CN202309265U - Explosion-proof ultrahigh-efficiency three-phase asynchronous motor with cast copper rotor - Google Patents
Explosion-proof ultrahigh-efficiency three-phase asynchronous motor with cast copper rotor Download PDFInfo
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- CN202309265U CN202309265U CN2011204221429U CN201120422142U CN202309265U CN 202309265 U CN202309265 U CN 202309265U CN 2011204221429 U CN2011204221429 U CN 2011204221429U CN 201120422142 U CN201120422142 U CN 201120422142U CN 202309265 U CN202309265 U CN 202309265U
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- 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
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/136—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas explosion-proof
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Abstract
The utility model relates to an explosion-proof ultrahigh-efficiency three-phase asynchronous motor with a cast copper rotor. The explosion-proof ultrahigh-efficiency three-phase asynchronous motor with the cast copper rotor comprises a rotor, a stator, outer bearing covers, bearings, inner bearing covers, end covers, a pedestal and a terminal box, wherein two ends of a rotating shaft in the rotor are installed on the end covers through bearings; the inner bearing cover and the outer bearing cover are arranged on two sides of each bearing respectively; the rotor is a cast copper rotor; a rotor iron core in the cast copper rotor is formed by laminating rotor laminations with the same size and shape; guiding strip holes are uniformly distributed at the periphery of the each rotor lamination; the guiding strip holes in each rotor lamination are laminated to form a guiding strip slot in the rotor iron core; a copper guiding strip is cast in the guiding strip slot; copper end rings are arranged at two ends of the rotor iron core; the copper end rings and the copper guiding strip are cast and connected together; and a cavity formed by each outer bearing cover, each bearing, each inner bearing cover, each end cover and the pedestal is a sealed explosion-proof cavity. The explosion-proof ultrahigh-efficiency three-phase asynchronous motor with the cast copper rotor, provided by the utility model, has high reliability and efficiency.
Description
Technical field:
The utility model relates to a kind of motor, particularly relates to a kind of flame-proof type ultra-high efficiency copper casting rotor threephase asynchronous.
Background technology:
Traditional explosion-proof motor rotor structure has two kinds: a kind of is the aluminium rotor structure, and aluminium ingot heating back is driven in the rotor punching that laminates through die casting machine, and die casting forms end ring, balance columns and blade structure at the two ends of rotor core simultaneously; This structure is very general in middle and small motor.Because of the resistivity of aluminium is 0.0434 Europe * millimeter
2/ rice, the resistivity of copper is 0.0217 Europe * millimeter
2/ rice, the high more expression resistance of resistivity is high more, and the loss of electric machine is also high more, and at the miniature motor to Ultra-High Efficiency and the requirement of ultra Ultra-High Efficiency level, rotor bar uses aluminum strip will be difficult to guarantee that the level of efficiency of motor reaches corresponding index.The density of aluminium is littler than copper, and aluminum strip is prone to down produce disconnected bar phenomenon in abominable load, influences the normal operation of motor, and therefore, to the higher place of reliability requirement such as aircraft, boat, nuclear power war products, the risk of bearing of use aluminium rotor electric machine is higher relatively.
Another kind is the copper bar rotor structure, after promptly copper bar is worked into definite shape and size, through extrusion process copper bar is squeezed in the rotor core, closely cooperates with rotor slot shape, and the copper end ring is connected through welding manner with copper bar.The welding quality of the degree that this structure cooperates with rotor slot shape copper bar, end ring and sliver requires very high, otherwise will cause the play of copper bar in groove, the phenomenon of sealing-off, brings hidden danger for the motor long-time running, and the reliability standard of this kind copper bar rotor is low.
At present; The efficient of the flameproof motor that petrochemical enterprise in China adopted is generally low; Mostly maintain the level of efficiency of international efficiency standard I E1 (IEC60034-30:Standard Efficiency), because the generally operation all the year round of this kind motor, inefficiency causes power consumption high; Power consumption is quite surprising, does not meet the market demands of current low-carbon economy.
The utility model content:
The technical problem that the utility model will solve is: overcome the defective of prior art, a kind of good reliability, flame-proof type ultra-high efficiency copper casting rotor threephase asynchronous that efficient is high are provided.
The technical scheme of the utility model:
A kind of flame-proof type ultra-high efficiency copper casting rotor threephase asynchronous; Contain rotor, stator, bearing end cover, bearing, internal bearing cover, end cap, support, terminal box, rotor and stator are arranged in the support, and end cap is arranged on the two ends of support; Bearing Installation is passed through on end cap in the two ends of the rotating shaft in the rotor; Internal bearing cover and bearing end cover are separately positioned on the both sides of bearing, and internal bearing cover is positioned at support, and bearing end cover is positioned at outside the support; And bearing end cover is connected with end cap through bolt with internal bearing cover, and terminal box is arranged on the outside of support; Rotor is a copper casting rotor, and the rotor core in the copper casting rotor is overrided to form by the identical rotor punching of a certain number of size shape, and the middle part of rotor punching is provided with axis hole; Rotating shaft is installed in the axis hole; Be evenly equipped with a certain number of sliver hole around the rotor punching, the sliver hole phase poststack in each rotor punching is linked to be the sliver groove in the rotor core, and die casting has the copper sliver in the sliver groove; The two ends of rotor core are provided with the copper end ring, and copper end ring and the die casting of copper sliver link together; The cavity that is made up of bearing end cover, bearing, internal bearing cover, end cap and support is an airtight flame proof cavity.
End at an end of rotating shaft is provided with fan, and fan is positioned at the outside of bearing end cover, and the outside of fan is provided with the fan housing that covers fan.
The sealing flame proof is connected between internal bearing cover and the end cap; The sealing flame proof is connected between internal bearing cover and the bearing; The sealing flame proof is connected between internal bearing cover and the rotating shaft, and the sealing flame proof is connected between bearing and the end cap, seals flame proof between end cap and the support and is connected; The sealing flame proof is connected between terminal box and the support, and the communication passage place that is used to walk cable between terminal box and the support is filled with explosive-proof sealed glue.
This flame-proof type ultra-high efficiency copper casting rotor threephase asynchronous connects part at axle and has adopted the explosion suppresion surface fit structure, adopts the explosion suppresion surface fit structure between support and the terminal box.
Support is the tubular structure of sealing explosion-proof chamber, and the two ends of support are provided with explosion insulation shell, and end cap cooperates the formation explosion suppresion surface with the faying face of support.
Rotor punching be shaped as circle; Sliver hole on the rotor punching is the combination bore of strip through hole and manhole; One of the strip through hole big, the other end is little, the strip through hole is along the diametric(al) setting of rotor punching, the major part of strip through hole is positioned at the outside of rotor punching annular circumferential; The microcephaly of strip through hole is positioned at the inboard of rotor punching annular circumferential; Manhole is arranged on the outside of strip through hole major part, and the major part of strip through hole and manhole are communicated with through a narrow joint gap, and the width of narrow joint gap is less than the width of strip through hole and the diameter of manhole.
The area of strip through hole is greater than the area of manhole.
On the outer face of copper end ring and along the diametric(al) of copper end ring, be evenly equipped with a certain number of raised item or groove.
The quantity of raised item or groove is 6, or is 8, or is 10, or is 12.
The axis hole of rotor punching is provided with keyway, and the key in the rotating shaft is arranged in keyway.
The material of rotor punching is a silicon steel sheet; The quantity in the sliver hole on each rotor punching is 26～56.
The beneficial effect of the utility model:
1, the copper casting rotor of the utility model with copper sliver and the die casting of copper end ring together; Realized the integral structure of rotor bar and end ring; The reliability and the useful life of rotor are improved greatly, be highly suitable for the place higher reliability requirement.
2, the utility model has adopted the strong copper of conductivity to make the sliver and the end ring of rotor, can improve the efficiency of motor level greatly, and efficient can reach the Ultra-High Efficiency level of IE3 (IEC60034-30:Premium Efficiency).
3, the utility model has carried out optimal design to the sliver hole on the rotor punching, can improve the stall performance of motor, remedies to adopt copper product to make behind the rotor because of the low defective that causes the stall decreased performance of resistivity.Sliver hole on the rotor punching makes the sliver in the rotor core be divided into cage sliver (manhole by in the sliver hole forms), following cage sliver (the strip through hole by in the sliver hole forms) reaches the slit (the narrow joint gap by in the sliver hole forms) between the cage up and down; Last cage sliver sectional area hour; Can produce bigger starting torque during electric motor starting, when following cage sliver sectional area was big, resistance was little; Revolutional slip is low, the electromagnetic torque when producing normal the operation; The utility model makes the stall performance of rotor reach optimum through changing the physical dimension in upper and lower cage sliver cross section and the width of the narrow joint gap between the upper and lower cage sliver cross section flexibly.
4, the surface of the copper end ring of the copper casting rotor of the utility model is evenly equipped with a certain number of raised item or groove; When rotor rotation, the copper end ring can play the effect of heat radiation fan blade, can save the design of heat radiation fan blade; Also reduce the use amount of copper simultaneously, reduced the cost of rotor.
5, the bearing end cover of the utility model, bearing, internal bearing cover, end cap and support constitute the cavity of an airtight flame proof, therefore, the utility model explosion-proof, explosion insulation performance good, be very suitable for various inflammable, explosive occasions and use.
Description of drawings:
Fig. 1 is the structural representation of flame-proof type ultra-high efficiency copper casting rotor threephase asynchronous;
The structural representation that Fig. 2 looks for Fig. 1 left side;
Fig. 3 is the structure for amplifying sketch map of copper casting rotor;
Fig. 4 is the A-A sectional structure sketch map among Fig. 3;
Fig. 5 is the structure for amplifying sketch map of rotor punching;
Fig. 6 is the perspective view of copper casting rotor.
Embodiment:
Referring to Fig. 1～Fig. 6, among the figure, flame-proof type ultra-high efficiency copper casting rotor threephase asynchronous contains rotor 12, stator 11, bearing end cover 17, bearing 19, internal bearing cover 16, end cap 15, support 13, terminal box 14; Rotor 12 is arranged in the support 13 with stator 11; End cap 15 is arranged on the two ends of support 13, and the two ends of the rotating shaft 18 in the rotor 12 are installed on the end cap 15 through bearing 19, and internal bearing cover 16 and bearing end cover 17 are separately positioned on the both sides of bearing 19; Internal bearing cover 16 is positioned at support 13; Bearing end cover 17 is positioned at outside the support 13, and bearing end cover 17 is connected with end cap 15 through bolt 22 with internal bearing cover 16, and terminal box 14 is arranged on the outside of support 13; Rotor 12 is a copper casting rotor, and the rotor core 1 in the copper casting rotor is overrided to form by the identical rotor punching 2 of a certain number of size shape, and the middle part of rotor punching 2 is provided with axis hole 3; Rotating shaft 18 is installed in the axis hole 3; Be evenly equipped with 44 sliver holes around the rotor punching 2, the sliver hole phase poststack in each rotor punching 2 is linked to be the sliver groove in the rotor core 1, and die casting has copper sliver 10 in the sliver groove; The two ends of rotor core 1 are provided with copper end ring 8, and copper end ring 8 links together with 10 die casting of copper sliver; The cavity that is made up of bearing end cover 17, bearing 19, internal bearing cover 16, end cap 15 and support 13 is an airtight flame proof cavity.
End at an end of rotating shaft 18 is provided with fan 20, and fan 20 is positioned at the outside of bearing end cover 17, wind
The outside of fan 20 is provided with the fan housing 21 that covers fan 20.
The sealing flame proof is connected between internal bearing cover 16 and the end cap 15; The sealing flame proof is connected between internal bearing cover 16 and the bearing 19; The sealing flame proof is connected between internal bearing cover 16 and the rotating shaft 18, seals flame proof between bearing 19 and the end cap 15 and is connected, and seals flame proof between end cap 15 and the support 13 and is connected; The sealing flame proof is connected between terminal box 14 and the support 13, and the communication passage place that is used to walk cable 24 between terminal box 14 and the support 13 is filled with explosive-proof sealed glue 23.
The area of strip through hole 5 is greater than the area of manhole 4.
On the outer face of copper end ring 8 and along the diametric(al) of copper end ring 8, be evenly equipped with 10 grooves 9.
The axis hole 3 of rotor punching 2 is provided with keyway 7, and the key in the rotating shaft 18 is arranged in keyway 7.
The material of rotor punching 2 is 50WW470 or 50WW350 silicon steel sheet.
Claims (9)
1. flame-proof type ultra-high efficiency copper casting rotor threephase asynchronous; Contain rotor, stator, bearing end cover, bearing, internal bearing cover, end cap, support, terminal box, rotor and stator are arranged in the support, and end cap is arranged on the two ends of support; Bearing Installation is passed through on end cap in the two ends of the rotating shaft in the rotor; Internal bearing cover and bearing end cover are separately positioned on the both sides of bearing, and internal bearing cover is positioned at support, and bearing end cover is positioned at outside the support; And bearing end cover is connected with end cap through bolt with internal bearing cover, and terminal box is arranged on the outside of support; It is characterized in that: rotor is a copper casting rotor, and the rotor core in the copper casting rotor is overrided to form by the identical rotor punching of a certain number of size shape, and the middle part of rotor punching is provided with axis hole; Rotating shaft is installed in the axis hole; Be evenly equipped with a certain number of sliver hole around the rotor punching, the sliver hole phase poststack in each rotor punching is linked to be the sliver groove in the rotor core, and die casting has the copper sliver in the sliver groove; The two ends of rotor core are provided with the copper end ring, and copper end ring and the die casting of copper sliver link together; The cavity that is made up of bearing end cover, bearing, internal bearing cover, end cap and support is an airtight flame proof cavity.
2. flame-proof type ultra-high efficiency copper casting rotor threephase asynchronous according to claim 1 is characterized in that: the end at an end of said rotating shaft is provided with fan, and fan is positioned at the outside of bearing end cover, and the outside of fan is provided with the fan housing that covers fan.
3. flame-proof type ultra-high efficiency copper casting rotor threephase asynchronous according to claim 1; It is characterized in that: the sealing flame proof is connected between said internal bearing cover and the end cap; The sealing flame proof is connected between internal bearing cover and the bearing; The sealing flame proof is connected between internal bearing cover and the rotating shaft, and the sealing flame proof is connected between bearing and the end cap, seals flame proof between end cap and the support and is connected; The sealing flame proof is connected between terminal box and the support, and the communication passage place that is used to walk cable between terminal box and the support is filled with explosive-proof sealed glue.
4. flame-proof type ultra-high efficiency copper casting rotor threephase asynchronous according to claim 1; It is characterized in that: said rotor punching be shaped as circle; Sliver hole on the rotor punching is the combination bore of strip through hole and manhole; One of the strip through hole big, the other end is little, the strip through hole is along the diametric(al) setting of rotor punching, the major part of strip through hole is positioned at the outside of rotor punching annular circumferential; The microcephaly of strip through hole is positioned at the inboard of rotor punching annular circumferential; Manhole is arranged on the outside of strip through hole major part, and the major part of strip through hole and manhole are communicated with through a narrow joint gap, and the width of narrow joint gap is less than the width of strip through hole and the diameter of manhole.
5. flame-proof type ultra-high efficiency copper casting rotor threephase asynchronous according to claim 4, it is characterized in that: the area of said strip through hole is greater than the area of manhole.
6. flame-proof type ultra-high efficiency copper casting rotor threephase asynchronous according to claim 1 is characterized in that: on the outer face of said copper end ring and along the diametric(al) of copper end ring, be evenly equipped with a certain number of raised item or groove.
7. flame-proof type ultra-high efficiency copper casting rotor threephase asynchronous according to claim 6 is characterized in that: the quantity of said raised item or groove is 6, or is 8, or is 10, or is 12.
8. flame-proof type ultra-high efficiency copper casting rotor threephase asynchronous according to claim 1, it is characterized in that: the axis hole of said rotor punching is provided with keyway, and the key in the rotating shaft is arranged in keyway.
9. flame-proof type ultra-high efficiency copper casting rotor threephase asynchronous according to claim 1 is characterized in that: the material of said rotor punching is a silicon steel sheet; The quantity in the sliver hole on each rotor punching is 26～56.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204221429U CN202309265U (en) | 2011-10-31 | 2011-10-31 | Explosion-proof ultrahigh-efficiency three-phase asynchronous motor with cast copper rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204221429U CN202309265U (en) | 2011-10-31 | 2011-10-31 | Explosion-proof ultrahigh-efficiency three-phase asynchronous motor with cast copper rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202309265U true CN202309265U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204221429U Expired - Lifetime CN202309265U (en) | 2011-10-31 | 2011-10-31 | Explosion-proof ultrahigh-efficiency three-phase asynchronous motor with cast copper rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202309265U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305697A (en) * | 2015-10-23 | 2016-02-03 | 费正华 | Explosion-proof motor |
| CN105429345A (en) * | 2015-12-14 | 2016-03-23 | 重庆市科诚电机制造有限公司 | Explosion-proof electric motor |
| CN106130235A (en) * | 2016-08-24 | 2016-11-16 | 深圳市德塔电动汽车科技有限公司 | A kind of mining explosion-proof type motor |
| CN106230193A (en) * | 2016-08-16 | 2016-12-14 | 中车永济电机有限公司 | Quarry tipper variable-frequency adjustable-speed asynchronous traction motor |
| EP2790301A3 (en) * | 2013-04-09 | 2017-11-08 | General Electric Company | Systems and methods for isolating a conduit enclosure using an adapter plate for an explosion proof motor |
-
2011
- 2011-10-31 CN CN2011204221429U patent/CN202309265U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2790301A3 (en) * | 2013-04-09 | 2017-11-08 | General Electric Company | Systems and methods for isolating a conduit enclosure using an adapter plate for an explosion proof motor |
| CN105305697A (en) * | 2015-10-23 | 2016-02-03 | 费正华 | Explosion-proof motor |
| CN105429345A (en) * | 2015-12-14 | 2016-03-23 | 重庆市科诚电机制造有限公司 | Explosion-proof electric motor |
| CN106230193A (en) * | 2016-08-16 | 2016-12-14 | 中车永济电机有限公司 | Quarry tipper variable-frequency adjustable-speed asynchronous traction motor |
| CN106130235A (en) * | 2016-08-24 | 2016-11-16 | 深圳市德塔电动汽车科技有限公司 | A kind of mining explosion-proof type motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |