CN207150378U - A kind of axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive with combination cooling structure - Google Patents
A kind of axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive with combination cooling structure Download PDFInfo
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- CN207150378U CN207150378U CN201720877469.2U CN201720877469U CN207150378U CN 207150378 U CN207150378 U CN 207150378U CN 201720877469 U CN201720877469 U CN 201720877469U CN 207150378 U CN207150378 U CN 207150378U
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- 238000001816 cooling Methods 0.000 title claims abstract description 140
- 230000003137 locomotive Effects 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 87
- 239000000498 cooling water Substances 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 17
- 230000035699 permeability Effects 0.000 claims description 17
- 241000883990 Flabellum Species 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 16
- 239000000696 magnetic material Substances 0.000 claims description 15
- 102000010637 Aquaporins Human genes 0.000 claims description 5
- 108010063290 Aquaporins Proteins 0.000 claims description 5
- 230000005284 excitation Effects 0.000 claims description 5
- 230000001681 protective Effects 0.000 claims description 5
- 239000000654 additive Substances 0.000 claims description 4
- 230000000996 additive Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 4
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims 2
- 230000000295 complement Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 210000000515 Tooth Anatomy 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 210000000614 Ribs Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001075561 Fioria Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000000452 restraining Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model provides a kind of axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive with combination cooling structure, is related to technical field of motors.The motor is provided with air-cooled and water-cooling structure on the basis of double groups of 6/4 pole switching reluctance motor structures, including casing, drive end bearing bracket, rear end cap, rotor and stator, the inter-tooth slots of stator and rotor form cooling air channel, end cap is provided with vent, cooling wind air inlet, the water inlet tube opening and water outlet tube opening, circumferential annular air-guiding aisle of cooling water are set on casing, track ring back of the yoke portion sets spiral water pipe, and two ends of rotor sets self-cooled fan.The cooling structure that the utility model is combined by air-cooled rotor and water-cooled stator, water cooling is opposite with air-cooled action direction, cooled region is complementary, effectively make the reduction of electric machine rotor temperature, the problem of avoiding motor radiating difficulty under high-speed working condition, so as to ensure the stable operation of motor long-term safety, effectively extend the service life of motor.
Description
Technical field
It the utility model is related to technical field of motors, more particularly to a kind of axial permanent magnetic auxiliary with combination cooling structure
Radial direction magnetic resistance high-speed electric expreess locomotive.
Background technology
At present, novel high speed motor has turned into an important development direction of energy-saving efficient motor.Existing high-speed electric expreess locomotive by
Limited in its cooling structure, using fan coolling mode is carried, (rotating shaft drives fan to cool down wind to casing and end cap appearance
The radiating ribs in face, then the heat of motor internal can be taken away by radiating ribs), but such a type of cooling can not produce motor internal
Heat fully take away, thus cause high-speed electric expreess locomotive poor cooling performance, restricted application.And high-speed electric expreess locomotive rotating fluid field point
Cloth is complex, and rotor and stator temperature rise problem, which turn into, directly affects the restraining factors that can motor run steadily in the long term.
Utility model content
The technical problems to be solved in the utility model is to be directed to above-mentioned the deficiencies in the prior art, there is provided one kind has mixing cold
But the axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive of structure, can reduce armature supply under certain condition, to improve motor
Operational efficiency, improve its performance indications.The cooling structure being combined simultaneously by air-cooled rotor and water-cooled stator, effectively makes motor
Rotor temperature reduces, the problem of avoiding motor radiating difficulty under high-speed working condition, so as to ensure the stable fortune of motor long-term safety
OK, the service life of motor is effectively extended.
In order to solve the above technical problems, technical solution adopted in the utility model is：One kind has combination cooling structure
Axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive, including casing, drive end bearing bracket, rear end cap, rotor and stator；
Stator organizes salient pole stators, including front end stator core and its winding, rear end stator core and its winding to be double；Front end
Stator core is fixed on the casing inner wall of drive end bearing bracket side, and rear end stator core is fixed in the casing of rear end cap side
On wall, 6 salient poles are uniformly distributed on the stator core of both ends, stator winding is concentrated and is wound on stator core；Adjacent stator core
Stator slot between salient pole is the air-cooled area of stator as stator shaft orientation cooling air channel；It is fixed to be provided between stator yoke back and casing
The spiral water-cooling channel in subring back of the yoke portion, as stator water-cooling area, the spiral water-cooling channel in track ring back of the yoke portion is surrounded on stator
The back of the yoke portion of iron core, and it is close to or is embedded in the back of the yoke portion of stator core；The air-cooled direction of stator and stator water-cooling direction are orthogonal；
Rotor is composite construction, on the inside of the stator, including rotating shaft, permeability magnetic material, permanent magnet, permanent magnet protective case and double
Group rotor iron core；Rotating shaft is coaxially disposed with casing, and permeability magnetic material is wrapped in rotating shaft lateral surface；Permanent magnet is axially sleeved permanent magnetism
Body, embedded permeability magnetic material center, for additive excitation, is cased with permanent magnet protective case outside permanent magnet；Double group rotor iron cores are with turning
Axle coaxial rotating, including front end rotor core and rear end rotor core, fixing assembling is in the outer of permeability magnetic material rear and front end respectively
Side, and be arranged concentrically respectively with front end stator core and rear end stator core, air gap is provided between stator and rotor iron core；Both ends
4 salient poles are uniformly distributed on rotor core；It is fixed with behind the rotor core of rear end before the rotor core of front end and respectively
Flabellum after flabellum and rotor self-cooled fan before rotor self-cooled fan；Rotor slot between adjacent rotor iron core salient pole, which is used as, to be turned
The axial cooling air channel of son；
The first cooling chamber, double groups of rotor outer end walls and front and rear cover inner end wall are formed between the inner end wall of double groups of rotors
Between form the second cooling chamber and the 3rd cooling chamber, between rotor air gap and rotor axial direction cooling air channel by the first cooling chamber with
Second cooling chamber, the connection of the 3rd cooling chamber；
The casing uses permeability magnetic material, and air inlet, water inlet tube opening and water outlet tube opening are offered among casing；Casing
Inwall center is connected with the circumferential annular air-guiding aisle communicated with air inlet, the axial two sides of circumferential annular air-guiding aisle
On be equidistantly provided with the Cooling Holes of some protrusions, Cooling Holes connect circumferential annular air-guiding aisle with the first cooling chamber；Casing
Water inlet tube opening that centre opens up, water outlet tube opening the water inlet of the spiral water-cooling channel in connecting stator ring back of the yoke portion and go out respectively
The mouth of a river；
Be equipped with some vents on the drive end bearing bracket and rear end cap, vent by the second cooling chamber, the 3rd cooling chamber with
Extraneous air is connected.
Further, the spiral water-cooling channel in track ring back of the yoke portion is spiral water pipe, by one whole water pipe
It surround and forms along stator yoke back, the water inlet pipe open communication on the water inlet and casing of spiral water pipe, spiral water channel
Outlet pipe open communication on the delivery port and casing of pipe；Spacing around the adjacent water pipe at stator yoke back is identical.
Further, the spiral water pipe in track ring back of the yoke portion is high by thermal conductivity and material that magnetic conductivity is low makes and
Into；The duct width of spiral water pipe is 6mm, duct height 4mm, and the adjacent water channel tube pitch around stator yoke back is
5~7mm, the cooling water that flow velocity is 1.5m/s is connected with inside spiral water pipe.
Further, water inlet tube opening is arranged on the top among casing, and water outlet tube opening is arranged on the bottom among casing
Portion；The circular direction of spiral water pipe is to lead to from water inlet tube opening via the axial water pipe for being close to internal side of shell top
Organized close to the side of end cap after flowing through spiral water pipe to double in stator core back of the yoke lower ends double groups of stator core back of the yoke upper ends
Side, then it is pooled to by internal side of shell bottom axial direction water pipe the water outlet tube opening of casing central bottom.
Further, the Cooling Holes the number of openings of the casing inner wall circumference annular air-guiding aisle and drive end bearing bracket, rear end
The total quantity that lid opens up vent is identical, and Cooling Holes are dimensioned slightly smaller than vent.
Further, the vent on drive end bearing bracket and rear end cap extends simultaneously into the second cooling chamber and the 3rd cooling chamber respectively
Be connected with the exhaust duct of one section of opening upwards, make vent connected with exhaust duct after be shaped as laterally disposed L-type.
Further, half of the blade radius of the preceding flabellum of rotor self-cooled fan and rear flabellum higher than rotor iron core salient pole
Footpath, and less than the radius of stator core back of the yoke.
Further, stator core is formed using silicon steel plate stacking.
It is using beneficial effect caused by above-mentioned technical proposal：One kind provided by the utility model has combination cooling
The axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive of structure, using permanent magnet additive excitation structure, permanent magnet excitation in magnetic circuit
The addition of effect reduces Stator energization current consumption indirectly, effectively reduces the copper loss of stator winding；Casing inner wall circumference annular
Air-guiding aisle is provided with cooling, and but for wind into the equidistant Cooling Holes of the first cooling chamber, it is simultaneously axially uniform that cooling wind enters air-guiding aisle
Cooling wind is provided for double groups of rotors, electric machine rotor radiates evenly；The air intake entered for cooling air is provided among casing
Mouthful, enter the first cooling chamber by Cooling Holes；Cooling wind flows into both sides rotor air gap and cooling wind through the first cooling chamber simultaneously
Road, cool down outside double group rotors, stator teeth and air gap；The air that motor is heated after rotating is again by rotor self-cooled fan
Blade drives, and is finally discharged by the vent on front and rear cover, while taking into account double group rotor radiatings and makes motor internal hot
Amount is more fully discharged.
Air-cooled structure is air intake among motor used by the utility model, both ends air-out, is spread from centre to both sides
Radiating mode, and water-cooling structure is then to enter coolant close to the both ends water channel water inlet of end cap by stator, passes through spiral water
Deferent side direction into double groups of stators cools down stator yoke, is finally pooled to bottom of shell centre position, i.e., from both ends to centre
The radiating mode of diffusion.It is air-cooled to cool down motor internal and outside from opposite direction respectively with water cooling, effectively enhance motor and turn surely
The maximum temperature of the heat-sinking capability of son, stator region and rotor region significantly reduces, and can guarantee that motor long-term safety stabilization
Operation, effectively extend the service life of motor.
Brief description of the drawings
Fig. 1 is that the axial permanent magnetic with combination cooling structure that the utility model embodiment provides aids in radial direction magnetic resistance at a high speed
Motor axial slices structural representation；
Fig. 2 is the front end rotor end structure illustration that utility model embodiment provides；
Fig. 3 is the motor section structural representation for the casing internal that the utility model embodiment provides；
Fig. 4 is the structural representation of the spiral water pipe at the stator yoke back that the utility model embodiment provides；
Fig. 5 is the structural representation of the preceding flabellum of rotor self-cooled fan that the utility model embodiment provides or rear flabellum；
Fig. 6 is the structural representation of the drive end bearing bracket that the utility model embodiment provides and its vent；
Fig. 7 is the structural representation of circumferential annular air-guiding aisle and its Cooling Holes that the utility model embodiment provides；
Fig. 8 is that the axial permanent magnetic with combination cooling structure that the utility model embodiment provides aids in radial direction magnetic resistance at a high speed
The magnetic circuit of motor moves towards schematic diagram.
In figure：1st, casing；2nd, drive end bearing bracket；3rd, rear end cap；4th, front end stator core；5th, front end stator winding；6th, rear end is fixed
Sub- iron core；7th, rear end stator winding；8th, stator shaft orientation cooling air channel；9th, spiral water pipe；10th, rotating shaft；11st, permeability magnetic material；
12nd, permanent magnet；13rd, permanent magnet protective case；14th, front end rotor core；15th, rear end rotor core；16th, preceding flabellum；17th, rear fan
Leaf；18th, rotor axial cooling air channel；19th, the first cooling chamber；20th, the second cooling chamber；21st, the 3rd cooling chamber；22nd, drive end bearing bracket is arranged
Air holes；23rd, rear end cap vent；24th, wind air inlet is cooled down；25th, water inlet tube opening；26th, water outlet tube opening；27th, circumferential annulus
Shape air-guiding aisle；28th, Cooling Holes.
Embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but is not limited to the scope of the utility model.
A kind of axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive with combination cooling structure, as shown in figure 1, including casing
1st, drive end bearing bracket 2, rear end cap 3, stator and rotor.The basic structure of the motor organizes 6/4 pole switching reluctance motor structure, motor to be double
Structure on two sides is arranged in parallel and full symmetric in uniform on the intermediate vertical face of machine shaft, every side stator core (except rotor)
6 salient poles are distributed, 4 salient poles are uniformly distributed on the rotor core of every side, are double group salient-pole structures, as shown in Figures 2 and 3.
Stator organizes salient pole stators, including front end stator core 4 and its winding 5, rear end stator core 6 and its winding 7 to be double.
Stator core is formed using silicon steel plate stacking.Front end stator core 4 is fixed on the inwall of casing 1 of the side of drive end bearing bracket 2, rear end
Stator core 6 is fixed on the inwall of casing 1 of the side of rear end cap 3, and stator winding is concentrated and is wound on stator core.It is adjacent fixed
Stator slot between sub- iron core salient pole is the air-cooled area of stator as stator shaft orientation cooling air channel 8.Stator yoke back and casing 1 it
Between be provided with the spiral water-cooling channel in track ring back of the yoke portion, as stator water-cooling area, effectively take away the heat of stator.The air-cooled side of stator
To orthogonal with stator water-cooling direction.The spiral water-cooling channel in track ring back of the yoke portion is spiral water pipe 9, by one whole water
Deferent forms along stator yoke back is circular, and is close to or is embedded in the back of the yoke portion of stator core, as shown in Figure 4.Track ring back of the yoke portion
Spiral water-cooling channel, i.e., spiral water pipe, by thermal conductivity height, the low material of magnetic conductivity is made, spiral water pipe
9 duct width is 6mm, duct height 4mm, and the adjacent water channel tube pitch around stator yoke back is 5~7mm, spirally
The cooling water that flow velocity is 1.5m/s is connected with inside water pipe 9.
Rotor is composite construction, on the inside of stator, including rotating shaft 10, permeability magnetic material 11, permanent magnet 12, permanent magnet protection
Set 13 and double group rotor iron cores.Rotating shaft 10 is coaxially disposed with casing 1, and permeability magnetic material 11 is wrapped in the lateral surface of rotating shaft 10.Permanent magnet
12 be axially sleeved permanent magnet, the embedded center of permeability magnetic material 11, for additive excitation, permanent magnet guarantor is cased with outside permanent magnet 12
Sheath 13.Double group rotor iron cores and the coaxial rotating of rotating shaft 10, including front end rotor core 14 and rear end rotor core 15, it is solid respectively
Surely be assemblied in the lateral surface of the rear and front end of permeability magnetic material 11, and respectively with front end stator core 4 and rear end stator core 6 is concentric sets
Put, and air gap is provided between stator and rotor iron core.Consolidate respectively before front end rotor core 14 and behind rear end rotor core 15
Surely provided with flabellum 17 after flabellum 16 before rotor self-cooled fan and rotor self-cooled fan, blade structure is as shown in Figure 5.Rotor is certainly
The blade radius of the preceding flabellum 16 of cold type fan and rear flabellum 17 is higher than the radius of rotor iron core salient pole, and is less than stator core back of the yoke
Radius.Rotor slot between adjacent rotor iron core salient pole is as rotor axial cooling air channel 18.
The first cooling chamber 19 is formed between the inner end wall of double groups of rotors, double groups of rotor outer end walls are inner with front and rear cover
Form the second cooling chamber 20 and the 3rd cooling chamber 21 between wall, air gap and rotor axial direction cooling air channel 8 and 18 will between rotor
First cooling chamber 19 connects with the second cooling chamber 20, the 3rd cooling chamber 21.Some air drafts are equipped with drive end bearing bracket 2 and rear end cap 3
Hole 22 and 23, the structural representation of drive end bearing bracket 2 and its vent 22 is illustrated in figure 6, the structure of rear end cap 3 is identical, vent
22 and 23 are respectively connected the second cooling chamber 20, the 3rd cooling chamber 21 with extraneous air.Air draft on drive end bearing bracket and rear end cap
Hole extends into the second cooling chamber and the 3rd cooling chamber and is connected with the exhaust duct of one section of opening upwards respectively, makes vent and row
Laterally disposed L-type is shaped as after airduct connection, can effectively prevent the debris such as dust, handstone from entering motor machine from vent
Influence motor inside shell and far turn.
Casing 1 uses permeability magnetic material, and air inlet 24, water inlet tube opening 25 and water outlet tube opening 26 are offered among casing 1,
Water inlet tube opening 25 is arranged on the top among casing 1, and water outlet tube opening 26 is arranged on the bottom among casing 1.The inwall of casing 1
Center is connected with the circumferential annular air-guiding aisle 27 communicated with air inlet 24, and its structure is as shown in fig. 7, circumferential annular wind-guiding
The Cooling Holes 28 of some protrusions are equidistantly provided with the axial two sides of passage 27, respectively double groups of rotors are provided with cooling wind,
Its number of openings is identical with the total quantity that vent 22 and 23 is opened up on drive end bearing bracket 2, rear end cap 3, is dimensioned slightly smaller than vent, is
Prevent that cool down wind produces larger windage in motor internal, avoid cooling down wind congestion in motor, influence motor operation performance.It is cold
But hole 28 connects circumferential annular air-guiding aisle 27 with the first cooling chamber 19, uniform in order to be more beneficial for rotor radiating.Machine
The water inlet tube opening 25, the water outlet tube opening 26 that are opened up among shell 1 connect the water inlet and delivery port of spiral water pipe 9 respectively,
The water inlet of spiral water pipe 9 connects with water inlet tube opening 25, and delivery port and the water outlet tube opening 26 of spiral water pipe 9 connect
It is logical.The circular direction of spiral water pipe 9 is, from water inlet tube opening 25 via the axial water pipe for being close to the inside upper part of casing 1
Lead to double group stator core back of the yoke upper ends close to the side of end cap, double group stator core back of the yoke are arrived after flowing through spiral water pipe 9
Lower end inside, then it is pooled to by the inside bottom axial direction water pipe of casing 1 the water outlet tube opening 26 of the central bottom of casing 1.
The magnetic circuit trend of axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive is as shown in Figure 8.The auxiliary magnetic field of permanent magnet 12 produces
Magnetic flux (axial magnetic flux) by the effect of the magnetic conduction of permeability magnetic material 11 through rotating shaft 10 from front end rotor 14 through front end stator 4 via
Casing 1 arrives rear end rotor 15 again to rear end stator 5, eventually forms closure magnetic flux path, magnetic flux leave rotor 14 at one end and
Other end rotor 15 enters, therefore rotor 14 and 15 is polarized at both ends, and the magnetic pole of front end rotor 14 is N poles, and rear end rotor
15 magnetic poles are S poles.Every group of a pair of stator winding axially aligned are by being reversely connected in series to form A-A in motor stator winding 5 and 7
` (or B-B`, C-C`), as shown in Figure 3.As three-phase salient-pole machine, stator is per armature caused by each stator poles when being mutually powered
Magnetic flux is identical with the path of permanent magnet flux and direction.
The cooling structure of motor described in the present embodiment includes air-cooled structure and water-cooling structure altogether, and wherein air-cooled structure includes fixed
Cooling air channel 8 and 18, end cap vent 22 and 23, three cooling chambers 19,20 and 21, casings of the inter-tooth slots of son and rotor composition
On cooling wind air inlet 24, circumferential annular air-guiding aisle 27, rotor self-cooled fan 16 and 17, water-cooling structure includes casing
The spiral water pipe 9 of water inlet tube opening 25, water outlet tube opening 26 and track ring back of the yoke portion on 1.
Air-cooled process is：Air enters circumferential annular air-guiding aisle 27 through cooling down wind air inlet 24, and left and right sides is cold thereon
But the position of opening of hole 28 is axially asymmetric setting, contributes to each air-out of Cooling Holes 28 uniform, and cooling wind is by the first cooling chamber 19
Into cooling air channel 8 and 18, and cool down outside rotor 14 and 15, outside the tooth of stator 4 and 6, air gap and stator winding 5 between rotor
With 7, and the air being heated after motor operating brings the second cooling chamber the 20, the 3rd into by the centrifugal action of front and rear flabellum 16 and 17
Cooling chamber 21, through end cap vent, 22 and 23 discharge motor internals.
Cooling Process is：Coolant reaches the spiral of the outside of stator 4 and 6 from water inlet tube opening 25 via the inwall of casing 1
Water pipe 9, stator yoke is cooled down around stator yoke back ecto-entad, the outlet pipe for finally coming together in the central bottom of casing 1 is opened
Mouth 26, cools down air-cooled weakness first.
Because cooling wind is from the first cooling chamber 19 among motor into cooling air channel 8 and 18, stator 4 and 6, rotor are cooled down
14 and 15, therefore motor internal temperature gradually rises at mediad both ends vertically.Water cooling is with air-cooled action direction on the contrary, cold
But it regional complementarity, can effectively strengthen cooling effect, and make radiating more uniform.
The auxiliary radial direction magnetic resistance high-speed electric expreess locomotive of the axial permanent magnetic with combination cooling structure that the present embodiment provides, can be one
Armature supply is reduced under fixed condition to improve motor operation improved efficiency its performance indications.Cooling structure in the utility model simultaneously
It is combined by air-cooled rotor and water-cooled stator, makes the reduction of electric machine rotor temperature, avoids motor radiating under high-speed working condition difficult
The problem of.By stator water-cooling structure, heat caused by winding in stator punching is discharged via coolant by pipeline, it is fixed to make
Sub quick cooling.Meanwhile cooling airway can cool down air gap between rotor exterior, stator teeth and rotor, solve determining for motor
The problem of sub unshakable in one's determination, rotor core and rotor windings temperature are too high, make this kind of motor when working long hours, internal temperature maintains
In normal range (NR), it will not be burnt because of high temperature, so as to ensure the stable operation of motor long-term safety, effectively extend motor uses the longevity
Life.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in previous embodiment, either to which part or all technical characteristic
Carry out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from the utility model right and want
Seek limited range.
Claims (8)
- A kind of 1. axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive with combination cooling structure, it is characterised in that：Including casing, Drive end bearing bracket, rear end cap, rotor and stator；Stator organizes salient pole stators, including front end stator core and its winding, rear end stator core and its winding to be double；Front end stator Iron core is fixed on the casing inner wall of drive end bearing bracket side, and rear end stator core is fixed at the casing inner wall of rear end cap side On, 6 salient poles are uniformly distributed on the stator core of both ends, stator winding is concentrated and is wound on stator core；Adjacent stator core is convex Stator slot between pole is the air-cooled area of stator as stator shaft orientation cooling air channel；Stator is provided between stator yoke back and casing The spiral water-cooling channel in ring back of the yoke portion, as stator water-cooling area, the spiral water-cooling channel in track ring back of the yoke portion is surrounded on stator iron The back of the yoke portion of core, and it is close to or is embedded in the back of the yoke portion of stator core；The air-cooled direction of stator and stator water-cooling direction are orthogonal；Rotor is composite construction, and on the inside of stator, including rotating shaft, permeability magnetic material, permanent magnet, permanent magnet protective case and double groups turn Sub- iron core；Rotating shaft is coaxially disposed with casing, and permeability magnetic material is wrapped in rotating shaft lateral surface；Permanent magnet is axially sleeved permanent magnet, Embedded permeability magnetic material center, for additive excitation, is cased with permanent magnet protective case outside permanent magnet；Double group rotor iron cores and rotating shaft are same Axle rotates, including front end rotor core and rear end rotor core, and fixing assembling is in the lateral surface of permeability magnetic material rear and front end respectively, And be arranged concentrically respectively with front end stator core and rear end stator core, air gap is provided between stator and rotor iron core；Both ends rotor iron 4 salient poles are uniformly distributed on core；Rotor is fixed with before the rotor core of front end and behind the rotor core of rear end respectively certainly Flabellum after flabellum and rotor self-cooled fan before cold type fan；Rotor slot between adjacent rotor iron core salient pole is as rotor axial Cooling air channel；The first cooling chamber is formed between the inner end wall of double groups of rotors, between double groups of rotor outer end walls and front and rear cover inner end wall Form the second cooling chamber and the 3rd cooling chamber, air gap and rotor axial direction cooling air channel are by the first cooling chamber and second between rotor Cooling chamber, the connection of the 3rd cooling chamber；The casing uses permeability magnetic material, and air inlet, water inlet tube opening and water outlet tube opening are offered among casing；Casing inner wall Center is connected with the circumferential annular air-guiding aisle communicated with air inlet, and the axial two sides of circumferential annular air-guiding aisle are first-class Spacing is provided with the Cooling Holes of some protrusions, and Cooling Holes connect circumferential annular air-guiding aisle with the first cooling chamber；Among casing Water inlet tube opening, the water inlet of the water outlet tube opening difference spiral water-cooling channel in connecting stator ring back of the yoke portion and the water outlet opened up Mouthful；Be equipped with some vents on the drive end bearing bracket and rear end cap, vent by the second cooling chamber, the 3rd cooling chamber with it is outside Contact air.
- 2. the axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive according to claim 1 with combination cooling structure, it is special Sign is：The spiral water-cooling channel in track ring back of the yoke portion is spiral water pipe, by one whole water pipe along stator back of the yoke Portion surround and formed, the water inlet pipe open communication on the water inlet and casing of spiral water pipe, the delivery port of spiral water pipe With the outlet pipe open communication on casing；Spacing around the adjacent water pipe at stator yoke back is identical.
- 3. the axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive according to claim 2 with combination cooling structure, it is special Sign is：The spiral water pipe in the track ring back of the yoke portion is high by thermal conductivity and material that magnetic conductivity is low is made；Spiral The duct width of formula water pipe is 6mm, duct height 4mm, and the adjacent water channel tube pitch around stator yoke back is 5~7mm, The cooling water that flow velocity is 1.5m/s is connected with inside spiral water pipe.
- 4. the axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive according to claim 2 with combination cooling structure, it is special Sign is：The water inlet tube opening is arranged on the top among casing, and water outlet tube opening is arranged on the bottom among casing；Spiral The circular direction of formula water pipe is to lead to double group stators from water inlet tube opening via the axial water pipe for being close to internal side of shell top Double group stator core back of the yoke lower end insides are arrived, then lead in iron core yoke back end close to the side of end cap after flowing through spiral water pipe Cross the water outlet tube opening that internal side of shell bottom axial direction water pipe is pooled to casing central bottom.
- 5. the axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive according to claim 1 with combination cooling structure, it is special Sign is：The Cooling Holes the number of openings of the casing inner wall circumference annular air-guiding aisle opens up air draft with drive end bearing bracket, rear end cap The total quantity in hole is identical, and Cooling Holes are dimensioned slightly smaller than vent.
- 6. the axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive according to claim 1 with combination cooling structure, it is special Sign is：Vent on the drive end bearing bracket and rear end cap extends and is connected with into the second cooling chamber and the 3rd cooling chamber respectively The exhaust duct of one section of opening upwards, make vent connected with exhaust duct after be shaped as laterally disposed L-type.
- 7. the axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive according to claim 1 with combination cooling structure, it is special Sign is：The blade radius of the preceding flabellum of rotor self-cooled fan and rear flabellum is higher than the radius of rotor iron core salient pole, and low In the radius of stator core back of the yoke.
- 8. the axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive according to claim 1 with combination cooling structure, it is special Sign is：The stator core is formed using silicon steel plate stacking.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020073422A1 (en) * | 2018-10-09 | 2020-04-16 | 中车大同电力机车有限公司 | High-power switched reluctance motor and system, control method, and controller |
| CN113922568A (en) * | 2021-08-27 | 2022-01-11 | 东南大学盐城新能源汽车研究院 | High power density motor stator cooling structure |
| US20220348338A1 (en) * | 2019-02-18 | 2022-11-03 | Safran | Electrical propulsion unit for an aircraft and method for using such a propulsion unit |
-
2017
- 2017-07-19 CN CN201720877469.2U patent/CN207150378U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020073422A1 (en) * | 2018-10-09 | 2020-04-16 | 中车大同电力机车有限公司 | High-power switched reluctance motor and system, control method, and controller |
| US20220348338A1 (en) * | 2019-02-18 | 2022-11-03 | Safran | Electrical propulsion unit for an aircraft and method for using such a propulsion unit |
| CN113922568A (en) * | 2021-08-27 | 2022-01-11 | 东南大学盐城新能源汽车研究院 | High power density motor stator cooling structure |
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