CN212429328U - Radial magnetic bearing cooling device at front end of magnetic suspension vapor compressor - Google Patents
Radial magnetic bearing cooling device at front end of magnetic suspension vapor compressor Download PDFInfo
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- CN212429328U CN212429328U CN202020873756.8U CN202020873756U CN212429328U CN 212429328 U CN212429328 U CN 212429328U CN 202020873756 U CN202020873756 U CN 202020873756U CN 212429328 U CN212429328 U CN 212429328U
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Abstract
The utility model provides a magnetic suspension vapor compressor front end radial magnetic bearing cooling device, which comprises a cooling fan; the cooling fan is fixedly arranged at an air inlet of a shell of the motor of the magnetic suspension compressor through a screw; one side of the air inlet of the shell is a rear radial magnetic bearing, and the other side of the air inlet of the shell is a motor stator winding, a stator core and a motor rotor of the motor part of the magnetic suspension water vapor compressor; an air gap between the stator and the rotor of the motor of the magnetic suspension vapor compressor is communicated with an air outlet of the motor shell; an air guide channel is arranged at an air outlet of a shell of a motor of the magnetic suspension compressor, and the air outlet is communicated with the air guide channel; and the air outlet of the air guide flow channel faces to the front radial magnetic bearing. A magnetic suspension vapor compressor front end radial magnetic bearing cooling device, simple structure, simple to operate can reduce the operating temperature of magnetic bearing, makes magnetic bearing operating condition stable, increase of service life.
Description
Technical Field
The utility model belongs to magnetic suspension vapor compressor field especially relates to a magnetic suspension vapor compressor front end radial magnetic bearing cooling device.
Background
The magnetic suspension steam compressor has the advantages of high-speed operation of the rotor in a suspension state, no mechanical friction, direct connection structure of rigid connection of the impeller and the rotor, simple structure and convenient installation and maintenance. The magnetic suspension water vapor compressor has obvious energy-saving and cost-reducing effects. However, the working medium of the compressor is steam with higher temperature, so that the temperature of the volute and the connecting plate is 20-30 ℃ higher than that of the working medium of the magnetic suspension blower, the temperature of the front radial magnetic bearing is greatly increased through heat conduction and heat radiation, the insulating service life of the coil of the front radial magnetic bearing is shortened by working at high temperature, and the service life of the whole magnetic suspension steam compressor is further influenced. In addition, because a gap is left between the rotor and the seal of the magnetic suspension compressor, water vapor leaks out of the seal and enters the front radial magnetic bearing, and if the water is condensed into liquid water at the magnetic bearing coil, the service life of the front radial magnetic bearing is influenced.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a magnetic suspension water vapor compressor front radial magnetic bearing cooling device to overcome the above-mentioned defects in the prior art.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a magnetic suspension vapor compressor front end radial magnetic bearing cooling device comprises a cooling fan; the cooling fan is fixedly arranged at an air inlet of a shell of the motor of the magnetic suspension compressor through a screw; one side of the air inlet of the shell is a rear radial magnetic bearing, and the other side of the air inlet of the shell is a motor stator winding, a stator core and a motor rotor of the motor part of the magnetic suspension water vapor compressor; an air gap between the stator and the rotor of the motor of the magnetic suspension vapor compressor is communicated with an air outlet of the motor shell;
an air guide channel is arranged at an air outlet of a shell of a motor of the magnetic suspension compressor, and the air outlet is communicated with the air guide channel; and the air outlet of the air guide flow channel faces to the front radial magnetic bearing.
Furthermore, the air guide flow channel is of a U-shaped pipe structure, one end of the air guide flow channel is connected with an air outlet of the machine shell of the motor, and the other end of the air guide flow channel faces the front radial magnetic bearing.
Furthermore, the number of the air guide channels is two; the two air guide runners are symmetrically arranged.
Furthermore, a sealing structure is arranged above the front radial magnetic bearing.
Furthermore, the cooling fan is correspondingly provided with a mounting plate, and the mounting plate is fixed at the air inlet of the shell of the motor of the magnetic suspension compressor through a screw.
Compared with the prior art, the utility model discloses following advantage has:
1) the cooling device has simple structure and convenient installation. Through the wind guide cooling flow channel, the radial magnetic bearing performs heat convection before cooling wind blows directly, and the working temperature of the magnetic bearing can be reduced.
2) The cooling wind can blow the water vapor leaked from the sealing part into the air, and prevent the water vapor from entering the front radial magnetic bearing.
The above two points can stabilize the working state of the magnetic bearing and prolong the service life.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic view of a magnetic suspension water vapor compressor front end radial magnetic bearing cooling device according to an embodiment of the present invention;
fig. 2 is a schematic view of a part of an air guide flow passage according to an embodiment of the present invention.
Description of reference numerals:
1. a cooling fan; 2. a rear radial magnetic bearing; 3. a magnetic suspension vapor compressor motor; 4. an air guide flow channel; 5. a front radial magnetic bearing; 6. and (5) sealing the structure.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is an assembly view, and fig. 2 is a partially enlarged view showing the flow direction of the cooling wind and the leakage water vapor. When the magnetic suspension vapor compression works, the temperature of the volute connecting plate is high, so that the front radial magnetic bearing 5 works at a higher temperature, and in order to ensure that the front radial magnetic bearing 5 works stably and the service life is prolonged, the temperature of the front radial magnetic bearing 5 needs to be reduced. Because the magnetic suspension steam compressor adopts an air cooling mode to cool the motor stator and the motor rotor, on the basis, air after cooling the motor stator and the motor rotor is guided into the front radial magnetic bearing 5 part to carry out forced convection of air so as to cool the front radial magnetic bearing 5, thereby reducing the temperature of the front radial magnetic bearing 5 during working. Further, by the action force of the introduced cooling air, the pressure of the cooling air is higher than the pressure of the leakage water vapor, and the water vapor leaking from the gap between the seal structure 6 and the rotor can be prevented from entering the front radial magnetic bearing 5, thereby playing a role of protection.
The cooling fan 1 is fixedly installed at an air inlet of a machine shell of the motor part through screws, cooling air is blown into a motor part of the magnetic suspension compressor, a small part of the cooling air enters the radial magnetic bearing 2 to be cooled, most of the cooling air carries out convective heat transfer on a motor stator winding, a stator core and a motor rotor of a motor 3 of the magnetic suspension water vapor compressor, the temperature of the cooling air is reduced, the cooling air enters an air guide flow channel 4 from an air outlet of the machine shell of the motor part after passing through an air gap between the stator and the rotor, the two air guide flow channels 4 are installed on the machine shell of the motor part at an interval of 180 degrees. After the cooling air comes out from the air guide flow passage 4, the convection heat exchange cooling is directly carried out on the front radial magnetic bearing 5, and the temperature of the cooling air is reduced. In addition, when the external magnetic suspension vapor compressor normally operates, a small amount of vapor leaks through the sealing structure 6, and the cooling air led out from the air guide flow passage 4 can directly blow the leaked vapor into the air to prevent the leaked vapor from entering the front radial magnetic bearing 5.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A radial magnetic bearing cooling device at the front end of a magnetic suspension vapor compressor is characterized in that: comprises a cooling fan (1); the cooling fan (1) is fixedly arranged at an air inlet of a shell of the motor of the magnetic suspension compressor; a rear radial magnetic bearing (2) is arranged on one side of the air inlet of the shell, and a motor stator winding, a stator core and a motor rotor of a motor (3) part of the magnetic suspension water vapor compressor are arranged on the other side of the air inlet of the shell; an air gap between a stator and a rotor of the magnetic suspension vapor compressor motor (3) is communicated with an air outlet of a motor shell;
an air guide flow channel (4) is arranged at an air outlet of a shell of a motor of the magnetic suspension compressor, and the air outlet is communicated with the air guide channel; and the air outlet of the air guide flow channel (4) faces to the front radial magnetic bearing (5).
2. The cooling device for the front radial magnetic bearing of the magnetic suspension water vapor compressor as claimed in claim 1, wherein: the air guide flow passage (4) is of a U-shaped pipe structure, one end of the air guide flow passage is connected with an air outlet of a machine shell of the motor, and the other end of the air guide flow passage faces to the front radial magnetic bearing (5).
3. The cooling device for the front radial magnetic bearing of the magnetically levitated water vapor compressor of claim 2, wherein: the number of the air guide channels is two; the two air guide flow passages (4) are symmetrically arranged.
4. A magnetic levitation steam compressor front end radial magnetic bearing cooling device as recited in claim 3, wherein: and a sealing structure (6) is arranged above the front radial magnetic bearing (5).
5. The cooling device for the front radial magnetic bearing of the magnetic suspension water vapor compressor as claimed in claim 1, wherein: and the cooling fan (1) is correspondingly provided with a mounting plate, and the mounting plate is fixed at the air inlet of the shell of the motor of the magnetic suspension compressor through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020873756.8U CN212429328U (en) | 2020-05-21 | 2020-05-21 | Radial magnetic bearing cooling device at front end of magnetic suspension vapor compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020873756.8U CN212429328U (en) | 2020-05-21 | 2020-05-21 | Radial magnetic bearing cooling device at front end of magnetic suspension vapor compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212429328U true CN212429328U (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020873756.8U Active CN212429328U (en) | 2020-05-21 | 2020-05-21 | Radial magnetic bearing cooling device at front end of magnetic suspension vapor compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212429328U (en) |
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2020
- 2020-05-21 CN CN202020873756.8U patent/CN212429328U/en active Active
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Address after: 300457 Block D, No. 90, 12th Avenue, Binhai New Area Development Zone, Tianjin Patentee after: Tianjin Feixuan Technology Co.,Ltd. Address before: 300457 Block D, No. 90, 12th Avenue, Binhai New Area Development Zone, Tianjin Patentee before: TIANJIN EMAGING TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |