WO2010049077A1 - Garniture mécanique d'étanchéité - Google Patents

Garniture mécanique d'étanchéité Download PDF

Info

Publication number
WO2010049077A1
WO2010049077A1 PCT/EP2009/007485 EP2009007485W WO2010049077A1 WO 2010049077 A1 WO2010049077 A1 WO 2010049077A1 EP 2009007485 W EP2009007485 W EP 2009007485W WO 2010049077 A1 WO2010049077 A1 WO 2010049077A1
Authority
WO
WIPO (PCT)
Prior art keywords
ring
mechanical seal
annular
counter
seal according
Prior art date
Application number
PCT/EP2009/007485
Other languages
German (de)
English (en)
Inventor
Markus Schwerdtfeger
Tobias Hoffmann
Mario Bauer
Said Jennaoui
Jan Hinrichs
Original Assignee
Kaco Gmbh + Co. Kg
Ixetic Mac 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 Kaco Gmbh + Co. Kg, Ixetic Mac Gmbh filed Critical Kaco Gmbh + Co. Kg
Publication of WO2010049077A1 publication Critical patent/WO2010049077A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/38—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member sealed by a packing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3464—Mounting of the seal
    • F16J15/348—Pre-assembled seals, e.g. cartridge seals

Definitions

  • the invention relates to a mechanical seal, in particular for CO2 compressors, according to the preamble of claim 1.
  • Such mechanical seals are used for example in C0 2 compressors to seal an oil-gas mixture.
  • C0 2 compressors In the area around the sealing gap between the sliding ring and the mating ring occur due to the high operating temperatures deposits of the sealed oil-gas mixture.
  • These carbon deposits cause in use to the fact that in the cooling phase at standstill of the compressor increased leakage of the sealed oil-gas mixture occurs.
  • the invention has for its object to form the generic mechanical seal so that when the unit is switched off, especially when switched off the CO 2 compressor, the leakage can be kept as small as possible.
  • the receiving space is axially bounded by the mating ring and a support ring, which advantageously supports the mating ring axially.
  • the receiving space is formed during assembly of the individual parts of Gleitringdichtu ⁇ g.
  • For sealing advantageously serves a ring seal, which is arranged between the mating ring and the support ring. It is easy to assemble when assembling the mechanical seal.
  • the ring seal is an O-ring.
  • the ring seal may also be a sealing element with which a perfect seal of the receiving space is ensured with respect to the annulus.
  • the sealing element is advantageous with a sealing edge sealing on the mating ring.
  • the sealing element is part of a surrounding the support ring at least partially sheath, which protects the support ring from those media that pass from the annulus in the direction of the air side.
  • the ring seal is advantageously arranged between an axial projection of the mating ring and a disk-shaped base body of the support ring.
  • the ring seal is advantageously surrounded by a ring body, which ensures that the ring seal in the radial direction essentially retains its installation position.
  • the ring body is preferably axially from the base body of the support ring and is advantageously integrally formed with it. As a result, the assembly of the mechanical seal is much easier.
  • the drawing shows in an axial section in each case a half of two embodiments of inventive mechanical seals.
  • the mechanical seal is used in CO 2 compressors. From the compressor, the compressor housing 1 is shown, which is penetrated by a compressor shaft 2. On the oil-gas side 3, the compressor shaft 2 is provided with an enlarged diameter collar 4, which partially protrudes from an installation space 5 of the compressor housing 1.
  • the installed in the installation space 5 mechanical seal has a sliding ring 6 which rests against a mating ring 7. It usually consists of SiC.
  • the sliding ring 6 and the mating ring 7 surround the compressor shaft 2 at a radial distance.
  • an annular space 8 is formed between the two rings 6, 7 and the compressor shaft 2, which has constant cross-section over its axial length.
  • the sliding ring 6 has on its side facing the compressor shaft 2 an annular groove 9 into which a compression spring 10 engages. It is supported with one end on the collar 4 and with its other end on a disc 11, which lies in the annular groove 9.
  • the annular groove 9 is frontally and in Direction to the compressor shaft 2 open.
  • the sliding ring 6 has a radially extending annular sealing surface 12, which is formed by the end face of an axial annular projection 13.
  • the projection 13 extends by way of example over half the radial thickness of the sliding ring 6.
  • the sealing surface 12 extends from the annular space 8 bounding inner side 14 of the slide ring 6.
  • an annular seal 16 preferably an O-ring on. With him, the seal 6 is rotatably connected to the compressor shaft 2.
  • the disc 1 1 and the sealing ring 16 are within the annular groove 9 of the sliding ring 6.
  • the disc 1 1 is under the pressure of the compressor shaft 2 by far surrounding helical compression spring 10 on the sealing ring 16 at.
  • the mating ring 7 has on its side facing away from the sliding ring 6 side an axial annular projection 17, the radial distance from the inner wall 18 of the installation space 5 and the compressor shaft 2 has.
  • the annular projection 17 is surrounded by a ring seal 19, preferably an O-ring, which rests sealingly against the inner wall 18 of the installation space 5 and on the outside of the annular projection 17.
  • the counter ring 7 is rotatably mounted in the compressor housing 1.
  • the ring seal 19 is axially secured by a support ring 20 which surrounds the compressor shaft 2 at a small distance and consists for example of steel.
  • the support ring 20 has a disc-shaped annular body 21 which lies in a radial plane and from which a cylindrical projection 22 protrudes near its radially outer edge. Its axis is located in the center axis of the support ring 20.
  • the projection 22 is located with its end face against the ring seal 19. Thereby, the ring seal 19 is axially secured between the end face of the projection 22 of the support ring 20 and a radial side surface 23 of the mating ring 7.
  • the ring seal 19 and the projection 22 advantageously have the same cross-sectional area in the region of their contact point.
  • the radially outwardly projecting beyond the projection 22 part of the disk-shaped annular body 21 of the support ring 20 is located in a widened area of the installation space 5.
  • the inner wall 18 goes up of the projection 22 of the support ring 20 in a conically tapered wall portion 24, which adjoins a cylindrical wall portion 25 to which the ring seal 19 sealingly abuts.
  • the installation space 5 is in turn widened so that the sliding ring 6 is spaced from the inner wall of the installation space 5.
  • a locking ring 26 which engages with its outer edge in a recess 27 in the inner wall 18 of the installation space 5.
  • This recess 27 is provided so that the securing ring 26 axially loads the support ring 20.
  • an axial pressure is exerted on the annular seal 19 via the projection 22 of the support ring 20, which contributes to the secure sealing.
  • the recess 27 is spaced from the air side 28 facing the end 29 of the compressor housing. 1
  • the ring seal 32 is formed in the embodiment shown in the lower half of the drawing by a triangular in axial section sealing element, which rests sealingly with its sealing edge 33 on the radial and planar end face 34 of the annular projection 17.
  • the ring seal 32 It is part of a surrounding the annular body 21 of the support ring 20 partially sheath 35. It extends for example over part of the radial width of the air side 28 facing radial outer side 36 of the annular body 21, covers the edge 37 of the central passage opening 38 of the annular body 21 and covers a Part of the radial width of the counter-ring 7 facing radial outer side 39 of the annular body 21.
  • the annular seal 32 in the form of the sealing element is provided at the free end of this lying on the outer side 39 of the sheath part 35.
  • the sheath 35 is made of suitable elastomeric material.
  • the ring seal 32 prevents in use of the mechanical seal that the occurring carbon is deposited within the mechanical seal. Since the annular space 8 is sealed by the annular seal 32 with respect to the receiving space 31, the deposits reach the air side 28, where they are harmless to the function of the mechanical seal. The position of the sliding partners 6, 7 thus remains unaffected in the installation position during operation and also at standstill of the compressor, so that the sealing effect is ensured over a long service life.
  • the oil located on the oil-gas side 3 does not have to fill the entire oil chamber 3, but, depending on the type of compressor, can only serve to lubricate the compressor-internal components. This oil occurs as so-called splash oil in the area of the mechanical seal.
  • the temperature of the oil reaches during operation of the mechanical seal, for example, about 150 to 160 ° C.
  • the pressure is in this case in a range of for example about 60 to 80 bar.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Sealing (AREA)

Abstract

L'invention concerne une garniture mécanique d'étanchéité qui présente une bague de glissement (6) qui s'applique sous l'effet d'une force de ressort contre une bague conjuguée (7) en formant un interstice d'étanchéité (30) et qui, conjointement avec la bague conjuguée (7), limite radialement vers l'extérieur un espace annulaire (8). Ledit espace est situé entre les partenaires de glissement (6, 7) et un élément de machine à étancher. Sur le côté opposé à la bague de glissement (6), un espace de réception (31) est situé devant la bague conjuguée (7). Dans la partie entourant l'interstice d'étanchéité (30), en raison des hautes températures de fonctionnement, il se produit des accumulations du mélange huile et gaz à étancher, qui conduisent, dans la phase de refroidissement à l'arrêt du compresseur, à une fuite accrue du mélange huile et gaz à étancher. Afin de maintenir les fuites aussi faibles que possible lorsque l'unité est arrêtée, l'espace de réception (31) est étanché par rapport à l'espace annulaire (8). De ce fait, les accumulations de charbon sont évacuées hors de l'espace annulaire (8) vers l'extérieur, et ne parviennent pas dans l'espace de réception (31). La garniture mécanique d'étanchéité est notamment utilisée dans des compresseurs de CO2.
PCT/EP2009/007485 2008-10-31 2009-10-20 Garniture mécanique d'étanchéité WO2010049077A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810056959 DE102008056959A1 (de) 2008-10-31 2008-10-31 Gleitringdichtung, insbesondere für CO2-Kompressoren
DE102008056959.3 2008-10-31

Publications (1)

Publication Number Publication Date
WO2010049077A1 true WO2010049077A1 (fr) 2010-05-06

Family

ID=41507967

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/007485 WO2010049077A1 (fr) 2008-10-31 2009-10-20 Garniture mécanique d'étanchéité

Country Status (2)

Country Link
DE (1) DE102008056959A1 (fr)
WO (1) WO2010049077A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015090881A1 (fr) * 2013-12-20 2015-06-25 Magna Powertrain Bad Homburg GmbH Compresseur pour machine de cogénération

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022118955A1 (de) 2022-07-28 2024-02-08 Boge Kompressoren Otto Boge Gmbh & Co. Kg Elektrisch angetriebenes Gerät zur Förderung eines Gases

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061319A (en) * 1959-06-24 1962-10-30 Chicago Rawhide Mfg Co Shaft seal assembly
CH398221A (de) * 1961-11-16 1965-08-31 Crane Packing Ltd Rotierende mechanische Dichtung
DE29711292U1 (de) * 1997-06-28 1997-09-11 Kaco GmbH + Co, 74072 Heilbronn Dichtungseinheit, insbesondere für eine Wasserpumpe
DE20212848U1 (de) * 2002-08-21 2002-10-31 Burgmann Dichtungswerke Gmbh Gleitringdichtungsanordnung
EP1357319A2 (fr) * 2002-04-24 2003-10-29 EAGLE INDUSTRY Co., Ltd. Garniture mécanique d'étanchéité

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061319A (en) * 1959-06-24 1962-10-30 Chicago Rawhide Mfg Co Shaft seal assembly
CH398221A (de) * 1961-11-16 1965-08-31 Crane Packing Ltd Rotierende mechanische Dichtung
DE29711292U1 (de) * 1997-06-28 1997-09-11 Kaco GmbH + Co, 74072 Heilbronn Dichtungseinheit, insbesondere für eine Wasserpumpe
EP1357319A2 (fr) * 2002-04-24 2003-10-29 EAGLE INDUSTRY Co., Ltd. Garniture mécanique d'étanchéité
DE20212848U1 (de) * 2002-08-21 2002-10-31 Burgmann Dichtungswerke Gmbh Gleitringdichtungsanordnung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015090881A1 (fr) * 2013-12-20 2015-06-25 Magna Powertrain Bad Homburg GmbH Compresseur pour machine de cogénération

Also Published As

Publication number Publication date
DE102008056959A1 (de) 2010-05-06

Similar Documents

Publication Publication Date Title
EP2063157B1 (fr) Arrangement de bague d'étanchéité glissante
EP3559523B1 (fr) Vanne
EP2607757B1 (fr) Bague d'étanchéité glissante
DE69819602T2 (de) Radialwellendichtung
WO2004046591A1 (fr) Element d'etancheite secondaire
DE1475601A1 (de) Mechanische Druckstufendichtung
EP1872034B1 (fr) Bague d'etancheite d'arbre axial
DE112021000564T5 (de) Schieberventil
EP2561255B1 (fr) Bague collectrice d'étanchéité
EP2618032B1 (fr) Joint d'étanchéité d'arbre, notamment joint d'arbre radial
EP3199815B1 (fr) Pompe centrifuge
WO2010049077A1 (fr) Garniture mécanique d'étanchéité
DE3622963A1 (de) Pumpe, vorzugsweise behaelterpumpe
WO2017076647A1 (fr) Pompe à liquide de refroidissement pour un moteur à combustion interne
DE19903067A1 (de) Gleitringdichtung für CO¶2¶-Kältemittelkompressor eines Kraftfahrzeuges
WO2018145691A1 (fr) Cylindre émetteur pourvu d'un élément d'étanchéite
EP1995501B1 (fr) Dispositif comprenant un arbre et un joint mécanique
DE19841123A1 (de) Radialwellendichtring
WO2017211491A1 (fr) Ensemble garniture mécanique d'étanchéité ainsi que dispositif de pompage pour puits de forage
EP3235035B1 (fr) Dispositif de soupape dans un véhicule automobile
EP3701173B1 (fr) Joint d'étanchéité à bague de glissement lubrifié au gaz et présentant une meilleure protection contre l'encrassement
EP4264021B1 (fr) Joint de tige de soupape comprenant un dispositif de rotation de soupape
WO2017081249A1 (fr) Soupape de maintien de pression et de régulation
DE102013002745A1 (de) Kompressorventil
DE102015217827B4 (de) Wellendichtungssystem und Pumpenanordnung mit einem derartigen Wellendichtungssystem

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09740855

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09740855

Country of ref document: EP

Kind code of ref document: A1