EP1899583A1 - Lubrication system - Google Patents
Lubrication systemInfo
- Publication number
- EP1899583A1 EP1899583A1 EP06761720A EP06761720A EP1899583A1 EP 1899583 A1 EP1899583 A1 EP 1899583A1 EP 06761720 A EP06761720 A EP 06761720A EP 06761720 A EP06761720 A EP 06761720A EP 1899583 A1 EP1899583 A1 EP 1899583A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lubricant
- tank
- rotatable
- shaft
- separator
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/18—Lubricating arrangements
Definitions
- the invention relates to a lubricant system according to the preamble of claim 1. Furthermore, the invention relates to a fluid-carrying, in particular a lubricant-carrying, assembly according to the preamble of claim 15th
- Lubricant systems known from practice for supplying lubricant to a consumer comprise, in addition to a lubricant tank, at least one lubricant pump for removing the lubricant from the lubricant tank and for conveying the lubricant in the direction of the consumer, and at least one lubricant pump for returning the lubricant from the consumer to the lubricant tank.
- a static lubricant separator is usually integrated in order to separate the air from the lubricant and to discharge it from the lubricant tank from the mixture of lubricant and air conveyed back into the lubricant tank.
- the air to be removed from the lubricant tank and venting air of the consumer are usually fed to a rotating lubricant separator, the air separated from the rotating lubricant separator being discharged from the lubricant system via a so-called top-breather line.
- the lubricant pumps and the lubricant separators include known from the art lubricant systems for supplying lubricant to a consumer lubricant filter and lubricant cooler, which are connected between the lubricant tank and the consumer.
- lubricant systems that provide lubricant supply to a consumer in a gas turbine aircraft engine
- extreme flight maneuvers such as inverted flight, parabolic flight with weightlessness or negative acceleration vector and extreme climb or extreme descent.
- lubricant systems usually employ a lubricant tank in which the lubricant is set in rotation by rotation of at least one drum integrated in the lubricant tank or by rotation of at least one blade integrated in the lubricant tank.
- the lubricant due to centrifugal forces or centrifugal forces on a rotationally symmetrical wall of the lubricant tank to the plant and can be promoted from there in the direction of the consumer. Air becomes In this way, it is centrifuged out of the lubricant and collects in the middle of the lubricant tank, from where the centrifuged air can be removed from the lubricant tank. In this case, it is possible to dispense with a static oil separator integrated in the lubricant tank. Lubricant systems with such a lubricant tank are known for example from DE 30 50 765 C2 and DE 34 05 366 C2.
- the present invention is based on the problem to provide a novel lubricant system and a novel fluid-carrying, in particular lubricant-carrying, assembly.
- a lubricant system according to claim 1.
- the or each rotating lubricant separator is drivable by the drive of the or each rotatable drum or the or each rotatable blade of the lubricant tank.
- the or each rotating lubricant separator it is proposed to drive at least the or each rotating lubricant separator via the drive of the lubricant tank.
- the or each rotating lubricant separator and the elements of the lubricant tank to be driven in rotation, namely the or each drum or the or each blade, mounted on a common shaft and driven by the common drive, optionally with the interposition of a transmission.
- LRU Line Replaceable ünit
- At least one lubricant pump for removing the lubricant from the lubricant tank and for conveying the lubricant in the direction of the consumer from the drive of the or each rotatable drum or the o- each rotatable blade of the lubricant tank is driven.
- At least one lubricant pump for returning the lubricant into the lubricant tank can be driven by the drive of the or each rotatable drum or the or each rotatable blade of the lubricant tank.
- the or each rotary lubricant separator and the or each lubricant pump for removing the lubricant from the lubricant tank and the or each lubricant pump for returning the lubricant in the lubricant tank and the or each rotatable drum or the or each rotatable blade are mounted on a common shaft and via the shaft either directly or indirectly drivable with the interposition of a transmission.
- the fluid-carrying, in particular a lubricant-carrying, assembly according to the invention is defined in claim 15.
- Fig. 1 is a schematic representation of an inventive assembly of a lubricant system according to the invention according to a first embodiment of the invention
- FIG. 2 is a schematic representation of an assembly according to the invention of a lubricant system according to the invention according to a second embodiment of the invention
- FIG. 3 is a schematic representation of an assembly according to the invention of a lubricant system according to the invention according to a third embodiment of the invention.
- Fig. 4 is a schematic representation of an inventive assembly of a lubricant system according to the invention according to a fourth embodiment of the invention.
- FIG. 1 shows a schematic representation of an assembly 10 according to the invention of a lubricant system according to the invention according to a first exemplary embodiment of the present invention.
- the assembly 10 illustrated in FIG. 1 comprises a lubricant tank 11, wherein rotating blades 12 are integrated into the lubricant tank 11 in order to set the lubricant in the lubricant tank 11 in rotation.
- a lubricant ring is formed on a rotationally symmetrical wall 13 of the lubricant tank 11, wherein due to the centrifugal forces acting on the lubricant, air is centrifuged out of the lubricant.
- the rotatably drivable blades 12 are mounted on a shaft 14 and driven by a non-illustrated drive from the shaft 14 from.
- the rotationally symmetrical wall 13 of the lubricant tank 11 is designed in the form of a truncated cone, wherein the lubricant can be removed in a portion 15 of the wall 13 by means of a lubricant pump 16 from the lubricant tank 11 and conveyed in the direction of a consumer, not shown.
- FIG. 1 also shows two lubricant pumps 17 and 18, which serve to return the lubricant from the consumer into the lubricant tank 11.
- a mixture of lubricant and air is returned to the lubricant tank 11, the air being centrifuged out of the lubricant by the rotation of the blades 12 integrated in the lubricant tank 11 and by the formation of the lubricant ring on the wall 13 of the lubricant tank 11 becomes.
- the air collects in a central portion of the lubricant tank 11 and is guided before being discharged from the lubricant tank 11 via a rotating lubricant separator 19. After passing through the rotating Schmierstoffabscheiders 19, the separated air from the lubricant via a so-called overboard vent line 20 is discharged.
- the components of a lubricant system illustrated in FIG. 1 are combined to form an assembly 10.
- the rotating lubricant separator 19 can be driven by the drive of the rotating blades 12 and, for this purpose, on the same shaft 14 Likewise, the lubricant pump 16 for removing the lubricant from the lubricant tank 11 from the drive of the blades 12 driven.
- the lubricant pumps 16, 17 and 18 as well as the rotating lubricant separator 19 are mounted on the shaft 14, on which also the integrated into the lubricant tank 11 blades 12 are mounted.
- the assembly 10 of the embodiment of FIG. 1 is characterized by a compact design and can be designed as a so-called Line Replaceable Unit (LRU). This makes it possible to replace the assembly 10 as a unit during maintenance of a lubricant system. Even under extreme operating conditions, such as with negative acceleration vectors or during extreme maneuvers, a continuous supply of lubricant to a consumer can be ensured with the aid of the assembly shown in FIG.
- the assembly 10 may be installed in a gas turbine aircraft engine such that the shaft 14 on which the blades 12, rotary lubricant separator 19, and lubricant pumps 16, 17, and 18 are mounted extend either longitudinally or transversely to an engine axis.
- the shaft 14 can be driven electrically, hydrostatically, hydrodynamically or pneumatically. It is also possible to mechanically drive the shaft 14 via an engine main shaft with the interposition of a transmission.
- Fig. 2 shows an assembly 21 for a lubricant system according to the invention according to a second embodiment of the invention, wherein the assembly 21 of Fig. 2 has the same components as the assembly 10 of Fig. 1. To avoid unnecessary repetition therefore for identical components same reference numerals used.
- the assembly 21 of FIG. 2 differs from the assembly 10 of FIG. 1 in that in the assembly 21 of FIG. 2, the pump unit comprising the lubricant pumps 16, 17 and 18 is integrated into the lubricant tank 11. As a result, the design can be reduced again.
- the blades 12, the rotating lubricant separator 19 and the lubricant pumps 16, 17 and 18 are in turn mounted on a common shaft 14 and are driven by a common drive.
- FIG. 2 shows that the overboard venting line 20 is sealed off from the rotating shaft 14 via a seal 22. Such a seal may also be present in the assembly 10 of FIG. 1.
- the overboard vent line 20 is preferably led upwards so that in static conditions in the lubricant tank 11, lying over the shaft 14 mirror of the lubricant can not lead to a loss of lubricant on the overboard vent line 20 .
- a grid or honeycomb structure may be arranged to prevent flashback into the lubricant tank 11.
- the overboard vent line 20 may be associated with a pressure regulating valve.
- the shaft 14 extends in the horizontal direction.
- Fig. 3 and 4 show embodiments of assemblies 23 and 24 with a vertically extending shaft 14, wherein in these assemblies 23 and 24, the lubricant flows back by gravity into the lubricant tank 11, which is why the lubricant pumps 17 and 18 for recycling of the lubricant in the lubricant tank 11 can be dispensed with.
- the rotating lubricant separator 19 and the lubricant pump 16 for removing the lubricant from the lubricant tank 11 are mounted on a common shaft 14 and driven by this shaft 14 from a common drive, said drive also to the drive also on the shaft 14 mounted blades 12 is used.
- the lubricant separator 19 is positioned above a dividing wall of the lubricant tank 11.
- ERSAIZBLATT (RULE 26) According to the embodiment of FIG. 4 can be omitted at a correspondingly high pressure on the wall 13 of the lubricant tank 11 at a high speed of the blades 12 and thus the voltage applied to the wall 13 lubricant ring on the lubricant pump 16 for removing the lubricant from the lubricant tank 11 be, with the lubricant flow can then be controlled by a corresponding pressure control valve 25.
- the rotating lubricant separator 19 in the exemplary embodiment of FIGS. 3 and 4 is positioned above the level of the stationary oil level forming in the lubricant tank 11 when the shaft 14 is stationary.
- the lubricant system according to the invention is preferably used in a gas turbine aircraft engine. It should be noted that, however, other applications of the assemblies shown in FIGS. 1 to 4 are possible. Thus, they can be used in lubricant systems of a stationary gas turbine or in lubricant systems of marine turbines. Also, the lubricant system of lubrication of electric generators, electric motors and piston engines for aircraft, ships, land vehicles or serve for stationary applications. Further, application in a hydraulic system or any other fluid circuit system is possible, particularly in those applications where acceleration vectors are variable or weightlessness occurs.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Lubricants (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005031804A DE102005031804A1 (en) | 2005-07-07 | 2005-07-07 | lubricant system |
PCT/DE2006/001116 WO2007006253A1 (en) | 2005-07-07 | 2006-06-29 | Lubrication system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1899583A1 true EP1899583A1 (en) | 2008-03-19 |
EP1899583B1 EP1899583B1 (en) | 2011-08-24 |
Family
ID=37192647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06761720A Expired - Fee Related EP1899583B1 (en) | 2005-07-07 | 2006-06-29 | Lubrication system |
Country Status (4)
Country | Link |
---|---|
US (1) | US8807282B2 (en) |
EP (1) | EP1899583B1 (en) |
DE (1) | DE102005031804A1 (en) |
WO (1) | WO2007006253A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007058954A1 (en) | 2007-12-07 | 2009-06-10 | Rolls-Royce Deutschland Ltd & Co Kg | Gas turbine oil supply system and method of operating a gas turbine bearing oil supply |
DE102008009822A1 (en) * | 2008-02-19 | 2009-08-20 | Rolls-Royce Deutschland Ltd & Co Kg | Gas turbine bearing oil system with improved oil return |
EP2199614B1 (en) * | 2008-12-22 | 2016-09-28 | Safran Aero Boosters SA | Combined pumping and separation machine for the oil circuit of a jet engine |
US10851941B2 (en) * | 2017-12-04 | 2020-12-01 | Rolls-Royce Corporation | Lubrication and scavenge system |
US10851689B2 (en) * | 2018-06-13 | 2020-12-01 | Rolls-Royce Corporation | Drainage path for a bearing sump in a vertically oriented turbine engine |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2888097A (en) * | 1957-07-12 | 1959-05-26 | Westinghouse Electric Corp | Lubrication system |
US3415383A (en) * | 1966-02-23 | 1968-12-10 | Gen Electric | Centrifugal separator |
US3906717A (en) * | 1974-03-21 | 1975-09-23 | Gen Motors Corp | Turbine engine oil sump emission control |
GB1508212A (en) * | 1975-02-10 | 1978-04-19 | Rolls Royce | Apparatus for separating suspension of liquids in gas |
DE3047719C2 (en) * | 1980-12-18 | 1983-10-27 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | Device for venting a liquid container, in particular a lubricant container for aircraft in extreme flight positions and conditions |
DE3050765C2 (en) | 1980-12-18 | 1985-07-18 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | Device for venting a liquid container, in particular an oil tank, taking into account extreme flight positions and conditions |
DE3405366A1 (en) | 1984-02-15 | 1985-08-22 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | LUBRICANT SUPPLY SYSTEM |
US6237322B1 (en) | 1999-06-21 | 2001-05-29 | Pratt & Whitney Canada Corp. | Oil pump |
EP1130221A1 (en) * | 2000-02-14 | 2001-09-05 | Techspace Aero S.A. | Method and device for aeronautic engine lubrication |
GB0206243D0 (en) * | 2002-03-16 | 2002-05-01 | Rolls Royce Plc | An air/oil separator |
-
2005
- 2005-07-07 DE DE102005031804A patent/DE102005031804A1/en not_active Withdrawn
-
2006
- 2006-06-29 EP EP06761720A patent/EP1899583B1/en not_active Expired - Fee Related
- 2006-06-29 US US11/994,980 patent/US8807282B2/en not_active Expired - Fee Related
- 2006-06-29 WO PCT/DE2006/001116 patent/WO2007006253A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2007006253A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1899583B1 (en) | 2011-08-24 |
WO2007006253A1 (en) | 2007-01-18 |
US8807282B2 (en) | 2014-08-19 |
US20080217105A1 (en) | 2008-09-11 |
DE102005031804A1 (en) | 2007-01-18 |
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