CN208871909U - The air supply system and refrigeration system of compressor gas bearing - Google Patents
The air supply system and refrigeration system of compressor gas bearing Download PDFInfo
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- CN208871909U CN208871909U CN201821689320.2U CN201821689320U CN208871909U CN 208871909 U CN208871909 U CN 208871909U CN 201821689320 U CN201821689320 U CN 201821689320U CN 208871909 U CN208871909 U CN 208871909U
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Abstract
The utility model relates to the air supply systems and refrigeration system of a kind of compressor gas bearing.Wherein, the air supply system of compressor gas bearing includes: the first compressor, and the gas bearing is set in the inner；And second compressor, it is used for gas bearing described in the gaseous coolant forced feed where first compressor in refrigeration cycle path.The utility model is not in the case where the gas pressure where the first compressor in refrigeration cycle path reaches gas pressure needed for gas bearing, the gaseous coolant where the first compressor in refrigeration cycle path is pressurizeed by the second compressor, gas pressure needed for making it meet gas bearing work, gas continuous, that pressure is stable can be provided, for gas bearing conducive to the continuous-stable work for guaranteeing gas bearing.
Description
Technical field
The utility model relates to field of refrigeration more particularly to a kind of air supply systems and system of compressor gas bearing
Cooling system.
Background technique
Refrigeration centrifugal compressor is normally used in various commercial buildings, and the centrifugal compressor that freezes at present mainly uses
Oil-lubricated bearing also starts to have risen electromagnetic bearing recent years.Additional lubricating oil is needed to supply system using oil-lubricated bearing
System increases system complexity；Furthermore lubricating oil can enter in refrigerant system during the operation of the compressor, need lubricating oil
Oil return system；To prevent the impurity contained in lubricating oil from entering in bearing, it is also necessary to lubrication oil filtration system；In addition, lubrication
Oil needs periodic maintenance, replacement, causes lubricating oil system complicated, difficult in maintenance.Using the centrifugal compressor of electromagnetic bearing, bearing
Control is complicated, and system impact resistance is poor, additionally needs additional abnormal power-down safeguard measure.
In recent years, porous gas bearing also start be applied to centrifugal compressor in, gas bearing using gas force to turn
Axis is supported.The compressor of using gas bearing compared with the compressor for using oil-lubricated bearing, without oil piping system and
Lubricating oil maintenance；Compared with using the compressor of electromagnetic bearing, system is protected without complicated control system and abnormal power-down.
Due to needing external gas supply, the air-breathing and exhaust of the compressor after can use unit starting when gas bearing work
The pressure difference at position is gas bearing gas supply, but before unit starting, unit does not have pressure difference for gas bearing gas supply.
Utility model content
One of purpose of the utility model is to propose air supply system and the refrigeration system of a kind of compressor gas bearing
System is at least used to solve the problems, such as no enough pressure differences for gas bearing gas supply.
Some embodiments of the utility model provides a kind of air supply system of compressor gas bearing comprising: the
One compressor, the gas bearing are set in the inner；And second compressor, it is used to follow refrigeration where first compressor
Gas bearing described in gaseous coolant forced feed in endless path.
Optionally, second compressor is configured to the first compressor institute before first compressor start
The gas bearing described in the gaseous coolant forced feed in refrigeration cycle path.
Optionally, second compressor is configured in the rigid starting state of first compressor and/or unstable work
Make under state, by gas bearing described in the gaseous coolant forced feed where first compressor in refrigeration cycle path.
Optionally, the air supply system of compressor gas bearing includes condenser, is located at where first compressor
Refrigeration cycle path in；Second compressor is used for gas axis described in the gaseous coolant forced feed in the condenser
It holds.
Optionally, the air supply system of compressor gas bearing includes: the first pipeline, first end and first compression
Refrigeration cycle path gas connection where machine, second end and the gas bearing gas connection；It is set on first pipeline
There is the first regulating valve, first regulating valve is used to control the on-off and/or flow of first pipeline；And second pipeline,
Refrigeration cycle path gas connection where its first end and first compressor, second end and the gas bearing gas
Connection；Second compressor is set to second pipeline.
Optionally, the air supply system of compressor gas bearing includes air accumulator, the second end of second pipeline and/or
The second end of first pipeline passes through the air accumulator and the gas bearing gas connection.
Optionally, the air accumulator is equipped with pressure sensor and/or temperature sensor.
Optionally, the air supply system of compressor gas bearing includes third pipeline, the first end of the third pipeline with
The air accumulator connection, the second end of the third pipeline are connected to refrigeration cycle path where first compressor, are used for
Liquid refrigerants in the air accumulator is oriented to the refrigeration cycle path where first compressor；The third pipeline is equipped with
Second regulating valve, for controlling the on-off and/or flow of the third pipeline.
Optionally, the first end of the third pipeline is connected to via the bottom of the air accumulator with the air accumulator.
Optionally, the first end of the third pipeline is higher than the second end of the third pipeline.
Optionally, first pipeline is equipped with the first check valve, and/or, second pipeline is equipped with second one-way valve.
Optionally, the air supply system of compressor gas bearing include the 4th pipeline, the second end of first pipeline and
The second end of second pipeline is set on the 4th pipeline by the 4th pipeline and the gas bearing gas connection
There is third regulating valve, the third regulating valve is used to control the on-off and/or flow of the 4th pipeline.
Optionally, first compressor includes centrifugal compressor.
Optionally, second compressor includes screw compressor, rotor compressor or piston compressor.
Optionally, the volume flow of first compressor is greater than the volume flow of second compressor.
Optionally, the condenser includes flooded type condenser.
Some embodiments of the utility model provides a kind of refrigeration system comprising above-mentioned compressor gas bearing
Air supply system.
Based on the above-mentioned technical proposal, the utility model at least has the advantages that
In some embodiments, the air supply system of compressor gas bearing includes a first compressor and a second compressor,
Gas bearing is set in the first compressor, and the second compressor is used for the gaseous state where the first compressor in refrigeration cycle path is cold
Matchmaker's forced feed gas bearing；Gas bearing institute is not reached in the gas pressure where the first compressor in refrigeration cycle path
In the case where needing gas pressure, the gaseous coolant where the first compressor in refrigeration cycle path is added by the second compressor
Pressure, gas pressure needed for making it meet gas bearing work can provide gas continuous, that pressure is stable for gas bearing,
Conducive to the continuous-stable work for guaranteeing gas bearing.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings:
Fig. 1 is the schematic diagram of the air supply system for the compressor gas bearing that some embodiments of the utility model provide；
Fig. 2 is the schematic diagram for the first compressor that some embodiments of the utility model provide.
Numbering in the drawing:
The first compressor of 1-；11- bearing；111- axial bearing；112- composite bearing；12- casing；121- air inlet；13-
Rotor；14- motor stator；15- one stage impeller；16- sencond stage impeller；17- thrust button；18- level-one diffuser；19 level-one snails
Shell；110- bearing block；
2- condenser；
The first pipeline of 3-；The first regulating valve of 31-；The first check valve of 32-；
The second pipeline of 4-；The second compressor of 41-；43- second one-way valve；
5- air accumulator；
6- third pipeline；The second regulating valve of 61-；
The 4th pipeline of 7-；71- third regulating valve.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, the technical solution in embodiment is carried out it is clear, complete
Ground description.Obviously, described embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.
Based on the embodiments of the present invention, institute obtained by those of ordinary skill in the art without making creative efforts
There are other embodiments, fall within the protection scope of the utility model.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this is practical
The limitation of novel protected range.
As shown in Figure 1, the air supply system of the compressor gas bearing provided for some embodiments comprising the first compression
Machine 1, above-mentioned gas bearing 11 are set in the first compressor 1.The gaseous state in refrigeration cycle path where first compressor 1 is cold
Matchmaker can be supplied to gas bearing 11, to meet the operating condition of gas bearing 11.
After the air pressure needed for meeting gas bearing, the rotor of compressor can leave gas bearing, become suspension
State.Compressor electric motor rotating operation.The supply gas pressure of gas bearing is the precondition that compressor works normally enough.
In some embodiments, the air supply system of compressor gas bearing includes the second compressor 41, the second compressor
41 are used for the gaseous coolant forced feed gas bearing 11 in 1 place refrigeration cycle path of the first compressor.
Gas pressure needed for not reaching gas bearing 11 in the gas pressure in 1 place refrigeration cycle path of the first compressor
In the case where power, the gaseous coolant in first compressor, 1 place refrigeration cycle path is pressurizeed by the second compressor 41, makes it
Meet gas bearing 11 to work required gas pressure, solves in unit without enough pressure differences to be what gas bearing 11 supplied
Problem.
It is pressurizeed by the second compressor 41 to the gaseous coolant in 1 place refrigeration cycle path of the first compressor, Neng Gouwei
Gas bearing 11 provides gas continuous, that pressure is stable, conducive to the continuous-stable work for guaranteeing gas bearing 11；And feed to gas
The gaseous coolant of bearing 11 is purer, is not easy to adulterate liquid refrigerants, conducive to the functional reliability for guaranteeing gas bearing 11.
Gas is supplied to the gaseous coolant pressurization in 1 place refrigeration cycle path of the first compressor by the second compressor 41
Body bearing 11, the process is without liquid medium, no setting is required throttling set, gas-liquid separation device etc., and structure is simple, easy to operate.
In some embodiments, the second compressor 41 is configured to 1 institute of the first compressor before the first compressor 1 starts
Gaseous coolant forced feed gas bearing 11 in refrigeration cycle path.
Before the starting of first compressor 1, the pressure of the gaseous coolant in 1 place refrigeration cycle path of the first compressor is small, nothing
Operating pressure needed for method reaches gas bearing 11, by the second compressor 41 by 1 place refrigeration cycle path of the first compressor
In gaseous coolant forced feed gas bearing 11, before being able to solve unit starting, in unit without enough pressure differences be gas
The problem of body bearing 11 supplies.
In some embodiments, the second compressor 41 is configured under the rigid starting state of the first compressor 1, by the first pressure
Gaseous coolant forced feed gas bearing 11 in 1 place refrigeration cycle path of contracting machine.
Under the rigid starting state of first compressor 1, the pressure of the gaseous coolant in 1 place refrigeration cycle path of the first compressor
It is gradually increased, but still without operating pressure needed for reaching gas bearing 11, by the second compressor 41 by 1 institute of the first compressor
Gaseous coolant forced feed gas bearing 11 in refrigeration cycle path, is able to solve in unit and is without enough pressure differences
The problem of gas bearing 11 supplies.
In some embodiments, the second compressor 41 is configured under the unstable working condition of the first compressor 1, by
Gaseous coolant forced feed gas bearing 11 in one compressor, 1 place refrigeration cycle path.
Under the unstable working condition of first compressor 1, gaseous coolant in 1 place refrigeration cycle path of the first compressor
There may be unstable situations for pressure, can have the case where operating pressure needed for being unable to satisfy gas bearing 11, pass through second
Compressor 41 can be gas by the gaseous coolant forced feed gas bearing 11 in 1 place refrigeration cycle path of the first compressor
Body bearing 11 provides gas lasting, that pressure is stable.
In some embodiments, the air supply system of compressor gas bearing includes condenser 2, and condenser 2 is located at first
In refrigeration cycle path where compressor 1；Second compressor 41 is used for the gaseous coolant forced feed gas in condenser 2
Bearing 11.
Certainly, the second compressor 41 is not limited to the gaseous coolant forced feed gas bearing 11 in condenser 2.First pressure
The gaseous coolant contained in the equipment such as evaporator, throttling set and the pipeline in refrigeration cycle path where contracting machine 1
By 41 forced feed gas bearing 11 of the second compressor.
Optionally, the second compressor 41 can also be by the gaseous coolant in the pipeline between the first compressor 1 and condenser 2
Forced feed gas bearing 11.
Optionally, the second compressor 41 can also be by the evaporation in the refrigeration cycle path for being located at 1 place of the first compressor
Gaseous coolant forced feed gas bearing 11 in device.
In some embodiments, the air supply system of compressor gas bearing includes the first pipeline 3, and the of the first pipeline 3
Refrigeration cycle path gas connection where one end and the first compressor 1, the second end and 11 gas of gas bearing of the first pipeline 3
Connection；First pipeline 3 is equipped with the first regulating valve 31, and the first regulating valve 31 is used to control the on-off and/or stream of the first pipeline 3
Amount.
First pipeline 3 can be directly by the gaseous coolant supply gas in the refrigeration cycle path where the first compressor 1
Bearing 11.First regulating valve 31 is used to control the flow of the first pipeline 3, so that the gas pressure in the first pipeline 3 meets gas
Pressure needed for bearing 11.
In some embodiments, the air supply system of compressor gas bearing further includes the second pipeline 4, the second pipeline 4
Refrigeration cycle path gas connection where first end and the first compressor 1, the second end and 11 gas of gas bearing of the second pipeline 4
Body connection；Second compressor 41 is set to the second pipeline 4.
In some embodiments, the first pipeline 3 is in parallel with the second pipeline 4, the refrigeration cycle road where the first compressor 1
It can only be gas by the first pipeline 3 in the case where gas pressure needed for gaseous coolant pressure in diameter meets gas bearing 11
Body bearing 11 supplies.Gaseous coolant pressure in the refrigeration cycle path where the first compressor 1 is not able to satisfy gas bearing
In the case where gas pressure needed for 11, it can will be freezed where first compressor 1 by the second compressor 41 on the second pipeline 4
Gaseous coolant forced feed gas bearing 11 in circulating path.
In some embodiments, the air supply system of compressor gas bearing further includes air accumulator 5, and the of the second pipeline 4
Two ends pass through air accumulator 5 and 11 gas connection of gas bearing.Second pipeline 4 will be in 1 place refrigeration cycle path of the first compressor
Gaseous coolant draw, and by the second compressor 41 pressurize after, lead to air accumulator 5, the gaseous coolant in air accumulator 5 feeds to gas
Body bearing 11 provides pressure stable gas conducive to for gas bearing 11.
In some embodiments, the air supply system of compressor gas bearing further includes air accumulator 5, and the of the first pipeline 3
Two ends pass through air accumulator 5 and 11 gas connection of gas bearing.First pipeline 3 will be in 1 place refrigeration cycle path of the first compressor
Gaseous coolant extraction lead to air accumulator 5, the gaseous coolant in air accumulator 5 feeds to gas bearing 11, be conducive to detection air accumulator 5 in
Air pressure adjust the air pressure in air accumulator 5 according to the actual situation, to provide pressure stable gas to gas bearing 11.
In some embodiments, air accumulator 5 is equipped with pressure sensor, and pressure sensor is used to detect the gas in air accumulator 5
Body pressure.When the pressure needed for the atmospheric pressure in air accumulator 5 does not reach gas bearing 11, the second compressor 41 can be passed through
By gas pressurized, pressure needed for making the air pressure in air accumulator 5 meet gas bearing 11.
In some embodiments, air accumulator 5 is equipped with temperature sensor, and temperature sensor is used to detect the gas in air accumulator 5
Temperature.
In some embodiments, the air supply system of compressor gas bearing further includes third pipeline 6, third pipeline 6
First end is connected to air accumulator 5, and the second end of third pipeline 6 is connected to 1 place refrigeration cycle path of the first compressor, and being used for will
Liquid refrigerants in air accumulator 5 is oriented to the refrigeration cycle path where the first compressor 1, to carry out refrigerant recovering.Third pipeline 6
Equipped with the second regulating valve 61, the second regulating valve 61 is used to control the on-off and/or flow of third pipeline 6.
Air accumulator 5 is used to receive the 1 place refrigeration cycle road of the first compressor that the first pipeline 3 and/or the second pipeline 4 introduce
Gaseous coolant in diameter, the gaseous coolant in air accumulator 5 may have the phenomenon that liquefaction, can will be stored up by third pipeline 6
Liquid refrigerants in gas tank 5 is led back in the refrigeration cycle path at 1 place of the first compressor, to recycle refrigerant.
In some embodiments, the first end of third pipeline 6 is connected to via the bottom of air accumulator 5 with air accumulator 5, is conducive to benefit
The liquid coolant in air accumulator 5 is led back to gravity in the refrigeration cycle path at 1 place of the first compressor.
In some embodiments, the first end of third pipeline 6 is higher than the second end of third pipeline 6, and being conducive to will using gravity
Liquid coolant in air accumulator 5 is led back in the refrigeration cycle path at 1 place of the first compressor.
In some embodiments, the first pipeline 3 is equipped with the first check valve 32, follows conducive to the refrigeration where the first compressor 1
Gaseous coolant in endless path flows to gas bearing 11, prevents the gaseous coolant at gas bearing 11 from flowing to 1 institute of the first compressor
Refrigeration cycle path.
In some embodiments, the second pipeline 4 is equipped with second one-way valve 42, follows conducive to the refrigeration where the first compressor 1
Gaseous coolant in endless path flows to gas bearing 11, prevents the gaseous coolant at gas bearing 11 from flowing to 1 institute of the first compressor
Refrigeration cycle path.
In some embodiments, the air supply system of compressor gas bearing further includes the 4th pipeline 7, the first pipeline 3
Second end and the second end of the second pipeline 4 pass through the 4th pipeline 7 and 11 gas connection of gas bearing, the 4th pipeline 7 are equipped with
Third regulating valve 71, third regulating valve 71 are used to control the on-off and/or flow of the 4th pipeline 7.
In the case where the pressure needed for the air pressure in the first pipeline 3 and/or the second pipeline 4 reaches gas bearing 11, open
Third regulating valve 71 is opened, is supplied by the 4th pipeline 7 to gas bearing 11.And the 4th pipeline 7 is controlled by third regulating valve 71
Interior gas flow meets the requirements the pressure that gas bearing 11 is fed to by the 4th pipeline 7 always.
In some embodiments, the first compressor 1 includes centrifugal compressor.
In some embodiments, the second compressor 41 includes that screw compressor, rotor compressor or piston compressor etc. hold
The product lesser compressor of flow.
In some embodiments, the volume flow of the first compressor 1 is greater than the volume flow of the second compressor 41.
In some embodiments, condenser 2 includes flooded type condenser.The gaseous coolant of first compressor 1 leads to condensation
Device 2, the upper layer of condenser 2 are gaseous coolant, and the lower layer of condenser 2 is liquid refrigerants.
Some embodiments provide a kind of operating methods of the air supply system of above-mentioned compressor gas bearing, first
Before compressor 1 is run, and/or under the rigid starting state of the first compressor 1, and/or in the unstable working condition of the first compressor 1
Under, it is by the second compressor 41 that the gaseous state in the refrigeration cycle path where being equipped with the first compressor 1 of gas bearing 11 is cold
Gas bearing 11 is conveyed to after matchmaker's pressurization.
It in some embodiments, will be where the first compressor 1 by the second compressor 41 before the operation of the first compressor 1
Gas bearing 11 is conveyed to after gaseous coolant pressurization in refrigeration cycle path；Gaseous coolant pressure after pressurization reaches gas
When pressure needed for bearing 11, the first compressor 1 is opened.
After the operation of first compressor 1, when the pressure rise of the gaseous coolant in 1 place refrigeration cycle path of the first compressor
When to pressure needed for gas bearing 11, the second compressor 41 is closed, the height in 1 place refrigeration cycle path of the first compressor is utilized
Gaseous coolant is pressed to supply to gas bearing 11.
In some embodiments, air accumulator 5 and third pipeline 6 are set in the air supply system of compressor gas bearing；The
The first end of three pipelines 6 is connected to air accumulator 5, the refrigeration cycle path where the second end of third pipeline 6 and the first compressor 1
Connection；The second end of second pipeline 4 passes through air accumulator 5 and 11 gas connection of gas bearing.
Before the operation of first compressor 1, drain into the liquid refrigerants of air accumulator 5 where first compressor 1 by third pipeline 6
Refrigeration cycle path in.
It will be passed through after the gaseous coolant pressurization in the refrigeration cycle path where first compressor 1 by the second compressor 41
Second pipeline 4 is conveyed to air accumulator 5, the gaseous coolant supply gas bearing 11 in air accumulator 5.
When the pressure needed for the gaseous coolant pressure in air accumulator 5 reaches gas bearing 11, the first compressor 1 is opened.
The operating method of a specific embodiment of the air supply system of compressor gas bearing is set forth below:
In this specific embodiment, the exhaust end of the first compressor 11 is connected to condenser 2, and the upper layer of condenser 2 is gas
State refrigerant, the lower layer of condenser 2 are liquid refrigerants.
The upper layer of condenser 2 is connected to by the first pipeline 3 with air accumulator 5.First pipeline 3 is equipped with the first regulating valve 31.
The upper layer of condenser 2 is also connected to by second pipeline 4 in parallel with the first pipeline 3 with air accumulator 5.Second pipeline 4
Equipped with the second compressor 41.
The bottom of air accumulator 5 is connected to by third pipeline 6 with the lower layer of condenser 2.Third pipeline 6 is equipped with the second regulating valve
61。
The top of air accumulator 5 passes through the 4th pipeline 7 and 11 gas connection of gas bearing.4th pipeline 7 is adjusted equipped with third
Valve 71.
Before the operation of first compressor 1, the gaseous coolant at 2 top of condenser and the gaseous coolant pressure phase in air accumulator 5
Together, the second regulating valve 61 is opened, the liquid refrigerants in air accumulator 5 is expelled in condenser 2 using gravity；For a period of time
Afterwards, the second compressor 41 is opened, the gaseous coolant at 2 top of condenser is compressed in air accumulator 5 by the second compressor 41, air accumulator
5 pressure rises, after a period of time, closing the second regulating valve 61 after the liquid refrigerants emptying in air accumulator 5.
When the pressure needed for the pressure of air accumulator 5 rises to gas bearing 11, third regulating valve 71 is opened, guarantees gas
The gas supply of bearing 11 is met the requirements.
Start the first compressor 1, the gaseous coolant in condenser 2 is constantly compressed to air accumulator by the second compressor 41 at this time
5,5 supply gas bearing of air accumulator, 11 gas.
After the first 1 steady operation of compressor, the pressure in condenser 2 is gradually risen, when condenser 2 pressure rise extremely
When gas pressure needed for can satisfy gas bearing 11, the first regulating valve 31 is opened, closes the second compressor 41.
Gas bearing 11 is supplied and is worked using the high-pressure gaseous refrigerant in condenser 2 at this time, is adjusted by adjusting first
Valve 31 controls the pressure in air accumulator 5 in reasonable section, guarantees the stability that gas bearing 11 supplies.
Some embodiments provide a kind of refrigeration systems comprising the air supply system of above-mentioned compressor gas bearing.
Refrigeration system includes the first compressor 1 and the first compressor 1 in the air supply system of compressor gas bearing
Place refrigeration cycle path.
First compressor, 1 place refrigeration cycle path includes the first compressor 1, further include condenser 2 and evaporator and
Throttling set etc..
The cyclic process in 1 place refrigeration cycle path of the first compressor are as follows: the first compressor 1- condenser 2- throttling set-
The-the first compressor of evaporator 1.
As shown in Fig. 2, a specific embodiment of the first compressor 1 is set forth below:
First compressor 1 includes gas bearing 11, casing 12, rotor 13, motor stator 14, one stage impeller 15, two
Grade impeller 16, thrust button 17, level-one diffuser 18 and level-one spiral case 19 etc..
Rotor 13 and motor stator 14 are set in casing 12.The internal diameter that 12 inside of casing cooperates with motor stator 14 is set
There is helical groove structure.When first compressor 1 works, the refrigerant being passed through in helicla flute after throttling, when refrigerant flows in helicla flute,
Can evaporator strip walk the heat on motor surface, to realize that motor is cooling, reduce temperature when motor work.
One stage impeller 15 and sencond stage impeller 16 are arranged in the both ends of rotor 13, back-to-back direction arrangement.By this
Structure arrangement, can reduce the axial force of rotor 13.
Thrust button 17 is arranged in one stage impeller 15 along the downstream of airflow direction.
Gas bearing 11 includes axial bearing 111 and composite bearing 112.Axial bearing 111 and composite shaft 112 are held and are arranged in
The two sides of thrust button 17.
Axial bearing 111 carries out axially position by positioning ring, guarantees the gap of axial bearing 111 and thrust button 17.
Composite bearing 112 is the axial composite bearing with radial direction, and composite bearing 112 can either bear axial load, and energy
Enough bear radial load.
Level-one diffuser 18 is used as diffusion runner, while inner ring contains comb structure, as sealing element, for preventing level-one
The high-pressure gaseous refrigerant that impeller 15 flows out leaks in motor cavity.
It include volute structure on level-one spiral case 19, for collecting the compressed gaseous coolant of one stage impeller 14 and flowing to second level
The import of impeller 16.
It is had on casing 12, level-one diffuser 18 and bearing block 110 cold for providing gaseous state to gas bearing 11
The stomata of matchmaker, the air inlet 121 being connected to air supply system are set to casing 12, and the gaseous coolant that air supply system provides passes through air inlet
121 and casing 12, level-one diffuser 18 and bearing block 110 on the stomata that is arranged flow in gas bearing 11, and form gas
Film, supporting motor rotor 13, to complete bearing working process.
It just needs to supply to gas bearing 11 before the first compressor 1 is started to work, stops turning completely in the first compressor 1
It can stop supplying after dynamic.
In the description of the present invention, it should be understood that being limited using the words such as " first ", " second ", " third "
Determine components, it is only for convenient for distinguishing to above-mentioned parts, there is no Stated otherwise such as, there is no special for above-mentioned word
Meaning, therefore should not be understood as the limitation to scope of protection of the utility model.
Finally it should be noted that: above embodiments are only to illustrate the technical solution of the utility model rather than limit it
System；Although the utility model has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should
Understand: specific implementation of the utility model can still be modified or is equally replaced to some technical characteristics
It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model
In range.
Claims (17)
1. a kind of air supply system of compressor gas bearing characterized by comprising
First compressor (1), the gas bearing (11) set in the inner；And
Second compressor (41) is used for the gaseous coolant pressurization where first compressor (1) in refrigeration cycle path
Supply the gas bearing (11).
2. the air supply system of compressor gas bearing as described in claim 1, which is characterized in that second compressor
(41) being configured to before first compressor (1) starts will be in the refrigeration cycle path of the first compressor (1) place
Gas bearing described in gaseous coolant forced feed (11).
3. the air supply system of compressor gas bearing as described in claim 1, which is characterized in that second compressor
(41) it is configured under the rigid starting state of first compressor (1) and/or unstable working condition, described first is compressed
Gas bearing (11) described in gaseous coolant forced feed where machine (1) in refrigeration cycle path.
4. the air supply system of compressor gas bearing as described in claim 1, which is characterized in that including condenser (2),
In the refrigeration cycle path where first compressor (1)；Second compressor (41) is used for the condenser
(2) gas bearing (11) described in the gaseous coolant forced feed in.
5. the air supply system of compressor gas bearing as described in claim 1 characterized by comprising
Refrigeration cycle path gas connection where first pipeline (3), first end and first compressor (1), second
End and the gas bearing (11) gas connection；First pipeline (3) is equipped with the first regulating valve (31), and described first is adjusted
Valve (31) is used to control the on-off and/or flow of first pipeline (3)；And
Refrigeration cycle path gas connection where second pipeline (4), first end and first compressor (1), second
End and the gas bearing (11) gas connection；Second compressor (41) is set to second pipeline (4).
6. the air supply system of compressor gas bearing as claimed in claim 5, which is characterized in that including air accumulator (5), institute
The second end of the second end and/or first pipeline (3) of stating the second pipeline (4) passes through the air accumulator (5) and the gas
Bearing (11) gas connection.
7. the air supply system of compressor gas bearing as claimed in claim 6, which is characterized in that the air accumulator (5) sets
There are pressure sensor and/or temperature sensor.
8. the air supply system of compressor gas bearing as claimed in claim 6, which is characterized in that including third pipeline (6),
The first end of the third pipeline (6) is connected to the air accumulator (5), the second end and described first of the third pipeline (6)
Refrigeration cycle path connection where compressor (1), for compressing the liquid refrigerants guiding described first in the air accumulator (5)
Refrigeration cycle path where machine (1)；The third pipeline (6) is equipped with the second regulating valve (61), for controlling the third pipe
The on-off and/or flow on road (6).
9. the air supply system of compressor gas bearing as claimed in claim 8, which is characterized in that the third pipeline (6)
First end be connected to via the bottom of the air accumulator (5) with the air accumulator (5).
10. the air supply system of compressor gas bearing as claimed in claim 8, which is characterized in that the third pipeline (6)
First end be higher than the third pipeline (6) second end.
11. the air supply system of compressor gas bearing as claimed in claim 5, which is characterized in that first pipeline (3)
Equipped with the first check valve (32), and/or, second pipeline (4) is equipped with second one-way valve (42).
12. the air supply system of compressor gas bearing as claimed in claim 5, which is characterized in that including the 4th pipeline
(7), the second end of first pipeline (3) and the second end of second pipeline (4) pass through the 4th pipeline (7) and institute
Gas bearing (11) gas connection is stated, the 4th pipeline (7) is equipped with third regulating valve (71), the third regulating valve (71)
For controlling the on-off and/or flow of the 4th pipeline (7).
13. the air supply system of compressor gas bearing as described in claim 1, which is characterized in that first compressor
It (1) include centrifugal compressor.
14. the air supply system of compressor gas bearing as described in claim 1, which is characterized in that second compressor
It (41) include screw compressor, rotor compressor or piston compressor.
15. the air supply system of compressor gas bearing as described in claim 1, which is characterized in that first compressor
(1) volume flow is greater than the volume flow of second compressor (41).
16. the air supply system of compressor gas bearing as claimed in claim 4, which is characterized in that condenser (2) packet
Include flooded type condenser.
17. a kind of refrigeration system, which is characterized in that including such as claim 1~16 described in any item compressors gas axis
The air supply system held.
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| CN201821689320.2U CN208871909U (en) | 2018-10-18 | 2018-10-18 | The air supply system and refrigeration system of compressor gas bearing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111076453A (en) * | 2018-10-18 | 2020-04-28 | 珠海格力电器股份有限公司 | Gas bearing gas supply system for compressor, operation method and refrigeration system |
| CN111578566A (en) * | 2020-05-20 | 2020-08-25 | 无锡职业技术学院 | Control system for gas bearing type centrifugal compressor |
| CN111608929A (en) * | 2020-05-20 | 2020-09-01 | 无锡职业技术学院 | Centrifugal compressor and refrigerating system of gas bearing |
| CN112112833A (en) * | 2019-06-21 | 2020-12-22 | 丹佛斯公司 | Partial hollow shaft for heating, ventilating and air conditioning |
| WO2022062414A1 (en) * | 2020-09-22 | 2022-03-31 | 珠海格力电器股份有限公司 | Compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111076453A (en) * | 2018-10-18 | 2020-04-28 | 珠海格力电器股份有限公司 | Gas bearing gas supply system for compressor, operation method and refrigeration system |
| CN112112833A (en) * | 2019-06-21 | 2020-12-22 | 丹佛斯公司 | Partial hollow shaft for heating, ventilating and air conditioning |
| CN111578566A (en) * | 2020-05-20 | 2020-08-25 | 无锡职业技术学院 | Control system for gas bearing type centrifugal compressor |
| CN111608929A (en) * | 2020-05-20 | 2020-09-01 | 无锡职业技术学院 | Centrifugal compressor and refrigerating system of gas bearing |
| CN111608929B (en) * | 2020-05-20 | 2022-04-01 | 无锡职业技术学院 | Refrigerating system with gas bearing type centrifugal compressor |
| CN111578566B (en) * | 2020-05-20 | 2022-04-05 | 无锡职业技术学院 | Control system for gas bearing type centrifugal compressor |
| WO2022062414A1 (en) * | 2020-09-22 | 2022-03-31 | 珠海格力电器股份有限公司 | Compressor |
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