CN210468979U - Mining high-voltage explosion-proof variable-frequency speed-regulating three-phase asynchronous motor - Google Patents
Mining high-voltage explosion-proof variable-frequency speed-regulating three-phase asynchronous motor Download PDFInfo
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- CN210468979U CN210468979U CN201921390875.1U CN201921390875U CN210468979U CN 210468979 U CN210468979 U CN 210468979U CN 201921390875 U CN201921390875 U CN 201921390875U CN 210468979 U CN210468979 U CN 210468979U
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- 238000005065 mining Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 73
- 238000001816 cooling Methods 0.000 claims abstract description 35
- 238000009423 ventilation Methods 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 239000012212 insulator Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
A mining high-pressure flame-proof type variable-frequency speed-regulation three-phase asynchronous motor relates to the technical field of motors, a base adopts a water cooling structure and is formed by assembling an inner water jacket and an outer water jacket and welding a front flange and a rear flange, wherein the inner water jacket is provided with a water bar to form a baffling type water channel, and labyrinth type annular water cooling channels are arranged on a front end cover and a rear end cover and are communicated with the baffling type water cooling channels. The axial ventilation holes are uniformly distributed in the stator core, the axial ventilation channels are formed by the uniformly distributed welding ribs of the rotating shaft, and the axial circulation air channels are formed by the ventilation holes in the inner wall of the machine base and the channel steel arranged outside the machine base corresponding to the ventilation holes in the inner wall of the machine base. The utility model discloses according to optimize reasonable deciding, the cooperation of rotor groove, performance parameter index reaches or surpasss industry standard's requirement to have the characteristics that the vibration is little, the noise is low.
Description
The technical field is as follows:
the utility model relates to the technical field of motors, in particular to mining high pressure flame-proof type variable frequency speed governing three-phase asynchronous motor.
Background art:
at present, a double-speed motor driving system is generally adopted in a scraper conveyor of an underground working face of a coal mine in China, and the starting of a high-power motor is realized by switching the double-speed motor from low speed to high speed. However, the starting failure and the chain breakage often occur due to the existence of larger mechanical impact and electrical impact, and the safety is poor. And in this way the drive uses a special double winding two-speed motor together with a double cable and a two-speed switch. The double-speed motor has complex structure and high manufacturing cost, the power supply system is equivalent to two motors, the low-speed switching is not easy to be effectively controlled, the number of fault points is large, and the reliability is poor.
The invention content is as follows:
in view of this, it is necessary to provide a mining high-voltage explosion-proof variable-frequency speed-regulating three-phase asynchronous motor with good cooling and heat dissipation effects, stable working performance, safety, reliability, uneasiness of damage and long service life.
A mining high-pressure flame-proof type variable-frequency speed-regulation three-phase asynchronous motor comprises a base, a motor rotating shaft, a rotor, a stator, a cooling fan, a front end cover, a rear end cover, a front outer cover, a sealing structure, a front inner cover, a rear inner cover and a conducting ring, wherein the front inner cover and the rear inner cover adopt an explosion-proof labyrinth sealing structure, the base is assembled and welded by an inner water jacket, an outer water jacket, a front flange and a rear flange, a water retaining strip is welded on the excircle of the inner water jacket, the water retaining strip forms a baffling type water path and is press-fitted and welded with the outer water jacket, a channel steel is arranged on the outer wall of the base to form a circulating cooling air duct, labyrinth water cooling passages are arranged on the front end cover and the rear end cover and are communicated with the baffling type water path of the base, a ventilating pipe is arranged on a stator iron core, axial ventilation holes are uniformly, one of the cylindrical roller bearings and one of the deep groove ball bearings are arranged at the shaft extension end of a motor rotating shaft, the other cylindrical roller bearing is an insulating bearing and is arranged at the tail end of the motor rotating shaft, a cooling fan adopts an off-core fan and is fixedly connected with the motor rotating shaft and is arranged between the non-shaft extension end of a rotor and a rear end cover, a conducting ring is arranged on a rear inner cover and is arranged between the bearing and an inner cover oil storage chamber, the rotor adopts a single cage structure, the stator and the rotor grooves are matched by adopting a plurality of rotor grooves, a main insulator wire passing assembly and a control insulator wire passing assembly are arranged in a junction box, a guide rail and a universal junction box terminal are arranged on the junction box to fix the main insulator wire passing assembly and the control insulator wire passing assembly, a high-voltage cable connector is arranged in a wire outlet.
Preferably, the outer circle of the inner water jacket is provided with a water bar to form a baffling type water path which is assembled with the outer water jacket, and the position on the outer circle of the outer water jacket corresponding to the water bar is provided with an anti-bulging hole for plug welding and fixing.
Preferably, the outer part of the machine base is provided with channel steel corresponding to the ventilation holes on the inner wall of the machine base, and axial ventilation holes are uniformly distributed on the stator core and the motor rotating shaft to form a cooling channel.
Preferably, the front end cover and the rear end cover are labyrinth annular water paths which are connected with two ends of the base to form a circulating water path.
Preferably, the cooling inner fan is fixedly connected with the motor rotating shaft and is positioned between the rotor and the rear end cover; the sealing structure is an IP67 sealing structure, and the IP67 sealing structure is fixed on the front outer cover and is positioned between the shaft extension end and the oil storage chamber of the front outer cover.
Preferably, the conducting ring is fixed on the rear inner cover and is positioned between the cylindrical roller insulating bearings.
The utility model discloses an explosion-proof labyrinth seal structure is adopted to preceding inner cup and back inner cup, the motor frame adopts in, outer water jacket reaches before, the back flange assembly welding forms, welding water bar forms the baffling formula water route on the excircle of inner water jacket and makes with outer water jacket pressure equipment welding again, be equipped with the channel-section steel on the frame outer wall and make circulative cooling wind channel, before, be equipped with labyrinth water-cooling passageway on the rear end cap, and be linked together with frame baffling formula water route, stator core both ends face equipartition is equipped with the axial ventilation hole, pivot core fender equipartition is equipped with gusset formation axial ventilation way, before, two cylindrical roller bearings and a deep groove ball bearing are equipped with respectively to the rear end cap with the motor shaft, one of them cylindrical roller bearing, a deep groove ball bearing installs the axle extension end at the motor shaft, another cylindrical roller. The cooling fan adopts an off-core fan, is fixedly connected with the rotating shaft of the motor and is positioned between the non-shaft-extending end of the rotor and the rear end cover. The back inner cup is equipped with the conducting ring and prevents thereby the life of axle current ablation bearing to be located between bearing and the inner cup oil storage chamber, the rotor adopts single cage structure, and decide, rotor groove cooperation adopts the cooperation of rotor multislot, and the higher harmonic that produces when inhibiting motor low frequency effectively causes motor vibration, noise. The junction box is internally provided with a main insulator wire passing assembly and a control insulator wire passing assembly, and a guide rail and a universal junction box terminal are installed to fix the main insulator wire passing assembly and the control insulator wire passing assembly for connecting a control wire. The high-voltage cable connector is arranged in the wire outlet cavity of the junction box, and the engine base flange is provided with an oil injection hole and an oil drain hole, so that the bearing can be conveniently and periodically filled with oil. According to the high-voltage flame-proof type high-voltage variable-frequency speed-regulating three-phase asynchronous motor for the scraper conveyor manufactured according to the scheme, the motor cooling system which is formed by forming the circulating air path inside and outside to be air-cooled and water-cooled by the outer shell is adopted, so that the temperature rise of the stator, the rotor and the winding thereof and the supporting part of the rotating shaft can be effectively controlled, and the normal operation of the motor is reliably ensured. The rotor adopts single cage structure, and the motor performance index promotes by a wide margin. The energy-saving and high-efficiency standard is achieved, and the driving requirement of a scraper conveyor transmission system is met. Compared with the prior art, the utility model has the advantages of novel structure, the suitability is strong, has that overload capacity is strong, the vibration is little, the noise is low, operates steadily moreover, good reliability, the energy consumption is low, barrier propterty is good, long service life.
Description of the drawings:
in order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram of a partial section structure of a mining high-voltage explosion-proof variable-frequency speed-regulating three-phase asynchronous motor.
Fig. 2 is a schematic view of the ventilation tube of fig. 1.
In the figure: the anti-explosion labyrinth type sealing structure comprises an IP67 sealing structure 1, a front outer cover 2, a front end cover 3, an anti-explosion labyrinth type sealing structure 4, a high-voltage cable connector 5, a ventilating pipe 6, a stator 7, a machine base 8, a rotor 9, a motor rotating shaft 10, a cooling fan 11, a rear end cover 12, a conducting ring 13 and a ventilating hole 14.
The specific implementation mode is as follows:
in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "front" and "rear" and the like are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to be referred must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
The utility model provides a following specific embodiment.
Referring to fig. 1 and fig. 2, the mining high-pressure explosion-proof frequency-conversion speed-regulation three-phase asynchronous motor comprises a base 8, a motor rotating shaft 10, a rotor 9, a stator 7, a cooling fan 11, a front end cover 3, a rear end cover 12, a front outer cover 2, an IP67 sealing structure 1, a front inner cover, a rear inner cover and a conducting ring 13, wherein the front inner cover and the rear inner cover adopt an explosion-proof labyrinth sealing structure 4, the base 8 is formed by assembling and welding an inner water jacket, an outer water jacket, a front flange and a rear flange, a water retaining strip is welded on the excircle of the inner water jacket, the water retaining strip forms a water path and is welded with the outer water jacket in a press-fitting manner, a channel steel is arranged on the outer wall of the base 8 to form a circulating cooling air duct, labyrinth water cooling passages are arranged on the front end cover 3 and the rear end cover 12 and are communicated with the water path of the, the front end cover 3, the rear end cover 12 and the motor rotating shaft 10 are respectively provided with two cylindrical roller bearings and a deep groove ball bearing, wherein one cylindrical roller bearing and one deep groove ball bearing are arranged at the shaft extension end of the motor rotating shaft 10, the other cylindrical roller bearing is an insulating bearing and is arranged at the tail end of the motor rotating shaft 10, a cooling fan 11 adopts an off-core fan and is fixedly connected with the motor rotating shaft 10 and is positioned between the non-shaft extension end of a rotor 9 and the rear end cover 12, a conducting ring 13 is arranged on a rear inner cover and is positioned between the bearing and an inner cover oil storage chamber, the rotor 9 adopts a single cage structure, a stator 7 and a rotor 9 are matched by adopting a plurality of grooves of the rotor 9, a main insulator wire passing assembly and a control insulator wire passing assembly are arranged in a junction box, a guide rail and a universal junction box terminal are arranged on the junction box to fix the main insulator, the outlet cavity of the junction box is provided with a high-voltage cable connector 5, and an oil injection hole and an oil drain hole are arranged on a flange of the engine base 8.
The outer circle of the inner water jacket is provided with a water bar to form a baffling type water path which is assembled with the outer water jacket, and the position of the outer circle of the outer water jacket corresponding to the water bar is provided with an anti-bulging hole for plug welding and fixing. The outer part of the machine base 8 is provided with channel steel corresponding to the ventilation holes 14 on the inner wall of the machine base 8, and the axial ventilation holes 14 are uniformly distributed on the stator 7 iron core and the motor rotating shaft 10 to form a cooling channel.
The front end cover 3 and the rear end cover 12 are labyrinth annular water paths which are connected with two ends of the base 8 to form a circulating water path. The cooling inner fan is fixedly connected with a motor rotating shaft 10 and is positioned between the rotor 9 and the rear end cover 12; the sealing structure is IP67 sealing structure 1, and IP67 sealing structure 1 is fixed on the front outer cover 2 and is positioned between the shaft extension end and the oil storage chamber of the front outer cover 2. The conducting ring 13 is fixed on the rear inner cover and is positioned between the cylindrical roller insulating bearings.
The utility model adopts an explosion-proof labyrinth seal structure 4 for the front inner cover and the rear inner cover, the motor frame 8 is formed by assembling and welding an inner water jacket, an outer water jacket, a front flange and a rear flange, a water bar is welded on the excircle of the inner water jacket to form a baffling water path and then is assembled and welded with the outer water jacket, the outer wall of the frame 8 is provided with a channel steel to form a circulating cooling air duct, the front end cover 12 and the rear end cover 12 are provided with labyrinth water cooling channels, and is communicated with a base 8 baffling type water path, two end faces of an iron core of a stator 7 are uniformly distributed with axial vent holes 14, a rotating shaft iron core is uniformly distributed with rib plates to form an axial vent channel, a front end cover 12, a rear end cover 12 and a motor rotating shaft 10 are respectively provided with two cylindrical roller bearings and a deep groove ball bearing, one of the cylindrical roller bearings and one of the deep groove ball bearings are installed at the shaft extension end of the motor rotating shaft 10, and the other cylindrical roller bearing is an insulating bearing and is installed at the tail end of the motor rotating shaft 10. The cooling fan 11 is an off-core fan, is fixedly connected with the motor rotating shaft 10, and is positioned between the non-shaft-extending end of the rotor 9 and the rear end cover 12. The back inner cup is equipped with conducting ring 13 and prevents that the axle current from ablating the life of bearing thereby to be located between bearing and the inner cup oil storage chamber, rotor 9 adopts single cage structure, and decides, rotor 9 slot cooperation adopts rotor 9 multislot cooperation, and the higher harmonic that produces when inhibiting motor low frequency effectively causes motor vibration, noise. The junction box is internally provided with a main insulator wire passing assembly and a control insulator wire passing assembly, and a guide rail and a universal junction box terminal are installed to fix the main insulator wire passing assembly and the control insulator wire passing assembly for connecting a control wire. The high-voltage cable connector 5 is arranged in the wire outlet cavity of the junction box, and the oil injection hole and the oil drain hole are formed in the flange of the base 8, so that the bearing can be conveniently and periodically filled with oil. According to the high-voltage flame-proof type high-voltage variable-frequency speed-regulating three-phase asynchronous motor for the scraper conveyor manufactured according to the scheme, the motor cooling system which is formed by forming the air cooling and outer shell water cooling by the circulating air path inside and outside is adopted, the temperature rise of the stator 7, the rotor 9 and the winding thereof and the supporting part of the rotating shaft can be effectively controlled, and the normal operation of the motor is reliably ensured. The rotor 9 adopts a single cage structure, and the performance index of the motor is greatly improved. The energy-saving and high-efficiency standard is achieved, and the driving requirement of a scraper conveyor transmission system is met.
Compared with the prior art, the motor has the advantages of novel structure, strong applicability, strong overload capacity, small vibration, low noise, stable operation, good reliability, low energy consumption, good protection performance, long service life and the like.
The utility model discloses the parameter of motor is rated power 2000kW, rated voltage 3300V, rated current 404A, rated speed 1493r/min, protection level IP67, heat grading 180(H), efficiency 96%, power factor 0.89, maximum torque multiple 2.2, stalling torque multiple 1.2, stalling current multiple 9.0, cooling system water-cooling ICW37, installation pattern B5, work system continuous operation system S1, be one kind have high-power, efficient high-pressure flame proof type variable frequency speed governing three-phase asynchronous motor.
Claims (6)
1. A mining high-voltage flame-proof type variable-frequency speed-regulation three-phase asynchronous motor is characterized in that: the mining high-pressure flame-proof type variable-frequency speed-regulating three-phase asynchronous motor comprises a base, a motor rotating shaft, a rotor, a stator, a cooling fan, a front end cover, a rear end cover, a front outer cover, a sealing structure, a front inner cover, a rear inner cover and a conducting ring, wherein the front inner cover and the rear inner cover are of an explosion-proof labyrinth sealing structure, the base is formed by assembling and welding an inner water jacket, an outer water jacket, a front flange and a rear flange, a water retaining strip is welded on the excircle of the inner water jacket, the water retaining strip forms a water path and is in press-fit welding with the outer water jacket, a channel steel is arranged on the outer wall of the base to form a circulating cooling air duct, labyrinth water cooling passages are arranged on the front end cover and the rear end cover and are communicated with the base baffling water path, a stator iron core is provided with ventilating pipes, axial ventilating holes are uniformly distributed, one of the cylindrical roller bearings and one of the deep groove ball bearings are arranged at the shaft extension end of a motor rotating shaft, the other cylindrical roller bearing is an insulating bearing and is arranged at the tail end of the motor rotating shaft, a cooling fan adopts an off-core fan and is fixedly connected with the motor rotating shaft and is arranged between the non-shaft extension end of a rotor and a rear end cover, a conducting ring is arranged on a rear inner cover and is arranged between the bearing and an inner cover oil storage chamber, the rotor adopts a single cage structure, the stator and the rotor grooves are matched by adopting a plurality of rotor grooves, a main insulator wire passing assembly and a control insulator wire passing assembly are arranged in a junction box, a guide rail and a universal junction box terminal are arranged on the junction box to fix the main insulator wire passing assembly and the control insulator wire passing assembly, a high-voltage cable connector is arranged in a wire outlet.
2. The mining high-voltage explosion-proof variable-frequency speed-regulating three-phase asynchronous motor according to claim 1, characterized in that: the outer circle of the inner water jacket is provided with a water bar to form a baffling type water path which is assembled with the outer water jacket, and the position of the outer circle of the outer water jacket corresponding to the water bar is provided with an anti-bulging hole for plug welding and fixing.
3. The mining high-voltage explosion-proof variable-frequency speed-regulating three-phase asynchronous motor according to claim 2, characterized in that: the outer part of the machine base is provided with channel steel corresponding to the ventilation holes on the inner wall of the machine base, and axial ventilation holes are uniformly distributed on the stator core and the motor rotating shaft to form a cooling channel.
4. The mining high-voltage explosion-proof variable-frequency speed-regulating three-phase asynchronous motor according to claim 1, characterized in that: the front end cover and the rear end cover are labyrinth annular water paths which are connected with the two ends of the base to form a circulating water path.
5. The mining high-voltage flame-proof type variable-frequency speed-regulating three-phase asynchronous motor according to any one of claims 1 to 4, characterized in that: the cooling inner fan is fixedly connected with the motor rotating shaft and is positioned between the rotor and the rear end cover; the sealing structure is an IP67 sealing structure, and the IP67 sealing structure is fixed on the front outer cover and is positioned between the shaft extension end and the oil storage chamber of the front outer cover.
6. The mining high-voltage explosion-proof variable-frequency speed-regulating three-phase asynchronous motor according to claim 5, characterized in that: the conductive ring is fixed on the rear inner cover and is positioned between the cylindrical roller insulating bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921390875.1U CN210468979U (en) | 2019-08-26 | 2019-08-26 | Mining high-voltage explosion-proof variable-frequency speed-regulating three-phase asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921390875.1U CN210468979U (en) | 2019-08-26 | 2019-08-26 | Mining high-voltage explosion-proof variable-frequency speed-regulating three-phase asynchronous motor |
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| Publication Number | Publication Date |
|---|---|
| CN210468979U true CN210468979U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921390875.1U Withdrawn - After Issue CN210468979U (en) | 2019-08-26 | 2019-08-26 | Mining high-voltage explosion-proof variable-frequency speed-regulating three-phase asynchronous motor |
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| CN (1) | CN210468979U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492655A (en) * | 2019-08-26 | 2019-11-22 | 宁夏西北骏马电机制造股份有限公司 | Mining high-voltage explosion-proof frequency conversion speed-regulating three-phase asynchronous motor |
-
2019
- 2019-08-26 CN CN201921390875.1U patent/CN210468979U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492655A (en) * | 2019-08-26 | 2019-11-22 | 宁夏西北骏马电机制造股份有限公司 | Mining high-voltage explosion-proof frequency conversion speed-regulating three-phase asynchronous motor |
| CN110492655B (en) * | 2019-08-26 | 2024-03-29 | 宁夏西北骏马电机制造股份有限公司 | Mining high-voltage explosion-proof variable-frequency speed-regulating three-phase asynchronous motor |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200505 Effective date of abandoning: 20240329 |