EP0955466B1 - Etanchéité de jeu annulaire - Google Patents

Etanchéité de jeu annulaire Download PDF

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Publication number
EP0955466B1
EP0955466B1 EP98106690A EP98106690A EP0955466B1 EP 0955466 B1 EP0955466 B1 EP 0955466B1 EP 98106690 A EP98106690 A EP 98106690A EP 98106690 A EP98106690 A EP 98106690A EP 0955466 B1 EP0955466 B1 EP 0955466B1
Authority
EP
European Patent Office
Prior art keywords
pressure
compartment
machine according
sealing
stage
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
EP98106690A
Other languages
German (de)
English (en)
Other versions
EP0955466A1 (fr
Inventor
Jens-Uwe Brandt
Gerhard Rohlfing
Vejen Hristov
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.)
ITT Bornemann GmbH
Original Assignee
Joh Heinr Bornemann 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 Joh Heinr Bornemann GmbH filed Critical Joh Heinr Bornemann GmbH
Priority to EP98106690A priority Critical patent/EP0955466B1/fr
Priority to ES98106690T priority patent/ES2187848T3/es
Priority to DE59806719T priority patent/DE59806719D1/de
Priority to DK98106690T priority patent/DK0955466T3/da
Priority to AT98106690T priority patent/ATE230070T1/de
Priority to RU98123617/06A priority patent/RU2218480C2/ru
Priority to JP00493399A priority patent/JP4152513B2/ja
Priority to NO19990860A priority patent/NO323251B1/no
Priority to CA002262849A priority patent/CA2262849C/fr
Priority to KR10-1999-0008053A priority patent/KR100527525B1/ko
Priority to US09/272,167 priority patent/US6129533A/en
Priority to BR9902040-8A priority patent/BR9902040A/pt
Priority to CN99105562A priority patent/CN1131377C/zh
Publication of EP0955466A1 publication Critical patent/EP0955466A1/fr
Application granted granted Critical
Publication of EP0955466B1 publication Critical patent/EP0955466B1/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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps

Definitions

  • the invention relates to a fluid-carrying machine, in particular Pump, with one in a stationary housing part inside an annular gap rotating component, the stationary Housing part with a higher product pressure interior separates from a lower pressure outside space, in which the rotating component is stored in an external bearing is sealed from the interior via a sealing system is.
  • the invention relates to a screw pump with at least one feed screw, which was enclosed by a housing is that at least one suction nozzle and at least has a pressure port, the suction port with one of the Conveyor screw upstream suction chamber and the pressure nozzle with a pressure chamber downstream of the screw stand, the facilities for separating the respective liquid phase from the gas phase of the emerging from the screw Medium flow and a lower section for recording of at least a subset of the separated liquid phase has, at this lower pressure chamber section a liquid short-circuit line is connected with communicates with the suction chamber and together with the conveyor elements a closed circuit for permanent sealing forms the required amount of liquid.
  • a liquid short-circuit line is connected with communicates with the suction chamber and together with the conveyor elements a closed circuit for permanent sealing forms the required amount of liquid.
  • the invention has for its object a machine of the beginning described design with an improved sealing system to develop for the rotating component.
  • a two-stage sealing system is thus provided.
  • the first stage is used to reduce pressure and is used of the principle of action of a radial plain bearing with the construction of a hydrodynamic lubricating wedge.
  • the plain bearing shells can solid industrial ceramics (e.g. based on aluminum oxide or Zirconium oxide base), made of solid hard metals (e.g. based on silicon carbide) or tungsten carbide base) or from coated Metals (e.g. hard chrome plating, tungsten carbide or chromium oxide coating) consist.
  • This first sealing stage has the advantage that on the one hand from the liquid of the medium built an effective hydrodynamic lubricating wedge is that, on the other hand, however, any penetrated into the annular gap Particles due to the extreme hardness and wear resistance the plain bearing shells simply grated between them become.
  • the feedback of the leakage of the first sealing stage can e.g. B. due to a suitable pressure drop between the outlet and inlet side the machine (with sealing arrangement on the outlet side) or z. B. by external tools such. B. a pump (at the inlet side Arrangement of the seal).
  • the second sealing stage provided according to the invention is minimized to protect the environment or mechanical functional elements Leakage at the lowest differential pressures.
  • the second Sealing level as a simple sealing system in the form of a lip seal or a single-acting mechanical seal be trained.
  • the second Sealing stage also as a multiple circuit of sealing systems more conventional Be designed z. B. as a lip seal downstream mechanical seal or as a V-ring with downstream lip seal and downstream mechanical seal.
  • FIG. 1 shows a previously known (see DE 43 16 735 C2) screw pump, the two contactless intermeshing conveying elements, has opposite pairs of conveyor screws, the one right-hand screw 1 and one left-hand screw Include feed screw 2.
  • the interlocking conveyor screws form together with the enclosing housing 3 individually closed delivery chambers.
  • the torque transmission from the drive to the driven shaft is done by a Gear transmission 4 arranged outside the pump housing 3.
  • the pump housing 3 has a suction nozzle 5 and a pressure nozzle 6 on. That flowing to the pump through the suction nozzle 5
  • Medium 9 is in the pump housing 3 in two partial flows each central suction chamber 10 supplied to the associated feed screw 1 or 2 is connected upstream.
  • This screw downstream is a pressure chamber 11, which is axially outward is completed by a shaft seal 12 each serves to seal an outer bearing 13.
  • a liquid short-circuit line 14 connected to the suction chamber 10 in connection stands.
  • the pressure side from the pumped liquid-gas mixture separated and dosed back into the suction area Partial liquid volume flow is marked with arrow 15 and is used as a liquid recirculation from the suction chamber 10 promoted in the pressure chamber 11.
  • the liquid level in the pump housing 3 or pressure chamber 11 can are usually below the waves 7, 8.
  • FIG. 2 shows an embodiment of the invention.
  • one stationary housing part 16 rotates within an annular gap 17 is a component which is the shaft 8 of the figure 1 acts.
  • the stationary housing part 16 separates a higher one Product pressure interior, which is the Pressure chamber 11 of Figure 1 is a lower one Pressure-bearing outer space 18, in which the shaft 8 in a External bearing 13 is mounted, which is opposite the pressure chamber 11 is sealed by the following sealing system:
  • the annular gap 17 is between two extremely hard, wear-resistant Materials existing slide bearing shells 19 formed, to compensate for misalignments in radial Direction with the help of O-rings 20 are mounted elastically.
  • For the leakage flowing through the annular gap 17 is that caused by the Slide bearing shells 19 formed the first pressure reduction stage in the axial Directed a feedback device 21, the this leakage from the first sealing stage in the conveying process of the turbomachine, for which purpose a separate pump 23 can be provided.
  • a separate pump 23 can be provided.
  • the feedback device 21 is seen in the axial direction second sealing stage 22 downstream, as a simple seal z. B. can be formed in the form of a lip seal.
  • FIG 3 shows a screw pump according to Figure 1 with a sealing system according to the invention, only indicated schematically according to Figure 2 and an inventive, additionally provided Pressure equalization device 24.
  • the latter is in the installation space the outer bearing 13 connecting the suction chamber 10 Line 25 switched and can through a membrane or be formed by a bladder accumulator.
  • the pressure compensation device 24 ensures that in the installation space mentioned the same pressure level prevails as in the suction chamber 10. This Arrangement is special with changing pressures in the suction space 10 advantageous, so the pressure differences at the second Minimize seal level 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Rotary Pumps (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Liquid Crystal Substances (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Sealing Of Bearings (AREA)
  • Mechanical Sealing (AREA)
  • Prostheses (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (10)

  1. Machine débiteuse de fluide, notamment pompe, comprenant un composant (8) tournant dans une pièce de carter fixe (16) à l'intérieur d'une fente annulaire (17), la pièce de carter fixe (16) séparant un espace intérieur (11) où règne une pression de produit relativement élevée, d'un espace extérieur (18) où règne une pression relativement faible et dans lequel le composant rotatif (8) est supporté dans un agencement de palier extérieur (13) qui est rendu étanche vis-à-vis de l'espace intérieur (11) au moyen d'un système d'étanchéité (17, 19, 22), caractérisée en ce que la fente annulaire (17) est formée entre deux coquilles de palier lisse (19) constituées de matériaux extrêmement durs, résistant à l'usure, et qui constituent un premier étage de chute de pression selon le principe de fonctionnement d'un palier lisse radial, étage auquel fait suite en direction axiale un dispositif de retour (21) renvoyant au processus de transport de la machine les fuites émanant de ce premier étage d'étanchéité, le dispositif de retour étant suivi en direction axiale par un deuxième étage d'étanchéité (22), qui est réalisé sous la forme d'une simple étanchéité sous forme d'une bague d'étanchéité à lèvre et/ou d'une simple étanchéité à bague lisse.
  2. Machine selon la revendication 1, caractérisée en ce que les coquilles de palier lisse (19) sont supportées élastiquement en direction radiale pour compenser les défauts d'alignement.
  3. Machine selon la revendication 1 ou 2, caractérisée en ce que l'épaisseur de la fente annulaire formée entre les deux coquilles de palier lisse (19) vaut environ 0,3 à 1,5% du diamètre des surfaces de glissement.
  4. Machine selon la revendication 1, 2 ou 3, caractérisée en ce que la longueur des coquilles de palier lisse (19) vaut environ 20 à 60% du diamètre des surfaces de glissement.
  5. Machine selon l'une des revendications précédentes, caractérisée en ce que le deuxième étage d'étanchéité (22) est constitué sous la forme d'un montage multiple de joints, qui comprend une bague en V, une bague d'étanchéité à lèvre ainsi qu'une étanchéité annulaire lisse.
  6. Pompe à vis, comprenant au moins une vis transporteuse (1,2), qui est entourée par un carter (3), qui présente au moins un raccord d'aspiration (5) et au moins un raccord de pression (6), le raccord d'aspiration (5) étant en liaison avec un espace d'aspiration (10) situé en amont de la vis transporteuse (1,2) et le raccord de pression (6) avec un espace de pression (11) situé en aval de la vis transporteuse (1,2), l'espace de pression comportant des moyens pour séparer l'éventuelle phase liquide de la phase gazeuse du flux de médium provenant de la vis transporteuse (1,2) ainsi qu'une partie inférieure pour collecter au moins une partie de la phase liquide séparée, et il est raccordé à cette partie inférieure de l'espace de pression une conduite de court-circuit de liquide (14) qui est en liaison avec l'espace d'aspiration (10) et forme avec les éléments transporteurs un circuit fermé pour une quantité de liquide nécessaire à l'étanchéité permanente, suivant l'une quelconque des revendications précédentes, caractérisée en ce que le dispositif de retour (21) est raccordé à la conduite de court-circuit de liquide (14).
  7. Machine selon la revendication 6, caractérisée en ce qu'il est prévu entre l'espace d'installation de l'agencement de palier extérieur (13) et l'espace d'aspiration (10) un dispositif d'équilibrage de pression (24) instaurant le même niveau de pression.
  8. Machine selon la revendication 7, caractérisée en ce que le dispositif d'équilibrage de pression (24) est constitué par une membrane.
  9. Machine selon la revendication 7, caractérisée en ce que le dispositif d'équilibrage de pression (24) est constitué par un accumulateur à vessie.
  10. Machine selon l'une des revendications précédentes, caractérisée en ce que le dispositif de retour (21) comporte une pompe séparée (23).
EP98106690A 1998-04-11 1998-04-11 Etanchéité de jeu annulaire Expired - Lifetime EP0955466B1 (fr)

Priority Applications (13)

Application Number Priority Date Filing Date Title
EP98106690A EP0955466B1 (fr) 1998-04-11 1998-04-11 Etanchéité de jeu annulaire
ES98106690T ES2187848T3 (es) 1998-04-11 1998-04-11 Maquina que conduce fluidos.
DE59806719T DE59806719D1 (de) 1998-04-11 1998-04-11 Spaltringdichtung
DK98106690T DK0955466T3 (da) 1998-04-11 1998-04-11 Tætning til ringformet spalte
AT98106690T ATE230070T1 (de) 1998-04-11 1998-04-11 Spaltringdichtung
RU98123617/06A RU2218480C2 (ru) 1998-04-11 1998-12-28 Машина для перемещения текучих сред (варианты)
JP00493399A JP4152513B2 (ja) 1998-04-11 1999-01-12 液体送り装置
NO19990860A NO323251B1 (no) 1998-04-11 1999-02-23 Spalteringtetning
CA002262849A CA2262849C (fr) 1998-04-11 1999-02-23 Systeme d'etancheite ameliore pour l'element rotatif d'une pompe
KR10-1999-0008053A KR100527525B1 (ko) 1998-04-11 1999-03-11 환상 틈새형 밀봉 구조를 갖는 스크류 펌프
US09/272,167 US6129533A (en) 1998-04-11 1999-03-18 Sealing system for rotating component of a pump
BR9902040-8A BR9902040A (pt) 1998-04-11 1999-04-12 Máquina condutora de fluido.
CN99105562A CN1131377C (zh) 1998-04-11 1999-04-12 缝隙环密封

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98106690A EP0955466B1 (fr) 1998-04-11 1998-04-11 Etanchéité de jeu annulaire

Publications (2)

Publication Number Publication Date
EP0955466A1 EP0955466A1 (fr) 1999-11-10
EP0955466B1 true EP0955466B1 (fr) 2002-12-18

Family

ID=8231756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98106690A Expired - Lifetime EP0955466B1 (fr) 1998-04-11 1998-04-11 Etanchéité de jeu annulaire

Country Status (13)

Country Link
US (1) US6129533A (fr)
EP (1) EP0955466B1 (fr)
JP (1) JP4152513B2 (fr)
KR (1) KR100527525B1 (fr)
CN (1) CN1131377C (fr)
AT (1) ATE230070T1 (fr)
BR (1) BR9902040A (fr)
CA (1) CA2262849C (fr)
DE (1) DE59806719D1 (fr)
DK (1) DK0955466T3 (fr)
ES (1) ES2187848T3 (fr)
NO (1) NO323251B1 (fr)
RU (1) RU2218480C2 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1327078B1 (fr) 2000-10-18 2009-05-06 LEYBOLD VACUUM GmbH Rotor a vis a plusieurs etages
GB2371838B (en) * 2001-02-02 2004-07-21 Federal Mogul Rpb Ltd Thrust Bearing Arrangement
US20080169157A1 (en) * 2002-12-02 2008-07-17 Wyker Christopher A Lip seal lubrication reservoir and method of level control
CN1536801B (zh) * 2003-04-07 2010-04-28 华为技术有限公司 一种网络侧以及用户侧的媒质接入控制层处理单元
ZA200507096B (en) 2004-09-07 2006-06-28 Crane John Inc Sealing system for slurry pump
WO2007000815A1 (fr) * 2005-06-29 2007-01-04 Mayekawa Mfg. Co., Ltd Procédé d’arrivée d’huile et dispositif pour compresseur à vis à deux étages, et procédé de commande d’un dispositif de réfrigération
US20080003099A1 (en) * 2006-06-30 2008-01-03 Honeywell International, Inc. Closed bias air film riding seal in event of housing breach for shared engine lubrication accessory gearboxes
DE202007004292U1 (de) * 2007-03-23 2008-07-31 Ghh-Rand Schraubenkompressoren Gmbh Dichtung für Wellenabdichtungen
US8342156B2 (en) * 2009-08-27 2013-01-01 O'shea Fergal Michael Bearing arrangement for a pump
US20120306156A1 (en) * 2011-06-01 2012-12-06 Alma Products Company Compressor seal
DE102012001700B4 (de) * 2012-01-31 2013-09-12 Jung & Co. Gerätebau GmbH Zweispindelige Schraubenspindelpumpe in einflutiger Bauweise
USD749138S1 (en) 2014-12-19 2016-02-09 Q-Pumps S.A. de C.V. Twin screw pump
CN106481558B (zh) * 2015-08-27 2018-11-16 上海伊莱茨真空技术有限公司 一种用于罗茨真空泵的三唇封油密封系统
DE102017221847A1 (de) 2017-12-04 2019-06-06 Skf Lubrication Systems Germany Gmbh Schmierfettpumpe und Verfahren zur Verwertung von Leckagefett einer Schmierfettpumpe
DE202017107379U1 (de) 2017-12-04 2017-12-18 SKF Lubrication System Germany GmbH Schmierfettpumpe
DE102020124392A1 (de) * 2020-09-18 2022-03-24 Itt Bornemann Gmbh Abstandseinstellung für doppelschneckenpumpen

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Also Published As

Publication number Publication date
NO990860D0 (no) 1999-02-23
EP0955466A1 (fr) 1999-11-10
NO990860L (no) 1999-10-12
JP4152513B2 (ja) 2008-09-17
CN1232142A (zh) 1999-10-20
CA2262849A1 (fr) 1999-10-11
RU2218480C2 (ru) 2003-12-10
BR9902040A (pt) 2000-02-22
ES2187848T3 (es) 2003-06-16
US6129533A (en) 2000-10-10
CN1131377C (zh) 2003-12-17
DK0955466T3 (da) 2003-03-03
DE59806719D1 (de) 2003-01-30
NO323251B1 (no) 2007-02-12
CA2262849C (fr) 2004-11-30
JPH11303772A (ja) 1999-11-02
KR19990082721A (ko) 1999-11-25
ATE230070T1 (de) 2003-01-15
KR100527525B1 (ko) 2005-11-09

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