CA2528659A1 - Air-oil seal - Google Patents

Air-oil seal Download PDF

Info

Publication number
CA2528659A1
CA2528659A1 CA002528659A CA2528659A CA2528659A1 CA 2528659 A1 CA2528659 A1 CA 2528659A1 CA 002528659 A CA002528659 A CA 002528659A CA 2528659 A CA2528659 A CA 2528659A CA 2528659 A1 CA2528659 A1 CA 2528659A1
Authority
CA
Canada
Prior art keywords
runner
labyrinth seal
bearing assembly
group
shaft bearing
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
Application number
CA002528659A
Other languages
French (fr)
Other versions
CA2528659C (en
Inventor
Kin-Leung Cheung
William Hung
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.)
Pratt and Whitney Canada Corp
Original Assignee
Pratt and Whitney Canada Corp
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 Pratt and Whitney Canada Corp filed Critical Pratt and Whitney Canada Corp
Publication of CA2528659A1 publication Critical patent/CA2528659A1/en
Application granted granted Critical
Publication of CA2528659C publication Critical patent/CA2528659C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F16J15/44—Free-space packings
    • F16J15/445—Free-space packings with means for adjusting the clearance

Abstract

An air-oil seal having a runner surface comprising at least one component selected from the group consisting of: polyetheretherketone; polyetherimide;
polyphenylene sulfide; and polyetherketoneketone.

Claims (13)

1. A labyrinth seal comprising at least one knife edge and a runner surface, the runner surface including a material selected from the group consisting of:
polyetheretherketone; polyetherimide; polyphenylene sulfide; and polyetherketoneketone.
2. The labyrinth seal as defined in claim 1, wherein the runner surface comprises a composite thermal plastic having at least one component selected from the group.
3. The labyrinth seal as defined in claim 1, wherein the composite thermal plastic is reinforced.
4. The labyrinth seal as defined in claim 1, wherein the runner surface is an insert disposed within a metallic labyrinth seal runner.
5. The labyrinth seal as defined in claim 4, wherein the material has a predetermined thermal expansion coefficient which substantially corresponds to that of the metallic labyrinth seal runner.
6. A shaft assembly comprising a rotatable shaft supporting an oiled component and at least one labyrinth seal providing air-oil sealing between the rotating shaft and an adjacent element, the labyrinth seal having at least one knife edge and a runner mounted for relative rotation, the runner having a runner surface facing the knife edge comprised of a material selected from the group consisting of: polyetheretherketone; polyetherimide;
polyphenylene sulfide; and polyetherketoneketone.
7. The shaft bearing assembly as defined in claim 6, wherein the runner surface comprises a composite thermal plastic having at least one component selected from the group.
8. The shaft bearing assembly as defined in claim 7, wherein the composite thermal plastic is reinforced.
9. The shaft bearing assembly as defined in claim 6, wherein the adjacent element is a stationary casing.
10. The shaft bearing assembly as defined in claim 6, wherein the adjacent element is a second rotatable shaft concentric with the rotatable shaft.
11. The shaft bearing assembly as defined in claim 6, wherein the runner is metallic and the runner surface is an insert mounted thereto.
12. The shaft bearing assembly as defined in claim 11, wherein the composite thermal plastic has a predetermined thermal expansion coefficient which substantially corresponds to that of the metallic runner.
13. A method of sealing an air-oil interface, the method comprising the steps of:
providing a labyrinth seal with a runner material on a runner surface thereof;
and selecting the runner material from the group consisting of:
polyetheretherketone; polyetherimide; polyphenylene sulfide; and polyetherketoneketone.
CA2528659A 2004-12-20 2005-11-28 Air-oil seal Expired - Fee Related CA2528659C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/014,972 US7025356B1 (en) 2004-12-20 2004-12-20 Air-oil seal
US11/014,972 2004-12-20

Publications (2)

Publication Number Publication Date
CA2528659A1 true CA2528659A1 (en) 2006-06-20
CA2528659C CA2528659C (en) 2012-08-14

Family

ID=36127612

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2528659A Expired - Fee Related CA2528659C (en) 2004-12-20 2005-11-28 Air-oil seal

Country Status (2)

Country Link
US (1) US7025356B1 (en)
CA (1) CA2528659C (en)

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US7625177B2 (en) * 2006-08-31 2009-12-01 Pratt & Whitney Canada Cororation Simple axial retention feature for abradable members
US8167534B2 (en) * 2006-09-14 2012-05-01 Solar Turbines Inc. Seal for a turbine engine
US7726021B2 (en) * 2006-09-28 2010-06-01 Pratt & Whitney Canada Corp. Labyrinth seal repair
US9127770B2 (en) * 2006-12-19 2015-09-08 Rolls-Royce Corporation Tuned fluid seal
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JP5101317B2 (en) * 2008-01-25 2012-12-19 三菱重工業株式会社 Seal structure
US8567564B2 (en) * 2008-03-20 2013-10-29 United Technologies Corporation Non-interrupted oil supply for gas turbine engine
US9061469B2 (en) * 2008-03-25 2015-06-23 United Technologies Corporation Fluid barriers with flexible backing material and methods of repairing and manufacturing the same
DE102008055948A1 (en) * 2008-11-05 2010-05-06 Bosch Mahle Turbo Systems Gmbh & Co. Kg Loading device, particularly exhaust gas turbocharger for motor vehicle, comprises axle mounted in bearing housing, compressor wheel and turbine wheel
FR2961260B1 (en) * 2010-06-15 2014-05-02 Turbomeca NON-LUBRICATED TURBOMOTIC ARCHITECTURE
US8770928B2 (en) 2010-12-21 2014-07-08 Hamilton Sundstrand Corporation Air cycle machine seal plate and seal land
US8821113B2 (en) 2010-12-21 2014-09-02 Hamilton Sundstrand Corporation Air cycle machine seal land
US10119476B2 (en) 2011-09-16 2018-11-06 United Technologies Corporation Thrust bearing system with inverted non-contacting dynamic seals for gas turbine engine
GB2495092B (en) * 2011-09-28 2014-01-01 Rolls Royce Plc Sealing arrangement
US10995846B2 (en) 2016-09-23 2021-05-04 Bell Helicopter Textron Inc. Fan with labyrinth seal for prevention of water damage to a gearbox
CN109611536A (en) * 2018-12-28 2019-04-12 南京高速齿轮制造有限公司 Wind-driven generator wheel-box high speed shaft seal structure
US11867180B2 (en) 2019-03-22 2024-01-09 Copeland Industrial Lp Seal assembly for high pressure single screw compressor
US11193389B2 (en) 2019-10-18 2021-12-07 Raytheon Technologies Corporation Fluid cooled seal land for rotational equipment seal assembly
US11313280B2 (en) * 2020-07-16 2022-04-26 Raytheon Technologies Corporation Gas turbine engine including seal assembly with abradable coating and cutter
US11293351B2 (en) * 2020-07-16 2022-04-05 Raytheon Technologies Corporation Gas turbine engine including seal assembly with abradable coating including magnetic particles embedded in polymer
US11313281B2 (en) * 2020-07-16 2022-04-26 Raytheon Technologies Corporation Gas turbine engine including seal assembly with abradable coating including magnetic particles

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US3547455A (en) 1969-05-02 1970-12-15 Gen Electric Rotary seal including organic abradable material
US3843278A (en) 1973-06-04 1974-10-22 United Aircraft Corp Abradable seal construction
US4248566A (en) * 1978-10-06 1981-02-03 General Motors Corporation Dual function compressor bleed
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Also Published As

Publication number Publication date
US7025356B1 (en) 2006-04-11
CA2528659C (en) 2012-08-14

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20210831

MKLA Lapsed

Effective date: 20191128