EP2196635A2 - Dispositif destiné à éviter des pressions élevées dans un réservoir d'huile dans des conditions de g négatif - Google Patents

Dispositif destiné à éviter des pressions élevées dans un réservoir d'huile dans des conditions de g négatif Download PDF

Info

Publication number: EP2196635A2
Authority: EP; European Patent Office
Prior art keywords: oil tank; oil; conditions; tank; breather
Prior art date: 2008-11-25
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

Application number

EP20090010617

Other languages

German (de)

English (en)

Other versions

EP2196635B1 (fr

EP2196635A3 (fr

Inventor

Robert Dr. Angst

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.)

Rolls Royce Deutschland Ltd and Co KG

Original Assignee

Rolls Royce Deutschland Ltd and Co KG

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.)

2008-11-25

Filing date

2009-08-18

Publication date

2010-06-16

2009-08-18 Application filed by Rolls Royce Deutschland Ltd and Co KG filed Critical Rolls Royce Deutschland Ltd and Co KG

2010-06-16 Publication of EP2196635A2 publication Critical patent/EP2196635A2/fr

2011-06-15 Publication of EP2196635A3 publication Critical patent/EP2196635A3/fr

2015-11-11 Application granted granted Critical

2015-11-11 Publication of EP2196635B1 publication Critical patent/EP2196635B1/fr

Status Not-in-force legal-status Critical Current

2029-08-18 Anticipated expiration legal-status Critical

Links

Images

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/06—Means for keeping lubricant level constant or for accommodating movement or position of machines or engines
- F01M11/062—Accommodating movement or position of machines or engines, e.g. dry sumps
- F01M11/065—Position
- F01M11/067—Position inverted, e.g. for inverted flight
- 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
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86348—Tank with internally extending flow guide, pipe or conduit

Definitions

the invention relates to a device for avoiding high oil tank pressures under negative g conditions, and more particularly to an aircraft gas turbine oil tank according to the features of the preamble of claim 1.
the invention relates to an oil tank having a breather outlet pipe branched from an upper portion of the oil tank and connected to a breather, and a breather connection pipe connected to a lower portion of the tank.
breath pressure loss increases due to the blockage or blockage of the deaerator with oil. This leads to oil spills, contamination of bleed air, smell of oil in the aircraft cabin and sealing problems in the storage chambers of an aircraft gas turbine.
the invention has for its object to provide an aircraft gas turbine oil tank of the type described above, which has a high level of reliability with a simple design and simple, cost manufacturability and in particular is functional under negative g conditions.
an air duct is arranged in the upper region of the oil tank. This is open on both sides and extends into the breather outlet pipe, in which it protrudes and the other end of the air duct opens in the central region of the oil tank.
the inventive design prevents a high pressure in the oil tank results in negative g conditions.
the air duct pressure equalization takes place between the breather outlet pipe (the vent line of the oil tank) and the interior of the oil tank. This pressure equalization is performed by the air duct in an automatic manner.
the air flowing through the air duct expands in the area of the breather outlet pipe leading to the breather and thus reduces the flow area available for the oil flow to the breather in the breather outlet pipe.
the air guide tube according to the invention is thus a tube which extends from a vent opening (deaerator outlet tube or vent tube) of the oil tank into the interior of the oil tank.
the air duct is fixed in the oil tank so that the vent of the oil tank, especially under positive g conditions is not blocked.
the length of the air guide tube so that it extends below the oil level line under normal g conditions and thus dips into the oil.
the air flowing out through the air guide tube counteracts a strong increase in pressure in the oil tank, which is caused by the incoming ventilation volumes and return volumes of oil.
the air guide tube according to the invention is arranged stationarily in the oil tank and has no moving parts.
the arrangement can be made on a wall of the oil tank, it is possible to arrange the Heilleitrohr centrally in the oil tank.
a dimensioning of the diameter of the Heilleitrohrs can be easily adapted to the particular circumstances.
the inventive design minimizes the risk of wear and / or malfunction.
One Another advantage is that the Heilleitrohr invention can be realized very inexpensively and can also be retrofitted into existing tank designs.
the Fig. 1 to 4 schematically show an oil tank 1, at its upper portion a breather outlet pipe 2 is arranged, which leads to a breather (Breather).
a connecting pipe 6 is provided, which is connected for example to a return line.
oil 5 is in the lower region of the oil tank 1, the air above the oil 5 has a pressure P1 and in the breather outlet pipe 2 there is a pressure P2.
the air flow is shown by the arrow 4.
the 3 and 4 show an embodiment of the invention with a schematically illustrated Gutleitrohr 3.
Die Fig. 3 shows an operating condition with positive g conditions.
the oil 5 is in the lower region of the oil tank 1, the air duct 3 is "out of function".
the stated pressures prevail, where P1> P2.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Self-Closing Valves And Venting Or Aerating Valves (AREA)
Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

EP09010617.0A 2008-11-25 2009-08-18 Dispositif destiné à éviter des pressions élevées dans un réservoir d'huile dans des conditions de g négatif Not-in-force EP2196635B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE200810058981 DE102008058981A1 (de)	2008-11-25	2008-11-25	Vorrichtung zur Vermeidung von hohen Öltank-Drücken unter negativen g-Bedingungen

Publications (3)

Publication Number	Publication Date
EP2196635A2 true EP2196635A2 (fr)	2010-06-16
EP2196635A3 EP2196635A3 (fr)	2011-06-15
EP2196635B1 EP2196635B1 (fr)	2015-11-11

Family

ID=41694755

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP09010617.0A Not-in-force EP2196635B1 (fr)	2008-11-25	2009-08-18	Dispositif destiné à éviter des pressions élevées dans un réservoir d'huile dans des conditions de g négatif

Country Status (3)

Country	Link
US (1)	US8256458B2 (fr)
EP (1)	EP2196635B1 (fr)
DE (1)	DE102008058981A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US20140090930A1 (en)	2012-09-28	2014-04-03	United Technologies Corporation	Multiple reservoir lubrication system
US9366156B2 (en)	2012-09-28	2016-06-14	United Technologies Corporation	Axial sealing gravity based siphon system
US9416729B2 (en)	2013-03-21	2016-08-16	United Technologies Corporation	Oil tank mount with yoke
US9863324B2 (en)	2013-03-21	2018-01-09	United Technologies Corporation	Oil tank mount with stiffeners
US9086014B2 (en)	2013-03-21	2015-07-21	United Technologies Corporation	Oil tank mount with lock
US9925685B2 (en) *	2015-10-30	2018-03-27	Yamabiko Corporation	Chainsaw
US9981752B2 (en)	2016-09-27	2018-05-29	Pratt & Whitney Canada Corp.	Liquid tank system with over pressure protection

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3130022A (en) *	1960-03-22	1964-04-21	English Electric Co Ltd	Liquid reservoirs for aircraft
US4287913A (en) *	1979-09-29	1981-09-08	Rolls-Royce Limited	Tank suitable for holding liquids
JPS58113811U (ja) *	1982-01-28	1983-08-03	いすゞ自動車株式会社	エンジンのエア・ブリ−ド構造
DE19529733C1 (de) *	1995-08-12	1996-12-05	Mtu Friedrichshafen Gmbh	Schmiermittelversorgungssystem für Brennkraftmaschinen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2245198A (en) *	1938-10-18	1941-06-10	Wright Aeronautical Corp	Oil tank
DE896598C (de) *	1944-03-28	1953-11-12	Messerschmitt Boelkow Blohm	Fluessigkeitsbehaelter, insbesondere Betriebsmittelbehaelter fuer Flugzeugtriebwerke
US2679333A (en) *	1952-03-08	1954-05-25	Northrop Aircraft Inc	Variable length tank vent
US2982374A (en) *	1959-02-25	1961-05-02	United Aircraft Prod	Liquid storage tank for aircraft
US3049138A (en) *	1961-04-27	1962-08-14	United Aircraft Prod	Liquid storage tank
US3889705A (en) *	1973-08-30	1975-06-17	Northrop Corp	Hydraulic system reservoir having separate oil and air-oil chambers
JPS58113811A (ja)	1981-12-28	1983-07-06	Yutani Tekko Kk	回転体の回転数検出装置
FR2660280B1 (fr) *	1990-03-27	1995-05-05	Aerospatiale	Reservoir pour aeronef, notamment pour circuit hydraulique d'helicoptere.
GB0016196D0 (en) *	2000-06-30	2000-08-23	Lucas Industries Ltd	Oil system
US6463819B1 (en) *	2000-10-24	2002-10-15	Pratt & Whitney Canada Corp.	Uninterruptible oil supply system

2008
- 2008-11-25 DE DE200810058981 patent/DE102008058981A1/de not_active Withdrawn
2009
- 2009-08-18 EP EP09010617.0A patent/EP2196635B1/fr not_active Not-in-force
- 2009-09-09 US US12/556,224 patent/US8256458B2/en active Active

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3130022A (en) *	1960-03-22	1964-04-21	English Electric Co Ltd	Liquid reservoirs for aircraft
US4287913A (en) *	1979-09-29	1981-09-08	Rolls-Royce Limited	Tank suitable for holding liquids
JPS58113811U (ja) *	1982-01-28	1983-08-03	いすゞ自動車株式会社	エンジンのエア・ブリ−ド構造
DE19529733C1 (de) *	1995-08-12	1996-12-05	Mtu Friedrichshafen Gmbh	Schmiermittelversorgungssystem für Brennkraftmaschinen

Also Published As

Publication number	Publication date
US8256458B2 (en)	2012-09-04
DE102008058981A1 (de)	2010-05-27
US20100126589A1 (en)	2010-05-27
EP2196635B1 (fr)	2015-11-11
EP2196635A3 (fr)	2011-06-15

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