EP0231775A1 - Liquid ring machine - Google Patents

Liquid ring machine Download PDF

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Publication number
EP0231775A1
EP0231775A1 EP87100412A EP87100412A EP0231775A1 EP 0231775 A1 EP0231775 A1 EP 0231775A1 EP 87100412 A EP87100412 A EP 87100412A EP 87100412 A EP87100412 A EP 87100412A EP 0231775 A1 EP0231775 A1 EP 0231775A1
Authority
EP
European Patent Office
Prior art keywords
liquid
injection nozzle
side plate
ring
suction slot
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
EP87100412A
Other languages
German (de)
French (fr)
Other versions
EP0231775B1 (en
Inventor
Peter Dipl.-Ing. Trimborn
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT87100412T priority Critical patent/ATE43681T1/en
Publication of EP0231775A1 publication Critical patent/EP0231775A1/en
Application granted granted Critical
Publication of EP0231775B1 publication Critical patent/EP0231775B1/en
Expired 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
    • F04C19/004—Details concerning the operating liquid, e.g. nature, separation, cooling, cleaning, control of the supply

Definitions

  • the invention relates to a liquid ring machine according to the preamble of the claim.
  • the arrangement of injection nozzles in the inlet area in front of the relevant side plate is known, in which, regardless of the liquid level in the side plate, a certain amount of operating liquid is always supplied, which is based on the requirements of keeping the amount of the rotating liquid ring constant with pure gas delivery, so that in the case of mixed gas-liquid delivery, the constant addition of operating liquid results in an additional enlargement of the rotating liquid ring, which causes a correspondingly higher load on the liquid ring machine.
  • the invention has for its object to automatically throttle the operating fluid supplied by the injection nozzles with a certain pressure from a quantity required for pure gas production to a smaller quantity with mixed coloring, so that with increasing liquid content in the medium to be pumped operating fluid is saved, the increase in Liquid ring throttled practically to zero and a reduced sensitivity of the machine (pump) can be achieved.
  • an increased condensation effect is aimed for in the case of operational moist air extraction.
  • control disks instead of the control disks, frustoconical control arrangements with suction and passage openings can also be provided.
  • the side plate 1 according to FIGS. 2 and 3 has at the top inlets and outlets 2, 3 and possibly additional side inlets and outlets 2 ', 3', which each open into the same inlet area 2A (or outlet area), the Arranged on both sides of the shaft opening 4 and covered by the covering control arrangements shown in FIG. 1 in the form of control disks 12 with a suction slot 10 and pressure slot 11 against the housing 13 with a rotating paddle wheel 14.
  • an injection nozzle 7 is arranged above the minimum liquid level 8 in the case of pure gas production in the side plate 1, but below the maximum liquid level 9 in the case of mixed gas-liquid production.
  • the liquid can be fed to the injection nozzle 7 without pressure (only by the suction power of the pump).
  • the operating liquid supplied at a specific pressure to the injection nozzle 7 for cooling the machine, sealing the gaps and supplementing the rotating liquid ring with pure gas delivery can be supplied in maximum amount in the form of a liquid curtain in front of the suction slit 10, on the other hand when conveying mixed medium in the covered state Depending on the liquid level, flow throttled into the liquid in the side plate without forming a liquid curtain.

Abstract

In an inlet region or chamber of an end bell of a liquid-ring pump, an injection nozzle is provided for replenishing the liquid in the rotating ring of the machine.The injection nozzle is arranged in the vicinity of a suction slot provided in a control disc of the liquid-ring pump. The injection nozzle is disposed above a minimum liquid level extend when only gas is being transported by the pump and below a maximum liquid level extant when a mixture of both gas and working liquid is being pumped.

Description

Die Erfindung betrifft eine Flüssigkeitsringmaschine nach dem Oberbegriff des Patentanspruchs.The invention relates to a liquid ring machine according to the preamble of the claim.

Es ist die Anordnung von Einspritzdüsen im Einlaßbereich vor dem betreffenden Seitenschild bekannt, bei dem unab­hängig vom Flüssigkeitsniveau im Seitenschild stets eine bestimmte Menge an Betriebsflüssigkeit zugeführt wird, die bei reiner Gasförderung auf die Erfordernisse der Konstanthaltung der Menge des rotierenden Flüssigkeits­ringes abgestellt ist, so daß sich bei gemischter Gas-­Flüssigkeitsförderung durch die gleichbleibenden Be­triebsflüssigkeitszugabe eine zusätzliche Vergrößerung des rotierenden Flüssigkeitsringes ergibt, der eine ent­sprechend höhere Belastung der Flüssigkeitsringmaschine verursacht.The arrangement of injection nozzles in the inlet area in front of the relevant side plate is known, in which, regardless of the liquid level in the side plate, a certain amount of operating liquid is always supplied, which is based on the requirements of keeping the amount of the rotating liquid ring constant with pure gas delivery, so that in the case of mixed gas-liquid delivery, the constant addition of operating liquid results in an additional enlargement of the rotating liquid ring, which causes a correspondingly higher load on the liquid ring machine.

Der Erfindung liegt die Aufgabe zugrunde, die durch die Einspritzdüsen mit einem bestimmten Druck zugeführte Betriebsflüssigkeit von einer bei reiner Gasförderung erforderliche Menge selbsttätig auf eine geringere Menge bei gemischter Färderung zu drosseln, so daß mit zunehmendem Flüssigkeitsanteil im zu fördernden Medium Betriebsflüssigkeit eingespart, die Zunahme des Flüssig­keitsrings praktisch bis auf Null gedrosselt und eine verringerte Empfindlichkeit der Maschine (Pumpe) er­reicht werden kann. Bei betriebsmäßiger Feuchtluftab­saugung wird außerdem noch ein erhöhter Kondensations­effekt angestrebt.The invention has for its object to automatically throttle the operating fluid supplied by the injection nozzles with a certain pressure from a quantity required for pure gas production to a smaller quantity with mixed coloring, so that with increasing liquid content in the medium to be pumped operating fluid is saved, the increase in Liquid ring throttled practically to zero and a reduced sensitivity of the machine (pump) can be achieved. In addition, an increased condensation effect is aimed for in the case of operational moist air extraction.

Die Lösung der gestellten Aufgabe gelingt auf besonders einfache und überraschende Weise durch die kennzeich­nenden Maßnahmen im Patentanspruch.The problem is solved in a particularly simple and surprising manner by the characterizing measures in the claim.

Ein Ausführungsbeispiel der Erfindung ist in der Zeich­nung vereinfacht angedeutet und nachfolgend erläutert.An embodiment of the invention is indicated in simplified form in the drawing and explained below.

In der Zeichung ist eine Maschine mit Steuerscheibe, deren Einlaßschlitz in der betriebsmäßigen Lage ange­deutet ist, dargestellt und nachfolgend näher erläutert.
Es zeigt:

  • Fig. 1 eine doppelflutige Flüssigkeitsringmaschine mit Steuerscheibe in explodierter perspek­tivischer Schemadarstellung,
  • Fig. 2 den einen Seitenschild in Frontansicht von der Gehäuseseite aus und
  • Fig. 3 einen Längsschnitt nach der Linie II-II in Fig. 2.
In the drawing, a machine with a control disk, the inlet slot of which is indicated in the operational position, is shown and explained in more detail below.
It shows:
  • 1 is a double-flow liquid ring machine with control disk in an exploded perspective schematic representation,
  • Fig. 2 shows a side plate in front view from the housing side and
  • 3 shows a longitudinal section along the line II-II in FIG. 2.

An Stelle der Steuerscheiben können auch kegelstumpfför­mige Steueranordnungen mit Saug- und Durchlaßöffnungen vorgesehen sein.Instead of the control disks, frustoconical control arrangements with suction and passage openings can also be provided.

Der Seitenschild 1 nach Fig. 2 und 3 weist an der Ober­seite Ein- und Auslässe 2, 3 und gegebenenfalls zusätz­liche seitliche Ein- und Auslässe 2′, 3′ auf, die je­weils in dem gleichen Einlaßbereich 2A (bzw. Auslaßbe­reich) münden, die beiderseits der Wellenöffnung 4 ange­ordnet und von den in Fig. 1 gezeigten abdeckenden Steu­eranordnungen in Form von Steuerscheiben 12 mit Saug­schlitz 10 sowie Druckschlitz 11 abgedeckt sind gegen das Gehäuse 13 mit rotierendem Schaufelrad 14.The side plate 1 according to FIGS. 2 and 3 has at the top inlets and outlets 2, 3 and possibly additional side inlets and outlets 2 ', 3', which each open into the same inlet area 2A (or outlet area), the Arranged on both sides of the shaft opening 4 and covered by the covering control arrangements shown in FIG. 1 in the form of control disks 12 with a suction slot 10 and pressure slot 11 against the housing 13 with a rotating paddle wheel 14.

Mit 6 ist ein üblicher Flüssigkeitsrücklauf bzw. eine Entleerungsstelle bezeichnet. 5 sind die Füße des Seitenteils 1.With 6 is a normal liquid return or Designated emptying point. 5 are the feet of the side part 1.

Im Einlaßbereich 2A des Seitenschildes 1 ist in der Nähe des Saugschlitzes 10 eine Einspritzdüse 7 oberhalb des bei reiner Gasförderung sich ergebenden minimalen Flüssigkeitsniveaus 8 im Seitenschild 1, aber unterhalb des sich bei gemischter Gas-Flüssigkeitsförderung er­gebenden maximalen Flüssigkeitsniveau 9 angeordnet. Der Einspritzdüse 7 kann die Flüssigkeit drucklos (nur durch die Saugkraft der Pumpe) zugeführt werden.In the inlet area 2A of the side plate 1, in the vicinity of the suction slot 10, an injection nozzle 7 is arranged above the minimum liquid level 8 in the case of pure gas production in the side plate 1, but below the maximum liquid level 9 in the case of mixed gas-liquid production. The liquid can be fed to the injection nozzle 7 without pressure (only by the suction power of the pump).

Dadurch kann die mit bestimmtem Druck der Einspritzdüse 7 zugeführte Betriebsflüssigkeit zur Kühlung der Ma­schine, Abdichtung der Spalte und Ergänzung des rotie­renden Flüssigkeitsringes bei reiner Gasförderung in maximaler Menge in Form eines Flüssigkeitsvorhanges vor dem Saugschlitz 10 zugeführt werden, dagegen bei Förderung von gemischtem Medium im abgedeckten Zustand abhängig von Flüssigkeitsniveau gedrosselt in die Flüssigkeit im Seitenschild einströmen ohne Bildung eines Flüssigkeitsvorhanges.As a result, the operating liquid supplied at a specific pressure to the injection nozzle 7 for cooling the machine, sealing the gaps and supplementing the rotating liquid ring with pure gas delivery can be supplied in maximum amount in the form of a liquid curtain in front of the suction slit 10, on the other hand when conveying mixed medium in the covered state Depending on the liquid level, flow throttled into the liquid in the side plate without forming a liquid curtain.

Es ergibt sich daher eine selbsttätige Mengenregelung der Betriebsflüssigkeitszufuhr (möglicherweise mit Ventil) sowie eine Änderung in der Art der Flüssig­keitszufuhr.There is therefore an automatic quantity control of the operating liquid supply (possibly with a valve) and a change in the type of liquid supply.

Claims (1)

Flüssigkeitsringmaschine für die Förderung eines aus wechselnden Anteilen von Gas ung Flüssigkeit zusammen­gesetzten Mediums mit einem stirnseitig abgedeckten Gehäuse für ein darin außermittig drehbar angeordnetes Schaufelrad, das umfangsseitig in einen im Gehäuse rotierenden Flüssigkeitsring eintaucht, mit das Gehäuse beidseitig bedeckenden, die Schaufelradwelle tragenden Seitenschilden, von denen mindestens einer Ein- und Auslässe für das zu fördernde Medium aufweist, das über den jeweiligen Einlaß und einen zugeordneten Saugschlitz in der betreffenden Steueranordnung in das Gehäuse ge­langt und aus diesem über einen Druckschlitz in den Auslaß gelangt, wobei im Einlaßbereich des betreffenden Seitenschildes mindestens eine Einspritzdüse vorgesehen ist für die Zuführung von unter einem bestimmten Druck stehende zumindest teilweise den Flüssigkeitsring ergänzender Druckflüssigkeit,
dadurch gekennzeichnet,
daß die Einspritzdüse (7) innerhalb des Seitenschildes (1) in der Nähe des Saugschlitzes (10) der zugeordneten Steueranordnung mindestens in der Höhe des sich bei reiner Gasförderung einstellenden minimalen Flüssigkeits­niveaus (8) aber unterhalb des sich bei gemischter Gas-­Flüssigkeitsförderung ergebenden maximalen Flüssigkeits­niveaus (9) im Seitenschild (1) angeordnet ist, so daß die aus der unbedeckten Einspritzdüse (7) austretende Flüssigkeit einen vom Medium zu druchdringenden Flüssig­keitsvorhang vor dem Saugschlitz (10) bildet.Liquid ring machine for the conveyance of a medium composed of changing proportions of gas and liquid, with a housing covered on the end face for a paddle wheel rotatably arranged eccentrically therein, which is circumferentially immersed in a rotating liquid ring in the housing, with side shields covering the casing on both sides and supporting the paddle wheel shaft, of which Has at least one inlet and outlet for the medium to be conveyed, which enters the housing via the respective inlet and an associated suction slot in the relevant control arrangement and from which it reaches the outlet via a pressure slot, with at least one injection nozzle in the inlet region of the relevant side plate it is provided for the supply of pressurized fluid which at least partially complements the fluid ring and is under a certain pressure,
characterized by
that the injection nozzle (7) within the side plate (1) in the vicinity of the suction slot (10) of the associated control arrangement at least at the level of the minimum liquid level (8) which arises in the case of pure gas production but below the maximum liquid level which results in the case of mixed gas-liquid production (9) is arranged in the side plate (1), so that the liquid emerging from the uncovered injection nozzle (7) forms a liquid curtain to be penetrated by the medium in front of the suction slot (10).
EP87100412A 1986-01-27 1987-01-14 Liquid ring machine Expired EP0231775B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87100412T ATE43681T1 (en) 1986-01-27 1987-01-14 LIQUID RING MACHINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3602339 1986-01-27
DE3602339 1986-01-27

Publications (2)

Publication Number Publication Date
EP0231775A1 true EP0231775A1 (en) 1987-08-12
EP0231775B1 EP0231775B1 (en) 1989-05-31

Family

ID=6292686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87100412A Expired EP0231775B1 (en) 1986-01-27 1987-01-14 Liquid ring machine

Country Status (4)

Country Link
US (1) US4756672A (en)
EP (1) EP0231775B1 (en)
AT (1) ATE43681T1 (en)
DE (1) DE3760205D1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0759506A1 (en) * 1995-08-21 1997-02-26 Siemens Aktiengesellschaft Liquid ring compressor
CN1079503C (en) * 1995-08-16 2002-02-20 西门子公司 Ring liquid compression engine

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5060759A (en) * 1990-04-13 1991-10-29 Sundstrand Corporation Compressor oil supply system
US6106239A (en) * 1997-11-14 2000-08-22 Vooner Vacuum Pumps, Inc. Air flow apparatus for liquid ring vacuum pump
US6641369B2 (en) * 1999-05-19 2003-11-04 Robuschi & C. S.P.A. Liquid ring compressor with thin distribution plate
DE102005043434A1 (en) * 2005-09-13 2007-03-15 Gardner Denver Elmo Technology Gmbh Device for adjusting the capacity of a liquid ring pump
US9689387B2 (en) * 2012-10-30 2017-06-27 Gardner Denver Nash, Llc Port plate of a flat sided liquid ring pump having a gas scavenge passage therein
GB2571970B (en) * 2018-03-14 2020-09-16 Edwards Tech Vacuum Engineering (Qingdao) Co Ltd A liquid ring pump manifold with integrated non-return valve
GB2571969B (en) * 2018-03-14 2020-10-07 Edwards Tech Vacuum Engineering Qingdao Co Ltd A liquid ring pump manifold with an integrated spray nozzle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191319480A (en) * 1906-09-19 1913-10-30 Siemens Brothers Dynamo Works Improvements in or relating to Centrifugal Pumps.
GB254564A (en) * 1925-09-19 1926-07-08 Willis Haviland Carrier Method of and apparatus for compressing and otherwise treating fluids
US2124185A (en) * 1936-08-24 1938-07-19 Int Harvester Co Pump
FR884707A (en) * 1942-08-03 1943-08-25 Compteurs Et App D Utilisation Automatic evaporation and various losses compensator, for liquid ring pumps

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1310584A (en) * 1919-07-22 Rotary ptjmp
US1662250A (en) * 1926-06-11 1928-03-13 Irving C Jennings Method and apparatus relating to motor-driven pumps
US2195174A (en) * 1935-12-30 1940-03-26 Irving C Jennings Pump
US2230405A (en) * 1938-04-20 1941-02-04 Irving C Jennings Pumping system
US3032258A (en) * 1958-09-04 1962-05-01 Nash Engineering Co Vacuum pumps
US3043498A (en) * 1959-12-29 1962-07-10 Gabbioneta Roberto Rotary liquid ring pump with means for regulating the loading of liquid in the ring
GB1284473A (en) * 1969-04-26 1972-08-09 Siemens Ag Improvements in or relating to liquid ring pumps
DE3124867C2 (en) * 1981-06-24 1983-11-17 Siemens AG, 1000 Berlin und 8000 München Liquid ring vacuum pump for gaseous media
DE3425616A1 (en) * 1984-07-12 1986-01-23 Loewe Pumpenfabrik GmbH, 2120 Lüneburg ARRANGEMENT TO MINIMIZE COOLANT CONSUMPTION IN PARTICULAR. FOR LIQUID RING VACUUM PUMPS OR THE LIKE.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191319480A (en) * 1906-09-19 1913-10-30 Siemens Brothers Dynamo Works Improvements in or relating to Centrifugal Pumps.
GB254564A (en) * 1925-09-19 1926-07-08 Willis Haviland Carrier Method of and apparatus for compressing and otherwise treating fluids
US2124185A (en) * 1936-08-24 1938-07-19 Int Harvester Co Pump
FR884707A (en) * 1942-08-03 1943-08-25 Compteurs Et App D Utilisation Automatic evaporation and various losses compensator, for liquid ring pumps

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1079503C (en) * 1995-08-16 2002-02-20 西门子公司 Ring liquid compression engine
EP0759506A1 (en) * 1995-08-21 1997-02-26 Siemens Aktiengesellschaft Liquid ring compressor
CN1071004C (en) * 1995-08-21 2001-09-12 西门子公司 Ring liquid compression engine

Also Published As

Publication number Publication date
ATE43681T1 (en) 1989-06-15
DE3760205D1 (en) 1989-07-06
US4756672A (en) 1988-07-12
EP0231775B1 (en) 1989-05-31

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