EP0959251B1 - Drehzahnverdichter und Verfahren zum Betrieb eines solchen - Google Patents
Drehzahnverdichter und Verfahren zum Betrieb eines solchen Download PDFInfo
- 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
Links
Images
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.
Description
- Fig.1
- einen Längsschnitt durch einen Drehzahnverdichter nach der Erfindung,
- Fig.2
- eine Prinzipskizze, welche im Schnitt die Anordnung und Gestaltung der Wellendichtringe des Drehzahnverdichters und ihre Druckmittelversorgung sowie eine gegenüber Figur 1 geänderte Gasbeaufschlagung zeigt.
- 1
- Gehäuse
- 2
- Förderraum
- 3
- Rotor
- 4
- Rotor
- 5
- Pumpenwelle
- 6
- Pumpenwelle
- 7
- neutraler Raum
- 8
- neutraler Raum
- 9
- Druckmittelanschluss
- 10
- Druckmittelanschluss
- 11
- Getrieberaum
- 12
- Druckmittelanschluss
- 13
- Getriebe
- 14
- Motor
- 15
- Stehlagerraum
- 16
- Stehlagerraum
- 17
- Labyrinthabdichtung
- 18
- Labyrinthabdichtung
- 19
- Labyrinthabdichtung
- 20
- Labyrinthabdichtung
- 21
- Wellendichtring
- 22
- Wellendichtring
- 23
- Wellendichtring
- 24
- Wellendichtring
- 25
- Wellendichtring
- 26
- Dichtlippe
- 27
- Dichtlippe
- 28
- Dichtlippe
- 29
- Leitung
- 30
- Druckmittelanschluss
- 31
- Spülgasquelle
- 32
- Überströmventil
Claims (7)
- Drehzahnverdichter mit einer einen Getrieberaum (11), einen neutralen Raum (7) und einen Förderraum (2) durchdringenden ersten Pumpenwelle (6) und einer hierzu parallelen zweiten Pumpenwelle (5), welche von dem Getrieberaum (11) durch den neutralen Raum (7) und den Förderraum (2) führt, wobei die beiden Pumpenwellen (5, 6) jeweils in dem Förderraum (2) einen Rotor (3, 4) aufweisen und wobei der Förderraum (2) zur Durchführung der beiden Pumpenwellen (5, 6) jeweils durch eine Labyrinthabdichtung (17, 18, 19, 20) gegenüber dem neutralen Raum (7, 8) abgedichtet ist, dadurch gekennzeichnet, dass der Getrieberaum (11) und der neutrale Raum (7) druckdicht ausgeführt und jeweils mit einem Druckmittelanschluss (9, 12) versehen sind, dass die beiden Pumpenwellen (5, 6) zwischen dem Förderraum (2) und dem Getrieberaum (11) und die aus dem Getrieberaum (11) nach außen herausführende Pumpenwelle (6) zwischen der Atmosphäre und dem Getrieberaum (11) jeweils durch einen Wellendichtring (24, 25) abgedichtet sind, welcher eine gegen die jeweilige Pumpenwelle (5, 6) anliegende, zum Förderraum (2) hin gerichtete Dichtlippe (27, 26) aufweist.
- Drehzahnverdichter nach Anspruch 1, bei dem die beiden Pumpenwellen (5, 6) an der dem Getrieberaum (11) gegenüberliegenden Seite des Förderraumes (2) jeweils in einem Stehlagerraum (16) gelagert sind, wobei zwischen dem Stehlagerraum (16) und dem Förderraum (2) ebenfalls ein neutraler Raum (8) vorgesehen ist, dadurch gekennzeichnet, dass der Stehlagerraum (15, 16) und der zwischen ihm und dem Förderraum (2) liegende neutrale Raum (8) druckdicht ausgeführt und jeweils mit einem Druckmittelanschluss (10, 30) versehen sind und dass jeder Stehlagerraum (15, 16) durch eine gegen die Pumpenwelle (5, 6) mit einer Dichtlippe anliegende Wellendichtring abgedichtet ist.
- Drehzahnverdichter nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, dass die beiden neutralen Räume (7, 8) jeweils mit der Saugseite des Drehzahnverdichters Verbindung haben.
- Verfahren zum Betrieb eines Drehzahnverdichters nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der getrieberaumseitige, neutrale Raum mit einem unter dem Druck im Förderraum liegenden Druck und der Getrieberaum mit einem unter dem Druck in den Förderräumen jedoch über dem Atmosphärendruck liegenden Druck beaufschlagt wird.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass auch der stehlagerraumseitige, neutrale Raum mit einem unter dem Druck im Förderraum liegenden Druck beaufschlagt wird.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass der Stehlagerraum und der ihn vom Förderraum trennende neutrale Raum an eine gemeinsame Druckmittelquelle angeschlossen sind.
- Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die neutralen Räume zur Druckbeaufschlagung mit einer Spülgasquelle verbunden sind und jeweils einen durch ein Überströmventil geregelten Spülgasauslass aufweisen.
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 (de) | 1999-11-24 |
EP0959251B1 true EP0959251B1 (de) | 2004-05-19 |
Family
ID=7868186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99109591A Expired - Lifetime EP0959251B1 (de) | 1998-05-18 | 1999-05-14 | Drehzahnverdichter und Verfahren zum Betrieb eines solchen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0959251B1 (de) |
AT (1) | ATE267346T1 (de) |
DE (2) | DE19822283A1 (de) |
Cited By (1)
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 (4)
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 |
EP1957798B1 (de) | 2005-12-08 | 2011-02-09 | GHH-RAND Schraubenkompressoren GmbH | Schraubenkompressor |
ITVI20130021A1 (it) * | 2013-01-31 | 2013-05-02 | Virgilio Mietto | Compressore volumetrico dotato di un sistema di lubrificazione migliorato. |
Family Cites Families (9)
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 | 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 |
-
1998
- 1998-05-18 DE DE19822283A patent/DE19822283A1/de not_active Withdrawn
-
1999
- 1999-05-14 AT AT99109591T patent/ATE267346T1/de not_active IP Right Cessation
- 1999-05-14 EP EP99109591A patent/EP0959251B1/de not_active Expired - Lifetime
- 1999-05-14 DE DE59909504T patent/DE59909504D1/de not_active Expired - Fee Related
Cited By (1)
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 |
---|---|
DE59909504D1 (de) | 2004-06-24 |
ATE267346T1 (de) | 2004-06-15 |
DE19822283A1 (de) | 1999-11-25 |
EP0959251A1 (de) | 1999-11-24 |
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