CN104009582B - High thrust circulation-water pump electric machine ventilation cooling structure - Google Patents
High thrust circulation-water pump electric machine ventilation cooling structure Download PDFInfo
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- CN104009582B CN104009582B CN201410219712.2A CN201410219712A CN104009582B CN 104009582 B CN104009582 B CN 104009582B CN 201410219712 A CN201410219712 A CN 201410219712A CN 104009582 B CN104009582 B CN 104009582B
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Abstract
The present invention relates to a kind of high thrust circulation-water pump electric machine ventilation cooling structure, be made up of cooler package framework, upper bracket framework, lower bearing bracket framework, stator backbone, rotor skeleton five part.Cooler package framework is motor and outside major part of carrying out heat exchange, and upper bracket framework, lower bearing bracket framework form the encapsulation boundary of ventilation cooling structure, and stator, rotor constitute the part of iron core, winding, copper bar and end ring internal heat exchange.The present invention changes the traditional design thinking of circulation-water pump electric machine both sides configuration cooler, decreases the region in ventilation dead band, by 4 coolers are divided into two cooler package frameworks, often organize two pieces cooler in parallel, improve cooling effect and reliability.Optimize the window of rotor supports wind deflector and rotor disc, improve pressure head and air quantity, ensure the cooling effect in Liao Bagefeng district; Start the novel ventilated cooling structure of high thrust circulation-water pump electric machine Bafeng district, four side heat exchange.The present invention is applicable to the requirement of three generations's nuclear power high thrust circulation-water pump electric machine ventilation cooling structure.
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 pieces cooler cannot meet Large Copacity heat exchange needs.Again ventilation cooling structure need be changed into the structure that four sides add 4 coolers, and wind path radial direction sets eight heat exchange wind districts in stator, to provide appropriate heat exchange efficiency and capacity.This ventilation cooling structure also needs to reach IP55 and seals 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 due to stator cylindrical large, cooler is added iff the traditional both sides of use, the vertical direction of cooler will be made to produce a large amount of wind path dead bands close to 2/3rds, and this dead band part cooling air is difficult to enter, and stator core heat dispersion is herein declined, raise the temperature rise in wind path dead band further, 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 improving 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 effect of ventilating and cooling.Technical scheme of the present invention is: high thrust circulation-water pump electric machine ventilation cooling structure, be made up of cooler package framework, upper bracket framework, lower bearing bracket framework, stator backbone, rotor skeleton five part, air/water cooler (1) and cooler Parallet three-way valve pipe (2) connect and compose cooler package framework; Upper bracket lower ring plate (15) and stud upper strata base plate (16) are tightly, and upper bracket framework has welded hermetically-sealed construction by upper bracket deep bead (11) 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 lower bearing bracket framework is put together on lower bearing bracket upper ring plate (17) by sealing plate (19), sealing gasket (20) and forms; Support welds with support side plate (13) every wind stud (4), triangle wind-guiding stud (5), first wind-guiding round steel (7) diameter is larger than the second wind-guiding pipe (8), two the second wind-guiding pipes (8) are set in the first wind-guiding round steel (7) both sides, 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 stator backbone to be contacted with stator core (21) by stretching screw unshakable in one's determination (3), dull and stereotyped wind-guiding stud (6) and connects and composes; Support wind deflector (10) and be welded to connect into rotor field spider (9) with rotor disc (14), rotor core (22) is enclosed within rotor field spider (9) by interference and forms rotor skeleton; Upper bracket deep bead (11) relative to upper bracket lower ring plate (15) with certain angle of inclination, lower bearing bracket deep bead (12) relative to lower bearing bracket upper ring plate (17) with certain angle of inclination.
The present invention is for reducing ventilation eddy region and draft loss, reduce Circulating water pump electric machine axial height, by upper bracket deep bead (11), lower bearing bracket deep bead (12) by general horizontal arranging mode, change the arrangement with certain angle of inclination into.Eliminate the fiberglass arc wind board in common Circulating water pump electric machine, reduce product cost and complexity, facilitate generator unit to overhaul.Meanwhile, the ventilating opening on the rotor disc (14) of rotor field spider hub offsets to axle center, further increases the air quantity that rotor supports wind deflector (10) produces.
Stator core both sides air inlet is provided with two air inlets respectively, forms three wind paths:
Cooler of the present invention adopts two pieces in parallel, and form cooler package framework, complete machine arranges two cover cooler package frameworks altogether, avoids the inefficiency problem of a set of inlet and outlet pipe of four cooler strings.If side cooler lost efficacy, complete machine cooling system can't be caused to lose efficacy, further increased reliability of operation.Each cooler package framework is four wind path region coolings, the area in the cooling dead band reduced further.
The invention provides a kind of novel ventilated cooling structure of high thrust Circulating water pump electric machine, the cooling requirements of large scale stator winding iron core can be ensured, because employing cooler parallel way, the cooling effectiveness of overall unit and reliability being increased substantially, avoids the formation in large area ventilation dead band.The present invention breaches low thrust Circulating water pump electric machine in the past and is only 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 ventilating and cooling form, the present invention is applicable to the ventilation cooling structure of high thrust asynchronous machine, especially the ventilating and cooling of three generations's nuclear power Circulating water pump electric machine.
The present invention relates to a kind of novel ventilated cooling structure of high thrust Circulating water pump electric machine, solve the problem that high thrust Circulating water pump electric machine ventilation dead band is excessive, decrease motor side bilge vortex region, the draft loss of reduction simultaneously, simplified stator winding end wind shielding structure; By arranging the cooler package framework (totally 4 coolers) of 2 groups of parallel connections, improve cooling effect, reliability.
High thrust Circulating water pump electric machine will be considered emphatically to reduce wind path dead zone range, therefore in the design of motor ventilation structure, needs to take measures, large plenum area is cut into less plenum area, to reduce the scope in ventilation wind path dead band.Namely motor designs four coolers at circumferential wind direction, and original two large wind path dead bands are weakened, and make motor air channel by original four Ge Feng districts, become eight Ge Feng districts, after aerated area reduces, 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, every side; 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 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, be made up of cooler package framework, upper bracket framework, lower bearing bracket framework, stator backbone, rotor skeleton five part, as shown in Figure 1, air/water cooler 1 and cooler Parallet three-way valve pipe 2 connect and compose cooler package framework; As shown in Figure 2, upper bracket lower ring plate 15 and stud upper strata base plate 16 are tight, and upper bracket framework has welded hermetically-sealed construction by upper bracket deep bead 11 with stud upper strata base plate 16; Stud lower floor base plate 18 and lower bearing bracket upper ring plate 17 are tight, and lower bearing bracket deep bead 12 has welded sealing with lower bearing bracket upper ring plate 17, and lower bearing bracket framework is put together on lower bearing bracket upper ring plate 17 by sealing plate 19, sealing gasket 20 and forms; Support welds with support side plate 13 every wind stud 4, triangle wind-guiding stud 5, first wind-guiding round steel 7 diameter is larger than the second wind-guiding pipe 8, in the first wind-guiding round steel 7 both sides, two the second wind-guiding pipes 8 are set, 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 stator backbone to be contacted with stator core 21 by stretching screw 3 unshakable in one's determination, dull and stereotyped wind-guiding stud 6 and connects and composes; Support wind deflector 10 and be welded to connect into rotor field spider 9 with rotor disc 14, rotor core 22 is enclosed within rotor field spider 9 by interference and forms rotor skeleton; Upper bracket deep bead 11 relative to upper bracket lower ring plate 15 with certain angle of inclination, lower bearing bracket deep bead 12 relative to lower bearing bracket upper ring plate 17 with certain angle of inclination.
Stator core 21 both sides air inlet arranges two air inlets respectively, forms three wind paths:
As shown in Figure 2, Article 1, wind path, enter from away from winding overhang air inlet 23, through the end of rotor disc 14, enter rotor field spider 9, be connected to pressurization by the support wind deflector 10 rotated and enter rotor core ventilation ducts 25, wind enters stator core ventilation ducts 26 through rotor air gap, wind, from three stator air outlets 27, is got back in air/water cooler 1 respectively.
Article 2 wind path, enter from next-door neighbour's winding overhang air inlet 24, both sides are respectively through stator winding end 28 and short-circuited conducting sleeve 29, wind enters the end of rotor disc 14, wind enters rotor field spider 9, and being pressurizeed further to wind by the support wind deflector (10) rotated enters rotor core ventilation ducts (25), enters stator core ventilation ducts 26 through rotor air gap, wind, from three stator air outlets 27, is got back in air/water cooler 1 respectively.
Article 3 wind path, enter from stator core 21 both sides air inlet, after arriving stator winding end 28, as shown in Figure 3, wind part directly enters rotor air gap 30, then through stator core ventilation ducts 26, through stator core 21, wind, from three stator air outlets 27, is got back in air/water cooler 1 respectively.
Cooler package framework is made up of air/water cooler 1, cooler Parallet three-way valve pipe 2.The heat exchange elements of air/water cooler is formed primarily of band copper tube with fins, and run noise lower than 85dB, cooler is provided with temperature measuring equipment, and the detecting elements such as hydraulic pressure, water temperature, flow, cooler is equipped with leakage-proof apparatus and water leakage alarm device.Air/water cooler 1 completes the configuration of whole world group by the parallel connection of cooler Parallet three-way valve pipe 2.Air/water cooler 1 and support side plate 13 are closing, to reach seal request.
Upper bracket framework is made up of upper bracket deep bead 11, upper bracket lower ring plate 15, stud upper strata base plate 16.Upper bracket deep bead 11 welds form airtight encapsulation boundary with upper bracket lower ring plate 15, stud upper strata base plate 16.
Lower bearing bracket framework is made up 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 by sealing plate 19 and sealing gasket 20 by closing bolt with lower bearing bracket deep bead 12 tight, and then the encapsulation boundary of formation lower bearing bracket framework.
The wind-guiding framework of stator is made up of every wind stud 4, triangle wind-guiding stud 5, dull and stereotyped wind-guiding stud 6, first wind-guiding round steel 7, second wind-guiding pipe 8, stator core 21 support.Stationary part is divided into eight Ge Feng districts every wind stud 4 by support, triangle wind-guiding stud 5 can reduce the windage in each wind district, dull and stereotyped wind-guiding stud 6 plays stator punching excircle orientation and guides wind action, and the first wind-guiding round steel 7, second wind-guiding pipe 8 also serves the effect reducing windage.
The wind-guiding framework of rotor is formed primarily of rotor field spider 9, support wind deflector 10, rotor disc 14 and rotor core 22.Rotor core 22 forms one by being full of to be enclosed within rotor field spider 9, and rotor disc 14 opens ventilation window from axle center place, adjusts the distance apart from axle center of this ventilation window, can adjust the pressure head that rotor supports wind deflector 10 is overall.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 supporting wind deflector 10, then by rotor air gap 30, enters stator core ventilation ducts 26 further.
Claims (2)
1. a high thrust circulation-water pump electric machine ventilation cooling structure, it is characterized in that: be made up of cooler package framework, upper bracket framework, lower bearing bracket framework, stator backbone, rotor skeleton five part, air/water cooler (1) and cooler Parallet three-way valve pipe (2) connect and compose cooler package framework; Upper bracket lower ring plate (15) and stud upper strata base plate (16) are tightly, and upper bracket framework has welded hermetically-sealed construction by upper bracket deep bead (11) 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 lower bearing bracket framework is put together on lower bearing bracket upper ring plate (17) by sealing plate (19), sealing gasket (20) and forms; Support welds with support side plate (13) every wind stud (4), triangle wind-guiding stud (5), first wind-guiding round steel (7) diameter is larger than the second wind-guiding pipe (8), two the second wind-guiding pipes (8) are set in the first wind-guiding round steel (7) both sides, 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 stator backbone to be contacted with stator core (21) by stretching screw unshakable in one's determination (3), dull and stereotyped wind-guiding stud (6) and connects and composes; Support wind deflector (10) and be welded to connect into rotor field spider (9) with rotor disc (14), rotor core (22) is enclosed within rotor field spider (9) by interference and forms rotor skeleton; Upper bracket deep bead (11) relative to upper bracket lower ring plate (15) with certain angle of inclination, lower bearing bracket deep bead (12) relative 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 1 wind path, wind enters from away from winding overhang air inlet (23), through the end of rotor disc (14), enter rotor field spider (9), pressurizeed by the support wind deflector (10) rotated and enter rotor core ventilation ducts (25), wind enters stator core ventilation ducts (26) through rotor air gap, and wind is got back to air/water cooler (1) from three stator air outlets (27) respectively; Article 2 wind path, wind enters from next-door neighbour's winding overhang air inlet (24), both sides are respectively through stator winding end (28) and short-circuited conducting sleeve (29), wind enters the end of rotor disc (14), wind enters rotor field spider (9), by the support wind deflector (10) rotated wind pressurizeed further and enter rotor core ventilation ducts (25), enter stator core ventilation ducts (26) through rotor air gap, wind is got back to air/water cooler (1) from three stator air outlets (27) respectively; Article 3 wind path, wind enters from stator core (21) both sides air inlet, after arriving stator winding end (28), wind part directly enters rotor air gap (30), then through stator core ventilation ducts (26), through stator core (21), wind is got back to air/water cooler (1) respectively from three stator air outlets (27).
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| Application Number | Priority Date | Filing Date | Title |
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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 true CN104009582B (en) | 2016-03-23 |
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| CN108199530B (en) * | 2018-01-11 | 2023-07-14 | 西华大学 | Annular lead cooling structure of salient pole synchronous motor confluence |
| 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 |
| 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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| 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 |
| CN101272078B (en) * | 2008-05-13 | 2010-11-03 | 湘潭电机股份有限公司 | Protection type brushless excitation synchronous motor |
| CN201789392U (en) * | 2010-08-31 | 2011-04-06 | 西安泰富西玛电机有限公司 | High-voltage bipolar internal feedback adjustable-speed motor |
| CN201813261U (en) * | 2010-09-19 | 2011-04-27 | 三一电气有限责任公司 | Generator and cooling system thereof |
| CN102840085A (en) * | 2012-09-07 | 2012-12-26 | 潮州市汇能电机有限公司 | Shaft extension tubular hydrogenerator |
| CN203850971U (en) * | 2014-05-23 | 2014-09-24 | 哈尔滨电气动力装备有限公司 | Large-thrust circulating water pump motor ventilation cooling structure |
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