primary filter and the secondary filter.

For the application of the wind generating set 100 in the land environment, the filtering, mainly purifying treatment, of the pollutant impurities in the air flow are considered, and for the offshore environment, the influences of water vapor, salt mist and the like are considered, so that the treatment such as dehumidification and drying are also carried out, and the whole dryness and cleanliness of the air flow are ensured.

According to the wind generating set 100 provided by the embodiment of the application, the hub 20 can be isolated and protected through the air guide sleeve 60, meanwhile, the second air flow 102 is not influenced to be discharged, the air flow can be filtered through the filter element 80, the clean requirement of the air flow is ensured, the safety guarantee is provided for equipment in the engine room 10, the damage of impurities is avoided, the service life of the equipment is guaranteed, and the reliability of the whole operation is improved.

According to the wind generating set 100 provided by the embodiment of the application, the first air outlet 1 is arranged on the cabin cover 11, the second air outlet 2 is arranged on the hub 20, so that the formed first air flow 101 and second air flow 102 are respectively discharged from the two air outlets, the simultaneous heat dissipation of the cabin 10 and the hub 20 is realized, the principle that the inner cavity of the cabin cover 11 forms negative pressure by matching rotation with external natural wind is utilized through the arrangement of the induced air piece 30, the external air flow enters the cabin 10, the first air flow 101 and the second air flow 102 are formed, the natural driving mode is adopted, the air flow is prevented from being formed under the driving of electric energy, and finally, the integral electricity cost is saved on the basis of simultaneously dissipating the heat of the cabin 10 and the hub 20. In addition, the air flow formed by the rotation of the induced air member 30 can be increased along with the increase of the external wind speed, and is positively correlated with the unit capacity and the heat dissipation requirement, so that the driving mode and the unit capacity and the heat dissipation requirement form self-adaptive matching under the control of an electronic control system, and the setting of an electronic control device is reduced.

While the present 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 present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (18)

1. A wind power generator set (100), characterized by comprising:

the engine room (10) comprises an engine room cover (11), wherein an air inlet (3) and a first air outlet (1) are arranged on the engine room cover (11), and the first air outlet (1) and the air inlet (3) are distributed at intervals;

a hub (20) connected to the nacelle (10), the hub (20) being provided with a second air outlet (2);

the air inducing piece (30) is arranged at the first air outlet (1), and natural wind outside the cabin cover (11) can drive the air inducing piece (30) to rotate and suck the inner cavity of the cabin cover (11), so that a first air flow (101) and a second air flow (102) are formed at the air inlet (3) under the action of negative pressure;

wherein the first air flow (101) flows through the nacelle (10) and is discharged from the first air outlet (1), and the second air flow (102) flows through the hub (20) and is discharged from the second air outlet (2).

2. Wind power plant (100) according to claim 1, wherein the air inlet (3) is arranged opposite to the first air outlet (1) on both sides of the nacelle cover (11), the first air flow (101) being discharged after passing through the nacelle (10).

3. Wind power generator unit (100) according to claim 2, characterized in that the nacelle cover (11) comprises a top plate (12) and a bottom plate (13) arranged opposite to each other in the height direction thereof, the air inlet (3) is arranged at the bottom plate (13) and the first air outlet (1) is arranged at the top plate (12), and the air guide (30) is arranged outside the nacelle cover (11) and connected to the top plate (12) so that the first air flow (101) flows from the bottom plate (13) to the top plate (12) in the height direction.

4. Wind power plant (100) according to claim 1, characterized in that the wind power plant (100) comprises a main shaft device (40), the main shaft device (40) being arranged in the nacelle cover (11) and being connected to the hub (20), the second air flow (102) being discharged from the second air outlet (2) after passing the main shaft device (40) and the hub (20) in sequence.

5. Wind generating set (100) according to claim 4, characterized in that the spindle means (40) comprises a rotating shaft (41) and is connected with the hub (20) by the rotating shaft (41), the rotating shaft (41) is of hollow shaft structure and is provided with a cavity (42) penetrating along the axial direction of the rotating shaft (41), the rotating shaft (41) is provided with a ventilation hole (4) and is communicated with the cavity (42), and the second air flow (102) enters the cavity (42) from the ventilation hole (4) and flows to the hub (20) and then is discharged.

6. The wind turbine (100) of claim 5, wherein the main shaft device (40) comprises a fixing member (43) and a connecting member (44) connected between the rotating shaft (41) and the fixing member (43), a ventilation gap (45) is formed between the rotating shaft (41) and the fixing member (43), the fixing member (43) is provided with a diversion hole (5) and is communicated with the ventilation gap (45), and the second air flow (102) sequentially flows through the ventilation gap (45), the connecting member (44) and the ventilation hole (4) from the diversion hole (5) and then enters the cavity (42).

7. The wind power generator set (100) according to claim 6, wherein the wind power generator set (100) further comprises a diversion channel (6), one end of the diversion channel (6) is connected with the air inlet (3) and the other end is connected with the diversion hole (5), and the second air flow (102) enters the ventilation gap (45) after flowing through the diversion channel (6).

8. The wind power plant (100) according to claim 6, wherein the wind power plant (100) further comprises a first deflector (7), the first deflector (7) being arranged at the deflector aperture (5), the first deflector (7) being configured to direct the second air flow (102) through the deflector aperture (5) into the ventilation gap (45).

9. The wind power generator set (100) of claim 5, wherein the hub (20) has a receiving cavity (22), the hub (20) is connected to the shaft (41) and the receiving cavity (22) is in communication with the cavity (42), and the second air flow (102) flows from the cavity (42) to the receiving cavity (22) and then is discharged from the second air outlet (2).

10. The wind power plant (100) according to claim 9, wherein the hub (20) has the second air outlet (2) extending therethrough in the axial direction, the second air flow (102) being discharged through the cavity (42), the receiving cavity (22) and the second air outlet (2) in this order in the axial direction.

11. The wind power plant (100) according to claim 9, wherein the wind power plant (100) further comprises a second deflector (8), the second deflector (8) being arranged at the second air outlet (2), the second deflector (8) being configured to direct the second air flow (102) to be discharged from the receiving cavity (22) through the second air outlet (2).

12. Wind power plant (100) according to claim 11, wherein the hub (20) comprises a connection plate (21), the connection plate (21) having a manhole opening therein, the second deflector (8) being connected to the connection plate (21) and being arranged at a distance from the manhole opening.

13. Wind park (100) according to any of claims 1-12, wherein the wind park (100) further comprises a check (50), the check (50) being arranged at least one of the first air outlet (1) and the second air outlet (2), the check (50) being configured to open when an air flow flows inside-out in the nacelle cover (11) or to close when an air flow is stationary.

14. The wind turbine (100) of claim 13, wherein the non-return element (50) comprises a movable element (51), the movable element (51) has a fixed portion (52) and a rotating portion (53), the movable element (51) is connected to the air outlet through the fixed portion (52), and the rotating portion (53) is connected to the fixed portion (52) and is rotatable relative to the fixed portion (52).

15. The wind power plant (100) according to claim 14, wherein the non-return element (50) comprises more than two movable elements (51), the more than two movable elements (51) being arranged side by side and having a first state (M) and a second state (N);

in the first state (M), a through-flow port (54) is formed between the rotating part (53) of any movable piece (51) and the fixed part (52) of the adjacent movable piece (51), and air flow can be discharged through the through-flow port (54);

in the second state (N), the rotating portion (53) of any movable member (51) is overlapped with the fixed portion (52) of the adjacent movable member (51), so that the movable member (51) seals the air outlet.

16. Wind generating set (100) according to any of claims 1 to 12, characterized in that the wind guiding member (30) comprises a wind guiding wheel (31) and a wind guiding pipe (32), the wind guiding member (30) is connected with the first wind outlet (1) through the wind guiding pipe (32), the wind guiding wheel (31) is arranged on the wind guiding pipe (32), and the wind guiding wheel (31) can rotate relative to the wind guiding pipe (32) so that the first air flow (101) is discharged through the wind guiding pipe (32).

17. Wind generating set (100) according to claim 16, characterized in that the wind guiding wheel (31) comprises a central shaft (33) and wind guiding blades (34) which are arranged in succession around the circumference of the wind guiding wheel, the central shaft (33) is inserted into the wind guiding pipe (32), the wind guiding blades (34) which are arranged adjacently are staggered with each other with a step, and the natural wind can drive the wind guiding blades (34) to rotate so that the wind guiding wheel (31) rotates around the central shaft (33).

18. The wind power generator set (100) according to any one of claims 1 to 12, wherein the wind power generator set (100) further comprises a nacelle (60), the nacelle (60) being arranged to cover the hub (20) with an air outlet gap (9) between the nacelle and the hub (20), the second air flow (102) being discharged from the second air outlet (2) being discharged through the air outlet gap (9);

and/or, the wind generating set (100) further comprises a blocking piece (70), wherein the blocking piece (70) is arranged at the air inlet (3) to separate the air inlet (3) to form the first air flow (101) and the second air flow (102);

and/or the wind power generator set (100) further comprises a filter (80), the filter (80) is arranged at the air inlet (3), and the filter (80) is configured to filter impurities in the first air flow (101) and the second air flow (102).