CN116838637A - Magnetic suspension air compressor based on built-in water course's magnetic bearing seat - Google Patents
Magnetic suspension air compressor based on built-in water course's magnetic bearing seat Download PDFInfo
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- CN116838637A CN116838637A CN202310848881.1A CN202310848881A CN116838637A CN 116838637 A CN116838637 A CN 116838637A CN 202310848881 A CN202310848881 A CN 202310848881A CN 116838637 A CN116838637 A CN 116838637A
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- magnetic bearing
- bearing seat
- water channel
- volute
- magnetic
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- 239000000725 suspension Substances 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 29
- 238000006073 displacement reaction Methods 0.000 claims description 21
- 238000005339 levitation Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 102000010637 Aquaporins Human genes 0.000 description 57
- 230000017525 heat dissipation Effects 0.000 description 14
- 238000001816 cooling Methods 0.000 description 11
- 238000007906 compression Methods 0.000 description 9
- 230000006835 compression Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 108010063290 Aquaporins Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/0563—Bearings cartridges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/058—Bearings magnetic; electromagnetic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
Abstract
The application relates to a magnetic suspension air compressor based on a magnetic bearing seat with a built-in water channel, which comprises a casing, wherein a rotor is sleeved in the casing, a front magnetic bearing seat is arranged between a first volute and the casing, a first magnetic bearing assembly is fixed in the front magnetic bearing seat, and the water channel is arranged in the front magnetic bearing seat and used for radiating heat of a primary impeller and the first volute; a rear magnetic bearing seat and a rear back plate are sequentially arranged between the shell and the second volute, and the second volute is connected with the rear magnetic bearing seat and the rear back plate; the second magnetic bearing assembly is fixed inside the rear magnetic bearing seat. The application sets a front magnetic bearing seat in the magnetic suspension air compressor, and the volute is directly arranged on the front magnetic bearing seat; a water channel is arranged on the front magnetic bearing seat, so that the problems of higher gas temperature and heat transfer in the volute are solved; meanwhile, the design of combining the front magnetic bearing seat and the back plate shortens the length of the rotating shaft and improves the critical rotating speed of the rotor.
Description
Technical Field
The application relates to a magnetic suspension air compressor based on a magnetic bearing seat with a built-in water channel, and belongs to the technical field of magnetic suspension air compressors.
Background
Compared with the traditional double-screw compression air compressor system, the magnetic suspension air compressor has the advantages of high efficiency, no mechanical friction, low power consumption, low noise and no need of adopting lubricating oil.
For magnetic levitation air compressors, heat dissipation is still a problem to be solved. In the existing magnetic suspension air compressor design, a volute needs to be fixed on a back plate, and the back plate is connected with a radial magnetic bearing seat. However, such a design increases the length of the rotor and decreases the critical rotational speed of the rotor. In addition, the impeller can cause the temperature of the gas in the volute to rise when running at high speed, so that the compression ratio of the whole air compressor is affected; in addition, the temperature of the radial magnetic bearing seat is increased, so that the heat dissipation of the radial magnetic bearing and the displacement sensor is affected, and the temperature is too high.
Disclosure of Invention
Aiming at the defects of the prior art, the application provides a magnetic suspension air compressor based on a magnetic bearing seat with a built-in water channel, wherein a front magnetic bearing seat is arranged in the magnetic suspension air compressor, and a volute is directly arranged on the front magnetic bearing seat; a water channel is arranged on the front magnetic bearing seat, so that the problems of higher gas temperature and heat transfer in the volute are solved; meanwhile, the design of combining the front magnetic bearing seat and the back plate shortens the length of the rotating shaft and improves the critical rotating speed of the rotor.
The technical scheme of the application is as follows:
a magnetic suspension air compressor based on a magnetic bearing seat with a built-in water channel comprises a shell, a rotor, a stator, a first magnetic bearing component and a second magnetic bearing component;
the rotor is sleeved in the shell, the first end of the rotor is connected with the first-stage impeller, and the first-stage impeller is sleeved in the first volute; the second end of the rotor is connected with a second-stage impeller, the second-stage impeller is sleeved in the second volute, and the first volute is communicated with the second volute;
the first magnetic bearing component, the stator and the second magnetic bearing component are sleeved outside the rotor from the first end to the second end in sequence;
a front magnetic bearing seat is arranged between the first volute and the shell, the first magnetic bearing assembly is fixed in the front magnetic bearing seat, and the first volute and the shell are both connected with the front magnetic bearing seat;
a water channel is formed in the front magnetic bearing seat and used for radiating heat of the primary impeller and the first volute;
a rear magnetic bearing seat and a rear back plate are sequentially arranged between the shell and the second volute, and the second volute is connected with the rear magnetic bearing seat and the rear back plate;
the second magnetic bearing assembly is fixed inside the rear magnetic bearing seat.
According to the application, the front magnetic bearing seat comprises a first supporting plate and a first supporting seat, the first supporting plate and the first supporting seat are of an integrally formed structure, the first supporting seat is used for fixing a first radial magnetic bearing and a first radial displacement sensor, the first supporting plate is used for fixing a first impeller and a front protection bearing and sealing a primary impeller, and the front supporting surface and the rear supporting surface of the first supporting plate are respectively a first mounting surface and a second mounting surface;
the first volute is fixed on a first mounting surface of the first supporting plate, a water channel is formed in the first supporting plate, the water channel comprises a first water channel and a second water channel which are communicated with each other, the first water channel is close to the air outlet end of the primary impeller, and the first water channel is used for radiating heat of the primary impeller; the second water channel is close to the first volute, and the second water channel is used for radiating heat of the first volute; the external water pipe enters the first water channel through the water inlet to cool the first-stage impeller, and then enters the second water channel to cool the first volute.
According to the application, the water inlet and the water outlet of the water channel are arranged on the second mounting surface of the first support plate, and the second mounting surface and the first mounting surface are arranged on two sides of the first support plate opposite to each other.
According to the application, the flowing direction of water in the first water channel is opposite to the flowing direction of water in the second water channel, so that uneven heat dissipation to the primary impeller and the first volute is avoided, and the strength performance of a product is prevented from being influenced.
According to the application, the first supporting seat is provided with the second air outlet and the second air inlet, so that wind entering through the air inlet of the shell can better cool the first magnetic bearing component.
Preferably, according to the present application, the first magnetic bearing assembly comprises a first radial displacement sensor and a first radial magnetic bearing,
the second magnetic bearing assembly comprises a second radial displacement sensor, a second radial magnetic bearing and an axial magnetic bearing,
the second radial displacement sensor, the second radial magnetic bearing and the axial magnetic bearing are fixed inside the rear magnetic bearing seat.
According to the application, a rear protection bearing seat is arranged between the axial magnetic bearing and the rear back plate, and a rear protection bearing is sleeved in the rear protection bearing seat. When the rotor falls back, the protection bearing can play a role in protecting the rotor, so that damage to the rotor is avoided, and the service life of the rotor is influenced.
According to the application, the shell is provided with a plurality of first air inlets and first air outlets, and the first air inlets are positioned in gaps between the stator and the rear magnetic bearing seat; the first air outlet is positioned in a gap between the stator and the front magnetic bearing seat or is matched with the positions of the second air outlet and the second air inlet.
According to the application, preferably, an air duct is further arranged outside the casing, and the air duct is arranged outside the first air inlet.
The beneficial effects of the application are as follows:
1. the application provides a novel magnetic bearing seat structure with a built-in water channel, which eliminates a fixed back plate of a volute, and the volute is directly arranged on a front magnetic bearing seat. The application adopts the structure of built-in water channel to solve the problems of higher gas temperature and heat transfer in the volute, and simultaneously, the design of combining the front magnetic bearing seat and the back plate shortens the length of the rotating shaft and improves the critical rotating speed of the rotor.
2. According to the application, the first magnetic bearing component and the second magnetic bearing component are cooled by air cooling provided by the external fan, and meanwhile, the water channel is arranged in the front magnetic bearing seat to cool the first-stage compression component, so that the heat dissipation requirement of the magnetic suspension air compressor is met by combining a water cooling mode and an air cooling mode.
Drawings
Fig. 1 is a schematic cross-sectional view of a magnetic levitation air compressor provided by the application.
Fig. 2 is a schematic structural diagram of a casing of the magnetic levitation air compressor according to the present application.
Fig. 3 is a schematic structural diagram of a front magnetic bearing seat according to the present application.
Fig. 4 is a schematic cross-sectional view in the direction D-D in fig. 3.
Fig. 5 is a schematic perspective view of the front magnetic bearing block.
Fig. 6 is a schematic view of the structure of the water channel in the front magnetic bearing block.
1. The device comprises a first-stage impeller, 2, a first volute, 3, a front magnetic bearing seat, 4, a casing, 5, a rotor, 6, a stator, 7, an air cylinder, 8, a rear magnetic bearing seat, 9, an axial magnetic bearing, 10, a rear protective bearing seat, 11, a second volute, 12, a second radial magnetic bearing, 13, a second radial displacement sensor, 14, a first radial magnetic bearing, 15, a first radial displacement sensor, 16, a first water channel, 17, a second water channel, 18, a first air inlet, 19, a first air outlet, 20, a second air inlet, 21, a second air outlet, 22, a rear back plate, 23, a second-stage impeller, 24, a water inlet, 25, a water outlet, 26, a first support plate, 27, a first support seat, 28, a first mounting surface, 29 and a second mounting surface.
Detailed Description
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application.
Unless defined otherwise, all directions, such as up, down, left, right, etc., referred to herein are based on the directions shown in fig. 1 of the present embodiment, and if the specific gesture changes, the directional indication changes accordingly. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Furthermore, in various embodiments of the present disclosure, the same or similar reference numerals denote the same or similar components.
In the present application, unless explicitly specified and limited otherwise, the terms "coupled," "affixed," and the like are to be construed broadly, and for example, "coupled" may be either fixedly coupled, detachably coupled, or integrally formed, unless otherwise explicitly specified. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present application may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of the claimed application.
Example 1
The embodiment provides a magnetic suspension air compressor based on a magnetic bearing seat with a built-in water channel, which is shown in fig. 1 and comprises a shell 4, a rotor 5, a stator 6, a first magnetic bearing component and a second magnetic bearing component;
a rotor 5 is sleeved in the casing 4, a first end of the rotor 5 is connected with the primary impeller 1, and the primary impeller 1 is sleeved in the first volute 2; the second end of the rotor 5 is connected with a second-stage impeller 23, the second-stage impeller 23 is sleeved inside the second volute 11, and the first volute 2 is communicated with the second volute 11;
the first magnetic bearing component, the stator 6 and the second magnetic bearing component are sleeved outside the rotor 5 from the first end to the second end in sequence;
a front magnetic bearing seat 3 is arranged between the first volute casing 2 and the casing 4, the first magnetic bearing assembly is fixed in the front magnetic bearing seat 3, the first volute casing 2 is fixed on one side of the front magnetic bearing seat 3, and the casing 4 is connected with the other side of the front magnetic bearing seat 3;
a water channel is formed in the front magnetic bearing seat 3 and used for radiating heat of the primary impeller 1 and the first volute 2;
a rear magnetic bearing seat 8 and a rear back plate 22 are sequentially arranged between the shell 4 and the second volute 11, and the second volute 11 is connected with the rear magnetic bearing seat 8 and the rear back plate 22;
the second magnetic bearing assembly is fixed inside the rear magnetic bearing block 8.
In the air compressor structure provided by the application, the front magnetic bearing seat 3 not only plays a role of a front back plate and is used for fixing the first volute 2 and sealing the primary impeller 1, but also is used for fixing a front protection bearing; furthermore, the front magnetic bearing block 3 is also used for fixing the first radial displacement sensor 15 and the first radial magnetic bearing 14; the front magnetic bearing seat 3 provided by the application integrates the functions of a plurality of components, thereby simplifying the design and facilitating the assembly. Meanwhile, by arranging the water channel on the front magnetic bearing seat 3, the heat dissipation problem of the primary impeller 1 and the first volute 2 can be effectively solved.
The working principle of the magnetic suspension air compressor is as follows: external gas enters the first volute 2 through the current collector, first-stage compression is achieved under the compression of the first-stage impeller 1, compressed gas is discharged to the outside of the magnetic suspension air compressor through the first volute 2, then enters the second volute 11 through the current collector arranged at the other end of the magnetic suspension air compressor, second-stage compression is achieved under the compression of the second-stage impeller 23, compressed gas is discharged to the outside of the magnetic suspension air compressor through the second volute 11, and the compressed gas is output to a standby scene.
When the magnetic suspension air compressor works, a cooling fan arranged outside the shell 4 provides cooling air, and the cooling air enters the motor through the first air inlet 18. A part of wind flows to the front end of the magnetic suspension motor along the air gaps of the stator 6 and the rotor 5; the wind flows out from the gap between the stator and the first radial magnetic bearing 14 and then flows out from the first air outlet 18, so that the stator 6, the rotor 5 and the first radial magnetic bearing 14 are cooled. The first magnetic bearing component of the motor is provided with an independent air duct for radiating, the second air outlet 21 and the second air inlet 20 are arranged on the front magnetic bearing seat 3, air coming along the air gaps of the stator 6 and the rotor 5 enters through the second air outlet 21 of the front magnetic bearing seat 3 and is discharged through the second air outlet 21, and finally is transmitted to the outside of the magnetic suspension motor through the first air outlet 19 on the shell 4, so that the heat radiation of the first radial magnetic bearing 14 and the first radial displacement sensor 15 is realized.
The other part of air quantity is transmitted to the rear end of the magnetic suspension motor through the air gap of the first radial magnetic bearing 14 and the air gap between the second radial displacement sensor 13 and the rotor 5, and is transmitted to the outside of the motor through the axial magnetic bearing 9 seat and the rear protection bearing seat 10. The air duct achieves heat dissipation to the second radial magnetic bearing 12, the bearing magnetic bearing and the second radial displacement sensor 13. In addition, the front magnetic bearing block 3 is provided with a first water channel 16 and a second water channel 17, which respectively realize heat dissipation to the primary impeller 1 and the first volute 2. Therefore, through combining water cooling and air cooling, the full cooling of each part in the magnetic suspension air compressor is realized.
Example 2
The present embodiment provides a magnetic suspension air compressor based on a magnetic bearing seat with built-in water channels, which is different from embodiment 1 in that:
as shown in fig. 3 and 4, the front magnetic bearing block 3 includes a first support plate 26 and a first support seat 27, and the first support plate 26 and the first support seat 27 are integrally formed, the first support seat 27 is used for fixing the first radial magnetic bearing 14 and the first radial displacement sensor 15, and the first support plate 26 is used for fixing the first impeller, the front protection bearing and sealing the primary impeller 1; the first support base 27 may be a cylindrical structure.
The first volute 2 is fixed on a first mounting surface 28 of the first supporting plate 26, a water channel is formed in the first supporting plate 26, the water channel comprises a first water channel 16 and a second water channel 17 which are communicated with each other, the first water channel 16 is close to the air outlet end of the primary impeller 1, the first water channel 16 is used for radiating heat of the primary impeller 1, and a sealing groove is formed in the first mounting surface 28 and used for sealing the primary impeller 1; the second water channel 17 is close to the first volute 2, and the second water channel 17 is used for radiating heat to the first volute 2; the external water pipe enters the first water channel 16 through the water inlet 24 to cool the primary impeller 1, and then enters the second water channel 17 to cool the first volute 2.
The existing heat dissipation mode mainly aims at the heat dissipation of the rotor 5 and the magnetic bearing, but for the air compressor, the heat generated by the impeller and the volute is large in the primary compression process, so that the temperature of output primary compressed gas is influenced, the temperature of the first radial displacement sensor 15 and the temperature of the first radial magnetic bearing 14 are also increased, the accurate control of the air compressor is influenced, and the design can effectively dissipate heat of the primary impeller 1 and the first volute 2, and further the compression efficiency of the air compressor is improved.
Example 3
The present embodiment provides a magnetic suspension air compressor based on a magnetic bearing seat with a built-in water channel, which is different from embodiment 2 in that:
as shown in fig. 3 and 5, the water inlet 24 and the water outlet 25 of the water channel are both opened on the second installation surface 29 of the first support plate 26, and the second installation surface 29 is disposed on both sides of the first support plate 26 opposite to the first installation surface 28.
Specifically, the first water channel 16 may be an annular water channel, the second water channel 17 is also an annular water channel, water enters through the water inlet 24, passes through the first water channel 16, enters into the second water channel 17 after completing the heat dissipation of the primary impeller 1, and finally is discharged through the water outlet 25 after completing the heat dissipation of the first volute 2. Firstly, the water passes through the sealing position of the inner primary impeller 1, secondly, the high temperature position of the first volute 2 and finally, the water channel circulation cooling is finished through the water outlet 25. Because the temperature of the sealed part of the first-stage impeller 1 is lower than that of the high-temperature part of the first volute 2, the trend of water flow is in accordance with the principle of flowing from a low-temperature area to a high-temperature area, so that the high temperature generated by the first volute 2 is prevented from being brought to the first-stage impeller 1.
Example 4
The present embodiment provides a magnetic suspension air compressor based on a magnetic bearing seat with a built-in water channel, which is different from embodiment 2 in that:
as shown in fig. 6, the flow direction of the water in the first water channel 16 is opposite to the flow direction of the water in the second water channel 17, so as to avoid uneven heat dissipation to the primary impeller 1 and the first volute 2 and influence the strength performance of the product.
Example 5
The present embodiment provides a magnetic suspension air compressor based on a magnetic bearing seat with a built-in water channel, which is different from embodiment 2 in that:
as shown in fig. 5, the side wall of the first supporting seat 27 is provided with the second air outlet 21 and the second air inlet 20, so that the air entering through the air inlet of the casing 4 can better cool the first magnetic bearing assembly. Specifically, the second air outlet 21 and the second air inlet 20 may be disposed on the side wall of the first support base 27.
The first magnetic bearing component of the motor is provided with an independent air duct for radiating, the second air outlet 21 and the second air inlet 20 are arranged on the front magnetic bearing seat 3, air enters through the second air outlet 21 of the front magnetic bearing seat 3 and is discharged through the second air outlet 21, and finally the air is transmitted to the outside of the magnetic suspension motor through the first air outlet 19 on the shell 4, so that the first radial magnetic bearing 14 and the first radial displacement sensor 15 are radiating.
Example 6
The present embodiment provides a magnetic suspension air compressor based on a magnetic bearing seat with built-in water channels, which is different from embodiment 1 in that:
the first magnetic bearing assembly comprises a first radial displacement sensor 15 and a first radial magnetic bearing 14,
the second magnetic bearing assembly comprises a second radial displacement sensor 13, a second radial magnetic bearing 12 and an axial magnetic bearing 9,
the second radial displacement sensor 13, the second radial magnetic bearing 12 and the axial magnetic bearing 9 are fixed inside the rear magnetic bearing seat 8, or the axial magnetic bearing 9 seat is also sleeved inside the rear magnetic bearing seat 8, and the axial magnetic bearing 9 is fixed inside the axial magnetic bearing seat.
Example 7
The present embodiment provides a magnetic suspension air compressor based on a magnetic bearing seat with built-in water channels, which is different from embodiment 1 in that:
a rear protection bearing seat 10 is also arranged between the axial magnetic bearing 9 and the rear back plate 22, and a rear protection bearing is sleeved in the rear protection bearing seat 10. When rotor 5 falls back, the protection bearing can play the guard action to rotor 5, avoids rotor 5 to cause the damage, influences rotor 5's life.
Example 8
The present embodiment provides a magnetic suspension air compressor based on a magnetic bearing seat with built-in water channels, which is different from embodiment 1 in that:
as shown in fig. 2, the casing 4 is provided with a plurality of first air inlets 18 and first air outlets 19, the first air inlets 18 are located in a gap between the stator 6 and the rear magnetic bearing seat 8, and the first air outlets 19 are located in a gap between the stator 6 and the front magnetic bearing seat 3 or are adapted to positions of the second air outlets 21 and the second air inlets 20.
Specifically, the first air inlets 18 may be uniformly formed on the circumference of the casing 4; the first air outlet 19 may be located in a gap between the stator 6 and the front magnetic bearing seat 3, or the first air outlet 19 is adapted to the second air outlet 21 and the second air inlet 20 located on the front magnetic bearing seat 3. The arrangement has the advantages that a part of wind can flow out from the gap between the stator 6 and the front magnetic bearing seat 3, so that heat dissipation of the stator 6 and the rotor 5 is realized; and the other part of wind enters from the second air inlet 20 and is discharged from the second air outlet 21, so that the cooling of the first magnetic suspension assembly is realized.
Example 9
The present embodiment provides a magnetic suspension air compressor based on a magnetic bearing seat with built-in water channels, which is different from embodiment 5 in that:
the outside of casing 4 still is provided with dryer 7, and dryer 7 sets up the outside at first air intake 18. The wind drum 7 plays a role in guiding flow, so that after wind enters from the inlet of the wind drum 7, the wind enters the shell 4 along the circumferential direction of the wind drum 7 through the first air inlet 18, and therefore heat dissipation is carried out on parts in the compressor.
While the foregoing description illustrates and describes the preferred embodiments of the present application, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, but is capable of use in various other combinations, modifications and environments and is capable of changes within the scope of the inventive subject matter, either as a result of the foregoing teachings or as a result of the knowledge or knowledge of the relevant art. And that modifications and variations which do not depart from the spirit and scope of the application are intended to be within the scope of the appended claims.
Claims (9)
1. The magnetic suspension air compressor based on the magnetic bearing seat of the built-in water channel is characterized by comprising a shell, a rotor, a stator, a first magnetic bearing component and a second magnetic bearing component;
the rotor is sleeved in the shell, the first end of the rotor is connected with the first-stage impeller, and the first-stage impeller is sleeved in the first volute; the second end of the rotor is connected with a second-stage impeller, the second-stage impeller is sleeved in the second volute, and the first volute is communicated with the second volute;
the first magnetic bearing component, the stator and the second magnetic bearing component are sleeved outside the rotor from the first end to the second end in sequence;
a front magnetic bearing seat is arranged between the first volute and the shell, the first magnetic bearing assembly is fixed in the front magnetic bearing seat, and the first volute and the shell are both connected with the front magnetic bearing seat;
a water channel is formed in the front magnetic bearing seat and used for radiating heat of the primary impeller and the first volute;
a rear magnetic bearing seat and a rear back plate are sequentially arranged between the shell and the second volute, and the second volute is connected with the rear magnetic bearing seat and the rear back plate;
the second magnetic bearing assembly is fixed inside the rear magnetic bearing seat.
2. The magnetic suspension air compressor based on the built-in water channel magnetic bearing seat according to claim 1, wherein the front magnetic bearing seat comprises a first supporting plate and a first supporting seat, the first supporting plate and the first supporting seat are in an integrated structure, the first supporting seat is used for fixing a first radial magnetic bearing and a first radial displacement sensor, the first supporting plate is used for fixing a first impeller and a front protection bearing and sealing a primary impeller, and the front supporting surface and the rear supporting surface of the first supporting plate are respectively a first mounting surface and a second mounting surface;
the first volute is fixed on a first mounting surface of the first supporting plate, a water channel is formed in the first supporting plate, the water channel comprises a first water channel and a second water channel which are communicated with each other, the first water channel is close to the air outlet end of the primary impeller, and the first water channel is used for radiating heat of the primary impeller; the second water channel is close to the first volute, and the second water channel is used for radiating heat of the first volute; the external water pipe enters the first water channel through the water inlet to cool the first-stage impeller, and then enters the second water channel to cool the first volute.
3. The magnetic levitation air compressor based on the built-in water channel magnetic bearing seat according to claim 2, wherein the water inlet and the water outlet of the water channel are both formed on the second mounting surface of the first support plate.
4. A magnetic levitation air compressor based on a magnetic bearing seat with built-in water channel as claimed in claim 2, wherein the flow direction of water in the first water channel is opposite to the flow direction of water in the second water channel.
5. The magnetic levitation air compressor based on the built-in water channel magnetic bearing seat according to claim 2, wherein the first supporting seat is provided with a second air outlet and a second air inlet.
6. A magnetic levitation air compressor based on built-in waterway magnetic bearing block of claim 1 or 5, wherein the first magnetic bearing assembly includes a first radial displacement sensor and a first radial magnetic bearing,
the second magnetic bearing assembly comprises a second radial displacement sensor, a second radial magnetic bearing and an axial magnetic bearing,
the second radial displacement sensor, the second radial magnetic bearing and the axial magnetic bearing are fixed inside the rear magnetic bearing seat.
7. The magnetic suspension air compressor based on the magnetic bearing seat with the built-in water channel as claimed in claim 6, wherein a rear protection bearing seat is further arranged between the axial magnetic bearing and the rear back plate, and a rear protection bearing is sleeved in the rear protection bearing seat.
8. The magnetic suspension air compressor based on the built-in water channel magnetic bearing seat according to claim 6, wherein a plurality of first air inlets and first air outlets are formed in the casing, and the first air inlets are positioned in a gap between the stator and the rear magnetic bearing seat; the first air outlet is positioned in a gap between the stator and the front magnetic bearing seat or is matched with the positions of the second air outlet and the second air inlet.
9. The magnetic levitation air compressor based on the built-in water channel magnetic bearing seat according to claim 8, wherein an air duct is further arranged outside the casing, and the air duct is arranged outside the first air inlet.
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| CN202310848881.1A CN116838637B (en) | 2023-07-12 | 2023-07-12 | Magnetic suspension air compressor based on built-in water course's magnetic bearing seat |
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| CN106451881A (en) * | 2016-11-21 | 2017-02-22 | 南京磁谷科技有限公司 | Magnetic suspension air blower air cooling structure |
| JP2019110645A (en) * | 2017-12-15 | 2019-07-04 | 株式会社Ihi | Rotary machine |
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| JP2021134754A (en) * | 2020-02-28 | 2021-09-13 | 三菱重工マリンマシナリ株式会社 | Supercharger |
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| CN106451881A (en) * | 2016-11-21 | 2017-02-22 | 南京磁谷科技有限公司 | Magnetic suspension air blower air cooling structure |
| JP2019110645A (en) * | 2017-12-15 | 2019-07-04 | 株式会社Ihi | Rotary machine |
| CN209278185U (en) * | 2019-07-16 | 2019-08-20 | 山东天瑞重工有限公司 | A kind of energy conservation magnetic suspension motor |
| CN110425156A (en) * | 2019-08-29 | 2019-11-08 | 势加透博洁净动力如皋有限公司 | A kind of two-stage gas suspension centrifugal electric directly drives air compressor machine |
| JP2021134754A (en) * | 2020-02-28 | 2021-09-13 | 三菱重工マリンマシナリ株式会社 | Supercharger |
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| CN116838637B (en) | 2024-01-05 |
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