DE102007048778A1 - Method for increasing the pressure for various working fluids - Google Patents

Method for increasing the pressure for various working fluids Download PDF

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Publication number
DE102007048778A1
DE102007048778A1 DE200710048778 DE102007048778A DE102007048778A1 DE 102007048778 A1 DE102007048778 A1 DE 102007048778A1 DE 200710048778 DE200710048778 DE 200710048778 DE 102007048778 A DE102007048778 A DE 102007048778A DE 102007048778 A1 DE102007048778 A1 DE 102007048778A1
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DE
Germany
Prior art keywords
compressors
radial
pressure
axial
compressor
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.)
Withdrawn
Application number
DE200710048778
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German (de)
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.)
Rerum Cognitio Gesell fur Marktintegration Deutscher Innovat mbH
Original Assignee
Rerum Cognitio Gesell fur Marktintegration Deutscher Innovat mbH
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.)
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Publication date
Application filed by Rerum Cognitio Gesell fur Marktintegration Deutscher Innovat mbH filed Critical Rerum Cognitio Gesell fur Marktintegration Deutscher Innovat mbH
Priority to DE200710048778 priority Critical patent/DE102007048778A1/en
Priority to PCT/DE2008/001642 priority patent/WO2009046700A1/en
Priority to DE112008003355T priority patent/DE112008003355A5/en
Publication of DE102007048778A1 publication Critical patent/DE102007048778A1/en
Withdrawn legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08Centrifugal pumps
    • F04D17/16Centrifugal pumps for displacing without appreciable compression
    • F04D17/165Axial entry and discharge
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/2238Special flow patterns
    • F04D29/225Channel wheels, e.g. one blade or one flow channel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Die Erfindung betrifft ein Verdichtungsverfahren, bei dem die Wirkprinzipien der Radial- und Axialverdichter in einer Prozessstufe ablaufen. Eine derartige technische Lösung wird in erster Linie im Bereich der Energiewirtschaft und im chemischen Anlagenbau benötigt. Bei der Verdichtung von Arbeitsfluid wird investive kinetische Energie durch verzögerte Strömung und Zentrifugalkraft in Druck umgewandelt. Die dabei entstehenden Verluste differieren je nach Bauart des Verdichters. In Abhängigkeit vom Massendurchsatz und dem benötigten Druckgefälle besitzen Radial- und Axialverdichter jeweils bauartbedingte Vorzüge. Axialverdichter arbeiten mit großen Durchsätzen bei relativ niedrigem Stufendruckgefälle, wogegen Radialverdichter bei geringeren Durchsätzen höhere Stufendruckgefälle erzielen. Das Entwicklungsniveau beider Verdichterarten ist sehr hoch. Dennoch fehlen besonders für kleinere und mittlere Anlagengrößen Verdichter, die zwischen dem Leistungsspektrum beider Verdichterarten liegen. Aufgabe der Erfindung ist, den Leistungsbereich abzudecken, der zwischen der effizienten Radial- und Axialverdichtung liegt.The invention relates to a compression method in which the active principles of the radial and axial compressors run in one process stage. Such a technical solution is needed primarily in the field of energy and chemical plant construction. In the compression of working fluid, kinetic energy is converted into pressure by delayed flow and centrifugal force. The resulting losses differ depending on the design of the compressor. Depending on the mass flow rate and the required pressure gradient, radial and axial compressors each have design-related advantages. Axial compressors operate at high flow rates at relatively low step pressure drop, whereas centrifugal compressors achieve higher step pressure drops at lower flow rates. The development level of both compressor types is very high. Nevertheless, especially for smaller and medium plant sizes compressors are missing, which lie between the power spectrum of both compressor types. The object of the invention is to cover the power range that lies between the efficient radial and axial compression.

Description

Die Erfindung betrifft ein Verdichtungsverfahren, bei dem die Wirkprinzipien der Radial- und Axialverdichter in einer Prozessstufe ablaufen. Eine derartige technische Lösung wird in erster Linie im Bereich der Energiewirtschaft und im chemischen Anlagenbau benötigt.The The invention relates to a compacting method in which the principles of action run the radial and axial compressor in a single process stage. Such a technical solution is primarily used in the energy and chemical sectors Plant construction needed.

Bei der Verdichtung von Arbeitsfluids wird investive kinetische Energie durch verzögerte Strömung und Zentrifugalkraft in Druck umgewandelt. Die dabei entstehenden Verluste differieren je nach Bauart des Verdichters. In Abhängigkeit vom Massendurchsatz und dem benötigten Druckgefälle besitzen Radial- und Axialverdichter jeweils bauartbedingte Vorzüge. Axialverdichter arbeiten mit großen Durchsätzen bei relativ niedrigem Stufendruckgefälle, wogegen Radialverdichter bei geringeren Durchsätzen höhere Stufendruckgefälle erzielen. Tendenziell verbessert sich die Verdichtungseffiziens mit zunehmender Größe der Turbomaschinen. Das Entwicklungsniveau beider Verdichterarten ist sehr hoch. Dennoch fehlen besonders für kleinere und mittlere Anlagengrößen Verdichter, die zwischen dem Leistungsspektrum beider Verdichterarten liegen.at the compression of working fluids becomes investive kinetic energy delayed by flow and centrifugal force converted into pressure. The resulting Losses differ depending on the design of the compressor. Dependent on from the mass flow rate and the required pressure drop have radial and axial compressor each design-related benefits. axial compressor work with big ones throughputs at relatively low step pressure gradient, whereas radial compressor achieve higher step pressure drops at lower flow rates. The compression efficiency tends to improve with increasing Size of turbomachinery. The development level of both compressor types is very high. Still missing especially for smaller and medium plant sizes compressors, which lie between the performance spectrum of both compressor types.

Es ist deshalb Aufgabe der Erfindung, den Leistungsbereich abzudecken, der zwischen der effizienten Radial- und Axialverdichtung liegt.It It is therefore an object of the invention to cover the power range, which lies between the efficient radial and axial compression.

Die Aufgabe wird erfindungsgemäß im Wesentlichen durch die kennzeichnenden Merkmale der Ansprüche 1 bis 3 gelöst. Danach wird das Arbeitsfluid axial angesaugt (1), radial in einem geschlossenen Kanal beschleunigt (2), im Rotor (3) umgelenkt (4), axial in ein Leitgitter (5) geblasen, dort entdrallt (6) und durch Verzögerung der Strömung (7) verdichtet. Die 1 ist zum besseren Verständnis ohne Außenhaut dargestellt. Hohe Drehzahlen erhöhen den Anteil der Druckerhöhung durch die Zentrifugalkraft und verbessern die Effizienz kleinerer Turbomaschinen. Sie erzeugen nachteilig hohe Reibungsverluste zwischen Rotor und Gehäuse, weswegen die Grenzschicht abgesaugt werden muss. Bei entsprechender Auslegung der Strömungskanäle lässt sich hiermit bei einem guten Stufendruckgefälle auch der Durchsatz erhöhen.The object is achieved according to the invention essentially by the characterizing features of claims 1 to 3. Thereafter, the working fluid is sucked in axially ( 1 ), accelerated radially in a closed channel ( 2 ), in the rotor ( 3 ) ( 4 ), axially into a guide grid ( 5 ), where it is de-twisted ( 6 ) and by delaying the flow ( 7 ) compacted. The 1 is shown without outer skin for a better understanding. High speeds increase the proportion of pressure increase due to the centrifugal force and improve the efficiency of smaller turbomachinery. They disadvantageously generate high friction losses between the rotor and the housing, which is why the boundary layer has to be extracted. With a suitable design of the flow channels can be hereby increase at a good step pressure gradient and the throughput.

11
axialer Eintritt des Arbeitsfluidsaxial Entry of the working fluid
22
radiale Beschleunigung im Strömungskanalradial Acceleration in the flow channel
33
Rotor (ohne Außenhaut dargestellt)rotor (without outer skin shown)
44
Umlenkung von radialer in axialer Strömungredirection from radial to axial flow
55
axiale Strömungaxial flow
66
Leitgitterguide grid
77
Diffusordiffuser

Claims (3)

Verfahren zur Druckerhöhung für diverse Arbeitsfluids, dadurch gekennzeichnet, dass das Arbeitsfluid in einem Rotor (3) axial (1) angesaugt, radial (2) in einem geschlossenen Kanal beschleunigt, im Rotor umgelenkt und axial (4) ausgeblasen wird, dass der rotierende Arbeitsfluidstrom im Leitgitter (6) entdrallt und im Diffusor (7) verzögert wird.Method for increasing the pressure for various working fluids, characterized in that the working fluid in a rotor ( 3 ) axially ( 1 sucked, radially ( 2 accelerated in a closed channel, deflected in the rotor and axially ( 4 ) is blown out, that the rotating working fluid flow in the guide grid ( 6 ) and in the diffuser ( 7 ) is delayed. Verfahren zur Druckerhöhung für diverse Arbeitsfluids, dadurch gekennzeichnet, dass das Verfahren mehrstufig ausführbar ist.Method for increasing the pressure for various working fluids, thereby characterized in that the method is multi-stage executable. Verfahren zur Druckerhöhung für diverse Arbeitsfluids, dadurch gekennzeichnet, dass zur Senkung der Reibungsverluste die Grenzschicht des Rotorgehäuses abgesaugt wird.Method for increasing the pressure for various working fluids, thereby characterized in that to reduce the friction losses, the boundary layer of the rotor housing is sucked off.
DE200710048778 2007-10-10 2007-10-10 Method for increasing the pressure for various working fluids Withdrawn DE102007048778A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE200710048778 DE102007048778A1 (en) 2007-10-10 2007-10-10 Method for increasing the pressure for various working fluids
PCT/DE2008/001642 WO2009046700A1 (en) 2007-10-10 2008-10-10 Method for increasing the pressure for various working fluids
DE112008003355T DE112008003355A5 (en) 2007-10-10 2008-10-10 Method for increasing the pressure for various working fluids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710048778 DE102007048778A1 (en) 2007-10-10 2007-10-10 Method for increasing the pressure for various working fluids

Publications (1)

Publication Number Publication Date
DE102007048778A1 true DE102007048778A1 (en) 2009-04-16

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DE200710048778 Withdrawn DE102007048778A1 (en) 2007-10-10 2007-10-10 Method for increasing the pressure for various working fluids
DE112008003355T Withdrawn DE112008003355A5 (en) 2007-10-10 2008-10-10 Method for increasing the pressure for various working fluids

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DE112008003355T Withdrawn DE112008003355A5 (en) 2007-10-10 2008-10-10 Method for increasing the pressure for various working fluids

Country Status (2)

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DE (2) DE102007048778A1 (en)
WO (1) WO2009046700A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063194A (en) * 1934-03-15 1936-12-08 Roy Paul Mary Ferdinan Maurice Rotary pump and compressor
US2857849A (en) * 1953-11-13 1958-10-28 Joseph R Smylie Motor driven pumping units
US3779668A (en) * 1972-05-11 1973-12-18 Mcneil Corp Stage for a centrifugal pump
US4304104A (en) * 1980-05-02 1981-12-08 Northern Natural Gas Company Pitot heat pump
US5239821A (en) * 1991-07-11 1993-08-31 The United States Of America As Represented By The Secretary Of The Navy Underwater turbojet engine
NL1009759C2 (en) * 1998-07-28 2000-02-01 Vogel Willi Ag Rotation device.

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Publication number Publication date
WO2009046700A1 (en) 2009-04-16
DE112008003355A5 (en) 2010-09-16

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8143 Withdrawn due to claiming internal priority