EP0959251B1 - Compresseur rotatif à engrenages et procédé pour son fonctionnement - Google Patents

Compresseur rotatif à engrenages et procédé pour son fonctionnement Download PDF

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Publication number
EP0959251B1
EP0959251B1 EP99109591A EP99109591A EP0959251B1 EP 0959251 B1 EP0959251 B1 EP 0959251B1 EP 99109591 A EP99109591 A EP 99109591A EP 99109591 A EP99109591 A EP 99109591A EP 0959251 B1 EP0959251 B1 EP 0959251B1
Authority
EP
European Patent Office
Prior art keywords
region
neutral
work
pressure
gear
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
EP99109591A
Other languages
German (de)
English (en)
Other versions
EP0959251A1 (fr
Inventor
Heinrich Dipl.-Ing. Amlinger
Herbert Roth
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.)
SGI-PROZESS-TECHNIK GmbH
Original Assignee
SGI-PROZESS-TECHNIK GmbH
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Filing date
Publication date
Application filed by SGI-PROZESS-TECHNIK GmbH filed Critical SGI-PROZESS-TECHNIK GmbH
Publication of EP0959251A1 publication Critical patent/EP0959251A1/fr
Application granted granted Critical
Publication of EP0959251B1 publication Critical patent/EP0959251B1/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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C27/009—Shaft sealings specially adapted for pumps

Definitions

  • the invention relates to a rotary tooth compressor with a a gear room, a neutral room and a production room penetrating first pump shaft and one parallel second pump shaft, which from the gear chamber through the neutral space and the funding area leads, the two pump shafts each in the delivery chamber have a rotor and wherein the delivery chamber to carry out the two pump shafts a labyrinth seal sealed off from the neutral room is.
  • the invention further relates to a method for operating such a rotary tooth compressor.
  • Such rotary tooth compressors are called dry running machines for the compression of gas by a pressure difference of 2 bar and are therefore known.
  • Pressures as 3 bar (a) are suitable for rotary tooth compressors not because it will result in undesirable excessive wear the seals are coming.
  • the well-known rotary tooth compressors e.g. at GB 559 226 A, have on both sides of the funding area a neutral space that is connected to the atmosphere.
  • Piston compressor For gas compression, especially of oxygen absolute pressures of 5 to 6 bar have so far been oil-free Piston compressor is used, which is very complex and are therefore expensive. Furthermore, they require a high one Service requirements, as every 6,000 to 8,000 operating hours the piston rings and valves replaced Need to become.
  • the invention is based on the problem of a rotary tooth compressor of the type mentioned at the beginning, that it has higher pressure differentials and higher absolute pressures than previously can compress without its seals subject to high wear. Furthermore should a method for operating such a rotary compressor be created.
  • the first-mentioned problem is solved by that the gearbox and the neutral room are pressure-tight executed and each with a pressure medium connection are provided that the two pump shafts between the delivery room and the gear box and those from the Transmission space leading out to the pump shaft between the atmosphere and the gearbox a shaft seal are sealed, which one against the respective pump shaft to the delivery chamber has facing sealing lip.
  • the speed compressor according to the invention enables it in one-step execution up to to 3 bar (a) and in two stages up to 5 compress reliably up to 6 bar (a). at the same time is ensured by the pressure-tight neutral space, that no process gas is leaked into the environment of the rotary compressor.
  • a neutral room With a rotary tooth compressor in which the two pump shafts on the side opposite the gearbox of the delivery room each stored in a pedestal storage room are, between the pillow block and the delivery room a neutral room is also provided, one can also a long life of the to be arranged there Achieve shaft sealing ring if according to a training the invention of the pedestal storage room and the one between it and the neutral room located in the delivery chamber is pressure-tight and each with a pressure medium connection and if each pillow block is countered by one the pump shaft with a shaft sealing ring in contact with a sealing lip is sealed.
  • the desired, reduced compared to the funding area Pressure in the neutral rooms is inevitable if the two neutral rooms each with the Have suction connection of the rotary compressor.
  • the second problem namely the creation of a Method for operating the rotary tooth compressor according to the invention, is solved according to the invention in that the gearbox-side, neutral room with an under the pressure in the delivery chamber and the gearbox with one under pressure in the production rooms, however pressure above atmospheric pressure becomes.
  • the rotary tooth compressor according to the invention optimal with regard to the life of the shaft sealing rings used. Due to the graduated pressurization at the same time ensured that no gas from the neutral Space can get into the funding room.
  • the rotary tooth compressor shown as a whole in FIG. 1 has in a housing 1 a delivery chamber 2, in which two rotors 3, 4 are arranged. Each of these rotors 3, 4 is arranged on a pump shaft 5, 6. To both The side of the delivery chamber 2 is a pressure-tight, neutral one Room 7, 8 provided, each with a pressure medium connection 9, 10 has. Seen in Figure 1 to the left of the neutral Room 7 is located in the housing 1, a gear room 11, which is also pressure-tight and one Has pressure medium connection 12. Located in gearbox 11 there is a gear 13, which the two pump shafts 5, 6 gears together. The pump shaft 6 leads out of the gear chamber 11 and is with a motor 14 flanged to the outside of the housing 1 connected.
  • the pump shafts 5, 6 penetrate with their respective right end the right, neutral room 8 and are each stored in a pedestal storage room 15, 16, which is hermetically sealed from the outside.
  • the pump shafts 5, 6 are between the delivery chamber 2 and the respective neutral room 8 each with a labyrinth seal 17, 18, 19, 20 sealed.
  • Shaft seals 21, 22 seal the plummer block 15, 16 compared to the neutral Room 8 onwards.
  • Corresponding shaft sealing rings 23, 24 seal the neutral space 7 with respect to the gear space 11 and a shaft seal 25 opposite the gear chamber 11 the atmosphere.
  • a purge gas source 31 enables the gear chamber 11 and defined the two neutral rooms 7, 8 with a purge gas To apply pressure.
  • This purge gas can the neutral spaces 7, 8 via an overflow valve 32 leave. This way you can go into the neutral Evacuate rooms 7, 8 penetrating process gas continuously.
  • FIG. 1 This shows compared to FIG. 1 greatly increases the shaft seals located on the pump shaft 6 22, 24, 25. All three shaft seals 22, 24, 25 have one against the pump shaft 6 Sealing lip 26, 27, 28.
  • the sealing lip 28 of the Shaft sealing ring 22 points away from the delivery chamber 2.
  • Figure 2 also shows that the pillow block 16 has a pressure medium connection 30 and this Pressure medium connection 30 through a line 29 to the Pressure medium connection 10 of the right neutral room 8 connected is. The left one is also connected to this line 29 neutral room 7 connected. She is connected to the Suction side of the machine stage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
  • Supercharger (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Claims (7)

  1. Compresseur rotatif à engrenages avec un premier carré de pompe (6) traversant un espace des engrenages (11), un espace neutre (7) et un espace de refoulement (2), et un deuxième carré de pompe (5) qui lui est parallèle et menant de l'espace des engrenages (11) en passant par l'espace neutre (7) et l'espace de refoulement (2), moyennant quoi les deux carrés de pompe (5, 6) présentent respectivement un rotor (3, 4) dans l'espace de refoulement (2), et moyennant quoi l'espace de refoulement (2) est rendu étanche par rapport à l'espace neutre (7, 8) grâce à respectivement une garniture d'étanchéité en labyrinthe (17, 18, 19, 20) pour faire passer les deux carrés de pompe (5, 6),
    caractérisé en ce que
    l'espace des engrenages (11) et l'espace neutre (7) sont réalisés de manière à conserver la pression et sont respectivement pourvus d'un raccordement de moyen de pression (9, 12), en ce que les deux carrés de pompe (5, 6) entre l'espace de refoulement (2) et l'espace des engrenages (11), et le carré de pompe (6) menant vers l'extérieur hors de l'espace des engrenages (11) entre l'atmosphère et l'espace des engrenages (11), sont respectivement rendus étanches grâce à une bague à lèvres avec ressort (24, 25) présentant une lèvre d'étanchéité (27, 26) reposant contre le carré de pompe (5, 6) respectif et orientée vers l'espace de refoulement (2).
  2. Compresseur rotatif à engrenages selon la revendication 1, pour lequel les deux carrés de pompe (5, 6) sont respectivement logés dans un espace du palier support (16) sur le côté de l'espace de refoulement (2) situé en face de l'espace des engrenages (11), un espace neutre (8) étant également prévu entre l'espace du palier support (16) et l'espace de refoulement (2),
    caractérisé en ce que
    l'espace du palier support (15, 16) et l'espace neutre (8) situé entre lui et l'espace de refoulement (2) sont réalisés de manière à conserver la pression et sont respectivement pourvus d'un raccordement de moyen de pression (10, 30), et en ce que chaque espace du palier support (15, 16) est rendu étanche grâce à une bague à lèvres avec ressort reposant contre le carré de pompe (5, 6) avec une lèvre d'étanchéité.
  3. Compresseur rotatif à engrenages selon l'une quelconque des revendications 1 ou 2,
    caractérisé en ce que
    les deux espaces neutres (7, 8) sont respectivement en liaison avec le côté d'aspiration du compresseur rotatif à engrenages.
  4. Procédé pour le fonctionnement d'un compresseur rotatif à engrenages selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'espace neutre du côté de l'espace des engrenages est pressurisé avec une pression inférieure à la pression dans l'espace de refoulement, et en ce que l'espace des engrenages est pressurisé avec une pression inférieure à la pression dans l'espace de refoulement, mais cependant plus élevée que la pression atmosphérique.
  5. Procédé selon la revendication 4,
    caractérisé en ce que
    l'espace neutre du côté de l'espace du palier support est également pressurisé avec une pression inférieure à la pression qui règne dans l'espace de refoulement.
  6. Procédé selon la revendication 5,
    caractérisé en ce que
    l'espace du palier support et l'espace neutre qui le sépare de l'espace de refoulement sont raccordés à une source de moyen de pression commune.
  7. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    les espaces neutres sont en liaison avec une source de gaz de balayage pour la pressurisation, et présentent respectivement une sortie pour le gaz de balayage régulée par une soupape de décharge.
EP99109591A 1998-05-18 1999-05-14 Compresseur rotatif à engrenages et procédé pour son fonctionnement Expired - Lifetime EP0959251B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19822283 1998-05-18
DE19822283A DE19822283A1 (de) 1998-05-18 1998-05-18 Drehzahnverdichter und Verfahren zum Betrieb eines solchen

Publications (2)

Publication Number Publication Date
EP0959251A1 EP0959251A1 (fr) 1999-11-24
EP0959251B1 true EP0959251B1 (fr) 2004-05-19

Family

ID=7868186

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99109591A Expired - Lifetime EP0959251B1 (fr) 1998-05-18 1999-05-14 Compresseur rotatif à engrenages et procédé pour son fonctionnement

Country Status (3)

Country Link
EP (1) EP0959251B1 (fr)
AT (1) ATE267346T1 (fr)
DE (2) DE19822283A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108138646A (zh) * 2015-08-25 2018-06-08 伊顿智能动力有限公司 用于增压器的高压转子密封构造

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4061850B2 (ja) * 2001-02-28 2008-03-19 株式会社豊田自動織機 真空ポンプにおける軸封構造
CN100400881C (zh) * 2002-08-23 2008-07-09 株式会社丰田自动织机 具有轴密封结构的真空泵
WO2007065484A1 (fr) 2005-12-08 2007-06-14 Ghh Rand Schraubenkompressoren Gmbh Compresseur à vis
ITVI20130021A1 (it) * 2013-01-31 2013-05-02 Virgilio Mietto Compressore volumetrico dotato di un sistema di lubrificazione migliorato.
FR3148459B1 (fr) * 2023-05-02 2025-04-25 Pfeiffer Vacuum Pompe à vide

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB559226A (en) * 1942-08-07 1944-02-09 Douglas Rudolf Pobjoy Improvements in and relating to rotary pumps
IT1155126B (it) * 1982-03-10 1987-01-21 Fiat Auto Spa Compressore volumetrico rotativo del tipo roots
US4755115A (en) * 1984-11-21 1988-07-05 Atsugi Motor Parts Company, Limited Shaft seal assembly for compressor
JPH05296171A (ja) * 1992-04-13 1993-11-09 Ulvac Japan Ltd 封液を用いない容積型真空ポンプの軸シール機構
DE4301293C2 (de) * 1993-01-15 1996-07-11 Mannesmann Ag Vorrichtung zum Entfernen kleiner Schmier- und Kühlflüssigkeitsleckagemengen
DE29506010U1 (de) * 1995-04-07 1996-08-08 Armatec FTS-Armaturen GmbH & Co KG, 88239 Wangen Drehkolbenpumpe
JP3493850B2 (ja) * 1995-11-22 2004-02-03 石川島播磨重工業株式会社 機械駆動式過給機のシール構造
DE19626515A1 (de) * 1996-07-02 1998-01-08 Ghh Borsig Turbomaschinen Gmbh Sperrflüssigkeitsabdichtung eines ölfreien Schraubenverdichters
DE19633651A1 (de) * 1996-08-21 1998-02-26 Leybold Vakuum Gmbh Trockene Vakuummaschine mit Wellendurchführung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108138646A (zh) * 2015-08-25 2018-06-08 伊顿智能动力有限公司 用于增压器的高压转子密封构造

Also Published As

Publication number Publication date
DE19822283A1 (de) 1999-11-25
DE59909504D1 (de) 2004-06-24
ATE267346T1 (de) 2004-06-15
EP0959251A1 (fr) 1999-11-24

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