EP0680562B1 - Machine a anneau liquide - Google Patents

Machine a anneau liquide Download PDF

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Publication number
EP0680562B1
EP0680562B1 EP94904567A EP94904567A EP0680562B1 EP 0680562 B1 EP0680562 B1 EP 0680562B1 EP 94904567 A EP94904567 A EP 94904567A EP 94904567 A EP94904567 A EP 94904567A EP 0680562 B1 EP0680562 B1 EP 0680562B1
Authority
EP
European Patent Office
Prior art keywords
liquid
machine
liquid ring
discharge passage
operating
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 - Lifetime
Application number
EP94904567A
Other languages
German (de)
English (en)
Other versions
EP0680562A1 (fr
Inventor
Peter 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
Publication of EP0680562A1 publication Critical patent/EP0680562A1/fr
Application granted granted Critical
Publication of EP0680562B1 publication Critical patent/EP0680562B1/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
    • 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 claim 1 or 2.
  • Such a machine is known from DE-C-31 24 867. It is typical of this type of machine that the energy is transferred from the impeller to the pumped medium via a liquid ring formed from operating liquid. Since the operating fluid as an energy source and as a sealing element is in direct contact with the fluid, vapors are condensed, liquid and dirt particles are conveyed, hot gases are cooled and compression heat is absorbed by the operating fluid. If liquids are conveyed in the liquid ring, there is an increased power requirement and a deterioration in the running properties of the impeller, which can lead to accelerated wear of the impeller bearing.
  • a reduction in the power consumption and, at the same time, improved running properties with the conveyance of liquids is to be brought about in the known machine in that a relief passage which is separate from the pressure slot of the control disk is provided in the control body designed as a flat control disk. This discharge passage is covered by the rotating liquid ring when liquid is also conveyed. No further details on the function of the relief passage can be found in the cited patent.
  • a liquid ring pump is also known, in which a discharge opening is provided on the inner wall of the machine housing in the middle between the suction and pressure area of the machine.
  • This discharge opening opens into a line connected to the outer circumference of the machine housing.
  • This line runs up to the supply line for the operating fluid and is connected to it.
  • this line is provided with branches which open into sealing chambers formed in the side plates of the machine.
  • the arrangement of the discharge opening on the inner wall of the machine housing ensures that this opening is always swept by the operating fluid during operation and thus operating fluid is constantly drained through the discharge opening into the connected line.
  • This drained liquid which is under a certain pressure, is introduced via the branches into the sealing chambers and is used there to seal the gaps between the impeller and the machine housing. An excess amount of liquid not required for sealing is fed back into the supply line for the operating liquid as a result of the line being connected to the supply line.
  • the object of the invention is to provide a liquid ring machine in which the total amount of liquid resulting from the usual operating liquid and the additional liquid resulting from the respective process can be kept as constant as possible, so that an approximately uniform liquid ring thickness can be achieved.
  • a further solution to the problem is also achieved in accordance with the features of claim 2.
  • the increased amount of liquid as the liquid ring thickness increases is discharged outside the machine.
  • An increased liquid conveyance results in increased pressure conditions in the pressure range, so that an increased liquid outlet is brought about by the relief passage of the liquid ring machine. The pressure conditions that arise thus automatically regulate the liquid ring thickness.
  • connection between the relief passage and the operating fluid supply line, which runs outside the housing offers advantages in terms of accessibility and the cooling effect which can be achieved, whereas a connection located inside the housing has a compact design leads.
  • the connection can be provided either in the housing or outside the housing. The connection can thus be adapted to the respective operating and installation conditions.
  • connection between the relief passage and the operating fluid supply line is integrated in the side plate, there is no additional manufacturing effort for this connection.
  • passages and bores in the pressurized machine housing are eliminated, which can lead to a reduction in the strength of the machine housing.
  • Another advantage of this connection is that the excess operating fluid can flow off over a short connection path without further energy expenditure.
  • a control element controls the supply of the operating liquid as a function of the quantity of liquid flowing through the relief passage.
  • Hydraulic valves in particular ball valves or plate valves, are suitable as control elements.
  • Valves of this type are passive elements which control the supply of operating fluid without further control elements, solely on the basis of the pressure conditions which arise.
  • valves are accessible from the outside in their installed position, the valves can be adjusted according to the operating conditions. This also facilitates any maintenance work, for example due to operational pollution.
  • only one valve for controlling the liquid ring thickness is required.
  • the positioning of the valve causes the valve to release the connection leading to the relief passage to the extent that it simultaneously restricts the supply of operating fluid.
  • the liquid flowing out through the relief passage now supplements the operating liquid exactly by the proportion by which it has been reduced.
  • the liquid carried in the liquid ring therefore also leads to a reduction in the operating liquid requirement.
  • the machine can even be fed solely from the liquid flowing out through the relief passage.
  • the valve is fully open and at the same time largely prevents the supply of operating fluid.
  • connection between the relief passage and the operating fluid supply line does not require any significant additional manufacturing outlay, since the connection is made via at least one line channel provided in the side plate, which is already taken into account when casting the side plate.
  • the glands used to seal the shaft must be cooled due to the frictional load.
  • the liquid flowing out through the relief passage can, if a corresponding connection is provided, also be provided to relieve the stuffing box supply. In this way, the cooling of the stuffing boxes can be carried out entirely or additively by the liquid flowing out of the relief passage.
  • the path of a conveyed medium from a suction port 3 of the liquid ring machine 1 via its side plate 4 and the suction slot 5 of a control body embodied here as a flat control disk 6 in one of two blades 7 of the impeller is shown with bold arrows 2 8 and a co-rotating fluid ring marked impeller cell space. Due to the eccentric position of the impeller 8, the impeller cell space changes its size continuously during one revolution of the impeller 8. As a result of the reduction in the impeller cell space in the pressure-side control disc area 15, the pumped medium is compressed and pushed out via a pressure slot 9 in the control disc 6. The pumped medium compressed in this way then flows out through a pressure connection 10.
  • operating fluid 11 must be continuously supplied via an operating fluid supply line.
  • the operating fluid reaches the suction-side control disk area 14 of the liquid ring machine 1 via a channel system in the hub area 12 and corresponding passages 13 in the control disk 6.
  • the excess operating liquid 20 is pushed out through a relief passage 16 located in the pressure-side control disc area 15 and is fed via a connecting line 17, which is integrated in the side plate 4, to the operating liquid supply line 11 also located in the side plate 4.
  • a connecting line 17 which is integrated in the side plate 4
  • This avoids an increase in the liquid ring thickness and thus any over-compression of the pumped medium.
  • This also eliminates other disadvantages already mentioned, such as increased energy consumption and impaired running smoothness.
  • the ball valve 18 is closed.
  • the ball 22 of the ball valve 18 closes, under the influence of a spring 23, the connecting line 17 leading away from the relief passage.
  • the ball 22 is pressed into the mouth by the spring 23, which is supported on the wall opposite the opening of the connecting line 17.
  • the ball valve 18 does not impede the entry of operating fluid from outside the machine 1, for example from a storage container (not shown in the drawing).
  • FIG 4 finally shows the case of a strong suction-side liquid conveyance.
  • the ball valve 18 is fully open.
  • the excess fluid 20 flowing out through the relief passage 16 flows almost unhindered into the operating fluid supply line 11 and / or into the operating fluid reservoir outside the fluid ring machine 1. No more operating fluid 21 is sucked in.
  • the process water supply is carried out solely from the liquid to be conveyed that is produced on the suction side.
  • FIGS. 5-7 A control with a plate valve 19 analogous to the control with a ball valve 18 is shown in FIGS. 5-7.
  • 5 shows a closed plate valve 19 for the operating case without liquid-side conveyance on the suction side.
  • the connecting line 17 is closed, whereas the supply of operating fluid is unimpeded.
  • 6, the plate valve 19 is partially open.
  • the portion of the self-sucked-in operating liquid 21 is reduced in favor of the excess liquid 20 flowing out of the relief passage 16 due to the narrowing of the cross-section in the operating liquid supply line 11.
  • the amount of operating fluid supplied in the hub area 12 thus does not change, so that the liquid ring thickness remains almost constant despite the liquid being conveyed.
  • the plate valve 19 is fully open.
  • the excess liquid 20, which flows out of the connecting line 17, serves for the exclusive supply of operating liquid to the liquid ring machine 1.
  • a quantity of liquid which exceeds the requirement for operating liquid can be discharged into a storage container located outside the liquid ring machine 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Abstract

Lorsque des liquides sont refoulés dans l'anneau d'une machine à anneau liquide (1), il se produit un accroissement de la puissance requise et une altération des caractéristiques de roulement de la roue à aubes (8). L'invention a pour objet une machine à anneau liquide (1) pour l'entraînement sélectif des liquides, comprenant un carter (3) entourant excentriquement une roue à aubes (8) et qui est fermé sur la face d'extrémité par des boucliers latéraux (4) pour l'arbre de la roue à aubes. Au moins un organe de commande muni d'une rainure d'aspiration et de refoulement (9) est associé à la roue à aubes (8), cet organe de commande présentant en plus de la rainure de refoulement (9), un passage de décharge (16) situé dans la zone de refoulement. Une épaisseur d'anneau liquide sensiblement constante est obtenue grâce au fait que le passage de décharge (16) est relié directement à l'amenée de liquide de fonctionnement de la machine à anneau liquide, de telle sorte que le liquide en excès (20) sortant du passage de décharge est amené directtement au liquide de fonctionnement (21).

Claims (10)

  1. Machine (1) à anneau liquide destinée à véhiculer facultativement des liquides, comportant un corps de machine entourant une roue (8) de façon excentrée, qui est fermé du côté frontal par des flasques latéraux (4) pour l'arbre de la roue, et dans laquelle machine (1) au moins un élément de commande (6) muni d'une fente d'aspiration et de refoulement (8, 9) est associé à la roue (8) à aubes, cet élément de commande comportant, outre la fente de refoulement (9), au moins un passage de décharge (16) supplémentaire dans sa zone (15) située du côté refoulement,
       caractérisée par le fait que,
       le passage de décharge (16) communique directement avec la conduite d'alimentation (11) en liquide de fonctionnement de la machine (1) à anneau liquide, et que le liquide excédentaire (20) sortant du passage de décharge (16) est envoyé directement au liquide de fonctionnement (21).
  2. Machine (1) à anneau liquide destinée à l'entraînement facultatif de liquides, comportant un corps de machine entourant une roue (8) à aubes de façon excentrée, qui est fermé du côté frontal par des flasques latéraux (4) pour l'arbre de la roue, dans laquelle machine (1) au moins un élément de commande (6) muni d'une fente d'aspiration et de refoulement (8, 9) est associé à la roue (8) à aubes, cet élément de commande comportant, outre la fente de refoulement (9), au moins un passage de décharge (16) supplémentaire dans sa zone (15) située du côté refoulement,
       caractérisée par le fait que,
       le passage de décharge (16) communique avec une conduite d'évacuation fermée, qui débouche à l'extérieur du corps de la machine.
  3. Machine à anneau liquide selon la revendication 1,
       caractérisée par le fait que,
       la communication entre le passage de décharge (16) et la conduite d'alimentation (11) du liquide de fonctionnement est prévue soit dans le corps, soit à l'extérieur du corps.
  4. Machine (1) à anneau liquide selon la revendication 3,
       caractérisée par le fait que,
       la communication entre le passage de décharge (16) et la conduite d'alimentation (11) du liquide de fonctionnement est intégrée dans le flasque latéral (4).
  5. Machine (1) à anneau liquide selon l'une ou plusieurs des revendications précédentes,
       caractérisée par le fait que,
       il est prévu un élément de commande qui régule la quantité de liquide de fonctionnement (21) amené en fonction de la quantité de liquide qui passe dans le passage de décharge (16).
  6. Machine (1) à anneau liquide selon la revendication 5,
       caractérisée par le fait que,
       il est prévu une soupape hydraulique ou une soupape (18) à bille ou une soupape (19) à plateau.
  7. Machine (1) à anneau liquide selon la revendication 5 et/ou 6,
       caractérisée par le fait que,
       la soupape est accessible de l'extérieur à l'état monté.
  8. Machine (1) à anneau liquide selon l'une ou plusieurs des revendications 5 à 7,
       caractérisée par le fait que,
       la soupape concernée est montée à l'emplacement où la communication venant du passage de décharge débouche dans la conduite d'alimentation (11) du liquide de fonctionnement de telle sorte que la soupape influence simultanément la résistance à l'écoulement des deux trajets du liquide.
  9. Machine (1) à anneau liquide selon l'une ou plusieurs des revendications précédentes,
       caractérisée par le fait que,
       la communication entre le passage de décharge (16) et la conduite d'alimentation (11) du liquide de fonctionnement est effectuée par l'intermédiaire d'au moins un canal de conduite prévu dans le flasque latéral (4).
  10. Machine (1) à anneau liquide selon l'une ou plusieurs des revendications précédentes,
       caractérisée par le fait que,
       on prévoit une communication supplémentaire entre le passage de décharge (16) et des presse-étoupe se trouvant dans le flasque (4).
EP94904567A 1993-01-25 1994-01-11 Machine a anneau liquide Expired - Lifetime EP0680562B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4301907 1993-01-25
DE4301907A DE4301907A1 (de) 1993-01-25 1993-01-25 Flüssigkeitsringmaschine
PCT/DE1994/000021 WO1994017309A1 (fr) 1993-01-25 1994-01-11 Machine a anneau liquide

Publications (2)

Publication Number Publication Date
EP0680562A1 EP0680562A1 (fr) 1995-11-08
EP0680562B1 true EP0680562B1 (fr) 1997-04-02

Family

ID=6478858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94904567A Expired - Lifetime EP0680562B1 (fr) 1993-01-25 1994-01-11 Machine a anneau liquide

Country Status (8)

Country Link
US (1) US5605445A (fr)
EP (1) EP0680562B1 (fr)
JP (1) JPH08505679A (fr)
BR (1) BR9406221A (fr)
CA (1) CA2154476A1 (fr)
DE (2) DE4301907A1 (fr)
FI (1) FI953540A0 (fr)
WO (1) WO1994017309A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19758340A1 (de) * 1997-12-22 1999-07-08 Gardner Denver Wittig Gmbh Mehrflutige Flüssigkeitsringpumpe
DE19819538C2 (de) 1998-04-30 2000-02-17 Rietschle Werner Gmbh & Co Kg Druck-Saug-Pumpe
DE20016016U1 (de) * 2000-09-15 2002-01-31 Speck-Pumpenfabrik Walter Speck GmbH & Co. KG, 91154 Roth Steuerdeckel für eine Flüssigkeitsringpumpe und mit derartigem Steuerdeckel versehene Pumpe
US20040202549A1 (en) * 2003-01-17 2004-10-14 Barton Russell H. Liquid ring pump
GB0321455D0 (en) * 2003-09-12 2003-10-15 Aesseal Plc Self regulating re-circulation system for use with vacuum pumps
WO2006059577A1 (fr) * 2004-12-01 2006-06-08 Nippon Sheet Glass Company, Limited Appareil de fabrication de verre et procédé de fabrication de verre
DE102005043434A1 (de) * 2005-09-13 2007-03-15 Gardner Denver Elmo Technology Gmbh Einrichtung zur Leistungsanpassung einer Flüssigkeitsringpumpe
EP1855010B1 (fr) * 2006-05-11 2008-08-13 Pompetravaini S.p.A. Pompe à vide à anneau liquide monoétagée avec tubulures d'aspiration et de refoulement intégrées au corps central.
JP5715571B2 (ja) 2008-12-18 2015-05-07 ガードナー デンヴァー ナッシュ エルエルシーＧａｒｄｎｅｒ Ｄｅｎｖｅｒ Ｎａｓｈ Ｌｌｃ ガス排気装置を備えた液封式ポンプ
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
CN114810597B (zh) * 2022-05-11 2023-02-03 广东锦坤实业有限公司 一种脂肪酸加工的高效冰冻真空系统

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1904321A (en) * 1931-06-01 1933-04-18 Nash Engineering Co Hydroturbine pumping apparatus
DE675378C (de) * 1936-02-29 1939-05-06 Nash Engineering Co Fluessigkeitsringpumpe
BE664205A (fr) * 1964-05-20
GB1509661A (en) * 1976-02-11 1978-05-04 Grayden Pty Ltd P Water ring vacuum pumps
DE3124867C2 (de) * 1981-06-24 1983-11-17 Siemens AG, 1000 Berlin und 8000 München Flüssigkeitsring-Vakuumpumpe für gasförmige Medien
DE3617344A1 (de) * 1986-05-23 1987-11-26 Siemens Ag Verfahren zur herstellung einer steuerscheibe bzw. eines steuerschildes fuer eine fluessigkeitsringmaschine fuer aggressivere medien

Also Published As

Publication number Publication date
DE59402303D1 (de) 1997-05-07
WO1994017309A1 (fr) 1994-08-04
EP0680562A1 (fr) 1995-11-08
DE4301907A1 (de) 1994-07-28
BR9406221A (pt) 1996-01-09
JPH08505679A (ja) 1996-06-18
FI953540A (fi) 1995-07-24
CA2154476A1 (fr) 1994-08-04
FI953540A0 (fi) 1995-07-24
US5605445A (en) 1997-02-25

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