CN204213044U - There is the internal drive compressor of powered compressor machine rotor - Google Patents

There is the internal drive compressor of powered compressor machine rotor Download PDF

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Publication number
CN204213044U
CN204213044U CN201420569831.6U CN201420569831U CN204213044U CN 204213044 U CN204213044 U CN 204213044U CN 201420569831 U CN201420569831 U CN 201420569831U CN 204213044 U CN204213044 U CN 204213044U
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CN
China
Prior art keywords
compressor
machine rotor
compressor machine
powered
rotor
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Expired - Fee Related
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CN201420569831.6U
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Chinese (zh)
Inventor
W·菲乐
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Solar Turbines Inc
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Solar Turbines Inc
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Classifications

    • 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
    • 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
    • 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
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/062—Details of the 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
    • 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
    • F04D25/0686—Units comprising pumps and their driving means the pump being electrically driven specially adapted for submerged use
    • 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
    • F04D29/051—Axial thrust balancing
    • F04D29/0516—Axial thrust balancing balancing pistons
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/5826—Cooling at least part of the working fluid in a heat exchanger

Abstract

The utility model relates to a kind of internal drive compressor with powered compressor machine rotor.Described internal drive compressor comprises: compressor housing, and it comprises inhalation port and discharge port; Inner drive, it comprises rotor and stator, and described rotor and described stator are positioned at described compressor housing, and described stator is inwardly arranged relative to described rotor radial; Powered compressor machine rotor, it comprises the annular solid extended around central axis, and wherein said rotor is fixed on described powered compressor machine rotor and the power being configured to described powered compressor machine rotor is applied in response to described stator rotates around described central axis.The utility model improves rotor dynamics, robustness and performance, and by making the coaxial and colocated of described driver and described rotor provide the compression set with reduction axial length.

Description

There is the internal drive compressor of powered compressor machine rotor
Technical field
The utility model totally belongs to pump and gas compressor, more particularly, aims to provide a kind of centrifugal gas compressor driven by the motor being positioned at impeller or rotary pump component substantially.
Background technique
Integration motor compressor exists in a variety of manners but still there is following puzzlement: motor and compressor are segregating unit, needs coupler and relative long axle.The wind turbine etc. that some relevant examples comprise integrated water power generator and have hub generator.For pressurization device (such as, compressor), magnetic bearing is use magnetic suspension with the bearing of load-supporting, thus avoids the Sealing of the rotary component using the isolated air of sealing.Magnetic bearing can not support mechanically moving by physical contact.Such as, its can make running shaft unsettled with provide there is extremely low friction and mechanical wearing and tearing rotation.Active magnetic bearings uses electromagnetic suspension, and can comprise electromagnet assembly, is configured to the sensor (such as, gap sensor) that drives the power amplifier of electromagnet, controller and have related electronic device.Power amplifier drives the electromagnet being positioned at axle opposite side.Sensor provides feedback to control the position of rotor in gap.Electromagnet is driven controller bias current is to depart from its desired locations during at rotor.
The 6th, 393, No. 208 U. S. Patents authorizing Nosenchuck on May 21st, 2002 show a kind of compressor with integrated impeller and motor.Specifically, the patent of Nosenchuck aims to provide a kind of Axial Flow Compressor had with lower component: impeller, and it has conductive hoop or other conductive member that the rotate path along impeller settles; Impeller drive, it comprises can magnetic-permeable material ring along what extend close to the circular arc of the rotate path of impeller current-carrying part.Impeller drive serves as motor stator, and it has two and is wound with conductive coil with the core segment of induced magnetic field in ring and two and the isolated conduction pole parts of described core segment.Rotating force is applied to the conductive hoop of impeller by the Ac introducing coil, causes its transport compressor operating fluid.
The utility model is intended to the problem overcoming known problem and/or inventor's discovery.
Summary of the invention
The utility model aims to provide a kind of internal drive compressor with powered compressor machine rotor, to improve the dynamic characteristic of rotor, robustness and performance.
An aspect, the utility model discloses a kind of industrial gas compressor, comprising: compressor housing, and it comprises inhalation port and discharge port; Inner drive, it comprises rotor and stator, and rotor and stator are positioned at compressor housing, and stator is inwardly arranged relative to rotor radial; With powered compressor machine rotor, it comprises the annular solid extended around central axis, and its rotor is fixed on powered compressor machine rotor and the power being configured to powered compressor machine rotor is applied in response to stator rotates around central axis.
On the other hand, the invention also discloses a kind of internal drive compressor with powered compressor machine rotor, described internal drive compressor comprises: compressor housing; Inner drive, it comprises rotor and stator, and rotor and stator are positioned at compressor housing, and stator is inwardly arranged relative to rotor radial; With powered compressor machine rotor, it comprise around central axis extend annular solid, impeller bore surface and be configured to around central axis rotate a series of impeller blades, impeller bore surface surrounds stator, its rotor is fixed to impeller bore surface and is positioned at impeller bore surface, and described rotor configuration is power that powered compressor machine rotor is applied in response to stator and rotates around central axis.
Further, described internal drive compressor also comprises: external impetus supply interface, it comprises power conduit, described power conduit be configured to receive from external power supply electric power and described electric power is provided in described internal drive compressor; Axis, it is fixed to described compressor housing and is configured to support described inner drive and described powered compressor machine rotor, and described axis comprises at least one inner passage, and at least one inner passage described comprises entry port; Compressor inlet hole, it is configured to receiver gases and enters described internal drive compressor; And compressor air-discharging hole, it is configured to discharge the described gas from described internal drive compressor; Wherein, described inner drive comprises power supply device further, and it extends through at least one inner passage of described axis and described entry port from described inner drive.
Further again, described internal drive compressor comprises bearing of compressor system further, described bearing of compressor system comprises one or more magnetic bearing, and described magnetic bearing is fixed to described axis, and is configured to support described electric compressor rotor rotatably around described central axis.
Wherein, described compressor housing comprises equalizing piston cavity; Described powered compressor machine rotor comprises equalizing piston further, and described equalizing piston comprises compensating piston gasket and piston head, and described equalizing piston is arranged in described equalizing piston cavity.
Preferably, described inner drive is permanent-magnet electric motor, and described rotor comprises permanent magnet, and described stator comprises motor stator coils.
Further, described powered compressor machine rotor is further configured to pressurized gas, described internal drive compressor comprises inner drive cooling system further, described inner drive cooling system is configured to the part receiving described gas, by the exchange heat from least one in described inner drive and described powered compressor machine rotor to the described part of described gas, and discharge the described part of the described gas from described inner drive cooling system subsequently.
Wherein, described inner drive cooling system comprises: venting key, and it is configured to the described gas of discharge unit from described powered compressor machine rotor downstream; Cooling pipe, it is connected in described venting key; Manifold, it is connected to described cooling pipe and is configured to the described part of described gas be distributed at least one described in described inner drive and described powered compressor machine rotor; Reflux line and air sucking mouth, it is configured to the described part of the described gas discharging described powered compressor machine rotor upstream.
Further, described compressor housing comprises equalizing piston cavity; Wherein, described powered compressor machine rotor comprises the equalizing piston being positioned at described powered compressor machine rotor downstream end further, and described equalizing piston is arranged in described equalizing piston cavity; Wherein, described reflux line is used for described equalizing piston cavity and described air sucking mouth pneumatic communication.
Wherein, described inner drive and described powered compressor machine rotor are included in final stage part, and described power compressor rotor configuration is final stage power turbine, described internal drive compressor comprises further: first stage part, it comprises first stage inner drive and first stage power turbine, and described first stage part is positioned at the upstream of described final stage part; Membrane portions, it is connected to part of described first stage and described final stage part, and described membrane portions is configured to guide and enters described final stage part as axial flow of fluid from the radial fluid of described first stage partial discharge; Wherein, described first stage power turbine rotates from described final stage power turbine and departs from and be configured to independent rotation.
Or, described inner drive and described powered compressor machine rotor are included in final stage part, described power compressor rotor configuration is as final stage power turbine, described internal drive compressor comprises further: first stage part, it comprises first stage power turbine, and described first stage power turbine is supported by first stage axis and driven by first stage inner drive; Membrane portions, it is connected to the downstream of part of described first stage and is positioned at downstream partly of described first stage, and described membrane portions is configured to guide becomes the first axial flow of fluid from the first radial fluid of described first stage partial discharge; Interstage part, it is connected to described membrane portions and is positioned at the downstream of described membrane portions, described interstage part comprises interstage power turbine, and described interstage power turbine is supported by interstage axis and driven by interstage inner drive; And the membrane portions that pipeline connects, it is connected to described final stage part and is positioned at the downstream of described final stage part, the membrane portions that described pipeline connects is configured to guide becomes the second axial flow of fluid from the second radial fluid of described interstage partial discharge, and the membrane portions that described pipeline connects comprises the passage extending the membrane portions that described pipeline connects from described interstage axis.
Again on the one hand, the invention also discloses a kind of power compressor rotor assembly for internal drive compressor, described power compressor rotor assembly comprises powered compressor machine rotor, described powered compressor machine rotor comprises the annular solid around central axis, and described annular solid has the vane hole surface around central axis; Described powered compressor machine rotor comprises further: a series of impeller blade, and it extends around central axis from annular solid; Axis, it is configured to supporting motive force compressor drum, and axis comprises at least one inner passage, and described inner passage comprises entry port; Described powered compressor machine rotor also comprises inner drive, it comprises rotor and stator, described rotor and stator are positioned at powered compressor machine rotor, stator relative to central axis relative to rotor radial to inner position, its rotor is fixed to powered compressor machine rotor and is positioned at powered compressor machine rotor, and stator is fixed to axis.
Above-mentioned technical solution improves the dynamic characteristic of rotor, robustness and performance, and for driver with rotor is coaxial and colocated provides a kind of compression set with reduction axial length.
Accompanying drawing explanation
Fig. 1 is the perspective view that example internal drives compressor;
The cross sectional side view of the part of the internal drive compressor of Fig. 2 pictorial image 1, shows single-phase compression;
The cross sectional side view of the part of the internal drive compressor of Fig. 3 pictorial image 2, shows inner drive and the bearing of compressor system comprising active magnetic bearings;
Fig. 4 is the cross section view of the part of the internal drive compressor of Fig. 2, shows inner drive cooling system;
The cross section view of the part of Fig. 5 illustrative exemplary two benches internal drive compressor;
The cross section view of the part of Fig. 6 illustrative exemplary multistage internal drive compressor.
Embodiment
The utility model relates to a kind of compressor with integrated motor.Embodiment provides a kind of internal drive compressor be incorporated into by motor (such as, electric motor) in compressor self.Here, compressor drum is rotatably installed on the fixing axis of bearing of compressor system.Blade is driven by the electric motor rotor embedded in vane hole surface.In addition, electric motor is axially between radial bearing.
Fig. 1 is the perspective view that example internal drives compressor.Specifically, illustrated internal drive compressor 700 is embodied as the axial feed-in industrial centrifugal gas compressor with side direction tapping equipment.But this particular arrangement is only for illustrating object, and therefore illustrated internal drive compressor 700 can comprise any combination of single or multiple devices of radial direction, linear and radial feed-in and tapping equipment.Similarly, the utility model can be applicable to the pump and compressor etc. of other type.In Ben Tu and other figure, for object that is clear and that be easy to illustrate has been omitted or simplified some parts and surface.
For convenience of reference, internal drive compressor 700 generally includes central axis 95, and its critical piece rotates around central axis 95.Other parts all kinds of that central axis 95 can be internal drive compressor 700 have together or share.All radial direction, axis and the axial direction mentioned and measure all relate to central axis 95, unless otherwise specified, otherwise the less or larger radial distance of term such as " inside " and " outside " or " outwards " ordinary representation and central axis 95, wherein radial 96 can be along any direction perpendicular to central axis 95 and from central axis 95 to external radiation.
In addition, the utility model can relate to forward and backward directions.Usually, all " forward " and " backward " mentioned are all relevant relative to the flow direction of central axis 95 with pressurized gas.Specifically, the suction side 97(entrance of internal drive compressor 700), be called as front end or forward direction relative to central axis 95.Therefore, opposite end or discharge that end 98 and be called as rear end or backward, unless there are certain illustrated.
In profile, internal drive compressor 700 comprises compressor housing 710, external impetus supply interface 705 and communication interface 706.Here, for simplicity, communication interface 706 is illustrated as and supplies interface 705 with external impetus and combine; But communication interface 706 can be embodied as supplies interface 705 with external impetus and separates.
Usually, compressor housing 710 encapsulates and supports the inner member of internal drive compressor 700.In addition, drive compressor (needing dynamic seal (packing)) different from conventional axle, external impetus supply interface 705 and communication interface 706 can static sealing to compressor housing 710.
Other control gear of internal drive compressor 700 can be integrated together and/or telecontrol with internal drive compressor 700.In addition, the communication of internal drive compressor 700, feedback and control gear can dock separately as mentioned above.Another selection is, the communication of internal drive compressor 700, feedback and control gear dock by external impetus supply interface 705.
Compressor housing 710 comprises inhalation port 711 and discharge port 712.Inhalation port 711 engages with fluid supply apparatus (not shown), and is configured to fluid (such as, working gas, process gas, pump into fluid etc.) to be supplied to internal drive compressor 700.Herein, fluid is gas 15.Similarly, discharge port 712 engages with fluid discharging apparatus (not shown), and is configured to from internal drive compressor 700 exhausting air 15.Compressor housing 710 also can comprise supporting foot 713 or further feature to protect internal drive compressor 700 or to make internal drive compressor 700 physics land.
External impetus supply interface 705 can comprise power conduit and relevant power control unit, and described power control unit is configured to power to be provided to internal drive compressor 700 from outside feeding mechanism (not shown).Such as, external impetus supply interface 705 can comprise the conductivity cell annex relevant to power supply with routine.Another selection is that external power supply can based on hydraulic pressure or pneumatic.
Fig. 2 is the cross sectional side view of the internal drive compressor 700 of Fig. 1, illustrates single-phase compression.As mentioned above, being the clear object with being easy to illustrate, ignoring, delete and/or simplifying some parts and surface.As shown in the figure, gas 15 axially enters inner compressor 700, by its single-phase compression, and collects subsequently and discharges.
Internal drive compressor 700 inside comprises axis 715, compressor inlet hole 720, compressor air-discharging hole 725, powered compressor machine rotor 730, inner drive 740 and bearing of compressor system 750.Inner drive 740 and bearing of compressor system 750 are configured to drive and supporting motive force compressor drum 730 around central axis 95 respectively.Powered compressor machine rotor 730 is across in the cavity in compressor housing 710.In addition, inner drive 740 and bearing of compressor system 750 are encapsulated in compressor housing 710.According to an embodiment, internal drive compressor 700 can comprise power compressor rotor assembly, and described power compressor rotor assembly comprises powered compressor machine rotor 730 and is coupled to the part of the inner drive 740 on axis 715.In addition, power compressor rotor assembly can comprise the part of bearing of compressor system 750.
Powered compressor machine rotor 730 forms single compression stage (as mentioned below, can use additional phase).Internal drive compressor 700 can comprise the diffuser 760 being positioned at powered compressor machine rotor 730 downstream further.Therefore, the air 15 compressed through powered compressor machine rotor 730 can then be spread by diffuser 760.
Compressor inlet hole 720 comprises the upstream open in compressor housing 710, and described opening is configured to be incorporated into by gas 15 in the compressor flow path in compressor housing 710.Compressor flow path can part with the additional structure in compressor housing 710(or compressor housing 710) for boundary, and part with powered compressor machine rotor 730 for boundary.Herein, compressor inlet hole 720 is configured to axial entrance; But as mentioned below, in other embodiments, compressor inlet hole 720 can be configured to radial direction or side inlet.
Compressor inlet hole 720 roughly can comprise inhalation port 711 and any flow assignment between inhalation port 711 downstream and powered compressor machine rotor 730 upstream/moulding feature.Such as, these features can comprise pillar, blade, pipeline and in-line filter etc.And for example, compressor inlet hole 720 can comprise nose shell 721.Nose shell 721 is the aerostructures being positioned at powered compressor machine rotor 730 upstream extremity, is configured to guide and regulate the air-flow entering into compression flow path.Nose shell 721 also can be configured to seal internal components and prevents gas from entering, particularly at powered compressor machine rotor 730 by cantilever support and compressor inlet hole 720 is configured to the position of axial entrance.As shown in the figure, nose shell 721 can be fixed on powered compressor machine rotor 730.Another selection is, the structure (such as, axis 715) that nose shell 721 can be fixed to powered compressor machine rotor 730 inside goes up or is fixed in the part of compressor housing 710.
Compressor air-discharging hole 725 comprises the downstream opening being configured to gas to discharge from compressor housing 710 in compressor housing 710.Such as, downstream opening can be defined by the interface between compressor housing 710 and discharge port 712 (with reference to Fig. 1).In addition, compressor air-discharging hole 725 roughly can comprise discharge port 712 and any upstream flow distribution/moulding feature.These upstream flow distribution/moulding feature can comprise pillar, blade and the pipeline etc. that are positioned at discharge port 712 upstream and powered compressor machine rotor 730 or diffuser 760 downstream.According to an embodiment, compressor air-discharging hole 725 can comprise and is multiplely positioned at the exit vane 726 of powered compressor machine rotor 730 downstream around central axis 95 genesis analysis.Described multiple exit vane 726 can be configured to the whirlpool in the gas 15 reducing to be caused by powered compressor machine rotor 730.
Herein, compressor air-discharging hole 725 is configured to radial direction or side exit.Therefore, compressor air-discharging hole 725 also can comprise the trap 727 being located thereon trip end.Described trap 727 can be incorporated in compressor housing 710, maybe can be connected to compressor housing 710 and be called discrete unit.Trap 727 forms a part for compressor flow path, receive Radial Flow gas 15 and along linear direction exhausting air 15.In addition, multiple exit vane 726 can be positioned at the upstream extremity of trap 727 and be distributed in the upstream extremity of trap 727.According to an embodiment, trap 727 can be embodied as discharge spiral case.Discharge spiral case is a bending funnel, increasing close to area during discharge port 712.
According to an embodiment, powered compressor machine rotor 730 can be power turbine, has in inner drive 740 part being embedded into power turbine or being otherwise fixed on power turbine.Specifically, power turbine can comprise in inner drive 740 rotor 741 embedding or be otherwise fixed on power turbine.Therefore, between power turbine and the rotor 741 of inner drive 740, there is not live axle etc.
Power turbine can comprise annular solid 731, and described annular solid 731 has impeller bore surface 732 and a series of impeller blade 733 around impeller axis.Annular solid 731 comprises opening around impeller axis or impeller bore.Central axis 95 can be shared with impeller axis or have when mounted.The supplementary features of power turbine can be incorporated in annular solid or otherwise and extend from annular solid.In certain embodiments, the hole of annular solid can close in one or more positions of centrally axis 95.
Impeller bore surface 732 is internal surfaces of power turbine, surrounds central axis 95.In addition, impeller bore surface 732 can comprise one or more groove, breach, slit or other depart from rule (such as, cylindrical) surface structure, one or more parts can be fixed on powered compressor machine rotor 730 or by one or more feature like this and add on powered compressor machine rotor 730.Such as, impeller bore surface 732 can comprise the structure (such as, otch, cavity, groove etc.) departing from rules rotating surface, and such impeller bore surface 732 is configured to meshing rotors 741.Similarly, the part of rotor 741 can be embedded in the structure departing from rules rotating surface.
When inner drive 740 is electric motor rotors, in the other parts of rotor 741 engageable (or be fixed to and be positioned at) impeller bore surface 732 or annular solid 731.Because rotor 741 is directly fixed on annular solid 731, the electromotive force that therefore rotor 741 is configured to directly produce in response to the stator 742 of inner drive 740 makes its impeller blade 733 rotate around central axis 95.In this case, the stator 742 of inner drive 740 is radially-inwardly located relative to rotor 741, and can embed or otherwise be fixed on axis 715.
In addition, a series of impeller blade 733 can comprise the flowing transmission surface extended from annular solid 731.A series of impeller blade 733 can be configured to along compression flow path compression and/or redirects gas 15.Such as, herein, a series of impeller blade 733 to be configured to when gas being redirected to radial flow compressional axis to gas flow.
In addition, as shown in the figure, power turbine can be lid or closed impeller.Therefore, a series of impeller blade 733 can be the part of a series of pipeline impeller.A series of pipeline blade comprises the guard shield 734 of a series of impeller blades 733 around bottom.Therefore, compression flow path a part by with the surface of the annular solid 731 between pipeline blade and each impeller blade 733 for boundary.Guard shield 734 can be integrated into single unit with a series of impeller blade 733 together with annular solid 731, inwardly extends towards impeller bore surface 732.
In this embodiment, powered compressor machine rotor 730 also can comprise the one or more Sealings between compressor housing 710 and power turbine.Described one or more Sealing be configured to stop gas 15 bypass pipeline blade compressor flow path or from other path flow in addition.Such as, powered compressor machine rotor 730 can comprise guard shield Sealing 735.Guard shield Sealing 735 can be positioned on powered compressor machine rotor 730 close on the excircle of its upstream extremity.Guard shield Sealing 735 can comprise dry-type encapsulated, such as labyrinth seal.Guard shield Sealing 735 can be passed through machining and is formed in guard shield 734 or is otherwise fixed on guard shield 734.Another selection is that one or more Sealing can be passed through machining and is formed in compressor housing 710 or is otherwise fixed on compressor housing 710.
In this embodiment, powered compressor machine rotor 730 also can comprise equalizing piston 736 further.Equalizing piston 736 can be positioned at the downstream (that is, axially towards discharge end 98) of powered compressor machine rotor 730.Equalizing piston 736 can comprise compensating piston gasket 737 and piston head 738.Piston head 738 can have the useful area roughly defined by its diameter and the annular region between the diameter on the impeller bore surface 732 of power turbine downstream.Equalizing piston 736 is placed in the equalizing piston cavity 717 of compressor housing 710.
Equalizing piston cavity 717 end is connected to low pressure source (such as, power turbine upstream, surrounding environment etc.).Specifically, because power turbine causes pressure to increase, therefore there is a pressure difference, make to produce net thrust along updrift side.By making piston head 738 bear low pressure source, produce the pressure difference contrary with net thrust direction.Such as, equalizing piston cavity 717 by a series of opening 722(such as, the part by nose shell 721 and axis 715) by termination, described opening 722 forms flow path between area of low pressure (inlet pressure) and equalizing piston cavity.And for example, equalizing piston cavity 717 can be connected to low pressure source via cooling system (hereafter will discuss).
The size (such as, selecting the diameter on piston head 738 and impeller bore surface 732) of piston head 738 can be set to provide basic isostasy or balance vertically.Another selection is, the large I of piston head 738 is set to reduce the load in bearing of compressor system 750 vertically.
According to an embodiment, internal drive compressor 700 supports inner drive 740 and bearing of compressor system 750 by axis 715.In addition, powered compressor machine rotor 730 is rotatably installed on axis 715, and such powered compressor machine rotor 730 can rotate around central axis 95.Axis 715 is now supported by compressor housing 710.Such as, herein, axis 715 to be non-rotatably fixed on compressor housing 710 and to suspend in midair from the end socket 718 being positioned at its rear end.Another selection is, axis 715 can obtain the support (such as, comprise radial feed and tapping equipment at internal drive compressor 700, and the situation of two end sockets) of its rear and front end.And for example, as shown in the figure, axis 715 can comprise cylindrical outer diameter.
Usually, axis 715 comprises the component of the one or more positions being fixed to compressor housing 710.Such as, axis 715 can comprise coaxial with central axis 95 and be fixed to the front end of compressor housing 710 and/or the component of rear end.And for example, axis 715 can be solid, hollow, symmetrical and/or asymmetric.Therefore, axis 715 can have cylindrical shape, and is positioned at on position like conventional driveshaft position class.But, with conventional driveshaft unlike, penetrate respective compressor housing and with high rotational speed operation, driver axis 715 can wholely reside in compressor housing 710, or is at least roughly sealed in compressor housing 710.
According to an embodiment, axis 715 can be mesopore or comprises hollow space.Specifically, axis 715 can comprise one or more passage, can internally drive compressor 700 provide or provide power, control, cooling, isostasy etc. in internal drive compressor 700 by these passages.Such as, axis 715 can have generally tubular structure.In addition, axis 715 can comprise the entry port 719 being positioned at end socket 718 place.Similarly, external impetus supply interface 705 can static sealing at entry port 719 place, and power and signal cable path are by axis 715.And for example, axis 715 can be made counterpressure can arrive equalizing piston cavity 717 by termination.
Fig. 3 is the cross sectional side view of a part for the internal drive compressor of Fig. 2, illustrates inner drive and bearing of compressor system.Specifically, inner drive 740 is shown as and combines with powered compressor machine rotor 730, and bearing of compressor system 750 be shown as through extend illustrate radial and axial both bearings.For clarity sake, when using or employ multiple element, available discrete component representative.In addition, a part (Fig. 2) for nose shell 721 and compressor housing 710 can be removed.
Inner drive 740 comprises rotor 741, stator 742 and driver anchoring piece 743.In addition, inner drive 740 is configured to antistructure motor.Specifically, as shown in the figure, stator 742 relative to rotor 741 radially-inwardly (different from the radially outer conventional axle drive machines of stator).Therefore, the rotor 741 of inner drive 740 radially outward from stator 742.In addition, rotor 741 can be incorporated in powered compressor machine rotor 730, and stator 742 can be integrated together or be incorporated in axis 715 with axis 715.
According to an embodiment, inner drive 740 can be embodied as permanent magnetism (PM) electric motor.Specifically, rotor 741 can comprise permanent magnet, and stator 742 can comprise relative to the radially inner motor stator coils of rotor 741.Such as, permanent magnet can embed in impeller bore surface 732 or otherwise be fixed on impeller bore surface 732, and motor stator coils can be fixed on axis 715.
According to another embodiment, inner drive 740 can be embodied as induction or asynchronous motor.Specifically, rotor 741 can be relative to the radially outer squirrel cage rotor of the staor winding of its stator 742.Such as, squirrel cage rotor can embed in impeller bore surface 732 or otherwise be fixed on impeller bore surface 732, and staor winding can be fixed on axis 715.
Inner drive 740 can comprise power supply device 744 and driver control system 745 further.Power supply device 744 comprises power conduit, such as high voltage direct current cable or polyphase ac power cable.Power supply device 744 is coupled to external impetus supply interface 705(Fig. 1), on the power unit of stator 742 and any related hardware or controller.
Similarly, driver control system 745 comprises the communication chain between external impetus supply interface 705 and inner drive 740.Described communication chain can comprise general communication chain, such as wired, industrial bus communication chain.In addition, driver control system 745 can comprise feedback transducer, on-board controller and/or to the feedback of inner drive 740 with control other relevant hardware.
Both power supply device 744 and driver control system 745 can be arranged in axis 715 and path by axis 715.Specifically, the cable of power supply device 744 and driver control system 745 connects or line connects part and can be coupling in external impetus with internal drive compressor 700 and supply interface 705 place, and by means of end socket 718(pressure vessel wall) in entry port 719(static sealing penetration device) enter compressor housing 710.For simplicity, the line of power supply device 744 and driver control system 745 connects part, and to be incorporated into single line as shown in the figure intrafascicular, but also can separate (such as) to avoid crosstalk.
Driver anchoring piece 743 is the interfaces be fixed to by stator on compressor housing 710.Specifically, reaction force is provided to inner drive 740 and rotates to impel powered compressor machine rotor 730 by driver anchoring piece 743.Driver anchoring piece 743 can be discreet component, or can be integrated together or cross over other discreet component with other discreet component and distribute.Such as, driver anchoring piece 743 can be integrated together with axis 715, and wherein stator 742 is non-rotatable is fixed on axis 715, and axis 715 is non-rotatable is fixed on compressor housing 710.As shown in the figure, the motor stator coils of stator 742 is fixed on axis 715 herein, and axis 715 is embodied as the non-rotatable main shaft or the central minor axis that are mounted to compressor housing 710 end socket 718 place.Another selection is, axis 715 can be formed by compressor housing 710 or be a part for compressor housing 710 on the contrary.
Bearing of compressor system 750 can comprise the radial bearing be configured to around central axis 95 supporting motive force compressor drum 730 rotatably.Specifically, radial bearing can comprise the suction side radial bearing 751 being axially positioned at inner drive 740 front, and is axially positioned at the discharge end radial bearing 752 at inner drive 740 rear.Another selection is, the distalmost end that suction side radial bearing 751 and discharge end radial bearing 752 can be axially positioned on powered compressor machine rotor 730 is sentenced and just provided maximum stability.In addition, the part of suction side radial bearing 751 and discharge end radial bearing 752 can be mounted on powered compressor machine rotor 730, and other parts can be mounted on axis 715.Such as, suction side radial bearing 751 and discharge end radial bearing 752 are installed by interference fit.In one embodiment, radial bearing is that heat is installed.
Bearing of compressor system 750 can comprise thrust bearing 753(cod further), described thrust bearing 753 be configured to support and/or balanced power compressor drum 730 to resist axial loading.Specifically, thrust bearing 753 during rotation can provide bearing along one or two axial direction to powered compressor machine rotor 730.Such as, powered compressor machine rotor 730 can comprise the thrust ring 739 extended radially inwardly from powered compressor machine rotor 730 further, and thrust bearing 753 it can provide axial force to thrust ring 739 during rotating in permission.
Thrust bearing 753 can independent support powered compressor machine rotor 730, or combines (being assisted by it) supporting motive force compressor drum 730 with equalizing piston 736.In addition, thrust bearing 753 can axially between suction side radial bearing 751 and discharge end radial bearing 752.
According to an embodiment, bearing of compressor system 750 can comprise conventional mechanical bearing.Specifically, bearing of compressor system 750 can be self-contained structure and directly supports radial and axial loading.Such as, mechanical bearing may be rolling element bearing, such as ball bearing or roller bearing.In addition, rolling element bearing can lubricate and seal.
According to another embodiment, bearing of compressor system 750 can comprise magnetic bearing, and wherein load is delivered by magnetic field.Specifically, powered compressor machine rotor 730 is arranged on axis 715 by means of two reverse radial active magnetic bearings (AMBs).Described AMB is configured to by powered compressor machine rotor 730 and/or thrust ring 739 by magnetic levitation space between, and operation has low-down friction and mechanical wearing and tearing.Such as, in an illustrated embodiment, suction side radial bearing 751, discharge end radial bearing 752 and thrust bearing 753 are AMB.It is upper or be positioned at the Magnetic bearing rotor of radially-inwardly part of annular solid 731 that powered compressor machine rotor 750 can comprise at least one radially-inwardly part being fixed to annular solid 731, and at least one Magnetic bearing rotor described is configured to power turbine to suspend around the magnetic bearing stator of radially-inwardly locating relative at least one Magnetic bearing rotor.
Similar with inner drive 740, reverse AMB can be configured with coil on axis 715, is configured with lamination sleeve pipe outside coil.Exist and there is the AMB(one pole bearing of permanent magnet), it can the effect of intensifier coil.In one embodiment, suction side radial bearing 751 and discharge end radial bearing 752 can comprise permanent magnet.Equally, in the described embodiment, thrust bearing 753 is positioned at inner drive 740 axial rearward direction and close to discharge end radial bearing 752.But thrust bearing 753 can be positioned at any axial positions on powered compressor machine rotor 730, comprise axial front and close to suction side radial bearing 751.In one embodiment, thrust bearing 753 can comprise permanent magnet.
Bearing of compressor system 750 can comprise bearing power feeding mechanism 755 and bearing control system 756 further.Bearing power feeding mechanism 755 comprises power conduit, and described power conduit is configured to supply operational power to the AMB of bearing of compressor system 750.Bearing power feeding mechanism 755 is coupled to external impetus supply interface 705(Fig. 1), on AMB and any related hardware or controller.
Similarly, bearing control system 756 comprises the communication chain between external impetus supply interface 705 and bearing of compressor system 750.Described communication chain can be general communication chain, and such as line connects, industrial bus communication chain.In addition, bearing control system 756 can comprise feedback transducer, on-board controller and/or to the feedback of bearing of compressor system 750 with control other relevant hardware.
Such as, bearing control system 756 can comprise one or more radial-direction position sensor 757 and axial position sensor 758.Radial-direction position sensor 757 can be configured to measures AMB gap or the radial position at suction side radial bearing 751 and discharge end radial bearing 752 place.In addition, each AMB all can have multiple radial-direction position sensor 757.
Similarly, axial position sensor 758 can be configured to the axial position measuring powered compressor machine rotor 730.Such as, one or more axial position sensor 758 can be positioned at the position close to thrust ring 739, and can measure the axial position of thrust ring 739 or the gap between the side of thrust ring 739 and each AMB of thrust bearing 753 respectively.
Both bearing power feeding mechanism 755 and bearing control system 756 can be arranged in axis 715 and path by axis 715.Specifically, the cable of bearing power feeding mechanism 755 and bearing control system 756 connects or line connects position and can be coupled at outside power supply interface 705 place with external impetus or controller, and by means of end socket 718(pressure vessel wall) in entry port 719(static sealing penetration device) enter compressor housing 710.Cable connects or line connects part and can extend to its interior section corresponding with bearing control system 756 from entry port 719 and the interior section corresponding with bearing control system 756 with it is connected.For simplicity, the line of bearing power feeding mechanism 755 and bearing control system 756 connects part and is illustrated as that to be incorporated into single line intrafascicular, but also can separately cabling (such as) to avoid crosstalk.
In addition, bearing of compressor system 750 can comprise the combination of magnetic bearing and mechanical bearing (such as, rolling element bearing, plane bearing, answer contact surface etc.).Specifically, bearing of compressor system 750 also can comprise auxiliary or replacement bearing.Such as, bearing of compressor system 750 can comprise magnetic bearing as main or operation bearing, and can comprise the auxiliary or replacement bearing that can operate in power loss situation further, and wherein auxiliary bearing can be mechanical bearing.And for example, auxiliary bearing (such as, rotatable member bearing) is under quiescent period, AMB transient condition or other power is unavailable or intermittent period (such as, test, maintenance etc.) provides support for powered compressor machine rotor 730.
Fig. 4 is the cross sectional side view of an internal drive compressor part of Fig. 2, illustrates inner drive cooling system.Herein, for the clear object with being easy to illustrate, ignore and simplify above-mentioned power and the controlling feature of inner drive 740 and bearing of compressor system 750.
According to an embodiment, internal drive compressor 700 can comprise inner drive cooling system 780 further.Usually, inner drive cooling system 780 comprises cooling circuit, described cooling circuit is configured to a part of receiving working fluid, and the heat exchange of ultromotivity impeller is in the described part of working fluid in the future, and part described in working fluid is gone out from power impeller drainage.Therefore, herein, inner drive cooling system 780 is configured to use himself pressurized gas cooled interior driver 740.
Such as, pressurized gas can be supplied in axis 715 by inner drive cooling system 780, makes pressurized gas be distributed to inner drive 740(heated compression gas) in, and discharge is through the pressurized gas of heating.In addition, inner drive cooling system 780 can make pressurized gas be distributed in bearing of compressor system 750 for cooling.In addition, the pressurized gas of inner drive cooling system 780 reusable edible internal drive compressor 700 is as its freezing mixture.
According to an embodiment, inner drive cooling system 780 can comprise venting key 781, cooling pipe 782, reflux line 784 and air sucking mouth 785.Venting key 781 can be the opening of the compressor flow path downstream being arranged in powered compressor machine rotor 730 or is connected to the compressor flow path downstream being positioned at powered compressor machine rotor 730, for the gas after compression provides passage.Such as, venting key 781 can be arranged in the part in compressor air-discharging hole 725, and such as trap 727(such as, piercing discharge spiral case).Venting key 781 can be orientated as and makes cooled gas at discharge pressure (Pd) or discharge under maximum pressure recovery.
Cooling pipe 782 can be any suitable pipeline or conduit, and described pipeline or conduit pneumatic communication in venting key 781, and are configured to guide cooled gas to flow to manifold 783.Cooling pipe 782 can enter axis 715 via entry port 719.Similarly, cooling pipe 782 can comprise one or more passage through compressor housing 710 or wherein other structure.
Usually, cooling pipe 782 is pressurized gas pipelines, is configured to direct pressurized cooled gas and flows to axis 715 from venting key 781.Such as, cooling pipe 782 can comprise standard Stainless Steel Tube and any relevant path hardware.Cooling pipe 782 sectional is incorporated in other passage crossing over additional part of cooling system (such as, parts discussed below) or its any combination distribution.
On manifold 783 pneumatic communication to cooling pipe 782 or be otherwise incorporated in cooling circuit.Usually, manifold 783 is pressurized gas pipelines, in the parts that described pressurized gas pipelines is configured to the pressurization cooled gas from cooling pipe 782 to be received, guide and is distributed to the internal drive compressor 700 that will cool or region (such as, inner drive 740, bearing of compressor system 750 and surrounding environment thereof).Such as, compression cooled gas is distributed in the suitable opening in axis 715 by the stator 742 of inner drive 740 and rotor/stator clearance 746, AMB etc. by manifold 783.
Similar with cooling pipe 782, manifold 783 can be embodied as discrete part, a series of passage by another parts or structure or its combination.Such as, the grid that can comprise at least partially in axis 715 of manifold 783.And for example, the passage that can comprise axis 715 at least partially of manifold 783 or cavity combinations or through port wherein, in its parts being configured to strategically cooled gas to be injected into the internal drive compressor 700 that will cool or region.
Except reflux line 784 and air sucking mouth 785 be configured to " to use " or through the gas backstreaming of heating except the upstream of compressor flow path and powered compressor machine rotor 730, reflux line 784 and air sucking mouth 785 and cooling pipe 782 and venting key 781 similar.Such as, air sucking mouth 785 can be located close to the suction side 97 of internal drive compressor 700, and reflux line 784 can be the pipe special of air sucking mouth 785.
In addition, reflux line 784 can be integrated together with equalizing piston 736 so that by the gas discharging through heating in equalizing piston cavity 717, and equalizing piston cavity 717 end is received the low pressure source at air sucking mouth 785 place by reflux line 784.Another selection is, as shown in Figure 4, reflux line 784 can comprise a series of pneumatic communication ending at upstream open through axis 715, so that the gas of heating can reflux, and equalizing piston cavity 717 can be connected to low pressure source via cooling system.
Inner drive cooling system 780 can comprise the preprocessed features for cooled gas further.Specifically, inner drive cooling system 780 can comprise pneumatic filter 786, flowmeter 787 and/or heat exchanger 788.In addition, preprocessed features can be interspersed between venting key 781 and the parts that will cool or region along cooling pipe 782 is pneumatic.Preprocessed features can be disposed in order as shown in the figure or with another.
According to an embodiment, flowmeter 787 can be pressure regulator valve or hole, its be configured to limit or measuring pressure a little more than the flow of the cooled gas of suction pressure.Further, heat exchanger 788 can comprise external cooling circuit, for further by near for the temperature of the cooled gas exhaust temperature lower than internal drive compressor 700.
In addition, can reach simply by stacking multiple single phase of connecting with heat exchanger 788 or two stage machine as restriction gas discharging temperature and the interstage cooler that increases thermodynamic efficiency means.
Fig. 5 is the cross sectional side view of exemplary pair of stage internal drive compressor.Specifically, illustrated pair of stage internal drive compressor 701 is embodied as the radial feed-in industrial centrifugal gas compressor with side direction tapping equipment.Herein, each power turbine representative once independent single-phase compression (hereafter will discuss) rotated.In alternative embodiments, multiple impeller can be fixed together with the single phase bearing arrangement that can not independently rotate.
As shown in the figure, gas 15 radial direction enters two stage internal drive compressor 701, carries out two stage compression, collects subsequently and discharge.As mentioned above, being the clear object with being easy to illustrate, ignoring and simplifying some parts and surface.Such as, the two benches device of two stage internal drive compressor 701 is shown as simplification bearing arrangement.
In this embodiment, internal drive compressor 710 comprises radial compressor inlet hole 620.Radial compressor inlet hole 620 is general toroidal pipeline, the gas 15 from inhalation port (not shown) radially received by described general toroidal pipeline, be redirected to the axial flow of fluid in annularly path, and guided in first stage entrance 621.In alternative embodiments, two benches internal drive compressor 701 can comprise the axial compressor inlet hole similar with Fig. 1, replaces radial compressor inlet hole 620.
Two benches internal drive compressor 701 comprises first stage part 601, final stage divides 603 and membrane portions 660.First stage part 601 is positioned at the upstream of final stage part 603.First stage part 601 and final stage part 603 are coupled via membrane portions 660.The radial fluid of discharging from first stage part 601 is guided into the axial flow of fluid in final stage part 603 by membrane portions 660.
Usually, first stage part 601 and final stage part 603 can comprise the same or similar feature of single phase embodiment with internal drive compressor 700 mentioned above.Specifically, the power turbine similar with internal drive compressor 700 mentioned above, inner drive and bearing of compressor system is included in first stage part 601 and final stage part 603 each.
In addition, first stage part 601 can comprise first stage axis 611, and final stage part 603 can comprise final stage axis 613.First stage axis 611 and final stage axis 613 can with single phase embodiment axis 715 similar, and to comprise and similar feature mentioned above.In two benches configuration, first stage axis 611 and final stage axis 613 can suspend in midair in each outer end, link together or independent support, and at inner common support.
In addition, first stage part 601 and final stage part 603 each all can comprise driver wire harness 644 and bearing wire harness 655.For simplicity, power supply device and driver control system are described as driver wire harness 644 here, and bearing power feeding mechanism and bearing control system are described as bearing wire harness 655 here, but, if the single phase of internal drive compressor 700 is described in embodiment, be all separable into its individual components in driver wire harness 644 and bearing wire harness 655 each.Similar with the single phase embodiment of internal drive compressor 700, each driver wire harness 644 and bearing wire harness 655 all can be arranged in the axis 611 of its correspondence and axis 613 and path through the axis 611 of its correspondence and axis 613.
According to an embodiment, two stage internal drive compressor 701 can comprise the independent power of per first stage and control pipeline.Specifically, first stage part 601 can have spcific power and control pipeline, its when laying from final stage part 603(and internal drive compressor 700 mentioned above) to be separated and different.Such as, in first stage part 601, driver wire harness 644 and bearing wire harness 655 enter first stage axis 611 by means of the entry port 617 in suction side 97 upper cover 616.On the contrary, in the end in stage partial 603, driver wire harness 644 and bearing wire harness 655 enter in final stage axis 613 by means of the entry port 619 in discharge end 98 upper cover 618.In alternative embodiments, pipe laying, at single-ended place, through a part, and is routed on another part.
Membrane portions 660 can comprise general characteristics, such as diffuser 661, swivel gear 662, barrier film spheroid 663 and multiple reflux blade 664.Diffuser 661 extends from the downstream of first stage power turbine 631.Swivel gear 662 extends to first stage entrance 621 from diffuser 661.The radial direction of first stage part 601 exports together with the axial entrance pneumatic communication of final stage part 603 together with other device with swivel gear 662 by diffuser 661, makes compressor flow path between the two complete.Barrier film flow path can surround central axis 95.
Multiple reflux blade 664 is distributed in compressor flow path around central axis 95.Specifically, multiple reflux blade 664 can be radially distributed in swivel gear 662 around central axis 95.Multiple reflux blade 664 can be configured to the whirlpool reduced before entering final stage part 603 in gas 15 together with other device.
The outer surface of internal surface and barrier film spheroid 663 that diffuser 661 and swivel gear 662 can be positioned at first stage power turbine 631 downstream by compressor housing is formed.Barrier film spheroid 663 can be supported by multiple reflux blade 664 at least partially.Such as, multiple reflux blade 664 can comprise endoporus or passage, and fastening piece (such as fixing bolt) can be attached on barrier film spheroid 663 through endoporus or passage.
According to an embodiment, two benches internal drive compressor 701 can be configured to each stage and independently rotates.Specifically, first stage power turbine 631 rotatably from final stage power turbine 633 decoupling zero, and is configured to independent rotation (such as, with different angular velocity).Such as, first stage power turbine 631 can be supported by first stage bearing arrangement 651 and be driven by first stage inner drive 641.Similarly, final stage power turbine 633 can be supported by final stage bearing arrangement 653 and be driven by final stage inner drive 643.In this embodiment, every one-phase drives and bearing arrangement all can physics decoupling zero each other, and has independently power and control gear.Such as, every one-phase all can have its independently 5 axle AMB controllers (4 radial directions, 1 axis) and respective variable frequency drive unit (VFD) thereof.
According to an embodiment, first stage part 601 and final stage part 603 also can comprise the separate internal driver cooling system similar with above-mentioned single phase embodiment.Specifically, first stage part 601 can comprise and is configured to pass tap and receives from the first stage cooling system of the gas 15 of membrane portions 660, and final stage part 603 can comprise and is configured to pass tap and receives final stage cooling system from the gas 15 in compressor air-discharging hole 625.Another selection is, two stage internal drive compressor 701 can comprise shared cooling system.
Fig. 6 is the cross sectional side view of exemplary multistage internal drive compressor.Specifically, illustrated multistage internal drive compressor 702 is also embodied as the radial feed-in centrifugal gas compressor with side direction tapping equipment.Herein, multistage internal drive compressor 702 comprises three power turbines 630 providing three stage compression, and wherein each power turbine all independently rotates.In alternative embodiments, multiple impeller can be fixed together with the single phase bearing arrangement that can not independently rotate.
Multistage internal drive compressor 702 can comprise the basic element of character described in Fig. 5, additional one or more interstage device.Specifically, multistage internal drive compressor 702 comprises first stage part 601 as above, final stage part 603 and membrane portions 660.In addition, multistage internal drive compressor 702 comprises the membrane portions 670 that interstage part 602 is connected with pipeline.
Interstage part 602 is roughly similar to above-mentioned first stage part 601.Specifically, interstage part 602 comprises interstage power turbine 632, interstage inner drive 642, interstage bearing of compressor system 652 and interstage axis 612, and all parts are all similar with the analog structure of above-mentioned first stage part 601.Interstage part 602 also can comprise inner drive wire harness 645, internal bearings wire harness 656 and inner cooling system (not shown), similar with above-mentioned driver wire harness 644, bearing wire harness 655 and inner drive cooling system 780 respectively.
The membrane portions 670 that pipeline connects is similar with membrane portions 660; But the membrane portions 670 that pipeline connects also comprises one or more passage, and it extends from interstage axis 612, stretch out outside the membrane portions 670 of pipeline connection.Specifically, the membrane portions 670 that pipeline connects can comprise general characteristics, such as diffuser 671, revolving rotor 672, barrier film spheroid 673 and multiple reflux blade 674.But the membrane portions 670 that pipeline connects can comprise one or more passage further, and it is configured to, through inner drive wire harness 645, internal bearings wire harness 656 and/or inner cooling system parts, stretch out from middle stage partial 602.
Such as, the membrane portions 670 that pipeline connects also can comprise rotor-interface 675, barrier film spheroid path 676, reflux blade path 677 and barrier film outlet 678.Rotor-interface 675 can comprise the cavity and opening that are connected with the interior section of interstage part 602 in barrier film spheroid 673.Barrier film spheroid path 676 is through the passage that barrier film spheroid 673 arrives reflux blade path 677.Reflux blade path 677 is through the passage that at least one reflux blade 674 arrives barrier film outlet 678.
As shown in the figure, multistage internal drive compressor 702 starts from suction side 97 place of radial compressor inlet hole 620.Continue to downstream, radial compressor inlet hole 620 is coupled to first stage part 601, first stage part 601 is then coupled to membrane portions 660, membrane portions 660 is then coupled to interstage part 602, interstage part 602 is then coupled to the membrane portions 670 that pipeline connects, the membrane portions 670 that pipeline connects then is coupled to final stage part 603, and final stage part 603 is then coupled to and terminating compressor air-discharging hole 625.
Therefore, multistage internal drive compressor 702 can be roughly similar with above-mentioned two stage embodiment with interstage part 602, and interstage part 602 is coupled to membrane portions 670 that pipeline connects and is arranged between membrane portions 660 and final stage part 603.In addition, multistage internal drive compressor 702 extends to comprise additional phase by adding the additional interstage part 602 that is coupled to the membrane portions 670 that additional pipeline connects.
As mentioned above, for the driver wire harness 644 of first stage part 601, bearing wire harness 655 and/or inner drive cooling system 780(Fig. 4) conduit can leave first stage axis 611 via the entry port 617 on suction side 97.Similarly, the conduit for the driver wire harness 644 of final stage part 603, bearing wire harness 655 and/or inner drive cooling system 780 can leave final stage axis 613 via the entry port 619 in discharge end 98.For each interstage part 602, the conduit for inner drive wire harness 645, internal bearings wire harness 656 and/or inner cooling system (not shown) all can export 678 via barrier film and leave interstage axis 612.
According to an embodiment, multistage internal drive compressor 702 can comprise additional phase.Specifically, although multistage internal drive compressor 702 is embodied as and has three phases, additional interstage part 602 can be added herein.Such as, multistage internal drive compressor 702 can comprise multiple coupled to each other and provide the interstage part 602 in additional compression stage.
As mentioned above, multistage internal drive compressor 702 can be configured to each stage and independently rotates.Specifically, the rotatable decoupling zero of one or more stage, to rotate independently of one another.Similarly, the driving of every one-phase and bearing arrangement can physics decoupling zeros each other, and have independently power and control gear.Another selection is that one or more power turbine 630 can rotate joint each other, and it can at the uniform velocity rotate or relevant rotation like this.Therefore, multistage internal drive compressor 702 can comprise separate phases and association phase.
Industrial applicibility
The utility model is generally applicable to the power supply device be incorporated in industrial compressors, specifically industrial gas compressor.But described embodiment is not limited to and is combined with the gas compressor of particular type (such as, centrifugal compressor, axial compressor etc.).Gas compressor is used for process gas being moved to another location from a position, such as centrifugal gas compressor.Centrifugal gas compressor is generally used for oil and natural gas industry, for removing treatment plant or ducted rock gas.Centrifugal gas compressor is driven by gas turbine engine, electric motor or other power source any.
According to model, industrial gas compressor can have 1-12 stage to process various entrance stream and pressure ratio.Industrial gas compressor can produce the ratio more than 5:1, and the compressor that the multistage is installed in series can produce the pressure ratio close to 40:1.In addition, industrial gas compressor can adapt to the API617 of solid and reliable operation.Modularization industrial gas compressor design simplify again stage by stage industrial gas compressor with the field condition of satisfied change.If be embodied as industrial gas compressor, internal drive compressor 700 can have, such as 1300 cubic meters per minute, at least 50 cubic meters per minute, at 50-1300 cubic meters per minute, gas flow between 250-500 cubic meters per minute and 300-700 cubic meters per minute.Similarly, if be embodied as industrial gas compressor, internal drive compressor 700 can have, and such as 30,000 kPa, at least 10,000 kPa, at 10,000-30,000 kPa, 11,000-21,000 kPa and 20,000-26, the pressure nominal value between 000 kPa.Similarly, if be embodied as industrial gas compressor, internal drive compressor 700 can have, such as 275 kJ/kg, at least 100 kJ/kg, maximum calorific value between 100-275 kJ/kg, 100-210 kJ/kg and 200-260 kJ/kg.Similarly, if be embodied as industrial gas compressor, internal drive compressor 700 can have, and such as 24,000 rpm, at least 7,000 rpm, at 7,000-24,000 rpm, 10,000-12,500 rpm and 12,000-17, the maximum speed between 000 rpm.
Internal drive compressor 700 is formed with compressor flow path, and gas 15 is received by compressor inlet hole 720 herein, is compressed and advance by powered compressor machine rotor 730, and is discharged by compressor air-discharging hole 725.In operation, gas 15 enters the compressor inlet hole 720 at suction side 97 place, compresses in one or more stage, and in the diffusion of compressor air-discharging hole 725 place, collection and discharge.Power (such as, electric power) is provided to internal drive compressor 700 via external impetus supply interface 705 from external source (such as, electrical network, local generator, variable frequency drive unit VFD etc.).In addition, the communication of control signal, feedback signal also can be passed through external power supply interface 705 or other communication chain.
In inside, power is supplied to inner drive 740, the interaction of the rotor 741 that the stator 742 be then mounted on axis 715 by (such as) is embedded in powered compressor machine rotor 730 with (such as) makes powered compressor machine rotor 730 rotate.In addition, electric power can be supplied to the position that bearing of compressor system 750(uses AMB).Both inner drive 740 and bearing of compressor system 750 all can use its respective control system and wire harness (communication chain) to be controlled by Local or Remote.As mentioned above, one or more stage can independently rotate.Therefore, can according to the every one-phase of intrasystem flow parameter static adjust.In addition, can when detecting transient condition dynamic conditioning every one-phase, such as surge condition.
In some cases, the embodiment with the internal drive compressor of powered compressor machine rotor that the utility model discloses is applicable to the use of centrifugal gas compressor, operation, maintenance, repairing and improvement, and can be used for improving performance and efficiency, minimizing maintenance and repair and/or reducing costs.In addition, the embodiment of the control system that the utility model discloses is applicable to any stage in centrifugal gas compressor life-span, manufactures until life termination from design original shape and first time.Therefore, as a kind of preventive measure or even in response to an event, internal drive compressor can be combined with the transformation of existing centrifugal gas compressor or improvement.
More particularly, the internal drive compressor with powered compressor machine rotor is all favourable in the rotor dynamics improved, robustness and performance.The powered compressor machine rotor that the utility model comprises or power turbine are by making driver and rotor is coaxial and colocated significantly shortens the axial length of compressible drive device.Like this, some rotor DYNAMIC COMPLEX can be reduced or eliminated.The magnetic bearing that the utility model comprises can strengthen the control relevant to compressor drum dynamic characteristic and balance further.The magnetic bearing that the utility model comprises also (that is, inner drive is electronic situation) can provide larger efficiency and less discharge when realizing the synergistic benefits sharing power supply.
Further, owing to there is not the running shaft of pierce compressed engine housing, therefore external impetus supply interface can static sealing on compressor housing.This can use in the application apparatus with severe operating environments environment such as (such as, under water) pressurization, grinding/corrosion and cleaning ambient.This also can in the gas application device with severe corrosive gas componant (chemical activated gas, water, solid).
In addition, the optional feature relevant to axle connected device can be eliminated, and reduce unnecessary subtense angle and can reduce overall cost.Similarly, alleviate the design of dynamic seal (packing) by this innovation and safeguard challenge.In addition, internal drive compressor can take less area and " all comprise " designs all can be used for subsea use, and especially transmission shaft does not need oil condition.
Performance is improved by decoupling zero and the independent powered compressor machine rotor rotated.As mentioned above, each compression stage has the possibility of independent operation and control.When configuring for the multistage, due to the speed of the every one-phase of unrestricted choice, therefore new compressed configuration may be had.In addition, due to independent impeller speed can be regulated to overcome local surge condition, therefore, internal drive compressor can be combined with the Anti-surging controller being appropriate to operation improving scope.
Detailed description is above in fact only exemplary, is not intended restriction the utility model or application of the present utility model and use.Described embodiment is not limited to and is combined with the combination of the driver of particular type and drive machines or driver and drive machines.Such as, described driver can be electric motor, oil hydraulic motor, pneumatic motor or other compact type rotating machinery.And for example, drive machines can be gas compressor, pump, coolant compressor or other rotary actuation machine.Therefore, implement although the utility model object for convenience of description describes and is stated as in the centrifugal gas compressor driven at power motor, should understand that it can in the driver of other type various and drive machines, and implement in other system various and environment.In addition, the utility model is not by any theory constraint in any preceding sections.Should also be understood that diagram may be exaggerated size and figure illustrates, so that the referenced items better shown in diagram, unless there are clearly stating, otherwise should not be regarded as restriction.

Claims (10)

1. one kind has the internal drive compressor (700) of powered compressor machine rotor, it is characterized in that, comprising:
Compressor housing (710);
Inner drive (740), it comprises rotor (741) and stator (742), and described rotor (741) and described stator (742) are positioned at described compressor housing, and described stator (742) is axial relative to described rotor (741) inwardly to be arranged; And
Powered compressor machine rotor (730), it comprise extend around central axis (95) annular solid (731), impeller bore surface (732) and be configured to a series of impeller blades (733) of rotating around described central axis (95), described impeller bore surface (732) surrounds described stator (742);
Wherein, described rotor (741) is fixed to described impeller bore surface (732) and is positioned at described impeller bore surface (732), and the power that described rotor (741) is configured to described powered compressor machine rotor (730) is applied in response to described stator (742) rotates around described central axis (95).
2. the internal drive compressor (700) with powered compressor machine rotor according to claim 1, is characterized in that, comprise further:
External impetus supply interface (705), it comprises power conduit, described power conduit be configured to receive from external power supply electric power and described electric power is provided in described internal drive compressor (700);
Axis (715), it is fixed to described compressor housing (710) and is configured to support described inner drive (740) and described powered compressor machine rotor (730), described axis (715) comprises at least one inner passage, and at least one inner passage described comprises entry port (719);
Compressor inlet hole (720), it is configured to receiver gases and enters described internal drive compressor (700); And
Compressor air-discharging hole (725), it is configured to discharge the described gas from described internal drive compressor (700); And
Wherein, described inner drive (740) comprises power supply device (744) further, and it extends through at least one inner passage and the described entry port (719) of described axis (715) from described inner drive (740).
3. the internal drive compressor (700) with powered compressor machine rotor according to claim 2, it is characterized in that, comprise bearing of compressor system (750) further, described bearing of compressor system (750) comprises one or more magnetic bearing, described magnetic bearing is fixed to described axis (715), and is configured to support described powered compressor machine rotor (730) rotatably around described central axis (95).
4. the internal drive compressor (700) with powered compressor machine rotor according to claim 1 and 2, it is characterized in that, described compressor housing (710) comprises equalizing piston cavity (717); And
Wherein said powered compressor machine rotor (730) comprises equalizing piston (736) further, described equalizing piston (736) comprises compensating piston gasket (737) and piston head (738), and described equalizing piston (736) is arranged in described equalizing piston cavity (717).
5. the internal drive compressor (700) with powered compressor machine rotor according to claim 1 and 2, it is characterized in that, described inner drive (740) is permanent-magnet electric motor, and described rotor (741) comprises permanent magnet, and described stator (742) comprises motor stator coils.
6. the internal drive compressor (700) with powered compressor machine rotor according to claim 1 and 2, it is characterized in that, described powered compressor machine rotor (730) is further configured to pressurized gas (15), described internal drive compressor (700) comprises inner drive cooling system (780) further, described inner drive cooling system (780) is configured to the part receiving described gas (15), and will from the described part of the exchange heat of at least one in described inner drive (740) and described powered compressor machine rotor (730) to described gas (15), and discharge the described part of the described gas (15) from described inner drive cooling system (780) subsequently.
7. the internal drive compressor (700) with powered compressor machine rotor according to claim 6, is characterized in that, described inner drive cooling system (780) comprising:
Venting key (781), it is configured to the described gas (15) of discharge unit from described powered compressor machine rotor (730) downstream;
Cooling pipe (782), it is connected in described venting key (781);
Manifold (783), it is connected to described cooling pipe (782) and is configured to the described part of described gas (15) be distributed at least one described in described inner drive (740) and described powered compressor machine rotor (730); And
Reflux line (784) and air sucking mouth (785), it is configured to the described part of the described gas (15) discharging described powered compressor machine rotor (730) upstream.
8. the internal drive compressor (700) with powered compressor machine rotor according to claim 7, it is characterized in that, described compressor housing (710) comprises equalizing piston cavity (717);
Wherein, described powered compressor machine rotor (730) comprises the equalizing piston (736) being positioned at described powered compressor machine rotor (730) downstream end further, and described equalizing piston (736) is arranged in described equalizing piston cavity (717); And
Wherein said reflux line (784) is for by described equalizing piston cavity (717) and described air sucking mouth (785) pneumatic communication.
9. the internal drive compressor (701) with powered compressor machine rotor according to claim 1 and 2, it is characterized in that, described inner drive (740) and described powered compressor machine rotor (730) are included in final stage part (603), and described powered compressor machine rotor (730) is configured to final stage power turbine (633), described internal drive compressor (701) comprises further:
First stage part (601), it comprises first stage inner drive (641) and first stage power turbine (631), and described first stage part (601) is positioned at the upstream of described final stage part (603); With
Membrane portions (660), it is connected to part (601) and described final stage part (603) of described first stage, and described membrane portions (660) is configured to guide the radial fluid of discharging from described first stage part (601) to enter described final stage part (603) and is formed as axial flow of fluid; And
Wherein, described first stage power turbine (631) is configured to independent rotation from described final stage power turbine (633) rotating separation.
10. the internal drive compressor (702) with powered compressor machine rotor according to claim 1 and 2, it is characterized in that, described inner drive (740) and described powered compressor machine rotor (730) are included in final stage part (603), described powered compressor machine rotor (730) configuration is as final stage power turbine (633), and described internal drive compressor (702) comprises further:
First stage part (601), it comprises first stage power turbine (631), and described first stage power turbine (631) is supported by first stage axis (611) and driven by first stage inner drive (641);
Membrane portions (660), it is attached to the downstream of part of described first stage (601) and is positioned at the downstream of part of described first stage (601), and described membrane portions (660) is configured to guide first radial fluid of discharging from described first stage part (601) to become the first axial flow of fluid;
Interstage part (602), it is connected to described membrane portions (660) and is positioned at the downstream of described membrane portions (660), described interstage part (602) comprises interstage power turbine (632), and described interstage power turbine (632) is supported by interstage axis (612) and driven by interstage inner drive (642); And
The membrane portions (670) that pipeline connects, it is connected to described final stage part (603) and is positioned at the downstream of described final stage part (603), the membrane portions (670) that described pipeline connects is configured to guide second radial fluid of discharging from described interstage part (602) to become the second axial flow of fluid, and the membrane portions (670) that described pipeline connects comprises the passage extending the membrane portions (670) that described pipeline connects from described interstage axis (612).
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