US2465908A - Accumulator bag - Google Patents

Accumulator bag Download PDF

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Publication number
US2465908A
US2465908A US498859A US49885943A US2465908A US 2465908 A US2465908 A US 2465908A US 498859 A US498859 A US 498859A US 49885943 A US49885943 A US 49885943A US 2465908 A US2465908 A US 2465908A
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Prior art keywords
bag
container
opening
storage device
secured
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Expired - Lifetime
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US498859A
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Mercier Jean
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    • 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
    • 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
    • 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
    • F15B2201/3152—Accumulator separating means having flexible separating means the flexible separating means being bladders
    • 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
    • F15B2201/3158—Guides for the flexible separating means, e.g. for a collapsed bladder
    • 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
    • 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
    • F15B2201/60—Assembling or methods for making accumulators
    • F15B2201/61—Assembling or methods for making separating means therefor

Definitions

  • This invention pertains to hydraulic storage dcvices and more particularly to the type including two variable volume chambers formed within a container by a bag shaped diaphragm, in which one chamber is to be filled with the fluid to be stored and the other with a gasusually air-under pressure.
  • the fluid to be stored is the oil or water for actuating hydraulic units and in practice the bag is generally filled with a gas and attached to the portion of the storage device which is normally the upper portion thereof while a passage member is provided in the opposite, or lower, portion for supply and discharge of a liquid.
  • storage devices of this type are subject to disturbances when they are operated while turned upside down. This usually happens to the storage devices when used on aircraft; therefore, the aforesaid disturbances may best be removed by containing the liquid inside said bag and retaining the gas outside thereof.
  • the interior of the bag is provided with an annular smoothly curved guiding member of a moderate mechanical resistance.
  • This guiding member is so positioned within the bag, approximately at the dividing section, that the bag forms into two halves, of which either side will be deformed but slightly and will be retained against the wall of the container while the other is free to advance and to retract therein.
  • each upper half will be folded down against its corresponding lower half, except for the portion surrounding the guiding member.
  • the present invention is further concerned with an improved structure at the end of the container where the .bag is to be introduced into and secured to the same.
  • the container is provided with 2. oval hole and the bag is secured to an oval duplex lid.
  • I designates the container and 2 the bag.
  • Bag 2 carries an annular guiding member 3 made of somewhat harder rubber or the like than the bag and integral therewith.
  • Conduit 4 connects container I to an auxiliary container from which a gas under pressure is supplied to container I or vice versa.
  • a passage member 6 formed with a plurality of very small holes is inserted into port 5 to protect bag 2 from injury when the latter completely occupies container I and tends to deform into any sizeable openings.
  • Guiding member 3 must be so positioned that it will divide bag 2 into two halves I and l of approximately equal shape and size.
  • Half-bag I will have very little deformation when the storage device is operated, while half bag 8 will expand and retract and will, when completely drained, conform to the position of the half bag 1, except for the portion surrounding member 3.
  • Half bags 1 and Bare shown in full lines in the position they occupy when container I is almost completely drained.
  • When fluid is admitted into container I to compress bag 2 half bag I is, practically, not affected and half bag 8 assumes t e s ape shown in dotted lines when bag 2 is drained.
  • the portion of guiding member 3 which is not secured to bag 2 must be smoothly curved and have a well polished surface.
  • the guiding portion proper 9 of member 3- i. e.. the portion around which the bag may fold up-has preferably a circular curvature whose diameter is, at least, twice as long as the bags thickness in that area.
  • From portion 9 to the opposite end member 3 has a conically tapered shape, while the surface not permanently secured to the bag has a slight concave curvature.
  • Container I is fitted with an opening II) which must be relatively large to permit the introduction of bag 2 with guiding member 3.
  • opening II which must be relatively large to permit the introduction of bag 2 with guiding member 3.
  • Opening ID has a cross section of oval shape.
  • the lid is composed of an interior portion II and an exterior portion I2, both having also an oval cross section and portion I2 having larger cross sectional dimensions than portion II. and openin Ill.
  • Portion II carries a tubular flange l3 traversing a hole in the center of portion I2 and projecting beyond the same.
  • Flange I3 is threaded on its outside so tnat a nut ll can be screwed on to draw both portions together.
  • Container I is reinforced along the circumference of opening I0 by a metal band I5 which is permanently secured to the area of container I adjacent opening Ill.
  • the remaining portion of band I5 projects into opening I0 and reduces the cross sectional dimensions thereof so as to make them smaller than the corresponding dimensions of lid-portion II.
  • the end face of bag 2 adjacent lid portion II is of increased thickness and so applied to the same that the whole peripheral area of portion II is surrounded on all sides by a layer of rubber or the like.
  • a liquid or a gas can be admitted to and exhausted from bag 2 through the hollow interior of flange I3.
  • a passage member I6 is inserted into the opening of flange I3 to the interior of container I to prevent bag 2 from being forced into flange I3 when the bag is completely drained.
  • the size of the area which has to be bonded depends upon the contemplated maximum pressure in the storage device.
  • container I is composed of two half shells
  • half bag I may be omitted and portion 8then assuming the function of a diaphragmmay be made to project to the outside and to be clampingly secured between the rims of the 4 two half shells when the storage device is assembled.
  • Hydraulic accumulator which comprises a container, a first opening in one portion thereof, another opening in the opposite portion of the same, a reinforcing band with an oval opening secured to the outside of said container over the area adjacent said first opening and projecting into the same, a passage member adapted to close said oval opening and including an interior element having slightly smaller cross sectional dimensions than said first opening, an external element having slightly larger cross sectional dimensions than said oval opening, a passage extending through the center of both said elements, means for clampingly securing both said elements together and to force the same to engage said band, and a bag made of a flexible and elastic material extending to the inside of said container and secured to said internal element so as to completely surround the peripheral area of the same.

Description

INKENTOR. Jean Meraer BY 44 ATTORNEY March 29, 1949. J. MERCIER 'ACCUHULATOR BAG Filed Aug. 16, 1943 Patented Mar. 29, 1949 UNITED STATES PATENT OFFICE ACCUMULATOR BAG Jean Mercier, New York, N. Y. Application August 16, 1943, Serial No. 498,859 1 Claim. (Cl. 138-30) This invention pertains to hydraulic storage dcvices and more particularly to the type including two variable volume chambers formed within a container by a bag shaped diaphragm, in which one chamber is to be filled with the fluid to be stored and the other with a gasusually air-under pressure.
The fluid to be stored is the oil or water for actuating hydraulic units and in practice the bag is generally filled with a gas and attached to the portion of the storage device which is normally the upper portion thereof while a passage member is provided in the opposite, or lower, portion for supply and discharge of a liquid. It has been observed that storage devices of this type are subject to disturbances when they are operated while turned upside down. This usually happens to the storage devices when used on aircraft; therefore, the aforesaid disturbances may best be removed by containing the liquid inside said bag and retaining the gas outside thereof.
It has been observed, however, that the usual bag is injured after a short time when operation 1' the storage device with the liquid contained within said bag is attempted.
It is an object of the present invention to devise a storage device which will be safe in operation when the liquid is inside of the bag but which will also serve satisfactorily with a gas inside said bag and the liquid in the chamber formed between the inside of the container and the outside of said bag.
To that end, the interior of the bag is provided with an annular smoothly curved guiding member of a moderate mechanical resistance. This guiding member is so positioned within the bag, approximately at the dividing section, that the bag forms into two halves, of which either side will be deformed but slightly and will be retained against the wall of the container while the other is free to advance and to retract therein. When the bag is completely drained, each upper half will be folded down against its corresponding lower half, except for the portion surrounding the guiding member.
The present invention is further concerned with an improved structure at the end of the container where the .bag is to be introduced into and secured to the same.
To that end the container is provided with 2. oval hole and the bag is secured to an oval duplex lid.
Further features of the present invention will become apparent from the following description of an embodiment thereof given by way of example and illustrated in the accompanying drawing.
In the drawing. I designates the container and 2 the bag. Bag 2 carries an annular guiding member 3 made of somewhat harder rubber or the like than the bag and integral therewith. Conduit 4 connects container I to an auxiliary container from which a gas under pressure is supplied to container I or vice versa. A passage member 6 formed with a plurality of very small holes is inserted into port 5 to protect bag 2 from injury when the latter completely occupies container I and tends to deform into any sizeable openings.
Guiding member 3 must be so positioned that it will divide bag 2 into two halves I and l of approximately equal shape and size. Half-bag I will have very little deformation when the storage device is operated, while half bag 8 will expand and retract and will, when completely drained, conform to the position of the half bag 1, except for the portion surrounding member 3. Half bags 1 and Bare shown in full lines in the position they occupy when container I is almost completely drained. When fluid is admitted into container I to compress bag 2, half bag I is, practically, not affected and half bag 8 assumes t e s ape shown in dotted lines when bag 2 is drained. The portion of guiding member 3 which is not secured to bag 2 must be smoothly curved and have a well polished surface.
The guiding portion proper 9 of member 3- i. e.. the portion around which the bag may fold up-has preferably a circular curvature whose diameter is, at least, twice as long as the bags thickness in that area.
From portion 9 to the opposite end member 3 has a conically tapered shape, while the surface not permanently secured to the bag has a slight concave curvature.
Container I is fitted with an opening II) which must be relatively large to permit the introduction of bag 2 with guiding member 3. In order to close opening Ill securely and conveniently,
notwithstanding the high values of pressure which may prevail when the storage device is in operation, a lid according to the following description has been found satisfactory.
Opening ID has a cross section of oval shape. The lid is composed of an interior portion II and an exterior portion I2, both having also an oval cross section and portion I2 having larger cross sectional dimensions than portion II. and openin Ill.
Portion II carries a tubular flange l3 traversing a hole in the center of portion I2 and projecting beyond the same. Flange I3 is threaded on its outside so tnat a nut ll can be screwed on to draw both portions together.
Container I is reinforced along the circumference of opening I0 by a metal band I5 which is permanently secured to the area of container I adjacent opening Ill. The remaining portion of band I5 projects into opening I0 and reduces the cross sectional dimensions thereof so as to make them smaller than the corresponding dimensions of lid-portion II.
The end face of bag 2 adjacent lid portion II is of increased thickness and so applied to the same that the whole peripheral area of portion II is surrounded on all sides by a layer of rubber or the like.
When the storage device is assembled nut I4 must be tightened until the peripheral portion of lid I I is firmly applied against band I5.
A liquid or a gas can be admitted to and exhausted from bag 2 through the hollow interior of flange I3. A passage member I6 is inserted into the opening of flange I3 to the interior of container I to prevent bag 2 from being forced into flange I3 when the bag is completely drained.
In the embodiment described above a complete bag 2 with its portions 1 and 8 was described and this is considered the preferred structure. However, if desired, a part of half bag I extending between opening I0 and a line I1 below and at a certain distance from guiding member 3 may be omitted providing the remainder of half bag I is bonded to the surface of container I.
The size of the area which has to be bonded depends upon the contemplated maximum pressure in the storage device.
Also, if container I is composed of two half shells, half bag I may be omitted and portion 8then assuming the function of a diaphragmmay be made to project to the outside and to be clampingly secured between the rims of the 4 two half shells when the storage device is assembled.
The foregoing description is not intended to limit the present invention which extends to all changes, modifications and equivalents within the scope of the appended claim.
What is claimed is:
Hydraulic accumulator which comprises a container, a first opening in one portion thereof, another opening in the opposite portion of the same, a reinforcing band with an oval opening secured to the outside of said container over the area adjacent said first opening and projecting into the same, a passage member adapted to close said oval opening and including an interior element having slightly smaller cross sectional dimensions than said first opening, an external element having slightly larger cross sectional dimensions than said oval opening, a passage extending through the center of both said elements, means for clampingly securing both said elements together and to force the same to engage said band, and a bag made of a flexible and elastic material extending to the inside of said container and secured to said internal element so as to completely surround the peripheral area of the same.
JEAN MERCER.
REFERENCES CITED The following references are ,of record 1n the file of this patent:
UNITED STATES PATENTS Number Name Date Re. 20,887 Mercier 0ct.-18, 1938 841,791 Lemp Jan. 22, 1907 2,105,160 Piquerez Jan. 11, 1938 2,273,457 Zimmerman Feb. 17, 1942 2,278,688 Caminez .Apr. 7, 1942 2,299,611 Clark Oct. 20, 1942 2,421,076 Linton May 27, 1947
US498859A 1943-08-16 1943-08-16 Accumulator bag Expired - Lifetime US2465908A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2532143A (en) * 1946-04-06 1950-11-28 Jack & Heintz Prec Ind Inc Accumulator
US2679997A (en) * 1950-09-23 1954-06-01 Edwin S Burrows Display device
US3067776A (en) * 1956-04-09 1962-12-11 Ideal Roller And Mfg Company Hydraulic accumulator
EP0218304A1 (en) * 1985-10-07 1987-04-15 Flamco B.V. Expansion tank with a bladder-type diaphragm
US5176178A (en) * 1991-02-20 1993-01-05 Aos Holding Company Accumulator with randomly uniplanar bladder collapse
CN110637164A (en) * 2017-06-29 2019-12-31 伊格尔工业股份有限公司 Energy accumulator

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US841791A (en) * 1901-07-27 1907-01-22 Gen Electric Accumulator for flash-boilers.
US2105160A (en) * 1935-12-17 1938-01-11 Piqueres Emile Apparatus for emptying drums containing very thick lubricants or other viscous materials
USRE20887E (en) * 1931-12-30 1938-10-18 Jean merder
US2273457A (en) * 1940-01-26 1942-02-17 Wingfoot Corp Safety tube
US2278688A (en) * 1941-07-09 1942-04-07 Air Associates Inc Accumulator
US2299611A (en) * 1942-06-03 1942-10-20 United Aircraft Prod Pressure accumulator
US2421076A (en) * 1942-09-04 1947-05-27 Bendix Aviat Corp Accumulator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US841791A (en) * 1901-07-27 1907-01-22 Gen Electric Accumulator for flash-boilers.
USRE20887E (en) * 1931-12-30 1938-10-18 Jean merder
US2105160A (en) * 1935-12-17 1938-01-11 Piqueres Emile Apparatus for emptying drums containing very thick lubricants or other viscous materials
US2273457A (en) * 1940-01-26 1942-02-17 Wingfoot Corp Safety tube
US2278688A (en) * 1941-07-09 1942-04-07 Air Associates Inc Accumulator
US2299611A (en) * 1942-06-03 1942-10-20 United Aircraft Prod Pressure accumulator
US2421076A (en) * 1942-09-04 1947-05-27 Bendix Aviat Corp Accumulator

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2532143A (en) * 1946-04-06 1950-11-28 Jack & Heintz Prec Ind Inc Accumulator
US2679997A (en) * 1950-09-23 1954-06-01 Edwin S Burrows Display device
US3067776A (en) * 1956-04-09 1962-12-11 Ideal Roller And Mfg Company Hydraulic accumulator
EP0218304A1 (en) * 1985-10-07 1987-04-15 Flamco B.V. Expansion tank with a bladder-type diaphragm
US4784181A (en) * 1985-10-07 1988-11-15 Flamco B.V. Expansion tank with a bladder-type diaphragm
US5176178A (en) * 1991-02-20 1993-01-05 Aos Holding Company Accumulator with randomly uniplanar bladder collapse
CN110637164A (en) * 2017-06-29 2019-12-31 伊格尔工业股份有限公司 Energy accumulator
EP3647605A4 (en) * 2017-06-29 2021-03-03 Eagle Industry Co., Ltd. Accumulator
US11149754B2 (en) 2017-06-29 2021-10-19 Eagle Industry Co., Ltd. Accumulator

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