CN116995881A - Energy-saving efficient high-frequency submersible motor and manufacturing process thereof - Google Patents
Energy-saving efficient high-frequency submersible motor and manufacturing process thereof Download PDFInfo
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- CN116995881A CN116995881A CN202310997428.7A CN202310997428A CN116995881A CN 116995881 A CN116995881 A CN 116995881A CN 202310997428 A CN202310997428 A CN 202310997428A CN 116995881 A CN116995881 A CN 116995881A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 53
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 108
- 229910052802 copper Inorganic materials 0.000 claims abstract description 106
- 239000010949 copper Substances 0.000 claims abstract description 106
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000002245 particle Substances 0.000 claims abstract description 39
- 238000009413 insulation Methods 0.000 claims description 93
- 238000007493 shaping process Methods 0.000 claims description 27
- 239000003921 oil Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 22
- 230000007547 defect Effects 0.000 claims description 20
- 230000006698 induction Effects 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 8
- 230000002950 deficient Effects 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 241000555745 Sciuridae Species 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 22
- 238000001816 cooling Methods 0.000 description 20
- 230000009286 beneficial effect Effects 0.000 description 19
- 230000000694 effects Effects 0.000 description 17
- 238000010586 diagram Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000017525 heat dissipation Effects 0.000 description 10
- 239000012530 fluid Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000005347 demagnetization Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000010309 melting process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- H02K7/003—Couplings; Details of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0012—Manufacturing cage rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0056—Manufacturing winding connections
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/132—Submersible electric motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The application relates to the field of motors, and discloses an energy-saving and efficient high-frequency submersible motor and a manufacturing process thereof, wherein the high-frequency submersible motor is applied to a submersible pump, the working frequency of the high-frequency submersible motor is 100-400 Hz, and the working rotating speed of the high-frequency submersible motor is 3000-7200 r/min. The rotor of the high-frequency submersible motor is of a squirrel-cage structure, the rotor comprises an iron core, a motor shaft, copper bars and end rings, the motor shaft and the copper bars are inserted on the iron core, the copper bars are distributed around the motor shaft, the end rings are formed under the action of centrifugal force after copper particles are melted, and the end rings are connected with the copper bars in the molten state of the copper particles. The application changes the mode that the existing portable submersible electric pump and the frequency converter must be used together, and uses the high-frequency generator as a driving power supply, so that the submersible electric pump set is unnecessary to be matched with the frequency converter for use, the volume and the weight of the portable rescue equipment are reduced, and the use is more convenient.
Description
Technical Field
The application relates to the technical field of motors, in particular to a portable, energy-saving and efficient high-frequency submersible motor and a manufacturing process thereof.
Background
A submersible pump is a device having a sealed motor tightly coupled to a pump body, the entire submersible pump being immersed in the fluid to be pumped in use, the submersible pump pushing the fluid towards the surface. The submersible pump assemblies are usually equipped with watertight or encapsulated submersible motors, and are inserted directly into the water or into the liquid to be transported, i.e. immersed therein, so that they should be surrounded by the liquid to be pumped at least during operation. A general submersible pump is installed in fluid in a water tank and discharges the fluid in the water tank outwards. The submersible pump consists of a motor consisting of a rotor and a stator; a pump body which covers the motor in a sealing way and is provided with a water inlet and a water outlet; impeller assembly for sucking and discharging fluid with the rotation of motor. The motor sucks and discharges the fluid in the water tank when driving the impeller to rotate.
Patent CN107975481B (application No. 201710692410.0) discloses a submersible pump assembly and a method for operating a submersible pump assembly, in which the pump assembly is connected to a frequency converter or motor controller on a cable. Similar to the submersible pump unit in patent CN107975481B, the existing high-efficiency portable submersible pump generally needs to be matched with a frequency converter which is independently started and operated to control and a special cable for conveying electric energy. Because a large amount of harmonic components exist in the output of the frequency converter, the distance between the frequency converter and the motor is as short as possible in order to reduce the loss, and the frequency converter needs to be installed in a high-protection IP-level controller box which can move along with the water pump, the manufacturing requirement on the controller box is high, and the defects in equipment transportation, field control, safety protection and the like still exist. In addition, in the submersible pump using the permanent magnet motor, the permanent magnet motor also faces the risk of high-temperature demagnetization of the magnetic steel, and the permanent magnet motor is soaked in water, so that the stator of the permanent magnet motor has good heat dissipation, but the magnetic steel of the rotor is easy to generate the risk of demagnetization, so that the power density and the use occasion of the permanent magnet motor are limited to a certain extent.
Disclosure of Invention
The application aims to provide an energy-saving high-efficiency high-power-density high-frequency submersible motor and a manufacturing process thereof, solves the technical problem that the traditional high-frequency submersible motor and a frequency converter are inconvenient to use together, and achieves the technical effects that the submersible motor is not required to be matched with the frequency converter for use, the volume and the weight of portable rescue equipment are reduced, and the use is more convenient.
The embodiment of the application provides an energy-saving and efficient high-frequency submersible motor and a manufacturing process thereof, wherein the high-frequency submersible motor is applied to a submersible pump, the working frequency of the high-frequency submersible motor is 100Hz to 400Hz, and the working rotating speed of the high-frequency submersible motor is 3000r/min to 7200r/min.
In one possible implementation manner, the rotor of the high-frequency submersible motor is of a squirrel-cage structure, the rotor comprises an iron core, a motor shaft, copper bars and end rings, the motor shaft and the copper bars are inserted on the iron core, the copper bars are multiple and distributed around the motor shaft, the end rings are formed under the action of centrifugal force after melting copper particles, and the end rings are connected with the copper bars in the molten state of the copper particles.
In another possible implementation manner, the method is applied to manufacturing the energy-saving and efficient high-frequency submersible motor as claimed in claim 2, and the manufacturing process includes: stacking silicon steel sheets to manufacture an iron core, wherein the iron core is provided with a shaft hole and a closed slot, a motor shaft is arranged in the shaft hole, copper bars are inserted into the closed slot, and the copper bars are arranged at two ends of the protruding iron core; the method comprises the steps that heat insulation plates are respectively arranged at two ends of an iron core, a forming ring matched with the heat insulation plates is arranged on a motor shaft, one end of the forming ring is connected to the heat insulation plates in a sleeved mode, the other end of the forming ring is connected to the motor shaft in a sleeved mode, a forming cavity is formed between the heat insulation plates and the forming ring, and copper particles are filled in the forming cavity; two ends of a motor shaft are respectively connected to the rotating ends, and copper particles are heated to a molten state through an induction coil on the circumferential direction of the forming ring; the motor shaft is driven to rotate through the two rotating ends, after the end ring is formed under the action of centrifugal force, the forming ring is taken down, and the end ring is cleaned and shaped.
In another possible implementation, a spring is connected to the end face of each rotating end, the spring being used to abut the profiled ring against the end face of the core.
In another possible implementation manner, the heat insulation plate is annular, a heat insulation pipe is arranged in the middle of the heat insulation plate and is used for being connected to the motor shaft in a sleeved mode, and the end part of the heat insulation pipe is abutted with the forming ring; the shaping circle is close to and is equipped with annular first step face and annular second step face on the one end inside wall of iron core respectively, and first step face cup joints and connects on the iron core, and the second step face cup joints and connects in the circumference of heat insulating board.
In another possible implementation manner, the manufacturing process of the energy-saving and efficient high-frequency submersible motor according to claim 5 is characterized in that the heat insulation plate is provided with an annular third step surface opposite to the second step surface, and a fixing ring is connected to the third step surface in a sleeved mode and used for clamping the tail end of the forming ring from the circumferential direction.
In another possible implementation manner, the rotating end includes a fixed seat and a vibration assembly, and the vibration assembly is used for vibrating the fixed seat; heating copper particles to a molten state by an induction coil in the circumferential direction of the forming ring, further comprising: starting an induction coil in the circumferential direction of the forming ring to run for a first time period, starting a vibration assembly to run for a second time period, starting the induction coil in the circumferential direction of the forming ring to continue to run for a third time period, and heating copper particles to a molten state; the motor shaft is driven to rotate through the two rotating ends, the end ring is formed under the action of centrifugal force, and the motor further comprises: driving the motor shaft to rotate at a first speed for a fourth period of time through the two rotating ends, starting the vibration assembly to operate for a fifth period of time, and driving the motor shaft to rotate at a second speed for a sixth period of time through the two rotating ends; wherein the second speed is 2 to 5 times the first speed.
In another possible implementation manner, the end of the forming ring, which is close to the rotating end, is provided with heat radiation fins, and the heat radiation fins are arranged along the axial direction of the motor shaft; the manufacturing process further comprises the following steps: continuing to rotate the motor shaft at the third speed for a seventh period of time by the two rotating end drive motor shafts after rotating the motor shaft at the second speed for the sixth period of time by the two rotating end drive motor shafts; wherein the third speed is 1/8 to 1/5 of the first speed.
In another possible implementation, the outer side wall of the heat insulating pipe is tapered, and the outer diameter of the heat insulating pipe gradually increases from the forming ring to the heat insulating plate; cleaning and shaping the end ring, including: processing a material removing process for air holes and defect structures between the end ring and the heat insulation pipe, wherein the removed air holes and defect structures form oil grooves on the end ring; wherein, when the air holes and the defect structures are removed, 1/4 to 1/3 of the length of the heat insulation pipe is removed.
In another possible implementation manner, the thickness of the heat insulation plate gradually decreases from the center of the heat insulation plate to the edge of the heat insulation plate, protruding guide teeth are arranged on the circumference of the heat insulation plate, guide grooves are formed between adjacent guide teeth, and the second step surface and the guide teeth are mutually matched and positioned.
In another possible implementation, the heat shield is made of a heat insulating material, and an insulating coating is applied between the heat shield and the core.
The embodiment of the application also provides an energy-saving and efficient high-frequency submersible pump, which comprises the high-frequency submersible motor, wherein the high-frequency submersible pump comprises an impeller and a pump body, the impeller is arranged in the pump body, and the high-frequency submersible motor drives the impeller to rotate.
Compared with the prior art, the embodiment of the application has the beneficial effects that:
the embodiment of the application provides an energy-saving high-efficiency high-frequency submersible motor, which is applied to a submersible pump, wherein the working frequency of the high-frequency submersible motor is always 100Hz to 400Hz, so that the high-frequency submersible motor can directly use a high-frequency power supply such as a vehicle-mounted high-frequency generator and the like as a power supply on a flood prevention and drainage vehicle, further, a frequency converter is not required to be matched, and meanwhile, the working rotating speed of the high-frequency submersible motor is 3000r/min to 7200 r/min. In addition, because the motor does not need to be matched with a frequency converter for use, the motor has no harmonic wave influence generated by the frequency converter, the iron loss of the motor is reduced, long-distance electric energy transmission can be realized by adopting a common cable, the pump set can be controlled to start and stop by adapting to a common power switch, and the motor is convenient to use.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an internal structure of a rotor of an energy-saving efficient high-frequency submersible motor according to an embodiment of the application;
FIG. 2 is a schematic diagram of a rotor of an energy-saving efficient high-frequency submersible motor in accordance with an embodiment of the present application during production;
FIG. 3 is a schematic view of the partial structure of the rotor A of the high frequency submersible motor of FIG. 2 in production;
FIG. 4 is a schematic diagram of a rotor of another energy-efficient high-frequency submersible motor according to an embodiment of the application during production;
FIG. 5 is a schematic view of the partial structure of the rotor of the high frequency submersible motor of FIG. 4 at B in production;
FIG. 6 is a schematic view showing a partial structure of a rotor of a high-frequency submersible motor in production according to another embodiment of the application;
FIG. 7 is a schematic view showing a partial structure of a rotor of a high-frequency submersible motor in production according to another embodiment of the application;
FIG. 8 is a schematic left-hand view of a rotor of another high-frequency submersible motor in accordance with an embodiment of the application;
FIG. 9 is a schematic diagram of a high frequency submersible pump with energy conservation and high efficiency in an embodiment of the application;
FIG. 10 is a schematic diagram of another energy efficient high frequency submersible pump according to an embodiment of the application;
in the figure, 1, a rotor; 11. an iron core; 111. a shaft hole; 112. a closed slot; 113. a heat insulating plate; 113a, a heat insulation pipe; 113b, guide teeth; 113c, a diversion trench; 114. forming a ring; 114a, a first step surface; 114b, a second step surface; 114c, a third step surface; 114d, heat sink fins; 115. a molding cavity; 115a, an oil sump; 12. a motor shaft; 13. copper bars; 14. an end ring; 21. a rotating end; 211. a fixing seat; 212. a vibration assembly; 22. an induction coil; 23. a spring; 24. a fixing ring; 31. an impeller; 32. a pump body.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It will be understood that when an element or structure is referred to as being "mounted" or "disposed" on another element or structure, it can be directly on the other element or structure or be indirectly on the other element or structure. When an element or structure is referred to as being "connected to" another element or structure, it can be directly connected to the other element or structure or be indirectly connected to the other element or structure.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the apparatus or one component or structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Patent CN107975481B (application No. 201710692410.0) discloses a submersible pump assembly and a method for operating a submersible pump assembly, in which the pump assembly is connected to a frequency converter or motor controller on a cable. Similar to the submersible pump unit in patent CN107975481B, the existing high-efficiency portable submersible pump generally needs to be matched with a frequency converter for independent start and operation control and a special cable for transmitting electric energy. Because a large amount of harmonic components exist in the output of the frequency converter, the distance between the frequency converter and the motor is as short as possible in order to reduce the loss, and the frequency converter needs to be installed in a high-protection IP-level controller box which can move along with the water pump, the manufacturing requirement on the controller box is high, and the defects in equipment transportation, field control, safety protection and the like still exist. In addition, in the submersible pump using the permanent magnet motor, the permanent magnet motor also faces the risk of high-temperature demagnetization of the magnetic steel, and the permanent magnet motor is immersed in water, so that the stator of the permanent magnet motor has good heat dissipation, but the magnetic steel of the rotor is easy to demagnetize, so that the power density and the application occasion of the permanent magnet motor are limited to a certain extent.
Based on the above reasons, the embodiment of the application provides an energy-saving and efficient high-frequency submersible motor, which is applied to a submersible pump, and the working frequency of the high-frequency submersible motor is always 100Hz to 400Hz, so that the high-frequency submersible motor can directly use a high-frequency generator as a power supply, and further a frequency converter is not needed to be matched, and meanwhile, the working rotating speed of the high-frequency submersible motor is 3000r/min to 7200 r/min. In addition, because the motor does not need to be matched with a frequency converter for use, the motor has no harmonic wave influence generated by the frequency converter, the iron loss of the motor is reduced, long-distance electric energy transmission can be realized by adopting a common cable, the pump set can be controlled to start and stop by adapting to a common power switch, and the motor is convenient to use.
In some scenes, the energy-saving high-efficiency high-frequency submersible motor can be applied to rescue and relief equipment such as flood control pumps, and can be used on a working site without being matched with a frequency converter, so that the high-frequency submersible motor is more suitable for being used in a field environment with severe flood control work, and is higher in rotating speed, higher in lift and higher in drainage capacity in rescue and relief.
In other scenes, the energy-saving high-efficiency high-frequency submersible motor can be further applied to submersible pumps for cultivation, sewage treatment and the like, can provide larger lift in the situations of cultivation, sewage treatment and the like, is smaller in size and lighter in weight, and is more suitable for moving in a working site.
The energy-saving and efficient high-frequency submersible motor provided by the embodiment of the application is specifically described below by combining specific examples.
The embodiment of the application provides an energy-saving high-efficiency high-frequency submersible motor which is applied to a submersible pump, wherein the working frequency of the high-frequency submersible motor is 100-400 Hz, and the working rotating speed of the high-frequency submersible motor is 3000-7200 r/min.
Compared with the prior submersible pump which is generally required to be matched with a frequency converter, the frequency converter and a control cabinet thereof occupy a larger space of a submersible pump unit, and when the energy-saving efficient high-frequency submersible motor is used, the power supply with the working frequency larger than 50Hz provided by a generator can be directly used as a working power supply as the working frequency of the high-frequency submersible motor with the working frequency larger than 50Hz, so that the working speed of the high-frequency submersible motor can be improved on the same structural design without being matched with the frequency converter.
Illustratively, the operating frequency of the high frequency submersible motor in the embodiments of the application is 100Hz to 400Hz.
Illustratively, the working speed of the high-frequency submersible motor in the embodiment of the application is 3000r/min to 7200r/min.
The implementation mode has the beneficial effects that as the high-frequency submersible motor directly uses the high-frequency power supply, a frequency converter is not needed to be matched for use, the size and weight of the submersible pump are reduced, the submersible pump is suitable for being used in a field environment without commercial power to generate direct driving of the high-frequency generator, and the convenience in use of the high-frequency submersible motor is improved. In addition, when the high-frequency submersible motor is used, the use cost and the maintenance cost of the submersible pump are reduced due to the fact that the high-frequency submersible motor is not necessarily matched with the variable frequency control cabinet.
The beneficial effect that foretell realization mode brought also lies in, under the same motor structural design, because the operating power that uses the frequency that is higher than the commercial power, this high frequency submersible motor has improved the rotational speed of immersible pump, is favorable to promoting the work efficiency when the pump lift and the water pump use.
In some implementations, the rotor 1 of the high-frequency submersible motor is in a squirrel-cage structure, the rotor 1 comprises an iron core 11, a motor shaft 12, copper bars 13 and end rings 14, the motor shaft 12 and the copper bars 13 are inserted on the iron core 11, the copper bars 13 are a plurality of and distributed around the motor shaft 12, the end rings 14 are formed under the action of centrifugal force after copper particles are melted, and the end rings 14 are connected with the copper bars 13 in a molten state of the copper particles.
Structurally, the high-frequency submersible motor comprises a stator and a rotor 1, wherein the stator is connected to the outside of the rotor 1 in a sleeved mode, and the stator and the rotor 1 are matched with each other to drive the rotor 1 to rotate for working.
Fig. 1 is a schematic diagram of an internal structure of a rotor of an energy-saving and efficient high-frequency submersible motor in an embodiment of the application, and as shown in fig. 1, structurally, the rotor 1 comprises an iron core 11, a motor shaft 12, copper bars 13 and an end ring 14, wherein the motor shaft 12 is a rotating shaft of the rotor 1, and the copper bars 13 and the end ring 14 are both copper structures.
Structurally, as shown in fig. 1, a motor shaft 12 and copper bars 13 are inserted on an iron core 11, the copper bars 13 are plural and distributed around the motor shaft 12, and the copper bars 13 and end rings 14 are connected to each other, so that the copper bars 13 and the end rings 14 together form a squirrel-cage structure.
When the rotor 1 is produced, the end ring 14 is formed under the action of centrifugal force after the copper material particles are melted, so that the end ring 14 can discharge bubbles in the copper material after the copper material particles are melted under the action of the centrifugal force, the compactness of the structure of the end ring 14 is improved, and the copper bars 13 of the end ring 14 and the end ring 14 are combined more tightly.
The housing of the high-frequency submersible motor in the embodiment of the application may be a sealed structure, and one end of the housing of the high-frequency submersible motor is filled with cooling oil, so that the rotor 1 can dissipate heat and cool through the cooling oil filled at one end in the housing when the rotor 1 is in use.
The realization mode has the beneficial effects that the copper rotor is used by the high-frequency submersible motor, so that the industry blank that the copper rotor is not used by the existing submersible motor is filled, the technical prejudice is overcome on the basis that the heat dissipation effect of the submersible motor is good, the working efficiency of the submersible motor is further improved, the high-frequency submersible motor is more energy-saving and efficient, and the power density and the service life of the motor are further improved.
The realization mode has the beneficial effects that the end ring of the squirrel-cage copper rotor is formed in a melting and centrifugal forming mode, so that the compactness and the forming quality of the end ring are improved, the copper bars of the end ring and the end ring are combined more tightly, and the production precision and the production quality of the copper rotor are also improved.
Patent CN107508393A (application number: 201710830091.5) discloses a manufacturing process of a copper rotor of an asynchronous motor, wherein an end ring is manufactured by using a pure copper powder metallurgy process, and an manufactured rotor core, the end ring and a copper bar are assembled and then riveted into a whole by induction heating, so that the copper rotor of the asynchronous motor is formed. In practical use, the copper rotor is often in a high-speed rotation state, and the copper rotor has higher temperature due to a resistance effect in rotation, so that the strength requirement on the end ring is also higher. The connection manner of the end ring and the copper bar provided in the patent CN107508393a is convenient to process, but the strength of the end ring is difficult to meet the requirement in practical use, resulting in poor practical use effect of the end ring produced by the method in the patent CN107508393 a.
The embodiment of the application also provides a manufacturing process applied to manufacturing the energy-saving and efficient high-frequency submersible motor, which comprises S110 to S140, and the following specific description of S110 to S140 is provided.
S110, stacking silicon steel sheets to manufacture an iron core 11, wherein the iron core 11 is provided with a shaft hole 111 and a closed slot 112, a motor shaft 12 is arranged in the shaft hole 111, a copper bar 13 is inserted into the closed slot 112, and the copper bar 13 protrudes out of two ends of the iron core 11.
Fig. 2 is a schematic structural diagram of a rotor of an energy-saving and efficient high-frequency submersible motor in the embodiment of the application during production, and fig. 3 is a schematic structural diagram of a part a of the rotor of the high-frequency submersible motor in production in fig. 2, as shown in fig. 2 and 3, in structure, a shaft hole 111 arranged on an iron core 11 is used for installing a motor shaft 12, a closed slot 112 arranged on the iron core 11 is used for installing copper bars 13, and the copper bars 13 are arranged to protrude out of two ends of the iron core 11, so that end rings 14 can be conveniently processed on the copper bars 13 later.
S120, respectively installing heat insulation plates 113 at two ends of the iron core 11, installing forming rings 114 matched with the heat insulation plates 113 on the motor shaft 12, wherein one ends of the forming rings 114 are connected to the heat insulation plates 113 in a sleeved mode, the other ends of the forming rings 114 are connected to the motor shaft 12 in a sleeved mode, forming a forming cavity 115 between the heat insulation plates 113 and the forming rings 114, and filling copper particles into the forming cavity 115.
As shown in fig. 2 and 3, the heat insulation plates 113 are structurally installed at both ends of the core 11, respectively, for heat insulation treatment with respect to the core 11. The molding ring 114 mounted on the motor shaft 12 is used for molding the end ring 14, and the heat insulating plate 113 and the molding ring 114 cooperate with each other to mold the end ring 14.
When in use, the heat insulation plate 113 is sleeved on the motor shaft 12, then one end of the forming ring 114 is sleeved on the heat insulation plate 113, and the other end of the forming ring 114 is sleeved on the motor shaft 12, so that a forming cavity 115 is formed between the heat insulation plate 113 and the forming ring 114, and the forming cavity 115 is used for forming the end ring 14.
In the production of the end ring 14, the forming cavity 115 may be filled with copper particles, which melt to form the end ring 14.
And S130, respectively connecting two ends of the motor shaft 12 to the rotating ends 21, and heating copper particles to a molten state through the induction coil 22 in the circumferential direction of the forming ring 114.
As shown in fig. 2 and 3, structurally, by connecting the rotating ends 21 to both ends of the motor shaft 12, respectively, driving of both ends of the motor shaft 12 can be achieved by the rotating ends 21.
When the copper material forming device is used, firstly, copper material particles are heated to a molten state through the induction coil 22 on the circumferential direction of the forming ring 114, and then, the two ends of the motor shaft 12 can be driven through the rotating end 21, so that the motor shaft 12 drives the copper material particles in the molten state to be formed through centrifugal force when rotating.
Illustratively, the rotating ends 21 may be two synchronous driving rotating seat structures, the rotating ends 21 may be two ends of a machine tool, and the two rotating ends 21 may be relatively close to or far away from each other, so that the motor shaft 12 is clamped and fixed by the two rotating ends 21, or the motor shaft 12 is removed from between the two rotating ends 21, and the motor shaft 12 can be driven to rotate when the two rotating ends 21 rotate.
And S140, driving the motor shaft 12 to rotate through the two rotating ends 21, and removing the forming ring 114 after forming the end ring 14 under the action of centrifugal force, so as to clean and shape the end ring 14.
In use, as shown in fig. 2 and 3, the motor shaft 12 is driven to rotate by the two rotating ends 21, and the end ring 14 is formed under the centrifugal force, so that the end ring 14 with compact texture can be obtained.
When in use, after the forming ring 114 is removed, the heat insulation plate 113 keeps on the end face of the iron core 11, and the end ring 14 is cleaned and shaped, so that the squirrel-cage structure of the copper rotor after processing is obtained.
The realization mode has the beneficial effects that the motor shaft is insulated by the heat insulation plate, so that the heat insulation effect of the motor shaft is ensured by the heat insulation plate, and the end ring is formed at high temperature after the copper particles are heated.
The end ring is formed by the heat insulation plate and the forming ring together, and then the end ring can be formed by a die composed of the heat insulation plate and the forming ring, so that the quick production and processing are facilitated, and the production precision of the end ring is high. Meanwhile, the end ring is molded under the action of centrifugal force, so that impurities such as bubbles in the copper liquid can be discharged, and the molding quality of the end ring is improved.
In some implementations, a spring 23 is connected to an end face of each rotating end 21, and the springs 23 are used to abut the forming ring 114 against an end face of the core 11.
As shown in fig. 2 and 3, in use, a spring 23 is connected to an end face of each of the rotary ends 21, the spring 23 being capable of providing pressure to the outside in a compressed state.
When in use, the forming ring 114 is abutted against the end face of the iron core 11 through the spring 23, and the spring 23 rotates along with the rotating end 21, so that the rotating end 21 can drive the spring 23 to rotate in the rotating process, and the spring 23 can keep the forming ring 114 in a clamping state.
The beneficial effects that foretell realization mode brought lie in, carry out spacingly to the shaping circle through the spring, guaranteed the side direction pressure of shaping circle when the shaping end ring, can guarantee the shaping quality of end ring and the stability of whole production facility in operation, guaranteed the security of production process.
In some implementations, the heat insulation plate 113 is annular, a heat insulation pipe 113a is arranged in the middle of the heat insulation plate 113, the heat insulation pipe 113a is used for being connected to the motor shaft 12 in a sleeved mode, and the end portion of the heat insulation pipe 113a is abutted with the forming ring 114.
As shown in fig. 2 and 3, the annular heat insulating plate 113 can insulate the core 11 on the end surface of the core 11.
As shown in fig. 2 and 3, the heat insulation pipe 113a is connected to the motor shaft 12 in a socket-joint manner, so that the heat insulation pipe 113a provided in the middle of the heat insulation plate 113 can insulate the motor shaft 12 and can cooperate with the heat insulation plate 113 to jointly insulate the core 11 and the motor shaft 12.
When in use, the end of the heat insulating tube 113a is abutted against the forming ring 114, so that the sealing property between the heat insulating tube 113a and the forming ring 114 can be ensured, and the leakage of copper liquid during the forming of the end ring 14 can be ensured.
In some implementations, an annular first step surface 114a and an annular second step surface 114b are respectively arranged on an inner side wall of the end, close to the iron core 11, of the forming ring 114, the first step surface 114a is connected to the iron core 11 in a sleeved mode, and the second step surface 114b is connected to the thermal insulation plate 113 in a sleeved mode in the circumferential direction.
As shown in fig. 2 and 3, the first step surface 114a can be structurally mated with the core 11 such that the core 11 positions the molding ring 114 through the first step surface 114 a.
As shown in fig. 2 and 3, structurally, the second stepped surface 114b is coupled to the heat insulation plate 113 in a socket manner in the circumferential direction, so that the molding ring 114 positions the heat insulation plate 113 through the second stepped surface 114b and seals the heat insulation plate 113 from the circumferential direction through the second stepped surface 114 b.
The beneficial effect that foretell realization mode brought lies in, cooperates between through first step face and the iron core, and then fixes a position the shaping circle through the iron core, has guaranteed the stability of shaping circle. Moreover, through the cooperation between second step face and the heat insulating board, seal the circumference of heat insulating board, guaranteed the leakproofness between shaping circle and the heat insulating board, improved the construction quality of end ring, also can avoid copper liquid to spill between shaping circle and the heat insulating board to can avoid copper liquid to spill between shaping circle and the heat insulating board jointly through first step face and second step face, guaranteed the security and the shaping effect of shaping process.
In some implementations, the heat insulating plate 113 is provided with a third annular step surface 114c opposite to the second step surface 114b, and a fixing ring 24 is sleeved on the third step surface 114c, where the fixing ring 24 is used for clamping the end of the forming ring 114 from the circumferential direction.
Fig. 4 is a schematic structural diagram of a rotor of another energy-saving and efficient high-frequency submersible motor in the embodiment of the application during production, and fig. 5 is a schematic structural diagram of a part B of the rotor of the high-frequency submersible motor in production in fig. 4, as shown in fig. 4 and 5, in structure, by sleeving a fixing ring 24 on a third step surface 114c, the tail end of the forming ring 114 can be clamped from the circumferential direction by the fixing ring 24, and the fixing stability of the tail end of the forming ring 114 on the iron core 11 can be improved.
Since the end of the shaping ring 114 is clamped circumferentially by the fixing ring 24, the shaping ring 114 can be fixed to the core 11 from the end so that a certain distance is provided between the fixing ring 24 and the induction coil 22.
The beneficial effect that foretell realization mode brought lies in, establishes the retainer plate through the cover on the third step face to the retainer plate compresses tightly the shaping circle on the iron core, can further improve the stability when shaping circle installs through the retainer plate.
The realization mode has the beneficial effects that the forming ring is fixed on the iron core from the tail end, so that a certain distance is reserved between the fixing ring and the induction coil, the tail end of the forming ring is pressed on the iron core in a fixed mode, interference between the forming ring and the induction coil is avoided, and the safety of the end ring during forming and the convenience of equipment installation are improved.
In some implementations, the rotating end 21 includes a stationary base 211 and a vibration assembly 212, the vibration assembly 212 being configured to vibrate the stationary base 211.
As shown in fig. 4, in the structure, a fixing opening is formed in the fixing base 211, the rotating end 21 clamps and fixes the motor shaft 12 through the fixing opening in the fixing base 211, and when the vibration assembly 212 vibrates the fixing base 211, the vibration of the fixing base 211 can be transmitted to the motor shaft 12, and then the vibration can be transmitted to the heat insulation plate 113 and the forming ring 114 through the motor shaft 12.
In some implementations, the heating of the copper particles to a molten state by the induction coil 22 circumferentially of the forming ring 114, as described above, further includes: the induction coil 22 in the circumferential direction of the forming ring 114 is activated to operate for a first period of time, the vibration assembly 212 is activated to operate for a second period of time, and the induction coil 22 in the circumferential direction of the forming ring 114 is activated to continue to operate for a third period of time to heat the copper particles to a molten state.
In use, as shown in fig. 4, after the induction coil 22 is activated in the circumferential direction of the forming ring 114 to operate for a first period of time, the copper particles are heated for a first period of time, at which time the copper particles have begun to melt by heating, the tightness between the copper particles that begin to melt by heating can be improved by activating the vibration assembly 212 to operate for a second period of time, the rate at which the copper particles melt and fuse with each other can be improved, and air bubbles between the melted copper particles can be initially discharged.
By way of example, the vibration assembly 212 may include a motor and an eccentric rotor fixedly coupled to the motor.
Illustratively, the first time period may be the time required to heat the copper particles to begin melting, and the length of the first time period may be 15s.
Illustratively, the second time period may be of a length of
In use, the induction coil 22 in the circumferential direction of the forming ring 114 is continuously started again to continue to operate for a third period of time to heat the copper particles to a molten state, and after the bubbles between the molten copper particles are initially discharged, the copper particles can be heated to a completely molten state by continuously heating the copper particles, so that the subsequent forming end ring 14 is facilitated.
Illustratively, the third time period may be the time required to heat the copper particles to a full melting, and the length of the third time period may be 30s.
In some implementations, the motor shaft 12 is driven to rotate by two rotating ends 21, forming the end ring 14 under centrifugal force, further comprising: the motor shaft 12 is driven to rotate at a first speed for a fourth period of time by the two rotating ends 21, and the vibration assembly 212 is activated to operate for a fifth period of time, and the motor shaft 12 is driven to rotate at a second speed for a sixth period of time by the two rotating ends 21.
In use, the motor shaft 12 is driven to rotate at a first speed for a fourth period of time by the two rotating ends 21, so that the copper liquid is driven to rotate at the first speed to perform preliminary centrifugal forming on the copper liquid, and the end ring 14 can be preliminarily formed.
The first speed may have a value of 50r/min
Illustratively, the fourth time period may be 1min in length.
In use, the vibration assembly 212 is enabled to vibrate the heat insulation plate 113 and the forming ring 114 on the motor shaft 12 by starting the vibration assembly 212 to operate for a fifth period of time, so as to vibrate the copper liquid between the heat insulation plate 113 and the forming ring 114, and further discharge bubbles in the copper liquid after the bubbles are primarily discharged by the fourth period of time.
Illustratively, the fifth time period may be 10s in length.
When the centrifugal forming device is used, after the bubbles in the copper liquid are discharged in the third time period and the fourth time period, the motor shaft 12 can be driven by the two rotating ends 21 to rotate at the second speed for the sixth time period, and centrifugal forming of the end ring 14 can be further realized by driving the copper liquid to rotate.
Illustratively, the second speed is 2 to 5 times the first speed.
The second speed may have a value of 100r/min, 200r/min, or 250r/min, for example.
Illustratively, the sixth time period may be 2 minutes in length.
The realization mode has the beneficial effects that the copper particles are melted at first and then vibrated by the vibration assembly, and then the copper particles are melted continuously, so that residual bubbles in the melting process of the copper liquid can be discharged through the vibration assembly, the discharging effect of the bubbles in the melting process of the copper liquid is improved, and the forming quality of the end ring is improved.
The beneficial effect that foretell realization mode brought also lies in, at the in-process of shaping end ring, carries out preliminary centrifugal shaping to the copper liquid at first, then the vibration of rethread vibrating module drive copper liquid, and follow-up continuous centrifugal shaping to the copper liquid can improve the compactness when shaping the copper liquid through vibrating module, has improved the discharge effect to the bubble at the copper liquid in-process of carrying out centrifugal shaping to the copper liquid, has improved the shaping quality and the compactness of end ring, has improved motor rotor's life.
In some implementations, the end of the profiled ring 114 near the rotating end 21 is provided with cooling fins 114d, the cooling fins 114d being arranged along the axial direction of the motor shaft 12.
Fig. 6 is a schematic view of a partial structure of a rotor of a high-frequency submersible motor in production according to another embodiment of the application, as shown in fig. 6, in structure, heat dissipation fins 114d are used for dissipating heat from the forming ring 114, and the heat of the forming ring 114 can be dissipated through the heat dissipation fins 114d, so as to increase the heat dissipation speed of the end ring 14 in the forming ring 114.
In some implementations, the manufacturing process described above further includes: after the motor shaft 12 is driven to rotate at the second speed for the sixth period of time by the two rotating ends 21, the motor shaft 12 is driven to rotate at the third speed for the seventh period of time by the two rotating ends 21.
In use, as shown in fig. 6, after the motor shaft 12 is driven at the second speed for a sixth period of time by the two rotating ends 21 described above, the shaping of the end ring 14 is completed. Then, the motor shaft 12 is driven by the two rotating ends 21 to rotate at the third speed for the seventh period of time to cool the end ring 14, increasing the production speed of the end ring 14.
Illustratively, the seventh time period may be 5 minutes in length.
The third speed may be, for example, 10r/min.
The third speed is illustratively 1/8 to 1/5 of the first speed.
The realization mode has the beneficial effects that the end ring is radiated after the end ring is formed through the radiating fins, so that the cooling speed of the end ring can be improved through the radiating fins. Meanwhile, the motor shaft 12 is driven to rotate to drive the forming ring 114 to rotate, so that the radiating effect of the radiating fins in the air can be improved, the cooling speed of the end ring can be further improved through the radiating fins in rotation, and the production speed of the end ring is improved.
In some implementations, the outer sidewall of the insulating tube 113a is tapered, and the outer diameter of the insulating tube 113a gradually increases from the forming ring 114 toward the insulating plate 113.
Fig. 6 is a schematic view of a partial structure of a rotor of another high-frequency submersible motor in production according to an embodiment of the present application, as shown in fig. 6, in structure, an outer side wall of a heat insulation pipe 113a is tapered, and an outer diameter of the heat insulation pipe 113a gradually increases from a forming ring 114 to a heat insulation plate 113, so that when a pair of end rings 14 is formed, an end of the heat insulation pipe 113a near the forming ring 114 is smaller from a center line of a motor shaft 12 in a cavity of the forming end ring 14, so that copper liquid can fully fill a side near the heat insulation plate 113 on the outer side wall of the heat insulation pipe 113a under centrifugal force, and a cavity formed in a process of forming the end rings 14 by copper liquid remains at a side of the heat insulation pipe 113a near the forming ring 114.
In some implementations, the cleaning and shaping of the end ring 14 described above includes: the air holes and the defective structure between the end ring 14 and the heat insulating pipe 113a are subjected to a material removing process, and the removed air holes and defective structure form oil grooves 115a on the end ring 14. Wherein, when the air holes and the defective structure are removed, 1/4 to 1/3 of the length of the heat insulation pipe 113a is removed.
In use, as shown in fig. 6, the air holes and the defect structures between the end ring 14 and the heat insulating tube 113a can be removed by performing a material removal process, so that the air holes and the defect structures can be removed during the process of forming the end ring 14, and the overall structure of the end ring 14 can avoid resistance loss caused by the air holes and the defect structures.
Meanwhile, the removed air holes and defect structures form oil grooves 115a on the end ring 14, and the oil grooves 115a can accommodate cooling oil in the sealed motor, so that the heat dissipation effect of the rotor 1 of the motor can be improved by the cooling oil in the oil grooves 115a.
Wherein, when the air holes and the defect structures are removed, 1/4 to 1/3 of the length of the heat insulation pipe 113a is removed, namely, when the air holes and the defect structures are removed, the air holes and the defect structures are removed from one end of the heat insulation pipe 113a until 1/4 to 1/3 of the length of the heat insulation pipe 113a is reached, the air holes and the defect structures can be completely removed, and the effective removal of the air holes and the defect structures is achieved.
The implementation mode has the beneficial effects that the residual air holes and the defect structures are removed by processing the material removal at the center position, so that the forming quality of the center of the end ring is improved, and the consumption of electric energy by the resistance of the air holes and the defect structures of the end ring is reduced. Meanwhile, the removed air holes and the defect structure form an oil groove, and cooling oil is contained in the oil groove formed by the removed air holes and the defect structure, so that the circulation and heat dissipation speed of the cooling oil on the end ring is improved, and the heat dissipation effect of the end ring is improved.
In some implementations, the thickness of the heat insulation plate 113 gradually decreases from the center of the heat insulation plate 113 to the edge of the heat insulation plate 113, protruding guide teeth 113b are provided on the circumference of the heat insulation plate 113, guide grooves 113c are formed between adjacent guide teeth 113b, and the second step surface 114b and the guide teeth 113b are positioned in cooperation with each other.
Fig. 7 is a schematic view showing a partial structure of a rotor of another high-frequency submersible motor in production according to an embodiment of the present application, and fig. 8 is a schematic view showing a left-hand structure of a rotor of another high-frequency submersible motor in production according to an embodiment of the present application, as shown in fig. 7 and 8, in which the thickness of the heat shield 113 is gradually reduced from the center of the heat shield 113 to the edge of the heat shield 113, and after the heat shield 113 is attached with cooling oil, the cooling oil is allowed to be thrown away from the thickness of the heat shield 113 from the center of the heat shield 113 to the edge of the heat shield 113 as the heat shield 113 is rotated, thereby improving the circulation effect of the cooling oil.
As shown in fig. 7 and 8, in the structure, protruding guide teeth 113b are provided on the circumference of the heat insulation plate 113, guide grooves 113c are formed between adjacent guide teeth 113b, and the groove structure of the guide grooves 113c can accommodate cooling oil, so that when the heat insulation plate 113 rotates after the guide grooves 113c accommodate cooling oil, the cooling oil can be thrown out from the guide grooves 113c through the guide grooves 113c on the heat insulation plate 113, the circulation speed of the cooling oil on the guide grooves 113c in the sealed motor is improved, and the cooling speed of the rotor of the motor is improved.
Structurally, the second step surface 114b of the forming ring 114 and the guide teeth 113b are mutually matched and positioned, so that the forming ring 114 can mutually match and position and seal the heat insulation plate 113 through the second step surface 114b and the guide teeth 113b, the tightness between the heat insulation plate 113 and the forming ring 114 is improved, and the production effect of the end ring 14 is improved.
The realization mode has the beneficial effects that the thickness of the heat insulation plate is gradually reduced from the center to the edge, so that the heat insulation plate can better throw cooling oil to the periphery of the heat insulation plate, and further heat on the heat insulation plate and the end ring is brought out, and the heat dissipation effect of the heat insulation plate and the end ring is improved. Meanwhile, the edge of the heat insulation plate is provided with guide teeth, and guide grooves are formed between the guide teeth, so that the heat insulation plate also plays a role in circularly driving cooling oil in the motor through the guide teeth.
The realization mode has the beneficial effects that the second step surface and the guide teeth are matched with each other to position and seal the heat insulation plate, so that the tightness between the heat insulation plate and the forming ring is improved, and the production effect of the end ring is improved.
In some implementations, the heat shield 113 is made of a heat-insulating material, and an insulating coating is applied between the heat shield 113 and the core 11.
Structurally, the heat shield 113 is made of a heat-insulating material, so that the heat shield 113 can maintain the insulating effect of the end ring 14 and the core 11 in use of the motor,
meanwhile, an insulating coating is coated between the insulating plate 113 and the iron core 11, so that the insulating effect between the insulating plate 113 and the iron core 11 can be further ensured.
The realization mode has the beneficial effects that insulation is realized between the heat insulation plate and the end ring, conduction between the end ring and the iron core is avoided, stray caused by the iron core is reduced, and the working efficiency of the motor is improved.
The embodiment of the application also provides an energy-saving and high-efficiency high-frequency submersible pump, and fig. 9 is a schematic structural diagram of the energy-saving and high-efficiency high-frequency submersible pump in the embodiment of the application, and as shown in fig. 9, the high-frequency submersible pump comprises the high-frequency submersible motor 1, and further comprises an impeller 31 and a pump body 32, wherein the impeller 31 is arranged in the pump body 32, and the high-frequency submersible motor 1 drives the impeller 31 to rotate.
Fig. 10 is a schematic structural diagram of another energy-saving and efficient high-frequency submersible pump according to an embodiment of the application, and as shown in fig. 9, the high-frequency submersible pump comprises the high-frequency submersible motor 1, and further comprises an impeller 31 and a pump body 32, wherein the impeller 31 is installed in the pump body 32, and the high-frequency submersible motor 1 drives the impeller 31 to rotate.
It should be noted that the high-frequency submersible motor 1 may be used on an axial-flow submersible pump or a centrifugal submersible pump, the energy-saving high-efficiency high-frequency submersible pump shown in fig. 9 is an axial-flow submersible pump, the energy-saving high-efficiency high-frequency submersible pump shown in fig. 10 is a centrifugal submersible pump, and the blade form of the high-frequency submersible pump to which the high-frequency submersible motor 1 is applied is not limited in the embodiment of the present application.
The realization mode has the beneficial effects that the high-frequency submersible motor 1 in the realization mode is used in the submersible pump, so that the submersible pump is not necessary to be matched with a variable frequency control cabinet for use, the cost of the submersible pump is reduced, and the use convenience of the submersible pump is improved. Meanwhile, the high-frequency power supply of the generator is directly used, so that the lift and the power of the submersible pump can be improved compared with those of a submersible pump driven by mains supply on the same structural parameters.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.
Claims (10)
1. The energy-saving efficient high-frequency submersible motor is characterized in that the high-frequency submersible motor is applied to a submersible pump, the working frequency of the high-frequency submersible motor is 100-400 Hz, and the working rotating speed of the high-frequency submersible motor is 3000-7200 r/min.
2. The energy-saving efficient high-frequency submersible motor according to claim 1, wherein a rotor (1) of the high-frequency submersible motor is of a squirrel cage structure, the rotor (1) comprises an iron core (11), a motor shaft (12), copper bars (13) and end rings (14), the motor shaft (12) and the copper bars (13) are inserted on the iron core (11), the copper bars (13) are multiple and distributed around the motor shaft (12), the end rings (14) are formed under the action of centrifugal force after copper particles are melted, and the end rings (14) are connected with the copper bars (13) in a molten state of the copper particles.
3. A process for manufacturing an energy-saving and efficient high-frequency submersible motor, which is applied to manufacturing the energy-saving and efficient high-frequency submersible motor as claimed in claim 2, comprising:
The method comprises the steps of superposing silicon steel sheets to manufacture an iron core (11), wherein an axle hole (111) and a closed slot (112) are formed in the iron core (11), a motor shaft (12) is arranged in the axle hole (111), a copper bar (13) is inserted into the closed slot (112), and the copper bar (13) protrudes out of two ends of the iron core (11);
the method comprises the steps that heat insulation plates (113) are respectively arranged at two ends of an iron core (11), a forming ring (114) matched with the heat insulation plates (113) is arranged on a motor shaft (12), one end of the forming ring (114) is connected to the heat insulation plates (113) in a sleeved mode, the other end of the forming ring (114) is connected to the motor shaft (12) in a sleeved mode, a forming cavity (115) is formed between the heat insulation plates (113) and the forming ring (114), and copper particles are filled in the forming cavity (115);
two ends of the motor shaft (12) are respectively connected to a rotating end (21), and the copper particles are heated to a molten state through an induction coil (22) in the circumferential direction of the forming ring (114);
the motor shaft (12) is driven to rotate through the two rotating ends (21), after the end ring (14) is formed under the action of centrifugal force, the forming ring (114) is taken down, and the end ring (14) is cleaned and shaped.
4. A process for manufacturing an energy efficient high frequency submersible motor according to claim 3, characterized in that a spring (23) is connected to the end face of each rotating end (21), said spring (23) being adapted to abut said profiled ring (114) against the end face of said core (11).
5. The process for manufacturing the energy-saving and efficient high-frequency submersible motor according to claim 4, wherein the heat insulation plate (113) is annular, a heat insulation pipe (113 a) is arranged in the middle of the heat insulation plate (113), the heat insulation pipe (113 a) is used for being connected to the motor shaft (12) in a sleeved mode, and the end portion of the heat insulation pipe (113 a) is abutted to the forming ring (114);
the shaping circle (114) is close to be equipped with annular first step face (114 a) and annular second step face (114 b) on the one end inside wall of iron core (11) respectively, first step face (114 a) cup joints and connects on iron core (11), second step face (114 b) cup joints and connects in the circumference of heat insulating board (113).
6. The manufacturing process of the energy-saving and efficient high-frequency submersible motor according to claim 5, wherein the heat insulation plate (113) is provided with an annular third step surface (114 c) on the opposite side of the second step surface (114 b), a fixing ring (24) is connected to the third step surface (114 c) in a sleeved mode, and the fixing ring (24) is used for clamping the tail end of the forming ring (114) from the circumferential direction.
7. The manufacturing process of the energy-saving and efficient high-frequency submersible motor according to claim 6, wherein the rotating end (21) comprises a fixed seat (211) and a vibration assembly (212), and the vibration assembly (212) is used for vibrating the fixed seat (211);
Heating the copper particles to a molten state by an induction coil (22) in the circumferential direction of the forming ring (114), further comprising:
starting an induction coil (22) in the circumferential direction of the forming ring (114) to operate for a first time period, starting the vibration assembly (212) to operate for a second time period, starting the induction coil (22) in the circumferential direction of the forming ring (114) to continue to operate for a third time period, and heating the copper particles to a molten state;
the motor shaft (12) is driven to rotate through the two rotating ends (21), and the end ring (14) is formed under the action of centrifugal force, and the motor further comprises:
driving the motor shaft (12) to rotate at a first speed for a fourth period of time through the two rotating ends (21), starting the vibration assembly (212) to operate for a fifth period of time, and driving the motor shaft (12) to rotate at a second speed for a sixth period of time through the two rotating ends (21); wherein the second speed is 2 to 5 times the first speed.
8. The process for manufacturing the energy-saving and efficient high-frequency submersible motor according to claim 7, wherein the end of the forming ring (114) close to the rotating end (21) is provided with a heat radiation fin (114 d), and the heat radiation fin (114 d) is arranged along the axial direction of the motor shaft (12); the manufacturing process further comprises:
Continuing to drive the motor shaft (12) to rotate at a third speed for a seventh period of time through the two rotating ends (21) after the motor shaft (12) is driven to rotate at the second speed for the sixth period of time through the two rotating ends (21); wherein the third speed is 1/8 to 1/5 of the first speed.
9. The process for manufacturing an energy-efficient high-frequency submersible motor according to claim 8, wherein an outer side wall of the heat insulation pipe (113 a) is tapered, and an outer diameter of the heat insulation pipe (113 a) is gradually increased from the molding ring (114) to the heat insulation board (113); cleaning and shaping the end ring (14), comprising:
removing material from the air holes and defect structures between the end ring (14) and the heat insulation pipe (113 a), wherein the removed air holes and defect structures form oil grooves (115 a) on the end ring (14); wherein, when the air holes and the defective structure are removed, 1/4 to 1/3 of the length of the heat insulation pipe (113 a) is removed.
10. An energy-saving efficient high-frequency submersible pump, characterized in that the high-frequency submersible pump comprises a high-frequency submersible motor (1) according to any one of claims 1 to 9, the high-frequency submersible pump comprises an impeller (31) and a pump body (32), the impeller (31) is installed in the pump body (32), and the high-frequency submersible motor (1) drives the impeller (31) to rotate.
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| CN210724349U (en) * | 2019-12-02 | 2020-06-09 | 哈尔滨电气动力装备有限公司 | End ring structure of main cooling fan motor rotor of high-temperature gas cooled reactor nuclear power plant |
| CN218376940U (en) * | 2022-10-18 | 2023-01-24 | 上海奥一泵业制造有限公司 | Portable bottom suction centrifugal flow submersible pump |
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| CN107749702A (en) * | 2017-11-02 | 2018-03-02 | 新界泵业集团股份有限公司 | Copper bar rotor of motor blank structure and its processing method |
| CN210724349U (en) * | 2019-12-02 | 2020-06-09 | 哈尔滨电气动力装备有限公司 | End ring structure of main cooling fan motor rotor of high-temperature gas cooled reactor nuclear power plant |
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| CN116995881B (en) | 2024-02-23 |
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