CN202586575U - Dome, cooling ventilation system and double-fed wind generator - Google Patents
Dome, cooling ventilation system and double-fed wind generator Download PDFInfo
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- CN202586575U CN202586575U CN 201220149703 CN201220149703U CN202586575U CN 202586575 U CN202586575 U CN 202586575U CN 201220149703 CN201220149703 CN 201220149703 CN 201220149703 U CN201220149703 U CN 201220149703U CN 202586575 U CN202586575 U CN 202586575U
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- kuppe
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Abstract
The utility model provides a dome, a cooling ventilation system and a double-fed wind generator. The cooling ventilation system is used by the wind generator which comprises a ring plate and a support plate for supporting the ring plate. The cooling ventilation system comprises the dome which is arranged at at least one end of a rotor. The dome comprises a ring-shaped part and an arc-shaped part which extends along an inner circumferential surface of the ring-shaped part. A radial section of the arc-shaped part is a circular ring shape whose inner diameter is gradually decreased from a first terminal of the arc-shaped part to a second terminal of the arc-shaped part. The dome is sleeved in the ring plate and is fixedly connected with the ring plate. According to the dome, the cooling ventilation system and the double-fed wind generator, the dome is installed at a rotor end part, an axial flow fan is saved, air pressure generated by the rotation of a rotor radial ventilation hole is used to drive a fluid body to reach an internal part of a stator winding to carry out heat exchange, after the dome is used, an end part flow field is divided into two parts, eddy current loss caused by the collision with the fluid body generated in the rotor end part is avoided, thus a series of irregular stray flows tend to be ordered, and system air volume is raised.
Description
Technical field
The utility model relates to wind power generation field, is meant a kind of kuppe, cooling-fan installation and double-fed wind power generator especially.
Background technology
Wind power generation receives whole world extensive concern day by day as cleaning, regenerative resource.At present, most widely used wind-driven generator is a double-fed wind power generator.Double-fed wind power generator is when work, and stator winding, rotor winding and meeting unshakable in one's determination produce great amount of heat, need cooling system that it is cooled off.
At present; The type of cooling of double-fed wind power generator mainly is air-cooled, and the air cooling system structure is as shown in Figure 1, and end ring flat-plate 3 ' is installed on the annular backup pad 8 '; Windshield 2 ' is installed on the end ring flat-plate 3 ', and aerofoil fan 1 ' is installed below windshield 2 '.Rotor 5 ' is installed on the rotor field spider 4 ', and rotor 5 ' is provided with axial ventilation hole 6 ' and radial ventilation hole 7 ', and stator is provided with radial ventilation hole 9 '.During cooling; Cooling air gets into cooler and carries out heat exchange from air gap, the 9 ' back of passing through successively between aerofoil fan 1 ', rotor field spider 4 ', rotor axial ventilation hole 6 ', rotor radial ventilation hole 7 ', rotor and the stator after the cooler air outlet flows out, stator radial ventilation hole, accomplishes a circulation.Circulating current is taken away the heat in rotor and the stator, and it is cooled off.But this kind type of cooling has following defective: cooling air needs aerofoil fan 1 ' that it is pressurizeed, and need be provided for the mount pad of installation shaft flow fan 1 ', makes system configuration complicated.And from aerofoil fan 1 ' effluent air, the fluid collision that produces with rotor tip and produce eddy current and cause loss excessive sharply reduces the fluid flow through stator and rotor, and air inlet overcurrent poor-performing, and the winding overhang cooling remains improvement.
The utility model content
The utility model provides a kind of kuppe; This kuppe is used for the cooling-fan installation of wind-driven generator, has solved the existing cooling system structure problem that loss is big, the winding overhang cooling is not in place complicated, that in cooling procedure, cause owing to fluid collision generation eddy current.The utility model a kind of the have cooling-fan installation of above-mentioned kuppe and the double-fed wind power generator with this cooling-fan installation also be provided on the other hand.
On the one hand, the utility model provides a kind of kuppe, and kuppe comprises ring part and the curved portions of extending along the inner peripheral surface of ring part; Wherein the radial section of curved portions is an annular, and second end of the internal diameter of annular from first end of curved portions to curved portions reduces gradually.
Further, ring part and the curved portions structure that is formed in one.
Kuppe global shape in the utility model is streamlined, from the ring part to the curved portions, for seamlessly transitting, when fluid flows through, can reduce resistance, reduces the wastage, and makes fluid keep crossing preferably fluidity and higher pressure head.
On the other hand, the utility model also provides a kind of cooling-fan installation, is used for wind-driven generator, and wind-driven generator comprises ring flat-plate and be used to support the supporting bracket of ring flat-plate, and cooling-fan installation comprises at least the kuppe that the end at rotor is provided with; Wherein kuppe comprises ring part and the curved portions of extending along the inner peripheral surface of ring part; Wherein the radial section of curved portions is an annular, and second end of the internal diameter of annular from first end of curved portions to curved portions reduces gradually; Kuppe is set in the ring flat-plate, and is fixedly connected with ring flat-plate.
Further, ring part and the curved portions structure that is formed in one.
Further, supporting bracket is provided with ventilation hole.
Further, ventilation hole circumferentially evenly distributing along supporting bracket.
Further, the radial section radius of curved portions second end is less than or equal to the least radius of rotor winding radial section.
Further, the ring part of kuppe is 50～100 millimeters to the distance near the stator end of this ring part.
The utility model is installed kuppe at rotor tip; Saved aerofoil fan; The blast that utilizes the rotation of rotor radial ventilation hole to produce comes drive fluid arrival stator winding inside to carry out heat exchange; Avoid the eddy current loss that causes with the collision of the fluid that produces from rotor tip, made a series of irregular spuious flowing be tending towards ordering, improved systematic air flow.
Another aspect, the utility model also provide a kind of double-fed wind power generator, are provided with above-mentioned each described cooling-fan installation.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the axial cutaway view of existing double-fed wind power generator cooling system;
Fig. 2 is the axial cutaway view of the utility model cooling-fan installation embodiment;
Fig. 3 is the stereogram of the utility model kuppe embodiment;
Fig. 4 is the stereogram of the opposite side of the utility model kuppe embodiment;
Fig. 5 is the axial cutaway view of the utility model kuppe embodiment;
Fig. 6 is the vertical view of the utility model kuppe embodiment;
Fig. 7 is the stereogram of the utility model cooling-fan installation embodiment rotor rotating shaft;
Among the figure: 1, kuppe, 2, supporting bracket, 3, cooler, 4, rotor field spider, 5, rotor; 6, ring flat-plate, 7, stator, 8, rotor winding overhang cavity, 9, the stator end cavity, 10, bolt; 11, the air gap between the rotor, 12, baffle plate radially, 14, the electric machine stand air inlet, 110, ring part, 120, curved portions; 130, connecting hole, 51, the rotor axial ventilation hole, 52, the rotor radial ventilation hole, 71, stator radial ventilation hole, 21, the supporting bracket ventilation hole.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention carried out clear, intactly description, obviously; Described embodiment only is the present invention's part embodiment; Rather than whole embodiment, under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other; And; Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belongs to the scope that the present invention protects.
Kuppe embodiment:
Referring to Fig. 3-Fig. 6, the preferred embodiment of the utility model kuppe has been shown among the figure.As shown in the figure, kuppe comprises ring part 110 and the curved portions 120 of extending along the inner peripheral surface of ring part 110, and the radial section of curved portions 120 is an annular, and second end of annular external diameter from first end of curved portions 120 to curved portions 120 reduces gradually.Wherein, first end of curved portions 120 is the end near ring part 110, and second end is the end away from ring part 110.
As can be seen from the figure, ring part 110 is a plane annular structure, is provided with connecting hole 130 in this structure near outer circumferential position.Curved portions 120 is arranged on the inner peripheral surface of ring part 110, and the radial section of curved portions 120 is an annular, and axial cross section is the hyperbola of relative axis symmetry, and the arc-shaped inner surface of curved portions 120 can better reduce resistance, makes fluid have better fluidised form.The radial section radius of curved portions 120 reduces to second end from first end gradually, and the inner surface that makes curved portions 120 is for seamlessly transitting, in addition, from the inner peripheral surface of ring part 110 to curved portions 120 also for seamlessly transitting.Need to prove: inner peripheral surface is the periphery near axis in the present embodiment, and outer circumference surface is the periphery away from axis.
During practical implementation, ring part 110 is preferably processed to integrated formed structure with curved portions 120.
Kuppe global shape in the utility model is streamlined, and 120 for seamlessly transitting from ring part 110 to curved portions, when fluid flows through, can reduce resistance, reduces the wastage, and makes fluid keep crossing preferably fluidity and higher pressure head.
Cooling-fan installation embodiment:
Referring to Fig. 2, Fig. 7, the preferred embodiment of the utility model cooling-fan installation has been shown among the figure.This cooling-fan installation is used for the cooling of generator, is example to be used for double-fed wind power generator below, in conjunction with accompanying drawing it is elaborated.
Referring to Fig. 2, should be appreciated that in conjunction with prior art double-fed wind power generator comprises rotor 5, stator 7, is installed in the supporting bracket 2 of stator 7 ends and is installed in the ring flat-plate 6 on the supporting bracket 2 that ring flat-plate 6 is arranged on the end of stator 7.Rotor 5 is installed in the rotating shaft through rotor field spider 4; The concrete structure of rotating shaft is referring to Fig. 7; Be provided with radially baffle plate 12, be provided with rotor axial ventilation hole 51 in the both sides of baffle plate 12 radially at the medium position of rotating shaft, baffle plate 12 makes the left and right sides of rotor 5 form the circulation air path of two symmetries.Rotor field spider 4 is provided with ventilating hole channel, and rotor 5 is provided with rotor radial ventilation hole 52, and stator 7 is provided with stator radial ventilation hole 71, in the outer setting of stator 7 cooler 3 is arranged.The double-fed wind power generator pyrotoxin is mainly stator winding, rotor winding and rotor core; Cooling air gets in the motors from electric machine stand air inlet 14, and air gap 11,71 backs, stator radial ventilation hole passed successively then between ventilation hole on the rotor field spider 4, rotor axial ventilation hole 51, rotor radial ventilation hole 52, the rotor get into coolers 3 and carry out heat exchange.
This cooling-fan installation embodiment comprises a kuppe 1 at least, and kuppe 1 comprises ring part 110 and in the extended curved portions 120 of the inner peripheral surface of ring part 110, its concrete structure gets final product referring to kuppe embodiment, and the utility model repeats no more at this.Kuppe 1 is arranged on the end of rotor 5, and is sleeved in the ring flat-plate 6, and its ring part 110 is fixedly connected with ring flat-plate 6.Wherein, kuppe 1 is streamlined, can effectively reduce resistance, reduce the wastage.Kuppe 1 is arranged in the end of rotor 5, the blast Fluid Motion Driven By Moving that its radial ventilation hole 52 produces when utilizing rotor 5 rotations.Its cyclic process is: the fluid of kuppe 1 curved portions 120 of flowing through; Under the driving of rotor 5 end blast; Arrive the back (away from a side of rotor shaft) of stator 7 successively through the air gap 11 between rotor field spider 4, rotor axial ventilation hole 51, rotor radial ventilation hole 52, rotor 5 and the stator 7,71 backs, stator radial ventilation hole; Take away the heat in rotor 5 and the stator 7; Get into then and carry out heat exchange in the cooler 3, the cold air after cooler 3 heat exchange gets into kuppe 1 once more from electric machine stand air inlet 14, so far accomplishes a circulation.In the present embodiment, when fluid flows through kuppe 1, can reduce resistance, reduce the wastage, make fluid keep crossing preferably fluidity and higher pressure head; Simultaneously, during rotor 5 rotations, the blast that its radial ventilation hole 52 produces in rotor 5 ends can drive the cooling air that flows out from kuppe 1 and get into the ventilation hole on the rotor field spider 4, does not need aerofoil fan is set in addition, has simplified system configuration.People from this area is to be understood that; The rotating speed of the cooling effect of present embodiment and rotor 5 has direct relation, and the rotating speed of rotor 5 is high more, and the blast that rotor radial ventilation hole 52 produces in rotor 5 ends can be big more; The speed of cooling air circulation can be fast more, also can be good more to the cooling effect of rotor.
Preferably, referring to Fig. 2, the radial section radius of kuppe 1 second end is less than or equal to the least radius of rotor winding radial section.At this moment, curved portions 120 second ends of kuppe 1 are less than or equal to the minimum range of rotor winding to rotor shaft to the distance of rotor shaft.The purpose that is provided with like this is in order to make cooling air better get into rotor axial ventilation hole 51.
Preferably, referring to Fig. 2, supporting bracket 2 is provided with supporting bracket ventilation hole 21, and being provided with of supporting bracket ventilation hole 21 can form cooling air duct in the rotor end, reach the purpose to the cooling of rotor end.Its cyclic process is: cooling air is flowed through behind the kuppe 1; Wherein a part of cooling air flows into rotor winding overhang cavity 8; The fluid that arrives the back of stator 7 through stator end cavity 9, supporting bracket ventilation hole 21 backs successively again then and from stator radial ventilation hole 71, flow out converges the back and gets into cooler 3.Being provided with of supporting bracket ventilation hole 21 can be cooled off rotor end winding effectively, makes end winding heat exchange more abundant.Simultaneously, being provided with of supporting bracket ventilation hole 21 can also effectively reduce Reynolds number, and the flow field that is tending towards laminar flow has reduced eddy current loss, greatly brought into play the effect of rotor tip as the pressure head element.Need to prove that the aperture of supporting bracket ventilation hole 21 and quantity can confirm according to actual needs that the utility model is not done any qualification to it.Further preferably, supporting bracket ventilation hole 21 circumferentially evenly distributes along supporting bracket 2, and evenly distribution can make fluid along circumferentially evenly the flowing through of supporting bracket 2, and reduces eddy current, reduces the wastage.
During practical implementation, the ring part 110 of kuppe 1 can be taken as 50～100 millimeters to the distance near the stator end of this ring part 110.Ring flat-plate 6 is provided with the connecting hole (not shown), and bolt 10 is fixed on kuppe 1 on the ring flat-plate 6 after passing the connecting hole 130 on this connecting hole and the kuppe 1.
During practical implementation, a kuppe 1 can be set at an end of rotor 5, also a kuppe 1 can respectively be set at the two ends of rotor 5.When simultaneously kuppe 1 being set in rotor 5 both sides, the refrigerating gas endless form of both sides is identical, is that example describes with a side wherein below.
As shown in Figure 2, the cooling air loop is: cooling air flows out from cooler 3 end air outlets, arrives motor bodies through electric machine stand air inlet 14, and air is flowed through and is divided into two-way behind the kuppe 1; Wherein one the tunnel flow through successively and reach stator 7 backs behind air gap 11 between ventilation hole on the rotor field spider 4, rotor axial ventilation hole 51, rotor radial ventilation hole 52, the rotor, the stator radial ventilation hole 71; Rotor winding overhang cavity 8, stator end cavity 9, supporting bracket ventilation hole 21 backs of flowing through successively, another road arrive the backs of stators 7; Converge behind the back of above two-way fluid arrival stator 7, get into cooler 3 and carry out heat exchange, and then carry out next cool cycles in the entering motor body.
Compared with prior art; The utlity model has following advantage: the utility model need not be provided with aerofoil fan, fan base and baffle plate, but in the end of rotor kuppe is installed (with the winding overhang distance within the creepage distance allowed band), and on supporting bracket spending fagging ventilation hole; When utilizing the rotor rotation; Its radial ventilation hole makes its arrival stator winding inside and end carry out heat exchange in the blast drive fluid that rotor tip produces, and has avoided the eddy current loss that causes with the collision of the fluid that produces from rotor tip; Make a series of irregular spuious flowing be tending towards ordering, improved systematic air flow.In addition,, increased the water conservancy diversion effect of rotor end, made the fluid that cooled off stator end can arrive stator back smoothly and get into cooler then and carry out heat exchange owing to have the supporting bracket ventilation hole on the supporting bracket.In addition, the setting of supporting bracket ventilation hole also makes the motor body inflow-rate of water turbine increase, and the plane binary of end flows and is tending towards gradual flow field, thereby has improved reliability of system operation owing to cancelled aerofoil fan when reducing the wastage.
Double-fed wind power generator embodiment:
The utility model also provides a kind of double-fed wind power generator, and this generator is provided with cooling-fan installation, and its concrete structure gets final product with reference to above-mentioned explanation, and the utility model repeats no more.
Because cooling-fan installation has above-mentioned effect, the double-fed wind power generator with this cooling-fan installation also has identical technique effect.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (9)
1. a kuppe is characterized in that, said kuppe comprises the curved portions (120) that the inner peripheral surface of ring part (110) and the said ring part in edge (110) extends; Wherein
The radial section of said curved portions (120) is an annular, and second end of the internal diameter of said annular from first end of said curved portions (120) to said curved portions (120) reduces gradually.
2. kuppe according to claim 1 is characterized in that, said ring part (110) and said curved portions (120) structure that is formed in one.
3. a cooling-fan installation is used for wind-driven generator, and said wind-driven generator comprises ring flat-plate (6) and is used to support the supporting bracket (2) of ring flat-plate (6), it is characterized in that, said cooling-fan installation comprises at least the kuppe (1) that the end at rotor (5) is provided with; Wherein
Said kuppe (1) comprises the curved portions (120) that the inner peripheral surface of ring part (110) and the said ring part in edge (110) extends; The radial section of wherein said curved portions (120) is an annular, and second end of the internal diameter of said annular from first end of said curved portions (120) to said curved portions (120) reduces gradually;
Said kuppe (1) is set in the said ring flat-plate (6), and is fixedly connected with said ring flat-plate (6).
4. cooling-fan installation according to claim 3 is characterized in that, said ring part (110) and said curved portions (120) structure that is formed in one.
5. cooling-fan installation according to claim 4 is characterized in that, said supporting bracket (2) is provided with supporting bracket ventilation hole (21).
6. cooling-fan installation according to claim 5 is characterized in that, said supporting bracket ventilation hole (21) circumferentially evenly distributes along said supporting bracket (2).
7. according to each described cooling-fan installation among the claim 3-6, it is characterized in that the radial section radius of said curved portions (120) second ends is less than or equal to the least radius of rotor winding radial section.
8. according to the cooling-fan installation described in the claim 7, it is characterized in that the ring part (110) of said kuppe (1) is 50～100 millimeters to the distance near the stator end of this ring part (110).
9. a double-fed wind power generator is characterized in that, is provided with each described cooling-fan installation among the claim 3-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220149703 CN202586575U (en) | 2012-04-10 | 2012-04-10 | Dome, cooling ventilation system and double-fed wind generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220149703 CN202586575U (en) | 2012-04-10 | 2012-04-10 | Dome, cooling ventilation system and double-fed wind generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202586575U true CN202586575U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220149703 Expired - Fee Related CN202586575U (en) | 2012-04-10 | 2012-04-10 | Dome, cooling ventilation system and double-fed wind generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN202586575U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104600886B (en) * | 2015-01-27 | 2017-01-25 | 新疆金风科技股份有限公司 | Direct drive permanent magnet wind generator, direct drive permanent magnet wind generator system and stator of direct drive permanent magnet wind generator |
| CN107359727A (en) * | 2017-09-07 | 2017-11-17 | 东方电气集团东方电机有限公司 | A kind of support for being advantageous to motor ventilation and the motor using the support |
| CN107612172A (en) * | 2017-08-21 | 2018-01-19 | 北京金风科创风电设备有限公司 | Machine winding, motor and wind power generating set |
| CN110492632A (en) * | 2019-08-14 | 2019-11-22 | 射阳远景能源科技有限公司 | A kind of air intake vent frame and a kind of generator amature for rotor |
| CN111760201A (en) * | 2020-07-04 | 2020-10-13 | 黄艳民 | Medical spectral therapeutic instrument |
| CN114217226A (en) * | 2021-12-13 | 2022-03-22 | 合肥康尔信电力***有限公司 | Diesel generator static fluid test equipment and method |
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2012
- 2012-04-10 CN CN 201220149703 patent/CN202586575U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600886B (en) * | 2015-01-27 | 2017-01-25 | 新疆金风科技股份有限公司 | Direct drive permanent magnet wind generator, direct drive permanent magnet wind generator system and stator of direct drive permanent magnet wind generator |
| US10291101B2 (en) | 2015-01-27 | 2019-05-14 | Xinjiang Goldwind Science & Technology Co., Ltd. | Permanent-magnet direct-drive wind power generator, system and stator thereof |
| CN107612172A (en) * | 2017-08-21 | 2018-01-19 | 北京金风科创风电设备有限公司 | Machine winding, motor and wind power generating set |
| CN107359727A (en) * | 2017-09-07 | 2017-11-17 | 东方电气集团东方电机有限公司 | A kind of support for being advantageous to motor ventilation and the motor using the support |
| CN110492632A (en) * | 2019-08-14 | 2019-11-22 | 射阳远景能源科技有限公司 | A kind of air intake vent frame and a kind of generator amature for rotor |
| WO2021027442A1 (en) * | 2019-08-14 | 2021-02-18 | 射阳远景能源科技有限公司 | Air inlet frame for rotor, and generator rotor |
| JP2022501999A (en) * | 2019-08-14 | 2022-01-06 | 射陽遠景能源科技有限公司 | Air inlet frame and motor rotor used for the rotor |
| JP7313729B2 (en) | 2019-08-14 | 2023-07-25 | 射陽遠景能源科技有限公司 | generator rotor and wind generator |
| CN111760201A (en) * | 2020-07-04 | 2020-10-13 | 黄艳民 | Medical spectral therapeutic instrument |
| CN111760201B (en) * | 2020-07-04 | 2022-02-15 | 黄艳民 | Medical spectral therapeutic instrument |
| CN114217226A (en) * | 2021-12-13 | 2022-03-22 | 合肥康尔信电力***有限公司 | Diesel generator static fluid test equipment and method |
| CN114217226B (en) * | 2021-12-13 | 2023-12-29 | 合肥康尔信电力***有限公司 | Static fluid test equipment and method for diesel generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20130410 |