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1. WO2019042720 - ROTARY SEAL ASSEMBLY AND ROTARY SEAL FOR HIGH-PRESSURE APPLICATIONS

Publication Number WO/2019/042720
Publication Date 07.03.2019
International Application No. PCT/EP2018/071354
International Filing Date 07.08.2018
Chapter 2 Demand Filed 28.06.2019
IPC
F16J 15/16 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
JPISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS
15Sealings
16between relatively-moving surfaces
F16J 15/3208 2016.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
JPISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS
15Sealings
16between relatively-moving surfaces
32with elastic sealings, e.g. O-rings
3204with at least one lip
3208provided with tension elements, e.g. elastic rings
F16J 15/3216 2016.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
JPISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS
15Sealings
16between relatively-moving surfaces
32with elastic sealings, e.g. O-rings
3204with at least one lip
3216supported in a direction parallel to the surfaces
F16J 15/322 2016.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
JPISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS
15Sealings
16between relatively-moving surfaces
32with elastic sealings, e.g. O-rings
3204with at least one lip
322supported in a direction perpendicular to the surfaces
CPC
F16J 15/164
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
JPISTONS
15Sealings
16between relatively-moving surfaces
164the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
F16J 15/166
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
JPISTONS
15Sealings
16between relatively-moving surfaces
166with means to prevent the extrusion of the packing
F16J 15/3208
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
JPISTONS
15Sealings
16between relatively-moving surfaces
32with elastic sealings, e.g. O-rings
3204with at least one lip
3208provided with tension elements, e.g. elastic rings
F16J 15/3216
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
JPISTONS
15Sealings
16between relatively-moving surfaces
32with elastic sealings, e.g. O-rings
3204with at least one lip
3216supported in a direction parallel to the surfaces
F16J 15/3244
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
JPISTONS
15Sealings
16between relatively-moving surfaces
32with elastic sealings, e.g. O-rings
3244with hydrodynamic pumping action
F16J 15/3248
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
JPISTONS
15Sealings
16between relatively-moving surfaces
32with elastic sealings, e.g. O-rings
3248provided with casings or supports
Applicants
  • TRELLEBORG SEALING SOLUTIONS GERMANY GMBH [DE]/[DE]
Inventors
  • KOLODZIEJ, Jan
Agents
  • KOHLER SCHMID MÖBUS PATENTANWÄLTE PARTNERSCHAFTSGESELLSCHAFT MBB
Priority Data
10 2017 215 193.530.08.2017DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) ROTATIONSDICHTUNGSANORDNUNG UND ROTATIONSDICHTUNG FÜR HOCHDRUCKANWENDUNGEN
(EN) ROTARY SEAL ASSEMBLY AND ROTARY SEAL FOR HIGH-PRESSURE APPLICATIONS
(FR) ARRANGEMENT DE GARNITURE D'ÉTANCHÉITÉ ROTATIVE ET GARNITURE D'ÉTANCHÉITÉ ROTATIVE POUR APPLICATIONS DE HAUTE PRESSION
Abstract
(DE)
Die Erfindung betrifft eine Rotationsdichtungsanordnung (10) mit einem Stützring (28) aus einem zähelastisch verformbaren Material mit einem hochdruckseitig angeordneten ersten Stützschenkel (34) und mit einem niederdruckseitig angeordneten zweiten Stützschenkel (36), wobei die beiden Stützschenkel über einen Rückenabschnitt (38) miteinander verbunden sind. Durch die beiden Stützschenkel ist eine zur Dichtfläche hin offene Ringnut (46) des Stützrings (28) seitlich begrenzt, in der ein Dichtring (30), gehalten angeordnet ist. Der Dichtring (30) liegt an der Dichtfläche (20) dynamisch dichtend an; ein gummielastisch verformbares Vorspannelement (32), ist zwischen der Dichtungshaltestruktur (22) des einen Maschinenteils und dem Stützring (28) angeordnet, um den Dichtring (30) über den Stützring (28) in einer zur Dichtfläche (20) orthogonal ausgerichteten Vorspannrichtung (52) gegen die Dichtfläche (20) vorzuspannen. Bei einer Druckaktivierung des Vorspannelements (32) durch einen auf der Hochdruckseite H herrschenden Betriebsdruck P ist eine zum Betriebsdruck P druckproportionale Verformung des sich an einer Stützfläche (60) eines der beiden Maschinenteile (12, 14) abstützenden Vorspannelements (32) in Vorspannrichtung (52) bewirkt, derart, dass der Stützring (28) mit seinem niederdruckseitigen Stützschenkel (36) zur Dichtfläche (20) hinbewegt und mit seinem hochdruckseitigen Stützschenkel (34) von der Dichtfläche (20) wegbewegt wird.
(EN)
The invention relates to a rotary seal assembly (10), comprising a support ring (28) made of a viscoelastically deformable material, which support ring has a first support leg (34) arranged on the high-pressure side and a second support leg (36) arranged on the low-pressure side, the two support legs being connected to each other by a back portion (38). The two support legs laterally delimit an annular groove (46) of the support ring (28), which annular groove is open toward the sealing surface and in which annular groove a sealing ring (30) is arranged in a retained manner. The sealing ring (30) lies against the sealing surface (20) in a dynamically sealing manner; a rubber-elastically deformable pre-loading element (32) is arranged between the seal retaining structure (22) of the one machine part and the support ring (28) in order to pre-load the sealing ring (30) against the sealing surface (20) via the support ring (28) in a pre-loading direction (52) oriented orthogonally to the sealing surface (20). In the case of a pressure activation of the pre-loading element (32) by an operating pressure P prevailing on the high-pressure side H, the pre-loading element (32), which is supported on a support surface (60) of one of the two machine parts (12, 14), is deformed in the pre-loading direction (52) proportionally to the operating pressure P such a way that the support ring (28) is moved toward the sealing surface (20) with the low-pressure-side support leg (36) thereof and is moved away from the sealing surface (20) with the high-pressure-side support leg (34) thereof.
(FR)
L'invention concerne un arrangement de garniture d'étanchéité rotative (10) comprenant une bague d'appui (28) en un matériau déformable viscoplastique comprenant une première branche d'appui (34) disposée du côté haute pression et comprenant une deuxième branche d'appui (36) disposée du côté basse pression. Les deux branches d'appui sont reliées l'une à l'autre par le biais d'une portion de dos (38). Les deux branches d'appui délimitent latéralement une rainure annulaire (46) de la bague d'appui (28), ouverte vers la surface d'étanchéité et dans laquelle est maintenue une bague d'étanchéité (30). La bague d'étanchéité (30) repose contre la surface d'étanchéité (20) en réalisant une étanchéité dynamique. Un élément de précontrainte (32) déformable en caoutchouc élastique est disposé entre la structure de maintien de la garniture d'étanchéité (22) d'une pièce mécanique et la bague d'appui (28), afin de précontraindre la bague d'étanchéité (30) contre la surface d'étanchéité (20) dans une direction de précontrainte (52) orientée orthogonalement par rapport à la surface d'étanchéité (20). Lors d'une activation par la pression de l'élément de précontrainte (32) par une pression de service P qui règne du côté de la haute pression H, il se produit dans la direction de précontrainte (52) une déformation proportionnelle à la pression de service P de l'élément de précontrainte (32) qui s'appuie sur une surface d'appui (60) de l'une des deux pièces mécaniques (12, 14), de telle sorte que la bague d'appui (28) se rapproche de la surface d'étanchéité (20) avec sa branche d'appui (36) côté basse pression et s'éloigne de la surface d'étanchéité (20) avec sa branche d'appui (34) côté haute pression.
Also published as
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