CN206272356U - A kind of alternating current asynchronous direct-drive high-speed motor - Google Patents
A kind of alternating current asynchronous direct-drive high-speed motor Download PDFInfo
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- CN206272356U CN206272356U CN201621377764.3U CN201621377764U CN206272356U CN 206272356 U CN206272356 U CN 206272356U CN 201621377764 U CN201621377764 U CN 201621377764U CN 206272356 U CN206272356 U CN 206272356U
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- alternating current
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Abstract
The utility model discloses a kind of alternating current asynchronous direct-drive high-speed motor, including housing, stator and magnetic conduction steel solid rotor, the stator is installed in housing, the magnetic conduction steel solid rotor is placed in stator, the magnetic conduction steel solid rotor two ends connect a semiaxis respectively, and the semiaxis is supported on housing by bearing assembly.Alternating current asynchronous direct-drive high-speed motor of the present utility model can bear critical speed higher, convenient disassembly, can reduce dynamic balancing adjustment number of times.
Description
Technical field
The utility model is related to high-speed electric expreess locomotive, more particularly to a kind of alternating current asynchronous direct-drive high-speed motor.
Background technology
Direct-drive high-speed motor is a kind of novel product of substitution " conventional low motor+gear-box or belt drive system ",
Can be widely applied to vapour compression machine, refrigeration compressor, air compressor, air blower, expanding machine, gas turbine power generation, waste heat
The high speed turbomachinery such as generating, desulfurization and dedusting field.Overcome due to direct-drive high-speed motor " conventional low motor+gear-box or
The deficiencies such as the high energy consumption of belt drive system ", noise are big, vibration is big, trouble point is more, can obtain significant synergy, energy-conservation, drop
The effect made an uproar, thus market is more and more urgent to the demand of high-speed electric expreess locomotive in recent years.
Direct-drive high-speed motor can be divided into permanent-magnet type according to the operation principle of electric machine rotor（Including permanent-magnet synchronous and permanent magnetism
Brushless direct-current）With alternating current asynchronous type.Although magneto power density is big, efficiency high, when generally existing using one section
Between after demagnetize to some extent phenomenon, phenomenon of particularly being demagnetized in high temperature and the violent environment of vibration is more obvious.Compare
For, AC induction motor reliability is high, and electromagnetic property is to temperature change and vibrates insensitive, stable performance, thus in engineering
On obtained widely application.
Alternating current asynchronous high-speed electric expreess locomotive needs to use high voltage supply in many applications（Usually 3000V, 6000V,
10000V）, and very big power output is needed, usually reach 1MW to 20MW.High-voltage high-power motor requirement machine shaft
Very big moment of torsion can be exported, the requirement of mechanical strength of countershaft is very high, simultaneously because the characteristics of high-speed cruising, rotor axis of electric
System must also have sufficiently high rigidity and critical speed as high as possible.
Improving rotor shafting rigidity and the method for critical speed at present mainly has；Increase shaft diameter；Shorten bearing
Span；Improve spindle material intensity；By rotor and rotating shaft Desing of Interference Joint；Using " rod fastening rotor " structure etc..
" increase shaft diameter；Shorten bearing span；Improve spindle material intensity " method at present engineering field by
Extensive use.But after material property and dimensions of mechanical structures space are excavated to certain limit, it is difficult to be further continued for further carry
The rigidity of shafting high.
The method of " by rotor and rotating shaft Desing of Interference Joint ", is also extensive current high-speed electric expreess locomotive field enhancing shaft stiffness
The method of application.The main deficiency of the method is：Rotor Desing of Interference Joint to after in rotating shaft, it is difficult to dismantle；Even if using special
Tooling device, there is also that disassembly cost is high, the operating time is long, be easily damaged motor rotor inner hole and rotating shaft outer surface lacks
Point.
" rod fastening rotor " is a kind of method that domestic and international high rate turbine machinery field has used, and it is by AC induction motor
Rotor（Mouse cage type structure, silicon steel sheet is coupled as one）It is enclosed within former and later two " semiaxis ", is adopted between two " semiaxis "
It is coupled with pull bar, rotor axial system becomes an entirety under the pulling force effect of pull bar.Because pull bar effect increased rotor
The bending rigidity of end face, this structure can also be played increases the effect of rotor axial system rigidity." but rod fastening rotor " structure
There is obvious deficiency：One is to need special tooling device, and assembling technology procedure is complicated, to assemble the skill set requirements of master worker compared with
Height, pulling force and the Deformation control requirement to pull bar is very strict；Two is typically to be difficult to dismantle again after shafting is assembled, if dismounting
The form of " destruction " certain part would generally be taken to save other parts from damage；Three is that once quality problems occurs in pull bar, will face
Cause rotor axial system to be broken, the risk of serious accident occurs.
Because existing high speed rotor of motor shafting has disadvantages mentioned above, high-speed electric expreess locomotive is caused to fail in compressor, drum
The high speed turbomachinery field extensive use such as blower fan, expanding machine, gas turbine power generation, cogeneration, desulfurization and dedusting.
Utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, there is provided a kind of to bear higher
Critical speed, convenient disassembly, the alternating current asynchronous direct-drive high-speed motor that dynamic balancing adjustment number of times can be reduced.
In order to solve the above technical problems, the utility model uses following technical scheme：
A kind of alternating current asynchronous direct-drive high-speed motor, including housing, stator and magnetic conduction steel solid rotor, the stator are installed in
In housing, the magnetic conduction steel solid rotor is placed in stator, and the magnetic conduction steel solid rotor two ends connect a semiaxis, institute respectively
Semiaxis is stated to be supported on housing by bearing assembly.
As the further improvement of above-mentioned technical proposal：
The magnetic conduction steel solid rotor is in offering two circumferential grooves and a plurality of axial groove, a plurality of axle on outer circumference surface
To groove between two circumferential grooves, the end of each axial groove is connected with circumferential groove, and copper end ring, institute are embedded in the circumferential groove
State and be embedded in axial groove copper sliver.
The copper end ring and copper sliver are welded to connect with magnetic conduction steel solid rotor.
The magnetic conduction steel solid rotor and semiaxis pass through the multiple mode connects for screw being distributed uniformly and circumferentially, the multiple
The radial position of screw is less than circumferential groove and the radial slot bottom position of axial groove.
The screw stretches into the axial location of the depth no more than copper end ring of magnetic conduction steel solid rotor.
Compared with prior art, the utility model has the advantage of：
Alternating current asynchronous direct-drive high-speed motor of the present utility model, magnetic conduction steel solid rotor two ends connect a semiaxis respectively, and half
Axle is supported on housing by bearing assembly, and magnetic conduction steel solid rotor has intensity higher than traditional silicon steel sheet rotor, can
Critical speed higher is born, the maximum linear velocity that traditional silicon steel sheet rotor can bear is usual in 180m/s or so, but this
The maximum linear velocity that the magnetic conduction steel solid rotor of utility model can bear is up to 250m/s；Magnetic conduction steel solid rotor and semiaxis
Joining Technology is very simple, and assembly and disassembly is all very convenient, and will not part of damage, it is to avoid existing rod fastening rotor assembly and disassembly inconvenience,
Easily damage the deficiency of part；Because existing servo-motor silicon steel sheet rotor high-speed cruising can re-start stress distribution afterwards for a period of time, turn
Sub- dynamic balancing can be destroyed, therefore servo-motor silicon steel sheet rotor assembling needs carry out multiple dynamic balancing, but magnetic conduction steel of the present utility model
Solid rotor is due to being connected firmly, Mass Distribution stabilization, and high-speed cruising will not typically destroy the dynamic balancing of shafting, therefore can subtract
The number of times of few dynamic balancing adjustment.Magnetic conduction steel solid rotor and semiaxis pass through the multiple mode connects for screw being distributed uniformly and circumferentially,
The connection pulling force of its totality is bigger than the pulling force of rod fastening rotor, and the ability of resist torque deformation is also bigger.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model alternating current asynchronous direct-drive high-speed motor embodiment.
Fig. 2 is the A-A cross section views of magnetic conduction steel solid rotor in Fig. 1.
Fig. 3 is the B-B cross section views of magnetic conduction steel solid rotor in Fig. 1.
Fig. 4 is the C-C cross section views of magnetic conduction steel solid rotor in Fig. 1.
Each label sign in figure：
1st, housing；2nd, stator；3rd, magnetic conduction steel solid rotor；31st, circumferential groove；32nd, axial groove；4th, semiaxis；5th, bearing assembly；
6th, copper end ring；7th, copper sliver；8th, screw.
Specific embodiment
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the alternating current asynchronous direct-drive high-speed motor of the present embodiment, including housing 1, stator 2
With magnetic conduction steel solid rotor 3, stator 2 is installed in housing 1, and magnetic conduction steel solid rotor 3 is placed in stator 2, and magnetic conduction steel is solid
The two ends of rotor 3 connect a semiaxis 4 respectively, and semiaxis 4 is supported on housing 1 by bearing assembly 5.Alternating current asynchronous of the present utility model
Direct-drive high-speed motor, magnetic conduction steel solid rotor 3 has intensity higher than traditional silicon steel sheet rotor, can bear higher critical
Rotating speed, the maximum linear velocity that traditional silicon steel sheet rotor can bear is generally in 180m/s or so, but magnetic conduction of the present utility model
The maximum linear velocity that steel solid rotor 3 can bear is up to 250m/s；Magnetic conduction steel solid rotor 3 is non-with the Joining Technology of semiaxis 4
Often simple, assembly and disassembly is all very convenient, and will not part of damage, it is to avoid existing rod fastening rotor assembly and disassembly inconvenience, easily damage zero
The deficiency of part；Because existing servo-motor silicon steel sheet rotor high-speed cruising can re-start stress distribution, rotor dynamic balancing meeting afterwards for a period of time
It is destroyed, therefore servo-motor silicon steel sheet rotor assembling needs carry out multiple dynamic balancing, but magnetic conduction steel solid rotor 3 of the present utility model by
In being connected firmly, Mass Distribution stabilization, high-speed cruising will not typically destroy the dynamic balancing of shafting, therefore can reduce dynamic balancing tune
Whole number of times.
In the present embodiment, magnetic conduction steel solid rotor 3 is in offering two circumferential grooves 31 and a plurality of axial groove on outer circumference surface
32, between two circumferential grooves 31, the end of each axial groove 32 connects a plurality of axial groove 32 with circumferential groove 31, circumferential groove 31
Inside it is embedded in copper end ring 6, axial groove 32 and is embedded copper sliver 7, the structure being embedded in groove can increases copper end ring 6 and copper sliver 7
With the contact area and bonding strength of the matrix of magnetic conduction steel solid rotor 3, there is the matrix material guarantor of one fixed width in the outside of copper end ring 6
Shield, and make matrix material can be used for being coupled with semiaxis, and be unlikely to influence the electromagnetic performance of rotor；The He of copper end ring 6
Copper sliver 7 is welded to connect with magnetic conduction steel solid rotor 3, and squirrel-cage solid rotor structure is constituted by high pressure welding procedure, can
Enhancing rotor bulk strength.
In the present embodiment, multiple screws 8 that magnetic conduction steel solid rotor 3 passes through to be distributed uniformly and circumferentially with semiaxis 4 connect
Connect, the connection pulling force of its totality is bigger than the pulling force of rod fastening rotor.The radial position of multiple screws 8 is less than circumferential groove 31 and axially
The radial slot bottom position of groove 32, screw 8 stretches into the axial location of the depth no more than copper end ring 6 of magnetic conduction steel solid rotor 3, makes to lead
The minimum material thickness of magnet steel solid rotor 3 amplifies as far as possible, so as to reduce the wind that weak link is damaged under the action of the centrifugal force
Danger.In the present embodiment, the pulling force point of screw 8 is near rotor outer circle, and the arm of force relative to axle center is long, so resist torque deformation
Ability is also bigger.
Although the utility model is disclosed above with preferred embodiment, but it is not limited to the utility model.It is any
Those of ordinary skill in the art, in the case where technical solutions of the utility model scope is not departed from, all using the disclosure above
Technology contents technical solutions of the utility model are made with many possible variations and modification, or be revised as the equivalent of equivalent variations
Embodiment.Therefore, every content without departing from technical solutions of the utility model, it is real to more than according to the utility model technical spirit
Any simple modification, equivalent variation and modification that example is done are applied, all should be fallen in the range of technical solutions of the utility model protection.
Claims (5)
1. a kind of alternating current asynchronous direct-drive high-speed motor, it is characterised in that：Including housing（1）, stator（2）With magnetic conduction steel solid rotor
（3）, the stator（2）It is installed in housing（1）It is interior, the magnetic conduction steel solid rotor（3）It is placed in stator（2）It is interior, the magnetic conduction
Steel solid rotor（3）Two ends connect a semiaxis respectively（4）, the semiaxis（4）By bearing assembly（5）It is supported on housing（1）On.
2. alternating current asynchronous direct-drive high-speed motor according to claim 1, it is characterised in that：The magnetic conduction steel solid rotor
（3）In offering two circumferential grooves on outer circumference surface（31）With a plurality of axial groove（32）, a plurality of axial groove（32）Located at two
Bar circumferential groove（31）Between, each axial groove（32）End and circumferential groove（31）Connection, the circumferential groove（31）Inside it is embedded copper
End ring（6）, the axial groove（32）Inside it is embedded copper sliver（7）.
3. alternating current asynchronous direct-drive high-speed motor according to claim 2, it is characterised in that：The copper end ring（6）Led with copper
Bar（7）With magnetic conduction steel solid rotor（3）It is welded to connect.
4. the alternating current asynchronous direct-drive high-speed motor according to Claims 2 or 3, it is characterised in that：Solid turn of the magnetic conduction steel
Son（3）With semiaxis（4）By the multiple screws being distributed uniformly and circumferentially（8）Connection, the multiple screw（8）Radial direction position
Set low in circumferential groove（31）And axial groove（32）Radial slot bottom position.
5. alternating current asynchronous direct-drive high-speed motor according to claim 4, it is characterised in that：The screw（8）Stretch into magnetic conduction
Steel solid rotor（3）Depth be no more than copper end ring（6）Axial location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621377764.3U CN206272356U (en) | 2016-12-15 | 2016-12-15 | A kind of alternating current asynchronous direct-drive high-speed motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621377764.3U CN206272356U (en) | 2016-12-15 | 2016-12-15 | A kind of alternating current asynchronous direct-drive high-speed motor |
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| CN206272356U true CN206272356U (en) | 2017-06-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787274A (en) * | 2016-12-15 | 2017-05-31 | 南通金驰机电有限公司 | A kind of alternating current asynchronous direct-drive high-speed motor |
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2016
- 2016-12-15 CN CN201621377764.3U patent/CN206272356U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787274A (en) * | 2016-12-15 | 2017-05-31 | 南通金驰机电有限公司 | A kind of alternating current asynchronous direct-drive high-speed motor |
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