US3918497A - Pressure accumulator - Google Patents

Pressure accumulator Download PDF

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Publication number
US3918497A
US3918497A US466007A US46600774A US3918497A US 3918497 A US3918497 A US 3918497A US 466007 A US466007 A US 466007A US 46600774 A US46600774 A US 46600774A US 3918497 A US3918497 A US 3918497A
Authority
US
United States
Prior art keywords
bladder
thickened rim
mouth
container
annular
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 - Lifetime
Application number
US466007A
Other languages
English (en)
Inventor
Otmar Schon
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.)
GREE HYDRAULICS OF CALIFORNIA Inc
S-P MANUFACTURING Corp A CORP OF OHIO
Original Assignee
Greer Hydraulics Inc
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 Greer Hydraulics Inc filed Critical Greer Hydraulics Inc
Application granted granted Critical
Publication of US3918497A publication Critical patent/US3918497A/en
Assigned to GREE HYDRAULICS OF CALIFORNIA, INC. reassignment GREE HYDRAULICS OF CALIFORNIA, INC. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: GREER HYDRAULICS, INCORPORATED, GREER HYDRAULICS OF CALIFORNIA, INC.
Assigned to VSI CORPORATION reassignment VSI CORPORATION MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE 12-16-81 Assignors: GREER HYDRAULICS, INCORPORATED
Assigned to FIGGIE INTERNATIONAL INC., A CORP. OF DE reassignment FIGGIE INTERNATIONAL INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: VSI CORPORATION
Assigned to S-P MANUFACTURING CORPORATION, THE, A CORP. OF OHIO reassignment S-P MANUFACTURING CORPORATION, THE, A CORP. OF OHIO ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FIGGIE INTERNATIONAL INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
    • F15B1/12—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means attached at their periphery
    • F15B1/14—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means attached at their periphery by means of a rigid annular supporting member
    • 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
    • F16J12/00—Pressure vessels in general
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/04—Devices damping pulsations or vibrations in fluids
    • F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
    • F16L55/05—Buffers therefor
    • F16L55/052—Pneumatic reservoirs
    • 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
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3151—Accumulator separating means having flexible separating means the flexible separating means being diaphragms or membranes
    • 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
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3156—Accumulator separating means having flexible separating means characterised by their attachment
    • 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
    • F15B2201/411—Liquid ports having valve means
    • 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
    • F15B2201/4155—Gas ports having valve means
    • 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
    • F15B2201/43—Anti-extrusion means
    • F15B2201/435—Anti-extrusion means being fixed to the separating means

Definitions

  • container has a deformable bladder of resilient material positioned therein, said bladder having a large [52] US. Cl 138/30; 92/92 mouth with a thickened rim portion in which is [5 ll Int. Cl.2 F16L 55/04 molded the lower edge of an annular metal supporting Field of Search 138/30; 92/9 93 R member which extends outwardly from the rim with Y the free edge portion of said supporting member being References Cited secured to the rim of the mouth of the container UNITED STATES PATENTS I which is closed by a suitable cover.
  • a bladder of resilient deformable material having a large mouth is secured to i the mouth of the container by means of an annular su-pporting member, the upper edge of which issecured to the mouth of the container and the lower edge of which is molded in the mouth of the bladder, when the bladder folds in operation, a sharp pleat is likely to form adjacent the lower edge .of the annular supporting member with resultant rupture of the bladder.
  • FIG. 1 is a longitudinal sectional view of the accumulator incorporating the invention.
  • FIG. 2 is a detail view of the invention on a larger scale.
  • the invention illustratively is incorporated in a pressure accumulator which, as shown in FIG. 1, comprises a container of rigid material such as steel capable of withstanding relatively high pressure.
  • the container comprises two complementary shells 11 and 12, the former comprising the cap or cover member for the latter which defines the body portion of the accumulator.
  • the rims 13, 14 of the shells are beveled as shown to define a V-shaped annular groove when the rims are aligned with their inner edges 15, 16 in juxtaposition.
  • Each of the shells ll, 12 has a rounded end 17, 18 so that the accumulator is a substantially cylindrical unit having substantially hemispherical ends, each of which has a port 19, 21 therethrough which are axially aligned.
  • the port 19 is adapted to receive a suitable gas valve (not shown) and the port 21 is adapted to receive a fitting 22.
  • the fitting 22 comprises a cylindrical sleeve affixed as by welding in port 21.
  • a deformable partition Positioned in the container 10 is a deformable partition, illustratively in the form of a bladder 23 of rubber or similar material having like characteristics.
  • the bladder is closed at one end as at 24 and such closed end has secured thereon are preferably molded integral therewith a rigid button or valve member 25 which is axially aligned with the bladder and designed to move against the valve seat 26 defined by the inner end of fitting 22 when the bladder is expanded to close port 21.
  • the mouth 27 of the bladder 23 has a thickened rim portion 28 to which an annular supporting member 29 is affixed by being molded therein as shown.
  • the supporting member 29 is of relatively thin resilient sheet material such as sheet steel having an inwardly inclined mounting portion 31 at its lower end and an outwardly inclined retaining portion 32 at its upper end.
  • the junction 33 between retaining portion 32 and the'cylindrical mid-portion 34 of the supporting member 29 is seated on the inner edge 16 of rim 14 of shell 12 and the rim 13 of shell 11 seats on the top surface of retaining portion 32, the rims 13, 14
  • the thickened -rim 28 has a cylindricalouter surface 36-terminating as at junction 37 just slightly below thelower edge 38 of mounting portion 31.
  • the outer surface-39 of the thickened rim 28 between junction-37 and the beginning 41 of the reduced thickness wall'portion of the bladder 23 is frustoconical being curved as shown.
  • the inner surface of the thickened rim 28 at the upper portion thereof is beveled outwardly as at 42, such beveled portion terminating at a region 43 substantially in the plane of the lower end 38 of mounting portion 31.
  • annular bead 45 Molded integrally with the thickened rim 11 of the bladder 23 on the inner surface thereof is an annular bead 45 which is semi-circular in cross section and which extends from the beginning 41 of the reduced wall thickness portion of bladder 23 to the lower edge 46 of the cylindrical inner wall surface 47 of thickened rim 28.
  • the bladder In use of the accumulator, the bladder is charged with gas under pressure, and thereupon a fluid such as oil under pressure is forced through the fitting 22 to charge the accumulator.
  • the root end of the fold will be substantially curved so no sharp pleat will occur which could cause breaking of the bladder.
  • a pressure vessel comprising a container of rigid material having one end open and the other end closed, said closed end having an axial port therethrough, a deformable bladder of resilient material in said container, said bladder having a mouth at one end with a thickened rim portion and a reduced thickness wall portion extending from said thickened rim portion and being closed at its other end, an annular metal supporting member having an annular mounting portion of its lower edge embedded in the thickened rim portion and having an annular mounting portion at its upper edge secured to the mouth of said container, means secured to said container mouth to cover the latter, said thickened rim portion of said bladder having an annular bead on its inner surface molded integrally therewith, said annular bead lying in a plane between the lower extremity of said mounting portion and the junction between the end of said reduced thickness wall portion of said bladder and the thickened rim portion thereof.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Diaphragms And Bellows (AREA)
US466007A 1973-05-30 1974-05-01 Pressure accumulator Expired - Lifetime US3918497A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2327461A DE2327461A1 (de) 1973-05-30 1973-05-30 Hydropneumatischer druckspeicher

Publications (1)

Publication Number Publication Date
US3918497A true US3918497A (en) 1975-11-11

Family

ID=5882526

Family Applications (1)

Application Number Title Priority Date Filing Date
US466007A Expired - Lifetime US3918497A (en) 1973-05-30 1974-05-01 Pressure accumulator

Country Status (7)

Country Link
US (1) US3918497A (enrdf_load_stackoverflow)
JP (1) JPS5842361B2 (enrdf_load_stackoverflow)
CA (1) CA1004110A (enrdf_load_stackoverflow)
DE (1) DE2327461A1 (enrdf_load_stackoverflow)
FR (1) FR2231901B1 (enrdf_load_stackoverflow)
GB (1) GB1477488A (enrdf_load_stackoverflow)
SE (1) SE408578B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4181156A (en) * 1978-12-04 1980-01-01 Greer Hydraulics, Inc. Pressure accumulator with anti-extrusion gas charging valve assembly
US4798180A (en) * 1979-12-17 1989-01-17 Aisin Seiki Kabushiki Kaisha Self-contained hydraulic lash adjuster
US5188204A (en) * 1988-03-17 1993-02-23 Automotive Products Plc Pre-filled power hydraulic system
US6789576B2 (en) * 2000-05-30 2004-09-14 Nhk Spring Co., Ltd Accumulator
US20090057690A1 (en) * 2007-01-22 2009-03-05 Cree, Inc. Wafer level phosphor coating technique for warm light emitting diodes

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2604959C2 (de) * 1975-02-24 1986-11-13 Greer Hydraulics, Inc., Los Angeles, Calif. Vorrichtung zur Herstellung eines Druckspeicherbehälters
JPS52142432A (en) * 1976-05-21 1977-11-28 Mitsubishi Electric Corp Display device
DE2623951C3 (de) * 1976-05-28 1982-12-02 Integral Hydraulik & Co, 4000 Düsseldorf Hydropneumatischer Druckspeicher
JPS6015964U (ja) * 1983-07-12 1985-02-02 株式会社　京浜精機製作所 液体燃料供給装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421076A (en) * 1942-09-04 1947-05-27 Bendix Aviat Corp Accumulator
US2480558A (en) * 1944-03-09 1949-08-30 Bendix Aviat Corp Accumulator
US2932321A (en) * 1952-12-23 1960-04-12 Mercier Jean Pressure accumulator
US3420273A (en) * 1965-11-30 1969-01-07 Greer Hydraulics Inc Pressure accumulator
US3500866A (en) * 1967-08-01 1970-03-17 Greer Hydraulics Inc Pressure vessel
US3654964A (en) * 1969-03-03 1972-04-11 Jean Mercier Pressure vessels
US3674054A (en) * 1970-03-06 1972-07-04 Jacques H Mercier Pressure vessel
US3690347A (en) * 1970-12-16 1972-09-12 Greer Hydraulics Inc Pressure vessel

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421076A (en) * 1942-09-04 1947-05-27 Bendix Aviat Corp Accumulator
US2480558A (en) * 1944-03-09 1949-08-30 Bendix Aviat Corp Accumulator
US2932321A (en) * 1952-12-23 1960-04-12 Mercier Jean Pressure accumulator
US3420273A (en) * 1965-11-30 1969-01-07 Greer Hydraulics Inc Pressure accumulator
US3500866A (en) * 1967-08-01 1970-03-17 Greer Hydraulics Inc Pressure vessel
US3654964A (en) * 1969-03-03 1972-04-11 Jean Mercier Pressure vessels
US3674054A (en) * 1970-03-06 1972-07-04 Jacques H Mercier Pressure vessel
US3690347A (en) * 1970-12-16 1972-09-12 Greer Hydraulics Inc Pressure vessel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4181156A (en) * 1978-12-04 1980-01-01 Greer Hydraulics, Inc. Pressure accumulator with anti-extrusion gas charging valve assembly
US4798180A (en) * 1979-12-17 1989-01-17 Aisin Seiki Kabushiki Kaisha Self-contained hydraulic lash adjuster
US5188204A (en) * 1988-03-17 1993-02-23 Automotive Products Plc Pre-filled power hydraulic system
US6789576B2 (en) * 2000-05-30 2004-09-14 Nhk Spring Co., Ltd Accumulator
US20090057690A1 (en) * 2007-01-22 2009-03-05 Cree, Inc. Wafer level phosphor coating technique for warm light emitting diodes

Also Published As

Publication number Publication date
SE7407039L (enrdf_load_stackoverflow) 1974-12-02
DE2327461A1 (de) 1975-01-09
FR2231901B1 (enrdf_load_stackoverflow) 1979-02-16
JPS5031415A (enrdf_load_stackoverflow) 1975-03-27
SE408578B (sv) 1979-06-18
FR2231901A1 (enrdf_load_stackoverflow) 1974-12-27
JPS5842361B2 (ja) 1983-09-19
CA1004110A (en) 1977-01-25
GB1477488A (en) 1977-06-22

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Legal Events

Date Code Title Description
AS Assignment

Owner name: GREE HYDRAULICS OF CALIFORNIA, INC., A CORP. OF CA

Free format text: MERGER;ASSIGNOR:GREER HYDRAULICS, INCORPORATED, GREER HYDRAULICS OF CALIFORNIA, INC.;REEL/FRAME:004014/0964

Effective date: 19811218

AS Assignment

Owner name: VSI CORPORATION

Free format text: MERGER;ASSIGNOR:GREER HYDRAULICS, INCORPORATED;REEL/FRAME:004013/0645

Effective date: 19820204

AS Assignment

Owner name: FIGGIE INTERNATIONAL INC., 1000 VIRGINIA CENTER PA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:VSI CORPORATION;REEL/FRAME:004822/0665

Effective date: 19871218

Owner name: FIGGIE INTERNATIONAL INC., A CORP. OF DE,VIRGINIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VSI CORPORATION;REEL/FRAME:004822/0665

Effective date: 19871218

AS Assignment

Owner name: S-P MANUFACTURING CORPORATION, THE, A CORP. OF OHI

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FIGGIE INTERNATIONAL INC.;REEL/FRAME:005017/0972

Effective date: 19890106