GB809897A - Shaft sealing arrangement - Google Patents

Shaft sealing arrangement

Info

Publication number
GB809897A
GB809897A GB2376557A GB2376557A GB809897A GB 809897 A GB809897 A GB 809897A GB 2376557 A GB2376557 A GB 2376557A GB 2376557 A GB2376557 A GB 2376557A GB 809897 A GB809897 A GB 809897A
Authority
GB
United Kingdom
Prior art keywords
pressure
leakage
sump
valve
space
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.)
Expired
Application number
GB2376557A
Inventor
Arthur Philip Glenny
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.)
Sperry Gyroscope Co Ltd
Original Assignee
Sperry Gyroscope Co Ltd
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 Sperry Gyroscope Co Ltd filed Critical Sperry Gyroscope Co Ltd
Priority to GB2376557A priority Critical patent/GB809897A/en
Publication of GB809897A publication Critical patent/GB809897A/en
Expired 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
    • F16J15/004—Sealings comprising at least two sealings in succession forming of recuperation chamber for the leaking fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)

Abstract

809,897. Stuffing-box substitutes. SPERRY GYROSCOPE CO. Ltd. July 26, 1957, No. 23765/57. Class 122 (5). A sealing arrangement for an axially movable shaft, for example the piston rod 3 of an hydraulic jack, comprises two axially spaced seals 11 and 12, a leakage space 15 between the seals connected to a sump 18 by a passage 16 controlled by a valve 17 that automatically closes when the pressure in the leakage space exceeds a predetermined value, and a leakdetecting device, for example a pressure gauge 21 or a pressure-operated warning indicator, responsive to the pressure in the leakage space. Normally fluid leakage past the inner seal 11 drains to the sump but if the leakage becomes sufficient to build up the pressure in space 15 to a predetermined value, the valve 17 closes against its spring and the seal failure condition is indicated on the pressure gauge. The outer seal 12 may be periodically tested by turning a cock 22 to close the connection between the sump 18 and the passage 16 and connect the latter to the source 7 of operating fluid pressure for the jack. The ball valve 7 may be replaced by a fine restrictor valve capable of passing normal leakage but insufficient to relieve pressure build up due to inner seal failure.
GB2376557A 1957-07-26 1957-07-26 Shaft sealing arrangement Expired GB809897A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2376557A GB809897A (en) 1957-07-26 1957-07-26 Shaft sealing arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2376557A GB809897A (en) 1957-07-26 1957-07-26 Shaft sealing arrangement

Publications (1)

Publication Number Publication Date
GB809897A true GB809897A (en) 1959-03-04

Family

ID=10200961

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2376557A Expired GB809897A (en) 1957-07-26 1957-07-26 Shaft sealing arrangement

Country Status (1)

Country Link
GB (1) GB809897A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2313603A1 (en) * 1975-06-05 1976-12-31 United Technologies Corp HYDRAULIC SHOCK ABSORBER WITH REDUNDANT SEALING MEANS
WO1993019301A1 (en) * 1992-03-20 1993-09-30 Mannesmann Rexroth Gmbh Hydraulic driving device with a cylinder
WO2016198793A1 (en) * 2015-06-12 2016-12-15 Poclain Hydraulics Industrie Drained-chamber hydraulic system
CN113280991A (en) * 2021-04-27 2021-08-20 西北机电工程研究所 Dynamic sealing performance testing tool for piston rod sealing element

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2313603A1 (en) * 1975-06-05 1976-12-31 United Technologies Corp HYDRAULIC SHOCK ABSORBER WITH REDUNDANT SEALING MEANS
WO1993019301A1 (en) * 1992-03-20 1993-09-30 Mannesmann Rexroth Gmbh Hydraulic driving device with a cylinder
US5469704A (en) * 1992-03-20 1995-11-28 Mannesmann Rexroth Gmbh Hydraulic drive apparatus comprising a cylinder
WO2016198793A1 (en) * 2015-06-12 2016-12-15 Poclain Hydraulics Industrie Drained-chamber hydraulic system
FR3037354A1 (en) * 2015-06-12 2016-12-16 Poclain Hydraulics Ind HYDRAULIC SYSTEM WITH DRAINED CHAMBER
CN113280991A (en) * 2021-04-27 2021-08-20 西北机电工程研究所 Dynamic sealing performance testing tool for piston rod sealing element
CN113280991B (en) * 2021-04-27 2023-08-04 西北机电工程研究所 Dynamic sealing performance testing tool for piston rod sealing element

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