CN206302244U - A kind of absolutely empty cold positive voltage type anti-explosion motor of 4 significant powers - Google Patents
A kind of absolutely empty cold positive voltage type anti-explosion motor of 4 significant powers Download PDFInfo
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- CN206302244U CN206302244U CN201621384504.9U CN201621384504U CN206302244U CN 206302244 U CN206302244 U CN 206302244U CN 201621384504 U CN201621384504 U CN 201621384504U CN 206302244 U CN206302244 U CN 206302244U
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Abstract
The utility model discloses a kind of absolutely empty cold positive voltage type anti-explosion motor of 4 significant power, including motor body and absolutely empty cooling system, motor body includes support, rotor and stator, wherein, stator includes stator core, winding coil and stator temperature element, rotor includes rotor core, armature spindle and rotor internal fan, support includes support plate in the middle of machine base outer shell and support, support plate is arranged inside machine base outer shell in the middle of support, support plate offers the stator hole matched with stator in the middle of support, and stator is fixed on base inner by stator hole；Rotor core includes rotor punching, and rotor punching periphery is uniformly disposed with multiple rotor punching grooves, and rotor punching groove is pyriform slot structure.The center that the utility model can reduce existing 4 extremely absolutely empty cold positive voltage type anti-explosion motor is high, and reduces cost while facilitating the maintenance and replacement of positive voltage type anti-explosion motor, and improves the efficiency of positive voltage type anti-explosion motor.
Description
Technical field
The utility model belongs to technical field of motors, more particularly to a kind of absolutely empty cold positive voltage type anti-explosion of 4 significant power is electronic
Machine.
Background technology
The existing a height of 560mm in center, number of poles are that 4 pole positive voltage type anti-explosion motor typically use case structure, according to cold
But mode can be divided into absolutely empty cold positive voltage type anti-explosion motor and air water cooling positive voltage type anti-explosion motor, compared to air water cooling positive pressure type
Fire-proof motor needs to put into cooling tower and water circulating pump, absolutely empty cooling positive voltage type anti-explosion motor, it is only necessary to be using natural wind
Motor can be cooled down, it is easy to maintenance because of small investment, increasingly favored by user.In oil, petrochemical industry that the national nineties starts
560mm a height of etc. the center of field of explosion application, number of poles are that 4 extremely absolutely empty cold positive voltage type anti-explosion motor are key equipment, mostly
Using the import fire-proof motor such as Siemens, ABB, because of center just, power is big for import fire-proof motor, and domestic electric machine producer is general very
Hardly possible meets, therefore, 4 extremely absolutely empty cold positive voltage type anti-explosion motors of and power high with center, the country is chronically at blank position；Together
When, import fire-proof motor is expensive, and efficiency is low（To efficiency no requirement (NR)）, complex structure, repair very bother.
Utility model content
The utility model is in order to solve the weak point that the absolutely empty box variable-frequency motor of cooling is present at present, there is provided a kind of 4 pole
High-power absolutely empty cold positive voltage type anti-explosion motor, the center for being used to reduce existing 4 extremely absolutely empty cold positive voltage type anti-explosion motor is high, drop
Low cost, while facilitating the maintenance and replacement of positive voltage type anti-explosion motor, and improves the efficiency of positive voltage type anti-explosion motor.
In order to solve the above technical problems, the utility model is adopted the following technical scheme that：A kind of absolutely empty cold malleation of 4 significant powers
Type flame-proof electric motor, including motor body and the absolutely empty cooling system on motor body, motor body include support, turn
Son and stator, wherein, stator includes stator core, winding coil and stator temperature element, and rotor includes rotor core, armature spindle
With rotor internal fan,
Support includes that support plate is arranged inside machine base outer shell in the middle of support plate in the middle of machine base outer shell and support, support, in support
Between support plate offer the stator hole matched with stator, stator is fixed on base inner by stator hole；
Machine base outer shell is the hollow cavity being made up of base plate, front end-plate, end plate, left plate, right plate and top board, preceding
The edge of support plate is by the uniform insertion of reinforced pipe no less than four and by front end-plate, end plate in the middle of end plate, end plate and support
It is connected to one with support plate in the middle of support；It is provided with purging pipeline in machine base outer shell, pipeline is U-shaped is fixed on outside support for purging
On the base plate of shell, and the U-shaped bottom is located at the axle stretch end of machine base outer shell, purges open at one end, one end closing and the body of pipeline
Upper arrangement is provided with lets out air port, and the opening end for purging pipeline is connected by the connecting tube through machine base outer shell with purging system；Machine
The top board of seat shell is located at axle stretch end and is provided with the air vent being connected with absolutely empty cooling system；
Rotor core includes rotor punching, and rotor punching periphery is uniformly disposed with multiple rotor punching grooves, rotor punching
Film trap is the pyriform slot structure that inner chamber is big, notch is small, and inner chamber to intracavity bottom is gradually smooth near notch one end from diminishing；
Absolutely empty cooling system includes being arranged on cooler above motor body and in cooler axially inside level
The multiple rows of multiple row cooling tube group for wearing, cooling tube group is in rectangular layout；The top of cooler is provided with exhaust outlet；Cooler is located at position
Non-shaft stretching end side is provided with air guide structure, air guide structure includes wind deflector and the external fan being arranged on armature spindle, exogenous wind
Fan positioned at armature spindle cushion cap outside, wind deflector cover at outside external fan and formed connection external fan and cooling tube group wind-guiding lead to
Road.
Deep bead is installed, deep bead is provided with relief hole between internal fan and stator core, rotor core.
Deep bead is made up of glass mat.
Stator temperature element in stator is drawn from the ventilating duct of stator core.
Silencer cover is covered with outside cooler.
Rotor internal fan is centrifugal internal fan, and rotor internal fan external diameter is 620mm.
A diameter of 170mm of the pedestal of armature spindle, bearing away from length be 2148mm.
The rotor bearing set on armature spindle cushion cap is rolling bearing, and the bearing (ball) cover of rolling bearing is cast iron, its thickness
It is 25mm.
Stator core includes stator punching, and stator punching external diameter is 1000mm, and rotor punching external diameter is 632mm, and support is high
It is 1190mm to spend, and support length is 2200mm.
The length of left plate and right plate is 2200mm in support, and the thickness of front end-plate and end plate is 30mm, base plate, a left side
Side plate and right side plate thickness are 8mm.
The beneficial effects of the utility model are：
By above-mentioned technical proposal, the utility model is successfully by the absolutely empty cold positive voltage type anti-explosion motor in 3000 kilowatts of 4 pole
Seat No. 560mm is reduced to by conventional 630mm, lightweight with small volume, efficiency high, the low product competition of noise is excellent
Gesture, while import motor can be replaced；The utility model reduces the center of existing 4 extremely absolutely empty cold positive voltage type anti-explosion motor
Height, reduces cost improves efficiency；Meanwhile, make the installation dimension and shaft extension of positive voltage type anti-explosion motor consistent with former import motor,
Facilitate the maintenance and replacement of positive voltage type anti-explosion motor, and improve the efficiency of positive voltage type anti-explosion motor.
Stator temperature element is drawn from stator core ventilating duct in the utility model, can avoid stator temperature element and
Winding coil discharges in ends contact.
Rotor punching groove is the pyriform slot structure that inner chamber is big, notch is small in the utility model, and inner chamber is by near notch one
Hold gradually to be smoothed to intracavity bottom and diminish, the pyriform slot structure that it is used is excellent compared with existing rectangular channel or other peariform slots
Put and be：On the one hand starting current multiple can be reduced, starting current is reduced to 5 times of rated current by 7 times of conventional rated current,
Larger starting current, larger starting current is produced to impact huge to power network, can make when serious when substantially reducing electric motor starting
Power network tripping operation power-off.
Described rotor bearing is rolling bearing, and away from being 2148mm for length, the external diameter of rotor internal fan 2 is 620mm to bearing,
With prior art sliding axle cushion cap diameter 200mm, bearing away from 2475mm, internal fan external diameter 670mm is compared, and can effectively reduce axle
Friction mechanism loss and ventilation fan machinery loss are held, motor efficiency 1% is improved.The end cap of rotor bearing is cast-iron structure, end
It is completely circular structure to cover, and thickness is 25mm, and compared with the thick semi-circular end caps of conventional 40mm, during motor rotation, bearing with end cover is difficult to shake
It is dynamic, it is lightweight.
Absolutely empty cooling system of the present utility model includes being arranged on cooler above motor body and in cooler
Portion's multiple rows of multiple row cooling tube group that level wears vertically, cooling tube group is in rectangular layout；The top of cooler is provided with exhaust outlet；
Cooler is provided with air guide structure positioned at non-shaft stretching end side, and air guide structure includes wind deflector and is arranged on armature spindle
External fan, external fan is located at the outside of armature spindle cushion cap, and wind deflector is covered at outside external fan and forms connection external fan and cooling
The air-guiding aisle of pipe group, cooling tube group is put using rectangle gauze, can when external fan agitation air quantity fully enter in cooling tube, wind
Amount is big, and good cooling results, weight is also light.
It is power shelves on 560mm in seat No. that absolutely empty cooling positive voltage type anti-explosion motor center of the present utility model is high
Stator punching external diameter is decreased to 1000mm by 1120mm, and rotor punching external diameter 700mm is down to 632mm, and support height is by 1320mm
1190mm is down to, support length is decreased to 2200mm by 2570mm, successfully realizes being reduced to power shelves seat No. 630mm
560mm。
The armature spindle cushion cap diameter of absolutely empty cold positive voltage type anti-explosion motor of the present utility model is decreased to 170mm by 200mm,
Rotor weight is reduced to 2.6 tons by 3.6 tons, and bearing arrangement is changed to rolling bearing structure by sliding bearing, effectively reduces rotor
The friction mechanism loss of pedestal and bearing；Internal fan external diameter is decreased to 620mm by 670mm, rectangle is provided with seat top plate and is led to
Air holes, cooling tube group is designed as rectangular configuration, compared with traditional M type cooler casts, effectively reduce rotor internal fan and
The ventilating machinary loss of cooler, improves the heat exchanger effectiveness of cooler, and gross efficiency has reached national standard《GB30254-
2013 high-voltage motor energy efficiency markets and efficiency grade》Specified in 2 grades of high efficiency motor standard values 96.3%.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of the hollow empty cooling system of the utility model；
Fig. 3 is the A direction views in Fig. 2；
Fig. 4 is the top view of purging pipeline in the utility model；
Fig. 5 is the installation diagram of purging pipeline in the utility model；
Fig. 6 is the structural representation of stator in the utility model；
Fig. 7 is the structural representation of rotor in the utility model；
The structural representation of rotor punching groove in Fig. 8 the utility model.
Specific embodiment
As shown in Figures 1 to 8, a kind of absolutely empty cold positive voltage type anti-explosion motor of 4 significant power of the present utility model, including electricity
Owner's body and the absolutely empty cooling system 4 on motor body, motor body include support 1, stator 2 and rotor 3, wherein,
Stator 2 includes stator core 20, winding coil 21 and stator temperature element 22, and rotor 3 includes rotor core 31, the and of armature spindle 32
Rotor internal fan 33.
Support 1 includes that support plate 12 is arranged inside machine base outer shell 1 in the middle of support plate 12 in the middle of machine base outer shell and support, support,
Support plate 12 offers the stator hole matched with stator in the middle of support, and stator 2 is fixed on inside support 1 by stator hole.
Machine base outer shell is the hollow cavity being made up of base plate, front end-plate, end plate, left plate, right plate and top board, preceding
The edge of support plate is by the uniform insertion of reinforced pipe no less than four and by front end-plate, end plate in the middle of end plate, end plate and support
It is welded to connect with support plate in the middle of support and is integrated, the globality of support more preferably, can effectively prevents motor from vibrating after welding.
The top board of machine base outer shell is located at axle stretch end and is provided with the air vent 16 being connected with absolutely empty cooling system.
Purging pipeline 13 is provided with machine base outer shell, pipeline 13 is U-shaped is fixed on the base plate of machine base outer shell for purging, and the U
Type bottom 131 is located at the axle stretch end of machine base outer shell, and the open at one end of purging pipeline, one end are closed and arranged on body and be provided with
Air port is let out, the opening end 132 for purging pipeline 13 is connected by the connecting tube 14 through machine base outer shell with purging system 15.Purging
System to being dried in purging pipeline 13, through purging the air port of letting out arranged on pipeline 13 discharge, by the dangerous gas in motor by wind
Absolutely empty cooling system 4 is blown into through air vent 16 and discharged through its exhaust outlet, improve motor explosion-proof capabilities.
Rotor core includes rotor punching, and rotor punching periphery is uniformly disposed with multiple rotor punching grooves 34, rotor
Punching groove 34 is the pyriform slot structure that inner chamber is big, notch is small, and inner chamber to intracavity bottom near notch one end from gradually smoothing change
It is small.
Absolutely empty cooling system 4 include being arranged on cooler 41 above motor body and in cooler 41 axially inside
Multiple rows of multiple row cooling tube group 42 that level wears, cooling tube group 42 is in rectangular layout；The top of cooler 41 is provided with exhaust outlet；It is cold
But device 41 is provided with air guide structure positioned at non-shaft stretching end side, and air guide structure includes wind deflector 51 and is arranged on armature spindle 32
On external fan 52, external fan 52 is located at the outside of armature spindle cushion cap, and it is outer and form connection that wind deflector 51 covers at external fan 52
The air-guiding aisle of external fan 52 and cooling tube group 42.Cooling tube quantity be 798, length is 2225mm, a diameter of 20mm, can when
The air quantity of external fan agitation is fully entered in cooling tube, and air quantity is big, and good cooling results, weight is also light；Cooling tubing is using stainless
Steel is designed, and stainless steel cooling pipe material is compared with ordinary carbon steel material, and tubing is difficult to get rusty.Silencer cover is covered with outside cooler 41
43。
Deep bead 6 is installed, deep bead 6 is provided with to be let out between rotor internal fan 33 and stator core 20, rotor core 31
Pressure hole, deep bead is made up of glass mat.Because the intensity of glass mat is high, relief hole can be good at adjusting support again
Pressure in shell, so the glass mat with relief hole can be prevented effectively because the pressure in machine base outer shell is excessive
The situation that caused motor alters axle occurs.
Stator temperature element 22 in stator 2 is drawn from the ventilating duct of stator core 20, can avoid stator temperature element
Discharged in ends contact with winding coil.
Rotor internal fan 33 is centrifugal internal fan, and the external diameter of rotor internal fan 33 is 620mm.
A diameter of 170mm of the pedestal of armature spindle 32, bearing between two bearings platform away from length be 2148mm.Rotor
The rotor bearing 7 set on pedestal is rolling bearing, and the bearing (ball) cover 71 of rolling bearing 333 is cast iron, and its thickness is 25mm,
Can effectively reduce due to bearing friction loss, so as to improve the efficiency of flame-proof electric motor.
Stator core 20 includes stator punching, and stator punching external diameter is 1000mm, and rotor punching external diameter is 632mm, support
Highly it is 1190mm, support length is 2200mm.
The length of left plate and right plate is 2200mm in support, and the thickness of front end-plate and end plate is 30mm, base plate, a left side
Side plate and right side plate thickness are 8mm.Compared with existing positive voltage type anti-explosion motor, the overall weight of support mitigates significantly, in
Heart reduction high, versatility is good.
Stator winding integrally uses VPI vacuum high-pressure power dipping lacquers in the utility model, and after overall dipping lacquer, winding each several part is muddy
So one, can bear bigger electromagnet pull and overvoltage impulsive force.
By above-mentioned technical proposal, the utility model is successfully by the absolutely empty cold positive voltage type anti-explosion motor in 3000 kilowatts of 4 pole
Seat No. 560mm is reduced to by conventional 630mm, lightweight with small volume, efficiency high, the low product competition of noise is excellent
Gesture, while import motor can be replaced；The utility model reduces the center of existing 4 extremely absolutely empty cold positive voltage type anti-explosion motor
Height, reduces cost improves efficiency；Meanwhile, make the installation dimension and shaft extension of positive voltage type anti-explosion motor consistent with former import motor,
Facilitate the maintenance and replacement of positive voltage type anti-explosion motor, and improve the efficiency of positive voltage type anti-explosion motor.
Rotor punching groove 34 is the pyriform slot structure that inner chamber is big, notch is small in the utility model, and inner chamber is by near notch
One end gradually smooths to intracavity bottom and diminishes, the pyriform slot structure that it is used, compared with existing rectangular channel or other peariform slots,
Advantage is：On the one hand starting current multiple can be reduced, starting current is reduced to 5 times of specified electricity by 7 times of conventional rated current
Stream, produces larger starting current, larger starting current to impact huge to power network when substantially reducing electric motor starting, can when serious
Make power network trip to power off.
Rotor bearing 7 be rolling bearing, bearing away from for length be 2148mm, the external diameter of rotor internal fan 2 be 620mm, with show
There are technology sliding axle cushion cap diameter 200mm, bearing away from 2475mm, internal fan external diameter 670mm is compared, and can be effectively reduced bearing and be rubbed
Mechanical loss and ventilation fan machinery loss are wiped, motor efficiency 1% is improved.The end cap 71 of rotor bearing 7 is cast-iron structure, end
It is completely circular structure to cover, and thickness is 25mm, and compared with the thick semi-circular end caps of conventional 40mm, during motor rotation, bearing with end cover is difficult to shake
It is dynamic, it is lightweight.
It is power shelves on 560mm in seat No. that absolutely empty cooling positive voltage type anti-explosion motor center of the present utility model is high
Stator punching external diameter is decreased to 1000mm by 1120mm, and rotor punching external diameter 700mm is down to 632mm, and support height is by 1320mm
1190mm is down to, support length is decreased to 2200mm by 2570mm, successfully realizes being reduced to power shelves seat No. 630mm
560mm。
The armature spindle cushion cap diameter of absolutely empty cold positive voltage type anti-explosion motor of the present utility model is decreased to 170mm by 200mm,
Rotor weight is reduced to 2.6 tons by 3.6 tons, and bearing arrangement is changed to rolling bearing structure by sliding bearing, effectively reduces rotor
The friction mechanism loss of pedestal and bearing；Internal fan external diameter is decreased to 620mm by 670mm, rectangle is provided with seat top plate and is led to
Air holes, cooling tube group is designed as rectangular configuration, compared with traditional M type cooler casts, effectively reduce rotor internal fan and
The ventilating machinary loss of cooler, improves the heat exchanger effectiveness of cooler, and gross efficiency has reached national standard《GB30254-
2013 high-voltage motor energy efficiency markets and efficiency grade》Specified in 2 grades of high efficiency motor standard values 96.3%.
Above example is only used to illustrative and not limiting the technical solution of the utility model, although with reference to above-described embodiment pair
The utility model has been described in detail, it will be understood by those within the art that：The utility model can still be entered
Row modification or equivalent, without deviating from any modification or partial replacement of spirit and scope of the present utility model, it all should
Cover in the middle of right of the present utility model.
Claims (10)
1. the absolutely empty cold positive voltage type anti-explosion motor of a kind of 4 significant power, including motor body and the sky on motor body
Empty cooling system, motor body includes support, rotor and stator, wherein, stator includes that stator core, winding coil and stator are surveyed
Warm element, rotor includes rotor core, armature spindle and rotor internal fan, it is characterised in that：
Support includes that support plate is arranged inside machine base outer shell in the middle of support plate in the middle of machine base outer shell and support, support, branch in the middle of support
Plate offers the stator hole matched with stator, and stator is fixed on base inner by stator hole；
Machine base outer shell is the hollow cavity being made up of base plate, front end-plate, end plate, left plate, right plate and top board, front end
In the middle of plate, end plate and support the edge of support plate by the uniform insertion of reinforced pipe no less than four and by front end-plate, end plate and
Support plate is connected to one in the middle of support；It is provided with purging pipeline in machine base outer shell, pipeline is U-shaped is fixed on machine base outer shell for purging
Base plate on, and the U-shaped bottom be located at machine base outer shell axle stretch end, purge pipeline open at one end, one end closing and body on
Arrangement is provided with lets out air port, and the opening end for purging pipeline is connected by the connecting tube through machine base outer shell with purging system；Support
The top board of shell is located at axle stretch end and is provided with the air vent being connected with absolutely empty cooling system；
Rotor core includes rotor punching, and rotor punching periphery is uniformly disposed with multiple rotor punching grooves, rotor punching groove
It is the pyriform slot structure that inner chamber is big, notch is small, and inner chamber to intracavity bottom is gradually smooth near notch one end from diminishing；
Absolutely empty cooling system includes being arranged on the cooler above motor body and axially inside level wears in cooler
Multiple rows of multiple row cooling tube group, cooling tube group is in rectangular layout；The top of cooler is provided with exhaust outlet；Cooler is located at non-
Axle stretch end side is provided with air guide structure, and air guide structure includes wind deflector and the external fan being arranged on armature spindle, external fan position
In the outside of armature spindle cushion cap, wind deflector is covered at outside external fan and forms the air-guiding aisle of connection external fan and cooling tube group.
2. the absolutely empty cold positive voltage type anti-explosion motor of 4 significant power as claimed in claim 1, it is characterised in that：Internal fan and fixed
Deep bead is installed between sub unshakable in one's determination, rotor core, deep bead is provided with relief hole.
3. the absolutely empty cold positive voltage type anti-explosion motor of 4 significant power as claimed in claim 2, it is characterised in that：Deep bead is by glass
Glass fiberboard is made.
4. the absolutely empty cold positive voltage type anti-explosion motor of 4 significant power as claimed in claim 1, it is characterised in that：Determining in stator
Sub- temperature element is drawn from the ventilating duct of stator core.
5. the absolutely empty cold positive voltage type anti-explosion motor of 4 significant power as claimed in claim 1, it is characterised in that：Cooler outer cover
It is provided with silencer cover.
6. the absolutely empty cold positive voltage type anti-explosion motor of 4 significant powers as described in claim any one of 1-5, it is characterised in that：Turn
Sub- internal fan is centrifugal internal fan, and rotor internal fan external diameter is 620mm.
7. the absolutely empty cold positive voltage type anti-explosion motor of 4 significant powers as described in claim any one of 1-5, it is characterised in that：Turn
A diameter of 170mm of the pedestal of sub- axle, bearing away from length be 2148mm.
8. the absolutely empty cold positive voltage type anti-explosion motor of 4 significant power as claimed in claim 7, it is characterised in that：Armature spindle cushion cap
The rotor bearing of upper setting is rolling bearing, and the bearing (ball) cover of rolling bearing is cast iron, and its thickness is 25mm.
9. the absolutely empty cold positive voltage type anti-explosion motor of 4 significant powers as described in claim any one of 1-5, it is characterised in that：It is fixed
Sub- iron core includes stator punching, and stator punching external diameter is 1000mm, and rotor punching external diameter is 632mm, and support is highly 1190mm,
Support length is 2200mm.
10. the absolutely empty cold positive voltage type anti-explosion motor of 4 significant power as claimed in claim 9, it is characterised in that：Left side in support
The length of plate and right plate is 2200mm, and the thickness of front end-plate and end plate is 30mm, and base plate, left plate and right side plate thickness are
8mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621384504.9U CN206302244U (en) | 2016-12-16 | 2016-12-16 | A kind of absolutely empty cold positive voltage type anti-explosion motor of 4 significant powers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621384504.9U CN206302244U (en) | 2016-12-16 | 2016-12-16 | A kind of absolutely empty cold positive voltage type anti-explosion motor of 4 significant powers |
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| Publication Number | Publication Date |
|---|---|
| CN206302244U true CN206302244U (en) | 2017-07-04 |
Family
ID=59214941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621384504.9U Active CN206302244U (en) | 2016-12-16 | 2016-12-16 | A kind of absolutely empty cold positive voltage type anti-explosion motor of 4 significant powers |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533027A (en) * | 2016-12-16 | 2017-03-22 | 卧龙电气集团股份有限公司 | Four-pole high-power air-to-air-cooling positive pressure type explosion-proof motor |
| CN110676968A (en) * | 2019-09-30 | 2020-01-10 | 江苏新鹏能源科技有限公司 | Novel explosion-proof motor |
-
2016
- 2016-12-16 CN CN201621384504.9U patent/CN206302244U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533027A (en) * | 2016-12-16 | 2017-03-22 | 卧龙电气集团股份有限公司 | Four-pole high-power air-to-air-cooling positive pressure type explosion-proof motor |
| CN110676968A (en) * | 2019-09-30 | 2020-01-10 | 江苏新鹏能源科技有限公司 | Novel explosion-proof motor |
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