EP1382855A2 - Turbomachine avec système de recirculation de fluide intégré - Google Patents

Turbomachine avec système de recirculation de fluide intégré Download PDF

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Publication number
EP1382855A2
EP1382855A2 EP03011631A EP03011631A EP1382855A2 EP 1382855 A2 EP1382855 A2 EP 1382855A2 EP 03011631 A EP03011631 A EP 03011631A EP 03011631 A EP03011631 A EP 03011631A EP 1382855 A2 EP1382855 A2 EP 1382855A2
Authority
EP
European Patent Office
Prior art keywords
fluid
blade
stator
rotor
flow path
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03011631A
Other languages
German (de)
English (en)
Other versions
EP1382855A3 (fr
EP1382855B1 (fr
Inventor
Volker Dr.-Ing. Gümmer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rolls Royce Deutschland Ltd and Co KG
Original Assignee
Rolls Royce Deutschland Ltd and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rolls Royce Deutschland Ltd and Co KG filed Critical Rolls Royce Deutschland Ltd and Co KG
Publication of EP1382855A2 publication Critical patent/EP1382855A2/fr
Publication of EP1382855A3 publication Critical patent/EP1382855A3/fr
Application granted granted Critical
Publication of EP1382855B1 publication Critical patent/EP1382855B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
    • F04D29/324—Blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/542—Bladed diffusers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/682—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid extraction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/684—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid injection

Definitions

  • the invention relates to a fluid flow machine with an integrated fluid circulation system.
  • the aerodynamic load capacity of components of a fluid flow machine for example, wind instruments, compressors, Pumps and fans, through the growth and the separation of profile boundary layers on the blade surfaces and the sidewall boundary layers on the hub and the housing are formed, limited.
  • a suction on rotors and stators and a derivative of the Fluids to a location outside the flow paths of the flow machine show US 2,720,356 and US 5,904,470, EP 1 013 937 A2 and DE 1 815 229 A.
  • a continuous recirculation of fluid between axial gap and blade row is known from DE 1 428 188 A, while a recirculation of blade row to blade row in US 2,749,027, US 2,933,238 and US 2,870,957.
  • the invention is based on the object, a fluid flow machine to create, which in a simple structure, lower Number of parts and cost-effective manufacturability while avoiding the disadvantages of the prior art a particular has high aerodynamic load.
  • the present invention relates to fluid flow machines like blowers, compressors, pumps and fans in axial, semi-axial or radial design with gaseous or liquid working medium (fluid).
  • the flow machine consists of one or more stages. Each stage usually includes a rotor and a stator, in some cases exists only a rotor.
  • the rotor consists of one Number of blades connected to the rotating shaft of the Turbomachine are connected and energy to the working fluid submit.
  • the rotor can be with or without shroud on be executed outer blade end.
  • the stator is in turn from a number of fixed blades, either on both ends with shroud or hub side with free Can be performed blade end.
  • the flow machine is usually surrounded by a housing, in others Cases (eg in propellers or propellers) exists no housing.
  • the turbomachine can be a stator before the first rotor (leading wheel). Alternatively to this can be rotatably mounted at least one stator or Vorleitrad be and for adjustment an accessible from outside the housing Spindle have. In a special embodiment can the turbomachine also at least one row having adjustable rotors.
  • said turbomachine in multistage have two opposite waves, so that the rotor blade rows from stage to stage the Change the direction of rotation. There are no stators between successive rotors.
  • the Fluid flow machine such a bypass configuration have that the single-flow annular channel behind a the blade row divides into two concentric ring channels, which in turn accommodate at least one row of blades each.
  • At least one blade row (rotor or stator) of the fluid flow machine both a device for removing fluid from the main flow path as also a device for supplying fluid into the main flow path provided (bifunctional flow control). At least one exists in connection with the removal device a conduit for returning the withdrawn fluid a further upstream location on the main flow path.
  • the supply device is connected to at least one line connected to the from a further downstream position Fluid is returned at the main flow path.
  • the central object of the invention is thus an integrated System for continuous fluid circulation, which is a bifunctional Flow control on at least one row of blades allows and therefore, in terms of concept, the effectiveness and the reuse along several stages the fluid flow machine of the prior art differentiates known solutions.
  • At least one blade row of the Turbomachine both at least one device for fluid withdrawal as well as at least one device for Provided fluid supply to Schaufelkanalbeskynden surfaces.
  • this feature is over several Blade rows such that a means for fluid removal on at least one blade of at least one stator or Rotor row via at least one line to a device to the fluid supply opens, located at an upstream Place the flow path on at least one blade of at least one stator or rotor row is located.
  • the inventively provided lines can either a allow free flow of the fluid or alternatively with a fixed or variably controllable throttle body provided be.
  • the line to the collection of withdrawn fluid quantities of individual blades of the fluid flow machine with a preferably on the periphery of the main flow path, in which individual lines lead or from which or the go out several lines.
  • a supply chamber be provided. Both the discharge chamber and the supply chamber serve to equalize the fluid flow and a corresponding, if necessary Pressure compensation.
  • Fig. 1 shows a schematic representation of the Prior art known solutions for fluid removal or Fluid supply. It can be seen that a blow-off of fluid either from a rotor or a stator (rotor or stator blade) done away from the flow machine. There An auxiliary pump 3 can be used. Furthermore is it is known from an external source, for example one To supply auxiliary pump, a rotor or stator fluid.
  • Fig. 2 describes further solutions according to the prior Technology. These include recirculation between axial gaps, the recirculation between axial gap and blade row (rotor or stator), as well as the recirculation between rows of blades (Rotor or stator).
  • Fig. 3 shows the scope of the present invention to clarify some possible configurations of the Main flow path of the flow machine according to the invention with integrated fluid circulation system.
  • Fig. 4 shows the definitions of the invention used Concept of "shovel-channel-limiting surfaces". there is, as is apparent from the caption of Fig. 4, a different arrangement and dimensioning of the individual Areas provided.
  • Fig. 5 shows a schematic representation of a possible Embodiment of the inventive concept with a continuous Fluid circulation. It can be seen that here Circulation lines alternately between rotors 1 and stators 2 are provided to the blade rows according to the invention To give bifunctionality.
  • the fluid removal and supply can either on a rotor or on a stator (or on a respective Shovel thereof), wherein the fluid by in detail not shown recesses in blades of the rotor or stator enters or exits.
  • FIG. 1 shows a schematic representation of a possible Embodiment of the inventive concept with a continuous Fluid circulation. It can be seen that here Circulation lines alternately between rotors 1 and stators 2 are provided to the blade rows according to the invention To give bifunctionality.
  • the fluid removal and supply can either on a rotor or on a stator (or on a respective Shovel thereof), wherein the fluid by in detail not shown recesses in blades of the rotor or stator enters or exits.
  • a throttle body 5 which optionally variably adjustable is to the inventive design to different Adjust operating conditions of the turbomachine to be able to.
  • the removal of fluid from the flow path the Strömungsarbeitsmaschine by Schaufelkanalbeskynde Surfaces on at least one blade at least a rotor or stator row 1, 2 connected to a collection and guiding the fluid to at least one further upstream located blade row, connected to a supply of the Fluids in the flow path of the fluid flow machine through blade channel limiting surfaces on at least one Blade of a rotor or stator row 1 or 2. It takes place the transfer of the fluid from the sampling point to the feed point by means of the line 4 at free line / chamber flow cross-section or in a restricted manner via an optionally modulatable throttle element 5 in the transfer path or in the line 4.
  • the circulation system always in such a way that at least one Blade of a rotor or stator row by simultaneous Presence of a donor site and a feeding site one bifunctional flow influencing possible, and thus bifunctionality is made.
  • Schaufelkanalbeskyinsky surfaces are as shown in Fig. 4, all surfaces of a Shovel itself (suction side, pressure side, front edge and Trailing edge), surfaces on the hub and housing of the turbomachine with a location between the leading and trailing edges of the considered blade row, surfaces on hub or Housing with fixed connection to the blade (blade platforms, Shrouds, blisk or bling configurations) between a location 25% of the local meridional blade chord length (CmG or CmN) located in front of the leading edge and the leading edge itself, surfaces on the hub or housing without a fixed connection to the bucket (free rotor or stator ends) between one Location 35% of the local meridional blade chord length (CmG or CmN) located in front of the leading edge and the leading edge even.
  • CmG or CmN local meridional blade chord length
  • FIGS. 6 and 7 received.
  • Fig. 6 shows an on or in a not further detail illustrated housing of the flow machine trained Fluid discharge chamber 6 with arbitrary shape, which is connected to the line 4 and at least one Opening on blade channel limiting surfaces at least a blade of a stator or a stator 2 in conjunction stands. Furthermore, it can be seen that the line 4 is formed in the region of the housing and a transfer path forms. It is at least one line 4 and / or one Discharge chamber 6 is provided. The line 4 opens into an or located on the housing fluid supply chamber 7, which in terms their dimensioning and shaping ausgestaltbar is and communicates with at least one opening on one shovel channel limiting surface at least one Blade of a further upstream stator row or a stator 2.
  • the bifunctionality has at least one blade at least one the integrated into the fluid circulation system stator rows a Number of openings on the shroud-channel limiting surfaces of which a part with a discharge chamber 6 and the remaining part is connected to a supply chamber 7.
  • FIG. 6 shows in their lower half of the illustration a variant embodiment, in which the discharge chamber 6, the lines 4 and the Supply chamber 7 individual rotor rows are assigned.
  • the wires 4 are in this case in or on the rotor drum or formed the hub of the rotor.
  • Bifunctionality has at least one scoop at least one of the integrated into the fluid circulation system Rotor rows a number of openings on Schaufelkanalbegrenzenden Surfaces on, of which a part with a discharge chamber 6 and the remaining part with a supply chamber. 7 connected is.
  • FIG. 7 shows an alternative embodiment in which a fluid discharge chamber located in or on the rotor drum 6 selectable shape is associated with at least one Opening on a blade channel limiting surface at least a blade of a row of stator 2. Furthermore, a in the rotor drum 1 located transfer path (line 4) from at least one line and / or a chamber selectable Form provided, which communicates with fluid discharge chamber 6. In or on the rotor drum is a fluid supply chamber 7 selectable shape formed, which in conjunction is at least one opening at a Schaufelkanalbegrenzenden Surface of at least one blade of a further upstream stator row 2.
  • Fig. 7 shows an alternative or additional Embodiment in which a located in or on the housing Fluid discharge chamber 6 selectable shape with at least an opening on a blade channel limiting surface at least one blade of a rotor row 1 in conjunction stands.
  • a transfer path (line 4) is formed. This includes, as with the others Embodiments, at least one line and / or a Chamber of selectable shape, which is associated with at least an opening on Schaufelkanalbeskynden surfaces at least one blade of a further upstream Rotor series 1.
  • the bifunctionality has at least one blade at least one of in the fluid circulation system integrated rotor rows a number of openings on Schaufelkanalbeskynden surfaces of which a part with a discharge chamber 6 and the remaining part with a supply chamber 7 is ally.
  • Fig. 8 shows an embodiment with a variable Stator vane of a stator 2, which is also a Vorleitschaufel can be.
  • This invention has the above-described bifunctional construction.
  • the stator blade consists of a profiled airfoil and one connected to this Spindle passing through the housing of the fluid flow machine leads to the outside and there the connection to any Adjustment mechanism allows.
  • the spindle 8 is at its own Axis rotatably mounted on or in the housing and has a any cross-sectional profile along its axis.
  • the Spindle is hollow inside and points along its entire length or over parts of their length two next to each other or into each other lying on channels.
  • One of said channels of the spindle 8 serves the fluid supply to the blade and has for this purpose a side or head-side inlet, which is the inflow from the fluid supply chamber 7 allows.
  • this spindle channel is at least one cavity in the blade interior with at least one opening on surfaces the variable stator blade in connection.
  • the other one said Spindle channels has at least one cavity in the Bucket interior with at least one opening on surfaces of variable stator blade in conjunction.
  • This spindle channel serves the fluid discharge from the blade and has to this Purpose a side or head outlet, which is the outflow in the fluid discharge chamber 6 allows. Warehousing the spindle 8 in the housing can be either directly or via at least a slide bushing done. In the embodiment shown a total of three bushings are provided.
  • a variable, bifunctional stator blade according to the invention in addition to the Spindle with storage on the housing another, internal Spindle with storage in a fixed area on the hub the Strömungsarbeitsmaschine have. Then it can be beneficial be the fluid drain via an outward to the housing leading spindle channel and a related Allow discharge chamber on the housing, but the fluid supply via a coming from the hub spindle and a channel to ensure that it is connected to the hub. It may also be advantageous to supply the fluid via a coming from the housing spindle and a channel to allow a communicating supply chamber on the housing but the fluid drainage via an inward leading to the hub Spindle channel and an associated discharge chamber to ensure at the hub.
  • the fluid circulation system according to the invention operates continuously active and leads over a wide operating range of Turbomachine to a strong increase in aerodynamic Resilience.
  • the embodiment of the invention provides a significant tighter dimensioning of the entire turbomachine.
  • the fluid circulation system according to the invention is self-driving and does not require energy from outside the flow machine. Through the complete internal circulation of fluid becomes a fluid mass loss between inlet and outlet of the fluid flow machine avoided. It will thus be an effective reuse the extracted fluid elsewhere in the fluid flow machine allows.
  • the invention further has the advantage that in particular by the bifunctionality of the invention or one several rows of blades a very intensive exchange of fluid reached between Schaufelkanalbeskynden surfaces becomes, so the surfaces, which are relevant to the boundary layer structure and involved in the loss generation in the machine are.
  • the systematic repetition along the steps of Turbomachine as well as the mesh of one or the other multiple fluid removal / supply schemes is the cause of Achieving a greatly increased aerodynamic resilience all blade rows of the turbomachine (rotors and stators).
  • the flow machine can be maintained while maintaining or improve the efficiency of up to 2% the number the built-in parts by about 50% compared to a conventional Lower built flow working machine. This is a Cost reduction by around 20% achievable.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP03011631A 2002-07-20 2003-05-22 Turbomachine avec système de recirculation de fluide intégré Expired - Lifetime EP1382855B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10233032 2002-07-20
DE10233032A DE10233032A1 (de) 2002-07-20 2002-07-20 Strömungsarbeitsmaschine mit integriertem Fluidzirkulationssystem

Publications (3)

Publication Number Publication Date
EP1382855A2 true EP1382855A2 (fr) 2004-01-21
EP1382855A3 EP1382855A3 (fr) 2005-03-23
EP1382855B1 EP1382855B1 (fr) 2006-10-25

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EP03011631A Expired - Lifetime EP1382855B1 (fr) 2002-07-20 2003-05-22 Turbomachine avec système de recirculation de fluide intégré

Country Status (4)

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US (1) US7077623B2 (fr)
EP (1) EP1382855B1 (fr)
DE (2) DE10233032A1 (fr)
ES (1) ES2272841T3 (fr)

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EP1536147A2 (fr) 2003-11-26 2005-06-01 Rolls-Royce Deutschland Ltd & Co KG Turbo compresseur ou pompe avec injection de fluide pour influencer la couche limite
EP1659293A3 (fr) * 2004-11-17 2006-12-20 Rolls-Royce Deutschland Ltd & Co KG Turbomachine
WO2007051444A3 (fr) * 2005-11-03 2007-06-21 Mtu Aero Engines Gmbh Compresseur multietage pour une turbine a gaz presentant des orifices de purge et des orifices d'insufflation pour stabiliser le flux comprime
EP1898067A2 (fr) 2006-08-31 2008-03-12 Rolls-Royce Deutschland Ltd & Co KG Retour de fluide dans un corps séparé de machines de traitement de flux avec une configuration de flux secondaire
EP1536146A3 (fr) * 2003-11-26 2008-04-02 Rolls-Royce Deutschland Ltd & Co KG Turbomachine et prélèvement de fluide
US8251648B2 (en) 2008-02-28 2012-08-28 Rolls-Royce Deutschland Ltd & Co Kg Casing treatment for axial compressors in a hub area
US8257022B2 (en) 2008-07-07 2012-09-04 Rolls-Royce Deutschland Ltd Co KG Fluid flow machine featuring a groove on a running gap of a blade end
US8382422B2 (en) 2008-08-08 2013-02-26 Rolls-Royce Deutschland Ltd & Co Kg Fluid flow machine
WO2011157398A3 (fr) * 2010-06-14 2013-04-04 Rolls-Royce Deuschland Ltd. & Co. Kg Turbomachine à réduction de bruit
US8419355B2 (en) 2007-08-10 2013-04-16 Rolls-Royce Deutschland Ltd & Co Kg Fluid flow machine featuring an annulus duct wall recess
RU2525997C2 (ru) * 2012-08-28 2014-08-20 Открытое акционерное общество "Научно-производственное объединение "Сатурн" Многоступенчатый компрессор турбомашины
US9249686B2 (en) 2012-03-12 2016-02-02 Mtu Aero Engines Gmbh Housing and turbomachine
RU2679098C2 (ru) * 2016-08-01 2019-02-05 Алексей Анатольевич Пупынин Лопасть с каналом разрежения

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US12209541B1 (en) 2024-05-09 2025-01-28 Rolls-Royce North American Technologies Inc. Adjustable fan track liner with dual slotted array active fan tip treatment for distortion tolerance
US12168983B1 (en) 2024-06-28 2024-12-17 Rolls-Royce North American Technologies Inc. Active fan tip treatment using rotating drum array in fan track liner with axial and circumferential channels for distortion tolerance
US12209502B1 (en) 2024-06-28 2025-01-28 Rolls-Royce North American Technologies Inc. Active fan tip treatment using rotating drum array with axial channels in fan track liner for distortion tolerance

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EP1536147A3 (fr) * 2003-11-26 2008-04-09 Rolls-Royce Deutschland Ltd & Co KG Turbo compresseur ou pompe avec injection de fluide pour influencer la couche limite
EP1536147A2 (fr) 2003-11-26 2005-06-01 Rolls-Royce Deutschland Ltd & Co KG Turbo compresseur ou pompe avec injection de fluide pour influencer la couche limite
EP1536146A3 (fr) * 2003-11-26 2008-04-02 Rolls-Royce Deutschland Ltd & Co KG Turbomachine et prélèvement de fluide
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EP1382855A3 (fr) 2005-03-23
EP1382855B1 (fr) 2006-10-25
ES2272841T3 (es) 2007-05-01
US20040081552A1 (en) 2004-04-29
DE50305466D1 (de) 2006-12-07
DE10233032A1 (de) 2004-01-29
US7077623B2 (en) 2006-07-18

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