CN218102834U - Generator capable of improving power density - Google Patents
Generator capable of improving power density Download PDFInfo
- Publication number
- CN218102834U CN218102834U CN202222313490.3U CN202222313490U CN218102834U CN 218102834 U CN218102834 U CN 218102834U CN 202222313490 U CN202222313490 U CN 202222313490U CN 218102834 U CN218102834 U CN 218102834U
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- driving end
- generator
- stator core
- power density
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Abstract
The utility model relates to a generator capable of improving power density, which is characterized in that the generator comprises a frame and a rotating shaft, wherein the non-driving end of the frame is provided with a non-driving end cover and an axial ventilation opening, the outer side of the non-driving end cover is provided with a rear cover, the rear cover is provided with an air inlet, and the lower part of the side wall of the non-driving end of the frame is provided with a side air inlet; the driving end of the engine base is provided with a transition connecting sleeve and an air outlet; the motor base comprises a cylindrical shell and a plurality of reinforcing ribs symmetrically and fixedly arranged on the inner wall of the shell, the stator core is fixedly arranged in an inner cavity of the motor base, the rotor core is arranged on the rotating shaft, and an air gap is reserved between the rotor core and the stator core; and a plurality of guide plates are fixedly arranged on the inner wall of the shell at the side of the driving end of the stator core, and the guide plates are arc-shaped and arranged between the reinforcing ribs. The utility model discloses simple structure is compact, and the wind path structure sets up rationally, improves generator ventilation cooling effect, promotes generator power density, guarantees that the generator moves reliably steadily for a long time.
Description
Technical Field
The utility model relates to a generator especially relates to a can improve power density's generator.
Background
In recent years, with the continuous development of technology and the continuous increasing power demand of China, the application of the generator is wider and wider, and people put forward higher and higher requirements on the application of the generator. High power density, small size, light weight, and low cost have become the topic of interest. The general generator design selects a corresponding electromagnetic load value according to the insulation grade of the generator, and the power of the generator is improved by increasing iron core and winding materials. In order to obtain higher power and improve power density, a higher electromagnetic load must be selected, which causes increased heat generation, increased loss and increased temperature rise of the generator, so that the cooling air path structure of the motor needs to be improved, and the air is pushed by the fan to flow through the motor to take away more generated heat, thereby achieving the purpose of cooling.
In the basic structure of the existing generator, a fan located in a drive end transition sleeve is installed on a rotor shaft and is directly driven by a prime motor, cooling air is sucked from a rear cover of the generator and an air inlet of a shell through the rotating fan, and the cooling air passes through an inner cavity of a machine base to ventilate and cool a rotor assembly and a stator assembly and discharges heat from an air outlet of the drive end transition sleeve. However, due to the short ventilation and heat dissipation path, the ventilation and cooling effects of the generator are general, so that the power density of the generator is limited to be increased, and the long-term stable and reliable operation of the generator is influenced.
SUMMERY OF THE UTILITY MODEL
The applicant carries out research and improvement aiming at the problems, and provides a generator capable of improving power density, which has a simple and compact structure, a reasonable wind path structure, improved ventilation and cooling effects of the generator, improved power density of the generator and ensured long-term stable and reliable operation of the generator.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a generator capable of improving power density comprises a base and a rotating shaft, wherein a non-driving end cover is arranged at a non-driving end of the base, an axial ventilation opening is formed in the non-driving end cover, a rear cover is arranged on the outer side of the non-driving end cover, an air inlet is formed in the rear cover, and a side air inlet is formed in the lower portion of the side wall of the non-driving end of the base; the drive end of the base is provided with a transition connecting sleeve, the transition connecting sleeve is provided with an air outlet, and the drive end of the rotating shaft is provided with a fan and a drive disk; the excitation stator component is fixedly arranged on the non-driving end cover, and the excitation rotor component is arranged at the non-driving end of the rotating shaft; the motor base comprises a cylindrical shell and a plurality of reinforcing ribs symmetrically and fixedly arranged on the inner wall of the shell, a stator core is fixedly arranged in an inner cavity of the motor base, a stator winding is wound in a groove shape of the stator core, a rotor core is arranged on the rotating shaft, a rotor winding is wound on the rotor core, and an air gap is reserved between the rotor core and the stator core; and a plurality of guide plates are fixedly arranged on the inner wall of the shell at the side of the driving end of the stator core, and the guide plates are arc-shaped and arranged between the reinforcing ribs.
Further:
the fan is a backward tilting centrifugal fan.
The back rake angle of the fan is between 35 DEG and 45 DEG
The back rake angle of the fan is 40 °.
The technical effects of the utility model reside in that:
the utility model discloses a can improve power density's generator, simple structure is compact, and the wind path structure sets up rationally, improves generator ventilation cooling effect, promotes generator power density, guarantees that the generator moves reliably stably for a long time.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 isbase:Sub>A sectional view taken atbase:Sub>A-base:Sub>A of fig. 1.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the utility model discloses a frame 9 and pivot 10, the non-drive end of frame 9 is equipped with non-drive end cover 12, is equipped with the axial vent on the non-drive end cover 12, and the outside of non-drive end cover 12 is equipped with back shroud 11, is equipped with the air intake on the back shroud 11, and the lateral wall lower part of the non-drive end of frame 9 is equipped with side air intake 93. The driving end of the engine base 9 is provided with a transition connecting sleeve 7, the transition connecting sleeve 7 is provided with an air outlet 71, the driving end of the rotating shaft 10 is provided with a fan 6 and a driving disk 8, the fan 6 is a backward inclined centrifugal fan, the backward inclination angle B of the fan 6 is between 35 degrees and 45 degrees, and in the embodiment, the backward inclination angle of the fan 6 is 40 degrees. The excitation stator assembly 2 is fixedly arranged on the non-driving end cover 12, and the excitation rotor assembly 1 is arranged on the non-driving end of the rotating shaft 10.
The base 9 comprises a cylindrical housing 91 and a plurality of reinforcing ribs 92 symmetrically and fixedly arranged on the inner wall of the housing 91, the stator core 3 is fixedly arranged in an inner cavity of the base 9, the stator winding is wound in a groove shape of the stator core 3, the rotor core 4 is arranged on the rotating shaft 10, the rotor winding is wound on the rotor core 4, and an air gap is reserved between the rotor core 4 and the stator core 3. A plurality of guide plates 5 are fixedly arranged on the inner wall of the casing 91 at the driving end side of the stator core 3, the guide plates 5 are arc-shaped and arranged between the reinforcing ribs 92, and in this embodiment, 8 reinforcing ribs 92 and 8 guide plates 5 are fixedly arranged on the inner wall of the casing 91.
When the generator is operated, external air enters from the side air inlet 93 of the base 9 and the air inlet of the rear cover 5, most of the external air enters into a gap between the stator core 3 and the shell 91 and an air gap between the stator core 3 and the rotor core 4 through the stator winding end and the rotor winding end through the non-driving end cover 12 to cool the generator, wherein the cooling air entering into the gap between the stator core 3 and the shell 91 is guided to flow through the end of the stator again through the guide plate 5, so that more air can flow along the end winding than other conditions, the cooling of the winding end is improved, and finally, all the cooling air is discharged from the air outlet 71 of the transition connecting sleeve 7 through the fan 6.
The utility model discloses in, it sets up a plurality of arc guide plates to be close to stator core drive end department in the casing, can reduce the clearance between stator core excircle and the casing, and the air current in clearance guides once more and flows through stator tip between convection current advances casing and the stator core, effective control cooling air is through getting into the clearance of stator core and casing through stator winding tip and rotor winding tip, the amount of wind of air gap between stator core and the rotor core, and coordinate through calculating, rationally set up fan diameter and caster, strengthen the diameter of the transition adapter sleeve of drive end and arrange a plurality of air outlets on the circumferencial direction of transition adapter sleeve, increase the air outlet area, make the air current discharge more effectively, thereby improve generator ventilation cooling effect, promote generator power density, guarantee the generator and move reliably for a long-term stability.
Claims (4)
1. An electrical generator with increased power density, comprising: the air conditioner comprises a base and a rotating shaft, wherein a non-driving end cover is arranged at the non-driving end of the base, an axial ventilation opening is formed in the non-driving end cover, a rear cover is arranged on the outer side of the non-driving end cover, an air inlet is formed in the rear cover, and a side air inlet is formed in the lower portion of the side wall of the non-driving end of the base; the drive end of the base is provided with a transition connecting sleeve, the transition connecting sleeve is provided with an air outlet, and the drive end of the rotating shaft is provided with a fan and a drive disk; the excitation stator component is fixedly arranged on the non-driving end cover, and the excitation rotor component is arranged at the non-driving end of the rotating shaft; the motor base comprises a cylindrical shell and a plurality of reinforcing ribs symmetrically and fixedly arranged on the inner wall of the shell, a stator core is fixedly arranged in an inner cavity of the motor base, a stator winding is wound in a groove shape of the stator core, a rotor core is arranged on the rotating shaft, a rotor winding is wound on the rotor core, and an air gap is reserved between the rotor core and the stator core; the stator core is characterized in that a plurality of guide plates are fixedly arranged on the inner wall of the shell at the side of the driving end of the stator core, and the guide plates are arc-shaped and arranged between the reinforcing ribs.
2. The power density increasing generator as set forth in claim 1, wherein: the fan is a backward tilting centrifugal fan.
3. The power density increasing generator of claim 2, wherein: the back rake angle of the fan is between 35 DEG and 45 deg.
4. The power density increasing generator according to claim 3, wherein: the back rake angle of the fan is 40 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222313490.3U CN218102834U (en) | 2022-09-01 | 2022-09-01 | Generator capable of improving power density |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222313490.3U CN218102834U (en) | 2022-09-01 | 2022-09-01 | Generator capable of improving power density |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218102834U true CN218102834U (en) | 2022-12-20 |
Family
ID=84449941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222313490.3U Active CN218102834U (en) | 2022-09-01 | 2022-09-01 | Generator capable of improving power density |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218102834U (en) |
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2022
- 2022-09-01 CN CN202222313490.3U patent/CN218102834U/en active Active
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