CN223639143U - A compact permanent magnet synchronous motor for vertical shaft pumps - Google Patents
A compact permanent magnet synchronous motor for vertical shaft pumpsInfo
- Publication number
- CN223639143U CN223639143U CN202423230258.9U CN202423230258U CN223639143U CN 223639143 U CN223639143 U CN 223639143U CN 202423230258 U CN202423230258 U CN 202423230258U CN 223639143 U CN223639143 U CN 223639143U
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- permanent magnet
- synchronous motor
- magnet synchronous
- vertical shaft
- rotor
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Abstract
The utility model belongs to the technical field of motors, and particularly relates to a compact permanent magnet synchronous motor for a vertical shaft pump. The utility model provides a compact vertical shaft pump permanent magnet synchronous motor which comprises a machine base, a rotating shaft arranged on the machine base, a stator assembly and a rotor, wherein the stator assembly and the rotor are arranged in the machine base and connected with the rotating shaft, a water jacket cavity is formed in the machine base, a rotor cooler connected with the water jacket cavity in parallel is arranged on an axial end cover of the machine base, and an outlet box is arranged on the axial end cover of the machine base.
Description
Technical Field
The utility model belongs to the technical field of motors, and particularly relates to a compact permanent magnet synchronous motor for a vertical shaft pump.
Background
Along with the development of industrial technology, the motor also tends to be diversified and specialized, and the motor needs to meet the requirements of different working conditions in various industries. In terms of shaft drainage, the traditional water pump motor is difficult to adapt to complex installation environment of a shaft, most commonly, the volume of a common motor is possibly too large to cause the installation failure in a shaft with narrow space, the shaft pump motor is also generated, so far, along with the increasing prominence of energy problems, high efficiency and energy conservation become an important development direction of the shaft pump motor, a permanent magnet motor is adopted as a rotor of the permanent magnet motor to excite, excitation loss, slip loss and rotor loss do not exist, the power factor is high, and compared with the common motor, the power factor can save more than 10 percent, can effectively reduce energy consumption, and accords with the energy conservation and emission reduction requirements advocated by China.
The patent publication No. CN112701835A, chinese patent publication No. 2021.4.23 discloses a permanent magnet synchronous motor rotor, which comprises a shell, wherein a front end cover is fixedly arranged on one side of the shell, the front end cover is arranged to seal the shell and protect the internal structure of the shell, a rear end cover is fixedly arranged on the other side of the shell, the rear end cover is arranged to be matched with the front end cover to fix a rotating shaft, thus realizing the fixation of a motor, first bolt holes are formed in the fixed connection parts of the front end cover, the rear end cover and the shell, the first bolt holes are used for installing bolts, bolts are arranged in the first bolt holes in a threaded manner, one side of the front end cover is fixedly connected with one side of the shell, one side of the rear end cover is fixedly connected with the other side of the shell, the front end cover and the shell are prevented from loosening, and gaskets are fixedly arranged between the bolts and the front end cover and the rear end cover.
The permanent magnet synchronous motor rotor in the Chinese patent has the general use method and the advantages that the shell is fixedly connected with the front end cover and the rear end cover through bolts, so that the shell, the front end cover and the rear end cover can be conveniently detached, and a user can conveniently maintain the permanent magnet synchronous motor rotor.
However, the permanent magnet synchronous motor rotor has at least the following defects in the actual use process, in other words, the technical problem to be solved by the utility model is that the rotor cannot be effectively adapted to a narrow well space, and cannot be adapted to the well environment and the working requirement of special working conditions.
In view of the foregoing, it is desirable to develop a permanent magnet synchronous motor that can be adapted to the shaft environment of a particular operating condition to address such problems.
Disclosure of utility model
The utility model provides a compact vertical shaft pump permanent magnet synchronous motor which comprises a machine base, a rotating shaft arranged on the machine base, a stator assembly and a rotor, wherein the stator assembly and the rotor are arranged in the machine base and connected with the rotating shaft, a water jacket cavity is formed in the machine base, a rotor cooler connected with the water jacket cavity in parallel is arranged on an axial end cover of the machine base, and an outlet box is arranged on the axial end cover of the machine base.
The technical scheme includes that the compact vertical shaft pump permanent magnet synchronous motor comprises a base, a rotating shaft arranged on the base, a stator assembly and a rotor, wherein the stator assembly and the rotor are arranged in the base and connected with the rotating shaft, a water jacket cavity is formed in the base, and a rotor cooler and an outlet box are arranged on an axial end cover of the base.
The further preferable technical scheme is that the cross section of the stand is round.
The further preferable technical scheme is that the joint of the step surfaces of the rotating shaft is a round angle.
The further preferable technical scheme is that a fan is arranged at the side end of the joint of the rotor and the rotating shaft, and an air outlet is arranged at the upper end of the stand.
The further preferable technical scheme is that the number of the air outlets is at least two, the air outlets are respectively arranged above two ends of the stator assembly, and an air draft device is arranged at the position, far away from the air outlet of the fan.
The further preferable technical scheme is that the stator assembly comprises a stator core and a stator winding, and the stator core is provided with a chute.
The water jacket cavity comprises an annular cavity which is arranged by taking the rotating shaft as the center, a water outlet pipe which is arranged at the upper end of the annular cavity and extends outwards, and a connecting pipe which is arranged at the output end of the water outlet pipe and is connected with the rotor cooler in parallel.
The further preferable technical scheme is that the water outlet pipe comprises two branch pipes which are arranged towards opposite directions.
The further preferable technical scheme is that the end parts of the water outlet pipe and the connecting pipe are provided with detachable joints.
The further preferable technical scheme is that the connecting pipe is a hose.
The invention has the advantages that:
The vertical shaft pump can effectively adapt to the vertical shaft environment and the working requirement of special working conditions, the power density of the motor is improved by optimizing the design and the manufacturing process of the motor, the small-groove multipolar groove pole matching is adopted, the motor is enabled to be good in performance while the size is reduced, the lower rated rotation speed is designed, the direct driving of the vertical shaft pump is realized, the requirement of high-lift drainage is met, the installation space is saved, and the production cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, 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 front semi-sectional view of the present utility model;
FIG. 2 is a side view of the present utility model;
fig. 3 is a schematic view of a stator according to the present utility model.
In the drawings, the meanings of the reference numerals are as follows:
The device comprises a machine base 1, a rotating shaft 2, a stator assembly 3, a rotor 4, a water jacket cavity 5, a rotor cooler 6, an outlet box 7, a fan 8 and an air outlet 9;
Stator core 31, stator winding 32, annular cavity 51, water outlet pipe 52, connecting pipe 53, detachable joint 54;
And a branch pipe 521.
Detailed Description
The following detailed description of the embodiments of the utility model is provided merely as a preferred embodiment of the utility model and is not intended to limit the scope of the utility model.
The terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible in this specification are defined with respect to the configurations shown in the drawings, and the terms "inner" and "outer" refer to the relative concepts of the terms toward or away from the geometric center of a particular component, respectively, and thus may be changed accordingly depending on the location and state of use of the term, and therefore, these or other terms of orientation should not be construed as limiting terms.
As shown in figures 1-3, the compact shaft pump permanent magnet synchronous motor comprises a machine base 1, a rotating shaft 2 arranged on the machine base 1, a stator assembly 3 and a rotor 4 which are arranged in the machine base 1 and connected with the rotating shaft 2, wherein a water jacket cavity 5 is arranged in the machine base 1, and a rotor cooler 6 and an outlet box 7 are arranged on an axial end cover of the machine base 1.
In this embodiment, the compact permanent magnet synchronous motor for a shaft pump is generally used as follows:
The motor base 1 is used as a main body structure of the motor and is used for supporting and accommodating other components, wherein the rotating shaft 2 is arranged on the motor base and is used for transmitting power and torque, when three-phase alternating current is introduced into the stator assembly 3, a rotating magnetic field is generated, the direction and the size change along with the change of the introduced current, the permanent magnet is arranged on the rotor 4, the electromagnetic torque is generated through interaction of the rotating magnetic field generated by the stator assembly 3, the rotor 4 rotates, and therefore the normal operation of the motor is guaranteed, in the operation process, the motor is damaged due to overheat heat, the water jacket cavity 5 is arranged inside the motor base 1 and the rotor cooler is arranged outside the motor base for cooling, the rotor cooler 6 and the water jacket cavity 5 are not communicated and are arranged in parallel, cooling liquid circulates through the water jacket cavity 5, heat generated in the operation process is effectively taken away, the outlet box 7 is used for leading out a power wire and a control wire related to the motor and is in telecommunication connection with an external control system, and the whole power supply and control are realized, the rotor cooler 6 and the outlet box 7 are arranged on an axial end cover for further adapting to the working condition of the motor in a vertical shaft or a narrow space, the situation that the motor does not occupy a lateral space, and other difficult entering into a well can be avoided due to the fact that other narrow components cannot enter the machine body.
As a preferred embodiment, the cross section of the stand 1 is circular.
In this embodiment, when applied to a shaft environment, the body structure having a circular cross-section has a smaller footprint and a more substantial volume than conventional box motors or other shapes.
As a preferable example of this embodiment, the connection point of the step surface of the rotating shaft 2 is a rounded corner.
In this embodiment, the rotating shaft 2 has multi-section structures with different sizes, so that multi-layer steps are formed, the step surface connection positions between the steps are set to be round corner transitions, the round corner design can effectively reduce stress concentration caused by abrupt change of cross sections, the flatness transition can improve the strength and rigidity of the rotating shaft 2, further, the strength, the rigidity, the toughness and other multiple performances of the rotating shaft 2 are improved through a heat treatment process, the rigidity of the rotating shaft reaches HRC 43-51, the rotating shaft has higher fatigue resistance, and failure in the operation of the rotating shaft is effectively prevented.
As one preferable mode of the embodiment, a fan 8 is arranged at the side end of the connection part of the rotor 4 and the rotating shaft 2, an air outlet 9 is arranged at the upper end of the stand 1, at least two air outlets 9 are respectively arranged above two ends of the stator assembly 3, and an air exhausting device is arranged at the air outlet 9 far away from the fan 8.
In this embodiment, the fan 8 is disposed at the end close to the rotor 4 to effectively improve heat dissipation efficiency, enhance heat dissipation to the internal iron core and the magnetic steel, delay temperature rise of the motor, and prolong service life of the motor, the fan 8 is disposed at one end to provide air flow to a component concentration area, and cool air is blown out from the air outlet 9 at the upper end of the machine base 1 after passing through a plurality of components, preferably, in order to make the air flow blocked by the components smoothly flow out of the machine body, the air outlets are disposed at least two at two ends of the machine base, wherein the air outlets farther from the fan 8 are provided with an air exhaust device capable of guiding cool air to flow out after passing through a plurality of components such as the rotor and the stator assembly, thereby improving air cooling effect, and the air exhaust device can be an air exhaust fan, or a wind wheel disposed at the air outlet performs air exhaust under the action of an outside centrifugal fan, and the fan main body does not occupy a transverse external space and can be disposed at the axial end or inside the machine body.
As one preferable aspect of the present embodiment, the stator assembly 3 includes a stator core 31 and a stator winding 32, and the stator core 31 is provided as a skewed slot.
In this embodiment, the stator core 31 adopts the slot level matching of few slots and multiple stages, and the slots arranged in an oblique manner can reduce the air gap between the stator coil and the core, reduce magnetic leakage and weaken tooth harmonic electromagnetic torque, thereby reducing the additional loss, vibration and noise of the motor, improving the running stability and efficiency of the motor, and the chute effectively increases the surface area of the stator core, can dissipate heat faster and control temperature rise.
As one preferable embodiment, the water jacket cavity 5 includes an annular cavity 51 centered on the rotating shaft 2, a water outlet pipe 52 disposed at an upper end of the annular cavity 51 and extending outward, and a connection pipe 53 disposed at an output end of the water outlet pipe 52 and connected in parallel with the rotor cooler 6.
In the embodiment, the cooling liquid circulates in the case through the water jacket cavity 5, the annular cavity 51 is used as a main body of internal circulation, can be close to the internal part to the greatest extent and is matched with the shape of the machine body, the contact area between the cooling liquid and the heat source is increased, under the same supply condition, the annular design can disperse heat more effectively than that of straight lines or other plane shapes, the annular cavity is favorable for the stable and uniform flow of the cooling liquid, dead flowing angles and hot spots caused by fold lines are avoided, the heat exchange performance is improved, and the upper end of the annular cavity 51 is connected with the water outlet pipe 52 extending out of the machine body and is connected with the rotor cooler 6 in parallel through the connecting pipe 53.
As a preference of this embodiment, the outlet pipe 52 comprises two sub pipes 521 disposed in opposite directions, and the outlet pipe 52 and the end of the connection pipe 53 are provided with detachable joints 54.
In this embodiment, the water outlet pipe 52 includes two branch pipes 521 for improving the overall circulation efficiency, wherein the two branch pipes are disposed in opposite directions to adapt to different working conditions, and the detachable joint 54 is used for adjusting the overall design, and includes a flange plate disposed at the end of the pipe and a plurality of bolts for connecting the two flange plates.
As a preferable example of the present embodiment, the connection pipe 53 is a hose.
Compared with the prior art, the technical scheme has the advantages that the hose design of the connecting pipe 53 can effectively compress the space occupied by the pipeline, the flexibility is high, and the connecting pipe can be arranged into a polytetrafluoroethylene pipe, a rubber pipe, a pipe made of ethylene-propylene-diene copolymer and the like, so that the connecting pipe has good chemical stability and heat resistance.
The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiments, and various modifications may be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model. These are all non-inventive modifications which are intended to be protected by the patent laws within the scope of the appended claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423230258.9U CN223639143U (en) | 2024-12-26 | 2024-12-26 | A compact permanent magnet synchronous motor for vertical shaft pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423230258.9U CN223639143U (en) | 2024-12-26 | 2024-12-26 | A compact permanent magnet synchronous motor for vertical shaft pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223639143U true CN223639143U (en) | 2025-12-05 |
Family
ID=97866240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202423230258.9U Active CN223639143U (en) | 2024-12-26 | 2024-12-26 | A compact permanent magnet synchronous motor for vertical shaft pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223639143U (en) |
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2024
- 2024-12-26 CN CN202423230258.9U patent/CN223639143U/en active Active
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