CN110649776A - High-power high-pressure high-efficiency three-phase asynchronous motor with multiple poles - Google Patents

High-power high-pressure high-efficiency three-phase asynchronous motor with multiple poles Download PDF

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Publication number
CN110649776A
CN110649776A CN201911086636.1A CN201911086636A CN110649776A CN 110649776 A CN110649776 A CN 110649776A CN 201911086636 A CN201911086636 A CN 201911086636A CN 110649776 A CN110649776 A CN 110649776A
Authority
CN
China
Prior art keywords
extension end
shaft extension
shaft
rotor
end cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911086636.1A
Other languages
Chinese (zh)
Inventor
杨翠
姚金艳
孙庆玲
王伟
张明娟
杨志强
郝满满
王乾
潘春生
顾秀珍
吕志远
孙凯华
张倩
王鑫成
陈德波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wolong Electric Drive Group Co Ltd
Wolong Electric Nanyang Explosion Protection Group Co Ltd
Original Assignee
Wolong Electric Drive Group Co Ltd
Wolong Electric Nanyang Explosion Protection Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wolong Electric Drive Group Co Ltd, Wolong Electric Nanyang Explosion Protection Group Co Ltd filed Critical Wolong Electric Drive Group Co Ltd
Priority to CN201911086636.1A priority Critical patent/CN110649776A/en
Publication of CN110649776A publication Critical patent/CN110649776A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/12—Asynchronous induction motors for multi-phase current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/30—Structural association of asynchronous induction motors with auxiliary electric devices influencing the characteristics of the motor or controlling the motor, e.g. with impedances or switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/04—Balancing means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft

Abstract

The invention provides a multipole high-power high-voltage high-efficiency three-phase asynchronous motor which comprises a base, a stator core with windings, a rotor, a shaft extension end bearing device, a non-shaft extension end bearing device, a shaft extension end cover, a non-shaft extension end cover, a support, a junction box and an outer fan, wherein the outer fan is sleeved at the non-shaft extension end of a rotating shaft and is arranged outside the base; the outer side of the outer fan is also covered with an end shield, and a filter screen for ventilation is arranged on the end shield; according to the invention, through the arrangement of the external fan, cooling air flow can be blown into the heat dissipation ribs of the base, and the cooling air flow flows from the non-shaft-extension end of the motor to the shaft-extension end through the heat dissipation channel, so that the heat dissipation efficiency of the motor during action is ensured; the invention adopts the rotor balance structure, the rotor balance structure has simple structure, simple and convenient installation and operation, high efficiency and stable and reliable balance ring fixation, and can effectively ensure the balance stability of the pressing ring during high-speed rotation.

Description

High-power high-pressure high-efficiency three-phase asynchronous motor with multiple poles
Technical Field
The invention relates to the field of motors, in particular to a multi-pole high-power high-voltage high-efficiency three-phase asynchronous motor.
Background
The traditional compact multi-pole high-power high-voltage high-efficiency three-phase asynchronous motor mostly adopts a cast iron base, a shuttle coil, a cast aluminum rotor and a welded rib shaft, but the temperature rise, the efficiency and the noise control difficulty of the motor are very high along with the increasingly small requirement of the market on the overall dimension of the motor and the increasingly high requirement on the capacity.
Disclosure of Invention
The invention aims to provide a multi-pole high-power high-voltage high-efficiency three-phase asynchronous motor, which not only gives consideration to the heat dissipation of the motor and improves the power, but also reduces the noise of the motor.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multi-pole high-power high-pressure high-efficiency three-phase asynchronous motor comprises a machine base, a stator core with windings, a rotor, a shaft extension end bearing device, a non-shaft extension end bearing device, a shaft extension end cover, a non-shaft extension end cover, a support and a junction box, wherein the stator core with windings is arranged in the machine base, the rotor is fixedly arranged on a rotating shaft and is in clearance fit with the stator, the shaft extension end of the motor is in fit installation with the machine base through the shaft extension end cover, the shaft extension end cover fixedly connected with the machine base is arranged outside the shaft extension end bearing device, the non-shaft extension end of the motor is in fit installation with the machine base through the non-shaft extension end cover, the non-shaft extension end cover fixedly connected with the machine base is arranged outside the non-shaft extension end bearing device, the support is fixed above the shaft extension end of the machine base, a lead fixing plate of a motor temperature measuring element and a heater element, a temperature measuring junction box and a heater junction box are arranged on the side surface; the outer fan is arranged at the non-shaft-extending end of the rotating shaft and is arranged outside the base; an end shield is arranged outside the outer fan, and a filter screen for ventilation is arranged on the end shield; the base is provided with a plurality of radiating ribs, and the channels between adjacent radiating ribs form axial radiating channels.
The shaft extension end bearing device is matched with the end cover through a shaft through structure, and the end cover is matched with the machine base.
The shaft through structure comprises a bearing inner cover and an oil slinger; a sealing groove is formed in the position, corresponding to the inner bearing cover, on the inner side of the end cover of the shaft extension end, a sealing ring is arranged in the sealing groove, the inner bearing cover is fixedly connected with the end cover of the shaft extension end, and a plurality of rings of grooves are formed in the inner hole, matched with the rotating shaft, of the inner bearing cover; a lubricating oil cavity is formed between the shaft extension end cover and the bearing, an oil slinger is arranged in the lubricating oil cavity, and a V-shaped ring is further arranged outside the shaft extension end cover.
And a rotor balance structure is arranged on the rotor pressing ring of the rotor.
The rotor balance structure comprises an annular balance groove formed in the side face of the rotor pressing ring and a balance ring arranged in the balance groove, and the balance ring is arranged in the balance groove through a fastening screw.
The rotor is a copper bar rotor.
The invention has the beneficial effects that:
according to the multipole-number high-power high-voltage high-efficiency three-phase asynchronous motor, the cooling air flow can be blown into the heat dissipation ribs of the base through the arrangement of the external fan, and flows from the non-shaft extension end to the shaft extension end of the motor through the heat dissipation channel, so that the heat dissipation efficiency of the motor during action is ensured.
The multipole-number high-power high-voltage high-efficiency three-phase asynchronous motor adopts a rotor balance structure, the rotor balance structure has a simple structure, is simple and convenient to install and operate, has high efficiency, is stable and reliable in balance ring fixation, and can effectively guarantee the balance stability of a pressing ring during high-speed rotation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partially enlarged view of the portion A of FIG. 1;
fig. 3 is a schematic structural diagram of a rotor balancing structure according to the present invention.
Detailed Description
As shown in fig. 1: the invention relates to a multipole high-power high-voltage high-efficiency three-phase asynchronous motor, which comprises a machine base 1, a stator core 2 with windings, a rotor 3, a shaft extension end bearing device 5, a non-shaft extension end bearing device 6, a shaft extension end cover 7, a non-shaft extension end cover 8, a support 9 and a junction box 10, wherein the stator core 2 with the windings is arranged in the machine base 1, the rotor 3 is fixedly arranged on a rotating shaft 4 and is in clearance fit with the stator core 2 with the windings, the shaft extension end of the motor is matched and arranged with the machine base 1 through the shaft extension end bearing device 5, the shaft extension end cover 7 fixedly connected with the machine base 1 is arranged outside the shaft extension end bearing device 5, the non-shaft extension end of the motor is matched and arranged with the machine base 1 through the non-shaft extension end bearing device 6, the non-shaft extension end cover 8 fixedly connected with the machine base 1 is arranged outside the non-shaft extension end bearing device 6, the support 9 is fixedly arranged above the machine base 1 at the shaft extension end of, the junction box 10 is fixedly arranged above the base 1 and used for realizing electrical connection; the fan assembly further comprises an outer fan 11, wherein the outer fan 11 is sleeved at the non-shaft-extending end of the rotating shaft 4 and is arranged outside the base 1; an end cover 12 is covered outside the outer fan 11, and a filter screen for ventilation is arranged on the end cover 12; gaps between the radiating ribs of the base 1 and the stator core 2 with the winding form radiating channels; when the motor works, the outer fan 11 acts along with the action of the rotating shaft 4, blows cooling air flow into the heat dissipation ribs on the outer side of the base 1, and enables the cooling air flow to flow from the non-shaft-extension end of the motor to the shaft-extension end through the heat dissipation channel, so that the heat dissipation efficiency of the motor during action is ensured; furthermore, a special ventilation channel is not arranged in the base 1, so that the compactness of the base 1 is ensured.
As shown in fig. 2: the preferred scheme is as follows: the shaft extension end bearing device 5 is matched and installed with the machine base 1 through a shaft through structure; further: the shaft through structure comprises a bearing inner cover 14 and an oil slinger 16; a sealing groove is formed in the position, corresponding to the inner bearing cover 14, of the inner side of the shaft extension end cover 7 above the bearing 13, a sealing ring is arranged in the sealing groove, the inner bearing cover 14 is fixedly connected with the shaft extension end cover 7, and a plurality of rings of grooves 18 are formed in the inner hole of the inner bearing cover 14 matched with the rotating shaft 4; a lubricating oil cavity is formed between the shaft extension end cover 7 and the bearing 13, an oil slinger 16 is arranged in the lubricating oil cavity, and a V-shaped ring 17 is arranged outside the shaft extension end cover 7; not only can prevent lubricating oil in the lubricating oil cavity from leaking to influence the performance of the motor, but also can prevent external water, dust and other easily permeable substances from entering the motor base 1 through the shaft extension end, thereby improving the waterproof and dustproof performance of the motor.
Further, the non-shaft-extension-end bearing device 6 is also installed in a matching manner with the machine base 1 through a shaft through structure.
As shown in fig. 3: the preferred scheme is as follows: a rotor 3 balance structure is arranged on a rotor pressing ring 19 of the rotor 3; further: the rotor 3 balance structure comprises an annular balance groove formed in the side surface of the rotor pressing ring 19 and a balance ring 20 arranged in the balance groove, and the balance ring 20 is arranged in the balance groove through a fastening screw 21; the rotor 3 has a balance structure, is simple in structure, simple and convenient to install and operate, high in efficiency, and stable and reliable in fixation of the balance ring 20, and can effectively guarantee the balance stability of the pressing ring during high-speed rotation; furthermore, the vibration of the motor rotor 3 is reduced, and the noise generated during the action of the motor is effectively reduced.
The preferred scheme is as follows: the rotor 3 is a copper bar rotor 3; copper bar rotor 3 can use the copper bar of different resistivities according to the different requirements to starting torque and starting current, simultaneously, because the resistivity of copper is less than aluminium, 3 slots cross sectional areas of rotor that consequently use are the same time, and copper bar rotor 3's resistance is littleer to can effectual reduction rotor 3 losses, raise the efficiency and reduce the temperature rise.
According to the multipole-number high-power high-voltage high-efficiency three-phase asynchronous motor, the cooling air flow can be blown into the heat dissipation ribs of the base 1 through the arrangement of the outer fan 11, and flows from the non-shaft extension end to the shaft extension end of the motor through the heat dissipation channel, so that the heat dissipation efficiency of the motor during action is ensured.
The multipole-number high-power high-voltage high-efficiency three-phase asynchronous motor adopts the rotor 3 balance structure, the rotor 3 balance structure has simple structure, simple and convenient installation and operation and high efficiency, the balance ring 20 is fixed stably and reliably, and the balance stability of the pressing ring during high-speed rotation can be effectively ensured.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (6)

1. A high-power high-pressure high-efficient three-phase asynchronous motor of multipolar number which characterized in that: a multi-pole high-power high-pressure high-efficiency three-phase asynchronous motor comprises a machine base, a stator core with windings, a rotor, a shaft extension end bearing device, a non-shaft extension end bearing device, a shaft extension end cover, a non-shaft extension end cover, a support and a junction box, wherein the stator core with windings is arranged in the machine base, the rotor is fixedly arranged on a rotating shaft and is in clearance fit with the stator, the shaft extension end of the motor is in fit installation with the machine base through the shaft extension end cover, the shaft extension end cover fixedly connected with the machine base is arranged outside the shaft extension end bearing device, the non-shaft extension end of the motor is in fit installation with the machine base through the non-shaft extension end cover, the non-shaft extension end cover fixedly connected with the machine base is arranged outside the non-shaft extension end bearing device, the support is fixed above the shaft extension end of the machine base, a lead fixing plate of a motor temperature measuring element and a heater element, a temperature measuring junction box and a heater junction box are arranged on the side surface; the method is characterized in that: the outer fan is arranged at the non-shaft-extending end of the rotating shaft and is arranged outside the base; an end shield is arranged outside the outer fan, and a filter screen for ventilation is arranged on the end shield; the base is provided with a plurality of radiating ribs, and the channels between adjacent radiating ribs form axial radiating channels.
2. The multi-pole high-power high-voltage high-efficiency three-phase asynchronous motor according to claim 1, characterized in that: the shaft extension end bearing device is matched with the shaft extension end cover through a shaft through structure, and the shaft extension end cover is matched with the machine base.
3. The multi-pole high-power high-voltage high-efficiency three-phase asynchronous motor according to claim 2, characterized in that: the shaft through structure comprises a bearing inner cover and an oil slinger; a sealing groove is formed in the position, corresponding to the inner bearing cover, on the inner side of the end cover of the shaft extension end, a sealing ring is arranged in the sealing groove, the inner bearing cover is fixedly connected with the end cover of the shaft extension end, and a plurality of rings of grooves are formed in the inner hole, matched with the rotating shaft, of the inner bearing cover; a lubricating oil cavity is formed between the shaft extension end cover and the bearing, an oil slinger is arranged in the lubricating oil cavity, and a V-shaped ring is further arranged outside the shaft extension end cover.
4. The multi-pole high-power high-voltage high-efficiency three-phase asynchronous motor according to claim 1, characterized in that: and a rotor balance structure is arranged on the rotor pressing ring of the rotor.
5. The multi-pole high-power high-voltage high-efficiency three-phase asynchronous motor according to claim 4, characterized in that: the rotor balance structure comprises an annular balance groove formed in the side face of the rotor pressing ring and a balance ring arranged in the balance groove, and the balance ring is arranged in the balance groove through a fastening screw.
6. The multi-pole high-power high-voltage high-efficiency three-phase asynchronous motor according to claim 1, characterized in that: the rotor is a copper bar rotor.
CN201911086636.1A 2019-11-08 2019-11-08 High-power high-pressure high-efficiency three-phase asynchronous motor with multiple poles Pending CN110649776A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911086636.1A CN110649776A (en) 2019-11-08 2019-11-08 High-power high-pressure high-efficiency three-phase asynchronous motor with multiple poles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911086636.1A CN110649776A (en) 2019-11-08 2019-11-08 High-power high-pressure high-efficiency three-phase asynchronous motor with multiple poles

Publications (1)

Publication Number Publication Date
CN110649776A true CN110649776A (en) 2020-01-03

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ID=69014296

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Application Number Title Priority Date Filing Date
CN201911086636.1A Pending CN110649776A (en) 2019-11-08 2019-11-08 High-power high-pressure high-efficiency three-phase asynchronous motor with multiple poles

Country Status (1)

Country Link
CN (1) CN110649776A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022144088A1 (en) * 2020-12-30 2022-07-07 Sew-Eurodrive Gmbh & Co. Kg Electric motor having a stator housing and a rotor shaft

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022144088A1 (en) * 2020-12-30 2022-07-07 Sew-Eurodrive Gmbh & Co. Kg Electric motor having a stator housing and a rotor shaft

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