CN104009582A - Large-thrust circulating water pump motor ventilation and cooling structure - Google Patents
Large-thrust circulating water pump motor ventilation and cooling structure Download PDFInfo
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- CN104009582A CN104009582A CN201410219712.2A CN201410219712A CN104009582A CN 104009582 A CN104009582 A CN 104009582A CN 201410219712 A CN201410219712 A CN 201410219712A CN 104009582 A CN104009582 A CN 104009582A
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Abstract
The invention relates to a large-thrust circulating water pump motor ventilation and cooling structure which is composed of cooler units, an upper rack, a lower rack, a stator and a rotor. The cooler unit is a main portion for heat exchange of a motor and the outside, the upper rack and the lower rack form a sealing boundary of the ventilation and cooling structure, and the stator and the rotor form a portion for heat exchange of an iron core, a winding, a copper bar and the inside of an end ring. A traditional design concept that coolers are configured on two sides of a circulating water pump motor is changed, a ventilation dead zone is decreased, four coolers are divided into two cooler units, each cooler unit includes two coolers which are parallelly connected, and the cooling effect and reliability are improved. Windows of a rotor supporting air guiding plate and a radiation plate are optimized, the pressure and air volume are increased, and the cooling effect of eight air zones is ensured. The novel large-thrust circulating water pump motor ventilation and cooling structure is provided with eight air zones, adopts four-side heat exchange and meets the requirements of three generations of large-thrust circulating water pump motor ventilation and cooling structures.
Description
Technical field
The present invention relates to a kind of high thrust circulation-water pump electric machine ventilation cooling structure.
Background technology
High thrust circulation-water pump electric machine is the 36 extremely vertical asynchronous machines of 7700kW, and support cylindrical is greater than 5000mm, and the structure that traditional both sides add two coolers cannot meet large capacity heat exchange needs.Need again ventilation cooling structure be changed into the structure that four sides add 4 coolers, and wind path radial direction is set eight heat exchange wind districts in stator, so that appropriate heat exchange efficiency and capacity to be provided.This ventilation cooling structure also needs to reach IP55 sealing grade.
Axially there is wind path dead band in the large-scale Circulating water pump electric machine of tradition, the upper and lower cover plate of its horizontal positioned can produce the phenomenon that prevents wind from passing through, motor is because stator cylindrical is large, iff using traditional both sides to add cooler, will make the vertical direction of cooler produce a large amount of wind paths dead band that approaches 2/3rds, this dead band part cooling air is difficult to enter, and stator core heat dispersion is herein declined, further raise the temperature rise in wind path dead band, the stable operation of motor is impacted.
Summary of the invention
Object of the present invention provides a kind of high thrust circulation-water pump electric machine ventilation cooling structure that improves high thrust Circulating water pump electric machine deficiency in draught, can reduce axial wind path dead band, reduces the phenomenon that prevents wind from passing through, and then reduces windage loss, improves the cooling effect of ventilating.Technical scheme of the present invention is: high thrust circulation-water pump electric machine ventilation cooling structure, cooler package, upper bracket, lower bearing bracket, stator, rotor five parts, consist of, air/water cooler (1) connects and composes cooler package framework with cooler Parallet three-way valve pipe (2); Upper bracket lower ring plate (15) and stud upper strata base plate (16) are tightly, and upper bracket deep bead (11) weld sealing formation upper bracket framework with stud upper strata base plate (16); Stud lower floor base plate (18) and lower bearing bracket upper ring plate (17) are tightly, lower bearing bracket deep bead (12) has welded sealing with lower bearing bracket upper ring plate (17), and sealing plate (19) sealing gasket (20) puts together on lower bearing bracket upper ring plate (17) and forms lower bearing bracket framework; Support is every wind stud (4), triangle wind-guiding stud (5) and support side plate (13) welding, the first wind-guiding round steel (7) diameter is larger, two the second wind-guiding pipes (8) that diameter is less are set in the first wind-guiding round steel (7) both sides, the first wind-guiding round steel (7) and the second wind-guiding pipe (8) are weldingly fixed between stud upper strata base plate (16) and stud lower floor base plate (18), and stretching screw unshakable in one's determination (3), dull and stereotyped wind-guiding stud (6) contact and connect and compose stator backbone with stator core (21); Support wind deflector (10) and be welded to connect into rotor field spider (9) with disc (14), rotor core (22) is enclosed within the upper formation of rotor field spider (9) rotor framework by interference; Upper bracket deep bead (11) with respect to upper bracket lower ring plate (15) with certain angle of inclination, lower bearing bracket deep bead (12) with respect to lower bearing bracket upper ring plate (17) with certain angle of inclination.
The present invention, for reducing ventilation eddy region and draft loss, reduces Circulating water pump electric machine axial height, by general horizontal arranging mode, changes upper bracket deep bead (11), lower bearing bracket deep bead (12) arrangement with certain angle of inclination into.Save the fiberglass arc wind board in common Circulating water pump electric machine, reduced product cost and complexity, facilitated generator unit maintenance.Meanwhile, the ventilating opening on the disc (14) of rotor field spider hub, to desaxe, has further improved the air quantity that rotor supports wind deflector (10) produces.
Stator core both sides air inlet is provided with respectively two air inlets, forms three wind paths:
Cooler of the present invention adopts two parallel connections, forms cooler package, complete machine arranges two cover cooler package altogether, has avoided the inefficiency problem of a set of inlet and outlet pipe for four cooler strings.If a side cooler lost efficacy, can't cause that complete machine cooling system lost efficacy, and had further improved reliability of operation.Each cooler package is that four wind path regions are cooling, the area in the cooling dead band further reducing.
The invention provides a kind of novel ventilated cooling structure of high thrust Circulating water pump electric machine, can guarantee the heat radiation requirement of large scale stator winding iron core, because having used cooler parallel way, the cooling effectiveness of whole unit and reliability are increased substantially, avoided the formation in large area ventilation dead band.The present invention has broken through low thrust Circulating water pump electric machine in the past and has only been provided with the structure of cooler in both sides, and this ventilation cooling structure is applicable to 280T high thrust Circulating water pump electric machine.Opened up large-scale vertical asynchronous machine large scale stator ventilation methods for cooling, the present invention is applicable to the ventilation cooling structure of high thrust asynchronous machine, and especially the ventilation of three generations's nuclear power Circulating water pump electric machine is cooling.
The present invention relates to a kind of novel ventilated cooling structure of high thrust Circulating water pump electric machine, solved the excessive problem in high thrust Circulating water pump electric machine ventilation dead band, reduced motor side bilge vortex region simultaneously, the draft loss of reduction, has simplified stator winding end wind shielding structure; By the cooler package (totally 4 coolers) of 2 groups of parallel connections is set, cooling effect, reliability have been improved.
High thrust Circulating water pump electric machine will consider emphatically to reduce wind path dead zone range, therefore, in the design of motor ventilation structure, need to take measures, and large plenum area is cut into less plenum area, to reduce the scope in ventilation wind path dead band.Be that motor designs four coolers at circumferential wind direction, two original large wind path dead bands are weakened, make motor air channel by original Si Gefeng district, become Ba Gefeng district, after aerated area dwindles, wind path dead band part greatly reduces.Simultaneously at the axial direction of motor, corresponding four air inlets of each cooler, three air outlets; Four air inlets are distributed in motor winding both sides, two of every sides; Three air outlets are distributed in electric machine stator iron core.Through above improvement, the ventilation effect of motor is significantly improved.
Accompanying drawing explanation
Fig. 1 high thrust circulation-water pump electric machine of the present invention ventilation cooling structure figure
Fig. 2 is the A-A cutaway view of Fig. 1
Fig. 3 is the I zoomed-in view of Fig. 2
Embodiment:
Fig. 1 is for being applicable to three generations's nuclear power high thrust circulation-water pump electric machine ventilation cooling structure, by cooler package, upper bracket, lower bearing bracket, stator, rotor five parts, formed, as shown in Figure 1, air/water cooler 1 connects and composes cooler package framework with cooler Parallet three-way valve pipe 2; As shown in Figure 2, upper bracket lower ring plate 15 is with stud upper strata base plate 16 tight, and upper bracket deep bead 11 has welded sealing with stud upper strata base plate 16 and formed upper bracket framework; Stud lower floor base plate 18 is with lower bearing bracket upper ring plate 17 tight, and lower bearing bracket deep bead 12 has welded sealing with lower bearing bracket upper ring plate 17, and sealing plate 19 sealing gaskets 20 put together on lower bearing bracket upper ring plate 17 and form lower bearing bracket framework; Support is every wind stud 4, triangle wind-guiding stud 5 and 13 welding of support side plate, the first wind-guiding round steel 7 diameters are larger, two the second wind-guiding pipes 8 that diameter is less are set in the first wind-guiding round steel 7 both sides, the first wind-guiding round steel 7 and the second wind-guiding pipe 8 are weldingly fixed between stud upper strata base plate 16He stud lower floor base plate 18, and stretching screw 3 unshakable in one's determination, dull and stereotyped wind-guiding stud 6 contact and connect and compose stator backbone with stator core 21; Support wind deflector 10 and be welded to connect into rotor field spider 9 with disc 14, rotor core 22 is enclosed within and on rotor field spider 9, is formed rotor framework by interference; Upper bracket deep bead 11 with respect to upper bracket lower ring plate 15 with certain angle of inclination, lower bearing bracket deep bead 12 with respect to lower bearing bracket upper ring plate 17 with certain angle of inclination.
Stator core 21 both sides air inlets arrange respectively two air inlets, form three wind paths:
As shown in Figure 2, article one, wind path, from entering away from winding overhang air inlet 23, end through rotor disc 14, enter rotor field spider 9, be connected to pressurization enter rotor core ventilation ducts 25 by the support wind deflector 10 rotating, wind path enters stator core ventilation ducts 26 through air gap, wind path, from three stator air outlets 27, is got back to respectively in air/water cooler 1.
Second wind path, from next-door neighbour's winding overhang air inlet 24, enter, stator winding end 28 and short-circuited conducting sleeve 29 are passed through respectively in both sides, wind path enters the end of rotor disc 14, wind path enters rotor field spider 9, by the support wind deflector 10 rotating, is further pressurizeed and enters rotor core ventilation ducts 25, through air gap, enters stator core ventilation ducts 26, wind path, from three stator air outlets 27, is got back to respectively in air/water cooler 1.
Article three, wind path, from stator core 21 both sides air inlets, enter, arrive after stator winding end 28, as shown in Figure 3, wind path part directly enters rotor air gap 30, then passes through stator core ventilation ducts 26, through stator core 21, wind path, from three stator air outlets 27, is got back to respectively in air/water cooler 1.
Cooler package framework is to consist of air/water cooler 1, cooler Parallet three-way valve pipe 2.The heat exchange elements of air/water cooler mainly consists of band copper tube with fins, and operation noise is lower than 85dB, and cooler is provided with temperature measuring equipment, the detecting elements such as hydraulic pressure, water temperature, flow, and cooler is equipped with leakage-proof apparatus and water leakage alarm device.Air/water cooler 1 has completed the configuration of global group by 2 parallel connections of cooler Parallet three-way valve pipe.1 of air/water cooler closes with 13 of support side plates, to reach seal request.
Upper bracket framework is to consist of upper bracket deep bead 11, upper bracket lower ring plate 15, stud upper strata base plate 16.Upper bracket deep bead 11 forms airtight encapsulation boundary with upper bracket lower ring plate 15,16 welding of stud upper strata base plate.
Lower bearing bracket framework is to consist of lower bearing bracket deep bead 12, lower bearing bracket upper ring plate 17, stud lower floor base plate 18, sealing plate 19 and sealing gasket 20.First lower bearing bracket deep bead 12 and lower lower bearing bracket upper ring plate 17 are welded as a whole, then sealing plate 19 and sealing gasket 20 are closed to bolt and lower bearing bracket deep bead 12 tightly by handle, and then the encapsulation boundary of formation lower bearing bracket.
The wind-guiding framework of stator is to consist of every wind stud 4, triangle wind-guiding stud 5, dull and stereotyped wind-guiding stud 6, the first wind-guiding round steel 7, the second wind-guiding pipe 8, stator core 21 support.Support is divided into Ba Gefeng district every wind stud 4 by stationary part, triangle wind-guiding stud 5 can reduce the windage in each wind district, dull and stereotyped wind-guiding stud 6 plays the effect of stator punching excircle orientation and guiding wind path, and the first wind-guiding round steel 7, the second wind-guiding pipe 8 have also played the effect that reduces windage.
The wind-guiding framework of rotor mainly consists of rotor field spider 9, support wind deflector 10, disc 14 and rotor core 22.Rotor core 22 forms one by being full of to be enclosed within on rotor field spider 9, and disc 14 is opened ventilation window from place, axle center, adjusts the distance apart from axle center of this ventilation window, can adjust the overall pressure head of rotor supports wind deflector 10.Rotor core 22 is directly stacked on rotor field spider 9, and cooling air enters rotor core ventilation ducts 25 under the effect of centrifugal head of supporting wind deflector 10, then, by rotor air gap 30, further enters stator core ventilation ducts 26.
Claims (2)
1. a high thrust circulation-water pump electric machine ventilation cooling structure, it is characterized in that: cooler package, upper bracket, lower bearing bracket, stator, rotor five parts, consist of, air/water cooler (1) connects and composes cooler package framework with cooler Parallet three-way valve pipe (2); Upper bracket lower ring plate (15) and stud upper strata base plate (16) are tightly, and upper bracket deep bead (11) weld sealing formation upper bracket framework with stud upper strata base plate (16); Stud lower floor base plate (18) and lower bearing bracket upper ring plate (17) are tightly, lower bearing bracket deep bead (12) has welded sealing with lower bearing bracket upper ring plate (17), and sealing plate (19) sealing gasket (20) puts together on lower bearing bracket upper ring plate (17) and forms lower bearing bracket framework; Support is every wind stud (4), triangle wind-guiding stud (5) and support side plate (13) welding, the first wind-guiding round steel (7) diameter is larger, two the second wind-guiding pipes (8) that diameter is less are set in the first wind-guiding round steel (7) both sides, the first wind-guiding round steel (7) and the second wind-guiding pipe (8) are weldingly fixed between stud upper strata base plate (16) and stud lower floor base plate (18), and dull and stereotyped wind-guiding stud (6) contacts and connects and composes stator backbone with stator core (21); Support wind deflector (10) and be welded to connect into rotor field spider (9) with disc (14), rotor core (22) is enclosed within the upper formation of rotor field spider (9) rotor framework by interference; Upper bracket deep bead (11) with respect to upper bracket lower ring plate (15) with certain angle of inclination, lower bearing bracket deep bead (12) with respect to lower bearing bracket upper ring plate (17) with certain angle of inclination.
2. a kind of high thrust circulation-water pump electric machine ventilation cooling structure according to claim 1, it is characterized in that: article one wind path, from entering away from winding overhang air inlet (23), end through rotor disc (14), enter rotor field spider (9), by the support wind deflector (10) rotating, be connected to pressurization and enter rotor core ventilation ducts (25), wind path enters stator core ventilation ducts (26) through air gap, wind path, from three stator air outlets (27), is got back to respectively in air/water cooler (1); Second wind path, from next-door neighbour's winding overhang air inlet (24), enter, stator winding end (28) and short-circuited conducting sleeve (29) are passed through respectively in both sides, wind path enters the end of rotor disc (14), wind path enters rotor field spider (9), by the support wind deflector (10) rotating, further pressurize and enter rotor core ventilation ducts (25), through air gap, enter stator core ventilation ducts (26), wind path, from three stator air outlets (27), is got back to respectively in air/water cooler (1); Article three, wind path, from stator core (21) both sides air inlet, enter, arrive after stator winding end (28), wind path part directly enters rotor air gap (30), then pass through stator core ventilation ducts (26), through stator core (21), wind path, from three stator air outlets (27), is got back to respectively in air/water cooler (1).
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| CN201410219712.2A CN104009582B (en) | 2014-05-23 | 2014-05-23 | High thrust circulation-water pump electric machine ventilation cooling structure |
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| CN201410219712.2A CN104009582B (en) | 2014-05-23 | 2014-05-23 | High thrust circulation-water pump electric machine ventilation cooling structure |
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| CN104009582B CN104009582B (en) | 2016-03-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108199530A (en) * | 2018-01-11 | 2018-06-22 | 西华大学 | A kind of salient pole synchronous electric machine confluence annular lead wire cooling structure |
| CN108390495A (en) * | 2018-05-14 | 2018-08-10 | 哈尔滨电气动力装备有限公司 | Lean out formula upper spider structure |
| CN108736650A (en) * | 2018-07-12 | 2018-11-02 | 哈尔滨电气动力装备有限公司 | Side water cool ventilation cooling structure for large-scale dc motor |
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| US6396176B1 (en) * | 2000-04-21 | 2002-05-28 | General Electric Company | Electric motor fan seal ring |
| CN201191790Y (en) * | 2008-05-07 | 2009-02-04 | 天津市天发重型水电设备制造有限公司 | Ventilation cooling apparatus for rotor and stator of vertical hydraulic turbogenerator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199530A (en) * | 2018-01-11 | 2018-06-22 | 西华大学 | A kind of salient pole synchronous electric machine confluence annular lead wire cooling structure |
| CN108199530B (en) * | 2018-01-11 | 2023-07-14 | 西华大学 | Annular lead cooling structure of salient pole synchronous motor confluence |
| CN108390495A (en) * | 2018-05-14 | 2018-08-10 | 哈尔滨电气动力装备有限公司 | Lean out formula upper spider structure |
| CN108390495B (en) * | 2018-05-14 | 2023-12-01 | 哈尔滨电气动力装备有限公司 | Projecting type upper rack structure |
| CN108736650A (en) * | 2018-07-12 | 2018-11-02 | 哈尔滨电气动力装备有限公司 | Side water cool ventilation cooling structure for large-scale dc motor |
| CN108736650B (en) * | 2018-07-12 | 2023-12-26 | 哈尔滨电气动力装备有限公司 | Side water-cooling ventilation cooling structure for large direct-current motor |
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