CN110425156A - A kind of two-stage gas suspension centrifugal electric directly drives air compressor machine - Google Patents
A kind of two-stage gas suspension centrifugal electric directly drives air compressor machine Download PDFInfo
- Publication number
- CN110425156A CN110425156A CN201910806155.7A CN201910806155A CN110425156A CN 110425156 A CN110425156 A CN 110425156A CN 201910806155 A CN201910806155 A CN 201910806155A CN 110425156 A CN110425156 A CN 110425156A
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- Prior art keywords
- shell
- level
- main shaft
- air compressor
- compressor machine
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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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
- F04D17/12—Multi-stage pumps
- F04D17/122—Multi-stage pumps the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage 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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- 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
-
- 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
- F04D29/286—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors multi-stage rotors
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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
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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
- F04D29/5806—Cooling the drive system
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/662—Balancing of rotors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of two-stage gas suspension centrifugal electrics directly to drive air compressor machine, including the shell, motor stator, main shaft set gradually from outside to inside, the impeller, locknut and spiral case of main shaft two sides is arranged in, the cooling system on shell is arranged in.The present invention has the advantages that shell, motor stator, main shaft, impeller and spiral case carry out integrated design, reduce package size and weight.Both stage impellers are connected by intermediate conduit, realize small flow high pressure ratio.Both stage impellers axial thrust is cancelled out each other, and the axial force that thrust bearing applies is reduced.Using radial and axial air-bearing, air film is formed by the high pressure gas itself generated, reduces bearing and friction rotor, forms gas suspension motor high-speed direct-drive, reduce mechanical loss.Gas will be partially compressed by intermediate duct to be introduced into case component, realize to the cooling of motor stator, main shaft, transverse bearing and thrust bearing, improve the service life of air compressor machine.
Description
Technical field
The present invention relates to hydrogen fuel cell technical field of engines, and in particular to a kind of two-stage gas suspension centrifugal electric is straight
Drive air compressor machine.
Background technique
At present develop new energy source fuel cell automobile be considered as transportation and energy's power transition important link and by weight
Depending on.Proton Exchange Membrane Fuel Cells is representative the most mature in current fuel cell family.It is with hydrogen and air (air
In oxygen) do fuel electrochemical reaction occur, the chemical energy of fuel is directly changed into the device of electric energy, reaction generates water.
It has both pollution-free, high efficiency, is applicable in wide, low noise, room temperature quick start, can quickly supplement energy and has a modular construction
The advantages that, it is more likely that one of the main power source as the automobile after traditional combustion engine.
In order to ensure that fuel battery engines work normally, engine generally requires hydrogen supply subsystem, air supply
The auxiliary systems such as subsystem and circulating water management subsystem.Largely studies have shown that high pressure, the air supply pair of big flow
The power output for improving existing fuel battery engines has a significant effect.Therefore, general air enters before engine,
Air inlet is pressurized, air compressor is exactly a kind of energy conversion device for realizing the target, is fuel battery engines sky
One of the important spare part of gas supply system, the required air of fuel battery car engine power output supplies under different operating conditions
It should manage and regulate and control mainly by air compressor machine and realize.
Centrifugal air compressor design at present generally uses electric-machine directly-driven mode, rotor and being made of one of main shaft knot
Structure, main-axis end are fixedly connected receded disk impeller, and impeller is built in spiral case.Under the rotation of rotor ultrahigh speed, impeller is driven
Gas high speed rotation interacts with spiral case and generates high pressure, mass flow air, and supply fuel battery engines are used for fuel cell
The generation of electrochemical reaction inside pile, middle (center) bearing provide supports main shaft-impeller integration rotary part high speed rotation.
The straight centrifugal air compressor that drives generally uses motor driven, consumes fuel battery car engine power, about fuel
The 15-20% of battery engine general power output.Therefore, to improve effective engine power output, air compressor machine power consumption, height are reduced
Fast efficiently air compressor machine technology attracts extensive attention.
It is improved with centrifugal air compressor revolving speed, rotor bears increasing centrifugal force effect.Permanent magnet material in rotor
Expect general compression strength 1000Mpa or so, and tensile strength 80Mpa or so, the characteristic with resistance to compression not tension turns in air compressor machine
Son design is upper generally to use the lesser rotor of diameter, it is therefore an objective to reduce destruction of the high speed centrifugation power to permanent magnet.
In addition, electrochemical reaction of fuel battery be carried out under certain temperature, humidity and gas pressure, and
Reaction occurs also with the release of certain heat, therefore the air in the air supply system of fuel battery engines has height
Temperature, high humidity, high pressure, big flow and oil-free feature, the intervention of oil liquid can reduce the catalytic action of fuel-cell catalyst, significantly
Reduce fuel battery engines power output.
Meanwhile centrifugal air compressor often uses ultrahigh rotating speed to improve the pressure and flow of delivery air
The revolving speed of (80000rpm or more) controls implementation, and existing tradition rolls and sliding oil-lubricated bearing is difficult to meet the requirements,
First is that the oil-free operating environment requirements of fuel battery engines are unsatisfactory for, second is that making rotor-master due to the presence of mechanical friction
Axis revolving speed reduces and frictional dissipation increases.Even if specific bearing can satisfy requirement, but also bring along rotor heat problem and rotor
The problem of dynamic stability.Next will also result in the danger of bearing supporting member breakage, and it is difficult to increase fault detection and diagnosis
Degree.In addition, superfast rotor also brings along heat dissipation and cooling problem, in conclusion these problems are all to supports main shaft-impeller
The bearing of ultrahigh speed rotation proposes better requirement, needs to be integrated in specific centrifugal air compressor design scheme
Consider and solves.
Summary of the invention
The purpose of the present invention is to provide a kind of two-stage gas suspension centrifugal electrics directly to drive air compressor machine, to solve above-mentioned background
The problem of being proposed in technology.
To achieve the above object, the invention provides the following technical scheme: a kind of two-stage gas suspension centrifugal electric directly drives sky
Press, including the shell, motor stator, main shaft set gradually from outside to inside, be arranged in the impellers of the main shaft two sides, locknut and
Spiral case is arranged in the intracorporal cooling system of the shell.
Further, the shell both ends are arranged with level-one spiral case and second level spiral case, the level-one spiral case and second level respectively
Spiral case is connect with the housing seal, is connected between the level-one spiral case and second level spiral case by setting intermediate conduit.
Further, the both ends of the main shaft are respectively equipped with axle sleeve, and thrust disc is wherein equipped between one end axle sleeve and main shaft,
The impeller includes one stage impeller and sencond stage impeller, and the one stage impeller and sencond stage impeller connect with the axle sleeve at both ends respectively
It connects.
Further, the both ends of the main shaft are arranged with transverse bearing respectively, are arranged with bearing on the transverse bearing in left side
Seat, the bearing block are fixedly connected with the shell, and the transverse bearing on right side is fixedly connected with the shell, the electric machine main shaft
Both ends and the transverse bearing between be equipped with gap.
Further, the two sides of the thrust disc are respectively equipped with thrust bearing.
Further, level-one backboard and second level backboard, institute are respectively equipped between the level-one spiral case, second level spiral case and shell
It states and is bolted to connection between level-one backboard and the bearing block, pass through bolt between the second level backboard and the shell
It is fixedly connected.
Further, pass through setting one between the one stage impeller and sencond stage impeller and the both ends of the electric machine main shaft respectively
Grade locknut is fixedly connected with second level locknut.
Further, the cooling system includes water cooling plant and air-cooling apparatus, and the water cooling plant includes being arranged in institute
State the intracorporal spiral helicine water channel of shell, setting cold water on the housing enters connector and cold water water outlet connector,
The air-cooling apparatus includes the first cold air connector being arranged in the intermediate conduit, is arranged in the shell upper left
The second cold air connector at angle and the third cold air connector in the shell lower left corner are arranged in the intracorporal axially extending bore of the shell and by two
The radial through-hole that gap between grade backboard and shell is formed, the axially extending bore are connected to the radial through-hole,
By piping connection, compressed gas is drawn in the intermediate duct for the first cold air connector and the second cold air connector
Successively pass through the first cold air connector, the second cold air connector, axially extending bore, radial through-hole, the transverse bearing on right side and institute out
State gap between main shaft right end, motor stator respectively the cavity between shell between main shaft, left side transverse bearing with
Gap, the thrust disc between the main shaft left end respectively the gap between the level-one backboard and bearing block, from third
The discharge of cold air connector.
Further, copper pipe is equipped in the axially extending bore, the axially extending bore quantity is 6, the axially extending bore edge
The surrounding of the shell is axially equally spaced, and the radial through-hole equidistantly divides between the shell right part and second level backboard
Cloth.
Beneficial effects of the present invention:
1, the motor in the present invention, casing and main shaft carry out integrated design, reduce package size and weight.
2, two-stage half-opened impeller is connected by intermediate conduit, realizes small flow high pressure ratio.Gas mass flow is at least up to
To 300g/s, compression ratio reaches 4, and revolving speed is up to 50000-110000rpm.
3, both stage impellers axial thrust is cancelled out each other, and reduces the axial force that thrust bearing applies.Using radial and axial gas
Floating axle is held, and is formed air film by the high pressure gas itself generated, is reduced bearing and friction rotor, it is straight to form gas suspension motor high speed
It drives, reduces mechanical loss, improve the service life of air compressor machine.
4, it by being arranged cooling system on shell, realizes to cooling inside shell and motor, by intermediate duct by portion
Partial compression gas is introduced into case component, is realized to the cooling of motor, main shaft, transverse bearing and thrust bearing, is improved air compressor machine
Service life.
Detailed description of the invention
Fig. 1 is external structure schematic diagram of the invention；
Fig. 2 is schematic diagram of internal structure of the invention；
Fig. 3 is the gas flow structural schematic diagram of air-cooling apparatus of the invention；
Fig. 4 is internal structure partial enlargement diagram of the invention；
Wherein: 1- shell, 2- motor stator, 4- main shaft, 5- one stage impeller, 6- sencond stage impeller, 7- level-one spiral case, 8- second level
Spiral case, 9- intermediate conduit, 10- axle sleeve, 11- level-one backboard, 12- second level backboard, 13- transverse bearing, 16- bearing block, 17- thrust
Disk, 19- thrust bearing, 21- level-one locknut, 22- second level locknut, 24- water channel, 25- cold water enter connector, and the water outlet of 26- cold water connects
Head, 27- the first cold air connector, 28- the second cold air connector, 29- third cold air connector, 30- axially extending bore, 31- radial through-hole.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1-4, the present invention provides a kind of two-stage gas suspension centrifugal electric and directly drives air compressor machine, including from outside to inside
The impeller, locknut and spiral case of 4 two sides of main shaft is arranged in shell 1, motor stator 2, the main shaft 4 set gradually, is arranged in shell 1
On cooling system.
1 both ends of shell are arranged with level-one spiral case 7 and second level spiral case 8, the level-one spiral case 7 and second level spiral case 8 respectively
It is tightly connected with the shell 1, is connected between the level-one spiral case 7 and second level spiral case 8 by setting intermediate conduit 9.
The both ends of main shaft 4 are respectively equipped with axle sleeve 10, and thrust disc 17, the impeller are wherein equipped between one end axle sleeve and main shaft
Including one stage impeller 5 and sencond stage impeller 6, one stage impeller 5 and sencond stage impeller 6 are fixed respectively with the axle sleeve 10 at both ends and are connected
It connects.
Be respectively equipped with level-one backboard 11 and second level backboard 12 on the axle sleeve 10 at both ends, prevent gas from what spiral case of impeller into
Enter in shell 1.
The both ends of main shaft 4 are arranged with transverse bearing 13 respectively, are arranged with bearing block 16, bearing on the transverse bearing 13 in left side
Seat 16 is fixedly connected with shell 1, and the transverse bearing 13 on right side is fixedly connected with shell 1, the both ends of main shaft 4 and transverse bearing 13 it
Between be equipped with gap.Transverse bearing 13 is made of cartridge housing, stop pin, transverse bearing thin slice, when main shaft runs at high speed, main shaft with
Air film is formed between transverse bearing, reduces the friction between bearing and rotor, main shaft.
The two sides of thrust disc 17 are respectively equipped with thrust bearing 19, and thrust bearing 19 is by gasket, elastic slice, pressing plate and paillon group
At when main shaft runs at high speed, forming air film between main shaft and thrust bearing, reduce the friction between bearing and rotor, main shaft.
The transverse bearing 13 and thrust bearing 19 are air foil bearing, and the protrusion of level-one backboard is close to thrust disc
The position of surrounding is equipped with inverted trapezoid boss, and the width on the bottom edge of trapezoid boss is greater than the thickness of thrust disc, thrust bearing
Boss is arranged in respectively and in the gap of level-one backboard and bearing block in surrounding outer.
Level-one backboard 11 and second level backboard 12 are respectively equipped between the level-one spiral case 7, second level spiral case 8 and shell 1, it is described
It is bolted to connection between level-one backboard 11 and the bearing block 16, leads between the second level backboard 12 and the shell 1
Bolt is crossed to be fixedly connected.
Between the one stage impeller 5 and sencond stage impeller 6 and the both ends of the main shaft 4 respectively by setting level-one locknut 21 and
Second level locknut 22 is fixedly connected.
Shell 1 is equipped with cooling system, and cooling system includes water cooling plant and air-cooling apparatus, and water cooling plant includes that setting exists
The intracorporal spiral helicine water channel 24 of shell, the cold water being arranged on shell 1 enter connector 25 and cold water water outlet connector 26.
Air-cooling apparatus includes the first cold air connector 27 being arranged in intermediate conduit 9, is arranged in the second of 1 upper left corner of shell
The third cold air connector 29 of cold air connector 28 and the shell lower left corner, is arranged in axially extending bore 30 and radial through-hole in shell 1
31, axially extending bore 30 is interior to be equipped with copper pipe, and quantity is 6, and axially extending bore 30 is axially equally spaced along shell 1,31 edge of radial through-hole
It is equally spaced between 1 right part of shell and second level backboard, the first cold air connector 27 and the second cold air connector 2 pass through piping connection.
The flow path of compressed gas is in air-cooling apparatus, and compressed gas successively passes through first cold air from the inner extraction of intermediate duct 9
Connector 27, the second cold air connector 28, axially extending bore 30, between 4 right end of radial through-hole 31, the transverse bearing 13 on right side and main shaft
Gap, motor stator 2 respectively the cavity between shell 1 between main shaft 4, left side transverse bearing 13 and 4 left end of main shaft it
Between gap, thrust disc 17 respectively the gap between level-one backboard 11 and bearing block 16, from third cold air connector 29 be discharged.
The present invention drives both stage impellers operating in use, by motor driven spindle operation, axially upper meeting when main shaft rotates
There is axial force generation, connected by both stage impellers, the part axial force of main shaft in the axial direction, the diameter being arranged on main shaft can be offset
To bearing and thrust bearing when main shaft runs at high speed, generates high pressure gas and form air film, reduce the friction of bearing and rotor, together
When the air film that generates of thrust bearing can play a buffer function in main shaft or so vibration, main shaft and impeller vibration to the left
When, the air film that the thrust bearing on the left side generates can stop main shaft vibration to the left, main shaft to the right when, avoid the left and right of impeller from moving
It is dynamic to be collided with spiral case.
It introduces compressed gas from intermediate conduit simultaneously to enter in housing chamber, along the gas flow flowing of setting, to motor, master
Axis, bearing are gas-cooled, and cooling effect is prominent, avoid the component to run at high speed in shell deformation or damage at high temperature, mention
The service life of high air compressor machine.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. a kind of two-stage gas suspension centrifugal electric directly drives air compressor machine, it is characterised in that: including the shell set gradually from outside to inside
Impeller, locknut and the spiral case at the main shaft both ends is arranged in body, motor stator, main shaft, is arranged in the intracorporal cooling system of the shell
System.
2. a kind of two-stage gas suspension centrifugal electric according to claim 1 directly drives air compressor machine, it is characterised in that: the shell
Body both ends are arranged with level-one spiral case and second level spiral case respectively, and the level-one spiral case and second level spiral case connect with the housing seal
It connects, is connected between the level-one spiral case and second level spiral case by setting intermediate conduit.
3. a kind of two-stage gas suspension centrifugal electric according to claim 1 directly drives air compressor machine, it is characterised in that: the master
The both ends of axis are respectively equipped with axle sleeve, wherein between one end axle sleeve and main shaft be equipped with thrust disc, the impeller include one stage impeller and
Sencond stage impeller, the one stage impeller and sencond stage impeller are connect with the axle sleeve at both ends respectively.
4. a kind of two-stage gas suspension centrifugal electric according to claim 1 directly drives air compressor machine, it is characterised in that: the master
The both ends of axis are arranged with transverse bearing respectively, and bearing block, the bearing block and the shell are arranged on the transverse bearing in left side
Be fixedly connected, the transverse bearing on right side is fixedly connected with the shell, the both ends of the electric machine main shaft and the transverse bearing it
Between be equipped with gap.
5. a kind of two-stage gas suspension centrifugal electric according to claim 1 directly drives air compressor machine, it is characterised in that: described to push away
The two sides of power disk are equipped with thrust bearing.
6. a kind of two-stage gas suspension centrifugal electric according to claim 2 directly drives air compressor machine, it is characterised in that: described one
Level-one backboard and second level backboard, the level-one backboard and the bearing block are respectively equipped between grade spiral case, second level spiral case and shell
Between be bolted to connection, be bolted to connection between the second level backboard and the shell.
7. a kind of two-stage gas suspension centrifugal electric according to claim 3 directly drives air compressor machine, it is characterised in that: described one
Connect respectively by the way that setting level-one locknut and second level locknut are fixed between grade impeller and sencond stage impeller and the both ends of the electric machine main shaft
It connects.
8. a kind of two-stage gas suspension centrifugal electric according to claim 1 directly drives air compressor machine, it is characterised in that: described cold
But system includes water cooling plant and air-cooling apparatus, the water cooling plant include setting the intracorporal spiral helicine water channel of the shell,
The cold water being arranged on the housing enters connector and cold water water outlet connector,
The air-cooling apparatus includes the first cold air connector being arranged in the intermediate conduit, the shell upper left corner is arranged in
The third cold air connector of second cold air connector and the shell lower left corner is arranged in the intracorporal axially extending bore of the shell and is carried on the back by second level
The radial through-hole that gap between plate and shell is formed, the axially extending bore are connected to the radial through-hole,
The first cold air connector and the second cold air connector by piping connection, compressed gas drawn in the intermediate duct according to
It is secondary by the first cold air connector, the second cold air connector, axially extending bore, radial through-hole, right side transverse bearing and the master
Gap, motor stator between axis right end respectively the cavity between shell between main shaft, left side transverse bearing with it is described
Gap, the thrust disc between main shaft left end respectively the gap between the level-one backboard and bearing block, from third cold air
Connector discharge.
9. a kind of two-stage gas suspension centrifugal electric according to claim 8 directly drives air compressor machine, it is characterised in that: the axis
Copper pipe is equipped with into through-hole, the axially extending bore quantity is 6, axial equidistant point along the surrounding of the shell of the axially extending bore
Cloth, the radial through-hole are equally spaced between the shell right part and second level backboard.
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| CN201910806155.7A CN110425156A (en) | 2019-08-29 | 2019-08-29 | A kind of two-stage gas suspension centrifugal electric directly drives air compressor machine |
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|---|---|---|---|
| CN201910806155.7A CN110425156A (en) | 2019-08-29 | 2019-08-29 | A kind of two-stage gas suspension centrifugal electric directly drives air compressor machine |
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| CN111271304A (en) * | 2020-02-27 | 2020-06-12 | 海德韦尔(太仓)能源科技有限公司 | Centrifugal air compressor with double cooling systems |
| CN111365298A (en) * | 2020-04-10 | 2020-07-03 | 海德韦尔(太仓)能源科技有限公司 | Air cooling system of electric centrifugal air compressor |
| CN111478497A (en) * | 2020-04-21 | 2020-07-31 | 北京稳力科技有限公司 | Two-stage series centrifugal gas compressor and motor thereof |
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| CN112780583A (en) * | 2021-02-04 | 2021-05-11 | 北京稳力科技有限公司 | Fuel cell stack and two-stage centrifugal compressor |
| CN112879353A (en) * | 2021-04-02 | 2021-06-01 | 烟台东德实业有限公司 | High-speed centrifugal compressor backward flow air cooling system |
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| CN113123983A (en) * | 2021-04-07 | 2021-07-16 | 西安交通大学 | Two-stage high-speed centrifugal air compressor with double cooling systems for fuel cell |
| CN113250981A (en) * | 2021-06-24 | 2021-08-13 | 南京瑞志重工科技有限公司 | High-performance single-side double-impeller air-flotation high-speed direct-drive turbine compressor and working method |
| CN113417869A (en) * | 2021-05-28 | 2021-09-21 | 海拓宾未来工业集团有限公司 | Air suspension type low-pressure pure oil-free centrifugal compressor |
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| CN113738661A (en) * | 2021-09-27 | 2021-12-03 | 安徽润安思变能源技术有限公司 | Gas suspension centrifugal compressor and gas supply system thereof |
| CN114645859A (en) * | 2022-05-02 | 2022-06-21 | 烟台东德实业有限公司 | Bilateral two-stage high-speed centrifugal air compressor and expander integrated system |
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| CN112761971A (en) * | 2021-01-28 | 2021-05-07 | 湖南麓鹏动力科技有限公司 | Two-stage air foil bearing supporting high-speed centrifugal air compressor |
| CN112780583A (en) * | 2021-02-04 | 2021-05-11 | 北京稳力科技有限公司 | Fuel cell stack and two-stage centrifugal compressor |
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| EP4112941A4 (en) * | 2021-04-02 | 2024-04-24 | Yantai Dongde Ind Co., Ltd | HIGH SPEED CENTRIFUGAL COMPRESSOR |
| WO2022205599A1 (en) * | 2021-04-02 | 2022-10-06 | 烟台东德实业有限公司 | High-speed centrifugal compressor |
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| CN113123983A (en) * | 2021-04-07 | 2021-07-16 | 西安交通大学 | Two-stage high-speed centrifugal air compressor with double cooling systems for fuel cell |
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| CN113250981A (en) * | 2021-06-24 | 2021-08-13 | 南京瑞志重工科技有限公司 | High-performance single-side double-impeller air-flotation high-speed direct-drive turbine compressor and working method |
| CN113738661A (en) * | 2021-09-27 | 2021-12-03 | 安徽润安思变能源技术有限公司 | Gas suspension centrifugal compressor and gas supply system thereof |
| CN114645859A (en) * | 2022-05-02 | 2022-06-21 | 烟台东德实业有限公司 | Bilateral two-stage high-speed centrifugal air compressor and expander integrated system |
| CN115370593A (en) * | 2022-09-30 | 2022-11-22 | 富源空气悬浮系统(潍坊)有限公司 | Air suspension centrifugal blower for fuel cell |
| CN115628907A (en) * | 2022-12-07 | 2023-01-20 | 江苏科华动力科技有限公司 | System and method for detecting flow of cooling gas circuit of two-stage gas suspension centrifugal air compressor bearing |
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| CN116838637A (en) * | 2023-07-12 | 2023-10-03 | 山东华东风机有限公司 | Magnetic suspension air compressor based on built-in water course's magnetic bearing seat |
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