GB2250067A - Sealing apparatus - Google Patents

Sealing apparatus

Info

Publication number
GB2250067A
GB2250067A GB9119877A GB9119877A GB2250067A GB 2250067 A GB2250067 A GB 2250067A GB 9119877 A GB9119877 A GB 9119877A GB 9119877 A GB9119877 A GB 9119877A GB 2250067 A GB2250067 A GB 2250067A
Authority
GB
United Kingdom
Prior art keywords
ring
seal
shaft
sleeve
housing
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
GB9119877A
Other versions
GB2250067B (en
GB9119877D0 (en
Inventor
Norman Kenneth Bowers
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.)
Vinters Ltd
Original Assignee
Vickers PLC
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 Vickers PLC filed Critical Vickers PLC
Publication of GB9119877D0 publication Critical patent/GB9119877D0/en
Publication of GB2250067A publication Critical patent/GB2250067A/en
Application granted granted Critical
Publication of GB2250067B publication Critical patent/GB2250067B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • F16J15/002—Sealings comprising at least two sealings in succession
    • F16J15/006—Sealings comprising at least two sealings in succession with division of the pressure
    • 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
    • F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings

Abstract

A seal assembly for sealing a space between a rotary shaft (44) and a stationary member (10) includes a housing (66) having a bearing (90) that maintains the housing (66) true on the shaft (44). Seal assemblies (103, 105 and 107) axially spaced along the shaft (44) are connected via pressure relief valves (134) (Fig. 2) so that e.g. pressure above a predetermined limit across a first ring (103) passes to a second ring (105) and when the threshold at ring (105) is exceeded, pressure passes to third ring (107). In this way, at high pressures all three seal assemblies (103, 105 and 107) are active. A normally inactive back-up seal (109) may be provided. The seal assembly may be water lubricated. A split lap-jointed structure for a sleeve (110) forming part of the seal assemblies (103 to 109) and the curvature of the sleeve (110) relative to shaft diameter are also described. <IMAGE>
GB9119877A 1989-04-05 1991-09-17 Sealing apparatus Expired - Fee Related GB2250067B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8907627A GB2230063A (en) 1989-04-05 1989-04-05 Multi-element shaft seal

Publications (3)

Publication Number Publication Date
GB9119877D0 GB9119877D0 (en) 1991-11-27
GB2250067A true GB2250067A (en) 1992-05-27
GB2250067B GB2250067B (en) 1993-04-21

Family

ID=10654478

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8907627A Withdrawn GB2230063A (en) 1989-04-05 1989-04-05 Multi-element shaft seal
GB9119877A Expired - Fee Related GB2250067B (en) 1989-04-05 1991-09-17 Sealing apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB8907627A Withdrawn GB2230063A (en) 1989-04-05 1989-04-05 Multi-element shaft seal

Country Status (3)

Country Link
AU (1) AU5416290A (en)
GB (2) GB2230063A (en)
WO (1) WO1990012229A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2239136B (en) * 1989-10-24 1994-06-15 Minnesota Mining & Mfg Collar-like sealing element

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4210804A1 (en) * 1992-04-01 1993-10-07 Mtu Muenchen Gmbh Device for sealing a gap between angularly offset and fixed or movably arranged wall elements
DE19609899A1 (en) * 1996-03-13 1997-09-18 Wirth Co Kg Masch Bohr Device for producing an earth hole
FR2985763B1 (en) * 2012-01-16 2014-02-21 Snecma COAXIAL INTER-TREE SEALING DEVICE OF A TURBOMACHINE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2175868A (en) * 1936-10-30 1939-10-10 B F Sturtevant Co Packing
US3334906A (en) * 1965-02-18 1967-08-08 Koppers Co Inc Shaft seal
EP0125896A1 (en) * 1983-05-17 1984-11-21 JAMES WALKER &amp; COMPANY LIMITED Shaft seals

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB704032A (en) * 1900-01-01
US2759778A (en) * 1954-08-31 1956-08-21 Norma Hoffman Bearings Corp Sealed bearing
US3544118A (en) * 1968-10-01 1970-12-01 Koppers Co Inc Pressure balanced shaft seal
US3990679A (en) * 1975-03-20 1976-11-09 Gray Tool Company Stem sealing for high pressure valve or the like
EP0006311A1 (en) * 1978-06-09 1980-01-09 Holset Engineering Company Limited Sealing assembly
GB2151721A (en) * 1983-12-16 1985-07-24 Ford Motor Co Sealing ring relatively rotating machine parts

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2175868A (en) * 1936-10-30 1939-10-10 B F Sturtevant Co Packing
US3334906A (en) * 1965-02-18 1967-08-08 Koppers Co Inc Shaft seal
EP0125896A1 (en) * 1983-05-17 1984-11-21 JAMES WALKER &amp; COMPANY LIMITED Shaft seals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2239136B (en) * 1989-10-24 1994-06-15 Minnesota Mining & Mfg Collar-like sealing element

Also Published As

Publication number Publication date
GB2250067B (en) 1993-04-21
GB8907627D0 (en) 1989-09-13
AU5416290A (en) 1990-11-05
WO1990012229A1 (en) 1990-10-18
GB9119877D0 (en) 1991-11-27
GB2230063A (en) 1990-10-10

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940405