CN211508871U - Bearingless permanent magnet synchronous motor - Google Patents
Bearingless permanent magnet synchronous motor Download PDFInfo
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- CN211508871U CN211508871U CN202020561001.4U CN202020561001U CN211508871U CN 211508871 U CN211508871 U CN 211508871U CN 202020561001 U CN202020561001 U CN 202020561001U CN 211508871 U CN211508871 U CN 211508871U
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- rotor core
- magnetic steel
- permanent magnet
- synchronous motor
- magnet synchronous
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Abstract
The utility model discloses a bearingless permanent magnet synchronous motor, which comprises a shell component, a stator component and a device component, wherein the outer side surface of a front flange in the shell component is provided with a reinforcing rib and a spigot structure matched with the excircle of a bearing cover of a water injection plunger pump; the periphery of the supporting frame is provided with a rotor core connected through a flat key, a dovetail groove used for placing magnetic steel is formed in the outer peripheral surface of the rotor core, and two ends of the magnetic steel are fixed through a baffle arranged on the rotor core. The utility model discloses simple structure, simple to operate, the reliability is high, and the maintenance cost is low.
Description
Technical Field
The utility model belongs to the technical field of electrical equipment technique and specifically relates to a no bearing PMSM is related to.
Background
At present, the oil field water injection plunger pump system is mostly driven by a common rotating motor (an asynchronous motor or a synchronous motor), and because the mechanical structure of the traditional water injection plunger pump system is complex, the water injection plunger pump system needs to be output through a reduction gearbox or a belt pulley during driving of the common rotating motor, the efficiency of the water injection plunger pump is very low, and the overall efficiency of the system is only about 75 percent.
Disclosure of Invention
In order to solve the problem of water injection plunger pump system inefficiency, the utility model provides a high-efficient energy-conserving no bearing PMSM specifically can adopt following technical scheme:
the utility model provides a no bearing PMSM, include
The shell assembly comprises an annular shell, wherein the outer peripheral surface of the annular shell is provided with a heat dissipation rib, the two sides of the annular shell are provided with a front flange and a rear flange, the center of the front flange is provided with a mounting hole, the outer side surface of the front flange is provided with a reinforcing rib and a spigot structure matched with the excircle of a bearing cover of the water injection plunger pump, and the center of the rear flange is provided with an observation hole;
the stator assembly comprises a stator winding and a stator core which are arranged on the inner side surface of the annular shell;
the rotor assembly comprises a spoke-shaped support frame, a tapered hole is formed in the center of the support frame, a shaft sleeve used for being connected with a water injection plunger pump shaft is arranged in the tapered hole, the shaft sleeve extends towards the direction of the front flange and is stopped at the mounting hole, and a cover plate with a hexagonal hole formed in the center is arranged at the other end of the tapered hole; the periphery of the supporting frame is provided with a rotor core connected through a flat key, a dovetail groove used for placing magnetic steel is formed in the outer peripheral surface of the rotor core, and two ends of the magnetic steel are fixed through a baffle arranged on the rotor core.
And magnetic steel glue is filled in the gap between the dovetail groove and the magnetic steel.
The stator winding and the rotor core are in a fractional slot structure with 108 slots and 48 poles.
And the rear flange is provided with a junction box.
The utility model provides a no bearing PMSM, the flange passes through tang structure and water injection plunger pump bearing cap excircle cooperation installation before its motor, motor support frame passes through the axle sleeve in the bell mouth and is connected with water injection plunger pump input shaft, former motor belt pulley/reducing gear box has been saved, make the motor can export big moment of torsion direct drive water injection plunger pump system under the low-speed condition, thereby the energy efficiency of the messenger improves greatly, compare with ordinary rotatory asynchronous machine, its complete machine efficiency has promoted 10-15%, furtherly, because its simple structure, high durability and convenient installation, therefore, can reduce the maintenance frequency greatly, reduce the maintenance cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the embodiments of the present invention are based on the technical solutions of the present invention and are described in detail, but the present invention is not limited to the following embodiments.
No bearing PMSM, including casing subassembly, stator module and rotor subassembly etc. Specifically, as shown in fig. 1, the housing assembly includes an annular housing 1.1, and heat dissipation ribs a are welded on the outer peripheral surface of the annular housing, so that the heat dissipation function is achieved, and the strength of the housing can be enhanced; the two sides of the annular shell 1.1 are connected with a front flange 1.2 and a rear flange 1.3, the center of the front flange 1.2 is provided with a mounting hole b, the outer side surface of the front flange 1.2 is provided with a reinforcing rib 1.4 and a spigot structure 1.5 which is matched with the excircle of a bearing cover of a water injection plunger pump M, the concentricity of a motor and the water injection plunger pump M is ensured, the shell is solidified, and the mounting mode is simplified; the center of the rear flange 1.3 is provided with an observation hole c. The stator assembly comprises stator windings 2.1 and a stator core 2.2 mounted on the inner side of the annular housing 1.1. The rotor subassembly is including being spoke form support frame 3.1, and the bell mouth has been seted up in support frame 3.1's center department, and this bell mouth and 3.2 interference fit of axle sleeve to pass through the bolt fastening. The shaft sleeve 3.2 extends towards the direction of the front flange 1.2 and is stopped at the mounting hole b and is used for connecting the shaft sleeve of the M shaft of the water injection plunger pump. The other end of the taper hole is provided with a cover plate 3.3 with a hexagonal hole at the center through a bolt, the hexagonal hole is a standard M30 hexagon socket, and a mechanical wrench can be rotated when a pump is coiled conveniently. The periphery of the support frame 3.1 is provided with a rotor core 3.5 connected through a flat key 3.4, a dovetail groove used for placing a magnetic steel 3.6 is formed in the outer peripheral surface of the rotor core 3.5, two ends of the magnetic steel 3.6 are fixed through a baffle 3.7 arranged on the rotor core 3.5, and furthermore, magnetic steel glue is filled in a gap between the dovetail groove and the magnetic steel 3.6, so that the centrifugal force generated by the rotation of a motor can be fully overcome. The stator winding 2.1 and the rotor core 3.5 are in a fractional slot structure with 108 slots and 48 poles, so that the cogging torque of the motor can be eliminated, and the running stability of the motor is improved. In addition, a junction box 4 is also mounted on the rear flange 1.3.
The utility model relates to a big torque motor of low-speed, when the rotational speed was 360r/min, power can reach 80 kW. This kind of structure has reduced the repeated location when motor and water injection plunger pump erection joint, has improved the axiality of motor and water injection plunger pump, has effectively prevented the unstable work of motor and has swung even, has improved the life of motor. Compare with the motor that does not take the bearing, the utility model discloses with low costs, energy-conserving effect is showing, and environmental suitability is strong, and the reliability is high, can be used to fields such as petrochemical, mining exploitation.
In the description of the present invention, it should be noted that the terms "front", "back", "inside", "outside", 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 in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Claims (4)
1. The utility model provides a no bearing PMSM which characterized in that: comprises that
The shell assembly comprises an annular shell, wherein the outer peripheral surface of the annular shell is provided with a heat dissipation rib, the two sides of the annular shell are provided with a front flange and a rear flange, the center of the front flange is provided with a mounting hole, the outer side surface of the front flange is provided with a reinforcing rib and a spigot structure matched with the excircle of a bearing cover of the water injection plunger pump, and the center of the rear flange is provided with an observation hole;
the stator assembly comprises a stator winding and a stator core which are arranged on the inner side surface of the annular shell;
the rotor assembly comprises a spoke-shaped support frame, a tapered hole is formed in the center of the support frame, a shaft sleeve used for being connected with a water injection plunger pump shaft is arranged in the tapered hole, the shaft sleeve extends towards the direction of the front flange and is stopped at the mounting hole, and a cover plate with a hexagonal hole formed in the center is arranged at the other end of the tapered hole; the periphery of the supporting frame is provided with a rotor core connected through a flat key, a dovetail groove used for placing magnetic steel is formed in the outer peripheral surface of the rotor core, and two ends of the magnetic steel are fixed through a baffle arranged on the rotor core.
2. The bearingless permanent magnet synchronous motor according to claim 1, characterized in that: and magnetic steel glue is filled in the gap between the dovetail groove and the magnetic steel.
3. The bearingless permanent magnet synchronous motor according to claim 1, characterized in that: the stator winding and the rotor core are in a fractional slot structure with 108 slots and 48 poles.
4. The bearingless permanent magnet synchronous motor according to claim 1, characterized in that: and the rear flange is provided with a junction box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020561001.4U CN211508871U (en) | 2020-04-16 | 2020-04-16 | Bearingless permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020561001.4U CN211508871U (en) | 2020-04-16 | 2020-04-16 | Bearingless permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211508871U true CN211508871U (en) | 2020-09-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020561001.4U Active CN211508871U (en) | 2020-04-16 | 2020-04-16 | Bearingless permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211508871U (en) |
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2020
- 2020-04-16 CN CN202020561001.4U patent/CN211508871U/en active Active
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