CN211127434U - Permanent magnet synchronous motor directly-driven submersible pump - Google Patents
Permanent magnet synchronous motor directly-driven submersible pump Download PDFInfo
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- CN211127434U CN211127434U CN201921998998.3U CN201921998998U CN211127434U CN 211127434 U CN211127434 U CN 211127434U CN 201921998998 U CN201921998998 U CN 201921998998U CN 211127434 U CN211127434 U CN 211127434U
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 52
- 230000008878 coupling Effects 0.000 claims abstract description 28
- 238000010168 coupling process Methods 0.000 claims abstract description 28
- 238000005859 coupling reaction Methods 0.000 claims abstract description 28
- 230000001681 protective effect Effects 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses an oil-submersible pump directly driven by a permanent magnet synchronous motor, which comprises a casing, wherein the permanent magnet synchronous motor is arranged in the casing, the permanent magnet synchronous motor comprises a stator component and a rotor component which are matched with each other, and the rotor component is provided with a rotor shaft; a first step shaft and a second step shaft are respectively arranged at two ends of the rotor shaft; the first stepped shaft is movably connected to the first bearing seat through a first bearing; the second stepped shaft is connected through a second bearing and penetrates through a second bearing seat; the end part of the second stepped shaft is connected with a universal coupling, the other end of the universal coupling is connected with a screw rod, and the tail end of the screw rod is connected with a reducing joint; wherein, a sealing ring, a sealing device and a protective cover are respectively arranged on the second bearing seat; the submersible pump directly driven by the permanent magnet synchronous motor has the advantages of simple and compact structure, good sealing performance, large rotary thrust, low energy consumption and easy control of the rotating speed, and the rotor shaft directly acts on the universal coupling and the screw rod.
Description
Technical Field
The utility model relates to submersible pump technical field, concretely relates to submersible pump that PMSM directly drives.
Background
With the reduction of oil production cost of an oil field system, oil production of the submersible pump becomes one of important means for stabilizing the oil field, the number and the energy consumption of the submersible pump are considerable, the installation operation of the submersible pump is complex, and the cost of each operation is very expensive. At present, the submersible pump generally adopts a four-stage three-phase squirrel-cage asynchronous motor with a slender structure, and the rotating speed must be reduced through a speed reducer to reach the maximum rotating speed of 300 revolutions per minute allowed by a screw. Because asynchronous motor all needs to have the reduction gear, efficiency and power factor are all lower, and power consumption is big, leads to the oil field charges of electricity expense huge. And when the submersible pump pumps and discharges oil, the submersible pump needs to run uninterruptedly for a long time, so that the oil is prevented from invading the shell, and the direct impact of the oil and impurities on the motor shaft is also very important.
Disclosure of Invention
The utility model aims at providing a permanent magnet synchronous motor directly drives latent oil pump to the problem that prior art exists.
In order to achieve the above object, the utility model adopts the following technical scheme:
a submersible pump directly driven by a permanent magnet synchronous motor is provided with a casing, wherein the permanent magnet synchronous motor is arranged in the casing and comprises a stator assembly and a rotor assembly, the stator assembly is arranged on the inner wall of the casing, the rotor assembly is matched with the stator assembly, and the rotor assembly is provided with a rotor shaft arranged along the axis direction of the casing; a first step shaft and a second step shaft are respectively arranged at two ends of the rotor shaft; the first stepped shaft is movably connected to a first bearing seat through a first bearing, and the first bearing seat is fixedly arranged in the machine shell; the second stepped shaft is connected through a second bearing and penetrates through a second bearing seat; the end part of the second stepped shaft is connected with a universal coupling, the other end of the universal coupling is connected with a screw rod, and the tail end of the screw rod is connected with a reducing joint; the second bearing seat is sleeved and fixed at the end part of the casing, a plurality of sealing rings are arranged between the outer wall of the second bearing seat and the inner wall of the casing, and a sealing device is arranged between the second bearing seat and the second stepped shaft; and a protective cover is arranged between the second bearing seat and the universal coupling.
The submersible pump directly driven by the permanent magnet synchronous motor is simple and compact in structure, directly driven by the permanent magnet synchronous motor, free of intermediate conversion link, high in rotating thrust, high in motor efficiency, low in energy consumption and easy to control the rotating speed, and a rotor shaft directly acts on the universal coupling and the screw rod. When the permanent magnet synchronous motor is electrified, the rotor shaft rotates to drive the universal coupling to rotate under the action of a magnetic field, so that the screw rod is driven to rotate, and the oil pumping work of the submersible pump is further realized.
The first stepped shaft and the second stepped shaft arranged at two ends of the rotor shaft are convenient for connecting the bearing and the bearing seat; the rotor shaft can be rotatably arranged in the shell, the second stepped shaft penetrates through the second bearing seat, a device to be driven can be directly connected conveniently, the arrangement of a transmission shaft and an intermediate link is reduced, the transmission efficiency of the motor is improved, and therefore the working efficiency of the submersible pump is improved;
the sealing ring is arranged to prevent external liquid from flowing into the casing from between the second bearing seat and the casing, and the sealing device is arranged to prevent external liquid from flowing into the casing from between the second bearing seat and the second stepped shaft; so as to avoid adverse effects on the built-in permanent magnet synchronous motor; the whole sealing performance is improved.
The protective cover further prevents liquid or sundries from impacting the second stepped shaft so as to protect the rotor shaft.
Further, the rotor assembly further comprises permanent magnets uniformly arranged on the rotor shaft, and the permanent magnets are distributed along the axial direction and the circumferential direction of the rotor shaft; stator module with the rotor subassembly sets up relatively, stator module is including stator core and winding stator winding on the stator core, stator core is the annular post of integrated into one piece or combination formula, stator core fixed mounting in on the inner wall of casing, reduced the setting of stator base, simplified mounting structure.
The permanent magnet provides a radial rotating magnetic field for the stator iron core, so that the stator assembly and the rotor assembly provide torque rotating around the axis for the rotor shaft, and the screw is directly driven to perform oil pumping work. By controlling the magnitude of the rotating magnetic force, the rotor assembly can rotate at a low speed or a high speed to provide a proper rotating force for the screw. And the stator component is of an integrally formed or combined annular column structure, so that the stator is more convenient to mount, maintain and care.
Furthermore, positioning rings are arranged between the two ends of the stator assembly and the first bearing seat and between the two ends of the stator assembly and the second bearing seat respectively; the positioning ring is sleeved inside the casing. The stator assembly can be fixed in a relatively stable area in the shell by the positioning ring, and cannot move or shake along the axial direction, so that the efficiency of a magnetic field and the efficiency of the motor are not influenced.
Furthermore, the positioning ring can be an independent annular ring, and two ends of the positioning ring are respectively abutted to the stator assembly and/or the bearing seat; or, the locating ring is integrally formed at the end part of the first bearing seat or the second bearing seat.
Further, the diameter of the end part of the casing close to the second bearing seat is gradually increased; the outer circumference of the second bearing seat is sequentially provided with a sealing part, a screwing part and a protruding part, the outer diameter of the sealing part is gradually increased, and the sealing part and the screwing part are sleeved in the casing and are matched with the inner wall of the casing; the sealing part is provided with a plurality of annular sealing grooves, and the sealing rings are arranged in the annular sealing grooves; the screwing part is fixedly connected with the shell through a bolt; the outer diameter of the bulge is larger than that of the shell, and one side of the bulge is abutted to the end face of the shell.
The casing with the gradually changed end part size is convenient for the second bearing seat to be sleeved in and fixed through the bolt, and the connection strength is improved.
Further, the protective cover is provided with a cover body and folded edges which are integrally formed; the cover body is in a truncated cone shape, and the folded edge is perpendicular to the axis of the universal coupling; and the universal coupling is provided with an annular groove matched with the folded edge.
Furthermore, a screw sleeve is arranged on the screw, and the reducing joint is installed at one end of the screw sleeve, which is far away from the universal coupling; and a flange is arranged at one end of the screw sleeve, which is close to the universal coupling, and an outer cover is connected between the flange and the end surface of the second bearing block.
Furthermore, a plurality of through holes are formed in the outer cover in the circumferential direction, and the through holes are formed in one side, close to the second bearing block, of the through holes.
Furthermore, an end seal is further arranged at one end, close to the first bearing seat, in the machine shell, and the end seal further improves the sealing performance of the submersible pump.
Furthermore, the sealing device is a mechanical sealing element sleeved on the second stepped shaft, and two ends of the mechanical sealing element are respectively abutted to the second bearing and the second bearing seat.
The outer circumference of the casing is also provided with a plurality of annular recesses which are respectively arranged at the end seal and the first bearing seat.
Compared with the prior art, the beneficial effects of the utility model are that: 1. the submersible pump directly driven by the permanent magnet synchronous motor is simple and compact in structure, directly driven by the permanent magnet synchronous motor, the rotor shaft directly acts on the universal coupling and the screw rod, the rotary thrust is large, the motor efficiency is high, the energy consumption is low, and the rotating speed is easy to control; 2. the driving intermediate links of gears, speed reducers and the like of the existing equipment are reduced, the driving mode and structure are simplified, the driving efficiency is improved, and the quick response of the submersible pump is realized; 3. the submersible pump directly driven by the permanent magnet synchronous motor has fewer faults and low noise, and can continuously drive the screw rod to work for a long time without stopping; 4. through the arrangement of the sealing ring, the sealing device and the end seal, the submersible pump has good sealing performance.
Drawings
Fig. 1 is a schematic view of the overall structure of a direct-drive submersible pump of a permanent magnet synchronous motor according to the present invention;
fig. 2 is a schematic cross-sectional structural view of an oil-submerged pump directly driven by a permanent magnet synchronous motor according to the present invention;
fig. 3 is a schematic sectional view at a-a of the submersible pump directly driven by the permanent magnet synchronous motor according to the present invention;
fig. 4 is an enlarged schematic structural diagram of the submersible pump directly driven by the permanent magnet synchronous motor at the position B of the utility model;
fig. 5 is a schematic structural view of another stator assembly of the submersible pump directly driven by the permanent magnet synchronous motor according to the present invention;
in the figure: 1. a housing; 2. a stator assembly; 201. a stator core; 202. a stator winding; 3. a rotor shaft; 301. a permanent magnet; 4. a first step shaft; 5. a second step axis; 6. a first bearing; 7. a first bearing housing; 8. a second bearing; 9. a second bearing housing; 901. a sealing part; 902. a screw connection part; 903. a boss portion; 904. an annular seal groove; 10. a universal coupling; 1001. an annular groove; 11. a housing; 12. a screw sleeve; 13. a reducer union; 14. a screw; 15. a protective cover; 1501. a cover body; 1502. folding edges; 16. a seal ring; 17. a sealing device; 18. positioning rings; 19. an end of the housing; 20. sealing the end part; 21. recessing; 22. a flange; 23. a bolt; 24. and a through hole.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to 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 the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The first embodiment is as follows:
as shown in fig. 1 to 4, a submersible pump directly driven by a permanent magnet synchronous motor comprises a casing 1, wherein the permanent magnet synchronous motor is arranged in the casing 1, and comprises a stator assembly 2 mounted on the inner wall of the casing 1 and a rotor assembly matched with the stator assembly 2, and the rotor assembly is provided with a rotor shaft 3 arranged along the axial direction of the casing 1; a first stepped shaft 4 and a second stepped shaft 5 are respectively arranged at two ends of the rotor shaft 3; the first stepped shaft 4 is movably connected to a first bearing seat 7 through a first bearing 6, and the first bearing seat 7 is fixedly installed in the machine shell 1; the second step shaft 5 is connected through a second bearing 8 and penetrates through a second bearing seat 9; the end part of the second stepped shaft 5 is connected with a universal coupling 10, the other end of the universal coupling 10 is connected with a screw 14, and the tail end of the screw 14 is connected with a reducing joint 13; the second bearing seat 9 is partially sleeved and fixed at the end of the casing 1, a plurality of sealing rings 16 are arranged between the outer wall of the second bearing seat 9 and the inner wall of the casing 1, and a sealing device 17 is arranged between the second bearing seat 9 and the second stepped shaft 5; a protective cover 15 is further arranged between the second bearing seat 9 and the universal joint coupling 10.
The submersible pump directly driven by the permanent magnet synchronous motor is simple and compact in structure, directly driven by the permanent magnet synchronous motor, free of intermediate conversion link, large in rotating thrust, high in motor efficiency, low in energy consumption and easy to control in rotating speed, and the rotor shaft 3 directly acts on the universal coupling 10 and the screw 14. When the permanent magnet synchronous motor is electrified, under the action of a magnetic field, the rotor shaft 3 rotates to drive the universal coupling 10 to rotate, so that the screw 14 is driven to rotate, and the oil pumping work of the submersible pump is further realized.
The first stepped shaft 4 and the second stepped shaft 5 which are integrally formed at the two ends of the rotor shaft 3 are convenient for connecting a bearing and a bearing seat; the rotor shaft 3 can be rotatably installed in the machine shell 1, the second stepped shaft 5 penetrates through the second bearing block 9, so that the direct connection with a to-be-driven device is facilitated, the arrangement of intermediate links such as a transmission shaft and a gear is reduced, the transmission efficiency of a motor is improved, and the working efficiency of the submersible pump is improved;
the sealing ring 16 is arranged to prevent external liquid from flowing into the casing 1 from between the second bearing seat 9 and the casing 1, and the sealing device 17 is arranged to prevent external liquid from flowing into the casing 1 from between the second bearing seat 9 and the second stepped shaft 5; so as to avoid adverse effects on the built-in permanent magnet synchronous motor; the whole sealing performance is improved.
The protective cover 15 further protects the rotor shaft 3 from liquid or impurities impacting the second step shaft 5.
Further, as shown in fig. 3, the rotor assembly further includes permanent magnets 301 uniformly arranged on the rotor shaft 3, and the permanent magnets 301 are distributed along the axial direction and the circumferential direction of the rotor shaft 3; stator module 2 with the rotor subassembly sets up relatively, stator module 2 is including stator core 201 and winding stator winding 202 on the stator core 201, stator core 201 is integrated into one piece's annular post, stator core 201 fixed mounting in on the inner wall of casing 1, reduced the setting of stator base, simplified mounting structure.
Further, positioning rings 18 are arranged between two ends of the stator assembly 2 and the first bearing seat 7 and the second bearing seat 9 respectively; the positioning ring 18 is sleeved inside the casing 1. The positioning ring 18 can fix the stator assembly 2 in a relatively stable area in the casing 1, and the stator assembly does not move or shake in the axial direction, so that the efficiency of a magnetic field and the efficiency of the motor are not affected.
Further, the positioning ring 18 is a single annular ring, and both ends of the positioning ring are respectively abutted to the end portions of the stator assembly 2 and the second bearing seat 9 and the end portion of the first bearing seat 7.
Further, as shown in fig. 4, the diameter of the end of the casing 1 near the second bearing seat 9 is gradually increased; a sealing part 901, a threaded part 902 and a protruding part 903 with gradually increased outer diameters are sequentially arranged on the outer circumference of the second bearing seat 9, and the sealing part 901 and the threaded part 902 are sleeved in the casing 1 and are matched with the inner wall of the casing 1; a plurality of annular sealing grooves 904 are formed in the sealing part 901, and the sealing rings 16 are installed in the annular sealing grooves 904; the screw-connection part 902 is fixedly connected with the casing 1 through a bolt 23 (see fig. 1), so that the connection strength is further improved; the outer diameter of the protruding portion 903 is larger than the outer diameter of the casing 1, and one side of the protruding portion 903 abuts against the end face of the casing 1.
Further, the protective cover 15 has a cover 1501 and a folded edge 1502 which are integrally formed; the cover 1501 has a truncated cone shape, the diameter of which is gradually reduced toward the universal joint 10, and the folded edge 1502 is arranged perpendicular to the axis of the universal joint 10; the universal coupling 10 is provided with an annular groove 1001 which is engaged with the flange 1502.
Further, a screw sleeve 12 is arranged on the screw 14, and the reducing joint 13 is installed at one end, far away from the universal coupling 10, of the screw sleeve 12; one end of the screw sleeve 12 close to the universal joint 10 is provided with a flange 22, and an outer cover 11 is connected between the flange 22 and the end surface of the second bearing seat 9. The sizes and lengths of the screw sleeve 12 and the screw 14 are set according to actual liquid pumping requirements, and the lengths are shown schematically in the figure.
Further, the outer cover 11 is provided with a plurality of through holes 24 (see fig. 1) along the circumferential direction, and the through holes 24 are disposed near one side of the second bearing seat 9.
Furthermore, a casing end part 19 and an end seal 20 are arranged at one end of the casing 1 close to the first bearing seat 7, and the casing end part 19 is a containing space for installing other auxiliary components of the submersible pump. The end seal 20 further improves the sealing performance of the submersible pump, and an end cover is arranged outside the end seal 20.
Further, the sealing device 17 is a mechanical sealing element sleeved on the second stepped shaft 5, and two ends of the mechanical sealing element are respectively abutted to inner holes of the second bearing 8 and the second bearing seat 9.
A plurality of annular recesses 21 are further formed in the outer circumference of the housing 1, and the recesses 21 are respectively formed in positions close to the end seal 20 and the first bearing seat 7, so that the housing 1 has a layered effect.
Example two:
the present embodiment is different from the first embodiment in that the present embodiment provides another structure of the stator core.
Specifically, as shown in fig. 5, the stator core 201 is a fan-shaped column structure, and the stator cores 201 of the plurality of independent fan-shaped column structures form a combined cylindrical stator structure; each stator core 201 is wound with a stator winding 202, and the stator cores 201 are fixedly mounted on the inner wall of the machine shell 1;
the rotor assembly comprises permanent magnets 301 uniformly arranged on the rotor shaft 3, and the permanent magnets 301 are distributed along the axial direction and the circumferential direction of the rotor shaft 3; each stator core 201 corresponds to the permanent magnet 301.
The stator assembly 2 is formed by combining stator cores 201 with sector block structures, when one of the stator cores 201 and the windings thereof are damaged, one of the stator cores 201 and the windings thereof can be independently replaced without integral replacement; thereby being more convenient for the maintenance and nursing of the equipment and reducing the maintenance cost.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A submersible pump directly driven by a permanent magnet synchronous motor is provided with a casing and is characterized in that the permanent magnet synchronous motor is arranged in the casing and comprises a stator assembly and a rotor assembly, wherein the stator assembly is arranged on the inner wall of the casing; a first step shaft and a second step shaft are respectively arranged at two ends of the rotor shaft; the first stepped shaft is movably connected to a first bearing seat through a first bearing, and the first bearing seat is fixedly arranged in the machine shell; the second stepped shaft is connected through a second bearing and penetrates through a second bearing seat; the end part of the second stepped shaft is connected with a universal coupling, the other end of the universal coupling is connected with a screw rod, and the tail end of the screw rod is connected with a reducing joint; the second bearing seat is sleeved and fixed at the end part of the casing, a plurality of sealing rings are arranged between the outer wall of the second bearing seat and the inner wall of the casing, and a sealing device is arranged between the second bearing seat and the second stepped shaft; and a protective cover is arranged between the second bearing seat and the universal coupling.
2. The direct-drive submersible pump of the permanent magnet synchronous motor as claimed in claim 1, wherein the rotor assembly further comprises permanent magnets uniformly arranged on the rotor shaft, and the permanent magnets are distributed along the axial direction and the circumferential direction of the rotor shaft; stator module with the rotor subassembly sets up relatively, stator module is including stator core and winding stator winding on the stator core, stator core is integrated into one piece or the annular post of combination formula, stator core fixed mounting be in on the inner wall of casing.
3. The submersible pump directly driven by the permanent magnet synchronous motor according to claim 1, wherein positioning rings are arranged between two ends of the stator assembly and the first bearing seat and between two ends of the stator assembly and the second bearing seat respectively; the positioning ring is sleeved inside the casing.
4. The direct-drive submersible pump of the permanent magnet synchronous motor as claimed in claim 3, wherein the retainer ring is integrally formed at an end of the first bearing housing or the second bearing housing.
5. The direct-drive submersible pump of the permanent magnet synchronous motor as claimed in claim 1, wherein the diameter of the end of the casing close to the second bearing seat is gradually increased; the outer circumference of the second bearing seat is sequentially provided with a sealing part, a screwing part and a protruding part, the outer diameter of the sealing part is gradually increased, and the sealing part and the screwing part are sleeved in the casing and are matched with the inner wall of the casing; the sealing part is provided with a plurality of annular sealing grooves, and the sealing rings are arranged in the annular sealing grooves; the screwing part is fixedly connected with the shell through a bolt; the outer diameter of the bulge is larger than that of the shell, and one side of the bulge is abutted to the end face of the shell.
6. The direct-drive submersible pump of the permanent magnet synchronous motor as claimed in claim 1, wherein the shield has an integrally formed cover body and folded edges; the cover body is in a truncated cone shape, and the folded edge is perpendicular to the axis of the universal coupling; and the universal coupling is provided with an annular groove matched with the folded edge.
7. The submersible pump directly driven by the permanent magnet synchronous motor as claimed in claim 1, wherein the screw is provided with a screw sleeve, and one end of the screw sleeve, which is far away from the universal coupling, is provided with the reducer union; and a flange is arranged at one end of the screw sleeve, which is close to the universal coupling, and an outer cover is connected between the flange and the end surface of the second bearing block.
8. The submersible pump directly driven by the permanent magnet synchronous motor as claimed in claim 7, wherein the outer cover is provided with a plurality of through holes along the circumferential direction, and the through holes are arranged close to one side of the second bearing block.
9. The direct-drive submersible pump of the permanent magnet synchronous motor as claimed in claim 1, wherein an end seal is further provided at one end of the housing near the first bearing seat.
10. The submersible pump directly driven by the permanent magnet synchronous motor as claimed in claim 1, wherein the sealing means is a mechanical sealing member fitted around the second stepped shaft, and both ends of the mechanical sealing member are respectively abutted against the second bearing and the second bearing housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921998998.3U CN211127434U (en) | 2019-11-19 | 2019-11-19 | Permanent magnet synchronous motor directly-driven submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921998998.3U CN211127434U (en) | 2019-11-19 | 2019-11-19 | Permanent magnet synchronous motor directly-driven submersible pump |
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| Publication Number | Publication Date |
|---|---|
| CN211127434U true CN211127434U (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921998998.3U Active CN211127434U (en) | 2019-11-19 | 2019-11-19 | Permanent magnet synchronous motor directly-driven submersible pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113517767A (en) * | 2021-04-21 | 2021-10-19 | 沈阳工业大学 | Slender small-diameter low-speed large-torque submersible permanent magnet motor |
| CN116557305A (en) * | 2023-06-05 | 2023-08-08 | 唐山职业技术学院 | Permanent magnet synchronous motor direct-driven oil-submerged pump |
-
2019
- 2019-11-19 CN CN201921998998.3U patent/CN211127434U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113517767A (en) * | 2021-04-21 | 2021-10-19 | 沈阳工业大学 | Slender small-diameter low-speed large-torque submersible permanent magnet motor |
| CN113517767B (en) * | 2021-04-21 | 2024-01-26 | 沈阳工业大学 | Slender small-diameter low-speed high-torque submersible permanent magnet motor |
| CN116557305A (en) * | 2023-06-05 | 2023-08-08 | 唐山职业技术学院 | Permanent magnet synchronous motor direct-driven oil-submerged pump |
| CN116557305B (en) * | 2023-06-05 | 2024-03-26 | 唐山职业技术学院 | Permanent magnet synchronous motor direct-driven oil-submerged pump |
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