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1. WO2019045590 - PRESSURE ACTUATED SEAL ARRANGEMENT

Publication Number WO/2019/045590
Publication Date 07.03.2019
International Application No. PCT/RU2017/000636
International Filing Date 31.08.2017
IPC
F01D 11/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
11Preventing or minimising internal leakage of working fluid, e.g. between stages
F01D 11/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
11Preventing or minimising internal leakage of working fluid, e.g. between stages
02by non-contact sealings, e.g. of labyrinth type
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 15/44 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
44Free-space packings
CPC
F01D 11/001
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
11Preventing or minimising internal leakage of working-fluid, e.g. between stages
001for sealing space between stator blade and rotor
F01D 11/025
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
11Preventing or minimising internal leakage of working-fluid, e.g. between stages
02by non-contact sealings, e.g. of labyrinth type
025Seal clearance control; Floating assembly; Adaptation means to differential thermal dilatations
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 15/445
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
44Free-space packings
445with means for adjusting the clearance
Applicants
  • SIEMENS AKTIENGESELLSCHAFT [DE]/[DE]
Inventors
  • MALININ, Vitaly Vladimirovich
  • NARAIANAMURTKHI, Kiran Kumar
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PRESSURE ACTUATED SEAL ARRANGEMENT
(FR) AGENCEMENT D'ÉTANCHÉITÉ ACTIONNÉ PAR PRESSION
Abstract
(EN)
The present invention provides a pressure actuated seal arrangement (1) to regulate flow of a working medium flow from a high pressure area (2) to a low pressure area (3) through a gap (6) is presented. The pressure actuated seal arrangement (1) comprises a first part (4) and a second part (5), wherein the first part and the second part are located opposite to each other and arranged in such way that there is a gap (6) formed between the first part and the second part., The first part (4) and the second part (6) can be configured to be relatively rotatable parts, e.g. a rotor and a stator, or relatively stationary parts, e.g. various housing parts or cooling air plenums etc, within the rotating machine, e.g. within a gas turbine. The second part (5) comprises at least one flexible sealing arrangement (7) with at least one sealing element (8) extending in the gap (6). The at least one flexible sealing arrangement (7) is interposed between a high pressure area (2) and a low pressure area (3). According to the present invention at least one flexible sealing arrangement (7) further comprises a group of elastic elements (9). The group of elastic elements (9) is arranged in the high pressure area (2), and is adapted to move the at least one sealing element (8) depending on a pressure drop between the high pressure area (2) and the low pressure area (3) to regulate the extension of the gap (6).
(FR)
La présente invention concerne un agencement d'étanchéité actionné par pression (1) pour réguler l'écoulement d'un flux de milieu de travail d'une zone à haute pression (2) à une zone à basse pression (3) à travers un espace. L'agencement d'étanchéité actionné par pression (1) comprend une première partie (4) et une seconde partie (5). La première partie et la seconde partie sont disposées d'une manière opposée l'une de l'autre et agencées de telle sorte qu'il y ait un espace (6) formé entre elles. La première partie (4) et la seconde partie (6) peuvent être configurées pour être des parties relativement rotatives, par exemple un rotor et un stator, ou des parties relativement fixes, par exemple diverses parties de boîtier ou des plénums d'air de refroidissement, etc, à l'intérieur de la machine rotative, par exemple à l'intérieur d'une turbine à gaz. La seconde partie (5) comprend au moins un agencement d'étanchéité souple (7) avec au moins un élément d'étanchéité (8) s'étendant dans l'espace (6). L'au moins un agencement d'étanchéité souple (7) est interposé entre une zone haute pression (2) et une zone basse pression (3). Selon la présente invention, au moins un agencement d'étanchéité souple (7) comprend en outre un groupe d'éléments élastiques (9). Le groupe d'éléments élastiques (9) est disposé dans la zone haute pression (2), et est conçu pour déplacer l'au moins un élément d'étanchéité (8) en fonction d'une chute de pression entre la zone haute pression (2) et la zone basse pression (3) pour réguler l'extension de l'espace (6).
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