Wind turbine generator cabin integrated water cooling system and wind power motor

Abstract

The invention relates to the technical field of wind power, in particular to a wind turbine generator unit cabin integrated water cooling system and a wind power motor. The wind turbine generator cabin integrated water cooling system comprises a pump set unit, a temperature adjusting unit, a liquid supply pipe set and a water cooling pipe set. The pump set unit and the temperature adjusting unit are both arranged on the liquid supply pipe set, the water cooling pipe set communicates with a cooling pipeline of the wind turbine generator, and the liquid supply pipe set communicates with the water cooling pipe set to form a cooling liquid circulation loop. Wherein the pump set unit comprises a pump station and a mechanical water pump, the pump station is connected with the mechanical water pump in parallel, and the mechanical water pump is in transmission connection with a generator shaft or a main shaft of the wind turbine generator. The wind turbine generator cabin integrated water cooling system is applied to a wind power motor, and the mechanical water pump is combined with the pump station, so that the electric energy consumption can be reduced, and meanwhile, the heat generated by the operation of the wind turbine generator can be treated in a centralized manner, so that the structure of the cooling system can be optimized, and the operation cost and the maintenance difficulty can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power, and in particular to a wind turbine nacelle integrated water cooling system and a wind turbine. Background Art

[0002] At present, most large-megawatt wind turbines adopt the E-Top solution. The cabin is equipped with heat-generating equipment such as gearboxes, generators, converters and transformers. These devices have a large demand for heat dissipation during use. The solution adopted by the existing technology is that each device uses an independent cooling system with its own pump station, which leads to a complex cooling system structure, high power consumption, high difficulty in installation and maintenance, and high heat dissipation costs. Summary of the invention

[0003] The purpose of the present invention includes providing a wind turbine nacelle integrated water cooling system and a wind turbine, wherein the combination of a mechanical water pump and a pump station can reduce electricity consumption, and at the same time can centrally process the heat generated by the operation of the wind turbine, thereby optimizing the structure of the cooling system and reducing operating costs and maintenance difficulties.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] In a first aspect, the present invention provides a wind turbine nacelle integrated water cooling system, the wind turbine nacelle integrated water cooling system comprising a pump unit, a temperature control unit, a liquid supply pipe group and a water cooling pipe group;

[0006] The pump unit and the temperature control unit are both arranged in the liquid supply pipe group, the water cooling pipe group is connected with the cooling pipeline of the wind turbine, and the liquid supply pipe group is connected with the water cooling pipe group to form a coolant circulation loop;

[0007] The pump unit includes a pump station and a mechanical water pump. The pump station is connected in parallel with the mechanical water pump, and the mechanical water pump is drivingly connected to the generator shaft or the main shaft of the wind turbine.

[0008] In an optional embodiment, the temperature adjustment unit includes an external heat exchanger and a heater;

[0009] The liquid supply pipe group includes a flow guiding pipeline, a heat exchange pipeline and a heating pipeline, and the flow guiding pipeline, the heat exchange pipeline and the heating pipeline are connected in sequence;

[0010] Among them, the pump unit is arranged in the diversion pipeline, the external heat exchanger is arranged in the heat exchange pipeline, and the heater is arranged in the heating pipeline.

[0011] In an optional embodiment, the heat exchange pipeline and the heating pipeline are respectively provided with a first temperature sensor and a second temperature sensor.

[0012] In an optional embodiment, the liquid supply pipe group further includes a parallel branch, and the parallel branch is connected in parallel with the heat exchange pipe.

[0013] In an alternative embodiment, the water-cooling pipe group includes a diverter and diversion pipes; the diverter is in communication with the diversion pipes, and the diverter is in communication with the heating pipeline, and the diversion pipes are in communication with the diversion pipeline;

[0014] Among them, the diversion pipes are in communication with the cooling pipelines of the wind turbine.

[0015] In an alternative embodiment, the water-cooling pipe group includes a main return pipe and a plurality of diversion pipes;

[0016] The plurality of diversion pipes are arranged in parallel and are in communication with the diversion pipeline through the main return pipe;

[0017] Among them, each diversion pipe is correspondingly in communication with a sub-cooling pipeline of a wind turbine.

[0018] In an alternative embodiment, a third temperature sensor is provided on the main return pipe.

[0019] In an alternative embodiment, the wind turbine includes four sub-cooling pipelines, which are respectively arranged in the converter, transformer, generator, and nacelle heat exchanger of the wind turbine;

[0020] The water-cooling pipe group includes four diversion pipes, and the four diversion pipes are respectively correspondingly in communication with a sub-cooling pipeline.

[0021] In an alternative embodiment, the cooling pipeline of the gearbox of the wind turbine is connected in series to the diversion pipe corresponding to the generator.

[0022] In a second aspect, the present invention provides a wind power generator, which includes a wind turbine, a nacelle, and the above-mentioned integrated water-cooling system for the wind turbine nacelle;

[0023] The wind turbine is connected to the nacelle, and the integrated water-cooling system for the wind turbine nacelle is in communication with the cooling pipelines of the wind turbine, and the external heat exchanger of the integrated water-cooling system for the wind turbine nacelle is placed outside the nacelle.

[0024] The beneficial effects of the integrated water-cooling system for the wind turbine nacelle and the wind power generator provided by the embodiments of the present invention include:

[0025] The wind turbine cabin integrated water cooling system includes a pump unit, a temperature regulating unit, a liquid supply pipe group and a water cooling pipe group; the pump unit and the temperature regulating unit are both arranged in the liquid supply pipe group, the water cooling pipe group is connected with the cooling pipeline of the wind turbine, and the liquid supply pipe group is connected with the water cooling pipe group to form a coolant circulation loop; wherein, the pump unit includes a pump station and a mechanical water pump, the pump station is connected in parallel with the mechanical water pump, and the mechanical water pump is connected with the generator shaft or its main shaft of the wind turbine. The wind turbine cabin integrated water cooling system is applied to wind turbines, and the combination of the mechanical water pump and the pump station can reduce the power consumption, and at the same time can centrally process the heat generated by the operation of the wind turbine, thereby optimizing the structure of the cooling system and reducing the operation cost and maintenance difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of the wind turbine nacelle integrated water cooling system provided in this embodiment;

[0028] Figure 2 A schematic diagram of the structure of the wind turbine provided in this embodiment from a first viewing angle;

[0029] Figure 3 A schematic diagram of the structure of the wind turbine provided in this embodiment from a second viewing angle;

[0030] Figure 4 for Figure 3 Partial view at point A in the middle.

[0031] Icons: 100-integrated water cooling system for wind turbine cabin; 110-pump unit; 120-temperature control unit; 130-liquid supply pipe group; 140-water cooling pipe group; 111-pump station; 112-mechanical water pump; 121-external heat exchanger; 122-heater; 131-flow guide pipe; 132-heat exchange pipe; 133-heating pipe; 134-parallel branch; 135-three-way valve; 141-diverter; 142-diverter pipe; 143-return main pipe; 200-wind turbine; 210-cabin; 220-wind turbine; 221-converter; 222-transformer; 223-generator; 224-cabin heat exchanger; 225-gearbox; 201-main shaft. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention generally described and illustrated in the drawings herein can be arranged and designed in a variety of different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0034] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0035] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships in which the inventive product is customarily placed during use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0036] In addition, terms such as "first", "second", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0037] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0038] Since the offshore wind turbine 220 has strict requirements for the sealing performance of the nacelle 210, the thermal management problems inside the nacelle 210 and for large components are one of the difficult problems in the current development of wind power technology. Currently, the structural layout simplification, weight reduction, and low-cost requirements of large-megawatt offshore wind turbines are required for current market competition. Therefore, advanced heat dissipation technology solutions play a key role in the application of large-megawatt offshore wind turbines. However, the existing solution is that each device inside the nacelle 210 uses an independent cooling system with its own pumping station 111, resulting in complex pipelines, large occupied space, high installation and maintenance difficulty, and high cost.

[0039] For the above reasons, please refer to Figures 1-4, this embodiment provides a wind turbine nacelle integrated water cooling system 100, the wind turbine nacelle integrated water cooling system 100 includes a pump unit 110, a temperature control unit 120, a liquid supply pipe group 130 and a water cooling pipe group 140;

[0040] The pump unit 110 and the temperature control unit 120 are both arranged in the liquid supply pipe group 130, the water cooling pipe group 140 is connected with the cooling pipeline of the wind turbine 220, and the liquid supply pipe group 130 is connected with the water cooling pipe group 140 to form a cooling liquid circulation loop;

[0041] The pump unit 110 includes a pump station 111 and a mechanical water pump 112 . The pump station 111 and the mechanical water pump 112 are connected in parallel, and the mechanical water pump 112 is drivingly connected to the generator 223 shaft of the wind turbine 220 or its main shaft 201 .

[0042] It should be noted that this embodiment is described by taking the wind turbine nacelle integrated water cooling system 100 applied to an offshore large-megawatt medium-speed permanent magnet wind turbine 220 as an example, but the wind turbine nacelle integrated water cooling system 100 can also be applied to other types of wind turbines 223.

[0043] Please refer to Figures 1-4 The working principle of the wind turbine nacelle integrated water cooling system 100 is:

[0044] The wind turbine nacelle integrated water cooling system 100 comprises a pump unit 110, a temperature control unit 120, a liquid supply pipe group 130 and a water cooling pipe group 140;

[0045] Among them, the pump unit 110 and the temperature regulating unit 120 are both arranged in the liquid supply pipe group 130, the water cooling pipe group 140 is connected with the cooling pipeline of the wind turbine 220, and the liquid supply pipe group 130 is connected with the water cooling pipe group 140 to form a coolant circulation loop; thus, through the aforementioned structural setting code, the coolant circulates in the coolant circulation loop through the pump unit 110, thereby taking out the heat generated by the operation of the wind turbine 220, and the temperature regulating unit 120 can release the heat generated by the operation of the wind turbine 220 to the outside during operation, and can also increase the temperature of the coolant to ensure that the operating temperature of the wind turbine 220 is normal;

[0046] The pump unit 110 includes a pump station 111 and a mechanical water pump 112. The pump station 111 is connected in parallel with the mechanical water pump 112, and the mechanical water pump 112 is drivingly connected to the generator 223 shaft or its main shaft 201 of the wind turbine unit 220. In this way, according to the operating state of the wind turbine unit 220, the pump station 111 and the mechanical water pump 112 can be connected in parallel and operate simultaneously to ensure its heat dissipation effect, or according to its operating state, either the pump station 111 or the mechanical water pump 112 can be selected to operate to reduce its operating power, which is beneficial to flexibly adjust its operating energy consumption, and further can reduce the operating energy consumption of the system;

[0047] In summary, the integrated water-cooling system 100 for the nacelle of the wind turbine unit is applied to the wind turbine 200. Through this system, the heat generated during the operation of the wind turbine unit 220 can be centrally processed, and further, through the operation of this set of cooling system, the heat dissipation and cooling of each component of the wind turbine unit 220 can be realized. Compared with the prior art in which each structure of the wind turbine unit 220 is independently provided with a cooling system, the integrated water-cooling system 100 for the nacelle of the wind turbine unit can use a set of systems to perform integrated cooling on the wind turbine unit 220, which is beneficial to optimizing its system structure, reducing the structure and pipeline settings of its cooling system, making its structure simpler and more compact, and being beneficial to reducing its use cost and maintenance difficulty;

[0048] At the same time, it adopts the way that the pump station 111 is connected in parallel with the mechanical water pump 112, and the mechanical water pump 112 is drivingly connected to the generator 223 shaft or its main shaft 201 of the wind turbine unit 220. Furthermore, the system can flexibly adjust the operating state of its pump unit 110 according to the operating state of the wind turbine unit 220. Moreover, the mechanical water pump 112 in its pump unit 110 can adopt the way of being drivingly connected to the generator 223 shaft or its main shaft 201. Furthermore, the mechanical water pump 112 can utilize the torque input when the blades of the wind turbine unit 220 rotate as the power source of the mechanical water pump 112, which is beneficial to reducing its operating energy consumption and improving its operating flexibility.

[0049] Further, please refer to Figures 1-4 In this embodiment, when configuring the temperature control unit 120, it includes an external heat exchanger 121 and a heater 122; the liquid supply pipe group 130 includes a diversion pipeline 131, a heat exchange pipeline 132, and a heating pipeline 133. The diversion pipeline 131, the heat exchange pipeline 132, and the heating pipeline 133 are connected in sequence; among them, the pump unit 110 is arranged on the diversion pipeline 131, the external heat exchanger 121 is arranged on the heat exchange pipeline 132, and the heater 122 is arranged on the heating pipeline 133.

[0050] With such a setting method, the pump unit 110 can pump the coolant in the diversion pipeline 131 and the coolant flowing back to the diversion pipeline into the heat exchange pipeline 132 and the heating pipeline 133, and then introduce it into the wind turbine unit 220; moreover, during the operation of the system, the working state of the external heat exchanger 121 on the heat exchange pipeline 132 and the operating state of the heater 122 on the heating pipeline 133 can be adjusted according to the temperature of the coolant in the pipeline, so that the coolant can be adjusted to an appropriate temperature before being transported to the wind turbine unit 220.

[0051] Moreover, during the operation, in order to enable the coolant pumped out by the pump unit 110 to be transported to the heating pipeline 133 without passing through the external heat exchanger 121 to improve the operation efficiency, therefore, the liquid supply pipe group 130 further includes a parallel branch 134, and the parallel branch 134 is parallel to the heat exchange pipeline 132, so that the coolant in the diversion pipeline 131 can flow to the heating pipeline 133 through the parallel branch 134.

[0052] In order to detect the temperature of the coolant in the liquid supply pipeline, so as to adjust the coolant flow state of the external heat exchanger 121 and the working state of the heater 122, therefore, a first temperature sensor and a second temperature sensor are respectively arranged on the heat exchange pipeline 132 and the heating pipeline 133. By such a setting method, multi-point temperature detection is formed, and then based on the temperature detection, closed-loop temperature control can be realized. Moreover, such a setting method is beneficial to improving the heat dissipation efficiency of the wind turbine unit 220. At the same time, the working state of the heater 122 and the conduction state of the parallel branch 134 can be adjusted according to requirements, which is beneficial to reducing its operation energy consumption.

[0053] It should be noted that in order to enable the external heat exchanger 121 on the heat exchange pipeline 132 to be parallel to the parallel branch 134, therefore, a three-way valve 135 is configured at the connection of the diversion pipeline 131 and the heat exchange pipeline 132. The three interfaces of the three-way valve 135 are respectively communicated with the diversion pipeline 131, the heat exchange pipeline 132 and the parallel branch 134, and the diversion pipeline 131 can be selectively communicated with the heat exchange pipeline 132 and the parallel branch 134 through the adjustment and control of the three-way valve 135.

[0054] When configuring the water-cooling pipe group 140, in order to enable the coolant in the liquid supply pipe group 130 to be transported to the wind turbine unit 220 and be shunted to each structure of the wind turbine unit 220, therefore, the water-cooling pipe group 140 includes a shunt 141 and a shunt pipe 142; the shunt 141 is communicated with the shunt pipe 142, and the shunt 141 is communicated with the heating pipeline 133, and the shunt pipe 142 is communicated with the diversion pipeline 131; wherein, the shunt pipe 142 is communicated with the cooling pipeline of the wind turbine unit 220.

[0055] Based on the structure of the above-mentioned flow divider 141, in order to meet the heat dissipation requirements of various structures in the wind turbine 220, therefore, the water cooling pipe group 140 includes a return main pipe 143 and a plurality of flow divider pipes 142; the plurality of flow divider pipes 142 are arranged in parallel and are connected to the diversion pipeline 131 through the return main pipe 143; wherein, each flow divider pipe 142 corresponds to and is connected to a sub-cooling pipeline of a wind turbine 220. Thus, through such a setting method, each flow divider pipe 142 can correspond to and be connected to a sub-cooling pipeline of a wind turbine 220, and the various flow divider pipes 142 are in parallel, so that centralized heat dissipation and cooling of the wind turbine 220 can be achieved in this way. Moreover, in order to detect the temperature of the returned coolant, so as to make a comprehensive judgment with the temperatures detected by the aforementioned first temperature sensor and second temperature sensor, and thus adjust the working states of the heater 122 and the external heat exchanger 121, therefore, a third temperature sensor is provided on the return main pipe 143.

[0056] Specifically, please refer to Figures 1-4 , in this embodiment, it is described by taking the wind turbine 220 including four sub-cooling pipelines as an example, and the four sub-cooling pipelines are respectively arranged in the converter 221, transformer 222, generator 223 and nacelle heat exchanger 224 of the wind turbine 220; thus, correspondingly, the water cooling pipe group 140 includes four flow divider pipes 142, and the four flow divider pipes 142 are respectively connected to a sub-cooling pipeline. In addition, in the case of configuring two converters 221, the number of flow divider pipes 142 is increased, and in this embodiment, when cooling the gearbox 225, the cooling pipeline of the gearbox 225 of the wind turbine 220 is connected in series to the flow divider pipe 142 corresponding to the generator 223, so as to improve the heat dissipation efficiency in this way.

[0057] It should be noted that during the flow division process of the above-mentioned flow divider pipes 142, the structures of the flow divider 141 and the flow divider pipes 142 can be adjusted according to actual situations. For example: in this embodiment, a disc flow divider 141 is used for flow division and heat dissipation, and the flow rate of this flow divider 141 is directly determined by the pipe diameter. In other embodiments of the present invention, if it is necessary to control the switch and the flow rate, the structure can also be adjusted according to the specific situation of the project.

[0058] Based on the above content, please refer to Figures 1-4 , the nacelle integrated water cooling system 100 of the wind turbine can adjust its operating state according to the operating conditions of the wind turbine 220 and in combination with the temperature detection in the system. Its operating state can be automatically adjusted by configuring a controller and embedding an operating program in its controller, or can be manually adjusted by means such as manual or remote control. Specifically, the nacelle integrated water cooling system 100 of the wind turbine has at least an internal circulation and an external circulation mode;

[0059] Internal circulation mode: when the temperature of the liquid inlet end of each structure of the wind turbine 220 is lower than the minimum liquid supply temperature requirement, or the heater 122 is in operation, the three-way valve 135 connects the diversion pipeline 131 with the parallel branch 134, so that the coolant in the diversion pipeline 131 is introduced into the heating pipeline 133 through the parallel branch 134, and then the coolant is transported to the diverter 141 through the heating pipeline 133, and after being transported to each sub-cooling pipeline of the wind turbine 220 through each diverter pipe 142, it converges to the return main pipe 143, and enters the diversion pipeline 131 to complete a single cycle, and according to this path, it circulates according to the aforementioned path under the action of the pump unit 110, that is, under the action of the pump unit 110, the diverter 141 is used to supply liquid to each device, and the branches of the heated coolant converge and return to the mechanical water pump 112 and the pump station 111, and the cycle continues;

[0060] External circulation mode: When the temperature of the liquid inlet end of each structure of the wind turbine 220 is higher than the minimum liquid supply temperature requirement and the heater 122 is not running, the three-way valve 135 connects the guide pipe 131 with the heat exchange pipe 132, so that the coolant in the guide pipe 131 is introduced into the heating pipe 133 through the heat exchange pipe 132, and heat is exchanged in the heat exchange pipe 132, and the heat therein is dissipated to the outside, thereby cooling down, and then the coolant is transported to the diverter 141 through the heating pipe 133, and the heat exchange is cooled down. The coolant is then supplied to each device through the diverter 141, and after being transported to the various sub-cooling pipelines of the wind turbine unit 220 through the diverter pipes 142, it converges into the return main pipe 143, and enters the guide pipeline 131 to complete a single cycle. It circulates along this path according to the aforementioned path under the action of the pump unit 110, that is, under the action of the pump unit 110, the diverter 141 is used to supply liquid to each device, and the heated coolant branches converge and return to the mechanical water pump 112 and the pump station 111, and the cycle is repeated.

[0061] Moreover, in this embodiment, it can be known from the above contents that the mechanical water pump 112 is in driving connection with the generator 223 shaft or its main shaft 201 of the wind turbine 220. The mechanical water pump 112 comprises a pump body, a drive shaft, a fan blade, a liquid outlet, a liquid inlet and a flow meter, etc. When its drive shaft is connected to the generator 223 shaft, centrifugal force can be used to drive the water cooling liquid to flow, which is simple and reliable and can reduce the power consumption of the equipment.

[0062] In addition, during the operation of the pump unit 110, the mechanical water pump 112 and the pump station 111 can be connected in parallel. At this time, the mechanical water pump 112 serves as the main driving force of the system circulation, while the pump station 111 serves as an auxiliary driving force.

[0063] When the wind turbine 220 is running at low power, the mechanical water pump 112 rotates at low speed along with the shaft of the generator 223, and the flow rate required by the water cooling system can be driven by the mechanical water pump 112, thereby reducing the power consumption of the system;

[0064] When the fan power increases continuously, the mechanical water pump 112 rotates faster along with the generator 223 shaft, but the flow required by the water cooling system cannot be fully satisfied by the mechanical water pump 112. At this time, the pump station 111 can be connected in parallel to meet the flow required by the whole system.

[0065] That is, it can be known from the above content that the heat generated by the operation of the wind turbine 220 can be centrally processed through the system, and then the heat dissipation and cooling of each component of the wind turbine 220 can be realized through the operation of the cooling system. Compared with the method in the prior art that each structure of the wind turbine 220 is independently provided with a cooling system, the wind turbine nacelle integrated water cooling system 100 can use a set of systems to perform integrated cooling and cooling of the wind turbine 220, which is conducive to optimizing its system structure, reducing the structure and pipeline setting of its cooling system, so that its structure is simpler and more compact, and is conducive to reducing its use cost and maintenance difficulty;

[0066] Moreover, the system adopts a method in which the pump station 111 is connected in parallel with the mechanical water pump 112, and the mechanical water pump 112 is connected to the generator 223 shaft or its main shaft 201 of the wind turbine 220 by transmission, so that the system can flexibly adjust the operating state of its pump unit 110 according to the operating state of the wind turbine 220, that is, the mechanical water pump 112 operates independently, and the mechanical water pump 112 and the pump station 111 are synchronously operated in parallel, and the mechanical water pump 112 in its pump unit 110 can be connected to the generator 223 shaft or its main shaft 201 by transmission, so that the mechanical water pump 112 can use the torque input when the blades of the wind turbine 220 rotate as the power source of the mechanical water pump 112, which is beneficial to reduce its operating energy consumption and improve its operating flexibility.

[0067] Based on the above, please refer to Figures 1-4 , this embodiment further provides a wind turbine 200, the wind turbine 200 comprises a wind turbine set 220, a nacelle 210 and the wind turbine set nacelle integrated water cooling system 100;

[0068] The wind turbine 220 is connected to the nacelle 210 , and the wind turbine nacelle integrated water cooling system 100 is in communication with the cooling pipeline of the wind turbine 220 . The external heat exchanger 121 of the wind turbine nacelle integrated water cooling system 100 is disposed outside the nacelle 210 .

[0069] The wind turbine 223 adopts the above-mentioned integrated water-cooling system 100 for the nacelle of the wind turbine unit and has all the advantages of the integrated water-cooling system 100 for the nacelle of the wind turbine unit.

[0070] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A wind turbine nacelle integrated water cooling system, characterized in that: The wind turbine nacelle integrated water cooling system comprises a pump unit, a temperature control unit, a liquid supply pipe group and a water cooling pipe group; The pump unit and the temperature control unit are both arranged in the liquid supply pipe group, the water cooling pipe group is connected with the cooling pipeline of the wind turbine, and the liquid supply pipe group is connected with the water cooling pipe group to form a coolant circulation loop; Wherein, the pump unit comprises a pump station and a mechanical water pump, the pump station is connected in parallel with the mechanical water pump, and the mechanical water pump is drivingly connected to the generator shaft or the main shaft of the wind turbine.

2. The wind turbine nacelle integrated water cooling system according to claim 1, characterized in that: The temperature adjustment unit includes an external heat exchanger and a heater; The liquid supply pipe group includes a flow guiding pipeline, a heat exchange pipeline and a heating pipeline, and the flow guiding pipeline, the heat exchange pipeline and the heating pipeline are connected in sequence; Wherein, the pump unit is arranged in the flow guide pipeline, the external heat exchanger is arranged in the heat exchange pipeline, and the heater is arranged in the heating pipeline.

3. The wind turbine nacelle integrated water cooling system according to claim 2, characterized in that: The heat exchange pipeline and the heating pipeline are respectively provided with a first temperature sensor and a second temperature sensor.

4. The wind turbine nacelle integrated water cooling system according to claim 2, characterized in that: The liquid supply pipe group also includes a parallel branch, and the parallel branch is connected in parallel with the heat exchange pipeline.

5. The wind turbine nacelle integrated water cooling system according to claim 2, characterized in that: The water cooling pipe group includes a flow divider and a flow divider pipe; the flow divider is in communication with the flow divider pipe, the flow divider is in communication with the heating pipeline, and the flow divider pipe is in communication with the flow guide pipeline; Wherein, the shunt pipe is communicated with the cooling pipeline of the wind turbine generator set.

6. The wind turbine nacelle integrated water cooling system according to claim 5, characterized in that: The water cooling pipe group includes a reflux main pipe and a plurality of branch pipes; A plurality of the flow diversion pipes are arranged in parallel and are connected to the flow guide pipeline through the return main pipe; Wherein, each of the shunt pipes is connected to a corresponding sub-cooling pipeline of the wind turbine generator set.

7. The wind turbine nacelle integrated water cooling system according to claim 6, characterized in that: The reflux main pipe is provided with a third temperature sensor.

8. The wind turbine nacelle integrated water cooling system according to claim 6, characterized in that: The wind turbine generator set comprises four sub-cooling pipelines, which are respectively arranged in the converter, transformer, generator and cabin heat exchanger of the wind turbine generator set; The water cooling pipe group includes four shunt pipes, and the four shunt pipes are respectively connected to one of the sub-cooling pipelines.

9. The wind turbine nacelle integrated water cooling system according to claim 8, characterized in that: The cooling pipeline of the gearbox of the wind turbine generator set is connected in series to the shunt pipe corresponding to the generator.

10. A wind turbine, characterized in that: The wind turbine comprises a wind turbine set, a nacelle and a wind turbine set nacelle integrated water cooling system according to any one of claims 1 to 9; The wind turbine set is connected to the nacelle, and the wind turbine set nacelle integrated water cooling system is in communication with a cooling pipeline of the wind turbine set, and an external heat exchanger of the wind turbine set nacelle integrated water cooling system is disposed outside the nacelle.

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