CN103595189B - Be laid in the ring-type internal water cooling structure of stator ventilation ducts - Google Patents
Be laid in the ring-type internal water cooling structure of stator ventilation ducts Download PDFInfo
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- CN103595189B CN103595189B CN201310544376.4A CN201310544376A CN103595189B CN 103595189 B CN103595189 B CN 103595189B CN 201310544376 A CN201310544376 A CN 201310544376A CN 103595189 B CN103595189 B CN 103595189B
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Abstract
The present invention relates to a kind of ring-type internal water cooling structure being laid in stator ventilation ducts.It lays ring-type internal water cooling structure in hot blast district stator Radial ventilation duct, cools coolant in ventilation ducts.The interior hollow cavity inside of ring-type internal water cooling structure is full of cooling water, its effect is cooling is entered in stator ventilation ducts coolant by air gap and rotor, to reach the object improving stator winding and stator core cooling effect, the requirement to cooler of electric motor can be reduced simultaneously.Interior hollow cavity arranges cooling water oral siphon and cooling water outlet pipe.During work, first close outlet pipe, water to be cooled opens below outlet pipe again after being full of whole ring-type internal water cooling structure, cooling water circulating device, oral siphon, outlet pipe form cooling water circulation passage, and cooling water circulating device carries out cooling and circulates.This ring-type internal water cooling structure being laid in stator ventilation ducts is particularly suitable for the cooling of the above air-cooling steam-turbo generator of million kilowatt.
Description
Technical field
The invention belongs to technical field of motors, particularly a kind of ring-type internal water cooling structure being laid in large synchronous generator or induction machine stator ventilation ducts.
Background technology
All there is stator radial ducts large synchronous generator more than MW class or its inside of induction machine, by the coolant in radial ducts, rotor-side heat and stator winding and the heat discharged unshakable in one's determination are delivered in air or on cooler, cooler cools it, again coolant is sent back to motor internal carry out motor cooling procedure by fan.But, in large synchronous generator or induction machine, coolant temperature on the one hand owing to having cooled rotor is higher, the heat that stator loss produces simultaneously makes the coolant temperature flowed out from stator Radial ventilation duct again raise, and requires higher to cooler cooling capacity; On the other hand, higher coolant temperature can produce certain impact to stator winding heat dissipation effect.Therefore, an urgent demand cools the coolant entered in stator ventilation ducts, improves stator winding and cooling effect unshakable in one's determination.
Summary of the invention
The object of the invention is to solve the too high problem of existing large synchronous generator or induction machine stator winding and temperature rise unshakable in one's determination, a kind of ring-type internal water cooling structure being laid in stator ventilation ducts is provided, by internal cavity internal water cooling, reduce the temperature entering coolant in stator ventilation ducts, to strengthen the cooling effect of large synchronous generator or induction machine stator.
The technical solution used in the present invention is such:
The present invention is a kind of ring-type internal water cooling structure being laid in stator ventilation ducts be applied on large synchronous generator or induction machine, comprises ring-type internal water cooling structure, oral siphon, outlet pipe and cooling water circulating device; Stator core is divided into cold wind district and hot blast district vertically, and cold wind district and hot blast district are alternately arranged vertically; The coolant flowed out from cooler enters stator Radial ventilation duct through stator yoke back, directly cools stator coil and stator core; The coolant collected by air gap and rotor enters into the Radial ventilation duct in hot blast district, cooling stator coil and stator core; Described ring-type internal water cooling structure is laid in hot blast district stator Radial ventilation duct, cools coolant in ventilation ducts.
Beneficial effect of the present invention is:
This structure solves the higher and coil of stator of motor caused of coolant temperature in large synchronous generator or asynchronous motor stator ventilation ducts and the bad problem of cooling effect unshakable in one's determination, improves cooling effect.For large-scale synchronous turbo generator, the temperature entering into stator hot blast district Radial ventilation duct after coolant cooled rotor can reach 55 DEG C even higher, its cooling effect declines thereupon, the temperature that described ring-type internal water cooling structure effectively can reduce coolant in ventilation ducts is laid at stator hot blast district Radial ventilation duct, and then improve stator coil and cooling effect unshakable in one's determination, former aerial cooler grade can be reduced simultaneously, thus reduce cost.
Accompanying drawing explanation
Fig. 1 is that ring-type internal water cooling structural entity arranges schematic diagram.
Fig. 2 is ring-type internal water cooling structure the first half partial schematic diagram.
Fig. 3 is ring-type internal water cooling structure the latter half partial schematic diagram.
Fig. 4 is ring-type internal water cooling structure front view.
To be that ring-type internal water cooling structure is one-sided lay schematic diagram to Fig. 5.
Fig. 6 is that ring-type internal water cooling structure has protruding turbulence structure schematic diagram.
Mark in figure:
1-stator core; 2-cold wind district; 3-hot blast district; 4-cooling water circulating device; 5-ring-type internal water cooling structure; Hollow cavity in 5-1-; 6-oral siphon; 7-rotor; 8-air gap; 9-outlet pipe; The protruding turbulence structure of 10-; 11-stator coil.
In figure, the direction of arrow is coolant flow direction.
Embodiment
The invention provides a kind of ring-type internal water cooling structure being laid in large synchronous generator or induction machine stator ventilation ducts, below in conjunction with the drawings and specific embodiments, the present invention will be further described.
As shown in figs 1 to 6, the present invention is a kind of ring-type internal water cooling structure being laid in stator ventilation ducts, comprises ring-type internal water cooling structure 5, oral siphon 6, outlet pipe 9 and cooling water circulating device 4.Stator core 1 is divided into multiple cold wind district 2 be alternately arranged vertically and hot blast district 3.Cold wind district 2 coolant flow direction is: the coolant flowed out from cooler enters stator Radial ventilation duct through stator yoke back, and directly cool stator coil 11 and stator core 1, its flow direction is represented by arrow in figure.Hot blast district 3 coolant flow direction is: enter after the secondary groove of rotor and the coolant of air gap 8 that is positioned between stator core 1 and rotor 7 cool rotor coil, then enter stator Radial ventilation duct cooling stator coil 11 and stator core 1.This part coolant temperature when entering hot blast district stator Radial ventilation duct that the coolant that air gap 8 and rotor 7 collect enters into the Radial ventilation duct in hot blast district 3 is higher, can affect the cooling effect of stator coil 11 to hot blast district 3 and stator core 1.The present invention lays ring-type internal water cooling structure 5 in hot blast district 3 stator Radial ventilation duct, cools coolant in ventilation ducts.Described ring-type internal water cooling structure 5 is interior hollow-core construction, and it has interior hollow cavity 5-1.Outside stator core 1, be provided with cooling water circulating device 4, be communicated with by oral siphon 6 between cooling water circulating device 4 with interior hollow cavity 5-1; Set out water pipe 9 at interior hollow cavity 5-1 relative to the opposite side of oral siphon 6, outlet pipe 9 is connected to cooling water circulating device 4.Cooling water circulating device 4, oral siphon 6, interior hollow cavity 5-1, outlet pipe 9 are connected, and constitute cooling water circulation passage.Cooling water circulating device carries out cooling and circulates.
Described coolant comprises air, and hydrogen etc. can be used for the gas as coolant.
Before motor runs, first open oral siphon 6, close outlet pipe 9, after whole interior hollow cavity 5-1 is full of cooling water, then open outlet pipe 9.The outer wall of described ring-type internal water cooling structure 5 is overrided to form by non-magnetic 0.2-0.5mm flake aluminum, can effectively reduce stray field in stator ventilation ducts and to induct in described ring-type internal water cooling structure 5 loss that eddy current causes.Described ring-type internal water cooling structure 5 tip portion cuts into trapezoidal shape, can reduce fluid impedance losses when coolant enters stator ventilation ducts.Described ring-type internal water cooling structure 5 also only can be laid in stator hot blast district 3 ventilation ducts one-sided (as shown in Figure 5), can reduce the quantity of cooling water pipe and interface thereof.The outer wall of described ring-type internal water cooling structure 5 can arrange that protruding turbulence structure 10(as shown in Figure 6), to increase the contact area of coolant and interior hollow cavity 5-1 in stator ventilation ducts, strengthen the cooling effect to coolant in ventilation ducts, the turbulence level of coolant in stator ventilation ducts can be improved simultaneously.
This ring-type internal water cooling structure being laid in stator ventilation ducts is particularly suitable for the cooling of the above air-cooling steam-turbo generator of million kilowatt.
Embodiment 1:
Composition graphs 1 to Fig. 4 illustrates the present embodiment.
Ring-type internal water cooling structure 5 is laid in stator hot blast district 3 ventilation ducts, its outer wall is overrided to form by 0.2-0.5mm flake aluminum, tip portion cuts into trapezoidal shape, inside is hollow cavity 5-1, water pipe 6 is connected into above it, below connects outlet pipe 9, oral siphon 6 is connected with cooling water circulating device 4 with outlet pipe 9, form cooling water circulation passage, before motor runs, first oral siphon 6 is opened, close outlet pipe 9, after water to be cooled is full of whole interior hollow cavity 5-1, open outlet pipe 9 again, recirculated cooling water in interior hollow cavity 5-1 cools the coolant in stator ventilation ducts.
Embodiment 2:
Composition graphs 5 illustrates present embodiment, and the difference of the present embodiment and embodiment 1 is: it is one-sided that described ring-type internal water cooling structure 5 is only laid in stator hot blast district Radial ventilation duct, thus, only has one group of oral siphon 6 and outlet pipe 9 in stator Radial ventilation duct.
Embodiment 3:
Composition graphs 6 illustrates present embodiment, the difference of the present embodiment and embodiment 1 is: the outer wall of described ring-type internal water cooling structure 5 is alternately arranged circular protrusions turbulence structure 10, this structure not only can increase the contact area of coolant and hollow cavity 5-1 inner cooling water in stator ventilation ducts, the turbulence level of coolant in stator ventilation ducts can be strengthened simultaneously, strengthen the ability of its cooling stator coil and iron core.
Claims (6)
1. be laid in a ring-type internal water cooling structure for stator ventilation ducts, it is characterized in that: comprise ring-type internal water cooling structure (5), oral siphon (6), outlet pipe (9) and cooling water circulating device (4); Stator core (1) is divided into cold wind district (2) and hot blast district (3) vertically; Cold wind district (2) and hot blast district (3) are alternately arranged vertically; The coolant flowed out from cooler enters stator Radial ventilation duct through stator yoke back, directly cools stator coil (11) and stator core (1); The coolant collected by air gap (8) and rotor (7) enters into the Radial ventilation duct of hot blast district (3), cooling stator coil (11) and stator core (1); Described ring-type internal water cooling structure (5) is laid in hot blast district stator Radial ventilation duct, cools coolant in ventilation ducts; Described ring-type internal water cooling structure (5) is interior hollow-core construction, and it has interior hollow cavity (5-1); Cooling water circulating device (4) is arranged on stator core (1) outside; Be communicated with by oral siphon (6) between cooling water circulating device (4) with interior hollow cavity (5-1); Set out water pipe (9) at interior hollow cavity (5-1) relative to the opposite side of oral siphon (6), outlet pipe (9) is connected to cooling water circulating device (4); Cooling water circulating device (4), oral siphon (6), interior hollow cavity (5-1), outlet pipe (9) are connected, and constitute cooling water circulation passage.
2. the ring-type internal water cooling structure being laid in stator ventilation ducts according to claim 1, it is characterized in that: described ring-type internal water cooling structure (5) outer wall is overrided to form by non-magnetic 0.2-0.5mm flake aluminum, to reduce in stator ventilation ducts stray field in the described loss being laid in the ring-type internal water cooling structure of stator ventilation ducts eddy current of inducting and causing.
3. the ring-type internal water cooling structure being laid in stator ventilation ducts according to claim 1, it is characterized in that: described ring-type internal water cooling structure (5) tip portion cuts into trapezoidal shape, to reduce fluid impedance losses when coolant enters stator ventilation ducts.
4. the ring-type internal water cooling structure being laid in stator ventilation ducts according to claim 1, it is characterized in that: it is one-sided that described ring-type internal water cooling structure (5) is only laid in stator hot blast district (3) ventilation ducts, to reduce the quantity of cooling water pipe and interface thereof.
5. the ring-type internal water cooling structure being laid in stator ventilation ducts according to claim 1, it is characterized in that: described ring-type internal water cooling structure (5) is upper arranges protruding turbulence structure (10), to increase the contact area of coolant and interior hollow cavity (5-1) in stator ventilation ducts, the turbulence level of coolant in stator ventilation ducts can be improved simultaneously.
6. the ring-type internal water cooling structure being laid in stator ventilation ducts according to claim 1, is characterized in that: described coolant comprises air, hydrogen.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310544376.4A CN103595189B (en) | 2013-11-05 | 2013-11-05 | Be laid in the ring-type internal water cooling structure of stator ventilation ducts |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310544376.4A CN103595189B (en) | 2013-11-05 | 2013-11-05 | Be laid in the ring-type internal water cooling structure of stator ventilation ducts |
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| Publication Number | Publication Date |
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| CN103595189A CN103595189A (en) | 2014-02-19 |
| CN103595189B true CN103595189B (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310544376.4A Active CN103595189B (en) | 2013-11-05 | 2013-11-05 | Be laid in the ring-type internal water cooling structure of stator ventilation ducts |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104901480B (en) * | 2015-06-09 | 2017-09-05 | 哈尔滨理工大学 | With the non salient pole generator around water-cooled stator end core cooling system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3530320A (en) * | 1967-11-22 | 1970-09-22 | Ass Elect Ind | Stator cooling means for dynamo-electric machines |
| CN1405957A (en) * | 2001-08-15 | 2003-03-26 | 通用电气公司 | Back-flowing stator ventilating system for super conductive synchronous machines |
| JP3564915B2 (en) * | 1996-02-14 | 2004-09-15 | 株式会社日立製作所 | Rotating electric machine |
| CN201570947U (en) * | 2009-10-13 | 2010-09-01 | 上海东润换热设备制造有限公司 | Water-cooling base for motor cooling |
| CN201594780U (en) * | 2009-12-30 | 2010-09-29 | 三一电气有限责任公司 | Motor |
| CN102377286A (en) * | 2011-09-29 | 2012-03-14 | 江苏金风风电设备制造有限公司 | Motor and cooling systeem thereof |
| CN102725945A (en) * | 2009-12-17 | 2012-10-10 | Abb有限公司 | Arrangement and method for cooling an electrical machine |
| CN102761201A (en) * | 2011-04-27 | 2012-10-31 | 西门子公司 | Cooling arrangement for electric machine |
-
2013
- 2013-11-05 CN CN201310544376.4A patent/CN103595189B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3530320A (en) * | 1967-11-22 | 1970-09-22 | Ass Elect Ind | Stator cooling means for dynamo-electric machines |
| JP3564915B2 (en) * | 1996-02-14 | 2004-09-15 | 株式会社日立製作所 | Rotating electric machine |
| CN1405957A (en) * | 2001-08-15 | 2003-03-26 | 通用电气公司 | Back-flowing stator ventilating system for super conductive synchronous machines |
| CN201570947U (en) * | 2009-10-13 | 2010-09-01 | 上海东润换热设备制造有限公司 | Water-cooling base for motor cooling |
| CN102725945A (en) * | 2009-12-17 | 2012-10-10 | Abb有限公司 | Arrangement and method for cooling an electrical machine |
| CN201594780U (en) * | 2009-12-30 | 2010-09-29 | 三一电气有限责任公司 | Motor |
| CN102761201A (en) * | 2011-04-27 | 2012-10-31 | 西门子公司 | Cooling arrangement for electric machine |
| CN102377286A (en) * | 2011-09-29 | 2012-03-14 | 江苏金风风电设备制造有限公司 | Motor and cooling systeem thereof |
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| CN103595189A (en) | 2014-02-19 |
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