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GB661110A - Improvements relating to sealing devices used in reversing gears for screws with rotatable blades - Google Patents

Improvements relating to sealing devices used in reversing gears for screws with rotatable blades

Info

Publication number
GB661110A
GB661110A GB19369/48A GB1936948A GB661110A GB 661110 A GB661110 A GB 661110A GB 19369/48 A GB19369/48 A GB 19369/48A GB 1936948 A GB1936948 A GB 1936948A GB 661110 A GB661110 A GB 661110A
Authority
GB
United Kingdom
Prior art keywords
rings
shoulder
cup
cylinder
ring
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
GB19369/48A
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.)
Aalborg Vaerft AS
Original Assignee
Aalborg Vaerft AS
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 Aalborg Vaerft AS filed Critical Aalborg Vaerft AS
Publication of GB661110A publication Critical patent/GB661110A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/32—Other parts
    • B63H23/36—Shaft tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/06—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical
    • B63H3/08—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
    • B63H3/081—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid actuated by control element coaxial with the propeller shaft
    • B63H3/082—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid actuated by control element coaxial with the propeller shaft the control element being axially reciprocatable
    • 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
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/38—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member sealed by a packing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/06—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical
    • B63H3/08—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
    • B63H2003/088—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid characterised by supply of fluid actuating medium to control element, e.g. of hydraulic fluid to actuator co-rotating with the propeller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/32—Other parts
    • B63H23/321—Bearings or seals specially adapted for propeller shafts
    • B63H2023/327—Sealings specially adapted for propeller shafts or stern tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Sealing Devices (AREA)

Abstract

661,110. Stuffing-box substitutes. AALBORG VAERFT AKTIESELSKABET, and BLACHE, H. H. July 19, 1948 [July 18, 1947], No. 19369/48. Class 122(v) In a hydraulic reversing gear for screws with rotatable blades in which the blade adjustment is effected by a rod sliding in the screw shaft and attached to a piston in a cylinder which has covers provided with extensions secured to the screw shaft and an intermediate shaft respectively for rotation of the cylinder and in which pressure liquid is supplied to the cylinder through annular sealing devices placed about the extensions and between weardishes rotating with the cylinder, the sealing device has a stationary member 5 with an internal annular shoulder 11, sealing rings are disposed two 6, 7 between each side of the shoulder 11 and one of two weardishes 3, 4, a number of pins 15 are fitted into holes in the shoulder 11 and enter holes in the inner rings 7 to prevent rotation of the rings 6, 7, a number of coil springs 9 are housed in the shoulder 11 and in the inner rings 7 to force the outer rings 6 against the weardishes 3, 4 and a sealing cup 13 is interposed between the rings 6, 7 to abut by its peripheral margin the internal annular surface of the member 5 and the peripheral surface the recessed inner ring 7, while the inner rings 7 are unitary or radially divided in two and the outer rings 6 are radially divided in two or more parts. In an embodiment the surfaces of the rings 6, 7 between which the cup 13 is interposed are conical and pins 16 fitted in holes in both rings 6, 7 prevent their relative rotation. The peripheral surface of each composite ring comprising the rings 6, 7 is spherical about a centre in the shaft axis and in the median of the composite ring. Passages may be provided from the spring holes 12 in the rings 7 to allow pressure fluid to act upon the cup 13. Radial lubricating grooves provided in the surfaces of the rings 6, terminate short of the outer edge of the rings 6 and have shallow extensions in the direction of rotation. In a modification the surfaces of the rings between which the cup is interposed are plane and the rings are assembled by screws, being maintained in coaxial relationship by an annular shoulder on one ring. Each ring may be divided into halves being assembled with the joints relatively displaced
GB19369/48A 1947-07-18 1948-07-19 Improvements relating to sealing devices used in reversing gears for screws with rotatable blades Expired GB661110A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK661110X 1947-07-18

Publications (1)

Publication Number Publication Date
GB661110A true GB661110A (en) 1951-11-14

Family

ID=8152094

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19369/48A Expired GB661110A (en) 1947-07-18 1948-07-19 Improvements relating to sealing devices used in reversing gears for screws with rotatable blades

Country Status (1)

Country Link
GB (1) GB661110A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3330562A (en) * 1964-03-12 1967-07-11 Brunette Machine Works Ltd Rotary air seal
GB2123098A (en) * 1982-07-01 1984-01-25 Aes Eng Ltd Mechanical shaft seals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3330562A (en) * 1964-03-12 1967-07-11 Brunette Machine Works Ltd Rotary air seal
GB2123098A (en) * 1982-07-01 1984-01-25 Aes Eng Ltd Mechanical shaft seals

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