EP0138182B1 - Flüssigkeitsringpumpe - Google Patents

Flüssigkeitsringpumpe Download PDF

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Publication number
EP0138182B1
EP0138182B1 EP84112033A EP84112033A EP0138182B1 EP 0138182 B1 EP0138182 B1 EP 0138182B1 EP 84112033 A EP84112033 A EP 84112033A EP 84112033 A EP84112033 A EP 84112033A EP 0138182 B1 EP0138182 B1 EP 0138182B1
Authority
EP
European Patent Office
Prior art keywords
pressure
pump
liquid ring
ring pump
housing cover
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.)
Expired
Application number
EP84112033A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0138182A2 (de
EP0138182A3 (enrdf_load_stackoverflow
Inventor
Norbert Dipl.-Ing. Schmid
Siegfried Schönwald
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
Publication of EP0138182A2 publication Critical patent/EP0138182A2/de
Publication of EP0138182A3 publication Critical patent/EP0138182A3/xx
Application granted granted Critical
Publication of EP0138182B1 publication Critical patent/EP0138182B1/de
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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/122—Arrangements for supercharging the working space
    • 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/28—Safety arrangements; Monitoring

Definitions

  • the invention relates to a liquid ring pump according to the preamble of claim 1.
  • Such a liquid ring pump is known from DE-C-284674.
  • a tube is connected in the pressure chamber to an opening provided on the control disk, through which air can be introduced from the free atmosphere as ballast gas into the wheel cells under certain pressure conditions, so that a pressure corresponding to the atmospheric pressure is achieved at the pressure slot if possible. Since the gas to be pumped reaches a pressure exceeding the atmospheric pressure considerably before the pressure slot is reached even with a low vacuum at the intake port, part of the gas to be pumped and possibly also liquid would escape through the pipe. For this reason, an automatically acting check valve is installed in the pipe, which prevents such escape.
  • a liquid ring pump is known from EP-A-61 626, which has a control disk which is inserted separately into the pump housing.
  • a suction and a pressure slot are provided in this control disk for the entry and exit of the gas to be compressed. In the area of the pressure slot, further passages are formed on the control disk.
  • the invention has for its object to develop a liquid ring pump of the type described above so that it can be retrofitted with a separate pipeline without design changes and gas can be sucked in as ballast gas from the pump circuit via this pipeline.
  • the pipeline can be retrofitted as required, without the need for structural changes to the liquid ring pump.
  • gas and possibly also liquid can be expelled into the pump circuit via a pipeline arranged in this way.
  • gas is drawn in from the circuit via the pipeline and fed to the pump wheel as ballast gas.
  • the corresponding arrangement of the free end of the pipeline makes an active component (check valve) unnecessary in the event of overpressure.
  • a control disk 4 is inserted into the housing cover 1, which has a suction slot 5 and a pressure slot 6.
  • additional pressure openings 7 are provided in front of the pressure slot, which are covered by elastic tongues 8.
  • the elastic tongues 8 thus form valves for these additional pressure openings 7.
  • the elastic tongues 8 are supported by a catch plate 17 arranged above them, which is not shown in FIG. 1 for the sake of clarity.
  • a separate pipeline 9 is connected to one of the pressure openings 7 and is guided with its free end 10 into a liquid separator 13 connected downstream of the liquid ring pump.
  • the free end 10 of the pipeline 9 is arranged above the liquid level 14, so that ballast gas can flow into the pump chamber via the pipeline 9 under appropriate pressure conditions at the liquid ring pump.
  • gas and possibly also liquid can in turn be ejected via the pipeline 9 into the liquid separator 13. Since the attachment of the pipeline 9 does not require any structural changes apart from a possible shortening of the elastic tongue 8 assigned to the corresponding pressure opening 7, the pipeline 9 can also be attached at any time even with already installed liquid ring pumps.
  • FIGS. 2 and 3 show, in particular, a possibility of connecting the pipeline 9 to the pressure opening 7.
  • a nipple 15 is inserted, which has a pipe extension 16 onto which the pipeline 9 is attached.
  • the nipple 15 is clamped under the catch plate 17 provided for the elastic tongues 8.
  • the nipple 15 can therefore not be pressed out of the pressure opening 7.
  • the separating web 18 formed on the housing cover 1 can also be seen, by means of which the suction space 19 provided in the housing cover is separated from the pressure space 20 also provided in the housing cover.
  • a bushing 21 is mounted on the housing cover 1 and has on the inside of the housing cover 1 an extension designed as a tube piece 22, the end 23 of which is inserted into a pressure opening 7 of the control disk 4.
  • the pipe 9 is plugged onto the end 24 of the bushing 21 located on the outside of the housing cover 1. From here, the pipeline 9 is then guided to a point above the liquid level 14. Because of this external connection point for the pipeline 9, it can be laid in a simple manner outside the pump and the pipes, which means that installation is considerably easier, in particular when retrofitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Mechanical Sealing (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
EP84112033A 1983-10-18 1984-10-08 Flüssigkeitsringpumpe Expired EP0138182B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833337837 DE3337837A1 (de) 1983-10-18 1983-10-18 Fluessigkeitsringpumpe
DE3337837 1983-10-18

Publications (3)

Publication Number Publication Date
EP0138182A2 EP0138182A2 (de) 1985-04-24
EP0138182A3 EP0138182A3 (enrdf_load_stackoverflow) 1985-06-19
EP0138182B1 true EP0138182B1 (de) 1988-03-09

Family

ID=6212123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112033A Expired EP0138182B1 (de) 1983-10-18 1984-10-08 Flüssigkeitsringpumpe

Country Status (5)

Country Link
US (2) US4565498A (enrdf_load_stackoverflow)
EP (1) EP0138182B1 (enrdf_load_stackoverflow)
JP (1) JPS60108583A (enrdf_load_stackoverflow)
AU (1) AU562688B2 (enrdf_load_stackoverflow)
DE (2) DE3337837A1 (enrdf_load_stackoverflow)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3436022A1 (de) * 1984-10-01 1986-04-03 Sihi Gmbh & Co Kg, 2210 Itzehoe Fluessigkeitsring-verdichter
FI882712A7 (fi) * 1988-06-08 1989-12-09 Pentamo Oy Vaetskeringkompressor.
DE3867068D1 (de) * 1988-11-07 1992-01-30 Siemens Ag Fluessigkeitsringpumpe.
DE3935247C2 (de) * 1988-11-07 1994-08-11 Siemens Ag Flüssigkeitsringpumpe
US5060759A (en) * 1990-04-13 1991-10-29 Sundstrand Corporation Compressor oil supply system
DE9106151U1 (de) * 1991-05-17 1992-09-17 Siemens AG, 8000 München Flüssigkeitsringpumpe
US5356268A (en) * 1993-09-29 1994-10-18 The Nash Engineering Company Check valve structures for liquid ring pumps
DE10040235C2 (de) * 2000-08-17 2003-04-24 Siemens Ag Flüssigkeitsringpumpe
SE519641C2 (sv) * 2001-08-08 2003-03-25 Metso Paper Inc Kombinerad centrifugal- och vakuumpump för pumpning av massa
KR20100128926A (ko) * 2009-05-29 2010-12-08 두산중공업 주식회사 극저온 액냉매 공급용 펌프
WO2010151405A1 (en) * 2009-06-26 2010-12-29 Gardner Denver Nash, Llc Method of converting liquid ring pumps having sealing liquid vents
US9267504B2 (en) 2010-08-30 2016-02-23 Hicor Technologies, Inc. Compressor with liquid injection cooling
EP2612035A2 (en) 2010-08-30 2013-07-10 Oscomp Systems Inc. Compressor with liquid injection cooling
US9541086B2 (en) * 2013-10-01 2017-01-10 Gardner Denver Nash Llc Liquid ring pump with modular construction, an inter-stage bypass and overload protection
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
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE284674C (enrdf_load_stackoverflow) *
EP0061626A1 (de) * 1981-03-24 1982-10-06 Siemens Aktiengesellschaft Flüssigkeitsringpumpe mit einer zwischen einem Laufradgehäuse und einem mit Anschlussstutzen versehenen Deckel angeordneten Steuerscheibe

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE258483C (enrdf_load_stackoverflow) *
FR456214A (fr) * 1912-04-02 1913-08-20 Cie Generale D Electricite De Soufflerie ou pompe à roue à palettes, avec enveloppe excentrée et couronne liquide rotative formant joint
US1180613A (en) * 1913-03-19 1916-04-25 Siemens Schuckertwerke Gmbh Rotary pump.
US1418040A (en) * 1920-06-07 1922-05-30 Reuben N Trane Compressor or vacuum pump
US2256201A (en) * 1937-02-26 1941-09-16 Siemens Ag Refrigerating apparatus of the compression type
DE1098150B (de) * 1958-05-30 1961-01-26 Heraeus Gmbh W C Vakuumpumpe mit Gasballasteinrichtung
GB1284473A (en) * 1969-04-26 1972-08-09 Siemens Ag Improvements in or relating to liquid ring pumps
GB1317568A (en) * 1969-10-11 1973-05-23 Plessey Co Ltd Liquid ring pumps
DE2036295C3 (de) * 1970-07-22 1975-09-18 Siemen & Hinsch Gmbh Flüssigkeitsringverdichter
DE2401177A1 (de) * 1974-01-11 1975-07-24 Pfeiffer Vakuumtechnik Vorrichtung zur geraeuschdaempfung bei drehschieberpumpen
SU779643A1 (ru) * 1975-12-30 1980-11-15 Предприятие П/Я В-2964 Компрессорна установка
US4083658A (en) * 1976-09-08 1978-04-11 Siemens Aktiengesellschaft Liquid ring compressor including a calibrated gas input opening
DE2704863A1 (de) * 1977-02-05 1978-08-10 Kloeckner Humboldt Deutz Ag Rueckschlagventil fuer eine fluessigkeitsring-gaspumpe
GB2064002A (en) * 1979-11-22 1981-06-10 Graham Precision Pumps Ltd Liquid Ring Vacuum Pumps
DE3124867C2 (de) * 1981-06-24 1983-11-17 Siemens AG, 1000 Berlin und 8000 München Flüssigkeitsring-Vakuumpumpe für gasförmige Medien

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE284674C (enrdf_load_stackoverflow) *
EP0061626A1 (de) * 1981-03-24 1982-10-06 Siemens Aktiengesellschaft Flüssigkeitsringpumpe mit einer zwischen einem Laufradgehäuse und einem mit Anschlussstutzen versehenen Deckel angeordneten Steuerscheibe

Also Published As

Publication number Publication date
US4565498A (en) 1986-01-21
EP0138182A2 (de) 1985-04-24
DE3337837A1 (de) 1985-04-25
DE3469780D1 (en) 1988-04-14
AU3430084A (en) 1985-04-26
JPS60108583A (ja) 1985-06-14
EP0138182A3 (enrdf_load_stackoverflow) 1985-06-19
AU562688B2 (en) 1987-06-18
US4610602A (en) 1986-09-09

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