US2239481A - Accumulator for liquids under pressure - Google Patents

Accumulator for liquids under pressure Download PDF

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Publication number
US2239481A
US2239481A US243455A US24345538A US2239481A US 2239481 A US2239481 A US 2239481A US 243455 A US243455 A US 243455A US 24345538 A US24345538 A US 24345538A US 2239481 A US2239481 A US 2239481A
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Prior art keywords
accumulator
under pressure
stem
liquid
diaphragm
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Expired - Lifetime
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US243455A
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Christensen Alfredo Hiram Hunt
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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
    • 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
    • F15B2201/315—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/86035—Combined with fluid receiver
    • Y10T137/86043—Reserve or surge receiver

Definitions

  • the present invention relates to a novel accumulator for liquids under pressure, wherein use is made of compressed air as an elastic means to maintain constant pressure.
  • Fi 1 shows a vertical medial section of the hydraulic accumulator according to the invention.
  • Fig. 2 illustrates schematically. as an example
  • the upper chamber 6 where the liquid under pressure accumulates is in constant communication, by way of the holes 5 (Fig. 1) and a port I, with a general pressure line I (Fig. 2) of an installation in which are connected the pump 26 and working apparatus such as a press 19.
  • the lower chamber 23 (Fig. 1) of the accumulator is in constant communication, by way of a channel 22, a space 2
  • This receptacle of adequate dimensions is filled with air, or a gas, at a pressure equal to that to which the liquid accumulated within the chamber 6 is to be subjected.
  • a stem l3 slidable within limits corresponding to the height of the chamber its travel being'limited in an upward direction by a nut l6, and in a downward direction by a disc or plate I4.
  • the said stem is urged towards its upper position, as shown in the drawing, by a helical spring I5 arranged within the stem and bearing against the bottomof a small air-tight chamber l8.
  • the purpose of providing this stem consists in actuating, at the extreme points of its travel and with the aid of a slot, an electric switch 3
  • the primary object of the disc M (Fig. 1) is to provide ample supporting surface for the diaphragm I! and, further, in the extreme lower position of thestem, to be interposed between the port 22 and the said diaphragm H so as to avoid the destruction of the diaphragm against the opening 22 by action of the liquid under pressure, in the case that the apparatus should become accidentally completely filled with liquid.
  • a stem 8 terminating in a disc I and maintained in position by a spring 30 the travel of which is limited by the said disc and the nut 9.
  • the sole object of this stem and disc is to cause the latter to be interposed, in a manner similar to that described with reference to the disc I and if by accident it should be required, between the port 5 and the diaphragm ll, thus avoiding damage to the opening 6 by action of the air under pressure.
  • the accumulator according to the invention shows the advantage that, due to the use of a diaphragm which is substituted for a piston, and of the compressed air which is substituted for the usual counterweight, I do away with the considerable variation in pressure due to friction of the pistons and inertia of the counterweigh'ts, which impart abrupt blows to the system. Further, leakage is prevented since there are no packings nor stuffingboxes.
  • the apparatus according to the invention being light and of very small dimensions, the mounting thereof is extremely easy and simpie.
  • the present accumulator also lacks of the disadvantages of compressed air accumulators already known wherein the air is in direct contact with the liquid, and as a result the air or gas becomes dissolved or emulsioned in part with the liquid, it being thus necessary'to' periodically supply air by means of a compressor, which causes the operation to become complicated and costly.
  • the accumulator according to the inveuv tion also lacks the disadvantages inherent in compressed air accumulators with piston free or separation between the liquid and the air. the .said piston creating friction and, further, it does not form an eflicient or perfect seal between both fluids, such as is the case with a diaphragm.
  • Apparatus for maintaining a uniform pressure in a fluid pressure supply line comprising, a pump for forcing liquid into said line, a motor for driving said pump, a container, an elastic diaphragm dividing said container into two chambers, a pipe connecting said liquid supply line with one of said chambers, a source of fluid pressure connected with the other chamber, a movable stem terminating in the last mentioned chamber adjacent said diaphragm, yieldable 2.
  • a pump for forcing liquid into said line
  • a motor for driving said pump
  • a container for driving said pump
  • a container for driving said pump
  • a container for driving said pump
  • a container for driving said pump
  • a container for driving said pump
  • a container for driving said pump
  • a container for driving said pump
  • a container having a channel therein for admitting fluid pressure to one of said chambers
  • a stem arranged for sliding movement within said channel
  • said container having a port therein for admitting fluid from said supply line to the other of said chambers
  • a disc carried by said stem adapted to cover said channel when the diaphragm is moved towards said channel
  • yieldable means urging the disc of the stem into engagement with the diaphragm, a circuit for supplying current to said motor, and an electric switch in said circuit actuated by movement of said stem for opening and closing said circuit.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Reciprocating Pumps (AREA)

Description

Filed Dec. 1, 1938 Patented Apr. 22, 1941 2,239,481 ACCUMULATOR FOB LIQUIDS UNDER PRESSURE All'redo Hiram Hunt Christensen, Buenos Alres,
Argentina Application December 1, 1938, Serlal No. 243,455 In Argentina May 4, 1938 2 Claims.
The present invention relates to a novel accumulator for liquids under pressure, wherein use is made of compressed air as an elastic means to maintain constant pressure.
For a better understanding of the invention the same is described in the following specification taken in conjunction with the drawing in which the same reference characters denote similar or like parts. Fi 1 shows a vertical medial section of the hydraulic accumulator according to the invention.
Fig. 2 illustrates schematically. as an example,
complete equipment embodying the accumulator according to the invention.
The hydraulic accumulator which forms the object of this invention comprises a container, or receptacle, horizontally divided into two chambets 6 and 23 by means of an elastic diaphragm H.
The upper chamber 6 where the liquid under pressure accumulates is in constant communication, by way of the holes 5 (Fig. 1) and a port I, with a general pressure line I (Fig. 2) of an installation in which are connected the pump 26 and working apparatus such as a press 19.
The lower chamber 23 (Fig. 1) of the accumulator is in constant communication, by way of a channel 22, a space 2| and a port I9,with an airtight receptacle 24. This receptacle of adequate dimensions is filled with air, or a gas, at a pressure equal to that to which the liquid accumulated within the chamber 6 is to be subjected.
In this chamber 23 (Fig. 1) there is located a stem l3 slidable within limits corresponding to the height of the chamber its travel being'limited in an upward direction by a nut l6, and in a downward direction by a disc or plate I4. The said stem is urged towards its upper position, as shown in the drawing, by a helical spring I5 arranged within the stem and bearing against the bottomof a small air-tight chamber l8.
The purpose of providing this stem consists in actuating, at the extreme points of its travel and with the aid of a slot, an electric switch 3| provided within the air-tight box 20 and the leadwires of which are brought out through insulated bushings and connected to a 220 volt supply line and to the motor 28 of the liquid injector pump 26 (Fig. 2).
The primary object of the disc M (Fig. 1) is to provide ample supporting surface for the diaphragm I! and, further, in the extreme lower position of thestem, to be interposed between the port 22 and the said diaphragm H so as to avoid the destruction of the diaphragm against the opening 22 by action of the liquid under pressure, in the case that the apparatus should become accidentally completely filled with liquid.
Similarly, within the upper chamber 6 is located a stem 8 terminating in a disc I and maintained in position by a spring 30 the travel of which is limited by the said disc and the nut 9.
The sole object of this stem and disc is to cause the latter to be interposed, in a manner similar to that described with reference to the disc I and if by accident it should be required, between the port 5 and the diaphragm ll, thus avoiding damage to the opening 6 by action of the air under pressure.
During operation, when liquid is drawn oil due to the functioning of the press 26 (Fig. 2), or any other similar device the diaphragm ll (Fig. 1) is caused to move upwards actuated :by the air in chamber 23 and, as a consequence, the stem II also rises until it reaches its upper limit and actuates the switch 3| closing the circuit to the motor which then starts operation of the pump.
When the pressure of the liquid forced into the line I by operation of the pump 26 rises above the pressure of the receptacle 24 liquid enters the chamber 6 and the stem I3 is moved downwardly to open the switch in the chamber 26 whereby the operation of the pump ceases.
As distinguished from accumulators provided with a piston and counterweight, the accumulator according to the invention, shows the advantage that, due to the use of a diaphragm which is substituted for a piston, and of the compressed air which is substituted for the usual counterweight, I do away with the considerable variation in pressure due to friction of the pistons and inertia of the counterweigh'ts, which impart abrupt blows to the system. Further, leakage is prevented since there are no packings nor stuffingboxes. The apparatus according to the invention being light and of very small dimensions, the mounting thereof is extremely easy and simpie.
The present accumulator also lacks of the disadvantages of compressed air accumulators already known wherein the air is in direct contact with the liquid, and as a result the air or gas becomes dissolved or emulsioned in part with the liquid, it being thus necessary'to' periodically supply air by means of a compressor, which causes the operation to become complicated and costly. The accumulator according to the inveuv tion also lacks the disadvantages inherent in compressed air accumulators with piston free or separation between the liquid and the air. the .said piston creating friction and, further, it does not form an eflicient or perfect seal between both fluids, such as is the case with a diaphragm.
What I claim is:
1. Apparatus for maintaining a uniform pressure in a fluid pressure supply line comprising, a pump for forcing liquid into said line, a motor for driving said pump, a container, an elastic diaphragm dividing said container into two chambers, a pipe connecting said liquid supply line with one of said chambers, a source of fluid pressure connected with the other chamber, a movable stem terminating in the last mentioned chamber adjacent said diaphragm, yieldable 2. In apparatus for maintaining a uniform pressure in a fluid pressure supply line, a. pump for forcing liquid into said line, a motor for driving said pump, a container, an elastic diaphragm dividing said container into two chambers, said container having a channel therein for admitting fluid pressure to one of said chambers, a stem arranged for sliding movement within said channel, said container having a port therein for admitting fluid from said supply line to the other of said chambers, a disc carried by said stem adapted to cover said channel when the diaphragm is moved towards said channel,
yieldable means urging the disc of the stem into engagement with the diaphragm, a circuit for supplying current to said motor, and an electric switch in said circuit actuated by movement of said stem for opening and closing said circuit.
ALFREDO HIRAM HUNT CHRISTENSEN.
US243455A 1938-05-04 1938-12-01 Accumulator for liquids under pressure Expired - Lifetime US2239481A (en)

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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2420432A (en) * 1944-01-28 1947-05-13 United Aircraft Corp Electrical injection timing
US2443628A (en) * 1943-09-07 1948-06-22 Stearns Roger Mfg Company Vacuum pan discharge valve control
US2453732A (en) * 1944-05-22 1948-11-16 Hydraulic Control Engineering Hydraulic cycling system
US2472944A (en) * 1947-03-31 1949-06-14 Furer Gyroscopically stabilized camera boom
US2514632A (en) * 1947-05-22 1950-07-11 Cook Electric Co Liquid level control
US2555427A (en) * 1947-06-23 1951-06-05 Bendix Aviat Corp Hydraulic pumping system with preloaded hydraulic shock absorber
US2558960A (en) * 1950-01-28 1951-07-03 Int Harvester Co Hydraulic power transmitting device
US2560676A (en) * 1948-05-14 1951-07-17 Calvin W White Pneumatic-hydraulic system for well pumping or drilling units
US2564285A (en) * 1948-03-11 1951-08-14 Samuel V Smith Pneumatic-hydraulic system for operating well pumping equipment
US2578959A (en) * 1948-10-30 1951-12-18 George E Failing Supply Compan Hydraulic system for drilling rigs
US2588048A (en) * 1940-01-04 1952-03-04 New Britain Machine Co Pressure converter system and apparatus therefor
US2617259A (en) * 1940-01-04 1952-11-11 New Britain Machine Co Master cylinder power system
US2628476A (en) * 1949-11-10 1953-02-17 Ross E Grier Hydraulic starting system for internal-combustion engines
US2642945A (en) * 1943-10-20 1953-06-23 United Aircraft Corp Propeller pitch changing mechanism
US2959131A (en) * 1957-05-13 1960-11-08 Plenty And Son Ltd Pumps
US2970441A (en) * 1961-02-07 Hydraulic power plant
US3018628A (en) * 1957-12-27 1962-01-30 Sigma Remote control installations for the valves of marine tankers
US3084513A (en) * 1960-03-08 1963-04-09 Gen Controls Co Electrohydraulic actuator
US3327474A (en) * 1965-10-22 1967-06-27 Schiffer Maximilian Hydraulic driving device for tools or the like, particularly for the movable mold parts of plastic die casting machines
US3690617A (en) * 1970-01-20 1972-09-12 Lloyd V Butler Water counterweight system for theatrical props and curtains
US4848097A (en) * 1988-07-18 1989-07-18 Roberts Mark J Apparatus for transferring water from a container to a refrigerator ice maker

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970441A (en) * 1961-02-07 Hydraulic power plant
US2588048A (en) * 1940-01-04 1952-03-04 New Britain Machine Co Pressure converter system and apparatus therefor
US2617259A (en) * 1940-01-04 1952-11-11 New Britain Machine Co Master cylinder power system
US2443628A (en) * 1943-09-07 1948-06-22 Stearns Roger Mfg Company Vacuum pan discharge valve control
US2642945A (en) * 1943-10-20 1953-06-23 United Aircraft Corp Propeller pitch changing mechanism
US2420432A (en) * 1944-01-28 1947-05-13 United Aircraft Corp Electrical injection timing
US2453732A (en) * 1944-05-22 1948-11-16 Hydraulic Control Engineering Hydraulic cycling system
US2472944A (en) * 1947-03-31 1949-06-14 Furer Gyroscopically stabilized camera boom
US2514632A (en) * 1947-05-22 1950-07-11 Cook Electric Co Liquid level control
US2555427A (en) * 1947-06-23 1951-06-05 Bendix Aviat Corp Hydraulic pumping system with preloaded hydraulic shock absorber
US2564285A (en) * 1948-03-11 1951-08-14 Samuel V Smith Pneumatic-hydraulic system for operating well pumping equipment
US2560676A (en) * 1948-05-14 1951-07-17 Calvin W White Pneumatic-hydraulic system for well pumping or drilling units
US2578959A (en) * 1948-10-30 1951-12-18 George E Failing Supply Compan Hydraulic system for drilling rigs
US2628476A (en) * 1949-11-10 1953-02-17 Ross E Grier Hydraulic starting system for internal-combustion engines
US2558960A (en) * 1950-01-28 1951-07-03 Int Harvester Co Hydraulic power transmitting device
US2959131A (en) * 1957-05-13 1960-11-08 Plenty And Son Ltd Pumps
US3018628A (en) * 1957-12-27 1962-01-30 Sigma Remote control installations for the valves of marine tankers
US3084513A (en) * 1960-03-08 1963-04-09 Gen Controls Co Electrohydraulic actuator
US3327474A (en) * 1965-10-22 1967-06-27 Schiffer Maximilian Hydraulic driving device for tools or the like, particularly for the movable mold parts of plastic die casting machines
US3690617A (en) * 1970-01-20 1972-09-12 Lloyd V Butler Water counterweight system for theatrical props and curtains
US4848097A (en) * 1988-07-18 1989-07-18 Roberts Mark J Apparatus for transferring water from a container to a refrigerator ice maker

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