阅读说明：本技术 风力发电机的散热系统及风力发电机 (Cooling system of wind driven generator and wind driven generator ) 是由 应锐 武胜飞 唐治平 于 2021-06-15 设计创作，主要内容包括：本发明涉及风力发电技术领域,具体涉及一种风力发电机的散热系统及风力发电机。风力发电机的散热系统包括：散热部件,具有散热进口和散热出口且适于设置在风力发电机的叶片上；供液通道,具有供液进口和供液出口,供液出口与散热进口连接；回液通道,具有回液进口和回液出口,回液进口与散热出口连接；液体腔,适于设置在风力发电机的待散热部件上,液体腔与供液进口、回液出口均连接,供液通道、散热部件、回液通道及液体腔形成散热循环回路；循环泵,用于控制冷却液在散热循环回路中流动。本发明通过风对冷却液进行冷却,不需要消耗电能,运行成本和设备成本低,在冬季时,高温的冷却液融化叶片上的冰,使得散热系统附带除冰功能。(The invention relates to the technical field of wind power generation, in particular to a radiating system of a wind driven generator and the wind driven generator. The cooling system of aerogenerator includes: the heat dissipation part is provided with a heat dissipation inlet and a heat dissipation outlet and is suitable for being arranged on the blade of the wind driven generator; the liquid supply channel is provided with a liquid supply inlet and a liquid supply outlet, and the liquid supply outlet is connected with the heat dissipation inlet; the liquid return channel is provided with a liquid return inlet and a liquid return outlet, and the liquid return inlet is connected with the heat dissipation outlet; the liquid cavity is suitable for being arranged on a part to be cooled of the wind driven generator, the liquid cavity is connected with the liquid supply inlet and the liquid return outlet, and the liquid supply channel, the cooling part, the liquid return channel and the liquid cavity form a cooling circulation loop; and the circulating pump is used for controlling the flow of the cooling liquid in the heat dissipation circulating loop. The invention cools the cooling liquid by wind without consuming electric energy, has low operation cost and equipment cost, and the high-temperature cooling liquid melts ice on the blades in winter so that the heat dissipation system has a deicing function.)

1. A heat dissipation system for a wind turbine, comprising:

a heat dissipation member (10) having a heat dissipation inlet and a heat dissipation outlet and adapted to be disposed on a blade (71) of a wind turbine;

the liquid supply channel is provided with a liquid supply inlet and a liquid supply outlet, and the liquid supply outlet is connected with the heat dissipation inlet;

the liquid return channel is provided with a liquid return inlet and a liquid return outlet, and the liquid return inlet is connected with the heat dissipation outlet;

the liquid cavity is suitable for being arranged on a part to be cooled of the wind driven generator, the liquid cavity is connected with the liquid supply inlet and the liquid return outlet, and the liquid supply channel, the cooling part (10), the liquid return channel and the liquid cavity form a cooling circulation loop;

and the circulating pump (40) is used for controlling the flow of the cooling liquid in the heat dissipation circulating loop.

2. The heat dissipation system of claim 1, wherein the heat dissipation member (10) is provided in a plurality of numbers and is disposed corresponding to the plurality of blades (71), the liquid supply channel includes a main liquid supply channel and a plurality of branch liquid supply channels, the main liquid supply channel is connected to the liquid chamber, the plurality of branch liquid supply channels are all communicated with the main liquid supply channel and are correspondingly connected to the plurality of heat dissipation members (10), the liquid return channel includes a main liquid return channel and a plurality of branch liquid return channels, the main liquid return channel is connected to the liquid chamber, and the plurality of branch liquid return channels are all connected to the main liquid return channel and are correspondingly connected to the plurality of heat dissipation members (10).

3. The heat dissipation system according to claim 2, further comprising a branch chamber (51), wherein the branch chamber (51) is adapted to be disposed on a hub (72) of the wind turbine, wherein the branch chamber (51) is in communication with the main liquid supply channel and the plurality of branch liquid supply channels, respectively, and/or wherein the heat dissipation system further comprises a branch chamber (52), wherein the branch chamber (52) is adapted to be disposed on the hub (72) of the wind turbine, and wherein the branch chamber (52) is in communication with the main liquid return channel and the plurality of branch liquid return channels, respectively.

4. The heat dissipation system according to claim 1, characterized in that the heat dissipation system comprises a liquid return pipe (30), an inner cavity of the liquid return pipe (30) forming the liquid return channel, a portion of the liquid return pipe (30) being adapted to be arranged on a main shaft (81) of the wind turbine and forming a heat absorption pipe.

5. The heat dissipation system according to claim 1, characterized in that the heat dissipation system comprises a liquid supply pipe (20), an inner cavity of the liquid supply pipe (20) forms a liquid supply channel, and the liquid supply pipe (20) is suitable for being arranged on a main shaft (81), a hub (72), a blade (71) and a component to be dissipated of the wind driven generator.

6. The heat dissipation system according to claim 5, wherein the liquid supply tube (20) is adapted to be inserted through the main shaft (81) and the component to be dissipated, or wherein an end of the liquid supply tube (20) protrudes into the liquid chamber.

7. The heat dissipation system of claim 1, wherein the circulation pump (40) is provided with one, the circulation pump (40) has a circulation inlet and a circulation outlet, the circulation inlet is connected with the liquid chamber, the circulation outlet is connected with the liquid supply inlet, or the circulation pump (40) is provided with two and respectively a first circulation pump (41) and a second circulation pump (42), the first circulation pump (41) is provided on the liquid supply passage, and the second circulation pump (42) is provided on the liquid return passage.

8. The heat dissipating system according to claim 1, wherein the heat dissipating member (10) is a heat dissipating pipe disposed in an inner cavity of the blade (71), or the heat dissipating member (10) is a heat dissipating pipe disposed on a surface of the blade (71).

9. The heat dissipation system according to claim 1, wherein the cooling fluid is a lubricating oil, the component to be dissipated is a gear box (90), and an inner cavity of the gear box (90) forms the fluid chamber.

10. A wind power generator, comprising: the heat dissipating system of any of claims 1-9.

Technical Field

The invention relates to the technical field of wind power generation, in particular to a radiating system of a wind driven generator and the wind driven generator.

Background

The wind generating set is a generating set which converts wind energy into electric energy, the heat load of a cabin of the wind generating set is increased due to the large-scale development trend of the power and the size of the wind generating set, the internal temperature rise of the cabin is overhigh, the parts alarm at high temperature, the shutdown and the like are caused, and in order to ensure the operation reliability of the set, a heat dissipation system is required to be configured to maintain the temperature in the cabin. In addition, when the wind generating set operates in severe winter, the icing of the blades seriously affects the pneumatic performance of the wind generating set, so that the generating capacity is reduced, and the load of the blades is increased to affect the service life of the blades.

In order to solve the above problems, the prior art provides a heat exchange deicing system for a wind generating set, the system comprises a three-way electromagnetic valve, a water pump, a refrigerator, a heat energy collecting device for collecting heat discharged by the refrigerator during refrigeration, an auxiliary heating device, a supercharger, a controller, a temperature sensor I arranged in a blade air duct, an icing sensor arranged on a blade and a temperature sensor II for detecting the temperature outside the blade, the refrigerator is connected with a frequency converter, a generator and a liquid cooling pipeline in a gear box and is responsible for cooling of cooling liquid, the heat collecting device exchanges heat with the refrigerator, the auxiliary heating device is matched to heat sucked air, and then the heated hot air is conveyed to the air duct in the blade through the supercharger, so that the blades are heated and deiced. The system can strengthen the heat dissipation of the engine room of the wind generating set and inhibit the icing phenomenon on the surface of the blade, but has the following defects:

1. the system is complex in structure, the refrigerator, the auxiliary heating device and the supercharger all need to consume electric energy, and the operation cost and the equipment cost are high;

2. the heat generated by the refrigerator, the auxiliary heating device and the supercharger during operation is also dissipated into the engine room, and the heat dissipation effect is influenced;

3. the heat of the components such as the generator, the gear box and the like is collected and then is subjected to heat exchange with air, so that the heat dissipation process is complex;

4. the heat collecting device adopts an air blower, and adopts an air-cooling heat dissipation mode to cool the heat-exchanging water, so that the heat dissipation efficiency is poor.

Disclosure of Invention

The invention mainly aims to provide a heat dissipation system of a wind driven generator and the wind driven generator, and aims to solve the problems that a heat exchange deicing system of the wind driven generator set in the prior art is complex in structure and high in cost.

In order to achieve the above object, the present invention provides a heat dissipation system for a wind turbine, including: the heat dissipation part is provided with a heat dissipation inlet and a heat dissipation outlet and is suitable for being arranged on the blade of the wind driven generator; the liquid supply channel is provided with a liquid supply inlet and a liquid supply outlet, and the liquid supply outlet is connected with the heat dissipation inlet; the liquid return channel is provided with a liquid return inlet and a liquid return outlet, and the liquid return inlet is connected with the heat dissipation outlet; the liquid cavity is suitable for being arranged on a part to be cooled of the wind driven generator, the liquid cavity is connected with the liquid supply inlet and the liquid return outlet, and the liquid supply channel, the cooling part, the liquid return channel and the liquid cavity form a cooling circulation loop; and the circulating pump is used for controlling the flow of the cooling liquid in the heat dissipation circulating loop.

Optionally, the heat dissipation part is provided with a plurality of and corresponds the setting with a plurality of blades, supply liquid channel including supply liquid main entrance and a plurality of confession liquid branch channel, supply liquid main entrance to be connected with the liquid chamber, a plurality of confession liquid branch channels all communicate with the supply liquid main entrance and correspond with a plurality of heat dissipation parts and be connected, return liquid channel including returning liquid main entrance and a plurality of liquid branch channel that returns, return liquid main entrance to be connected with the liquid chamber, a plurality of liquid branch channels all are connected with liquid main entrance and correspond with a plurality of heat dissipation parts and be connected.

Optionally, the heat dissipation system further includes a branch chamber adapted to be disposed on a hub of the wind turbine, the branch chamber being respectively communicated with the liquid supply main channel and the plurality of liquid supply branch channels, and/or the heat dissipation system further includes a junction chamber adapted to be disposed on the hub of the wind turbine, the junction chamber being respectively communicated with the liquid return main channel and the plurality of liquid return branch channels.

Optionally, the heat dissipation system comprises a liquid return pipe, an inner cavity of the liquid return pipe forms a liquid return channel, and a part of the liquid return pipe is suitable for being arranged on a main shaft of the wind driven generator and forms a heat absorption pipe.

Optionally, the heat dissipation system includes a liquid supply pipe, an inner cavity of the liquid supply pipe forms a liquid supply channel, and the liquid supply pipe is suitable for being arranged on the main shaft, the hub, the blades and the part to be dissipated of the wind driven generator.

Optionally, the liquid supply tube is adapted to be inserted through the main shaft and the component to be cooled, or one end of the liquid supply tube extends into the liquid chamber.

Optionally, the circulating pump is provided with one, the circulating pump has a circulation inlet and a circulation outlet, the circulation inlet is connected with the liquid cavity, and the circulation outlet is connected with the liquid supply inlet, or the circulating pump is provided with two and is respectively a first circulating pump and a second circulating pump, the first circulating pump is arranged on the liquid supply channel, and the second circulating pump is arranged on the liquid return channel.

Alternatively, the heat radiating member is a heat radiating pipe disposed in the inner cavity of the blade, or the heat radiating member is a heat radiating pipe disposed on the surface of the blade.

Optionally, the cooling fluid is lubricating oil, the component to be cooled is a gear box, and an inner cavity of the gear box forms a fluid cavity.

The present invention also provides a wind power generator comprising: the heat dissipation system is provided.

The technical scheme of the invention has the following advantages: wait that heat dissipation part during operation produces heat, heat transfer is the coolant liquid in the liquid chamber, the temperature of coolant liquid risees, the coolant liquid of high temperature flows in the confession liquid passageway, then flow in heat dissipation part, the blade is when rotating, under the convection action of wind, cool off the coolant liquid in the heat dissipation part, the temperature of coolant liquid reduces, low-temperature coolant liquid flows in the liquid chamber through returning the liquid passageway, repeat so, control the coolant liquid through the circulating pump and flow in the heat dissipation circulation circuit that confession liquid passageway, heat dissipation part, returning the liquid passageway and liquid chamber formed. The cooling system cools the cooling liquid through wind, electric energy does not need to be consumed, the operation cost and the equipment cost are low, in addition, when in severe winter, the cooling liquid with high temperature melts ice on the blades, the deicing function is attached to the cooling system, the formation of ice can be further suppressed by the cooling liquid with high temperature, the cooling system has the anti-icing function, and the practical value is higher.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 shows a simplified schematic view of a first embodiment of the heat dissipation system of a wind turbine according to the invention;

fig. 2 is a simplified schematic diagram of a second embodiment of the heat dissipation system of the wind turbine according to the present invention.

Description of reference numerals:

10. a heat dissipating member; 20. a liquid supply tube; 30. a liquid return pipe; 31. a heat absorbing tube; 40. a circulation pump; 41. a first circulation pump; 42. a second circulation pump; 51. a shunting cavity; 52. a manifold chamber; 61. a connecting pipe; 71. a blade; 72. a hub; 81. a main shaft; 82. a bearing; 90. a gear case; 91. an inner cavity; 92. a primary gear train; 93. a secondary gear train; 100. a body.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example one

As shown in fig. 1, the heat dissipation system of the wind turbine generator of the present embodiment includes: the heat dissipation part 10 is provided with a heat dissipation inlet and a heat dissipation outlet and is suitable for being arranged on a blade 71 of the wind driven generator; the liquid supply channel is provided with a liquid supply inlet and a liquid supply outlet, and the liquid supply outlet is connected with the heat dissipation inlet; the liquid return channel is provided with a liquid return inlet and a liquid return outlet, and the liquid return inlet is connected with the heat dissipation outlet; the liquid cavity is suitable for being arranged on a part to be cooled of the wind driven generator, the liquid cavity is connected with the liquid supply inlet and the liquid return outlet, and the liquid supply channel, the cooling part 10, the liquid return channel and the liquid cavity form a cooling circulation loop; the circulation pump 40 is used to control the flow of the coolant in the heat-dissipation circulation circuit.

Use aerogenerator's of this embodiment cooling system, treat that heat dissipation part during operation produces heat, heat transfer is to the coolant liquid in the liquid chamber, the temperature of coolant liquid rises, the coolant liquid of high temperature flows into in the liquid feed passageway, then flow into in heat dissipation part 10, the blade is when rotating, under the convection action of wind, cool off the coolant liquid in heat dissipation part 10, the temperature of coolant liquid reduces, the low-temperature coolant liquid flows into in the liquid chamber through returning the liquid passageway, so repeatedly, control coolant liquid through circulating pump 40 and flow in the liquid feed passageway, heat dissipation part 10, the heat dissipation circulation return circuit that returning liquid passageway and liquid chamber formed. The cooling system cools the cooling liquid through wind, electric energy does not need to be consumed, the operation cost and the equipment cost are low, in addition, when in severe winter, the cooling liquid with high temperature melts ice on the blades, the deicing function is attached to the cooling system, the formation of ice can be further suppressed by the cooling liquid with high temperature, the cooling system has the anti-icing function, and the practical value is higher.

In this embodiment, the heat dissipation component 10 is provided with a plurality of and corresponds the setting with a plurality of blades 71, the liquid supply channel includes liquid supply main channel and a plurality of branch passageways that supply liquid, the liquid supply main channel is connected with the liquid chamber, a plurality of branch passageways that supply liquid all communicate with liquid supply main channel and correspond with a plurality of heat dissipation components 10 and be connected, the liquid return channel includes liquid return main channel and a plurality of branch passageways that return liquid, liquid return main channel is connected with the liquid chamber, a plurality of branch passageways that return liquid all are connected with liquid return main channel and correspond with a plurality of heat dissipation components 10 and be connected, a plurality of branch passageways that supply liquid, a plurality of branch passageways that return liquid and a plurality of heat dissipation components 10 one-to-one are connected. Each blade 71 is provided with a heat dissipation member 10, and high-temperature coolant is distributed to the heat dissipation member 10 on each blade, thereby improving heat dissipation efficiency.

In this embodiment, the heat dissipation system further includes a branch chamber 51, the branch chamber 51 is adapted to be disposed on a hub 72 of the wind turbine, and the branch chamber 51 is respectively communicated with the liquid supply main channel and the plurality of liquid supply branch channels. The high-temperature cooling liquid enters the liquid supply main channel, then enters the diversion cavity 51, flows into each liquid supply branch channel through the diversion cavity, and the diversion cavity 51 plays a role in diversion. Of course, the branch liquid supply passages may be connected directly to the main liquid supply passage without providing the branch flow chamber 51.

In the present embodiment, the heat dissipation system further includes a confluence chamber 52, the confluence chamber 52 is adapted to be disposed on a hub 72 of the wind turbine, and the confluence chamber 52 is respectively communicated with the liquid return main channel and the plurality of liquid return branch channels. The low-temperature cooling liquid flowing out from each heat dissipation part enters the liquid return branch channels, then the low-temperature cooling liquid of each liquid return branch channel is converged into the converging cavity 52, and then flows into the liquid return main channel, and the converging cavity plays a role in converging. Of course, the manifold chamber 52 may not be provided, and the plurality of return branch passages may be directly connected to the return main passage.

In this embodiment, the heat dissipation system includes the liquid return pipe 30, the inner cavity of the liquid return pipe 30 forms a liquid return channel, a part of the liquid return pipe 30 is suitable for being disposed on the main shaft 81 of the wind turbine generator and forms a heat absorption pipe, the heat absorption pipe can absorb heat on the main shaft and the bearing to cool the main shaft and the bearing, and the heat dissipation of the gear box, the main shaft and the bearing can be integrated into one set of heat dissipation system, so as to simplify the structure of the heat dissipation system and save the cost; and a liquid return channel is formed by the inner cavity of the liquid return pipe 30, and the liquid return pipe 30 sequentially penetrates through all parts, so that the sealing performance is improved. Alternatively, instead of the liquid return pipe 30, a groove may be directly formed on the main shaft, the blade, or other parts to form the liquid return passage, and the adjacent two parts may directly need to be provided with a connecting pipe and/or a sealing member.

In the embodiment, the heat dissipation system includes a liquid supply pipe 20, an inner cavity of the liquid supply pipe 20 forms a liquid supply channel, and the liquid supply pipe 20 is adapted to be disposed on the main shaft 81, the hub 72, the blades 71, and the components to be dissipated of the wind turbine. A liquid supply channel is formed through the inner cavity of the liquid supply pipe 20, and the liquid supply pipe 20 sequentially penetrates through all parts, so that the sealing performance is improved. Specifically, the liquid supply tube 20 is suitable for being arranged in the main shaft 81 and a part to be cooled in a penetrating mode, the structure is simplified, the length of the liquid supply tube is reduced, and cost is saved. Alternatively, instead of providing the supply tube 20, the supply channel may be formed by directly grooving the parts such as the main shaft, the blade, etc., and the adjacent two parts may directly require the provision of a connecting tube and/or a sealing member.

In the present embodiment, the heat dissipating member 10 is a heat dissipating pipe disposed in the inner cavity of the blade 71, which not only can ensure the power generating efficiency, but also can prevent the heat dissipating pipe from being damaged by lightning strike and other factors. Preferably, the radiating pipe extends along the length of the blade, and flows through the radiating pipe extending along the length direction of the blade, so that the radiating effect is good. As an alternative embodiment, the heat radiating member 10 is a heat radiating pipe provided on the surface of the blade 71. Preferably, radiating pipes are arranged on two surfaces of the blade 71, and the laying mode and the pipe diameter of the radiating pipes can be determined by integrating the aerodynamic performance influence and the icing-prone area of the blade.

In this embodiment, the coolant liquid is lubricating oil, treats that the heat dissipation part is gear box 90, and gear box 90's inner chamber forms the liquid chamber, and lubricating oil lubricates parts such as the gear in to the gear box, and the heat transfer in the gear box is lubricating oil, and lubricating oil is as cooling medium, and the gear box also can act as the oil tank, reduces the quantity of part, practices thrift the cost. Of course, the components to be cooled may be a generator or a frequency converter, the coolant may be a liquid such as water, and at this time, the inner cavity of the gear box 90 may not form a liquid cavity, and a liquid cavity needs to be separately provided.

In this embodiment, one circulation pump 40 is provided, the circulation pump 40 has a circulation inlet and a circulation outlet, the circulation inlet is connected to the liquid chamber, the circulation outlet is connected to the liquid supply inlet, and the circulation pump 40 is provided to reduce the cost.

In this embodiment, the circulation inlet and the liquid chamber are connected by a connection pipe 61, and the connection is easy. The bottom of the gear case 90 is provided with a connection through hole, which is connected with the connection pipe 61.

In this embodiment, the liquid supply tube 20 and the liquid return tube 30 are partially inserted into the input shaft of the gear box, the liquid supply tube 20 and the liquid return tube 30 on the main shaft 81, the input shaft of the gear box, the hub and the blades are all rotated synchronously with the main shaft, and the liquid supply tube 20, the connecting tube 61 and the circulating pump inserted into the box of the gear box and connected to the circulating pump 40 are not rotated. The input shaft of the gear box and the main shaft 81 are provided with through holes through which the liquid supply pipe 20 and the liquid return pipe 30 penetrate.

The working principle of the heat dissipation system is explained as follows:

when the heat dissipation system is in operation, the circulation pump 40 pumps the lubricating oil in the inner cavity 91 of the gear box 90 into the liquid supply pipe 20, and the hot oil is shunted to the heat dissipation pipe in the inner cavity of each blade 71 through the shunting cavity 51; under the action of forced convection of the incoming air, the hot oil in the heat dissipation pipe is gradually cooled, is gathered in the confluence cavity 52 and enters the liquid return pipe 30; the liquid return pipe in the main shaft 81 forms the heat absorption pipe 31 for dissipating heat of the main shaft 81 and the bearing 82; after absorbing part of the heat, the cold oil in the liquid return pipe 30 enters the inner cavity 91 of the gear box 90 along the main shaft, and the heat in the gear box 90 is transferred to the lubricating oil, so that the temperature in the inner cavity 91 of the gear box is reduced.

It should be noted that the black dotted line with solid arrows in fig. 1 indicates the liquid supply tube 20, the black dotted line with hollow arrows in fig. 1 indicates the liquid return tube 30, and the black dotted line without arrows in fig. 1 indicates the connection tube 61.

Example two

As shown in fig. 2, the heat dissipation system of the wind turbine generator in the second embodiment is different from the first embodiment in the number of the circulation pumps, in the second embodiment, two circulation pumps are provided, namely, a first circulation pump 41 and a second circulation pump 42, the first circulation pump 41 is disposed on the liquid supply pipe 20, the second circulation pump 42 is disposed on the liquid return pipe 30, and the heat dissipation pipe, the liquid supply pipe, the liquid return pipe, the first circulation pump 41 and the second circulation pump 42 move along with the main shaft at the same rotation speed.

The flow dividing chamber and the flow converging chamber of the first embodiment are replaced by a first circulating pump 41 and a second circulating pump 42, the first circulating pump 41 is used for dividing and conveying liquid, and the second circulating pump 42 is used for converging and drawing liquid, so that the circulating flow of the cooling liquid in the whole heat dissipation system is realized.

In this embodiment, one end of the supply tube 20 protrudes into the liquid chamber, in other words, the supply inlet of the supply tube 20 is arranged directly in the inner chamber of the gearbox.

The present invention also provides a wind power generator, comprising: the heat dissipation system is provided. The cooling system dissipates heat through the cooling tubes arranged in the inner cavities of the blades, so that the gear box, the main shaft and the bearing are dissipated heat, the cooling system cools cooling liquid through air, the heat dissipation efficiency of the cooling system is improved, stable operation of the wind driven generator is guaranteed, electric energy consumption is avoided, the structure is simpler, the operation cost and the equipment cost are low, ice on the surfaces of the blades can be heated in winter, and the blade icing phenomenon is avoided.

In this embodiment, the wind turbine further includes a machine body 100, a generator, a plurality of blades 71, a hub 72, a main shaft 81, a bearing 82, a gearbox 90, and the like, where the machine body 100 has a nacelle, the main shaft 81 is installed in the nacelle through the bearing 82, the generator is installed in the nacelle, the plurality of blades 71 are installed on the hub 72, one end of the main shaft 81 extends out of the nacelle and is connected to the hub 72, the other end of the main shaft 81 is connected to an input shaft of the gearbox 90, an output shaft of the gearbox 90 is connected to a rotating shaft of the generator, under the action of wind, the plurality of blades 71 rotate to further drive the main shaft 81 to rotate, and then the generator is driven to generate electricity through acceleration of the gearbox 90.

In the present embodiment, the gear box 90 includes a case, a primary gear train 92 and a secondary gear train 93, and the primary gear train 92 and the secondary gear train 93 are installed in the case. The gear box is of a structure in the prior art, and detailed description is omitted.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

1. the heat dissipation system comprises a heat dissipation pipe, a liquid supply pipe 20, a liquid return pipe 30, an inner cavity 91 of the gear box, a circulating pump, a diversion cavity 51, a confluence cavity 52, a connecting pipe 61 and the like, wherein the liquid supply pipe 20, the diversion cavity, the heat dissipation pipe, the confluence cavity, the liquid return pipe 30, the inner cavity 91 of the gear box, the connecting pipe 61 and the circulating pump form a closed liquid path circulation; the radiating pipes arranged on the surfaces of the blades can inhibit the formation of surface ice accumulation in winter, so that the radiating system has the deicing and anti-icing effects, and the practical value is higher.

2. The liquid return pipe 30 is partially arranged on the main shaft 81 of the wind driven generator and forms a heat absorption pipe, the heat absorption pipe can absorb heat on the main shaft and the bearing and can dissipate heat of the main shaft and the bearing, the gear box, the main shaft and the bearing share a set of heat dissipation system, and a cooling medium is lubricating oil in the gear box.

3. Except for the connecting pipe 61 and the circulating pump, the radiating pipe, the flow dividing cavity, the flow converging cavity, the liquid supply pipe and the liquid return pipe are all synchronously rotated with the main shaft, and the connecting points for rotating and fixing the pipeline are all placed in the inner cavity of the gear box, so that the problem of dynamic sealing cannot be solved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.