CN218844503U - Engine room cooling system of wind generating set - Google Patents

Abstract

The utility model provides a wind generating set cabin cooling system, including central pivot, the fixed a plurality of fan blades that are provided with in one side of center pivot, the center pivot is kept away from the fixed cabin that is provided with in one side of fan blade, the fixed pylon that is provided with in below in cabin, the outer lane in cabin is provided with the water-cooling chamber, the outer lane in water-cooling chamber is provided with the air-cooling chamber, the top fixed mounting in cabin has water cooling plant, water cooling plant includes header tank, water catch bowl and lower water catch bowl and first rotary rod, support fixed mounting is passed through to the bottom of header tank in the top in air-cooling chamber, the delivery port of water catch bowl with the sealed intercommunication of water inlet of header tank. The utility model discloses guarantee all the time that at least one mode can cool off the cabin to the temperature of having guaranteed the cabin is all the time in the within range of regulation, guaranteed that mechanical equipment in the cabin can normal use, the equipment harm of avoiding high temperature to lead to has prolonged its life simultaneously.

Description

Engine room cooling system of wind generating set

Technical Field

The utility model relates to a aerogenerator cools off technical field, specifically is a wind generating set cabin cooling system.

Background

For wind power plants, the cooling requirements are relatively high due to the presence of more heat generating components inside the nacelle, such as generators, converters, etc. The most common cooling solution for the cabin interior is to provide a cooling system. The cooling system is internally provided with a cooling liquid which circulates and flows for exchanging heat with the air inside the cabin and large heat generating components.

There are many researches about wind generating set cabin cooling system among the prior art, for example, application publication No. CN 112502917A's cabin cooling system reaches wind generating set including it, this cooling system is through on its circulative cooling system's basis, set up one and strengthen cooling system, strengthen the cooling to its empty water radiator that is located the cabin outside, and should strengthen cooling system and carry out the rainwater through spray set to the surface of empty water radiator and spray, because moisture evaporation can absorb more heat, and combine the stronger wind-force of cabin top to blow, consequently, can produce better cooling effect, rainwater collection device then can directly utilize the rainwater as the coolant liquid, do not need the manual work to carry out the coolant liquid to supply, suitable for local conditions, facilitate the use, when having improved radiator cooling effect, still do benefit to cost control, reduce the installation degree of difficulty.

However, the following significant disadvantages exist: according to the above statement, the cooling system is to strengthen and cool the empty water radiator outside the cabin, so the heat dissipation effect inside the cabin is not obvious, and at the same time, rain is a natural phenomenon, rain can not be rained for a plurality of days continuously, and the rain water is slowly reduced until the rain water is consumed along with the rain water spraying and the evaporation of the high-temperature rain water, and at the later stage, if no cooling water is supplied, the cabin cooling system is disabled.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wind generating set cabin cooling system to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a wind generating set cabin cooling system comprises a central rotating shaft, wherein a plurality of fan blades are fixedly arranged on one side of the central rotating shaft, a cabin is fixedly arranged on one side, away from the fan blades, of the central rotating shaft, a tower frame is fixedly arranged below the cabin, a water cooling cavity is arranged on the outer ring of the cabin, a wind cooling cavity is arranged on the outer ring of the water cooling cavity, a water cooling device is fixedly arranged at the top of the cabin and comprises a water collecting tank, a lower water tank and a first rotating rod, the bottom of the water collecting tank is fixedly arranged at the top of the wind cooling cavity through a support, the water outlet of the water collecting tank is hermetically communicated with the water inlet of the water collecting tank, the water inlet of the lower water tank is hermetically communicated with the water outlet of the water collecting tank, the water outlet of the lower water tank is communicated with the water inlet of the water cooling cavity, one end of the first rotating rod penetrates through the outer wall of the water tank and is fixedly connected with the first wind blades, the other end of the first rotating rod extends to the inner wall of the water collecting tank and is fixedly connected with a plurality of stirring blades, and one side, which is close to the fan blades, and is provided with an air cooling exhaust cavity;

a water storage tank is fixedly mounted on the outer wall of the tower and below the cabin, a water inlet tank of the water storage tank is hermetically communicated with a water outlet of the water cooling cavity, a water outlet of the water storage tank is hermetically connected with one end of a circulating water pipe, the other end of the circulating water pipe is hermetically communicated with a lower water tank, a vertical rod is connected in the water storage tank in a sliding manner, a driving rod is fixedly connected to one side of the vertical rod, one end, far away from the vertical rod, of the driving rod penetrates through the tower and is fixedly connected with an electric push rod, and the electric push rod is mounted on the outer wall of the tower;

the side fixed mounting refrigeration bellows of forced air cooling chamber, first cavity and second cavity have been seted up to refrigeration bellows inside, the air cooler is installed to the longitudinal symmetry in the first cavity, the central point of first cavity puts and wears to be equipped with the second rotary rod, second rotary rod one end extends to first cavity outer wall and second pneumatic blade fixed connection, the other end extends to inside and third pneumatic blade fixed connection of second cavity, first cavity is close to the one side longitudinal symmetry of second pneumatic blade has seted up the fresh air inlet, the exhaust vent has been seted up to the longitudinal symmetry between first cavity and the second cavity, the second cavity is close to one side of forced air cooling chamber with forced air cooling chamber intercommunication.

Preferably, a bump is arranged right below the water inlet of the water cooling cavity.

Preferably, a dust screen is fixedly installed in the water collecting tank.

Preferably, a plurality of heat dissipation holes are formed in the top of the water collecting tank.

Preferably, a first rotating bearing is arranged at the joint of the first rotating rod and the water collecting tank, and the first rotating rod penetrates through the first rotating bearing.

Preferably, the sewer pipe of the sewer tank is provided with an electromagnetic valve.

Preferably, the sewer pipe of the water inlet tank is provided with a one-way valve.

Preferably, a second rotating bearing is arranged at the joint of the second rotating rod and the first and second cavities, and the second rotating rod is arranged in the second rotating bearing in a penetrating manner.

Preferably, a temperature sensor is mounted on the housing of the nacelle.

Preferably, a controller is mounted on an outer wall of the tower.

Compared with the prior art, the beneficial effects of the utility model are that:

rainwater flows to the water-cooling cavity from the water outlet of the lower water tank, and the water outlet of the lower water tank is arranged in the middle of the top of the water-cooling cavity, and a bump is arranged right below the water inlet of the water-cooling cavity, so that the rainwater flows downwards from two sides of the water-cooling cavity at the same time, the water quantity is equal, the surface cooling of the engine room is equalized, and the deformation of the engine room caused by uneven cooling and heating is avoided; in the process of flowing of rainwater, the rainwater exchanges heat with the engine room, the temperature of the surface of the engine room is reduced, and the rainwater takes away heat and flows to the water storage tank through the water inlet tank to be stored; meanwhile, natural wind blows a second wind driven blade to rotate, the second wind driven blade rotates to blow gas in the air into an air cooler, the gas is cooled through the air cooler, cold air is blown into an air cooling cavity through a third wind driven blade, and after flowing through the air cooling cavity, heat on the surface of the cabin and heat on the surface of a water cooling cavity are brought out of the air exhaust holes through the air exhaust holes, so that the cabin is further cooled; the water storage tank is used as auxiliary cooling equipment, the controller controls the electric push rod to be started, the electric push rod pushes the driving rod and the vertical rod to press cold water into the water discharging groove through the circulating water pipe, the cold water flows into the water cooling cavity through the water discharging groove, heat generated by mechanical work in the engine room is taken away by utilizing the flow of the water in the water cooling cavity, and the defect that the rainwater in the water collecting tank is used up due to long-time non-raining is overcome; even if the moisture in the water storage tank is evaporated, the air cooling device can be independently used for cooling the cabin, and at least one mode can be always ensured for cooling the cabin, so that the temperature of the cabin is always in the specified range, the mechanical equipment in the cabin can be normally used, the equipment damage caused by high temperature is avoided, and the service life of the air cooling device is prolonged.

Drawings

FIG. 1 is a side sectional view of the overall structure of the present invention;

FIG. 2 is an enlarged view of the connection relationship between the parts of the water cooling apparatus shown in FIG. 1;

FIG. 3 is an enlarged view of the connection relationship between the parts of the air cooling device at B in FIG. 1;

fig. 4 is an enlarged view of the connection relationship of the parts of the circulating cooling device at C in fig. 1 according to the present invention.

In the figure: the air cooling system comprises a central rotating shaft 1, fan blades 2, an engine room 3, a water cooling cavity 4, an air cooling cavity 5, a water cooling device 6, a water collecting tank 7, a water collecting tank 8, a water discharging tank 9, a first rotating rod 10, a support 11, a first air-operated blade 12, a stirring blade 13, a water storage tank 14, a circulating water pipe 15, a vertical rod 16, a driving rod 17, an electric push rod 18, a refrigerating air box 19, a first cavity 20, a second cavity 21, an air cooler 22, a second rotating rod 23, a second air-operated blade 24, a third air-operated blade 25, an air inlet 26, an air outlet 27, a bump 28, a dustproof screen 29, a heat dissipation hole 30, a first rotating bearing 31, an electromagnetic valve 32, a water inlet 33, a check valve 34, a second rotating bearing 35, a temperature sensor 36, a controller 37 and an air outlet 38.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The embodiment is as follows:

referring to fig. 1 to 4, the present invention provides a technical solution:

example 1:

a cabin cooling system of a wind generating set comprises a central rotating shaft 1, wherein a plurality of fan blades 2 are fixedly arranged on one side of the central rotating shaft 1, a cabin 3 is fixedly arranged on one side, away from the fan blades 2, of the central rotating shaft 1, a tower frame is fixedly arranged below the cabin 3, a water cooling cavity 4 is arranged on the outer ring of the cabin 3, and a wind cooling cavity 5 is arranged on the outer ring of the water cooling cavity 4; as shown in fig. 2, a water cooling device 6 is fixedly mounted at the top of the nacelle 3, the water cooling device 6 includes a water collecting tank 7, a water collecting tank 8, a lower water collecting tank 9 and a first rotating rod 10, the bottom of the water collecting tank 7 is fixedly mounted at the top of the air cooling chamber 5 through a bracket 11, a water outlet of the water collecting tank 8 is hermetically communicated with a water inlet of the water collecting tank 7, a water inlet of the lower water collecting tank 9 is hermetically communicated with a water outlet of the water collecting tank 7, a water outlet of the lower water collecting tank 9 is communicated with a water inlet of the water cooling chamber 4, one end of the first rotating rod 10 penetrates through the outer wall of the water collecting tank 7 and is fixedly connected with a first pneumatic blade 12, the other end extends to the inner wall of the water tank 5 and is fixedly connected with a plurality of stirring blades 13, a layer of sun screen covers the outer ring of the water storage tank 14, and the rising of water temperature and the evaporation of water can be slowed down through the sun screen;

as shown in fig. 1 and 4, a water storage tank 14 is fixedly mounted on the outer wall of the tower and below the cabin 3, a layer of sun-screening net covers the outer ring of the water storage tank 14, the rising of water temperature and the evaporation of water can be slowed down through the sun-screening net, a water inlet tank 33 of the water storage tank 14 is hermetically communicated with a water outlet of the water cooling cavity 4, the water outlet of the water storage tank 14 is hermetically connected with one end of a circulating water pipe 15, the other end of the circulating water pipe 15 is hermetically communicated with a water outlet tank 9, a vertical rod 16 is slidably connected inside the water storage tank 14, a driving rod 17 is fixedly connected to one side of the vertical rod 16, one end of the driving rod 17 far away from the vertical rod 16 penetrates through the tower and is fixedly connected with an electric push rod 18, and the electric push rod 18 is mounted on the outer wall of the tower;

as shown in fig. 1 and 3, the side fixed mounting of air-cooled cavity 5 has refrigeration bellows 19, first cavity 20 and second cavity 21 have been seted up to refrigeration bellows 19 inside, air cooler 22 is installed to the longitudinal symmetry in the first cavity 20, second rotary rod 23 is worn to be equipped with by the central point of first cavity 20, second rotary rod 23 one end extends to first cavity 20 outer wall and second pneumatic blade 24 fixed connection, the other end extends to the inside and third pneumatic blade 25 fixed connection of second cavity 21, air inlet 26 has been seted up to one side longitudinal symmetry that first cavity 20 is close to second pneumatic blade 24, exhaust vent 27 has been seted up to the longitudinal symmetry between first cavity 20 and the second cavity 21, one side air-cooled cavity 5 intercommunication that second cavity 21 is close to air-cooled cavity 5, air-cooled cavity 5 has seted up the hole 38 of airing exhaust in one side that is close to fan blade 2.

The utility model discloses in, directly set up water-cooling chamber 4 in the periphery of cabin 3, directly set up air-cooling chamber 5 in the periphery of water-cooling chamber 4, make can direct contact each other between cabin 3 and water-cooling chamber 4 and the 5 three in air-cooling chamber, mobility through water can take away the heat on cabin 3 surface, after cold water absorption heat altered water in the air-cooling chamber 5, the removal of cold wind further takes away the heat on cabin 3 surface and the heat on water-cooling chamber 4 surface in the rethread air-cooling chamber 5, consequently, the combined action through water-cooling chamber 4 and air-cooling chamber 5 can get off the rapid cooling of the temperature in cabin 3, the normal work of generating set has both been guaranteed, its life has been prolonged simultaneously.

The utility model discloses in, along with social development, the power consumption demand is higher and higher, and fan blade's size is bigger and bigger, and the pylon of unit is also built more high more, and it is inconvenient on the one hand to provide the water source through artifical installation water pipe and cool off the cabin, and on the other hand cost is very high, can utilize at ordinary times to rain to collect the rainwater and store in header tank 7.

The utility model discloses in, because the outdoor temperature in summer is very high, lead to the temperature in the header tank 7 also very high, through the first pneumatic blade 12 of the drive of blowing of natural wind rotatory, first pneumatic blade 12 is rotatory simultaneously drives first rotary rod 10 and stirs the rotation of blade 13, stirs into mobile state with water by quiescent condition, helps reducing the temperature, does the preparation for cooling cabin on next step.

The utility model discloses in, through installation storage water tank 14 for collect and save from the header tank 7 stay and flow through the rainwater behind water-cooling chamber 4, do not have rain for a long time, through cooling cabin 3 and moisture natural evaporation after, do not have surplus cold water in the header tank 7, then can control electric putter 18 through controller 37 and start, electric putter 18 promotes actuating lever 17 and montant 16 and presses cold water to launching basin 9 through circulating water pipe 15, cyclic utilization.

The utility model discloses in, through the blowing drive second pneumatic blade 24 rotation of natural wind, second pneumatic blade 24 rotates in blowing air cooler 22 with the gas in the air, through air cooler 22 with gaseous refrigeration, in blowing air-cooled chamber 5 with cold air through third pneumatic blade 25, behind flow through air-cooled chamber 5, bring the heat out through the hole 38 of airing exhaust to this circulation is reciprocal.

The utility model discloses in, air cooler 22's refrigeration principle belongs to prior art, utilizes the compressor constantly to work promptly, then constantly absorbs the heat of low-pressure area to high-pressure area, then the refrigerant of high-pressure area is continuous heat absorption again and becomes the gaseous state, goes to the low-pressure area, will absorb heat like this, then causes the heat in the air to be absorbed to lead to the air to become cold.

Example 2:

in this embodiment, the following structure is added to embodiment 1: as shown in fig. 2, be provided with lug 28 under the water inlet of water-cooling chamber 4, fixed mounting has dust screen 29 in the water catch bowl 8, a plurality of louvres 30 have been seted up at the top of water catch tank 7, lug 28 can make the rainwater flow downwards simultaneously and the equal amount of water yield from the both sides of water-cooling chamber 4, thereby make cabin 3 surface cooling's equalization, avoid appearing cold and hot uneven cabin 3 deformation that leads to, dust screen 29 has the interception effect, can avoid impurity among the external environment to enter into water catch tank 7 and block up the delivery port of water catch bowl 8 or the water inlet of launching basin 9, can slowly distribute away the heat in the water catch tank 7 through louvre 30, with this reduction temperature.

Example 3:

in this embodiment, in addition to the above embodiments 1 and 2, the following structures are added: as shown in fig. 2 and 3, a first rotating bearing 31 is disposed at a joint of the first rotating rod 10 and the water collecting tank 7, the first rotating rod 10 is disposed in the first rotating bearing 31 in a penetrating manner, a second rotating bearing 35 is disposed at a joint of the second rotating rod 23 and the first cavity 20 and the second cavity 21, the second rotating rod 23 is disposed in the second rotating bearing 35 in a penetrating manner, the first rotating rod 10 can be rotated more smoothly by the first rotating bearing 31, so that the first rotating rod 10 rotates faster, finally, heat inside the water collecting tank 7 is dissipated faster, and the water temperature is reduced faster, and the second rotating rod 23 can be rotated more smoothly by the second rotating bearing 35, so that the second rotating rod 23 rotates faster, and then the second pneumatic blade 24 and the third pneumatic blade 25 rotate faster, so that more air enters the air cooling channel 28 from the air inlet 26 and finally flows into the air cooling cavity 5 to take away more heat faster.

Example 4:

in this embodiment, in addition to the above embodiments 1, 2 and 3, the following structures are added: as shown in fig. 2 and 4, the solenoid valve 32 is arranged on the lower water pipe of the lower water tank 9, the check valve 34 is arranged on the lower water pipe of the water inlet tank 33, and the flow direction of the check valve 34 flows into the water storage tank 14 from the lower water tank 9 but cannot flow into the lower water tank 9 from the water storage tank 14; as shown in fig. 1, a temperature sensor 36 is installed on a housing of the nacelle 3, a controller 37 is installed on an outer wall of the tower, the controller 37 is electrically connected with the electromagnetic valve 32 and the temperature sensor 36, the temperature sensor 36 can be used to sense whether the temperature in the nacelle 3 exceeds a preset threshold, the controller 37 judges whether the electromagnetic valve 32 needs to be opened, when the temperature sensor 36 senses that the temperature in the nacelle 3 exceeds the threshold, the controller 37 controls the first electromagnetic valve 32 to be opened, and rainwater in the water collection tank 7 is used to cool the nacelle 3; when the temperature sensor 36 senses that the temperature in the nacelle 3 does not exceed the threshold value and the nacelle 3 does not need to be cooled, the controller 37 controls the first solenoid valve 32 to close.

The utility model discloses in, temperature sensor 36 and controller 37 are prior art, and temperature sensor 36 can adopt the model to be PT100 'S temperature sensor, and the collection scope of temperature is-200- +850 ℃, and controller 37 can adopt the model to be S7-200' S single chip model PLC.

The working principle of the cooling system of the engine room of the wind generating set is as follows:

firstly, whether the temperature in the cabin 3 exceeds a threshold value is sensed through a temperature sensor 36, if the temperature exceeds the threshold value, the cabin 3 needs to be cooled, a controller 37 is used for controlling a first electromagnetic valve 32 to be opened, rainwater stored in the cabin 3 in the previous rain flows to a water cooling cavity 4 from a water outlet of a lower water tank 9, since the water outlet of the lower water tank 9 is arranged in the middle of the top of the water cooling cavity 4, the rainwater flows downwards from two sides of the water cooling cavity 4, the rainwater and the cabin 3 exchange heat in the flowing process, the temperature of the surface of the cabin 3 is reduced, the rainwater takes heat away, the rainwater flows to a water storage tank 14 through a water inlet groove 33 for storage, meanwhile, natural wind blows a second pneumatic blade 24 to rotate, the second pneumatic blade 24 rotates to blow air in the air into an air cooler 22, the air is cooled by the air cooler 22, the air is blown into the air cooling cavity 5 by a third pneumatic blade 25, after flowing through the air cooling cavity 5, the heat on the surface of the cabin 3 and the surface of the water cooling cavity 4 are blown out from an exhaust hole 38 until the cabin 3 is further cooled by a cabin 3, the water cooling push rod 7, the water collecting device 16, the water tank 9 is started, the water collecting device 6 is started up and used for controlling the rainwater to be circulated by an electric rainwater circulation device, the water collecting device 16, the water collecting device 7, the electric rainwater 6, the electric rainwater to be used for controlling and the water collecting device 7, the water collecting device for controlling the water cooling device 7, the water collecting device for controlling the water cooling device for a long time, then can utilize the forced air cooling device alone to cool off cabin 3, guarantee all the time that at least one mode can cool off cabin 3 to guaranteed that the temperature of cabin 3 is in the within range of regulation all the time, guaranteed that the mechanical equipment in cabin 3 can normal use, avoid the equipment damage that high temperature leads to, prolonged its life simultaneously.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A cooling system of a wind generating set cabin comprises a central rotating shaft (1), a plurality of fan blades (2) are fixedly arranged on one side of the central rotating shaft (1), a cabin (3) is fixedly arranged on one side of the central rotating shaft (1) far away from the fan blade (2), a tower is fixedly arranged below the cabin (3), it is characterized in that the outer ring of the engine room (3) is provided with a water cooling cavity (4), the outer ring of the water cooling cavity (4) is provided with an air cooling cavity (5), the top of the engine room (3) is fixedly provided with a water cooling device (6), the water cooling device (6) comprises a water collecting tank (7), a water collecting tank (8), a lower water tank (9) and a first rotating rod (10), the bottom of the water collecting tank (7) is fixedly arranged at the top of the air cooling cavity (5) through a bracket (11), the water outlet of the water collecting tank (8) is communicated with the water inlet of the water collecting tank (7) in a sealing way, the water inlet of the lower water tank (9) is communicated with the water outlet of the water collecting tank (7) in a sealing way, the water outlet of the water discharging groove (9) is communicated with the water inlet of the water cooling cavity (4), one end of the first rotating rod (10) penetrates through the outer wall of the water collecting tank (7) and is fixedly connected with the first pneumatic blade (12), and the other end of the first rotating rod extends to the inner wall of the water tank (5) and is fixedly connected with the stirring blades (13);

a water storage tank (14) is fixedly mounted below the cabin (3) on the outer wall of the tower, a water inlet groove (33) of the water storage tank (14) is communicated with a water outlet of the water cooling cavity (4) in a sealing manner, the water outlet of the water storage tank (14) is connected with one end of a circulating water pipe (15) in a sealing manner, the other end of the circulating water pipe (15) is communicated with a water outlet groove (9) in a sealing manner, a vertical rod (16) is connected to the inside of the water storage tank (14) in a sliding manner, a driving rod (17) is fixedly connected to one side of the vertical rod (16), one end, far away from the vertical rod (16), of the driving rod (17) penetrates through the tower and is fixedly connected with an electric push rod (18), and the electric push rod (18) is mounted on the outer wall of the tower;

the side fixed mounting in forced air cooling chamber (5) has refrigeration bellows (19), first cavity (20) and second cavity (21) have been seted up to refrigeration bellows (19) inside, symmetry installs air cooler (22) about in first cavity (20), second rotary rod (23) are worn to be equipped with by the central point of first cavity (20), second rotary rod (23) one end extends to first cavity (20) outer wall and second pneumatic blade (24) fixed connection, the other end extend to inside and third pneumatic blade (25) fixed connection of second cavity (21), first cavity (20) are close to one side longitudinal symmetry of second pneumatic blade (24) has seted up inlet opening (26), longitudinal symmetry has seted up exhaust vent (27) between first cavity (20) and second cavity (21), second cavity (21) are close to one side in forced air cooling chamber (5) with forced air cooling chamber (5) intercommunication, hole (38) of airing exhaust are seted up to one side that forced air cooling chamber (5) is close to fan blade (2).

2. Wind turbine nacelle cooling system according to claim 1, characterised in that a projection (28) is arranged directly below the water inlet of the water cooling chamber (4).

3. Wind turbine nacelle cooling system according to claim 1, characterised in that a dust screen (29) is fixedly mounted in the water collection sump (8).

4. The wind generating set nacelle cooling system according to claim 1, wherein a plurality of heat dissipation holes (30) are formed in the top of the water collection tank (7).

5. Wind turbine nacelle cooling system according to claim 1, wherein a first rotary bearing (31) is arranged at the connection of the first rotary rod (10) and the header tank (7), and the first rotary rod (10) is arranged through the first rotary bearing (31).

6. Wind turbine nacelle cooling system according to claim 1, characterised in that the downcomer of the downcomer tank (9) is provided with a solenoid valve (32).

7. Wind turbine nacelle cooling system according to claim 1, characterised in that the downcomer of the inlet channel (33) is provided with a non-return valve (34).

8. Wind turbine nacelle cooling system according to claim 1, characterised in that a second rotary bearing (35) is arranged at the connection of the second rotary rod (23) and the first and second cavities (20, 21), the second rotary rod (23) being arranged through the second rotary bearing (35).

9. Wind turbine nacelle cooling system according to claim 1, characterised in that a temperature sensor (36) is mounted on the housing of the nacelle (3).

10. Wind park nacelle cooling system according to claim 1, wherein a controller (37) is mounted on an outer wall of the tower.

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