CN114552852A - Large-scale inside and outside mixed double air-cooled and water-cooled permanent magnet synchronous motor - Google Patents
Large-scale inside and outside mixed double air-cooled and water-cooled permanent magnet synchronous motor Download PDFInfo
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- CN114552852A CN114552852A CN202210210568.0A CN202210210568A CN114552852A CN 114552852 A CN114552852 A CN 114552852A CN 202210210568 A CN202210210568 A CN 202210210568A CN 114552852 A CN114552852 A CN 114552852A
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000000498 cooling water Substances 0.000 claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000002002 slurry Substances 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 23
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
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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
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
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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
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
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- 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
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
-
- 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
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The invention discloses a large-scale internal and external mixing double air-cooling and water-cooling permanent magnet synchronous motor which comprises a base, a stator, a rotor and a main shaft, wherein a cooling water channel is arranged in the base, the main shaft is a hollow shaft, the rear end of the main shaft is provided with a connecting flange, the connecting flange in the main shaft is connected with a shaft sleeve through a ball cage universal coupling, and the shaft sleeve is used for being connected with a rotating shaft of a slurry pump; the rotor core is embedded with permanent magnet steel, the front end and the rear end of the rotor support are respectively provided with a fan, the upper part of the front end cover is provided with a plurality of air inlet holes, the air inlet holes are provided with an air guide cover in corresponding positions, a centrifugal fan is arranged above the air guide cover, and the rear end cover is provided with a plurality of air outlet holes. The engine base adopts a steel welding cylinder structure, so that the whole rigidity is good, and the vibration is low; by arranging the cooling water channel, the centrifugal fan and the two fans, a water cooling and internal and external mixing double air cooling circulation is formed, and the temperature rise of the motor is effectively controlled; the shaft sleeve and the rotor rotate synchronously, so that vibration sources of the motor are reduced, the running stability of the motor is improved, and the purposes of low speed, large torque, energy conservation and high efficiency are achieved.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a large-scale internal and external mixing double air cooling and water cooling permanent magnet synchronous motor for petroleum and natural gas drilling production.
Background
The traditional slurry pump usually adopts an induction asynchronous motor as a driving motor, an excitation magnetic field of the induction asynchronous motor is provided by a stator winding, a short-distance distributed winding is required to ensure the sine degree of the excitation magnetic field, and the slurry pump is difficult to manufacture into a multi-pole low-speed slurry pump. Therefore, a mechanical deceleration method is often used to realize low speed. The mechanical transmission device causes the problems of long transmission chain, low efficiency, complex structure and large operation and maintenance workload. In order to meet the driving requirement of the maximum load, an asynchronous motor with larger rated power is often selected, so that the load rate of most motors is 50% -80%, the phenomenon of 'large horse pulls a trolley' exists, the power factor and efficiency are lower, and electric energy is wasted. Therefore, a scheme that a permanent magnet low-speed high-torque motor is adopted to replace an induction asynchronous motor and a belt pulley mechanism needs to be developed as soon as possible. On the basis of meeting the motor performance, the motor size is reduced, the cost is reduced, and the effects of perfectly solving two core problems of low speed, large torque and energy conservation and high efficiency are achieved.
Disclosure of Invention
In order to solve the problems that the load rate of the existing slurry pump driving motor is 50-80%, a large horse-drawn trolley is caused, the power factor and efficiency are low, and electric energy is wasted in the prior art, the invention provides a large-scale internal and external mixed double air-cooling and water-cooling permanent magnet synchronous motor.
In order to achieve the purpose, the invention provides the following technical scheme:
a large-scale inside and outside mixed double air-cooled, water-cooled permanent magnet synchronous motor, including the base, the stator that the cover locates in the base, the rotor that the cover locates in the stator and main axis fixedly connected with rotor, characterized by that there are cooling water channels in the said base lateral wall, there are two pieces of water inlet and outlet pipes to link with delivery port and water inlet of the external water cooling system separately on the lateral wall of said cooling water channel, form the water-cooling circuit, can carry on the water-cooled heat dissipation to the inside of the motor, the said main axis sets as the hollow shaft, the inside centre cover of the said main axis has universal couplings of ball cage, the rear end has connection flanges, the said universal couplings rear end of ball cage is fixedly connected with front end of connection flange, the front end fixedly connects with the axle sleeve, the said axle sleeve is used for connecting with the spindle of the slurry pump;
the rotor comprises a rotor core and a rotor support, a plurality of pieces of permanent magnet steel are embedded in the rotor core, the rotor core is fixedly connected with the rotor support, the rotor support is fixedly connected with the middle of the main shaft through a first flat key, and a front fan and a rear fan are respectively arranged on the front end face and the rear end face of the rotor support;
the front end and the rear end of the base are respectively provided with a front end cover and a rear end cover, an inner hole of the front end cover is connected with the outer circular surface of the main shaft through a front bearing assembly, an inner hole of the rear end cover is connected with the outer circular surface of the main shaft through a rear bearing assembly, the upper part of the front end cover is provided with a plurality of circumferentially and uniformly distributed air inlet holes, an air guide cover is arranged at the position, corresponding to the air inlet holes, of the upper part of the front side surface of the front end cover, a centrifugal fan is arranged above the air guide cover, the front end surface of the front end cover is provided with a stepped flange, and the stepped flange is sleeved outside the shaft sleeve and is used for being connected with a mud pump bearing seat; the rear end cover is provided with a plurality of air outlet holes which are uniformly distributed in the circumferential direction;
the centrifugal fan sucks external cold air into the motor and throws the cold air into the motor through the wind scooper and the air inlet hole, so that the air pressure in the base is increased, the rotor rotates to drive the front fan and the rear fan to synchronously rotate, the air in the base is mixed, the entering cold air and hot air flow and mix, the internal temperature is uniform, meanwhile, the cooling water channel in the base is matched with the hot air in the base to perform quick heat exchange, the cooling speed is further accelerated, the air pressure is increased, the air in the base is forced to be discharged from the air outlet hole in the rear end cover, and therefore internal and external mixing double-air cooling circulation is formed.
As a further improvement of the technology, the engine base is of a steel welding cylindrical structure and comprises an inner cylinder, an outer cylinder, two end sealing rings and water inlets and water outlets, the inner cylinder is sleeved in the outer cylinder, the two end sealing rings are fixedly connected to the left end and the right end of the inner cylinder and the outer cylinder in a welding and sealing mode respectively, the cooling water channels are arranged between the inner cylinder and the outer cylinder, the two water inlets and the two water outlets are arranged on the side wall of the front side of the outer cylinder in a spaced mode side by side and are communicated with the cooling water channels.
As a further improvement of the technology, N first water channel ribs which are uniformly distributed circumferentially and are parallel to the axis and N second water channel ribs which are uniformly distributed circumferentially and are parallel to the axis are arranged on the outer side wall of the inner cylinder, N is a natural number greater than 1, one end of each first water channel rib is fixedly connected with the inner end face of the front side end sealing ring, a gap of 50-80 mm is reserved between the other end of each first water channel rib and the inner end face of the rear side end sealing ring, one end of each second water channel rib is fixedly connected with the inner end face of the rear side end sealing ring, a gap of 50-80 mm is reserved between the other end of each second water channel rib and the inner end face of the front side end sealing ring, and the first water channel ribs and the second water channel ribs are arranged in a staggered manner, so that an S-shaped circuitous cooling water channel is formed;
two third water channel ribs parallel to the axis are uniformly arranged between every two adjacent first water channel ribs and every two adjacent second water channel ribs on the outer side wall of the inner cylinder, gaps of 50-80 mm are reserved between the two ends of each third water channel rib and the inner end face of the corresponding side end sealing ring, and the third water channel ribs form a plurality of water channel interlayers in the cooling water channel, so that the water flow speed is delayed, heat exchange between cold water and hot air in the machine base is facilitated, and the heat dissipation efficiency is improved.
As a further improvement of the technology, the wind scooper is fan-shaped, the upper end of the wind scooper is provided with a vent communicated with the inside of the centrifugal fan, the right side of the wind scooper is provided with an opening, the right end face of the wind scooper is fixedly connected with the front end cover, and the air inlet is formed in the right opening of the wind scooper.
As a further improvement of the technology, the air inlet holes are provided with two groups, one group is provided with a plurality of first air inlet holes which are uniformly distributed circumferentially, the other group is provided with a plurality of second air inlet holes which are uniformly distributed circumferentially, and the second air inlet holes are arranged on the inner side of the first air inlet holes and staggered with the first air inlet holes.
As a further improvement of the technology, the exhaust vent is provided with two groups, one group is provided with a plurality of first exhaust vents which are circumferentially and uniformly distributed, the other group is provided with a plurality of second exhaust vents which are circumferentially and uniformly distributed, and the second exhaust vents are arranged on the inner side of the first exhaust vents and are staggered with the first exhaust vents.
As a further improvement of the technology, the front bearing assembly comprises a front bearing seat, a front bearing, a front inner bearing sleeve, a first labyrinth oil seal and a first oil slinger, the front bearing seat is sleeved between the outer circular surface of the main shaft and the inner hole wall of the front end cover, a flange is arranged on the outer side surface of the front bearing seat and fixedly connected with the front end cover, the front bearing is arranged in the front bearing seat, the first labyrinth oil seal is sleeved at the front end of the outer circular surface of the main shaft at the matching position of the front bearing seat, the front inner bearing sleeve is arranged at the rear end of the front bearing, and the first oil slinger is arranged at the matching position of the rear end of the front bearing and the front inner bearing sleeve;
the rear bearing assembly comprises a rear bearing seat, a rear bearing, a rear inner bearing sleeve, a second labyrinth oil seal and a second oil slinger, the rear bearing seat is sleeved between the outer circular surface of the main shaft and the inner hole wall of the rear end cover, a flange is arranged on the outer side surface of the rear bearing and fixedly connected with the rear end cover, the rear bearing is arranged in the rear bearing seat, the second labyrinth oil seal is sleeved at the rear end of the outer circular surface of the main shaft at the matching position of the rear bearing seat, the front end of the rear bearing is sleeved with the rear inner bearing sleeve, and the second oil slinger is arranged at the matching position of the front end of the rear bearing and the rear inner bearing sleeve.
As the further improvement of this technique, the equal symmetry in upper and lower both sides of terminal surface is equipped with first keyway before flange plate of flange, correspond the position with first keyway on the main shaft rear end face and all be equipped with the second keyway, first keyway is equipped with the flat key of second with corresponding in the second keyway, be equipped with the bolt mounting hole that a plurality of is the circumference equipartition on flange plate of flange, the bolt mounting hole sets up with first keyway stagger, correspond the position with the bolt mounting hole on the main shaft rear end face and all be equipped with matched with internal thread hole, flange plate and the main shaft of flange pass through the flat key-type connection of second to cooperate a plurality of bolt fixed connection.
As a further improvement of the technology, a coaxial small shaft is fixedly connected to the rear end of the connecting flange, a rotary transformer is mounted on the outer circular surface of the small shaft, and the rotary transformer is used for measuring speed to realize closed-loop control; the rotary transformer is provided with a first rain cover outside, the first rain cover is provided with an aviation plug connector, and a protective cover is arranged outside the aviation plug connector.
As a further improvement of the technology, a second rain cover is arranged on the outer side of the rear end cover.
Compared with the prior art, the invention has the beneficial effects that: 1) the engine base adopts a steel welded cylinder structure, so that the whole rigidity is good, and the vibration is low; 2) a water cooling loop is formed by arranging a cooling water channel, and cooling water exchanges heat with hot air in the base through the inner side wall of the base, so that the heat in the base is taken away; the centrifugal fan, the front end cover air inlet hole, the front fan, the rear fan and the rear end cover air outlet hole are arranged, so that air is fed into the front end cover and discharged out of the rear end cover, and an internal and external mixed double air cooling circulation is formed, so that an air path effectively contacts heating parts of the motor, and the temperature rise of the motor is effectively controlled; 3) through setting up the hollow shaft, flange, ball cage universal joint and axle sleeve, the rotor rotates and can drive the synchronous rotation of axle sleeve, the axle sleeve is connected with the slush pump main shaft, thereby can directly drive the slush pump main shaft and rotate, mechanical structure such as belt or chain drive of current asynchronous motor have been saved, moreover, the steam generator is simple in structure, high safety, the vibration source of motor has been reduced, motor running stability has been promoted, the effect of perfectly solving two big core problems of low-speed big moment of torsion and energy-conserving efficient has been reached, the steam generator is suitable for compact high energy density motor, reach high-efficient low consumption purpose.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the internal structure of the motor according to the embodiment of the present invention;
FIG. 3 is a schematic diagram of a stand structure according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of the inner cylinder, the end sealing ring and the cooling water channel of the engine base according to the embodiment of the present invention;
FIG. 5 is a schematic view of the front end cover air inlet hole and the wind scooper;
FIG. 6 is a schematic view of the structure of the air outlet of the rear end cover;
FIG. 7 is a right side view of the attachment flange;
fig. 8 is a sectional view taken along line a-a of fig. 7.
Fig. 9 is a right side view of the spindle.
In the figure: 1. an off-core fan, 2, a front end cover, 201, a first air inlet hole, 202, a second air inlet hole, 3, a base, 301, an outer cylinder, 302, an inner cylinder, 3021, a first water channel rib, 3022, a second water channel rib, 3023, a third water channel rib, 303, an end seal ring, 304, an inlet/outlet pipe, 305, a cooling water channel, 4, a stator, 5, a rotor, 6, a front fan, 7, a rotor bracket, 8, a rear fan, 9, a rear end cover, 901, a first air outlet hole, 902, a second air outlet hole, 10, a front bearing seat, 11, a front inner bearing housing, 12, a front bearing, 13, a first oil slinger, 14, a first labyrinth seal, 15, a rear bearing seat, 16, a rear inner bearing housing, 17, a rear bearing, 18, a second oil slinger, 19, a second labyrinth seal, 20, a main shaft, 2001, a first key groove, 2002, an inner thread hole, 21, a first flat key, 22, a bolt, 23, a connecting flange 1, 1, The second key groove comprises a second key groove body 2302, a bolt mounting hole body 24, a ball cage universal coupling body 25, a second flat key 26, a shaft sleeve 27, a stepped flange 28, a small shaft 29, a rotary transformer 30, an aviation plug connector 31, an air guide cover 32, a second rain cover 33, a first rain cover 34, a protective cover 35, a slurry pump bearing seat 36 and a slurry pump rotating shaft.
Detailed Description
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, the embodiment of the present invention includes a machine base 3, a stator 4 sleeved in the machine base 3, a rotor 5 sleeved in the stator 4, and a main shaft 20 fixedly connected to the rotor 5, wherein a cooling water channel 305 is provided in an outer side wall of the machine base 3, two water inlet and outlet pipes 304 are provided on an outer side wall of the cooling water channel 305 and respectively connected to a water outlet and a water inlet of an external water cooling system to form a water cooling loop, which can perform water cooling heat dissipation on the inside of a motor, the main shaft 20 is set as a hollow shaft, a ball cage universal coupling 24 is sleeved at an inner center of the main shaft 20, a connecting flange 23 is provided at a rear end, a rear end of the ball cage universal coupling 24 is fixedly connected to a front end of the connecting flange 23, a shaft sleeve 26 is fixedly connected to a front end, and the shaft sleeve 26 is used for connecting to a mud pump rotating shaft 36;
the rotor 5 comprises a rotor core and a rotor bracket 7, a plurality of pieces of permanent magnet steel are embedded on the rotor core, the rotor core is fixedly connected with the rotor bracket 7, the rotor bracket 7 is fixedly connected with the middle of the main shaft 20 through a first flat key 21, and a front fan 6 and a rear fan 8 are respectively arranged on the front end face and the rear end face of the rotor bracket 7;
the front end and the rear end of the base 3 are respectively provided with a front end cover 2 and a rear end cover 9, an inner hole of the front end cover 2 is connected with the outer circular surface of the main shaft 20 through a front bearing assembly, an inner hole of the rear end cover 9 is connected with the outer circular surface of the main shaft 20 through a rear bearing assembly, the upper part of the front end cover 2 is provided with a plurality of circumferentially and uniformly distributed air inlet holes, a wind scooper 31 is arranged at the position corresponding to the air inlet holes at the upper part of the front side surface of the front end cover 2, a centrifugal fan 1 is arranged above the wind scooper 31, the front end surface of the front end cover 2 is provided with a stepped flange 27, and the stepped flange 27 is sleeved outside the shaft sleeve 26 and is used for being connected with a mud pump bearing seat 35; the rear end cover 9 is provided with a plurality of air outlet holes which are uniformly distributed in the circumferential direction;
the centrifugal fan 1 of the invention sucks external cold air and throws the external cold air into the motor through the wind scooper 31 and the wind inlet to increase the air pressure in the base 3, simultaneously the rotor 5 rotates to drive the front fan 6 and the rear fan 8 to synchronously rotate, the air in the base 3 is mixed, the entered cold air and the entered hot air flow and mix, the temperature of the internal air is uniform, and simultaneously the cooling water channel 305 in the base 3 is matched, the cold water in the cooling water channel 305 and the hot air in the base 3 carry out rapid heat exchange through the inner side wall of the base 3, the cold water in the cooling water channel 305 is changed into hot water to be discharged from the water inlet 304, the heat is taken away, the internal cooling speed is accelerated, the air pressure in the base 3 is increased, the air in the base 3 is forced to be discharged from the wind outlet on the rear end cover 9, thereby forming an internal and external mixing double air cooling circulation, and the wind path effectively contacts the heating part of the motor, thereby effectively controlling the temperature rise of the motor.
As shown in fig. 3 and 4, the base 3 is of a steel welded cylindrical structure, and includes an inner cylinder 302, an outer cylinder 301, an end sealing ring 303, and a water inlet/outlet port 304, the inner cylinder 302 is sleeved in the outer cylinder 301, the end sealing ring 303 is provided with two pieces, which are respectively welded, sealed and fixedly connected to the left and right ends of the inner cylinder 301 and the outer cylinder 302, the cooling water channel 305 is provided between the inner cylinder 302 and the outer cylinder 301, the water inlet/outlet port 304 is provided with two pieces, and the two water inlet/outlet ports 304 are spaced side by side on the front side wall of the outer cylinder 301 and are both communicated with the cooling water channel 305.
As shown in fig. 4, 20 first water channel ribs 3021 which are uniformly distributed circumferentially and parallel to the axis and 20 second water channel ribs 3022 which are uniformly distributed circumferentially and parallel to the axis are arranged on the outer side wall of the inner cylinder 302, one end of each first water channel rib 3021 is fixedly connected to the inner end surface of the front side end sealing ring 303, a gap of 50 to 80mm is left between the other end of each first water channel rib 3021 and the inner end surface of the rear side end sealing ring 303, one end of each second water channel rib 3022 is fixedly connected to the inner end surface of the rear side end sealing ring 303, a gap of 50 to 80mm is left between the other end of each second water channel rib 3022 and the inner end surface of the front side end sealing ring 303, and the first water channel ribs 3021 and the second water channel ribs 3022 are arranged in a staggered manner, so that the S-shaped circuitous cooling water channel 305 is formed;
two third water channel ribs 3023 parallel to the axis are uniformly arranged between every two adjacent first water channel ribs 3021 and every two adjacent second water channel ribs 3022 on the outer side wall of the inner cylinder 302, a gap of 50-80 mm is reserved between each two ends of each third water channel rib 3023 and the inner end face of the corresponding side end sealing ring 303, and the third water channel ribs 3023 form a plurality of water channel interlayers in the cooling water channel 305, so that the water flow speed is delayed, heat exchange between cold water and hot air in the engine base is facilitated, and the heat dissipation efficiency is improved.
As shown in fig. 1 and 5, the air guiding cover 31 is shaped like a sector, the upper end of the air guiding cover 31 is provided with a vent communicated with the inside of the centrifugal fan 1, the right side of the air guiding cover 31 is provided with an opening, the right end face of the air guiding cover is fixedly connected with the front end cover 2, and the air inlet is arranged in the right opening of the air guiding cover 31.
As shown in fig. 5, there are two groups of the air inlet holes, one group is provided with 17 circumferentially and uniformly distributed first air inlet holes 201, the other group is provided with 18 circumferentially and uniformly distributed second air inlet holes 202, and the second air inlet holes 202 are arranged inside the first air inlet holes 201 and staggered with the first air inlet holes 201.
As shown in fig. 6, there are two groups of air outlets, one group has 46 first air outlets 901 uniformly distributed circumferentially, the other group has 46 second air outlets 902 uniformly distributed circumferentially, the second air outlet 902 is arranged inside the first air outlet 901 and staggered with the first air outlet 901, and in order to ensure the strength of the rear end cover, one less hole is drilled in the first air outlet 901 and the second air outlet 902 at intervals of 7-9 hole sites.
As shown in fig. 2, the front bearing assembly includes a front bearing seat 10, a front bearing 12, a front inner bearing sleeve 11, a first labyrinth oil seal 14 and a first oil slinger 13, the front bearing seat 10 is sleeved between the outer circumferential surface of the main shaft 20 and the inner hole wall of the front end cover 2, a flange is arranged on the outer side surface and fixedly connected with the front end cover 2, the front bearing 12 is arranged in the front bearing seat 10, the first labyrinth oil seal 14 is sleeved at the front end of the outer circumferential surface of the main shaft 20 at the matching position of the front bearing seat 10, the front inner bearing sleeve 11 is arranged at the rear end of the front bearing 12, and the first oil slinger 13 is arranged at the matching position of the rear end of the front bearing 12 and the front inner bearing sleeve 11;
the rear bearing assembly comprises a rear bearing seat 15, a rear bearing 17, a rear inner bearing sleeve 16, a second labyrinth oil seal 19 and a second oil slinger 18, the rear bearing seat 15 is sleeved between the outer circular surface of the main shaft 20 and the inner hole wall of the rear end cover 9, a flange is arranged on the outer side surface and fixedly connected with the rear end cover 9, the rear bearing 17 is arranged in the rear bearing seat 15, the second labyrinth oil seal 19 is sleeved at the rear end of the outer circular surface of the main shaft 20 at the matching position of the rear bearing seat 15, the rear inner bearing sleeve 16 is arranged at the front end of the rear bearing 17, and the second oil slinger 18 is arranged at the matching position of the front end of the rear bearing 17 and the rear inner bearing sleeve 16.
As shown in fig. 7, 8 and 9, first key grooves 2301 are symmetrically arranged on the upper and lower sides of the front end surface of the flange plate of the connecting flange 23, second key grooves 2001 are arranged on the positions, corresponding to the first key grooves 2301, of the rear end surface of the main shaft 20, second flat keys 25 are arranged in the first key grooves 2301 and the corresponding second key grooves 2001, 12 bolt installation holes 2302 which are uniformly distributed circumferentially are arranged on the flange plate of the connecting flange 23, the bolt installation holes 2302 and the first key grooves 2301 are arranged in a staggered manner, matched internal thread holes 2002 are arranged on the positions, corresponding to the bolt installation holes 2302, of the rear end surface of the main shaft 20, and the flange plate of the connecting flange 23 is connected with the main shaft 20 through the second flat keys 25 and is matched with the 12 bolts for fixed connection.
As shown in fig. 2, the rear end of the connecting flange 23 is fixedly connected with a coaxial small shaft 28, a rotary transformer 29 is mounted on the outer circumferential surface of the small shaft 28, and the rotary transformer 29 is used for measuring speed to realize closed-loop control.
As shown in fig. 1 and 2, a first rain cover 33 is arranged outside the rotary transformer 29, an aviation plug connector 30 is arranged on the first rain cover 33, and a protective cover 34 is arranged outside the aviation plug connector 30; and a second rain cover 32 is arranged on the outer side of the rear end cover 9.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A large-scale inside and outside mixed double air-cooled, water-cooled permanent magnet synchronous motor, including the base, the stator that the cover locates in the base, the rotor that the cover locates in the stator and main axis fixedly connected with rotor, characterized by that there are cooling water channels in the said base lateral wall, there are two pieces of water inlet and outlet pipes to link with delivery port and water inlet of the external water cooling system separately on the lateral wall of said cooling water channel, form the water-cooling circuit, can carry on the water-cooled heat dissipation to the inside of the motor, the said main axis sets as the hollow shaft, the inside centre cover of the said main axis has universal couplings of ball cage, the rear end has connection flanges, the said universal couplings rear end of ball cage is fixedly connected with front end of connection flange, the front end fixedly connects with the axle sleeve, the said axle sleeve is used for connecting with the spindle of the slurry pump;
the rotor comprises a rotor core and a rotor support, a plurality of pieces of permanent magnet steel are embedded in the rotor core, the rotor core is fixedly connected with the rotor support, the rotor support is fixedly connected with the middle of the main shaft through a first flat key, and a front fan and a rear fan are respectively arranged on the front end face and the rear end face of the rotor support;
the front end and the rear end of the machine base are respectively provided with a front end cover and a rear end cover, an inner hole of the front end cover is connected with the outer circular surface of the main shaft through a front bearing assembly, an inner hole of the rear end cover is connected with the outer circular surface of the main shaft through a rear bearing assembly, the upper part of the front end cover is provided with a plurality of circumferentially and uniformly distributed air inlet holes, a wind scooper is arranged at the position corresponding to the air inlet holes at the upper part of the front side surface of the front end cover, a centrifugal fan is arranged above the wind scooper, the front end surface of the front end cover is provided with a stepped flange, and the stepped flange is sleeved outside the shaft sleeve and is used for being connected with a mud pump bearing seat; the rear end cover is provided with a plurality of air outlet holes which are uniformly distributed in the circumferential direction;
the centrifugal fan sucks external cold air into the motor and throws the cold air into the motor through the wind scooper and the air inlet hole, so that the air pressure in the base is increased, the rotor rotates to drive the front fan and the rear fan to synchronously rotate, the air in the base is mixed, the entering cold air and hot air flow and mix, the internal temperature is uniform, meanwhile, the cooling water channel in the base is matched with the hot air in the base to perform quick heat exchange, the cooling speed is further accelerated, the air pressure is increased, the air in the base is forced to be discharged from the air outlet hole in the rear end cover, and therefore internal and external mixing double-air cooling circulation is formed.
2. A large-sized internal and external hybrid double air-cooled and water-cooled permanent magnet synchronous motor as recited in claim 1, wherein: the engine base adopts steel welding cylindrical structure, including inner tube, urceolus, end sealing ring, inlet outlet, the inner tube cover is located in the urceolus, the end sealing ring is equipped with two, and welded seal fixed connection is in the left and right both ends of inner tube and urceolus respectively, the cooling water course is located between inner tube and the urceolus, the inlet outlet is equipped with two, and two inlet outlets separate side by side and locate on the urceolus front side lateral wall, all communicate with the cooling water course.
3. A large-sized internal and external hybrid double air-cooled and water-cooled permanent magnet synchronous motor as recited in claim 2, wherein: the outer side wall of the inner cylinder is provided with N first water channel ribs which are uniformly distributed in the circumferential direction and are parallel to the axis and N second water channel ribs which are uniformly distributed in the circumferential direction and are parallel to the axis, wherein N is a natural number greater than 1, one end of each first water channel rib is fixedly connected with the inner end face of the front side end sealing ring, a gap of 50-80 mm is reserved between the other end of each first water channel rib and the inner end face of the rear side end sealing ring, one end of each second water channel rib is fixedly connected with the inner end face of the rear side end sealing ring, a gap of 50-80 mm is reserved between the other end of each second water channel rib and the inner end face of the front side end sealing ring, and the first water channel ribs and the second water channel ribs are arranged in a staggered mode, so that an S-shaped circuitous cooling water channel is formed;
two third water channel ribs parallel to the axis are uniformly arranged between every two adjacent first water channel ribs and every two adjacent second water channel ribs on the outer side wall of the inner cylinder, gaps of 50-80 mm are reserved between the two ends of each third water channel rib and the inner end face of the corresponding side end sealing ring, and the third water channel ribs form a plurality of water channel interlayers in the cooling water channel, so that the water flow speed is delayed, heat exchange between cold water and hot air in the machine base is facilitated, and the heat dissipation efficiency is improved.
4. A large-sized internal and external hybrid double air-cooled and water-cooled permanent magnet synchronous motor as recited in claim 1, wherein: the wind scooper is fan-shaped, the upper end of the wind scooper is provided with a vent communicated with the inside of the centrifugal fan, the right side of the wind scooper is provided with an opening, the right end face of the wind scooper is fixedly connected with the front end cover, and the air inlet hole is formed in the opening at the right side of the wind scooper.
5. A large-scale inside and outside mixed double air-cooled, water-cooled permanent magnet synchronous motor as recited in claim 4, wherein: the air inlet is provided with two groups, one group is provided with a plurality of first air inlet holes which are uniformly distributed on the circumference, the other group is provided with a plurality of second air inlet holes which are uniformly distributed on the circumference, and the second air inlet holes are arranged on the inner side of the first air inlet holes and staggered with the first air inlet holes.
6. A large-sized internal and external hybrid double air-cooled and water-cooled permanent magnet synchronous motor as recited in claim 1, wherein: the exhaust vent is equipped with two sets ofly, and a set ofly is the first exhaust vent that the circumference equipartition was equipped with, and another group is equipped with the second exhaust vent that a plurality of is the circumference equipartition, the second exhaust vent is located first exhaust vent inboard to stagger the setting with first exhaust vent.
7. A large-sized internal and external hybrid double air-cooled and water-cooled permanent magnet synchronous motor as recited in claim 1, wherein: the front bearing assembly comprises a front bearing seat, a front bearing, a front inner bearing sleeve, a first labyrinth oil seal and a first oil slinger, the front bearing seat is sleeved between the outer circular surface of the main shaft and the inner hole wall of the front end cover, a flange is arranged on the outer side surface of the front bearing and fixedly connected with the front end cover, the front bearing is arranged in the front bearing seat, the first labyrinth oil seal is sleeved at the front end of the outer circular surface of the main shaft at the matching position of the front bearing seat, the front inner bearing sleeve is arranged at the rear end of the front bearing, and the first oil slinger is arranged at the matching position of the rear end of the front bearing and the front inner bearing sleeve;
the rear bearing assembly comprises a rear bearing seat, a rear bearing, a rear inner bearing sleeve, a second labyrinth oil seal and a second oil slinger, the rear bearing seat is sleeved between the outer circular surface of the main shaft and the inner hole wall of the rear end cover, a flange is arranged on the outer side surface of the rear bearing and fixedly connected with the rear end cover, the rear bearing is arranged in the rear bearing seat, the second labyrinth oil seal is sleeved at the rear end of the outer circular surface of the main shaft at the matching position of the rear bearing seat, the front end of the rear bearing is sleeved with the rear inner bearing sleeve, and the second oil slinger is arranged at the matching position of the front end of the rear bearing and the rear inner bearing sleeve.
8. A large-sized internal and external hybrid double air-cooled and water-cooled permanent magnet synchronous motor as recited in claim 1, wherein: the equal symmetry in terminal surface upper and lower both sides is equipped with first keyway before flange of flange, correspond the position with first keyway on the main shaft rear end face and all be equipped with the second keyway, first keyway is equipped with the flat key of second in with corresponding the second keyway, be equipped with the bolt mounting hole that a plurality of is the circumference equipartition on flange of flange, the bolt mounting hole sets up with first keyway staggers, correspond the position with the bolt mounting hole on the main shaft rear end face and all be equipped with matched with internal thread hole, flange of flange passes through the flat key-type connection of second with the main shaft to cooperate a plurality of bolt fixed connection.
9. A large-sized internal and external hybrid double air-cooled and water-cooled permanent magnet synchronous motor as recited in claim 1, wherein: the rear end of the connecting flange is fixedly connected with a coaxial small shaft, and a rotary transformer is mounted on the outer circular surface of the small shaft and used for measuring speed to realize closed-loop control; the rotary transformer is provided with a first rain cover outside, the first rain cover is provided with an aviation plug connector, and a protective cover is arranged outside the aviation plug connector.
10. A large-sized internal and external hybrid double air-cooled and water-cooled permanent magnet synchronous motor as claimed in any one of claims 1 to 9, wherein: and a second rain cover is arranged on the outer side of the rear end cover.
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|---|---|---|---|
| CN202210210568.0A CN114552852B (en) | 2022-03-03 | 2022-03-03 | Large-scale internal-external mixed double-air-cooling and water-cooling permanent magnet synchronous motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210210568.0A CN114552852B (en) | 2022-03-03 | 2022-03-03 | Large-scale internal-external mixed double-air-cooling and water-cooling permanent magnet synchronous motor |
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| CN114552852B CN114552852B (en) | 2024-03-01 |
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| CN201731066U (en) * | 2010-04-28 | 2011-02-02 | 陈浩 | Dynamic reducer shaft end seal structure |
| JP2011166908A (en) * | 2010-02-08 | 2011-08-25 | Toshiba Corp | Totally enclosed motor |
| CN104917338A (en) * | 2014-12-26 | 2015-09-16 | 山西汾西重工有限责任公司 | Marine vertical-type frequency-conversion three-phase asynchronous motor |
| CN208596992U (en) * | 2018-10-12 | 2019-03-12 | 威海市恒达电机厂 | A kind of torque motor |
| CN211321069U (en) * | 2019-12-30 | 2020-08-21 | 无锡市宏泰电机股份有限公司 | Frequency-conversion speed-regulation three-phase asynchronous motor |
| CN211908573U (en) * | 2020-04-15 | 2020-11-10 | 大连冠力电机科技有限公司 | Motor with centrifugal concentrated air-cooling heat radiation structure |
| CN212183236U (en) * | 2020-05-13 | 2020-12-18 | 苏州朗高电机有限公司 | Novel permanent magnet variable pitch motor structure |
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2022
- 2022-03-03 CN CN202210210568.0A patent/CN114552852B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011166908A (en) * | 2010-02-08 | 2011-08-25 | Toshiba Corp | Totally enclosed motor |
| CN201731066U (en) * | 2010-04-28 | 2011-02-02 | 陈浩 | Dynamic reducer shaft end seal structure |
| CN104917338A (en) * | 2014-12-26 | 2015-09-16 | 山西汾西重工有限责任公司 | Marine vertical-type frequency-conversion three-phase asynchronous motor |
| CN208596992U (en) * | 2018-10-12 | 2019-03-12 | 威海市恒达电机厂 | A kind of torque motor |
| CN211321069U (en) * | 2019-12-30 | 2020-08-21 | 无锡市宏泰电机股份有限公司 | Frequency-conversion speed-regulation three-phase asynchronous motor |
| CN211908573U (en) * | 2020-04-15 | 2020-11-10 | 大连冠力电机科技有限公司 | Motor with centrifugal concentrated air-cooling heat radiation structure |
| CN212183236U (en) * | 2020-05-13 | 2020-12-18 | 苏州朗高电机有限公司 | Novel permanent magnet variable pitch motor structure |
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| CN114552852B (en) | 2024-03-01 |
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