GB837528A - Improvements in or relating to hydraulic cylinder and piston assemblies such as hydropneumatic accumulators - Google Patents

Improvements in or relating to hydraulic cylinder and piston assemblies such as hydropneumatic accumulators

Info

Publication number
GB837528A
GB837528A GB26772/58A GB2677258A GB837528A GB 837528 A GB837528 A GB 837528A GB 26772/58 A GB26772/58 A GB 26772/58A GB 2677258 A GB2677258 A GB 2677258A GB 837528 A GB837528 A GB 837528A
Authority
GB
United Kingdom
Prior art keywords
ring
cylinder
piston
spring
pressure
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
GB26772/58A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB837528A publication Critical patent/GB837528A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/24—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with rigid separating means, e.g. pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/205—Accumulator cushioning means using gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/21—Accumulator cushioning means using springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
    • F15B2201/312—Sealings therefor, e.g. piston rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/41—Liquid ports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/415—Gas ports

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

837,528. Pistons. GRATZMULLER, J. L. Aug. 20, 1958 [Aug. 23, 1957], No. 26772/58. Class 122 (1). [Also in Group XXIX] A piston and cylinder assembly for a freepiston type hydropneumatic accumulator comprises a piston 2 having a rebate in which is mounted an elastically and plastically deformable sealing ring 4 of a material which, in order that the ring may be deformed into sealing contact with the cylinder 1 by a spring 5 acting through a compressor member 6, needs to be subjected to a pressure at least equal to the maximum operating pressure in the cylinder ; further, the material of the ring has a coefficient of friction of the order of 0.05. The sealing ring 4 may be made of polytetrafluoroethylene and is formed with cross-sectional dimensions small in relation to the cylinder diameter, the spring 5 being suitably designed to load the ring so that it makes adequate sealing contact around its complete circumference. The physical properties of the material of the ring are such that when the liquid in the accumulator has been exhausted and the piston 2 abuts the cylinder head, the pressure of the gas acting on the member 6 in addition to the spring pressure does not cause the ring to be extruded between the piston and cylinder. The spring 5 acts between an abutment plate 13 retained on the piston rod 12 by a nut or circlip 14 and is located by portions 8, 9. The member 6 is located on a spigot 7 and, in order to permit freedom of angular movement, its locating diameter is radiused at 11 and its outer diameter is suitably tapered. Specifications 702,088 and 712,577 are referred to.
GB26772/58A 1957-08-23 1958-08-20 Improvements in or relating to hydraulic cylinder and piston assemblies such as hydropneumatic accumulators Expired GB837528A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR837528X 1957-08-23

Publications (1)

Publication Number Publication Date
GB837528A true GB837528A (en) 1960-06-15

Family

ID=9298635

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26772/58A Expired GB837528A (en) 1957-08-23 1958-08-20 Improvements in or relating to hydraulic cylinder and piston assemblies such as hydropneumatic accumulators

Country Status (1)

Country Link
GB (1) GB837528A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105090137A (en) * 2014-05-20 2015-11-25 福特全球技术公司 Self-orienting piston spring accumulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105090137A (en) * 2014-05-20 2015-11-25 福特全球技术公司 Self-orienting piston spring accumulator

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