CN114593025A

CN114593025A - Cooling system of shafting of wind generating set and wind generating set

Info

Publication number: CN114593025A
Application number: CN202210265562.3A
Authority: CN
Inventors: 王文杰; 韦婷婷; 盛毅
Original assignee: Anhui Zhong'an Green Energy Co ltd
Current assignee: Anhui Zhong'an Green Energy Co ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2022-06-07
Anticipated expiration: 2042-03-17
Also published as: CN114593025B

Abstract

The invention provides a cooling system of a shaft system of a wind generating set and the wind generating set, comprising a generator subsystem, wherein an air box is fixedly arranged on a tower frame, a water box is fixedly arranged on the side surface of the air box, and a first cam and a second cam can intermittently push a first piston plate and a second piston plate; the annular water bag is sleeved on the central rotating shaft, a water storage ring on one side far away from the water inlet pipe is communicated with and provided with a water return pipe, the bottom of the hollow pipe is provided with an inclined part, the inclined part is communicated with and provided with a water spraying ball, the air outlet pipe is communicated with and provided with a branched air pipe, the branched air pipe is communicated with an aeration pipe, and the aeration pipe is arranged between the water inlet pipe and the air outlet pipe. The invention provides a cooling system of a shafting of a wind generating set and the wind generating set, which can effectively combine air cooling and water cooling to promote each other, so that the temperatures of cooling water and cooling air are lower, heat is effectively dissipated, and a central rotating shaft can be quickly cooled.

Description

Cooling system of shafting of wind generating set and wind generating set

Technical Field

The invention relates to the technical field of wind driven generators, in particular to a cooling system of a shafting of a wind driven generator set and the wind driven generator set.

Background

Wind generating set adopts permanent magnetism to directly drive aerogenerator mostly, for the work of guaranteeing the base bearing, needs lubricate the base bearing, and the lubrication mode of present base bearing mainly has two kinds: grease lubrication and lubricating oil lubrication. For rolling bearings, grease lubrication is generally adopted because a grease lubrication device is simpler and grease is less likely to leak, facilitating maintenance and repair of bearings, and the like, as compared with grease lubrication. However, the wind turbine generator system may be installed in coastal, gobi and grassland areas, where the climate conditions are very different from one another, if the heat generated in the main bearing cannot be effectively dissipated, and the interior of the main bearing may continue to operate at a high temperature in addition to the severe environment (e.g., high temperature environment) in which the wind turbine generator system is located, the life of the grease may be rapidly reduced as the temperature increases, thereby causing the lubrication effect of the grease to be ineffective.

In the prior art, a fan main shaft of a wind driven generator with a cooling device, which is disclosed as CN208294709U, comprises a fan main shaft and a protective sleeve, wherein the fan main shaft is positioned in an inner cavity of the protective sleeve, bearings are installed at the joints of the left side and the right side of the fan main shaft and the protective sleeve, a cold water tank is installed on the left side of the top of the protective sleeve, a first water outlet pipe is installed at the bottom of the cold water tank, a spray tray is evenly installed at the bottom of the flow dividing pipe, a flow dividing grating is installed below the spray tray, a water outlet pipe matched with a water outlet is inserted and installed on the water outlet, a water pumping pipe is installed at the other end of the water outlet pipe and extends to the upper part of the top of the protective sleeve, a water pump is installed on the left side of the water pumping pipe, a cooling tank is installed on the left side of the first water conveying pipe, the left side of the cooling tank is connected with the cold water tank through a second water conveying pipe to the flow dividing pipe, and cools the fan main shaft from the spray tray, the service life of the main shaft of the fan is prolonged.

However, the method still has the obvious defects in the using process: 1. the device mainly cools and radiates the heat dissipation efficiency of the fan main shaft by spraying cooling water, but the cooling mode can lead the water quantity of the cooling water to be continuously reduced, the cooling water needs to be frequently added, and when the wind power is large, the sprayed water can be blown by wind and splashed to other parts, so that water enters, is corroded by water and the like; 2. the device only adopts water cooling to cool, and the mode is single, so that the cooling efficiency is low, and especially after the cooling water is used up, if the cooling water is not added in time, the whole failure of the cooling device can be caused.

Disclosure of Invention

The invention aims to provide a cooling system of a shafting of a wind generating set and the wind generating set, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a cooling system of a shafting of a wind generating set comprises a generator subsystem, wherein a main bearing is arranged in the generator subsystem, a central rotating shaft is arranged in the main bearing, a plurality of fan blades are fixedly arranged on the central rotating shaft, a cabin is arranged on one side of the generator subsystem, which is far away from the fan blade, a tower is fixedly arranged below the cabin, an air box is fixedly arranged on the tower frame, a water tank is fixedly arranged on the side surface of the air box, a support frame is fixedly arranged on the side surface of the water tank, a rotating rod is hinged and penetrated in the supporting frame, a driving blade, a first cam and a second cam are fixedly arranged on the rotating rod, a plurality of transmission blades are arranged at equal intervals, a first piston plate and a second piston plate are respectively and movably arranged in the air box and the water box, the first cam and the second cam can intermittently push the first piston plate and the second piston plate when the rotating rod is continuously rotated;

the water tank is communicated with a water inlet pipe, a first one-way valve is arranged in the water inlet pipe, the water inlet pipe is communicated with a water storage ring, the water storage ring is arranged in a generator subsystem, the water storage ring is communicated with an annular water bag through a communicating pipe, the annular water bag is sleeved on a central rotating shaft, the water storage ring at one side far away from the water inlet pipe is communicated with a water return pipe, the water return pipe is communicated with the water storage water bag, and a second one-way valve is arranged in the water return pipe;

an air inlet pipe and an air outlet pipe are communicated with the air box, a third one-way valve is arranged in the air inlet pipe, a fourth one-way valve is arranged in the air outlet pipe, and the air outlet pipe is partially arranged in the inner cavity of the water tank and communicated with an installation groove arranged in the generator subsystem, a clapboard is fixedly arranged in the mounting groove, a plurality of hollow pipes are hinged and penetrated in the clapboard, the hollow pipe is fixedly provided with a rotating blade, the bottom of the hollow pipe is provided with an inclined part, the inclined part is communicated with a spray balloon which is provided with a plurality of air jet holes, the air outlet pipe is communicated with a branch air pipe, the branch air pipe is communicated with an aeration pipe which is arranged between the water inlet pipe and the air outlet pipe, the aeration pipe is arranged in a rainwater storage cavity formed in the engine room, and the rainwater storage cavity stores stored rainwater.

Preferably, the support frame is T-shaped, a first mounting bearing is embedded in a longitudinal section of the support frame, and the rotating rod penetrates through the first mounting bearing.

Preferably, the below of first piston board and second piston board is all fixed and is provided with the push rod, the below of push rod is all fixed and is provided with the push pedal, the equal symmetric connection in below both ends of first piston board and second piston board is provided with the spring, spring coupling is on the stopper, the stopper corresponds fixed setting on the inner wall of gas tank and water tank.

Preferably, the annular water bags are arranged in two numbers and are respectively arranged on two sides of the main bearing.

Preferably, a plurality of second mounting bearings are embedded in the partition plate, and the hollow pipes are hinged and penetrate through the second mounting bearings.

Preferably, one side of the water inlet pipe close to the aeration pipe is provided with a plurality of water inlet pipe sunken parts, and one side of the air outlet pipe close to the aeration pipe is provided with a plurality of air outlet pipe sunken parts.

Preferably, the rainwater storage cavity is communicated with the water collecting cover through a communication water tank, and the water collecting cover is fixedly arranged on the engine room.

Preferably, a dust screen is fixedly arranged in the water collecting cover, and a first baffle and a second baffle are arranged above the water collecting cover in a staggered mode.

A wind generating set comprises the cooling system of the shafting of the wind generating set.

Compared with the prior art, the invention has the beneficial effects that:

1. the cooling water circulating device is provided with the annular water bag, and the cooling water capable of circulating is arranged in the annular water bag, so that the central rotating shaft can be cooled in a contact manner, and the central rotating shaft can be rapidly cooled;

2. the invention is provided with a gas spraying ball which is provided with a plurality of gas spraying holes, and the gas spraying ball can rotate under the action of wind power blowing, so that the gas spraying holes can assist in cooling the central rotating shafts at different positions, the central rotating shafts can be rapidly cooled, in addition, a gas outlet pipe penetrates through a water tank, liquid in the water tank can cool gas in the gas outlet pipe, the temperature of the blown gas is lower, and the gas outlet pipe is communicated with a branch gas pipe, so that the aeration pipe can aerate and enrich oxygen, and further, a water inlet pipe and a gas outlet pipe at two sides of the aeration pipe can be cooled by the liquid in a rainwater storage cavity again, effective heat exchange is carried out, and rapid cooling of the central rotating shafts is promoted in many ways.

The invention provides a cooling system of a shafting of a wind generating set and the wind generating set, which can effectively combine air cooling and water cooling to promote each other, so that the temperatures of cooling water and cooling air are lower, heat is effectively dissipated, a central rotating shaft can be quickly cooled, and the wind generating set is more durable.

Drawings

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

FIG. 2 is a schematic front sectional view of the central rotating shaft, the interior of the nacelle and its associated structures of the present invention;

fig. 3 is an enlarged view of the invention at a in fig. 2.

In the figure: 1 generator subsystem, 101 main bearing, 102 mounting groove, 2 central rotating shaft, 3 fan blade, 4 engine room, 5 tower, 6 air box, 7 water tank, 8 supporting frame, 9 first mounting bearing, 10 rotating rod, 11 transmission blade, 12 first cam, 13 second cam, 141 first piston plate, 142 second piston plate, 15 push rod, 16 push plate, 17 spring, 18 limiting block, 19 water inlet pipe, 191 water inlet pipe depression part, 20 first one-way valve, 21 water storage ring, 22 communicating pipe, 23 annular water bag, 24 water return pipe, 25 water storage water bag, 26 second one-way valve, 27 air inlet pipe, 28 third one-way valve, 29 air outlet pipe, 291 depression part, 30 fourth one-way valve, 31 partition plate, 32 hollow pipe, 321 inclined part, 33 second mounting bearing, 34 rotating blade, 35 air spray ball, 351 air spray hole, 36 branch air pipe, 37 aeration pipe, 38 rainwater water storage cavity, 39 communicating water tank, 39 water tank, 7 water tank, 8 water tank, 9 first mounting bearing, 10 rotating rod, 11 rotating shaft, 11 first piston plate, 11 second piston plate, 23 water storage ring, 3 water tank, 3 water storage ring, 3 water tank, 3 water storage tank, 3 water storage ring, 3 water storage tank, 3 water tank, 3 water storage tank, 3 water storage tank, 9 water tank, 3 water storage tank, 9 water storage tank, 3, 9 water storage tank, 3, 9, 3 water storage tank, 9, 3, 9, and 17 water storage tank, 3, 9, 18, 9, 3, 9, 3, 40 water collecting cover, 41 dust screen, 42 first baffle, 43 second baffle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1 to fig. 3, the present invention provides several technical solutions:

the first embodiment is as follows:

a cooling system of a shafting of a wind generating set comprises a generator subsystem 1, a main bearing 101 is arranged in the generator subsystem 1, a central rotating shaft 2 is arranged in the main bearing 101, so that the central rotating shaft 2 can rotate, a plurality of fan blades 3 are fixedly arranged on the central rotating shaft 2, a cabin 4 is arranged on one side of the generator subsystem 1 away from the fan blades 3, a tower 5 is fixedly arranged below the cabin 4, an air tank 6 is fixedly arranged on the tower 5, the air tank 6 is used for transferring and pumping out air, a water tank 7 is fixedly arranged on the side surface of the air tank 6, cooling water is stored in the water tank 7, a support frame 8 is fixedly arranged on the side surface of the water tank 7, a rotating rod 10 is hinged and penetrated in the support frame 8 and can rotate in situ, a driving blade 11, a first cam 12 and a second cam 13 are fixedly arranged on the rotating rod 10, when the wind force in the environment is large, the wind blows the driving blade 11, so that the rotating rod 10 and the first cam 12 and the second cam 13 fixed on the rotating rod 10 rotate simultaneously, the driving blades 11 are arranged at equal intervals, the stress is more uniform, the rotating speed of the rotating rod 10 is more stable, the air tank 6 and the water tank 7 are respectively and movably provided with a first piston plate 141 and a second piston plate 142, the sectional shape and the size of the first piston plate 141 are completely consistent with the shape and the size of the inner cavity of the air tank 6, the sectional shape and the size of the second piston plate 142 are completely consistent with the shape and the size of the inner cavity of the water tank 7, so that the first piston plate 141 and the second piston plate 142 can respectively move up and down along the inner cavities of the water tank 7 and the air tank 6, when the rotating rod 10 continuously rotates, the first cam 12 and the second cam 13 can intermittently push the first piston plate 141 and the second piston plate 142, thereby, the gas in the gas tank 6 and the cooling liquid in the water tank 7 can be pumped out by the reciprocating motion, thereby realizing the cooling.

The water tank 7 is communicated with a water inlet pipe 19, the water inlet pipe 19 is internally provided with a first one-way valve 20, the arrangement of the first one-way valve 20 ensures that cooling water can only enter the water inlet pipe 19 from the water tank 7 and can not flow back, the water inlet pipe 19 is communicated with a water storage ring 21, the water storage ring 21 is arranged in the generator subsystem 1, the water storage ring 21 is communicated with an annular water bag 23 through a communication pipe 22, the annular water bag 23 is sleeved on the central rotating shaft 2, because the annular water bag 23 has certain telescopic elasticity, the annular water bag 23 can be closely attached to the surface of the central rotating shaft 2, more effective direct heat conduction is realized, the temperature reduction is faster, and hard damage can be avoided, a water return pipe 24 is communicated with the water storage ring 21 on one side far away from the water inlet pipe 19, the water return pipe 24 is communicated with the water storage water bag 25, the water storage bag 25 also has certain elasticity, and can expand when the water filling quantity is increased, or when the water amount is reduced, the water return pipe 24 is provided with a second one-way valve 26, and the second one-way valve 26 is arranged to enable the cooling water in the water storage ring 21 to enter the water storage water bag 25 only through the water return pipe 24 instead of flowing back, so that the cooling water in the annular water bag 23 is in a reciprocating flowing state, and further more effective heat dissipation is realized.

An air inlet pipe 27 and an air outlet pipe 29 are communicated with each other on the air box 6, a third one-way valve 28 is arranged in the air inlet pipe 27, the third one-way valve 28 is arranged to enable air in the external environment to enter the air box 6 only through the air inlet pipe 27 but not to flow back, a fourth one-way valve 30 is arranged in the air outlet pipe 29, the fourth one-way valve 30 is arranged to enable air to enter the air outlet pipe 29 only from the air box 6 but not to flow back, the air outlet pipe 29 is partially arranged in an inner cavity of the water tank 7 and can exchange heat and cool in time, the air outlet pipe 29 is communicated with a mounting groove 102 formed in the generator subsystem 1, a partition plate 31 is fixedly arranged in the mounting groove 102, a plurality of hollow pipes 32 are hinged and arranged in the partition plate 31 in a penetrating manner, rotating blades 34 are fixedly arranged on the hollow pipes 32, when air flow in the air outlet pipe 29 blows the mounting groove 102, the rotating blades 34 are blown, and the hollow pipes 32 are driven to rotate, the bottom of the hollow pipe 32 is provided with an inclined part 321, the inclined part 321 is communicated with the air injection ball 35, the air injection ball 35 is provided with a plurality of air injection holes 351, cooling air flow is finally sprayed out from the air injection holes 351, the hollow pipe 32 and the inclined part 321 thereof can rotate, so that the position of the air injection ball 35 is changed, the air injection holes 351 can blow the central rotating shaft 2 at different positions, thereby realizing more effective cooling, in addition, part of the air flow can blow to the annular water bag 23, after heat conduction, the temperature of the air flow can be further reduced, thereby realizing more effective cooling treatment on the central rotating shaft 2, the air outlet pipe 29 is communicated with a branch air pipe 36, the branch air pipe 36 is communicated with the aeration pipe 37, therefore, part of the air flow in the air outlet pipe 29 can blow out from the aeration pipe 37 after passing through the branch air pipe 36, the aeration pipe 37 is arranged between the water inlet pipe 19 and the air outlet pipe 29, the aeration pipe 37 is arranged in a rainwater storage cavity 38 arranged in the cabin 4, and the rainwater storage cavity 38 stores accumulated rainwater, so that the rainwater in the rainwater storage cavity 38 is stirred, heat exchange among the water inlet pipe 19, the air outlet pipe 29 and the rainwater is promoted, and the purpose of quickly cooling is achieved.

Example two:

a cooling system of a shafting of a wind generating set comprises a generator subsystem 1, a main bearing 101 is arranged in the generator subsystem 1, a central rotating shaft 2 is arranged in the main bearing 101, a plurality of fan blades 3 are fixedly arranged on the central rotating shaft 2, a cabin 4 is arranged on one side of the generator subsystem 1 far away from the fan blades 3, a tower frame 5 is fixedly arranged below the cabin 4, an air tank 6 is fixedly arranged on the tower frame 5, the air tank 6 is used for transferring and pumping out air, a water tank 7 is fixedly arranged on the side surface of the air tank 6, cooling water is stored in the water tank 7, a support frame 8 is fixedly arranged on the side surface of the water tank 7, the support frame 8 is T-shaped, a first mounting bearing 9 is embedded in the longitudinal section of the support frame, a rotating rod 10 is arranged in the first mounting bearing 9 in a penetrating manner, the first mounting bearing 9 plays a role of providing stable rotating support for the rotating rod 10, the support frame 8 is provided with a rotating rod 10 in a hinged and penetrating manner, the rotating rod 10 can rotate in situ, the rotating rod 10 is fixedly provided with a driving blade 11, a first cam 12 and a second cam 13, when the wind power in the environment is large, the driving blade 11 is blown by wind, so that the rotating rod 10 and the first cam 12 and the second cam 13 fixed on the rotating rod 10 rotate simultaneously, the driving blades 11 are arranged at equal intervals, a first piston plate 141 and a second piston plate 142 are movably arranged in the air tank 6 and the water tank 7 respectively, when the rotating rod 10 rotates continuously, the first cam 12 and the second cam 13 can intermittently push the first piston plate 141 and the second piston plate 142, and therefore, the gas in the air tank 6 and the cooling liquid in the water tank 7 can be pumped outwards through reciprocating motion, and cooling is achieved.

The water tank 7 is communicated with a water inlet pipe 19, the water inlet pipe 19 is internally provided with a first one-way valve 20, the arrangement of the first one-way valve 20 ensures that cooling water can only enter the water inlet pipe 19 from the water tank 7 and can not flow back, the water inlet pipe 19 is communicated with a water storage ring 21, the water storage ring 21 is arranged in the generator subsystem 1, the water storage ring 21 is communicated with an annular water bag 23 through a communication pipe 22, the annular water bag 23 is sleeved on the central rotating shaft 2, the annular water bags 23 are totally provided with two water storage rings and are respectively arranged at two sides of the main bearing 101, therefore, more uniform cooling treatment can be realized for two sides of the main bearing 101, because the annular water bag 23 has certain telescopic elasticity, the annular water bag can be closely attached to the surface of the central rotating shaft 2, more effective direct heat conduction can be realized, hard damage can be avoided, a water return pipe 24 is communicated with the water storage ring 21 at one side far away from the water inlet pipe 19, the water return pipe 24 is communicated with the water storage water bag 25, the second one-way valve 26 is arranged in the water return pipe 24, and the cooling water in the water storage ring 21 can only enter the water storage water bag 25 through the water return pipe 24 and cannot flow reversely due to the arrangement of the second one-way valve 26, so that the cooling water in the annular water bag 23 is in a reciprocating flowing state, and further more effective heat dissipation is realized.

An air inlet pipe 27 and an air outlet pipe 29 are communicated with each other on the air box 6, a third one-way valve 28 is arranged in the air inlet pipe 27, the third one-way valve 28 is arranged to enable air in the external environment to enter the air box 6 only through the air inlet pipe 27 but not to flow back, a fourth one-way valve 30 is arranged in the air outlet pipe 29, the fourth one-way valve 30 is arranged to enable air to enter the air outlet pipe 29 only from the air box 6 but not to flow back, the air outlet pipe 29 is partially arranged in an inner cavity of the water tank 7 and can exchange heat and cool in time, the air outlet pipe 29 is communicated with a mounting groove 102 arranged in the generator subsystem 1, a partition plate 31 is fixedly arranged in the mounting groove 102, a plurality of hollow pipes 32 are hinged and arranged in the partition plate 31 in a penetrating way, a plurality of second mounting bearings 33 are embedded in the partition plate 31, the hollow pipes 32 are hinged and arranged in the second mounting bearings 33, and the hollow pipes 32 can rotate smoothly due to the arrangement of the second mounting bearings 33, the hollow pipe 32 is fixedly provided with a rotating blade 34, when the air flow in the air outlet pipe 29 blows to the mounting groove 102, the rotating blade 34 is blown, thereby the hollow pipe 32 is driven to rotate, the bottom of the hollow pipe 32 is provided with an inclined part 321, the inclined part 321 is communicated with an air spraying ball 35, the air spraying ball 35 is provided with a plurality of air spraying holes 351, the cooling air flow is finally sprayed out from the air spraying holes 351, the air outlet pipe 29 is communicated with a branched air pipe 36, the branched air pipe 36 is communicated with the aeration pipe 37, therefore, part of the air flow in the air outlet pipe 29 can be blown out from the aeration pipe 37 after passing through the branched air pipe 36, the aeration pipe 37 is arranged between the water inlet pipe 19 and the air outlet pipe 29, one side of the water inlet pipe 19 close to the aeration pipe 37 is provided with a plurality of water inlet pipe concave parts 191, one side of the air outlet pipe 29 close to the aeration pipe 37 is provided with a plurality of air outlet pipe concave parts 291, the concave arrangement can increase the surface area of the pipe, and further promote the heat exchange between the high-temperature medium and the low-temperature rainwater in the rainwater storage cavity 38, so as to improve the heat exchange effect, the aeration pipe 37 is arranged in the rainwater storage cavity 38 formed in the cabin 4, and the rainwater stored in the rainwater storage cavity 38 is stored, so that the rainwater in the rainwater storage cavity 38 is stirred, the heat exchange between the water inlet pipe 19 and the rainwater outlet pipe 29 is promoted, and the purpose of rapid cooling is achieved.

Example three:

in this embodiment, on the basis of the first and second embodiments, the following structures are added: the push rods 15 are fixedly arranged below the first piston plate 141 and the second piston plate 142, the push plate 16 is fixedly arranged below the push rods 15, therefore, when the push plate 16 is stressed, the push rod 15 can push the corresponding first piston plate 141 or the second piston plate 142, the springs 17 are symmetrically connected to the two ends of the lower portion of the first piston plate 141 and the second piston plate 142, the springs 17 have good telescopic elasticity, the springs 17 are connected to the limiting blocks 18, the limiting blocks 18 are correspondingly and fixedly arranged on the inner walls of the air tank 6 and the water tank 7, and are used for limiting the moving range of the first piston plate 141 and the second piston plate 142 and avoiding the separation from the corresponding water tank 7 or the air tank 6.

Example four:

in this embodiment, on the basis of the first and second embodiments, the following structures are added: the rainwater storage cavity 38 is communicated with the water collection cover 40 through the communication water channel 39, the water collection cover 40 is fixedly arranged on the cabin 4 and used for collecting rainwater and effectively utilizing natural resources, the dust screen 41 is fixedly arranged in the water collection cover 40, the dust screen 41 has an intercepting function and can prevent impurities in the external environment from entering the rainwater storage cavity 38, the first baffle 42 and the second baffle 43 are arranged above the water collection cover 40 in a staggered mode, in the embodiment, the height of the first baffle 42 is lower than that of the second baffle 43, the first baffle 42 and the second baffle 43 are arranged oppositely, so that the impurities can be further intercepted, direct sunlight can be prevented, and further evaporation of the accumulated rainwater is slowed down.

The working principle is as follows:

in the using process, if rainfall occurs, rainwater can fall into the water collecting cover 40 after passing through the second baffle 43, the first baffle 42 and the dust screen 41 and then enter the rainwater storage cavity 38 along the communicating water groove 39, and the rainwater can exchange heat with the water inlet pipe 19 and the air outlet pipe 29 which pass through the rainwater, so that the cooling of cooling water and cooling airflow per se is realized.

When the wind force in the external environment is larger, the higher the rotating speed of the wind driving the fan blades 3 is, the faster the central rotating shaft 2 rotates, the higher the temperature of the central rotating shaft 2 and the main bearing 101 is, and therefore, cooling is more needed: at this time, the faster the wind drives the driving blade 11 to rotate, the higher the rotation speed of the rotating rod 10 is, and further the first cam 12 and the second cam 13 are driven to rotate continuously, when the first cam 12 pushes the first piston plate 141 upwards intermittently in the rotating process, the first piston plate 141 pushes the cooling water in the water tank 7 towards the water inlet pipe 19, the cooling water in the water inlet pipe 19 enters the annular water bag 23 through the water storage ring 21 and the communication pipe 22, so as to cool the central rotating shaft 2, after heat exchange, the cooling water enters the water storage bag 25 through the water return pipe 24, so that the water storage bag 25 expands, but when the first cam 12 is far away from the first piston plate 141, the spring 17 drives the first piston plate 141 to move outwards, so that the liquid in the water storage bag 25 is reduced and contracted, and therefore the cooling water in the annular water bag 23 is in a continuous flowing state, the heat exchange effect can be improved;

when the second cam 13 rotates, the second piston plate 142 is intermittently pushed upwards to push the gas in the gas tank 6 towards the gas outlet pipe 29, on one hand, the gas in the gas outlet pipe 29 is blown towards the mounting groove 102 to blow the rotating blade 34 and further drive the hollow pipe 32 to rotate, the hollow pipe 32 drives the inclined portion 321 at the bottom to rotate therewith, so that the position of the gas spraying ball 35 is also changed continuously, the gas spraying ball 35 is provided with a plurality of gas spraying holes 351, the gas spraying holes 351 finally blow out a heat dissipation gas flow to assist in cooling the central rotating shaft 2, in addition, part of the gas flow is blown towards the annular water bag 23, after heat conduction, the temperature of the gas flow is further reduced, and therefore, more effective cooling processing on the central rotating shaft 2 is realized, it needs to be noted that in the process, the gas outlet pipe 29 is partially arranged in the water tank 7, so that the cooling water in the water tank 7 can cool the gas in the gas outlet pipe 29 in real time, the temperature of the blown gas is lower, and the heat dissipation effect is better; on the other hand, part of the gas in the outlet pipe 29 can enter the branch gas pipe 36, and finally blow out from the aeration pipe 37, and then to stirring the rainwater in the rainwater retaining cavity 38, promote the heat transfer cooling of inlet pipe 19 and outlet pipe 29, one side that the inlet pipe 19 is close to the aeration pipe 37 is provided with a plurality of inlet pipe depressed parts 191, one side that the outlet pipe 29 is close to the aeration pipe 37 is provided with a plurality of outlet pipe depressed parts 291, the surface area that the pipeline can be increased in the sunken setting, and then promote the heat exchange of the high temperature medium therein and the low temperature rainwater in the rainwater retaining cavity 38, the heat transfer effect is improved, and the purpose of rapid cooling is played.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various 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

1. The utility model provides a cooling system of wind generating set's shafting, includes generator subsystem (1), be provided with main bearing (101) in generator subsystem (1), be provided with central pivot (2) in main bearing (101), fixed a plurality of fan blade (3) of being provided with on central pivot (2), one side that fan blade (3) were kept away from in generator subsystem (1) is provided with cabin (4), the fixed pylon (5) that is provided with in below of cabin (4), its characterized in that: the tower frame (5) is fixedly provided with an air box (6), the side face of the air box (6) is fixedly provided with a water tank (7), the side face of the water tank (7) is fixedly provided with a support frame (8), a rotary rod (10) is hinged and penetrated in the support frame (8), the rotary rod (10) is fixedly provided with a plurality of transmission blades (11), a first cam (12) and a second cam (13), the transmission blades (11) are arranged at equal intervals, the air box (6) and the water tank (7) are respectively and movably provided with a first piston plate (141) and a second piston plate (142), and when the rotary rod (10) continuously rotates, the first cam (12) and the second cam (13) can intermittently push the first piston plate (141) and the second piston plate (142);

the water tank (7) is provided with a water inlet pipe (19) in a communicated manner, a first one-way valve (20) is arranged in the water inlet pipe (19), the water inlet pipe (19) is communicated with a water storage ring (21), the water storage ring (21) is arranged in the generator subsystem (1), the water storage ring (21) is communicated with an annular water bag (23) through a communication pipe (22), the annular water bag (23) is sleeved on the central rotating shaft (2), a water return pipe (24) is communicated with the water storage ring (21) on one side far away from the water inlet pipe (19), the water return pipe (24) is communicated with a water storage bag (25), and a second one-way valve (26) is arranged in the water return pipe (24);

an air inlet pipe (27) and an air outlet pipe (29) are communicated with and arranged on the air box (6), a third one-way valve (28) is arranged in the air inlet pipe (27), a fourth one-way valve (30) is arranged in the air outlet pipe (29), part of the air outlet pipe (29) is arranged in an inner cavity of the water tank (7), the air outlet pipe (29) is communicated with an installation groove (102) formed in the generator subsystem (1), a partition plate (31) is fixedly arranged in the installation groove (102), a plurality of hollow pipes (32) are hinged and arranged in the partition plate (31), rotating blades (34) are fixedly arranged on the hollow pipes (32), an inclined part (321) is arranged at the bottom of each hollow pipe (32), an air spraying ball (35) is communicated and arranged on each inclined part (321), a plurality of air spraying holes (351) are formed in each air spraying ball (35), and a branch air pipe (36) is communicated and arranged on the air outlet pipe (29), the branch air pipe (36) is communicated with an aeration pipe (37), the aeration pipe (37) is arranged between the water inlet pipe (19) and the air outlet pipe (29), the aeration pipe (37) is arranged in a rainwater storage cavity (38) formed in the cabin (4), and the rainwater storage cavity (38) stores accumulated rainwater.

2. The cooling system of a shafting of a wind turbine generator system according to claim 1, wherein: the support frame (8) is T type, and embedded being provided with first installation bearing (9) in its longitudinal section, rotary rod (10) run through the setting in first installation bearing (9).

3. The cooling system of a shafting of a wind turbine generator system according to claim 1, wherein: the lower part of first piston board (141) and second piston board (142) all is fixed and is provided with push rod (15), the below of push rod (15) is all fixed and is provided with push pedal (16), the equal symmetric connection in below both ends of first piston board (141) and second piston board (142) is provided with spring (17), spring (17) are connected on stopper (18), stopper (18) correspond fixed the setting on the inner wall of gas tank (6) and water tank (7).

4. The cooling system of a shafting of a wind turbine generator system according to claim 1, wherein: the annular water bags (23) are arranged in two numbers and are respectively arranged on two sides of the main bearing (101).

5. The cooling system of a shafting of a wind turbine generator system according to claim 1, wherein: a plurality of second mounting bearings (33) are embedded in the partition plate (31), and the hollow pipes (32) are hinged and penetrate through the second mounting bearings (33).

6. The cooling system of a shafting of a wind turbine generator system according to claim 1, wherein: one side of the water inlet pipe (19) close to the aeration pipe (37) is provided with a plurality of water inlet pipe concave parts (191), and one side of the air outlet pipe (29) close to the aeration pipe (37) is provided with a plurality of air outlet pipe concave parts (291).

7. The cooling system of a shafting of a wind turbine generator system according to claim 1, wherein: the rainwater storage cavity (38) is communicated with the water collecting cover (40) through a communicating water tank (39), and the water collecting cover (40) is fixedly arranged on the engine room (4).

8. The cooling system of a shafting of a wind turbine generator system according to claim 1, wherein: the dust screen (41) is fixedly arranged in the water collecting cover (40), and a first baffle (42) and a second baffle (43) are arranged above the water collecting cover (40) in a staggered mode.

9. A wind generating set is characterized in that: cooling system for a shafting of a wind park comprising a wind park according to any of the preceding claims 1-8.