GB863527A - Improved fluid sealing device - Google Patents

Improved fluid sealing device

Info

Publication number
GB863527A
GB863527A GB37968/59A GB3796859A GB863527A GB 863527 A GB863527 A GB 863527A GB 37968/59 A GB37968/59 A GB 37968/59A GB 3796859 A GB3796859 A GB 3796859A GB 863527 A GB863527 A GB 863527A
Authority
GB
United Kingdom
Prior art keywords
fluid
pressure
gap
sealing gap
face
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
GB37968/59A
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.)
Allis Chalmers Corp
Original Assignee
Allis Chalmers 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 Allis Chalmers Corp filed Critical Allis Chalmers Corp
Publication of GB863527A publication Critical patent/GB863527A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/44Free-space packings
    • F16J15/441Free-space packings with floating ring

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

863,527. Stuffing-box substitutes. ALLISCHALMERS MANUFACTURING CO. Nov. 9, 1959 [Nov. 17, 1958], No. 37968/59. Class 122 (5). A fluid sealing device 19 between the shaft 14 of a centrifugal pump 11 and its housing 16 comprises an annular member 21 mounted on the shaft for axial movement relative thereto under the action of a pressure differential on the end faces 34, 38 and 42 of the member so as to provide an end sealing gap 37 between the faces 34, 38 and the face 36 of a stationary member 32, and an axial sealing gap 24 provided between the member 21 and the housing 16 in fluid communication with the end sealing gap and in series therewith in the direction of fluid flow between the zones of different pressures so that, in operation, fluid flows from the zone of high pressure acting on the end face 42 through the axial sealing gap 24 to the end sealing gap 37 and thereby maintains the latter at a constant dimension. The axial sealing gap 24 is defined between the annular member 21, which is coupled by a bellows 22 to a member 17 secured to the shaft, and a number of radially movable rings 27 which together form a labyrinth-type seal for determining the pressure differential between the two end faces 42 and 34, 38 of the annular member. In operation, when the pump is started, fluid passes through the gap 24 into a chamber 39 where the pressure of the fluid then builds up until it equals that acting on the end 42 and since the area of the face 38 of the annular member is arranged to be greater than the area of the end face 42, the surface 34 is lifted away from the surface 36 of the member 32. The fluid then flows through the gap into a low-pressure zone 46 thereby causing the pressure in the chamber 39 to drop below that acting on the end 42 but since the surface area 34 is now additionally subjected to this pressure, the gap 37 is maintained constant. Instead of using the fluid medium being pumped as the sealing medium, a fluid medium may be introduced for this purpose at a pressure above that of the pump system.
GB37968/59A 1958-11-17 1959-11-09 Improved fluid sealing device Expired GB863527A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US863527XA 1958-11-17 1958-11-17

Publications (1)

Publication Number Publication Date
GB863527A true GB863527A (en) 1961-03-22

Family

ID=22198025

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37968/59A Expired GB863527A (en) 1958-11-17 1959-11-09 Improved fluid sealing device

Country Status (1)

Country Link
GB (1) GB863527A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4272084A (en) * 1979-04-30 1981-06-09 Guy F. Atkinson Company High pressure shaft seal
WO2002002973A1 (en) * 2000-06-30 2002-01-10 Van Doorne's Transmissie B.V. A sealing device with a flanged bush

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4272084A (en) * 1979-04-30 1981-06-09 Guy F. Atkinson Company High pressure shaft seal
WO2002002973A1 (en) * 2000-06-30 2002-01-10 Van Doorne's Transmissie B.V. A sealing device with a flanged bush

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