CN103343754A - Centrifugal fan set used for cooling high speed train traction motor - Google Patents
Centrifugal fan set used for cooling high speed train traction motor Download PDFInfo
- Publication number
- CN103343754A CN103343754A CN2013102733197A CN201310273319A CN103343754A CN 103343754 A CN103343754 A CN 103343754A CN 2013102733197 A CN2013102733197 A CN 2013102733197A CN 201310273319 A CN201310273319 A CN 201310273319A CN 103343754 A CN103343754 A CN 103343754A
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- Prior art keywords
- gas
- fan impeller
- draught fan
- motor
- reel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a centrifugal fan set used for cooling a high speed train traction motor. The centrifugal fan set comprises a collector, flanges, a fan impeller, a volute, a shaft disc and an electromotor and is characterized in that the collector is fixed on one side of an end plate of the volute through the flanges, the volute is fixed on the electromotor, the fan impeller which is arranged in the volute is fixed with the shaft disc, an installation hole which is matched with a motor shaft of the electromotor is formed in the shaft disc, and the shaft disc is fixed with the electromotor. According to the centrifugal fan set, on the premise that the appearance size of the product is not changed, the difficult problems that the static pressure is not enough and the weight excesses limitation are solved, the required technical requirement which needs to be met when the high speed train traction motor runs is met, performance and reliability of the traction motor are improved, and the centrifugal fan set has the advantages of being high in efficiency, high in reliability, simple and compact in structure, low in noise and the like.
Description
Technical field
The present invention relates to field of fluid machinery, specifically a kind of centrifugal blower group of EMU traction electric machine cooling usefulness.
Background technique
All carry two traction electric machines respectively on every joint motor-car of every row type EMU, traction electric machine is distributed at the bottom of the motor-car car and the two ends of the interlayer between the passenger carriage floor, and be in the train neutral position, only surplus traction electric machine both sides very narrow space the cooling channel unit is installed.Based on this, for satisfying traction electric machine cooling needs, require supporting ventilation unit must have the characteristics that size is little, draught capacity is strong, static pressure is high.
At present, two ventilation units of traction electric machine of technical requirement on design coupling in the prior art, the rated flow 0.5m under every ventilation unit mark attitude
3/ s, static pressure is not less than 1400Pa, overcoming the traction electric machine resistance, and satisfies traction electric machine cooling needs; In addition, require blower fan sound power level noise not to be higher than 90dB, weight is no more than 50kg.For solving above-mentioned designing requirement, need provide a kind of unit that ventilates to satisfy under the constant prerequisite of boundary dimension, the difficult problem that solution static pressure deficiency, weight transfinite, thereby the Performance And Reliability of raising traction electric machine.
Summary of the invention
According to the technical problem of above-mentioned proposition, and provide a kind of EMU traction electric machine to cool off the centrifugal blower group of usefulness.Be primarily aimed at existing on the low side, the defectives such as boosting capability is not enough, component heaviness of ventilation unit efficiency, and a cover efficient height, reliability height, simple and compact for structure, ventilation unit that noise is low are provided, to satisfy the cooling needs of EMU traction electric machine.
The technological means that the present invention adopts is as follows:
A kind of centrifugal blower group of EMU traction electric machine cooling usefulness comprises slip ring, flange, draught fan impeller, spiral case, reel and motor, and it is characterized in that: described slip ring is fixed on end plate one side of described spiral case by flange; Described spiral case is fixed on the described motor; The described draught fan impeller and the described reel that are arranged in the described spiral case are fixed; Described reel is provided with the mounting hole that the motor shaft with described motor is complementary, and described reel and described motor are fixed.
As preferably, the gas-entered passageway of described slip ring is the convergent-divergent type gas-entered passageway, the gas-entered passageway of described slip ring is by the quick accelerating sections of gas and gas breeze way, the quick accelerating sections of described gas and described gas buffer section constitute circular arc molded lines transition structure, described gas buffer section is connected with the taper shroud arc transition of described draught fan impeller, and the circular arc of the quick accelerating sections of described gas and described gas buffer section is axially than being 1:8-1:5.
The quick accelerating sections of the gas of the gas-entered passageway of above-mentioned slip ring and gas breeze way are made of two sections circular arcs, to substitute traditional tubular, taper, single circular arc and awl arcuate structure.The gas-entered passageway of slip ring adopts circular arc molded lines structure, form the smooth gas-entered passageway of convergent-divergent type, this passage makes air-flow change into gradually from quick acceleration operation and runs slowly, and adjust the air current flow direction, can reduce the eddy current loss that causes because of slip ring discharge area and draught fan impeller inlet face product moment; This circular arc molded lines cooperates with the awl arc shroud wheel cap of draught fan impeller, and transition is connected can to make the convergent-divergent type runner of slip ring form preferably with the expanssion type runner of draught fan impeller, further is limited in the eddy current that draught fan impeller inlet forms, and reduces eddy current loss; Adopt the bigger arc transition of radius that gas flowfield is changed slowly in the outlet side of slip ring, guarantee that the flow field is stable.Adopt the less circular arc of radius to be connected between slip ring gas-entered passageway and the end plate, can eliminate the air inlet local eddy currents that traditional intake method causes on the one hand, reduce and lose; Can under the little situation that takes up room, make air-flow reach identical speed on the other hand, finish the gas collection function of slip ring, and for the gas-entered passageway back segment stays enough spaces, with the stable stability of guaranteeing to enter the gas flowfield of draught fan impeller 3.Two sections circular arcs of the quick accelerating sections of gas and gas breeze way occupy axial space by distributing between 1:8～1:5, and all the other allocation of space schemes also can suitably be selected according to actual conditions, are not limited thereto.
As preferably, be provided with the gap between the gas buffer section of described slip ring and the described draught fan impeller, described gap is the 1%-3% of tail end inlet diameter of the gas buffer section of described slip ring, tail end inlet refers to the minimum inlet diameter place of gas buffer section.
The axial dimension of flange can adopt multiple choices according to actual conditions, and flange structurally mainly works axially departing from that the machining error of the diminished shaft of the cone shape hole that connects transitional function and eliminate reel and motor causes.On pneumatic, the little space of sealing can suppress the outside eddy current that forms of slip ring.The gap that arranges between slip ring and the draught fan impeller, its size are about the 1%-3% of the minimum inlet diameter of slip ring, and some meeting of gas of coming out from draught fan impeller be back to draught fan impeller inside by this gap, and forms a vortex in this front, gap.In addition, reduce the annular diameter of flange, can effectively suppress the development of vortex, reduce loss.
As preferably, described draught fan impeller is made up of awl arc shroud, backward inclined blade and hub disk, and the sheet number of described backward inclined blade is the 7-13 sheet.
Awl arc shroud can slow down the variance ratio of draught fan impeller inner flow passage flow area, and it is more even that Flow area is changed with streamline, can effectively suppress the vortex of draught fan impeller inside, improves fan efficiency.Backward inclined blade blower fan specific diameter to forward direction blade fan efficiency height, usable range is wide.Adopting 7-13 sheet blade mainly is to avoid resonance better, improves the blower fan reliability, as preferably, and the better effects if when adopting 9 blades.
As preferably, described reel is processed with screw thread for the dismounting draught fan impeller near an end of described draught fan impeller; The cone shape hole that mounting hole on the described reel is complementary for the motor shaft with described motor, described reel is fixed on the motor shaft of described motor by bolt and lock washer.
Traditional reel leaves a very thick axle near draught fan impeller one end, is processed with 3 screws in axial end, and middle screw is for fastening draught fan impeller usefulness, and two screws are then used for dismounting draught fan impeller and lock shaft terminal bolt in addition.Reel of the present invention then only need fastening draught fan impeller of processing use screw, can dwindle axle journal greatly, alleviate reel weight.The cone shape hole that is processed with on the reel cooperates (not establishing thrust surface on the motor shaft, fully by the conical surface location) fully with the diminished shaft of motor, this cooperation can be guaranteed draught fan impeller dynamic balancing quality.In addition, the cone shape hole among the present invention and the machining error of diminished shaft are accumulated to axially, finally adjust elimination by the flange of different axial dimensions.Have, draught fan impeller and reel are integrally welded again, adopt welding procedure, eliminate the leakage loss that reel causes on the one hand, improve volumetric efficiency; Can adopt less reel on the other hand, alleviate impeller weight.
As preferably, be provided with 2 stiffening ribs that are used for frequency modulation on the back side panel that described spiral case and described motor are fixed at least.
Owing to limited by installing space, spiral case must design very small and exquisitely, greatly differs from each other with volute of blower size commonly used, has a strong impact on the blower fan overall performance.The outer molded lines of spiral case calculates final definite by three-dimensional flow field, the eddy current that can suppress to greatest extent in the blower fan normal range of operation generates, and improves the blower fan working efficiency.In order to guarantee that cooling channel unit weight meets the requirements, by the three dimensional stress strength check, the front and back side plate of spiral case adopts the steel plate of 3mm to be advisable.It is in order to make blower fan resonant frequency not occur in 0～20Hz and 50Hz ± 5Hz scope that stiffening rib is set.
Compare than prior art, tool efficient height of the present invention, reliability height, simple and compact for structure, advantage such as noise is low are to satisfy the cooling needs of EMU traction electric machine.
The present invention can extensively promote in rail motor set traction electric machine cooling field for the foregoing reasons.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is structural representation of the present invention.
Fig. 2 is rear view of the present invention.
Among the figure: 1, slip ring 2, flange 3, draught fan impeller 4, bolt 5, lock washer 6, spiral case 7, reel 8, motor 9, stiffening rib I 10, stiffening rib II
Embodiment
As Fig. 1, shown in Figure 2, a kind of centrifugal blower group of EMU traction electric machine cooling usefulness comprises slip ring 1, flange 2, draught fan impeller 3, spiral case 6, reel 7 and motor 8.The gas-entered passageway of described slip ring 1 is the convergent-divergent type gas-entered passageway, the gas-entered passageway of described slip ring 1 is by the quick accelerating sections of gas and gas breeze way, the quick accelerating sections of described gas and described gas buffer section constitute circular arc molded lines transition structure, described gas buffer section is connected with the awl arc shroud arc transition of described draught fan impeller 3, and the circular arc of the quick accelerating sections of described gas and described gas buffer section is axially than being 1:8-1:5.Be provided with the gap between the gas buffer section of described slip ring 1 and the described draught fan impeller 3, described gap is the 1%-3% of tail end inlet diameter of the gas buffer section of described slip ring 1.Described draught fan impeller 3 is made up of awl arc shroud, backward inclined blade and hub disk, and the sheet number of described backward inclined blade is the 7-13 sheet.Described reel 7 is processed with for the screw thread of dismantling draught fan impeller near an end of described draught fan impeller 3; The cone shape hole that mounting hole on the described reel 7 is complementary for the motor shaft with described motor 8.
Described slip ring 1 is fixed on end plate one side of described spiral case 6 by flange 2; Described spiral case 6 is by being bolted on the described motor 8; The described draught fan impeller 3 that is arranged in the described spiral case 6 is fixing with described reel 7 welding, forms an integral body; Described reel 7 is fixed on the motor shaft of described motor 8 by bolt 4 and lock washer 5.The back side panel that described spiral case 6 and described motor 8 are fixed is provided with stiffening rib I 9 and the stiffening rib II 10 for frequency modulation.
The above; only be the preferable embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technological scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (6)
1. the centrifugal blower group of EMU traction electric machine cooling usefulness, comprise slip ring (1), flange (2), draught fan impeller (3), spiral case (6), reel (7) and motor (8), it is characterized in that: described slip ring (1) is fixed on end plate one side of described spiral case (6) by flange (2); Described spiral case (6) is fixed on the described motor (8); The described draught fan impeller (3) that is arranged in the described spiral case (6) is fixing with described reel (7); Described reel (7) is provided with the mounting hole that the motor shaft with described motor (8) is complementary, and described reel (7) is fixing with described motor (8).
2. EMU traction electric machine according to claim 1 cools off the centrifugal blower group of usefulness, it is characterized in that: the gas-entered passageway of described slip ring (1) is the convergent-divergent type gas-entered passageway, the gas-entered passageway of described slip ring (1) is by the quick accelerating sections of gas and gas breeze way, the quick accelerating sections of described gas and described gas buffer section constitute circular arc molded lines transition structure, described gas buffer section is connected with the awl arc shroud arc transition of described draught fan impeller (3), and the circular arc of the quick accelerating sections of described gas and described gas buffer section is axially than being 1:8-1:5.
3. EMU traction electric machine according to claim 2 cools off the centrifugal blower group of usefulness, it is characterized in that: be provided with the gap between the gas buffer section of described slip ring (1) and the described draught fan impeller (3), described gap is the 1%-3% of tail end inlet diameter of the gas buffer section of described slip ring (1).
4. EMU traction electric machine according to claim 1 cools off the centrifugal blower group of usefulness, it is characterized in that: described draught fan impeller (3) is made up of awl arc shroud, backward inclined blade and hub disk, and the sheet number of described backward inclined blade is the 7-13 sheet.
5. EMU traction electric machine according to claim 1 cools off the centrifugal blower group of usefulness, it is characterized in that: described reel (7) is processed with for the screw thread of dismantling draught fan impeller near an end of described draught fan impeller (3); The cone shape hole that mounting hole on the described reel (7) is complementary for the motor shaft with described motor (8), described reel (7) is fixed on the motor shaft of described motor (8) by bolt (4) and lock washer (5).
6. the centrifugal blower group of EMU traction electric machine cooling usefulness according to claim 1 is characterized in that: be provided with 2 stiffening ribs that are used for frequency modulation on the back side panel that described spiral case (6) and described motor (8) are fixed at least.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102733197A CN103343754A (en) | 2013-06-28 | 2013-06-28 | Centrifugal fan set used for cooling high speed train traction motor |
| PCT/CN2013/087376 WO2014205984A1 (en) | 2013-06-28 | 2013-11-19 | Centrifugal ventilation unit for cooling traction motor of high-speed electric multiple unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102733197A CN103343754A (en) | 2013-06-28 | 2013-06-28 | Centrifugal fan set used for cooling high speed train traction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103343754A true CN103343754A (en) | 2013-10-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102733197A Pending CN103343754A (en) | 2013-06-28 | 2013-06-28 | Centrifugal fan set used for cooling high speed train traction motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103343754A (en) |
| WO (1) | WO2014205984A1 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014205984A1 (en) * | 2013-06-28 | 2014-12-31 | 中国北车集团大连机车研究所有限公司 | Centrifugal ventilation unit for cooling traction motor of high-speed electric multiple unit |
| CN104500457A (en) * | 2014-12-14 | 2015-04-08 | 惠阳航空螺旋桨有限责任公司 | Installing structure for ventilating duct |
| CN104564832A (en) * | 2015-01-12 | 2015-04-29 | 徐工集团工程机械股份有限公司 | Current collector used on draught fan and draught fan for sweeping car |
| CN104659965A (en) * | 2014-12-12 | 2015-05-27 | 中国北车集团大连机车研究所有限公司 | Cooling ventilation unit for traction motor of motor train unit |
| CN104912844A (en) * | 2015-06-29 | 2015-09-16 | 中冶南方(武汉)威仕工业炉有限公司 | Special cooling blower of integral bell-type furnace |
| CN105065297A (en) * | 2015-06-29 | 2015-11-18 | 中冶南方(武汉)威仕工业炉有限公司 | Special cooling fan for plug-in bell-type furnace |
| EP2993355A1 (en) * | 2014-09-08 | 2016-03-09 | Regal Beloit America, Inc. | An electrical machine and methods of assembling the same |
| US9985494B2 (en) | 2014-09-08 | 2018-05-29 | Regal Beloit America, Inc. | Electrical machine and controller and methods of assembling the same |
| US9982674B2 (en) | 2014-09-08 | 2018-05-29 | Regal Beloit America, Inc. | Electrical machine and methods of assembling the same |
| CN108895012A (en) * | 2018-07-27 | 2018-11-27 | 中车大连机车研究所有限公司 | A kind of EMU traction motor cooling wind unit |
| CN110145495A (en) * | 2019-06-11 | 2019-08-20 | 佛山市晟昊通风机有限公司 | A kind of structure of efficient centrifugal air inlet |
| CN112682331A (en) * | 2020-12-31 | 2021-04-20 | 天信仪表集团有限公司 | Pressure-bearing closed centrifugal fan and flow calibration device |
| CN113279981A (en) * | 2021-05-25 | 2021-08-20 | 包兆平 | Centrifugal fan and machining method thereof |
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| CN203374524U (en) * | 2013-06-28 | 2014-01-01 | 中国北车集团大连机车研究所有限公司 | Centrifuging fan set for high speed EMU traction motor cooling |
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| CN103343754A (en) * | 2013-06-28 | 2013-10-09 | 中国北车集团大连机车研究所有限公司 | Centrifugal fan set used for cooling high speed train traction motor |
-
2013
- 2013-06-28 CN CN2013102733197A patent/CN103343754A/en active Pending
- 2013-11-19 WO PCT/CN2013/087376 patent/WO2014205984A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5820998A (en) * | 1981-07-30 | 1983-02-07 | Shimizu Constr Co Ltd | Roof fan |
| CN2620785Y (en) * | 2003-06-04 | 2004-06-16 | 广东肇庆德通有限公司 | Front multiwing centrifugal ventilator |
| CN201284760Y (en) * | 2008-10-31 | 2009-08-05 | 中国北车集团大连机车研究所有限公司 | Chamber type scroll centrifugal fan used for power dispersion type motor train unit cooling apparatus |
| CN201301833Y (en) * | 2008-11-14 | 2009-09-02 | 株洲联诚集团有限责任公司 | Explosion-proof centrifugal cooling fan for oil-drilling motor |
| CN203374524U (en) * | 2013-06-28 | 2014-01-01 | 中国北车集团大连机车研究所有限公司 | Centrifuging fan set for high speed EMU traction motor cooling |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014205984A1 (en) * | 2013-06-28 | 2014-12-31 | 中国北车集团大连机车研究所有限公司 | Centrifugal ventilation unit for cooling traction motor of high-speed electric multiple unit |
| US10230290B2 (en) | 2014-09-08 | 2019-03-12 | Regal Beloit America, Inc. | Electrical machine and methods of assembling the same |
| US11228231B2 (en) | 2014-09-08 | 2022-01-18 | Regal Beloit America, Inc. | Electrical machine and methods of assembling the same |
| EP2993355A1 (en) * | 2014-09-08 | 2016-03-09 | Regal Beloit America, Inc. | An electrical machine and methods of assembling the same |
| US9985494B2 (en) | 2014-09-08 | 2018-05-29 | Regal Beloit America, Inc. | Electrical machine and controller and methods of assembling the same |
| US9982674B2 (en) | 2014-09-08 | 2018-05-29 | Regal Beloit America, Inc. | Electrical machine and methods of assembling the same |
| EP3502480A1 (en) * | 2014-09-08 | 2019-06-26 | Regal Beloit America, Inc. | Electrical machine and methods of assembling the same |
| CN104659965A (en) * | 2014-12-12 | 2015-05-27 | 中国北车集团大连机车研究所有限公司 | Cooling ventilation unit for traction motor of motor train unit |
| CN104500457A (en) * | 2014-12-14 | 2015-04-08 | 惠阳航空螺旋桨有限责任公司 | Installing structure for ventilating duct |
| CN104564832A (en) * | 2015-01-12 | 2015-04-29 | 徐工集团工程机械股份有限公司 | Current collector used on draught fan and draught fan for sweeping car |
| CN104912844A (en) * | 2015-06-29 | 2015-09-16 | 中冶南方(武汉)威仕工业炉有限公司 | Special cooling blower of integral bell-type furnace |
| CN105065297A (en) * | 2015-06-29 | 2015-11-18 | 中冶南方(武汉)威仕工业炉有限公司 | Special cooling fan for plug-in bell-type furnace |
| CN108895012A (en) * | 2018-07-27 | 2018-11-27 | 中车大连机车研究所有限公司 | A kind of EMU traction motor cooling wind unit |
| CN110145495A (en) * | 2019-06-11 | 2019-08-20 | 佛山市晟昊通风机有限公司 | A kind of structure of efficient centrifugal air inlet |
| CN112682331A (en) * | 2020-12-31 | 2021-04-20 | 天信仪表集团有限公司 | Pressure-bearing closed centrifugal fan and flow calibration device |
| CN113279981A (en) * | 2021-05-25 | 2021-08-20 | 包兆平 | Centrifugal fan and machining method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014205984A1 (en) | 2014-12-31 |
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Application publication date: 20131009 |