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EP0736692A1 - Etanchéité, aménagement des paliers et entraînement des rotors d'un compresseur à vis tournant à sec - Google Patents

Etanchéité, aménagement des paliers et entraînement des rotors d'un compresseur à vis tournant à sec Download PDF

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Publication number
EP0736692A1
EP0736692A1 EP96101860A EP96101860A EP0736692A1 EP 0736692 A1 EP0736692 A1 EP 0736692A1 EP 96101860 A EP96101860 A EP 96101860A EP 96101860 A EP96101860 A EP 96101860A EP 0736692 A1 EP0736692 A1 EP 0736692A1
Authority
EP
European Patent Office
Prior art keywords
rotor
rotors
pressure
seals
suction
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
EP96101860A
Other languages
German (de)
English (en)
Other versions
EP0736692B1 (fr
Inventor
Manfred Dipl.-Ing. Heinen
Hans-Hermann Dipl.-Ing. Reinersmann
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.)
MAN Energy Solutions SE
Original Assignee
MAN Gutehoffnungshutte GmbH
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 MAN Gutehoffnungshutte GmbH filed Critical MAN Gutehoffnungshutte GmbH
Publication of EP0736692A1 publication Critical patent/EP0736692A1/fr
Application granted granted Critical
Publication of EP0736692B1 publication Critical patent/EP0736692B1/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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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
    • F04C2220/00—Application
    • F04C2220/10—Vacuum
    • F04C2220/12—Dry running

Definitions

  • the invention relates to a dry-running rotor compressor with meshing engagement between a screw-toothed rib rotor and a screw-toothed groove rotor, the suction-side and pressure-side bearing housings having pins which protrude into bores within the rotors and are provided with slide or roller bearings; with a through a bore in the suction or pressure side bearing housing and through one of the pins torsion shaft with a coupling half for the compressor drive, with seals arranged on the bearing housings and the rotors.
  • a screw rotor compressor as an inevitably conveying displacement machine, not only transports the conveyed medium from the suction to the pressure side, but also compresses it in this way by reducing the tooth space. If the rotors or rotors rotate in the housing, they disengage at the control edge on the suction side, so that a cross section and a volume open for suction. With further rotation, the rotors come back into engagement on their control edges. The cross section of the work space moving in the axial direction is reduced to the control edge on the pressure side of the housing, at which the compressed medium is pushed out.
  • Screw rotor compressors can be driven directly at the motor speed via an integrated or external gear.
  • Screw rotor compressors with small compression ratios in which the pumped medium must not be contaminated with a cooling liquid, are called dry-running screw rotor compressors or dry-running designated and require a differential gear to protect the distance between the rotor surfaces, which protects the rotors from contact.
  • the rotors of these screw rotor compressors have pins arranged on both sides, which are mounted in axial and radial bearings in the housing.
  • a disadvantage of this design is the high deflection of the rotors and the simultaneous occurrence of high torsional and bending stresses on the driven rotor journal.
  • the bearing journals are made as large as possible. The consequence of this is that the bearing diameter and the bearing spacing must also be chosen to be correspondingly large.
  • a screw rotor compressor with oil injection which has internal rotor bearings.
  • the journals for the main and secondary rotor are each part of the suction-side and the pressure-side bearing housing and therefore consist of the same material, for. B. Cast steel.
  • the pins protrude into the bores of the rotors, which are equipped with plain or roller bearings to support the pins.
  • the drive of the screw rotor compressor can be arranged on one of the suction or pressure-side rotor ends.
  • a torsion shaft is also possible, which is guided through a hole in the suction or pressure side bearing housing and into one of the four pins.
  • the compressor is driven by a coupling at the outer end of the torsion shaft.
  • sealing washers On the suction and pressure side housing parts, which are screwed, glued or positively inserted to these housing parts.
  • the sealing washers consist of a sintered PTFE-mica mixture or of a material with similar properties.
  • the invention has for its object to reduce the load on the driven journal even with a dry-running screw rotor compressor, to give the rotors overall greater rigidity and to create a screw rotor compressor with an extremely short design.
  • the screw rotor compressor has internal rotor bearings.
  • the journals for the main and secondary rotors are part of the suction-side and pressure-side bearing housings, respectively, and consist of the same material, e.g. B. Cast steel.
  • the pins protrude into the bores of the rotors, which are equipped with slide or roller bearings to support the rotors.
  • axial and radial bearings on the suction side and radial bearings on the pressure side or radial bearings on the suction side and axial and radial bearings on the pressure side are used for storage.
  • the drive of the screw rotor compressor can be arranged on one of the rotor ends on the suction or pressure side.
  • gear wheels of a differential gear as well as a seal housing with sealing washers and seals are arranged. Only the seal housing, sealing washers and seals are provided between the suction-side ends of the rotors and the suction-side bearing housing.
  • the compression space is sealed off from the surroundings with seals which are mounted on the pressure side in a seal housing and on the suction side also in a seal housing which is fastened in the suction-side bearing housing and are directed against the rotor end faces.
  • the same or different seals can be used on the four rotor ends.
  • gas-sealed seals which meet particularly high sealing requirements can be used as seals.
  • the tooth spaces are sealed against each other by means of sealing washers, which are also attached to the seal housing.
  • the gap between the rotors and the sealing washers is set to 0 mm during assembly. During operation, the sealing disks are removed from the rotors as far as is necessary for the contactless running between the sealing disk and the rotor.
  • the gear wheels, seals and the bearing housing arranged on the pressure side are also adapted to the pressure conditions.
  • the suction-side bearing housing (3) is equipped on its inside with a pin (25) for engaging in the bore in the fin rotor (1) and with another pin (25) for engaging in the slot rotor (2).
  • the pressure-side bearing housing (5) also has pins (25) on its inside. One of these pins engages in the bore in the rib rotor (1) and the other in the bore in the slot rotor (2). Both bearing housings (3, 5) are detachably attached to the compressor housing (4).
  • the rotors (1, 2) inside the compressor housing (4) only consist of the screw-toothed part of the rib rotor (1) and the screw-toothed part of the slot rotor (2), in the end of which central bores for receiving the pins (25) are made .
  • Fig. 1 is the drive of the compressor on the pressure side of the rib rotor (1).
  • the rotors (1, 2) are supported on the pressure-side pin (25) by radial bearings and axial bearings (20, 22), which are held by spacer rings (21) and secured by shaft nuts (23). On the suction side, the rotors (1, 2) are mounted in radial bearings (12) on the journal (25).
  • oil wipers (13) with a discharge channel through the bearing housing (3) are arranged within the bores of the rotors (1, 2) and between the ends of the pins (25).
  • the rib rotor (1) is driven on the pressure side by means of a torsion shaft (9) with a coupling flange.
  • This torsion shaft is guided through a bore in the pressure-side bearing housing (5) and the pin (25) and has a thickened portion (26) at the inner end, which is located in a recess in the bore of the fin rotor (1).
  • a positive connection is thereby established between the torsion shaft (9) and the rib rotor (1).
  • Gas seals (10, 17) are located on the pressure side and the suction side of the end faces of the rotors to seal the compression space from the atmosphere side.
  • the gaps between the tooth spaces of the rotors (1, 2) are sealed by means of sealing washers (15, 16) which are inserted and fastened in the suction-side seal housing (14) or in the pressure-side seal housing (8).
  • a differential is used between the pressure-side seal housing (8) and the bearing housing (5).
  • This differential consists of a gear wheel (6) for the rib rotor (1) and a gear wheel (7) for the slot rotor (2) with the necessary pressure side bearing locks (19).
  • Fig. 2 shows the design of a screw rotor compressor with radial bearings (12) and (20), which is designed for a high bearing load.
  • the pressure-side bearing housing (5) is designed such that wider gear wheels (6 ') on the rib rotor (1) and also wider gear wheels (7') on the slot rotor (23) as well as larger radial and axial bearings (20 , 22) can be used.
  • the gear wheels (6 ', 7') are connected to the rotors (1, 2) by spur tooth couplings (24, 27) via central screws (18).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP96101860A 1995-04-08 1996-02-09 Etanchéité, aménagement des paliers et entraínement des rotors d'un compresseur à vis tournant à sec Expired - Lifetime EP0736692B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19513380A DE19513380C2 (de) 1995-04-08 1995-04-08 Abdichtung, Lagerung und Antrieb der Rotoren eines trockenlaufenden Schraubenrotorverdichters
DE19513380 1995-04-08

Publications (2)

Publication Number Publication Date
EP0736692A1 true EP0736692A1 (fr) 1996-10-09
EP0736692B1 EP0736692B1 (fr) 2001-04-18

Family

ID=7759258

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96101860A Expired - Lifetime EP0736692B1 (fr) 1995-04-08 1996-02-09 Etanchéité, aménagement des paliers et entraínement des rotors d'un compresseur à vis tournant à sec

Country Status (4)

Country Link
US (1) US5695327A (fr)
EP (1) EP0736692B1 (fr)
JP (1) JPH08284855A (fr)
DE (1) DE19513380C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2964163A1 (fr) * 2010-10-12 2012-03-02 Alcatel Lucent Pompe a vide de type seche
WO2018054860A1 (fr) * 2016-09-21 2018-03-29 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Système de compresseur à vis pour véhicule utilitaire

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19800825A1 (de) * 1998-01-02 1999-07-08 Schacht Friedrich Trockenverdichtende Schraubenspindelpumpe
US6241486B1 (en) 1998-03-18 2001-06-05 Flowserve Management Company Compact sealless screw pump
EP0952351A1 (fr) 1998-04-21 1999-10-27 Ateliers Busch S.A. Machine volumétrique
DE19820523A1 (de) * 1998-05-08 1999-11-11 Peter Frieden Schraubenspindel-Vakuumpumpe mit Rotorkühlung
DE19820622A1 (de) * 1998-05-09 1999-11-11 Peter Frieden Demontierbare Vielzweckpumpe oder -kompressor für Chemie-, Verfahrens-, Lebensmittel- und Vakuumtechnik
US6652250B2 (en) * 2000-10-16 2003-11-25 Kobe Steel, Ltd. Screw compressor having intermediate shaft bearing
WO2006041494A1 (fr) * 2004-09-30 2006-04-20 Carrier Corporation Joint pour compresseur a vis
US7121814B2 (en) * 2004-09-30 2006-10-17 Carrier Corporation Compressor sound suppression
US20070092393A1 (en) * 2005-10-26 2007-04-26 General Electric Company Gas release port for oil-free screw compressor
US10941770B2 (en) 2010-07-20 2021-03-09 Trane International Inc. Variable capacity screw compressor and method
US10718334B2 (en) 2015-12-21 2020-07-21 Ingersoll-Rand Industrial U.S., Inc. Compressor with ribbed cooling jacket
CN109538478A (zh) * 2018-11-27 2019-03-29 王廷华 一种压缩机
DE202018107141U1 (de) * 2018-12-13 2020-03-18 Vogelsang Gmbh & Co. Kg Drehkolbenpumpe mit innenliegender Lagerung
BE1026993B1 (nl) * 2019-01-29 2020-08-24 Atlas Copco Airpower Nv Drooglopend Systeem met Slijtwillig Afdichtingselement, Afdichtingselement Daarvoor en Werkwijze voor het Samenstellen van het Systeem
DK3889431T3 (da) * 2020-03-31 2024-03-18 Alfa Laval Corp Ab Roterende, positiv fortrængningspumpe

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB343344A (en) * 1930-03-12 1931-02-19 Brown David & Sons Ltd Improvements in or relating to rotary gear pumps
FR1039761A (fr) * 1951-07-11 1953-10-09 Bronzavia Sa Perfectionnements aux pompes rotatives à gaz
GB884171A (en) * 1958-06-04 1961-12-06 Netzschkau Maschf Nema Improvements in or relating to rotary displacement expansion machines
DE1403296A1 (de) * 1959-09-19 1969-03-27 Balzers Hochvakuum Fluessigkeitspumpe
EP0101345A1 (fr) * 1982-07-22 1984-02-22 BENDIX France Compresseur volumétrique à vis
FR2588322A1 (fr) * 1985-10-03 1987-04-10 Bitar Joseph Machine hydraulique de structure modulaire
DE3920184A1 (de) * 1989-06-21 1991-01-10 Diesel Kiki Co Fluegelzellenverdichter mit reduziertem gewicht und ausgezeichnetem antifressverhalten und hohem verschleisswiderstand

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Publication number Priority date Publication date Assignee Title
US2031125A (en) * 1934-02-06 1936-02-18 Erospha Inc Spherical machine
GB636417A (en) * 1943-03-27 1950-04-26 Joseph Earl Whitfield Composite metal articles and the method of making the same
US2746394A (en) * 1951-08-11 1956-05-22 Gen Motors Corp Gear pump
DD118696A1 (fr) * 1975-04-10 1976-03-12
FR2508113A1 (fr) * 1981-06-17 1982-12-24 Zimmern Bernard Machine volumetrique a vis et pignons
US4504203A (en) * 1983-01-18 1985-03-12 Delta Screw Nederland B.V. Apparatus adapted for use as a screw compressor for motor
JPS62107285A (ja) * 1985-11-01 1987-05-18 Hitachi Ltd スクリユ−圧縮機
DE3609996C2 (de) * 1986-03-25 1994-10-20 Mahle Gmbh Schraubenverdichter
DE4403649C2 (de) * 1994-02-05 1999-10-07 Ghh Rand Schraubenkompressoren Lagerung und Antrieb der Rotoren eines Schraubenverdichters
DE4403648A1 (de) * 1994-02-05 1995-08-10 Gutehoffnungshuette Man Abdichtung der Stirnflächen der Rotoren eines Schraubenrotorverdichters gegenüber dem Gehäuse

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB343344A (en) * 1930-03-12 1931-02-19 Brown David & Sons Ltd Improvements in or relating to rotary gear pumps
FR1039761A (fr) * 1951-07-11 1953-10-09 Bronzavia Sa Perfectionnements aux pompes rotatives à gaz
GB884171A (en) * 1958-06-04 1961-12-06 Netzschkau Maschf Nema Improvements in or relating to rotary displacement expansion machines
DE1403296A1 (de) * 1959-09-19 1969-03-27 Balzers Hochvakuum Fluessigkeitspumpe
EP0101345A1 (fr) * 1982-07-22 1984-02-22 BENDIX France Compresseur volumétrique à vis
FR2588322A1 (fr) * 1985-10-03 1987-04-10 Bitar Joseph Machine hydraulique de structure modulaire
DE3920184A1 (de) * 1989-06-21 1991-01-10 Diesel Kiki Co Fluegelzellenverdichter mit reduziertem gewicht und ausgezeichnetem antifressverhalten und hohem verschleisswiderstand

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2964163A1 (fr) * 2010-10-12 2012-03-02 Alcatel Lucent Pompe a vide de type seche
WO2018054860A1 (fr) * 2016-09-21 2018-03-29 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Système de compresseur à vis pour véhicule utilitaire

Also Published As

Publication number Publication date
US5695327A (en) 1997-12-09
JPH08284855A (ja) 1996-10-29
EP0736692B1 (fr) 2001-04-18
DE19513380C2 (de) 1997-09-04
DE19513380A1 (de) 1996-10-10

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