WO2007076917A1 - Arrangement for compressing cryogenic fluids - Google Patents

Arrangement for compressing cryogenic fluids Download PDF

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Publication number
WO2007076917A1
WO2007076917A1 PCT/EP2006/011774 EP2006011774W WO2007076917A1 WO 2007076917 A1 WO2007076917 A1 WO 2007076917A1 EP 2006011774 W EP2006011774 W EP 2006011774W WO 2007076917 A1 WO2007076917 A1 WO 2007076917A1
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WO
WIPO (PCT)
Prior art keywords
intermediate storage
storage container
compressor
arrangement
liquids
Prior art date
Application number
PCT/EP2006/011774
Other languages
German (de)
French (fr)
Inventor
Robert Adler
Georg Siebert
Original Assignee
Linde Aktiengesellschaft
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 Linde Aktiengesellschaft filed Critical Linde Aktiengesellschaft
Publication of WO2007076917A1 publication Critical patent/WO2007076917A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/06—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage

Definitions

  • the invention relates to an arrangement for compressing liquids, in particular cryogenic liquids, comprising a suitable for the compression of liquids, in particular of cryogenic liquids, suitable compressor, in particular a reciprocating compressor.
  • cryogenic liquids are to be understood below as cryogenic liquids, in particular liquid hydrogen, liquefied natural gas, liquid nitrogen, liquid oxygen and other liquefied gases.
  • the object of the present invention is to disclose a generic arrangement for compressing liquids, in particular cryogenic liquids, comprising a piston compressor suitable for the compression of liquids, in particular cryogenic liquids, in which the abovementioned disadvantages can be avoided.
  • a reciprocating reservoir is connected upstream of the piston compressor on the suction side
  • the connecting line between the intermediate storage container and the reciprocating compressor is arranged such that only a liquid taking from the intermediate storage container
  • c) the pressure chamber of the reciprocating compressor is connected via a connecting line to the intermediate storage container.
  • advantageous embodiments of the inventive arrangement for compressing liquids, in particular of cryogenic liquids are characterized in that
  • the intermediate storage container is designed in the form of a pipe or pressure vessel
  • the connecting line between the intermediate storage container and the reciprocating compressor is arranged at the lowest point of the intermediate storage container
  • the piston compressor is preceded on the one hand by an intermediate storage tank and, on the other hand, by the intermediate storage tank by means of a connecting pipe connected to the pressure chamber of the piston compressor.
  • the arrangement according to the invention for compressing liquids in particular cryogenic liquids, as well as further embodiments thereof will be explained in more detail with reference to the exemplary embodiment illustrated in the FIGURE.
  • the figure shows a merely schematic representation of the arrangement according to the invention for compressing liquids, wherein the intermediate storage tank 2 and the reciprocating compressor 4 are shown only in a schematized, lateral sectional view.
  • the liquid to be compressed is fed via line 1 to the intermediate storage container 2 to be provided according to the invention.
  • Liquid is taken from the liquid phase a of the intermediate storage container 2 via line 3 and fed to the reciprocating compressor 4 on the suction side.
  • the connecting line 3 is in this case to be arranged so that at any time a withdrawal of liquid from the buffer tank 2 is ensured. It is therefore preferable to provide at the lowest point of the intermediate storage container 2.
  • the piston compressor 4 used is a so-called cryogenic compressor; By means of such compressors a trouble-free compression of cryogenic liquid can be realized.
  • Compressor piston 6 are referred to below as the pressure and suction end position of the compressor piston 6.
  • a pressure line 7 via which the compressed medium is discharged from the compressor and fed to its further use.
  • connection line 8 is now provided between the pressure chamber 5 of the reciprocating compressor 4-that is to say the rear side of the compressor piston 6 -and the intermediate storage container 2.
  • the connecting line 8 is arranged so that it necessarily corresponds to the back of the compressor piston 6. This ensures that the back of the compressor piston 6 is permanently under the suction pressure.
  • the pressure chamber 5 of the reciprocating compressor 4 is connected to the intermediate storage container 2 connecting line 8 - as shown in the figure - is arranged leading from above into the intermediate storage container 2.
  • Embodiment of the arrangement according to the invention - preferably arranged at the highest point of the compressor 4.
  • the compressor piston 6 moves into its suction-side end position during a suction cycle, it displaces the gas located on its rear side 5 via the connecting line 8 into the gas space b of the intermediate storage container 2. At the same time, exactly this volume from the reciprocating compressor 4 via the connecting line 3 and 3 is provided on the suction side sucked the suction valve.
  • connection line 8 were not provided, there would be an acceleration of the liquid column during the suction process and, as a consequence, a demolition thereof.
  • the inventively provided connecting line 8 thus ensures that during the suction cycle at the piston back 5 displaced gas is fed to the suction side of the reciprocating compressor 4.
  • the inventive arrangement for compressing liquids, in particular cryogenic liquids allows a higher degree of filling of the used Piston compressor. This results in a reduction of the power required for the compaction effort and an increase in the capacity of the reciprocating compressor.

Abstract

The invention relates to an arrangement for compressing fluids, in particular, cryogenic fluids, comprising a suitable compressor, in particular a piston compressor, for compressing fluids, in particular cryogenic fluids. According to the invention, a) an intermediate storage container (2) is arranged upstream from the piston compressor (4) on the suction side, b) the connection line (3) between the intermediate storage container (2) and the piston compressor (4) is arranged in such a manner that fluid is withdrawn exclusively from the intermediate storage container (2), and c) the pressure chamber (5) of the piston compressor (4) is connected to the intermediate storage container (2) by means of the connection line (8).

Description

Beschreibung description
Anordnung zum Verdichten von kryogenen FlüssigkeitenArrangement for compressing cryogenic liquids
Die Erfindung betrifft eine Anordnung zum Verdichten von Flüssigkeiten, insbesondere von kryogenen Flüssigkeiten, aufweisend einen für die Verdichtung von Flüssigkeiten, insbesondere von kryogenen Flüssigkeiten, geeigneten Verdichter, insbesondere einen Kolbenverdichter.The invention relates to an arrangement for compressing liquids, in particular cryogenic liquids, comprising a suitable for the compression of liquids, in particular of cryogenic liquids, suitable compressor, in particular a reciprocating compressor.
Unter dem Begriff "kryogene Flüssigkeiten" seien nachfolgend sog. tiefkalte Flüssigkeiten, insbesondere flüssiger Wasserstoff, verflüssigtes Erdgas, flüssiger Stickstoff, flüssiger Sauerstoff und andere verflüssigte Gase zu verstehen.The term "cryogenic liquids" are to be understood below as cryogenic liquids, in particular liquid hydrogen, liquefied natural gas, liquid nitrogen, liquid oxygen and other liquefied gases.
Bei gattungsgemäßen Anordnungen zum Verdichten von Flüssigkeiten, insbesondere von kryogenen Flüssigkeiten, wird bisher die Flüssigversorgungsleitung unmittelbar an die Saugseite des verwendeten Kolbenverdichters angeschlossen. Hierbei stellt sich jedoch das Problem, dass während eines Saugtaktes nicht ausschließlich Flüssigkeit angesaugt werden kann, da diese während des Ansaugtaktes verdampft. Es kommt somit zu einem Abriss der Flüssigkeitssäule. Dies hat zur Folge, dass im Kolbenverdichter eine Gasphase entsteht, die sowohl Förderleistung als auch Energieverbrauch des verwendeten Kolbenverdichters negativ beeinflusst.In generic arrangements for compressing liquids, in particular cryogenic liquids, previously the liquid supply line is connected directly to the suction side of the piston compressor used. However, this raises the problem that not only liquid can be sucked during a suction cycle, since it evaporates during the intake stroke. It comes thus to a demolition of the liquid column. This has the consequence that in the reciprocating compressor, a gas phase is formed, which adversely affects both flow rate and energy consumption of the piston compressor used.
Aufgabe der vorliegenden Erfindung ist es, eine gattungsgemäße Anordnung zum Verdichten von Flüssigkeiten, insbesondere von kryogenen Flüssigkeiten, aufweisend einen für die Verdichtung von Flüssigkeiten, insbesondere von kryogenen Flüssigkeiten, geeigneten Kolbenverdichter, anzugeben, bei der die vorgenannten Nachteile vermieden werden können.The object of the present invention is to disclose a generic arrangement for compressing liquids, in particular cryogenic liquids, comprising a piston compressor suitable for the compression of liquids, in particular cryogenic liquids, in which the abovementioned disadvantages can be avoided.
Zur Lösung dieser Aufgabe wird eine gattungsgemäße Anordnung zum Verdichten von Flüssigkeiten, insbesondere von kryogenen Flüssigkeiten, vorgeschlagen, die dadurch gekennzeichnet ist, dassTo solve this problem, a generic arrangement for compressing liquids, in particular of cryogenic liquids, proposed, which is characterized in that
a) dem Kolbenverdichter saugseitig ein Zwischenspeicherbehälter vorgeschaltet ist, b) die Verbindungsleitung zwischen dem Zwischenspeicherbehälter und dem Kolbenverdichter derart angeordnet ist, dass ausschließlich eine Flüssigentnahme aus dem Zwischenspeicherbehälter erfolgt, und c) der Druckraum des Kolbenverdichters über eine Verbindungsleitung mit dem Zwischenspeicherbehälter verbunden ist.a) a reciprocating reservoir is connected upstream of the piston compressor on the suction side, b) the connecting line between the intermediate storage container and the reciprocating compressor is arranged such that only a liquid taking from the intermediate storage container, and c) the pressure chamber of the reciprocating compressor is connected via a connecting line to the intermediate storage container.
Weitere, vorteilhafte Ausgestaltungen der erfindungsgemäße Anordnung zum Verdichten von Flüssigkeiten, insbesondere von kryogenen Flüssigkeiten, sind dadurch gekennzeichnet, dassFurther, advantageous embodiments of the inventive arrangement for compressing liquids, in particular of cryogenic liquids, are characterized in that
der Zwischenspeicherbehälter in Form eines Rohres oder Druckbehälters ausgebildet ist,the intermediate storage container is designed in the form of a pipe or pressure vessel,
die Verbindungsleitung zwischen dem Zwischenspeicherbehälter und dem Kolbenverdichter am tiefsten Punkt des Zwischenspeicherbehälters angeordnet ist,the connecting line between the intermediate storage container and the reciprocating compressor is arranged at the lowest point of the intermediate storage container,
die den Druckraum des Kolbenverdichters mit dem Zwischenspeicherbehälter verbindende Verbindungsleitung von oben in den Zwischenspeicherbehälter führend angeordnet ist undwhich is the leader of the pressure chamber of the reciprocating compressor with the intermediate storage container connecting line from above into the intermediate storage container and arranged
die den Druckraum des Kolbenverdichters mit dem Zwischenspeicherbehälter verbindende Verbindungsleitung am höchsten Punkt des Verdichters angeordnet ist.which is arranged at the highest point of the compressor connecting the pressure chamber of the reciprocating compressor with the intermediate storage container connecting line.
Erfindungsgemäß wird dem Kolbenverdichter nunmehr zum einen ein Zwischenspeicherbehälter vorgeschaltet und zum anderen dieser Zwischenspeicherbehälter mittels einer Verbindungsleitung mit dem Druckraum des Kolbenverdichters verbunden. Dies hat zur Folge, dass der in dem Druckraum des Kolbenverdichters herrschende Druck unmittelbar an dem Zwischenspeicherbehälter und damit der darin befindlichen Flüssigkeit anliegt.According to the invention, the piston compressor is preceded on the one hand by an intermediate storage tank and, on the other hand, by the intermediate storage tank by means of a connecting pipe connected to the pressure chamber of the piston compressor. This has the consequence that the pressure prevailing in the pressure chamber of the reciprocating compressor pressure is applied directly to the intermediate storage container and thus the liquid therein.
Die erfindungsgemäße Anordnung zum Verdichten von Flüssigkeiten, insbesondere von kryogenen Flüssigkeiten, sowie weitere Ausgestaltungen derselben seien anhand des in der Figur dargestellten Ausführungsbeispieles näher erläutert. Die Figur zeigt eine lediglich schematisierte Darstellung der erfindungsgemäßen Anordnung zum Verdichten von Flüssigkeiten, wobei der Zwischenspeicherbehälter 2 sowie der Kolbenverdichter 4 lediglich in einer schematisierten, seitlichen Schnittansicht dargestellt sind.The arrangement according to the invention for compressing liquids, in particular cryogenic liquids, as well as further embodiments thereof will be explained in more detail with reference to the exemplary embodiment illustrated in the FIGURE. The figure shows a merely schematic representation of the arrangement according to the invention for compressing liquids, wherein the intermediate storage tank 2 and the reciprocating compressor 4 are shown only in a schematized, lateral sectional view.
Die zu verdichtende Flüssigkeit wird über Leitung 1 dem erfindungsgemäß vorzusehenden Zwischenspeicherbehälter 2 zugeführt. Aus der Flüssigphase a des Zwischenspeicherbehälters 2 wird über Leitung 3 Flüssigkeit entnommen und saugseitig dem Kolbenverdichter 4 zugeführt. Die Verbindungsleitung 3 ist hierbei so anzuordnen, dass zu jedem Zeitpunkt eine Entnahme von Flüssigkeit aus dem Zwischenspeicherbehälter 2 gewährleistet ist. Sie ist daher vorzugsweise am tiefsten Punkt des Zwischenspeicherbehälters 2 vorzusehen.The liquid to be compressed is fed via line 1 to the intermediate storage container 2 to be provided according to the invention. Liquid is taken from the liquid phase a of the intermediate storage container 2 via line 3 and fed to the reciprocating compressor 4 on the suction side. The connecting line 3 is in this case to be arranged so that at any time a withdrawal of liquid from the buffer tank 2 is ensured. It is therefore preferable to provide at the lowest point of the intermediate storage container 2.
Bei dem verwendeten Kolbenverdichter 4 handelt es sich im Falle der Verdichtung einer kryogenen Flüssigkeit um einen sog. Kryoverdichter; mittels derartiger Verdichter ist eine problemlose Verdichtung kryogener Flüssigkeit realisierbar.In the case of the compression of a cryogenic liquid, the piston compressor 4 used is a so-called cryogenic compressor; By means of such compressors a trouble-free compression of cryogenic liquid can be realized.
Innerhalb des von einer Zylinderwand umgebenen Verdichterraumes wird ein Verdichterkolben 6 hin und her bewegt. Die beiden Umkehrpunkte desWithin the compressor chamber surrounded by a cylinder wall, a compressor piston 6 is moved back and forth. The two reversal points of the
Verdichterkolbens 6 werden nachfolgend als druck- und saugseitige Endlage des Verdichterkolbens 6 bezeichnet.Compressor piston 6 are referred to below as the pressure and suction end position of the compressor piston 6.
In der Figur dargestellt ist ferner eine Druckleitung 7, über die das verdichtete Medium aus dem Verdichter abgegeben und seiner weiteren Verwendung zugeführt wird.Also shown in the figure is a pressure line 7, via which the compressed medium is discharged from the compressor and fed to its further use.
Erfindungsgemäß ist nunmehr zwischen dem Druckraum 5 des Kolbenverdichters 4 - also der Rückseite des Verdichterkolbens 6 - und dem Zwischenspeicherbehälter 2 eine Verbindungsleitung 8 vorgesehen. Hierbei ist die Verbindungsleitung 8 so angeordnet, dass sie zwingend zur Rückseite des Verdichterkolbens 6 korrespondiert. Dadurch wird erreicht, dass die Rückseite des Verdichterkolbens 6 permanent unter dem Saugdruck steht. Vorzugsweise ist die den Druckraum 5 des Kolbenverdichters 4 mit dem Zwischenspeicherbehälter 2 verbindende Verbindungsleitung 8 - wie dies in der Figur dargestellt ist - von oben in den Zwischenspeicherbehälter 2 führend angeordnet ist.According to the invention, a connection line 8 is now provided between the pressure chamber 5 of the reciprocating compressor 4-that is to say the rear side of the compressor piston 6 -and the intermediate storage container 2. Here, the connecting line 8 is arranged so that it necessarily corresponds to the back of the compressor piston 6. This ensures that the back of the compressor piston 6 is permanently under the suction pressure. Preferably, the pressure chamber 5 of the reciprocating compressor 4 is connected to the intermediate storage container 2 connecting line 8 - as shown in the figure - is arranged leading from above into the intermediate storage container 2.
Ferner ist die Verbindungsleitung 8 - entsprechend einer weiteren vorteilhaftenFurthermore, the connecting line 8 - according to another advantageous
Ausgestaltung der erfindungsgemäßen Anordnung - vorzugsweise am höchsten Punkt des Verdichters 4 angeordnet.Embodiment of the arrangement according to the invention - preferably arranged at the highest point of the compressor 4.
Mittels dieser Ausgestaltung der erfindungsgemäßen Anordnung wird sichergestellt, dass über die Verbindungsleitung 8 Flüssigkeit aus dem Zwischenspeicherbehälter 2 in den Druckraum (5) gelangen kann. Würde dies geschehen, käme es zu einer Verdampfung der Flüssigkeit im Druckraum (5) und damit einhergehend zu einem unerwünschten, erhöhten Gasanfall.By means of this embodiment of the arrangement according to the invention, it is ensured that liquid can pass from the intermediate storage container 2 into the pressure chamber (5) via the connecting line 8. Would this happen, it would lead to evaporation of the liquid in the pressure chamber (5) and, consequently, to an undesirable, increased gas attack.
Bewegt sich der Verdichterkolben 6 während eines Saugtaktes in seine saugseitige Endlage, verdrängt er das auf seiner Rückseite 5 befindliche Gas über die Verbindungsleitung 8 in den Gasraum b des Zwischenspeicherbehälters 2. Gleichzeitig wird an der Saugseite exakt dieses Volumen vom Kolbenverdichter 4 über die Verbindungsleitung 3 und das Saugventil angesaugt.If the compressor piston 6 moves into its suction-side end position during a suction cycle, it displaces the gas located on its rear side 5 via the connecting line 8 into the gas space b of the intermediate storage container 2. At the same time, exactly this volume from the reciprocating compressor 4 via the connecting line 3 and 3 is provided on the suction side sucked the suction valve.
Wäre die Verbindungsleitung 8 nicht vorgesehen, käme es während des Ansaugvorganges zu einer Beschleunigung der Flüssigsäule und damit einhergehend zu einem Abriss derselben.If the connection line 8 were not provided, there would be an acceleration of the liquid column during the suction process and, as a consequence, a demolition thereof.
Die erfindungsgemäß vorzusehende Verbindungsleitung 8 stellt somit sicher, dass während des Saugtaktes an der Kolbenrückseite 5 verdrängtes Gas zur Saugseite des Kolbenverdichters 4 geführt wird.The inventively provided connecting line 8 thus ensures that during the suction cycle at the piston back 5 displaced gas is fed to the suction side of the reciprocating compressor 4.
Während des Drucktaktes wird das vorher in den Zwischenspeicherbehälter 2 eingeschobene Gas nunmehr wieder in den Kolbenverdichterrückraum 5 gesaugt. Das im Zwischenspeicherbehälter 2 "fehlende" Gasvolumen wird dabei durch über die Leitung 1 nachströmende Flüssigkeit ersetzt.During the pressure cycle, the previously inserted into the buffer tank 2 gas is now sucked back into the piston compressor back space 5. The "missing" in the buffer tank 2 gas volume is replaced by flowing over the line 1 liquid.
Die erfindungsgemäße Anordnung zum Verdichten von Flüssigkeiten, insbesondere von kryogenen Flüssigkeiten, ermöglicht einen höheren Füllgrad der verwendeten Kolbenverdichter. Daraus resultiert eine Verringerung des für die Verdichtung erforderlichen Leistungsaufwandes sowie eine Erhöhung der Förderleistung des Kolbenverdichters. The inventive arrangement for compressing liquids, in particular cryogenic liquids, allows a higher degree of filling of the used Piston compressor. This results in a reduction of the power required for the compaction effort and an increase in the capacity of the reciprocating compressor.

Claims

Patentansprüche claims
1. Anordnung zum Verdichten von Flüssigkeiten, insbesondere von kryogenen Flüssigkeiten, aufweisend einen für die Verdichtung von Flüssigkeiten, insbesondere von kryogenen Flüssigkeiten, geeigneten Verdichter, insbesondere einen Kolbenverdichter, dadurch gekennzeichnet, dass a) dem Kolbenverdichter (4) saugseitig ein Zwischenspeicherbehälter (2) vorgeschaltet ist, b) die Verbindungsleitung (3) zwischen dem Zwischenspeicherbehälter (2) und dem Kolbenverdichter (4) derart angeordnet ist, dass ausschließlich eine Flüssigentnahme aus dem Zwischenspeicherbehälter (2) erfolgt, und c) der Druckraum (5) des Kolbenverdichters (4) über eine Verbindungsleitung (8) mit dem Zwischenspeicherbehälter (2) verbunden ist.1. An arrangement for compressing liquids, in particular of cryogenic liquids, comprising a for the compression of liquids, in particular of cryogenic liquids, suitable compressor, in particular a reciprocating compressor, characterized in that a) the reciprocating compressor (4) on the suction side, a buffer tank (2) upstream, b) the connecting line (3) between the intermediate storage container (2) and the reciprocating compressor (4) is arranged such that only a liquid taking from the intermediate storage container (2), and c) the pressure chamber (5) of the reciprocating compressor (4 ) is connected via a connecting line (8) with the intermediate storage container (2).
2. Anordnung zum Verdichten von Flüssigkeiten nach Anspruch 1 , dadurch gekennzeichnet, dass der Zwischenspeicherbehälter (2) in Form eines Rohres oder Druckbehälters ausgebildet ist.2. Arrangement for compressing liquids according to claim 1, characterized in that the intermediate storage container (2) is designed in the form of a pipe or pressure vessel.
3. Anordnung zum Verdichten von Flüssigkeiten nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Verbindungsleitung (3) zwischen dem3. Arrangement for compressing liquids according to claim 1 or 2, characterized in that the connecting line (3) between the
Zwischenspeicherbehälter (2) und dem Kolbenverdichter (4) am tiefsten Punkt des Zwischenspeicherbehälters (2) angeordnet ist.Intermediate storage container (2) and the reciprocating compressor (4) at the lowest point of the intermediate storage container (2) is arranged.
4. Anordnung zum Verdichten von Flüssigkeiten nach einem der vorhergehenden Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die den Druckraum (5) des4. Arrangement for compressing liquids according to one of the preceding claims 1 to 3, characterized in that the pressure chamber (5) of the
Kolbenverdichters (4) mit dem Zwischenspeicherbehälter (2) verbindende Verbindungsleitung (8) von oben in den Zwischenspeicherbehälter (2) führend angeordnet ist.Piston compressor (4) with the intermediate storage container (2) connecting connecting line (8) from above into the intermediate storage container (2) is arranged leader.
5. Anordnung zum Verdichten von Flüssigkeiten nach einem der vorhergehenden Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die den Druckraum (5) des Kolbenverdichters (4) mit dem Zwischenspeicherbehälter (2) verbindende Verbindungsleitung (8) am höchsten Punkt des Verdichters (4) angeordnet ist. 5. Arrangement for compressing liquids according to one of the preceding claims 1 to 4, characterized in that the pressure chamber (5) of the reciprocating compressor (4) with the intermediate storage container (2) connecting connecting line (8) at the highest point of the compressor (4) is arranged.
PCT/EP2006/011774 2006-01-05 2006-12-07 Arrangement for compressing cryogenic fluids WO2007076917A1 (en)

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CN103388744B (en) * 2013-08-13 2016-08-10 刘群艳 A kind of liquid nitrogen conveyer and operational approach thereof

Citations (3)

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Publication number Priority date Publication date Assignee Title
EP0185943A2 (en) * 1984-12-11 1986-07-02 Cryomec AG Pump unit for cryogenic fluids
US5551488A (en) * 1993-03-30 1996-09-03 Process System International, Inc. Method of filling a two-compartments storage tank with cryogenic fluid
US20030051486A1 (en) * 2001-09-19 2003-03-20 Mihai Ursan Method and apparatus for pumping a cryogenic fluid from a storage tank

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0185943A2 (en) * 1984-12-11 1986-07-02 Cryomec AG Pump unit for cryogenic fluids
US5551488A (en) * 1993-03-30 1996-09-03 Process System International, Inc. Method of filling a two-compartments storage tank with cryogenic fluid
US20030051486A1 (en) * 2001-09-19 2003-03-20 Mihai Ursan Method and apparatus for pumping a cryogenic fluid from a storage tank

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