CN206323225U - A kind of ultrahigh speed asynchronous motor - Google Patents

Abstract

The utility model discloses a kind of ultrahigh speed asynchronous motor, including underframe, and stator, transmission end bearing, non-transmision end bearing and rotor, rotor is passed through after stator respectively to be driven end bearing and non-transmision end bearing as support；Rotor uses high notch Stamped steel type rotor, and rotor core is coordinated with axle using the big magnitude of interference, and some balancing frames are provided with the axle body of rotor；It is driven end bearing and non-transmision end bearing uses A seating sliding bearing；Air grid is offered on the preceding surface and rear surface of the casing of stator respectively, the preceding surface of stator casing is provided with cooling device connector, and cooling device is connected with stator casing.A kind of ultrahigh speed asynchronous motor of the present utility model, make to meet the motor performance requirement under the high rotating speed of high power capacity by Optimal Structure Designing, and grasp the key technology of the design of ultrahigh speed asynchronous machine based on this and develop difficult point, it is that the follow-up more high-revolving ultrahigh speed asynchronous machine development of more Large Copacity is laid the groundwork.

Description

A kind of ultrahigh speed asynchronous motor

Technical field

The utility model is related to a kind of motor, more particularly to a kind of ultrahigh speed asynchronous motor.

Background technology

High-capacity and ultra high-speed threephase asynchronous is a kind of for production requirement very high motor types in motor.Mesh The preceding country has the ability for manufacturing and designing the motor product that specification is 1500kW/8200rpm/690V without relevant manufacturers, big The capacity occasion that load is used at a high speed, is usually to be driven to load at a high speed again through speed raising apparatus to corresponding rotating speed by slow-speed motor, Such technology has that unit equipment quantity is more, unit whole efficiency is low, maintenance workload it is big in terms of.

Utility model content

The purpose of this utility model be in order to overcome the deficiencies in the prior art there is provided a kind of ultrahigh speed asynchronous motor, its With simple in construction, reliable, low cost advantage.

Realizing a kind of technical scheme of above-mentioned purpose is：A kind of ultrahigh speed asynchronous motor, including underframe, and be arranged on Stator, transmission end bearing, non-transmision end bearing and rotor on underframe, the rotor passed through and passed respectively with described after the stator Moved end bearing and the non-transmision end bearing are support；

The rotor uses Stamped steel type rotor, and iron core and the axle of the rotor are coordinated using the big magnitude of interference, the Stamped steel type Rotor is high notch rotor；Some balancing frames are provided with the axle body of the axle of the rotor；

The transmission end bearing and the non-transmision end bearing use sliding bearing；

Air grid, the preceding table of the stator casing are offered on the preceding surface and rear surface of the casing of the stator respectively On face close to the non-transmision end bearing side be provided with cooling device connector, cooling device by cooling device connector with The preceding surface connection of stator casing.

Further, transmission end bearing block and non-transmision end bearing block, the driving end are respectively equipped with the underframe Bearing and the non-transmision end bearing are separately positioned on the transmission end bearing block and the non-transmision end bearing block.

Further, the transmission end bearing and the non-transmision end bearing are four oily leaf watt A seating sliding bearings.

Alternatively, the sliding bearing replaces with rolling bearing.

Alternatively, the sliding bearing replaces with magnetic suspension bearing.

Further, the cooling device is air blower, and a hot blast blast pipe connects the rear table of the casing of the stator Air grid on face.

Further, the stator interior is provided with uniform radial ducts.

Further, main junction box, heater connection box and auxiliary are disposed with the upper surface of the casing of stator Adjuvant grafting line box.

A kind of ultrahigh speed asynchronous motor of the present utility model, is set from high notch Stamped steel type rotor, and on rotor Balancing frame, from A seating sliding bearing, and opens up air grid in stator casing both sides and is cooled down by cooling device, leads to Optimal Structure Designing is crossed so that ultrahigh speed asynchronous motor of the present utility model meets the motor under the high rotating speed of high power capacity It can require, and grasp the key technology of the design of ultrahigh speed asynchronous machine based on this and develop difficult point, be follow-up more great Rong The more high-revolving ultrahigh speed asynchronous machine development of amount is laid the groundwork.

Brief description of the drawings

Fig. 1 is a kind of structural representation of ultrahigh speed asynchronous motor of the present utility model.

Embodiment

In order to be able to preferably understand the technical solution of the utility model, below by specifically embodiment and combine Accompanying drawing is described in detail：

Referring to Fig. 1, a kind of ultrahigh speed asynchronous motor of the present utility model, including underframe 1, and it is arranged on underframe 1 On stator 5, the driving end support of bearing 2 and the non-transmision end support of bearing 10.Driving end axle is provided with the driving end support of bearing 2 3 are held, non-transmision end bearing 9 is provided with the non-transmision end support of bearing 10, rotor 4 is passed through after stator 5 respectively to be driven end bearing 3 It is support with non-transmision end bearing 9.

Each parts are that the performance for meeting ultrahigh speed asynchronous machine needs following structure and design requirement.

Rotor 4 uses Stamped steel type rotor, and its component including punching, sliver, end ring, retaining ring uses high-strength material Such as silicon steel sheet, so that the centrifugal force under rotating at a high speed can be born；The iron core of rotor 4 is coordinated with axle using the big magnitude of interference, it is ensured that Under hypervelocity operating mode, the iron core of rotor 4 keeps certain level with the footprint pressure of axle, and need not increase the fasteners such as screw, subtracts The small complexity of structure, adds stability of the structure when telling operation.Stamped steel type rotor selects high notch rotor, profit Ensure its cold and hot stability in high speed motions in rotor 4；Some balancing frames are provided with the axle body of the axle of rotor 4 41, in favor of entering action balance debugging in the full range of speeds to rotor 4.In ultrahigh speed asynchronous motor, Stamped steel type rotor Structure is in groove design, the selection of electric parameter, and the free degree is bigger, easily realizes preferable electric property and heat endurance. Meanwhile, the processing of Stamped steel type rotor structure correlation, manufacturing process are ripe, and the manufacturing cycle is short, low cost, with solid rotor structure phase Than, with structure maturation, electric property is excellent, manufacture is convenient, low cost and other advantages,

On bearing, sliding bearing can be divided into end bracket type bearing and pedestal bearing on installation form.End bracket type bearing It is typically mounted at motor terminal to cover, support stiffness is poor, and the exciting force of stationary part is transmitted as readily to bearing, so as to influence The vibration characteristics of rotor-bearing system.Simultaneously as end bracket type bearing motor internal sealing ring usually because negative pressure and Rotating shaft high speed rotating seal ring poor sealing performance, easily occurs the phenomenon that bearing oil drains to motor interior.Therefore for Ultrahigh speed asynchronous motor of the present utility model, drive bearing 3 and non-drive bearing 9 select A seating sliding bearing.Led To be shaken including critical speed with Mode Shape analysis, critical speed map analysis, dynamic balancing response analysis, stability analysis and torsion After analysis is calculated in terms of dynamic analysis, on the premise of use requirement is met, price factor is weighed, the present embodiment has selected four oil Leaf watt A seating sliding bearing.It is pointed out that the equally optional rolling bearing of drive bearing 3 and non-drive bearing 9 or magnetcisuspension Floating axle is held, but both bearing controls are complicated, and expensive, cost performance is not high.

Opened respectively on the cooling requirements of ultrahigh speed asynchronous motor, the preceding surface and rear surface of the casing of stator 5 to reach Provided with air grid, cooling device connector 11, drum are provided with close to the side of non-transmision end bearing on the preceding surface of the casing of stator 5 Blower fan is connected by cooling device connector with the preceding surface of the casing of stator 5, the case of hot blast blast pipe one end connecting stator Air grid on the rear surface of body, other end connection air exhauster.Wind is cooled down from the air grid on the preceding surface of stator 5 to enter, Motor internal is carried out after heat exchange, and hot-air is extracted out from the air grid on rear surface, and is discharged to hot blast at a distance by pipeline.It is fixed The inside of son 5 is provided with uniform radial ducts, and cooling airflow is after stator 5, the part cooling end turn of stator 5, a part By stator 5 and the air gap of rotor 4, the cooling surface of rotor 4 and stator core.Rotor 4 is high notch design, increases cooling wind The surface area of ventilation when flowing through the surface unshakable in one's determination of rotor 4 and notch, enhances cooling effect.Then cool down radial direction of the wind through stator Ventilating duct flows out.

Vibration limit value requirement when being used for the speed adjustable range motor of the high rotating speed of arrival, broadness, of the present utility model turn Son 4 is immunity rotor structure, and first critical speed is in the range of running speed, and second-order critical speed has avoided highest operation Rotating speed.Speed adjustable range is 180-8200rpm, qualified to ensure the vibration limit value in the full range of speeds, it is necessary to improve whole rotor Structure precision and dynamic balance accuracy grade.Many places balancing frame 41 is set on rotor 4, in order to the dynamic balancing in the full range of speeds Debugging.

Main junction box 6, heater connection box 7 and assistant junction box are disposed with the upper surface of the casing of stator 5 8, provide electric power for whole system.

Those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to illustrate that this practicality is new Type, and be not used as limiting of the present utility model, as long as in spirit of the present utility model, to the above The change of embodiment, modification will all fall in Claims scope of the present utility model.

Claims (8)

1. a kind of ultrahigh speed asynchronous motor, including underframe, and the stator, transmission end bearing, non-drive being arranged on underframe End bearing and rotor, the rotor are passed through after the stator respectively using the transmission end bearing and the non-transmision end bearing as branch Support, it is characterised in that：

The rotor uses Stamped steel type rotor, and iron core and the axle of the rotor are coordinated using the big magnitude of interference, the Stamped steel type rotor For high notch rotor；Some balancing frames are provided with the axle body of the axle of the rotor；

The transmission end bearing and the non-transmision end bearing use sliding bearing；

Offered respectively on the preceding surface and rear surface of the casing of the stator on air grid, the preceding surface of the stator casing Cooling device connector is provided with close to the side of the non-transmision end bearing, cooling device passes through cooling device connector and stator Casing preceding surface connection.

2. a kind of ultrahigh speed asynchronous motor according to claim 1, it is characterised in that be respectively equipped with the underframe End bearing block and non-transmision end bearing block are driven, the transmission end bearing and the non-transmision end bearing are separately positioned on the biography On moved end bearing block and the non-transmision end bearing block.

3. a kind of ultrahigh speed asynchronous motor according to claim 2, it is characterised in that the transmission end bearing and described Non-transmision end bearing is four oily leaf watt A seating sliding bearings.

4. a kind of ultrahigh speed asynchronous motor according to claim 1, it is characterised in that the sliding bearing replaces with rolling Dynamic bearing.

5. a kind of ultrahigh speed asynchronous motor according to claim 1, it is characterised in that the sliding bearing replaces with magnetic Suspension bearing.

6. a kind of ultrahigh speed asynchronous motor according to claim 1, it is characterised in that the cooling device is air blast Air grid on machine, the rear surface for the casing that a hot blast blast pipe connects the stator.

7. a kind of ultrahigh speed asynchronous motor according to claim 1, it is characterised in that the stator interior is provided with uniform Radial ducts.

8. a kind of ultrahigh speed asynchronous motor according to claim 1-7 any one, it is characterised in that in the case of stator Main junction box, heater connection box and assistant junction box are disposed with the upper surface of body.