CN103715803B - A kind of method that in rotor magnetic pole, cold and outer cold subregion cools - Google Patents
A kind of method that in rotor magnetic pole, cold and outer cold subregion cools Download PDFInfo
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- CN103715803B CN103715803B CN201410024279.7A CN201410024279A CN103715803B CN 103715803 B CN103715803 B CN 103715803B CN 201410024279 A CN201410024279 A CN 201410024279A CN 103715803 B CN103715803 B CN 103715803B
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Abstract
The invention discloses a kind of method that in rotor magnetic pole, cold and outer cold subregion cools, the ventilation partitioning device of refrigerating gas on two pole coil air intakes flow in the passage between two pole coils, form outer cold ventilation wind path, and the outside of pole coil is cooled, refrigerating gas flows into pole coil inside through the gap between pole core and pole coil simultaneously, cold ventilation wind path in being formed, and pole coil inside is cooled, flow in the passage between two pole coils from pole coil inside again, the outer cold ventilation wind path flow in passage and interior cold ventilation wind path are spaced from each other by ventilation partitioning device.The present invention is outer cold by carrying out interior cold-peace to pole coil simultaneously, and the ventilation wind path in outer for interior cold-peace cold passage between two pole coils is separated, make the outer cold ventilation wind path of interior cold-peace non-interference, in the passage that the refrigerating gas of interior ventilation can be made successfully to flow between two pole coils, thus improve whole rotor magnetic pole cooling effect.
Description
Technical field
The present invention relates to motor cooling technology field, particularly relate to a kind of method that in rotor magnetic pole, cold and outer cold subregion cools.
Background technology
Salient pole machine capacity per electrode is usually at below 10MVA, and part can reach 15MVA.Along with the change of the market demand and the development of correlation technique, the capacity per electrode of salient pole machine magnetic pole constantly rises, and capacity per electrode is expected to reach 30-40MVA/ pole.Along with the raising of capacity per electrode, the design difficulty of magnetic pole increases.If under the condition of pole coil adopting the identical number of turn and weight, the current density of coil will be more and more higher, pole coil heating will be more and more serious; But, if reduce pole coil current density by the increase pole coil number of turn and weight, then magnetic pole weight can be made significantly to increase, thus the stress of the parts such as magnetic pole, yoke, rotor field spider can be made significantly to increase.The stress of magnetic pole, yoke, rotor field spider is the key factor of restriction rotor Design and manufacture; For high rotating speed unit, its stress is inherently very large, if magnetic pole weight is excessive, then the stress of magnetic pole, yoke, rotor field spider etc. may be made to exceed the allowable stress of most of material, thus significantly increase can manufacture and design difficulty and cost.Therefore, high for capacity per electrode, the particularly high speed unit of capacity per electrode superelevation, need by improving magnetic pole ventilating and cooling effect, to reduce the number of turn and the weight of pole coil, thus reduce the weight of whole pole assemblage, to reach the object reducing magnetic pole, yoke, rotor field spider position stress, manufacture and design difficulty and cost control the most at last in the reasonable scope.
Salient pole synchronous electric machine magnetic pole is made up of pole core, pole end-plate, pole coil, damping winding, magnetic pole pull bar etc., wherein pole coil is used for galvanization, pole coil is placed on outside pole core, and pole coil arranges stacking forming by multilayer current-carrying, has insulating material between current-carrying row.Described current-carrying row also claims bus or busbar, it is a kind of conductor of loaded current, for carrying the exciting current of salient pole synchronous electric machine, after passing to electric current in the current-carrying row that mutual insulating is stacking, be similar to spiral coil, can produce magnetic field, magnetic field then strengthens by pole core, and pole core plays a supportive role to pole coil simultaneously.
The magnetic pole type of cooling of salient pole machine is generally gas cooled.Rotor field spider produces blast head in rotary course, refrigerating gas is blown to magnetic pole interpolar through yoke, refrigerating gas enters in the process of air gap and stator core ventilation ducts flowing through magnetic pole interpolar, the surface that pole coil is in interpolar can be skimmed over, refrigerating gas is in pole coil surface and pole coil generation heat exchange, the heat of pole coil is taken away, thus realizes the cooling to pole coil.This kind of type of cooling, only there is the fraction along magnetic pole current-carrying row thickness direction being in interpolar on the surface that pole coil participates in heat exchange, and cooling effect is undesirable.
Summary of the invention
The present invention is in order to overcome the defect of above-mentioned prior art, a kind of method that in rotor magnetic pole, cold and outer cold subregion cools is provided, the present invention is outer cold by carrying out interior cold-peace to pole coil simultaneously, and the ventilation wind path in outer for interior cold-peace cold passage between two pole coils is separated, make the outer cold ventilation wind path of interior cold-peace non-interference, in the passage that the refrigerating gas of interior ventilation can be made successfully to flow between two pole coils, thus improve whole rotor magnetic pole cooling effect.
The present invention is achieved through the following technical solutions:
A kind of method that in rotor magnetic pole, cold and outer cold subregion cools, it is characterized in that: the ventilation partitioning device of refrigerating gas on two pole coil air intakes flow in the passage between two pole coils, form outer cold ventilation wind path, and the outside of pole coil is cooled, refrigerating gas flows into pole coil inside through the gap between pole core and pole coil simultaneously, cold ventilation wind path in being formed, and pole coil inside is cooled, flow in the passage between two pole coils from pole coil inside again, the outer cold ventilation wind path flow in passage and interior cold ventilation wind path are spaced from each other by ventilation partitioning device.
Described pole coil arranges stacking forming by multilayer current-carrying, current-carrying row has between the flow channels passed through for refrigerating gas or arbitrary neighborhood current-carrying row and is provided with the flow channels passed through for refrigerating gas.
Described ventilation partitioning device at least has a ventilation window.
Described ventilation window is two or more, part between any two adjacent ventilation windows forms the windshied part of ventilation partitioning device, windshied part be positioned at flow channels be in current-carrying row length direction on corresponding position, windshied part is blocked the refrigerating gas entered between two pole coils in passage by ventilation partitioning device.
Described ventilation window is hole or breach.
Described ventilation window is square, trapezoidal, semicircle, kidney-shaped or other arbitrarily can the geometry passed through of supplied gas.
Described windshied part quantity is identical with flow channels quantity.
Beneficial effect of the present invention is mainly manifested in the following aspects:
One, by adopting, " the ventilation partitioning device of refrigerating gas on two pole coil air intakes flow in the passage between two pole coils, form outer cold ventilation wind path, and the outside of pole coil is cooled, refrigerating gas flows into pole coil inside through the gap between pole core and pole coil simultaneously, cold ventilation wind path in being formed, and pole coil inside is cooled, flow in the passage between two pole coils from pole coil inside again, the outer cold ventilation wind path flow in passage and interior cold ventilation wind path are spaced from each other by ventilation partitioning device " such method, refrigerating gas forms two groups of wind paths simultaneously, flow in the passage between two pole coils after interior cold ventilation wind path cools pole coil inside, outer cold ventilation wind path cools the outside of pole coil in directly flowing between two pole coils passage by ventilation partitioning device, outer cold ventilation wind path and the interior cold ventilation wind path partitioning device that ventilated is spaced from each other, ensure outer cold ventilation wind path and interior cold ventilation wind path non-interference, reduce draft loss, reduce draft loss, improve rotor magnetic pole cooling effect, thus improve the efficiency of complete machine.
Two, pole coil arranges stacking forming by multilayer current-carrying, current-carrying row has between the flow channels passed through for refrigerating gas or arbitrary neighborhood current-carrying row and be provided with the flow channels passed through for refrigerating gas, flow channels and gap form the inner passage of pole coil, thus effectively ensure that refrigerating gas is cooled pole coil inside by the inner passage of pole coil smoothly, makes in the smooth and easy passage flow between two pole coils of interior cold ventilation wind path of formation.
Three, ventilation partitioning device at least has a ventilation window, ventilation window can be flow in the passage between two pole coils by ventilation partitioning device smoothly for refrigerating gas, and cools pole coil outside.
Four, ventilation window is two or more, part between any two adjacent ventilation windows forms the windshied part of ventilation partitioning device, windshied part be positioned at flow channels be in current-carrying row length direction on corresponding position, windshied part is blocked the refrigerating gas entered between two pole coils in passage by ventilation partitioning device, due to windshied part be positioned at flow channels be in current-carrying row length direction on corresponding position, can make to flow to outer cold ventilation wind path between two pole coils in passage and simultaneously through the gap between pole coil and pole core through ventilation window, the interior cold ventilation wind path that flow channels on current-carrying row flow between two pole coils in passage is spaced from each other, effectively reduce mutual interference each other, thus improve rotor magnetic pole cooling effect.
Five, ventilation window is hole or breach, can adapt to different use needs, and, manufacturing process can be made simpler, reduce production cost.
Six, the shape of ventilation window preferably square, trapezoidal, semicircle or kidney-shaped or other arbitrarily can the geometry passed through of supplied gas, when ensureing that refrigerating gas passes through smoothly, different application needs can be met.
Seven, windshied part quantity is identical with flow channels quantity, cold ventilation wind path in being formed in the passage between two pole coils and outer cold ventilation wind path can be separated fully further, improves rotor magnetic pole cooling effect.
Accompanying drawing explanation
Description by preferred but non-exclusive embodiment (illustrating via the non-limiting example in accompanying drawing) is become obvious by more multiple features of the present invention and advantage, wherein:
Fig. 1 is cold and outer cold separate ventilation structural representation in the present invention, and the long limit of current-carrying row mutually stacking in figure and narrow limit are respectively Width and the thickness direction of current-carrying row, and vertical paper direction is current-carrying row length direction;
Fig. 2 is cold ventilation wind path structure schematic diagram in the present invention
Fig. 3 be the present invention from Fig. 1 C to seeing the structure of ventilation partitioning device and arranging relative position schematic diagram with current-carrying;
Fig. 4 be the present invention from Fig. 1 C to seeing the structure of embodiment ventilation partitioning device and arranging relative position schematic diagram with current-carrying;
Fig. 5 be the present invention from Fig. 1 C to seeing the structure of embodiment ventilation partitioning device and arranging relative position schematic diagram with current-carrying;
Fig. 6 be the present invention from Fig. 1 C to seeing the structure of embodiment ventilation partitioning device and arranging relative position schematic diagram with current-carrying;
Mark in figure: 1, pole coil, 2, pole core, 3, gap, 4, current-carrying row, 5, flow channels, 6, ventilation partitioning device, 7, ventilation window, 8, windshied part.
Embodiment
Embodiment 1
A kind of method that in rotor magnetic pole, cold and outer cold subregion cools, the ventilation partitioning device 6 of refrigerating gas on two pole coil 1 air intakes flow in the passage between two pole coils 1, form outer cold ventilation wind path, and the outside of pole coil 1 is cooled, refrigerating gas flows into pole coil 1 inside through the gap between pole core 2 and pole coil 1 simultaneously, cold ventilation wind path in being formed, and pole coil 1 inside is cooled, flow in the passage between two pole coils 1 from pole coil 1 inside again, the outer cold ventilation wind path flow in passage and interior cold ventilation wind path are spaced from each other by ventilation partitioning device 6.
The present embodiment is the most basic execution mode, adopt the method, refrigerating gas forms two groups of wind paths simultaneously, flow in the passage between two pole coils 1 after interior cold ventilation wind path cools pole coil 1 inside, outer cold ventilation wind path cools the outside of pole coil 1 in directly flowing between two pole coils 1 passage by ventilation partitioning device 6, outer cold ventilation wind path and the interior cold ventilation wind path partitioning device 6 that ventilated is spaced from each other, ensure outer cold ventilation wind path and interior cold ventilation wind path non-interference, reduce draft loss, reduce draft loss, improve rotor magnetic pole cooling effect, thus improve the efficiency of complete machine.
Embodiment 2
A kind of method that in rotor magnetic pole, cold and outer cold subregion cools, the ventilation partitioning device 6 of refrigerating gas on two pole coil 1 air intakes flow in the passage between two pole coils 1, form outer cold ventilation wind path, and the outside of pole coil 1 is cooled, refrigerating gas flows into pole coil 1 inside through the gap between pole core 2 and pole coil 1 simultaneously, cold ventilation wind path in being formed, and pole coil 1 inside is cooled, flow in the passage between two pole coils 1 from pole coil 1 inside again, the outer cold ventilation wind path flow in passage and interior cold ventilation wind path are spaced from each other by ventilation partitioning device 6.
Described pole coil 1 is arranged 4 by multilayer current-carrying and stackingly to be formed, and current-carrying row 4 has between the flow channels 5 passed through for refrigerating gas or arbitrary neighborhood current-carrying row 4 and is provided with the flow channels 5 passed through for refrigerating gas.
The present embodiment is better embodiment, flow channels 5 and gap 3 form the inner passage of pole coil 1, thus effectively ensure that refrigerating gas is cooled pole coil 1 inside by the inner passage of pole coil 1 smoothly, makes in the smooth and easy passage flow between two pole coils 1 of the interior cold ventilation wind path of formation.
Embodiment 3
A kind of method that in rotor magnetic pole, cold and outer cold subregion cools, the ventilation partitioning device 6 of refrigerating gas on two pole coil 1 air intakes flow in the passage between two pole coils 1, form outer cold ventilation wind path, and the outside of pole coil 1 is cooled, refrigerating gas flows into pole coil 1 inside through the gap between pole core 2 and pole coil 1 simultaneously, cold ventilation wind path in being formed, and pole coil 1 inside is cooled, flow in the passage between two pole coils 1 from pole coil 1 inside again, the outer cold ventilation wind path flow in passage and interior cold ventilation wind path are spaced from each other by ventilation partitioning device 6.
Described pole coil 1 is arranged 4 by multilayer current-carrying and stackingly to be formed, and current-carrying row 4 has between the flow channels 5 passed through for refrigerating gas or arbitrary neighborhood current-carrying row 4 and is provided with the flow channels 5 passed through for refrigerating gas.
Described ventilation window 7 is two or more, part between any two adjacent ventilation windows 7 forms the windshied part 8 of ventilation partitioning device 6, windshied part 8 is positioned at flow channels 5 and is in current-carrying and arranges corresponding position on 4 length directions, and windshied part 8 is to by ventilation partitioning device 6, the refrigerating gas entered between two pole coils 1 in passage blocks.
The present embodiment is another better embodiment, windshied part 8 is positioned at flow channels 5 and is in current-carrying and arranges corresponding position on 4 length directions, can make to flow to outer cold ventilation wind path between two pole coils 1 in passage through ventilation window 7 and to flow between two pole coils 1 cold ventilation wind path in passage through gap 3, flow channels 5 to be simultaneously spaced from each other, effectively reduce mutual interference each other, thus improve rotor magnetic pole cooling effect.
Embodiment 4
A kind of method that in rotor magnetic pole, cold and outer cold subregion cools, the ventilation partitioning device 6 of refrigerating gas on two pole coil 1 air intakes flow in the passage between two pole coils 1, form outer cold ventilation wind path, and the outside of pole coil 1 is cooled, refrigerating gas flows into pole coil 1 inside through the gap between pole core 2 and pole coil 1 simultaneously, cold ventilation wind path in being formed, and pole coil 1 inside is cooled, flow in the passage between two pole coils 1 from pole coil 1 inside again, the outer cold ventilation wind path flow in passage and interior cold ventilation wind path are spaced from each other by ventilation partitioning device 6.
Described pole coil 1 is arranged 4 by multilayer current-carrying and stackingly to be formed, and current-carrying row 4 has between the flow channels 5 passed through for refrigerating gas or arbitrary neighborhood current-carrying row 4 and is provided with the flow channels 5 passed through for refrigerating gas.
Described ventilation window 7 is two or more, part between any two adjacent ventilation windows 7 forms the windshied part 8 of ventilation partitioning device 6, windshied part 8 is positioned at flow channels 5 and is in current-carrying and arranges corresponding position on 4 length directions, and windshied part 8 is to by ventilation partitioning device 6, the refrigerating gas entered between two pole coils 1 in passage blocks.Described ventilation window 7 is hole or breach.
The present embodiment is another better embodiment, and ventilation window 7 is hole or breach, can adapt to different use needs, and, manufacturing process can be made simpler, reduce production cost.
Embodiment 5
A kind of method that in rotor magnetic pole, cold and outer cold subregion cools, the ventilation partitioning device 6 of refrigerating gas on two pole coil 1 air intakes flow in the passage between two pole coils 1, form outer cold ventilation wind path, and the outside of pole coil 1 is cooled, refrigerating gas flows into pole coil 1 inside through the gap between pole core 2 and pole coil 1 simultaneously, cold ventilation wind path in being formed, and pole coil 1 inside is cooled, flow in the passage between two pole coils 1 from pole coil 1 inside again, the outer cold ventilation wind path flow in passage and interior cold ventilation wind path are spaced from each other by ventilation partitioning device 6.
Described pole coil 1 is arranged 4 by multilayer current-carrying and stackingly to be formed, and current-carrying row 4 has between the flow channels 5 passed through for refrigerating gas or arbitrary neighborhood current-carrying row 4 and is provided with the flow channels 5 passed through for refrigerating gas.
Described ventilation window 7 is two or more, part between any two adjacent ventilation windows 7 forms the windshied part 8 of ventilation partitioning device 6, windshied part 8 is positioned at flow channels 5 and is in current-carrying and arranges corresponding position on 4 length directions, and windshied part 8 is to by ventilation partitioning device 6, the refrigerating gas entered between two pole coils 1 in passage blocks.Described ventilation window 7 is breach.
Described ventilation window 7 is square, trapezoidal, semicircle, kidney-shaped or other arbitrarily can the geometry passed through of supplied gas.
The present embodiment is another better embodiment, shape preferably square, trapezoidal, the semicircle or kidney-shaped of ventilation window 7, when ensureing that refrigerating gas passes through smoothly, can meet different application needs.
Embodiment 6
A kind of method that in rotor magnetic pole, cold and outer cold subregion cools, the ventilation partitioning device 6 of refrigerating gas on two pole coil 1 air intakes flow in the passage between two pole coils 1, form outer cold ventilation wind path, and the outside of pole coil 1 is cooled, refrigerating gas flows into pole coil 1 inside through the gap between pole core 2 and pole coil 1 simultaneously, cold ventilation wind path in being formed, and pole coil 1 inside is cooled, flow in the passage between two pole coils 1 from pole coil 1 inside again, the outer cold ventilation wind path flow in passage and interior cold ventilation wind path are spaced from each other by ventilation partitioning device 6.
Described pole coil 1 is arranged 4 by multilayer current-carrying and stackingly to be formed, and current-carrying row 4 has between the flow channels 5 passed through for refrigerating gas or arbitrary neighborhood current-carrying row 4 and is provided with the flow channels 5 passed through for refrigerating gas.
Described ventilation window 7 is two or more, part between any two adjacent ventilation windows 7 forms the windshied part 8 of ventilation partitioning device 6, windshied part 8 is positioned at flow channels 5 and is in current-carrying and arranges corresponding position on 4 length directions, and windshied part 8 is to by ventilation partitioning device 6, the refrigerating gas entered between two pole coils 1 in passage blocks.Described ventilation window 7 is breach.
Described ventilation window 7 is square, trapezoidal, semicircle, kidney-shaped or other arbitrarily can the geometry passed through of supplied gas.
Described windshied part 8 quantity is identical with flow channels 5 quantity.
The present embodiment is preferred forms, and windshied part 8 quantity is identical with flow channels 5 quantity, cold ventilation wind path in being formed in the passage between two pole coils 1 and outer cold ventilation wind path can be separated fully further, improves rotor magnetic pole cooling effect.
The invention is not restricted to above-described embodiment; according to the description of above-described embodiment; those of ordinary skill in the art also can make some apparent changes to the present invention; as ventilation window 7 being arranged to the shape that other can pass through for refrigerating gas arbitrarily, but these changes all should fall within the protection range of the claims in the present invention.
Claims (4)
1. the method that in a rotor magnetic pole, cold and outer cold subregion cools, it is characterized in that: the ventilation partitioning device (6) of refrigerating gas on two pole coils (1) air intake flow in the passage between two pole coils (1), form outer cold ventilation wind path, and the outside of pole coil (1) is cooled, refrigerating gas flows into pole coil (1) inside through the gap (3) between pole core (2) and pole coil (1) simultaneously, cold ventilation wind path in being formed, and pole coil (1) inside is cooled, flow in the passage between two pole coils (1) from pole coil (1) inside again, the outer cold ventilation wind path flow in passage and interior cold ventilation wind path are spaced from each other by ventilation partitioning device (6), described pole coil (1) is arranged by multilayer current-carrying that (4) are stacking forms, and is provided with the flow channels (5) passed through for refrigerating gas between arbitrary neighborhood current-carrying row (4),
Described ventilation partitioning device (6) has ventilation window (7),
Described ventilation window (7) is for two or more, part between any two adjacent ventilation windows (7) forms the windshied part (8) of ventilation partitioning device (6), and windshied part (8) is positioned at flow channels (5) and is in corresponding position on current-carrying row (4) length direction.
2. the method that in a kind of rotor magnetic pole according to claim 1, cold and outer cold subregion cools, is characterized in that: described ventilation window (7) is breach.
3. the method that in a kind of rotor magnetic pole according to claim 2, cold and outer cold subregion cools, is characterized in that: described ventilation window (7) is square, trapezoidal, semicircle, kidney-shaped or other arbitrarily can the geometry passed through of supplied gas.
4. the method that in a kind of rotor magnetic pole according to claim 1, cold and outer cold subregion cools, is characterized in that: described windshied part (8) quantity is identical with flow channels (5) quantity.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410024279.7A CN103715803B (en) | 2014-01-20 | 2014-01-20 | A kind of method that in rotor magnetic pole, cold and outer cold subregion cools |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410024279.7A CN103715803B (en) | 2014-01-20 | 2014-01-20 | A kind of method that in rotor magnetic pole, cold and outer cold subregion cools |
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| CN103715803A CN103715803A (en) | 2014-04-09 |
| CN103715803B true CN103715803B (en) | 2015-11-25 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108258824B (en) * | 2016-12-29 | 2020-02-14 | 东方电气集团东方电机有限公司 | Internal cooling and external cooling combined cooling method for rotor magnetic pole winding |
| CN114421679B (en) * | 2022-01-17 | 2023-12-29 | 东方电气集团东方电机有限公司 | Cooling structure of salient pole synchronous motor magnetic pole winding |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5941136A (en) * | 1982-08-30 | 1984-03-07 | Mitsubishi Electric Corp | Rotor for rotary electric machine |
| CN101409475A (en) * | 2007-09-03 | 2009-04-15 | 株式会社日立制作所 | Rotating electric machine |
| CN202856493U (en) * | 2012-06-04 | 2013-04-03 | 杭州力源发电设备有限公司 | Hydro-generator rotor pole air deflector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2931316B1 (en) * | 2008-05-19 | 2012-06-01 | Jeumont Electric | ROTOR OF A MULTIPOLAR SYNCHRONOUS ELECTRIC MACHINE WITH HIGHLIGHTS |
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2014
- 2014-01-20 CN CN201410024279.7A patent/CN103715803B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5941136A (en) * | 1982-08-30 | 1984-03-07 | Mitsubishi Electric Corp | Rotor for rotary electric machine |
| CN101409475A (en) * | 2007-09-03 | 2009-04-15 | 株式会社日立制作所 | Rotating electric machine |
| CN202856493U (en) * | 2012-06-04 | 2013-04-03 | 杭州力源发电设备有限公司 | Hydro-generator rotor pole air deflector |
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Owner name: STATE GRID XINYUAN CO., LTD. Free format text: FORMER OWNER: DONGFANG ELECTRIC GROUP DONGFANG MOTOR CO., LTD. Effective date: 20150311 Owner name: DONGFANG ELECTRIC GROUP DONGFANG MOTOR CO., LTD. Effective date: 20150311 |
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Effective date of registration: 20150311 Address after: 100761 Beijing Xuanwu District city two, Baiguang Road Applicant after: State Grid Xinyuan Co., Ltd. Applicant after: Dongfang Electric Group Dongfang Motor Co., Ltd. Address before: 618000 the Yellow River West Road Deyang city Sichuan province Jingyang District No. 188 Applicant before: Dongfang Electric Group Dongfang Motor Co., Ltd. |
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