CN206412846U - Frequency conversion high-speed wet type fire-proof motor stator and rotor slot fit structure - Google Patents
Frequency conversion high-speed wet type fire-proof motor stator and rotor slot fit structure Download PDFInfo
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- CN206412846U CN206412846U CN201621393078.5U CN201621393078U CN206412846U CN 206412846 U CN206412846 U CN 206412846U CN 201621393078 U CN201621393078 U CN 201621393078U CN 206412846 U CN206412846 U CN 206412846U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 14
- 238000004080 punching Methods 0.000 claims abstract description 19
- 238000004804 winding Methods 0.000 claims abstract description 15
- 239000007787 solid Substances 0.000 claims abstract description 10
- 230000004907 flux Effects 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000009467 reduction Effects 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 230000010355 oscillation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000010349 pulsation Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model is related to a kind of frequency conversion high-speed wet type fire-proof motor stator and rotor slot fit structure, wet type electric motor belongs to threephase asynchronous, for double-deck short distance Concentrical winding, stator (1) is overrided to form by punching (3), rotor (2) is solid shafting hot jacket collar (4) structure, stator groove profile (5) is semi-closed port parallel teeth dovetail groove, and slot shape of rotor (6) is the closed slot of falling pyriform.Under variable-frequency power sources starting, motor realizes permanent torque smooth start, and noise is low, vibration is small, and motor performance and temperature rise are qualified, and motor reaches use requirement.
Description
Technical field：The utility model is related to a kind of frequency conversion high-speed wet type fire-proof motor stator and rotor slot fit structure.
Background technology：6000rpm frequency conversion high-speed wet types fire-proof motor is used for that colliery to be permeable speedily carries out rescue work, and is national science and technology support meter
Problem support items are drawn, power is 600kW, voltage 6000V, and vertical machine, the motor is 2 pole motors, and rotating speed 6000rpm becomes
Frequency is started, and the design of 6000rpm wet type electric motor, manufacture be international at present not to have precedent also, reasonable selection stator and rotor groove coordinate and
Groove profile is huge to influence on Harmonic Armature to be coordinated and groove profile, it is necessary to develop stator and rotor groove, therefore reasonable selection stator and rotor groove coordinates
And groove profile can suppress harmonic wave, noise is reduced, starting performance is improved, higher efficiency and power factor is obtained, to critical speed also
Have an impact, suitable groove profile is beneficial to reduce motor diameter size, is easy to water pump to go into the well.
The content of the invention：The purpose of this utility model is to provide a kind of frequency conversion high-speed wet type fire-proof motor stator and matched somebody with somebody with rotor slot
Close structure：Ensure that motor disclosure satisfy that the start request of pump.The technical solution of the utility model is：A kind of frequency conversion high-speed wet type is prevented
Quick-fried motor stator and rotor slot fit structure, wet type electric motor belongs to threephase asynchronous, is double-deck short distance Concentrical winding, fixed
Sub (1) is overrided to form by punching (3), and rotor (2) is solid shafting hot jacket collar (4) structure, and stator groove profile (5) is that semi-closed port is parallel
Tooth dovetail groove, slot shape of rotor (6) is the closed slot of falling pyriform.
Number of stator slots is 24, and rotor slot number is 34, and the air gap flux density of motor is 0.6T or so, and stator (1) is flume structure,
That is the groove groove corresponding with last punching of first punching of stator core, axis rotates an angle, and stator slot was turned round
One stator tooth away from.
Wet type electric motor is double-deck short distance Concentrical winding, and rule easily, is easy to implement mechanization.General q1 (per pole each
Slot number)=4,6,8 be applied to two-pole machine, the utility model q1=4, number of stator slots be 24 grooves be applied to concentric bilayer short distance around
Group, skewed stator slot, an oblique stator tooth is away from rotor slot number should coordinate with number of stator slots to be determined, the selection that stator, rotor slot coordinate
Motor normal starting should be enable, torque, rotating speed are smooth, and without notable vibration when starting and operating, electromagnetic noise, stray loss are small.
Asynchronous motor is coordinated using few groove, nearly groove, i.e., rotor slot number is close and less than number of stator slots, can reduce slot ripples
The pulsation loss that magnetic flux is produced in core tooth, thus it is advantageous to reduction stray loss and temperature rise ratio.But few groove, nearly groove coordinate
Easily produce electric and magnetic oscillation and noise, it is also possible to which producing synchronizing torque should consider comprehensively.
Rotor groove coordinates the noise with asynchronous machine to have direct relation, and electromagnetic noise is one of noise source, electromagnetic noise
It is main to be caused by the Reeb vibration of higher hamonic wave, i.e., change with time and space, the power acted between the stator and the rotor can
To cause electromagnetic noise by stator core vibrating；A radial load is acted at any point of air gap, it is in unit plane
Any point of size and air gap in product acts on a radial load, its size and air gap flux density in unit area it is flat
Side is directly proportional, therefore selects alap air gap flux density necessary for Motor for Reducing Electromagnetic Noise, the air gap of this motor
Magnetic is close for 0.6T or so.Number of stator slots is Z1, and rotor slot number is Z2, and motor number of pole-pairs is p, to be met for low noise motor：│
Z1, Z2 │ ≠ 0,1,2, │ Z1, Z2 │ ≠ 2p, 2p ± 1,2p ± 2；Also need to make the number of times of most strong stator-rotator magnetic kinetic potential component not
It is consistent with the number of times of some big air-gap permeance wave components, │ Z1, Z2 │ ≠ p, │ Z1, Z2 │ ≠ p ± 1, │ Z1, Z2 │ ≠ p ± 2；
This motor tentative programme groove, which is matched somebody with somebody, is combined into 24/28,24/34, but is vibrated from the close distribution of magnetic and starting performance and reduction
And noise point considers, contrasted by calculating, have selected 24/34.
Many common exchange cast-aluminum rotor motors can use skewed slot, and this motor is because being that rotor bar welding structure should not be oblique
Groove, a stator tooth was turned round away from being using the effect of skewed slot by stator slot：Motor internal has the harmonic wave of various frequencies, because of stator
Using distribution short distance winding, so the harmonic magnetic potential amplitude of other frequencies in addition to slot ripples is dramatically weakened.
Because slot ripples winding coefficient is equal to fundamental wave winding coefficient, so tooth harmonic MMF is barely affected.Because phase asynchronous electricity
The stator and rotor fluting of motivation, causes the magnetic resistance in whole air gap circumference range uneven, electromagnetic torque and sensing when motor is operated
Electromotive force is accordingly fluctuated.After skewed stator slot, the electromagnetic torque and induced electromotive force of formation are similar to same wire and are uniformly distributed
Average value in one section of circumference range, can effectively weaken the harmonic wave electromotive force produced by harmony wave, thus weaken by
Additional torque caused by these harmonic fields, reduction electric and magnetic oscillation and noise.Although after skewed stator slot also stator can sense
Fundamental wave electromotive force is reduced, but the skew slot angle of selection is much smaller for pole span for a tooth pitch, thus to motor basic nature
Very little can be influenceed, therefore uses skewed stator slot.
Stator punching groove profile uses semi-closed port parallel teeth dovetail groove, it is possible to reduce pulsating is damaged in surface loss and tooth unshakable in one's determination
Consumption, and reduce effective air gap length, power factor is improved.Rotor can reach that reduction surface is additional using closed slot to be damaged
The effect of consumption, while closed slot is also beneficial to prevent rotor bar from throwing away, beneficial to motor diameter size is reduced, is easy under water pump
Well, common alternating current generator solid shaft rotor groove profile is generally open slot, and this motor for colliery because being speedily carried out rescue work, it is desirable to which diameter is tried one's best
It is small, it is computed, under desired design size, the yoke magnetic of rotor openings groove is close higher, should not use.This motor is because being solid turn
Sub therefore closed slot not easy processing, to solve this problem, using collar is covered on solid shafting, collar hot jacket is on axle, collar length
It is short to be easy to processing, using wire cutting.
Stator and rotor groove of the present utility model coordinates：24/34, stator groove profile uses semi-closed port parallel teeth dovetail groove, and stator is oblique
Groove, rotor uses closed slot, and by FEM calculation, under groove cooperation and groove profile, motor can be normal under variable-frequency power sources
Start, be stepped up in full load starting 15s close to 5200rpm, motor full-load run rotor speed is 5959rpm, motor is realized
Start-up of constant torque.There is no the close excessive phenomenon of local magnetic, relatively low electromagnetic noise and vibration during varying frequency starting, and starting performance is good
It is good.
Utility model works principle
The utility model is a kind of frequency conversion high-speed wet type fire-proof motor stator and rotor slot fit structure, and wet type electric motor belongs to
Threephase asynchronous, is double-deck short distance Concentrical winding, and stator 1 is overrided to form by punching 3, and rotor 2 is solid shafting shrunk-in shaft
The structure of ring 4, stator groove profile 5 is semi-closed port parallel teeth dovetail groove, and slot shape of rotor 6 is the closed slot of falling pyriform.
Number of stator slots is 24, and rotor slot number is 34, and the air gap flux density of motor is 0.6T or so, and stator 1 is flume structure, i.e.,
The groove groove corresponding with last punching of first punching of stator core, axis rotates an angle, and stator slot was turned round into one
Individual stator tooth away from.
The utility model ensures that motor disclosure satisfy that the start request of pump.Stator coordinates with rotor slot：24/34, stator slot
Type is semi-closed port parallel teeth dovetail groove, shown in Fig. 3, and rotor is the closed slot of falling pyriform, and shown in Fig. 4, stator is skewed slot.Wet type electric motor
For double-deck short distance Concentrical winding, rule easily, is easy to implement mechanization.General q1 (per each slot number of pole)=4,6,8 is applicable
In two-pole machine, the utility model q1=4, number of stator slots is 24, it is adaptable to concentric bilayer short distance winding, and stator is short using being distributed
Away from layer and Double-layer Concentric Winding, so the harmonic magnetic potential amplitude of other frequencies in addition to slot ripples is dramatically weakened.
Because slot ripples winding coefficient is equal to fundamental wave winding coefficient, so tooth harmonic MMF is barely affected.Because phase asynchronous electricity
The stator and rotor fluting of motivation, causes the magnetic resistance in whole air gap circumference range uneven, electromagnetic torque and sensing when motor is operated
Electromotive force is accordingly fluctuated, after skewed stator slot, and the electromagnetic torque and induced electromotive force of formation are similar to same wire and be uniformly distributed
Average value in one section of circumference range, can effectively weaken the harmonic wave electromotive force produced by harmony wave, thus weaken by
Additional torque caused by these harmonic fields, reduction electric and magnetic oscillation and noise.Although after skewed stator slot also stator can sense
Fundamental wave electromotive force is reduced, but the skew slot angle of selection is much smaller for pole span for a tooth pitch, thus to motor basic nature
Very little can be influenceed, therefore uses skewed stator slot.
Stator punching groove profile uses semi-closed port parallel teeth dovetail groove, it is possible to reduce pulsating is damaged in surface loss and tooth unshakable in one's determination
Consumption, and reduce effective air gap length, power factor is improved.Rotor can reach that reduction surface is additional using closed slot to be damaged
The effect of consumption, while closed slot is also beneficial to prevent rotor bar from throwing away, reduces the size beneficial to motor, is easy to water pump to go into the well.It is general
Logical alternating current generator solid shaft rotor groove profile is generally open slot, and this motor for colliery because speedily carrying out rescue work, it is desirable to which diameter is as far as possible small, warp
Calculate, under desired design size, the yoke magnetic of rotor openings groove is close higher, should not use.
Rotor slot number should coordinate with number of stator slots to be determined, the selection that stator and rotor groove coordinates should enable motor normal starting, turn
Square-rotating speed is smooth, and without notable vibration when starting and operating, electromagnetic noise, stray loss are small.
Asynchronous motor is coordinated using few groove, nearly groove, i.e., rotor slot number is close and less than number of stator slots, can reduce slot ripples
The pulsation loss that magnetic flux is produced in core tooth, thus it is advantageous to reduction stray loss and temperature rise ratio.But few groove, nearly groove coordinate
Easily produce electric and magnetic oscillation and noise, it is also possible to which producing synchronizing torque should consider comprehensively.This motor tentative programme groove, which is matched somebody with somebody, to be combined into
24/28,24/34 but from magnetic it is close distribution and starting performance and reduction vibration and noise point consider, through calculating contrast, selection
24/34.
The utility model groove coordinates：24/34, by FEM calculation, under groove cooperation and groove profile, motor is in variable-frequency electric
Under source can normal starting, be stepped up close to 5200rpm in full load starting 15s, motor full-load run rotor speed is
5959rpm, motor realizes Start-up of constant torque.There is no local magnetic close excessive phenomenon during varying frequency starting, and starting performance is good.
The technique effect of utility model：1) when motor frequency conversion is started, designed motor can complete starting process, 2) motor
Without the close excessive phenomenon of part magnetic.3) air gap flux density 0.615T during no-load running, full load is 0.585T, 4) motor test noise
Low, vibrate for 2.2m/s, 5) motor temperature rise is qualified.
Brief description of the drawings：
Fig. 1 frequency conversion high-speed wet type fire-proof motor structure sectional views
Fig. 2 stators, rotor slot matching chart
Fig. 3 stator punching profile of groove
Fig. 4 slot shape of rotor figures
Embodiment：
As shown in figure 1, a kind of frequency conversion high-speed wet type fire-proof motor stator and rotor slot fit structure, wet type electric motor belong to three
Phase Induction Machines, using double-deck short distance Concentrical winding, are overrided to form, rotor 2 is solid as shown in Fig. 2 stator 1 is punching 3
The structure of axle hot jacket collar 4, stator groove profile 5 is semi-closed port parallel teeth dovetail groove, as shown in figure 3, slot shape of rotor 6 is remained silent for pyriform
Groove.
Number of stator slots is 24, and rotor slot number is 34, and the air gap flux density of motor is 0.6T or so, as shown in figure 4, stator 1 is
Flume structure, the i.e. groove groove corresponding with last punching of first punching of stator core, axis rotates an angle, will be fixed
Pilot trench turned round a stator tooth away from.The groove of motor, which is matched somebody with somebody, is combined into 24/34, stator punching groove profile as shown in figure 3, stator punching groove profile is
Semi-closed port parallel teeth dovetail groove, the bottom of groove is broader than the top, makes tooth wall substantially parallel, and machine winding is concentric type, non-forming
Coil.Pulsation loss in surface loss unshakable in one's determination and tooth can be reduced using semi-enclosed slot, and reduce effective air gap length, power
Factor is improved.Slot shape of rotor as shown in Figure 4 is closed slot, and its advantage is the added losses for reducing motor, is contracted beneficial to motor
Small size, is easy to water pump to go into the well, and common alternating current generator solid shaft rotor groove profile is generally open slot, and this motor is because for colliery
Speedily carry out rescue work, it is desirable to which diameter is as far as possible small, be computed, under desired design size, the yoke magnetic of rotor openings groove is close higher, should not adopt
With while because the rotating speed of motor is high, groove profile of remaining silent is more conducive to prevent copper bar from throwing away.
Rotor slot number should coordinate with number of stator slots to be determined, the selection that stator and rotor groove coordinates should enable motor normal starting, turn
Square-rotating speed is smooth, and without notable vibration when starting and operating, electromagnetic noise, stray loss are small.
Asynchronous motor is coordinated using few groove-nearly groove, i.e., rotor slot number is close and less than number of stator slots, can reduce tooth humorous
The pulsation loss that ripple magnetic flux is produced in iron core teeth, thus it is advantageous to reduction stray loss and temperature rise ratio.But few groove-nearly groove
Coordinate and easily produce electric and magnetic oscillation and noise, it is also possible to which producing synchronizing torque should consider comprehensively.This motor tentative programme groove is matched somebody with somebody
24/28,24/34 is combined into, but is distributed and starting performance and reduction vibration and noise point consideration from magnetic is close, by calculating pair
Than have selected 24/34.
24/34 groove coordinates, and the groove for producing adverse consequences according to Xi'an Communications University's design of electrical motor, which coordinates, to be accounted for not
Calculated in the range of, and with finite element, motor can realize Start-up of constant torque under variable-frequency power sources, reduce vibration and
Noise, is calculated according to grooved size, and motor is without the close too high phenomenon of local magnetic.By verification experimental verification, motor can smooth start,
Noise is low, vibration values are 2.2m/s, and motor performance, motor temperature rise are qualified.
The utility model is a kind of frequency conversion high-speed wet type fire-proof motor stator and rotor slot fit structure, and groove, which is matched somebody with somebody, is combined into 24/
34, stator punching groove profile is semi-closed port parallel teeth dovetail groove, and rotor is the closed slot of falling pyriform, under variable-frequency power sources starting, motor
Permanent torque smooth start is realized, noise is low, vibration is small, and motor performance and temperature rise are qualified, and motor reaches use requirement.
Claims (2)
1. a kind of frequency conversion high-speed wet type fire-proof motor stator and rotor slot fit structure, it is characterized in that：Wet type electric motor belongs to three-phase
Asynchronous motor, is double-deck short distance Concentrical winding, and stator (1) is overrided to form by punching (3), and rotor (2) is solid shafting hot jacket
Collar (4) structure, stator groove profile (5) is semi-closed port parallel teeth dovetail groove, and slot shape of rotor (6) is the closed slot of falling pyriform.
2. a kind of frequency conversion high-speed wet type fire-proof motor stator according to claim 1 and rotor slot fit structure, its feature
It is：Number of stator slots is 24, and rotor slot number is 34, and the air gap flux density of motor is 0.6T, and stator (1) is flume structure, i.e. stator iron
The groove groove corresponding with last punching of first punching of core, axis rotates an angle, and stator slot was turned round into a stator
Tooth pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621393078.5U CN206412846U (en) | 2016-12-19 | 2016-12-19 | Frequency conversion high-speed wet type fire-proof motor stator and rotor slot fit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621393078.5U CN206412846U (en) | 2016-12-19 | 2016-12-19 | Frequency conversion high-speed wet type fire-proof motor stator and rotor slot fit structure |
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| Publication Number | Publication Date |
|---|---|
| CN206412846U true CN206412846U (en) | 2017-08-15 |
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| CN201621393078.5U Expired - Fee Related CN206412846U (en) | 2016-12-19 | 2016-12-19 | Frequency conversion high-speed wet type fire-proof motor stator and rotor slot fit structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787275A (en) * | 2016-12-19 | 2017-05-31 | 哈尔滨电气动力装备有限公司 | Frequency conversion high-speed wet type fire-proof motor stator and rotor slot fit structure |
-
2016
- 2016-12-19 CN CN201621393078.5U patent/CN206412846U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787275A (en) * | 2016-12-19 | 2017-05-31 | 哈尔滨电气动力装备有限公司 | Frequency conversion high-speed wet type fire-proof motor stator and rotor slot fit structure |
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Granted publication date: 20170815 |
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| CF01 | Termination of patent right due to non-payment of annual fee |