CN113708567A - Cooler for wind driven generator - Google Patents
Cooler for wind driven generator Download PDFInfo
- Publication number
- CN113708567A CN113708567A CN202111033715.3A CN202111033715A CN113708567A CN 113708567 A CN113708567 A CN 113708567A CN 202111033715 A CN202111033715 A CN 202111033715A CN 113708567 A CN113708567 A CN 113708567A
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- Prior art keywords
- water
- bin
- heat exchange
- air
- cooler
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 238000001816 cooling Methods 0.000 claims abstract description 71
- 238000005192 partition Methods 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 18
- 239000008235 industrial water Substances 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 230000000712 assembly Effects 0.000 description 7
- 238000000429 assembly Methods 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 5
- 230000002596 correlated effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/26—Structural association of machines with devices for cleaning or drying cooling medium, e.g. with filters
Abstract
The cooler for the wind driven generator comprises a square heat exchange bin; the heat exchange bin comprises an air inlet bin, an air outlet bin and a water cooling bin, and the air inlet bin, the water cooling bin and the air outlet bin are sequentially arranged along the width direction; the air inlet bin and the air outlet bin are respectively provided with an air inlet and an air outlet, the air outlet bin is provided with a fan assembly, and the inside of the water cooling bin is provided with a heat exchange core group; the side face of the heat exchange core group is connected with a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe extend to the outside of the water cooling bin, and the water inlet pipe and the water outlet pipe are respectively connected with a water pipe to introduce cold water into the heat exchange core group and discharge hot water. According to the cooler, under the action of the fan assembly, hot air in the generator is sucked in from the air inlet, is discharged from the air outlet after passing through the heat exchange core group, and then enters the interior of the generator again to exchange heat with the heating component, so that the circulating cooling of primary heat exchange medium air is realized, and the heat exchange core group is supplied with circulating water by an external water pump, namely industrial water is used as a secondary heat exchange medium, so that the cooling effect is enhanced under the condition of ensuring the compact integral structure of the cooler.
Description
Technical Field
The invention relates to the field of generator cooling equipment, in particular to a cooler for a wind driven generator.
Background
The cooler is used as a main heat dissipation part of the generator, the heat exchange efficiency and the energy consumption of the cooler directly influence the stability and the efficiency of the generator, and particularly, the cooler has a vital function on the stable operation of the generator. When the temperature of the winding of the generator is too high, the generator can send out an alarm signal, so that the shutdown is caused, and the economic loss is caused. Most of the existing coolers adopt an air cooling mode, and the coolers and the rotors are required to be installed in a closed housing, so that the coolers occupy partial volume, and the heat exchange efficiency is low under the condition of being isolated from the outside.
The air-water cooler is high in heat exchange efficiency and good in heat exchange effect, and the large-capacity generator preferentially adopts the air-water cooler as a main heat exchange component of the wind driven generator. The air-water cooler mainly comprises a heat exchange core, a housing, a filter screen, a fan, a temperature controller, a differential pressure sensor and the like. Along with the continuous promotion of generator generating capacity, calorific capacity is also higher and higher, and the volume of cooler is also bigger and larger, but the space size that the generator was reserved for the cooler is limited, consequently, how to design a high heat transfer volume, adaptive cooler that heat transfer coefficient is good in limited space volume is the urgent affairs.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a cooler for a wind driven generator, hot air in the cooler for the wind driven generator is sucked from an air inlet under the action of a fan assembly, is discharged from an air outlet after passing through a heat exchange core group, and enters the interior of the generator again to exchange heat with a heating component, so that the circulating cooling of primary heat exchange medium air is realized, the heat exchange core group is used for providing circulating water by an external water pump, namely, industrial water is used as a secondary heat exchange medium, and the cooling effect is enhanced under the condition of ensuring the compact integral structure of the cooler; the cooler adopts an air outlet mode that double impellers rotate symmetrically, so that the air outlet quantity at the middle position of the air outlet is maximum, the two sides of the air outlet are reduced gradually, the middle position of the air outlet is over against the wind driven generator coupler, the bearing and other parts with high heat dissipation requirements, the utilization rate of cold air can be maximized, and the cooling effect can be ensured while the structure of the cooler is compact; in addition, install air temperature sensor and temperature sensor respectively in air outlet and outlet pipe punishment, fan subassembly and heat exchange core group power respectively with two sensors record the temperature and become positive correlation, according to cooling demand self-adaptation adjustment to reduce energy loss, improve cooling efficiency.
The specific technical scheme of the invention is as follows: the cooler for the wind driven generator comprises a square heat exchange bin; the heat exchange bin comprises an air inlet bin, an air outlet bin and a water cooling bin, and the air inlet bin, the water cooling bin and the air outlet bin are sequentially arranged along the width direction; the air inlet bin and the air outlet bin are respectively provided with an air inlet and an air outlet, the air outlet bin is provided with a fan assembly, and the water cooling bin is internally provided with a heat exchange core group; the side face of the heat exchange core group is connected with a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe extend to the outside of the water cooling bin, and the water inlet pipe and the water outlet pipe are respectively connected with the water pipes to lead cold water into the heat exchange core group and discharge hot water.
Therefore, under the action of the fan assembly, the air inlet is in negative pressure, hot air in the generator is sucked by the air inlet, and is discharged from the air outlet after passing through the heat exchange core group, and enters the interior of the generator again to exchange heat with a heating component, so that the circulating cooling of primary heat exchange medium air is realized, the heat exchange core group is provided with circulating water by an external water pump, namely industrial water is used as a secondary heat exchange medium, and the cooling effect is enhanced under the condition of ensuring the compact integral structure of the cooler.
Preferably, two groups of fan assemblies are symmetrically arranged at the air outlet bin; the fan assembly comprises an impeller, a wind collecting ring and a motor, wherein the wind collecting ring is positioned on one side, close to the water cooling bin, of the impeller, and the motor drives the impeller to rotate.
Therefore, air in the water cooling bin enters the impeller through the air collecting ring and is discharged from the air outlet under the rotation of the impeller, and the motor is controlled by the variable frequency motor through the frequency converter, so that the cooling effect is realized with the minimum energy loss.
Preferably, the impeller is opposite to the air outlet, and the opening of the air collecting ring is opposite to the heat exchange core group.
Therefore, the impeller and the wind collecting ring are positioned on an air flow path, and the cooling effect can be enhanced while the structure is compact.
Preferably, the impellers rotate in opposite directions, and both the inner sides thereof rotate in the direction of the air outlet.
From this, two the impeller all faces the air outlet intermediate position is rotatory, makes the air outlet intermediate position air output is the biggest, and both sides reduce gradually, and the air outlet intermediate position just requires high parts to the heat dissipation such as aerogenerator shaft coupling, bearing, can maximize cold wind's utilization ratio to can guarantee the cooling effect when making cooler compact structure.
Preferably, a bracket clapboard is arranged in the water-cooling bin, the side surface of the heat exchange core group is connected with the bracket clapboard, and the heat exchange core group and the bracket clapboard separate the interior of the water-cooling bin.
Therefore, the support partition plate is connected with the heat exchange core group in a sealing mode, all hot air can be guaranteed to pass through the heat exchange core group, and the cooling effect is guaranteed.
Preferably, an air duct partition plate is arranged between the heat exchange core group and the air outlet bin in the water cooling bin, is perpendicular to the heat exchange core group and is arranged in the middle of the two groups of fan assemblies.
Therefore, the air duct partition plate is arranged between the two fan assemblies, so that mutual interference between the two fan assemblies can be avoided, and the cooling efficiency is improved.
Preferably, the bracket partition plate can be adjusted along the side direction of the heat exchange core group.
Therefore, the size of the heat exchange core group is selected according to the cooling requirement of the wind driven generator, and the universality of the cooler can be improved due to the adjustable structure of the support partition plate.
Preferably, the air inlet and the air outlet extend in the length direction, and are covered and installed with a filter screen.
Therefore, the filter screens are arranged at the air inlet and the air outlet, so that large foreign matters can be prevented from entering the cooler.
Preferably, an air temperature sensor is installed at the air outlet, and a water temperature sensor is installed in the water outlet pipe.
Therefore, the air temperature sensor is installed, the fan assembly can adjust power in a self-adaptive mode according to cooling requirements, and the water temperature sensor is installed, the heat exchange core group can adjust power in a self-adaptive mode according to the cooling requirements, so that energy loss is reduced.
Preferably, the rotation speed of the motor is positively correlated with the temperature value measured by the air temperature sensor, and the rotation speed of the water pump connected with the water inlet pipe is positively correlated with the temperature value measured by the water temperature sensor.
Therefore, the higher the temperature measured by the air temperature sensor and the water temperature sensor is, the larger the cooling demand is, the rotating speed of the motor and the rotating speed of the water pump connected with the water inlet pipe can be respectively increased, so that the cooling circulation can be accelerated, and the cooling efficiency is improved.
In conclusion, the invention has the following beneficial effects:
according to the cooler for the wind driven generator, under the action of the fan assembly, hot air in the generator is sucked in from the air inlet, is discharged from the air outlet after passing through the heat exchange core group, enters the interior of the generator again to exchange heat with a heating component, so that the circulating cooling of primary heat exchange medium air is realized, the heat exchange core group is supplied with circulating water by an external water pump, namely industrial water is used as a secondary heat exchange medium, and the cooling effect is enhanced under the condition that the integral structure of the cooler is compact; the cooler adopts an air outlet mode that double impellers rotate symmetrically, so that the air outlet quantity at the middle position of the air outlet is maximum, the two sides of the air outlet are reduced gradually, the middle position of the air outlet is over against the wind driven generator coupler, the bearing and other parts with high heat dissipation requirements, the utilization rate of cold air can be maximized, and the cooling effect can be ensured while the structure of the cooler is compact; in addition, install air temperature sensor and temperature sensor respectively in air outlet and outlet pipe punishment, fan subassembly and heat exchange core group power respectively with two sensors record the temperature and become positive correlation, according to cooling demand self-adaptation adjustment to reduce energy loss, improve cooling efficiency.
Drawings
FIG. 1 is a perspective view of a cooler for a wind turbine according to the present invention;
FIG. 2 is a bottom view of a cooler for a wind power generator according to the present invention;
FIG. 3 is a sectional view of a cooler for a wind power generator according to the present invention;
FIG. 4 is a schematic view of an air outlet effect of a cooler for a wind turbine generator according to the present invention;
in the figure, 1-heat exchange bin, 11-air inlet bin, 111-air inlet, 112-air outlet, 12-air outlet bin, 13-water cooling bin, 131-bracket baffle, 132-air duct baffle, 2-fan assembly, 21-impeller, 22-air collecting ring, 23-motor, 3-heat exchange core group, 31-water inlet pipe and 32-water outlet pipe.
Detailed Description
The invention will be further explained by means of specific embodiments with reference to the drawings.
As shown in fig. 1, 2, 3 and 4, the cooler for the wind driven generator comprises a square heat exchange bin 1; the heat exchange bin 1 comprises an air inlet bin 11, an air outlet bin 12 and a water cooling bin 13, wherein the air inlet bin 11, the water cooling bin 13 and the air outlet bin 12 are sequentially arranged along the width direction; the air inlet bin 11 and the air outlet bin 12 are respectively provided with an air inlet 111 and an air outlet 112, the air outlet bin 12 is provided with a fan assembly 2, and the water cooling bin 13 is internally provided with a heat exchange core group 3; the side of the heat exchange core group 3 is connected with a water inlet pipe 31 and a water outlet pipe 32, the water inlet pipe 31 and the water outlet pipe 32 extend to the outside of the water cooling bin 13, and the water inlet pipe 31 and the water outlet pipe are respectively connected with a water pipe to introduce cold water into the heat exchange core group 3 and discharge hot water.
From this, under fan subassembly 2's effect, air intake 111 department is the negative pressure, and generator inside is hot-blast by air intake 111 being inhaled, through heat exchange core group 3 back, discharges from air outlet 112 again, gets into generator inside again and the part that generates heat carries out the heat exchange, realizes the circulative cooling of elementary heat transfer medium air, and heat exchange core group 3 is provided the circulating water by external water pump, adopts industrial water as secondary heat exchange medium promptly to strengthen the cooling effect under the circumstances of guaranteeing cooler overall structure compactness.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, two groups of fan assemblies 2 are symmetrically installed at the air outlet bin 12; the fan assembly 2 comprises an impeller 21, a wind collecting ring 22 positioned on one side of the impeller 21 close to the water cooling bin 13 and a motor 23 driving the impeller 21 to rotate.
Therefore, air in the water cooling bin 13 enters the impeller 21 through the air collecting ring 22 and is discharged from the air outlet 112 under the rotation of the impeller 21, and the motor 23 is controlled by a variable frequency motor through a frequency converter, so that the cooling effect is realized with the minimum energy loss.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the impeller 21 is opposite to the air outlet 112, and the opening of the air collecting ring 22 faces the heat exchange core group 3.
Therefore, the impeller 21 and the wind-collecting ring 22 are positioned on the air flow path, and the cooling effect can be enhanced while the structure is compact.
As shown in fig. 1, 2, 3 and 4, the rotation directions of the impellers 21 in the two sets of fan assemblies 2 are opposite, and both of the adjacent inner sides rotate toward the air outlet 112.
From this, two impellers 21 all rotate towards air outlet 112 intermediate position, make air outlet 112 intermediate position air output the biggest, both sides reduce gradually, and air outlet 112 intermediate position just requires high parts to the heat dissipation such as aerogenerator shaft coupling, bearing, can maximize cold wind's utilization ratio to can guarantee the cooling effect when making cooler compact structure.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a support partition plate 131 is arranged in the water cooling bin 13, the side surface of the heat exchange core group 3 is connected with the support partition plate 131, and the heat exchange core group 3 and the support partition plate 131 partition the inside of the water cooling bin 13.
From this, seal between support baffle 131 and the heat exchange core group 3 and be connected, can guarantee that whole hot-air all passes through from heat exchange core group 3, guarantee the cooling effect.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, an air duct partition 132 is disposed between the heat exchange core group 3 and the air outlet bin 12 in the water cooling bin 13, and the air duct partition 132 is perpendicular to the heat exchange core group 3 and is located in the middle of the two sets of fan assemblies 2.
From this, set up wind channel baffle 132 between two sets of fan subassemblies 2 and can avoid mutual interference between two fan subassemblies 2, improve cooling efficiency.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the support partition plates 131 can be adjusted along the side direction of the heat exchange core group 3.
From this, heat exchange core group 3 selects the size according to aerogenerator's cooling demand, and the commonality of cooler can be improved to support baffle 131 adjustable structure.
As shown in fig. 1, 2, 3, and 4, the air inlet 111 and the air outlet 112 extend in a length direction, and are covered with a filter net.
Therefore, the filter net is arranged at the air inlet 111 and the air outlet 112 to prevent large foreign matters from entering the cooler.
An air temperature sensor is arranged at the air outlet 112, and a water temperature sensor is arranged in the water outlet pipe 32.
From this, installation air temperature sensor can make fan subassembly 2 according to cooling demand self-adaptation adjustment power, and installation temperature sensor can make heat exchange core group 3 according to cooling demand self-adaptation adjustment power to reduce energy loss.
When the water temperature sensor works, the rotating speed of the motor 23 is in positive correlation with the temperature value measured by the air temperature sensor, and the rotating speed of the water pump connected with the water inlet pipe 31 is in positive correlation with the temperature value measured by the water temperature sensor.
From this, the higher the temperature that air temperature sensor and water temperature sensor surveyed, the cooling demand just is big more, improves the water pump rotational speed that motor 23 rotational speed and inlet tube 31 are connected respectively and can accelerate cooling cycle, improves cooling efficiency.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.
Claims (10)
1. Cooler for aerogenerator, its characterized in that: comprises a square heat exchange bin (1); the heat exchange bin (1) comprises an air inlet bin (11), an air outlet bin (12) and a water cooling bin (13), wherein the air inlet bin (11), the water cooling bin (13) and the air outlet bin (12) are sequentially arranged in the width direction; the air inlet bin (11) and the air outlet bin (12) are respectively provided with an air inlet (111) and an air outlet (112), the air outlet bin (12) is provided with a fan assembly (2), and the water cooling bin (13) is internally provided with a heat exchange core group (3); the heat exchange core group (3) side is connected with inlet tube (31) and outlet pipe (32), inlet tube (31) with outlet pipe (32) extend to outside water-cooling storehouse (13), it is right to connect the water pipe respectively heat exchange core group (3) lets in cold water and discharge hot water.
2. The cooler for a wind power generator according to claim 1, characterized in that: two groups of fan components (2) are symmetrically arranged at the air outlet bin (12); the fan assembly (2) comprises an impeller (21), a wind collecting ring (22) and a motor (23), wherein the wind collecting ring (22) is positioned on one side, close to the water cooling bin (13), of the impeller (21), and the motor drives the impeller (21) to rotate.
3. The cooler for a wind power generator according to claim 2, characterized in that: the impeller (21) is opposite to the air outlet (112), and the opening of the air collecting ring (22) is opposite to the heat exchange core group (3).
4. The cooler for a wind power generator according to claim 3, characterized in that: the rotating directions of the impellers (21) are opposite, and the inner sides of the impellers rotate towards the direction of the air outlet (112).
5. The cooler for a wind power generator according to claim 1, characterized in that: be equipped with support baffle (131) in water-cooling storehouse (13), heat exchange core group (3) side with support baffle (131) are connected, heat exchange core group (3) with support baffle (131) will inside the partition in water-cooling storehouse (13).
6. The cooler for a wind power generator according to claim 5, characterized in that: be located in water-cooling storehouse (13) heat exchange core group (3) with be equipped with wind channel baffle (132) between play storehouse (12), wind channel baffle (132) perpendicular to heat exchange core group (3) is located two sets of fan subassembly (2) intermediate position.
7. The cooler for a wind power generator according to claim 5, characterized in that: the support partition plates (131) can be adjusted along the side edge direction of the heat exchange core group (3).
8. The cooler for a wind power generator according to claim 1, characterized in that: the air inlet (111) and the air outlet (112) extend along the length direction and are covered and provided with filter screens.
9. The cooler for a wind power generator according to any one of claims 2 to 8, characterized in that: an air temperature sensor is installed at the air outlet (112), and a water temperature sensor is installed in the water outlet pipe (32).
10. The cooler for a wind power generator according to claim 9, characterized in that: the motor (23) rotational speed with the temperature value that air temperature sensor surveyed becomes positive correlation, the water pump rotational speed that inlet tube (31) are connected with the temperature value that the water temperature sensor surveyed becomes positive correlation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111033715.3A CN113708567A (en) | 2021-09-03 | 2021-09-03 | Cooler for wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111033715.3A CN113708567A (en) | 2021-09-03 | 2021-09-03 | Cooler for wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113708567A true CN113708567A (en) | 2021-11-26 |
Family
ID=78659616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111033715.3A Pending CN113708567A (en) | 2021-09-03 | 2021-09-03 | Cooler for wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113708567A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023133923A1 (en) * | 2022-01-13 | 2023-07-20 | 浙江尔格科技股份有限公司 | Direct cooler for wind turbine |
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| CN201947117U (en) * | 2011-01-19 | 2011-08-24 | 浙江尔格科技有限公司 | Air-water cooler for wind turbine generators |
| CN102156520A (en) * | 2011-04-02 | 2011-08-17 | 曙光信息产业(北京)有限公司 | Server cooling device |
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| WO2023133923A1 (en) * | 2022-01-13 | 2023-07-20 | 浙江尔格科技股份有限公司 | Direct cooler for wind turbine |
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Application publication date: 20211126 |