CN114498989A - Wind driven generator with cooling function - Google Patents
Wind driven generator with cooling function Download PDFInfo
- Publication number
- CN114498989A CN114498989A CN202111637726.2A CN202111637726A CN114498989A CN 114498989 A CN114498989 A CN 114498989A CN 202111637726 A CN202111637726 A CN 202111637726A CN 114498989 A CN114498989 A CN 114498989A
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- Prior art keywords
- cooling
- rear end
- cooling medium
- stator
- function according
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Links
- 238000001816 cooling Methods 0.000 title claims abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000002826 coolant Substances 0.000 claims description 46
- 238000009423 ventilation Methods 0.000 claims description 14
- 239000000110 cooling liquid Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 description 5
- 210000003205 muscle Anatomy 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for 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
- H02K9/02—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
- 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
Abstract
The invention relates to a wind driven generator with a cooling function, which comprises a rear end cover and a base used for fixing the rear end cover, wherein a cooling module used for air cooling of a rotor core is arranged on the rear end cover, the rotor core is arranged on a bearing seat, a stator core is arranged on the outer ring of the rotor core, and the stator core is cooled by water cooling through a stator water jacket arranged on the outer ring of the stator core. The wind driven generator combines the stator water cooling and the rotor air cooling, and solves the problems of large heat productivity, insufficient heat dissipation capacity and the like caused by high power density of a 10MW-20MW power level motor; the problems of large volume, limited space layout, large operation vibration noise and low heat exchange efficiency of a single rotor cooling system are solved.
Description
Technical Field
The invention belongs to the technical field of wind driven generators, and relates to a wind driven generator with a cooling function.
Background
The semi-direct-drive permanent magnet synchronous wind driven generator has the advantages of high power density and small size, is widely applied to the field of wind power generation at present, and is particularly widely applied to offshore wind power by the characteristics of small size, compact structure and high reliability. However, along with the continuous increase of the power of the motor, the heat productivity of the generator is also increased, the temperature rise problem of the motor is more and more prominent, and the bottleneck restricting the development of the motor is formed. Therefore, it is necessary to design a new motor structure to meet the heat dissipation requirement of the high power density generator.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a wind driven generator with an efficient cooling function, and solves the problems that the single machine power of a half direct-drive permanent magnet wind driven generator is continuously increased, the power density is high, the loss of a motor is increased, the heat dissipation capacity is insufficient, the size of a set of cooling system is increased, the installation layout is difficult, and the vibration noise is large during operation.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a aerogenerator with cooling function, its characterized in that includes the rear end cap and is used for the frame of fixed rear end cap, be provided with on the rear end cap and be used for carrying out the air-cooled cooling module to rotor core, rotor core sets up on the bearing frame, the rotor core outer lane is provided with stator core, stator core carries out water-cooling through the stator water jacket that its outer lane set up.
Furthermore, a plurality of groups of ventilation openings are arranged on the circumferential surface of the rear end cover, each group of ventilation openings comprises a cooling medium outlet and a cooling medium inlet, an air guide cylinder is arranged on the cooling medium inlet and is connected with an air outlet of the cooling module, and the cooling medium outlet is connected with an air inlet of the cooling module.
Furthermore, four groups of ventilation openings are uniformly distributed on the circumferential surface of the rear end cover, and baffles are arranged between every two ventilation openings of the four groups of ventilation openings and used for dividing the inner cavity of the generator into four parts.
Furthermore, a wind blocking barrel is arranged in the middle of the rear end cover, and the cooling medium is sealed inside the motor to form a sealed cavity.
Furthermore, a cooling channel through which cooling liquid passes is arranged in the cooling module, a gap is formed between the cooling channels, and when cooling medium passes through the gap, heat is taken away by low-temperature liquid in the cooling channel, is converted from a hot state to a cold state, and is sent to a cooling medium outlet through a cooling fan.
Furthermore, an air duct for circulating a cooling medium is formed at the bottom of the machine base and the lower surfaces of the stator iron core and the rotor iron core.
Furthermore, the stator water jacket is a closed cavity formed by the first flange, the outer cylinder, the inner cylinder and the second flange, the cavity is divided into two mutually independent parts by the isolating ring, cooling media respectively enter the cavity from the two inlets and respectively flow out from the outlets after circulation.
Furthermore, a plurality of baffle strips are arranged on the inner cylinder, cooling liquid flows in the cavity and generates vortex through the baffle strips, and the heat exchange efficiency of the cooling medium is increased and heat is taken away through vortex and turbulence effects.
Compared with the prior art, the invention has the following beneficial effects:
the wind driven generator combines stator water cooling and rotor air cooling, adopts a scheme of a modular cooling system, and solves the problems of large heat productivity, insufficient heat dissipation capacity and the like caused by high power density of a 10MW-20MW power level motor; the problems of large volume, limited space layout, large operation vibration noise and low heat exchange efficiency of a single rotor cooling system are solved.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is an internal structural view of a wind power generator according to the present invention;
FIG. 2 is an overall structural view of a wind power generator according to the present invention;
FIG. 3 is a rear end cover structure of the wind power generator of the present invention;
FIG. 4 is a rear end cover structure of the wind power generator of the present invention;
FIG. 5 is a block diagram of a wind power generator;
FIG. 6 is a view showing a structure of a water jacket of a stator of a wind power generator according to the present invention;
FIG. 7 is a sectional view of a water jacket of a stator of a wind turbine according to the present invention;
FIG. 8 is an internal structure view of a centrifugal fan of a wind power generator according to the present invention;
wherein: 1. a rear end cap; 2. a machine base; 3. a stator water jacket; 4. a stator core; 5. a rotor core; 6. a bearing seat; 7. a cooling module; 1.1, a cooling medium outlet; 1.2, a cooling medium inlet; 1.3, a baffle plate; 1.4, an air duct; 1.5, a wind shielding cylinder; 2.1, an air duct; 3.1, a stop bar; 3.2, an isolation ring; 3.3, an inlet; 3.4, an outlet; 3.5, a first flange; 3.6, an outer cylinder; 3.7, inner cylinder; 3.8, a second flange; 7.2, cooling a fan; 7.4, cooling channels; 7.5, clearance.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the appended claims.
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and examples.
The utility model provides a aerogenerator with cooling function, includes rear end cap 1 and is used for the frame 2 of fixed rear end cap 1, be provided with on the rear end cap 1 and be used for carrying out the air-cooled cooling module 7 to rotor core 5, rotor core 5 sets up on bearing frame 6, 5 outer lanes of rotor core are provided with stator core 4, stator core 4 carries out water-cooling through the stator water jacket 3 that its outer lane set up. The circumferential surface of the rear end cover 1 is provided with a plurality of groups of ventilation openings, each group of ventilation openings comprises a cooling medium outlet 1.1 and a cooling medium inlet 1.2, the cooling medium inlet 1.2 is provided with an air guide cylinder 1.4, the air guide cylinder 1.4 is connected with an air outlet of the cooling module 7, and the cooling medium outlet 1.1 is connected with an air inlet of the cooling module 7.
Specifically, four groups of ventilation openings are uniformly distributed on the circumferential surface of the rear end cover 1, and baffle plates 1.3 are arranged between every two ventilation openings of the four groups of ventilation openings and used for dividing the inner cavity of the generator into four parts.
The rotor part of the generator is cooled by a modularized cooling system, the circumference of the generator is evenly divided into four modules, each module is independently provided with a cooling device, and the module is independently cooled. The inlet and the outlet of a cooling medium are designed on the rear end cover, the partition baffle is designed at the same time, the internal cavity of the generator is effectively divided, the wind blocking barrel 1.5 is designed on the inner circle side of the rear end cover, the sealing performance of the inner cavity of the whole generator is guaranteed, and the cooling medium is prevented from leaking.
Furthermore, a wind blocking barrel 1.5 is arranged in the middle of the rear end cover 1, and the wind blocking barrel 1.5 ensures the sealing performance of the inner cavity of the whole generator and prevents the leakage of a cooling medium.
Specifically, a cooling channel 7.4 through which cooling liquid passes is arranged in the cooling module 7, a gap 7.5 is formed between the cooling channels 7.4, and when cooling medium passes through the gap 7.5, heat is taken away by low-temperature liquid in the cooling channel 7.4, the heat is converted from a hot state to a cold state, and the cold state is sent to a cooling medium inlet 1.2 through a cooling fan 7.2, so that cold and heat exchange of the cooling medium is completed, and power is provided for circulation of the whole rotor cooling system.
Further, an air duct 2.1 for circulation of cooling media is formed at the bottom of the machine base 2, the lower surfaces of the stator core 4 and the rotor core 5, so that effective passing of the cooling media of each module is met, and independent circulation is realized. The frame 2 plays the effect of supporting whole generator stator core 4, rotor core 5 and rear end cap 1, and 2 inner walls of frame are provided with the muscle and the axial muscle of a plurality of circumferencial direction, strengthen the intensity of whole motor, have seted up a plurality of passageway 2.1 simultaneously on the strengthening rib, form coolant's circulation passageway, with the leading-in other end of coolant from the one end of motor, realize the separation between the different modules and the function that switches on of medium.
The design of the rear end cover 1 uses the partition baffle 1.3 to realize effective division of the inner cavity of the generator, the inlet and outlet functions of the cooling medium are realized by arranging the inlet and the outlet of the cooling medium, the structure of the air duct 1.4 meets the requirement that the cooling medium passes through according to the designed path, and the structure of the wind shielding tube 1.5 realizes the sealing function of the cavity of the generator. Cooling medium passes through cooling medium inlet 1.2, inside the air duct 1.4 enters into the fan, through the inside wind channel 2.1 of generator, the air gap between stator core 4 and rotor core 5, get back to inside the cooling fan through the cooling medium export at last, accomplish a circulation, simultaneously, the inside cavity of generator is shaded through the subregion and is divided into four modules equally evenly, a cooling device is designed alone to every module, realize cooling function alone to this module, the side design of circle in the rear end cover keeps off dryer 1.5, guarantee the leakproofness of whole generator inner chamber, prevent cooling medium leakage, the cooling medium passageway that the design corresponds on frame 2, use rotor cooling module to realize the independent cooling of single module.
Specifically, a stator core 4 is arranged on the outer ring of a rotor core 5, the stator core 4 is subjected to water cooling through a stator water jacket 3 arranged on the outer ring of the stator core, the stator water jacket 3 forms a closed cavity by four parts, namely a first flange 3.5, an outer cylinder 3.6, an inner cylinder 3.7 and a second flange 3.8, the cavity is divided into two mutually independent parts by a partition ring 3.2, a cooling medium enters the cavity from two inlets 3.3 respectively and flows out from an outlet 3.4 after circulation, a plurality of stop bars 3.1 are arranged on the inner cylinder 3.7, the cooling liquid flows in the cavity and generates vortex through the stop bars 3.1, and then the heat exchange efficiency of the cooling medium is increased by utilizing vortex and turbulence effects, so that more heat is taken away, and the heat exchange efficiency of a cooling system is improved.
The invention can realize the heat dissipation requirement that the single machine power of the existing compact type semi-direct-drive wind driven generator reaches 10-20MW level and the heat productivity is about 400kW, and through the invention, the wind driven generator with the cooling function comprises a stator water jacket structure with high heat exchange efficiency and a modularized rotor cooling structure with high heat exchange efficiency, the high-efficiency heat exchange of the motor is realized, the capacity maximization of the offshore wind driven generator unit is promoted, the resource development and utilization rate is improved, the user income maximization is realized, and the problems of large heat productivity, insufficient heat dissipation capacity and the like caused by high power density of the motor with the power grade of 10MW-20MW are solved; the problems of large volume, limited space layout, large operation vibration noise and low heat exchange efficiency of a single rotor cooling system are solved.
The invention is provided with a stator water jacket structure with high heat exchange efficiency, a modularized rotor cooling structure with high heat exchange efficiency and a rotor cooling loop with good sealing performance; the stator water jacket has high cooling efficiency, and the rotor cooling adopts a brand new scheme of modular design, thereby meeting the heat dissipation requirement of improving the power of the whole machine. The rear end cover is designed to use the partition baffle plate to realize effective division of the inner cavity of the generator, the through holes are formed to realize the inlet and outlet functions of a cooling medium, the air duct structure meets the requirement that the cooling medium passes through according to a designed path, and the wind shielding tube structure realizes the sealing function of the cavity of the generator. The inner cavity of the water channel in the stator water jacket is provided with the baffle bars, and the heat exchange efficiency of the cooling medium is increased by using the vortex and turbulence effects, so that more heat is taken away, and the heat exchange efficiency of the cooling system is improved. The frame inner wall is provided with the muscle and the axial muscle of a plurality of circumferencial direction, strengthens the intensity of whole motor, has seted up a plurality of passageway simultaneously on the strengthening rib, forms coolant's circulation passageway, with the leading-in other end of coolant from the one end of motor, realizes the separation between the different modules and the function that switches on of medium.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (8)
1. The utility model provides a aerogenerator with cooling function, its characterized in that, includes rear end cap (1) and is used for frame (2) of fixed rear end cap (1), be provided with on rear end cap (1) and be used for carrying out air-cooled cooling module (7) to rotor core (5), rotor core (5) set up on bearing frame (6), rotor core (5) outer lane is provided with stator core (4), stator core (4) carry out the water-cooling through stator water jacket (3) that its outer lane set up.
2. The wind driven generator with the cooling function according to claim 1, wherein a plurality of groups of ventilation openings are arranged on the circumferential surface of the rear end cover (1), each group of ventilation openings comprises a cooling medium outlet (1.1) and a cooling medium inlet (1.2), an air guide cylinder (1.4) is arranged on the cooling medium inlet (1.2), the air guide cylinder (1.4) is connected with an air outlet of the cooling module (7), and the cooling medium outlet (1.1) is connected with an air inlet of the cooling module (7).
3. The wind power generator with the cooling function according to claim 2, wherein the ventilation openings are arranged in four groups and evenly distributed on the circumferential surface of the rear end cover (1), and baffles (1.3) are arranged between every two ventilation openings of the four groups and used for dividing the inner cavity of the generator into four parts.
4. The wind power generator with the cooling function according to claim 1, characterized in that a wind blocking cylinder (1.5) is arranged in the middle of the rear end cover (1).
5. A wind power generator with cooling function according to claim 1, wherein the cooling module (7) is internally provided with cooling channels (7.4) for cooling liquid to pass through, gaps (7.5) are formed between the cooling channels (7.4), and when the cooling medium passes through the gaps (7.5), heat is taken away by the low-temperature liquid in the cooling channels (7.4), is converted from a hot state to a cold state, and is sent to the cooling medium inlet (1.2) through the cooling fan (7.2).
6. A wind power generator with cooling function according to claim 1, characterized in that the bottom of the machine base (2) and the lower surfaces of the stator core (4) and the rotor core (5) form an air duct (2.1) for the circulation of a cooling medium.
7. The wind power generator with the cooling function according to claim 1, wherein the stator water jacket (3) is a closed cavity formed by four parts, namely a first flange (3.5), an outer cylinder (3.6), an inner cylinder (3.7) and a second flange (3.8), the cavity is divided into two mutually independent parts by a separating ring (3.2), and cooling media respectively enter the cavity from two inlets (3.3) and respectively flow out from an outlet (3.4) after circulation.
8. The wind driven generator with the cooling function according to claim 7, characterized in that a plurality of baffle strips (3.1) are arranged on the inner cylinder (3.7), and the cooling liquid flows through the baffle strips (3.1) in the cavity to generate vortex, so that the heat exchange efficiency of the cooling medium is increased and the heat is taken away through the vortex and the turbulence effects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111637726.2A CN114498989B (en) | 2021-12-29 | 2021-12-29 | Wind driven generator with cooling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111637726.2A CN114498989B (en) | 2021-12-29 | 2021-12-29 | Wind driven generator with cooling function |
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| Publication Number | Publication Date |
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| CN114498989A true CN114498989A (en) | 2022-05-13 |
| CN114498989B CN114498989B (en) | 2024-03-26 |
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| CN202111637726.2A Active CN114498989B (en) | 2021-12-29 | 2021-12-29 | Wind driven generator with cooling function |
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| CN114498989B (en) | 2024-03-26 |
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