US1773821A - Hydraulic accumulator - Google Patents
Hydraulic accumulator Download PDFInfo
- Publication number
- US1773821A US1773821A US314824A US31482428A US1773821A US 1773821 A US1773821 A US 1773821A US 314824 A US314824 A US 314824A US 31482428 A US31482428 A US 31482428A US 1773821 A US1773821 A US 1773821A
- Authority
- US
- United States
- Prior art keywords
- cylinder
- piston
- valves
- valve
- accumulator
- 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
Links
Images
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
- F15B2201/30—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
- 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
- F15B2201/41—Liquid ports
- F15B2201/413—Liquid ports having multiple 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
Definitions
- Our invention relates to hydraulic accumulators, more especially of the kind in which a piston is arranged for free reciprocation within the cylinder of the accumulator, being acted upon on one side by the liquid and on the other side by compressedair so as to separate the liquid and air spaces.
- the valves'or slides which serve to throw the pressure liquid pump in and out of operation, are controlled by the piston, as it moves in the cylinder.
- V Fig. 1 being an axial section of the accumu lator as a Whole
- Fig. 2 is an end view
- Fig. 3 a development of a circular section parallel to the accumulator axis taken on the line AB in Fig. 2.
- Fig.4 is an axial section of the bottom part of the second form
- Fig. 5 is a similar view of the third form.
- 1 is the accumulator cylinder
- 2 is the compressed air space
- 3 is the liquid space
- 4- is the piston separating them.
- 5 is the piston rod and 6 and ,7 are two abutments fixed to the rod and serving, when acted upon by the movable piston 4, to displace the rod 5 in one or the other direction.
- the rod 5 having a nut 8 mounted at its bottom end will act on the hollow control member 10.
- 9 is a stuffing box through which the rod 5 extends.
- On the outer end of the control member'lO is mounted a controlling disc 11 which projects above the pins of the valves, which are disposed in the bottom of the cylinder 1 with their axes in parallelto the cylinder axis.
- the manually operated valve 12 serves for throwing the apparatus in and out of operation, respectively.
- 13 is a valve serving to connect-the liquid space 3 of the cylinder through conduit 14with another conduit 15 leading to the cylinder of a servomotor or to the means for reversing the valve of the pump (not shown) which forces liquid intothe cylinder through pipe 16.
- V 17 is a valve serving to connect the cylinder of the servomotor with the conduits 18 and 19, the latter serving as an exhaust.
- 20 is a safety valve which will connect the liquid space of the cylinder with the exhaust, whenever the apparatus should get out of order.
- valves 13, 17 and 20 are disposed within the bottom of cylinder 1 in a position at right angles to its axis and are controlled by a control member 22 having cam faces formed thereon which are in contact with the valve pins. These cam faces are formed in such manner that vhenever the piston 4 approaches the right end position, Without, however, having reached it, the pin of valve 13 Will be lifted While valve 17 which controls he exhaust from the pump valve or controlling piston, is closed. ⁇ Vhile these valves are being acted upon, the pin of the safety valve 20 is still spaced from its cam on the controlling member so far that it will be lifted only if the other valves have been operated and the piston 4 should still continue on its stroke.
- valves are controlled by a slide 1O which is operated by the rod 5 as described With reference to Figs. l t, the valves being replaced by a system of conduits controlled by the slide 10 in a manner Well known per se.
- Hydraulic accumulator comprising a. cylinder, a piston in this cylinder freely movable for reciprocation. valves in the bottom of said cylr ed means arranged for op eration b said piston. for controlling said valves.
- Hydraulic accumulator comprising a cylinder. :1 piston. in this cylinder freely movable for reciprocation, valves in the bottom of said cylinder and a rod associated with said piston and movable axially in said cylinder, said rod being arranged to control said valves.
- Hydraulic accumulator comprising a cylinder, a piston in this cylinder freely movable for reciprocation, valves including a safety device in the bottom of cylinder and means arranged for operation by said piston for controlling said valves.
- Hydraulic accumulator comprising a cylinder, a piston this cylinder freely movable for reciprocation, valv "s e bottom of said cylinder and arranged at an angle to the cylinder axis and means arranged for operation by said piston for controlling said valves.
- Hydraulic accumulator comprising a cylinder, a piston in this cylinder freely movable for rcclproca es in the bottom of said c" wec for operation by said piston said valves, said valves bei o be operated automatically and another manually operable valve in said cyli der bottom.
Landscapes
- 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)
Description
MACK ET AL HYDRAULIC ACCUMULATOR Aug. 26, 1930.
Filed v001;. 24, 1928 2 Sheets-Sheet 1 Zn/en 501's Aug. 26, 1930. MACK ET AL I 1,773,821
umnwmc AGCUMULATOR Filed Oct. 24, 1928 2 Shoots-Sheet 2 Jrwenfar Patented Aug. 26, 1930 UNITED STATES MARTIN MACK AND WI LHELM GRbTZINGER, OF STUT'IGART -CANNSTATT, GERMANY HYDRAULIG'ACCUMULATOR Application filed October 24, 1928, Serial No. 314,824, and in. Germany September 28, 1928.
Our invention relates to hydraulic accumulators, more especially of the kind in which a piston is arranged for free reciprocation within the cylinder of the accumulator, being acted upon on one side by the liquid and on the other side by compressedair so as to separate the liquid and air spaces. In accumulators of this kind the valves'or slides which serve to throw the pressure liquid pump in and out of operation, are controlled by the piston, as it moves in the cylinder.
In accumulators of this kind, in order to save space, it has been suggested to mount the piston for free motion on a rod, which could be reciprocated by the piston only the distance which is required to control the valves. However, in these cases the controlling members still consumed an inadmissible space and were also exposed to mechanical damage.
It is an object of our invention to provide an accumulator of this kind, in which the.
space taken up by the controlling and safety devices is reduced to a minimum, while pipes connecting the accumulator with the valves and the like are dispensed withaltogether, all the controlling parts being protected in such manner as to be safe from injury. Nevertheless the valves may be operated by hand, if desired. I
We obtain this according to the present invention by accommodating the valves and the like inthe wall of the accumulator cylinder and preferably in the bottom thereof, com
munication between the valves and the interior of the cylinder being provided by corresponding conduits.
In the drawings aflixed to this specification and forming part thereof three forms of a hydraulic accumulator embodying our in- 0 vention are illustrated diagrammatically by way of example.
In the drawings, f Figs. 1-3 illustrate the first form, V Fig. 1 being an axial section of the accumu lator as a Whole, while Fig. 2 is an end view and Fig. 3 a development of a circular section parallel to the accumulator axis taken on the line AB in Fig. 2.
Fig.4 is an axial section of the bottom part of the second form, and
Fig. 5 is a similar view of the third form.
Referring first to Figs. 1-3, 1 is the accumulator cylinder, 2 is the compressed air space, 3 is the liquid space and 4- is the piston separating them. 5 is the piston rod and 6 and ,7 are two abutments fixed to the rod and serving, when acted upon by the movable piston 4, to displace the rod 5 in one or the other direction. In this case the rod 5 having a nut 8 mounted at its bottom end will act on the hollow control member 10. 9 is a stuffing box through which the rod 5 extends. On the outer end of the control member'lO is mounted a controlling disc 11 which projects above the pins of the valves, which are disposed in the bottom of the cylinder 1 with their axes in parallelto the cylinder axis.
The manually operated valve 12 serves for throwing the apparatus in and out of operation, respectively. 13 is a valve serving to connect-the liquid space 3 of the cylinder through conduit 14with another conduit 15 leading to the cylinder of a servomotor or to the means for reversing the valve of the pump (not shown) which forces liquid intothe cylinder through pipe 16. V 17 is a valve serving to connect the cylinder of the servomotor with the conduits 18 and 19, the latter serving as an exhaust. 20 is a safety valve which will connect the liquid space of the cylinder with the exhaust, whenever the apparatus should get out of order.
The operation of this device is as follows:
After the pump has forced a predetermined quantity of liquid into the liquid space 3, the piston 4 being displaced by the liquid will meet the abutment 6, thereby carrying along rod,5 and nut 8 andthrough this latter also the hollow control member 10 and disc 11. This disc will first act on the projecting pin of valve '13 and with the aid ofthe servomotor or the pump valve will stop the operation of the pump; If for any unforeseen reason the pump should still continue operating, disc 11 would then act on thepro-jecting pin of valve 20, whereby the accumulator would be opened towards'the exhaust.
1 On the pump having come to a standstill, the pressure liquid in the cylinder will gradually be consumed, the piston being gradually shifted towards the abutment 7 and carrying it along together with rod 5, Whereby nut 8 is moved into contact with the outer end of the control member 10, which is now moved to the left together with disc 11. The valve 13, being released by disc 11 will now be closed under the action of the pressure in the cylinder. In moving to the left, disc 11 will carry along the in of valve 17 by means of an abutment 21 n ounted on the pin, Whereby the liquid press; between the accumulator and the servomotor or the controlling piston is released so that this piston will move backwards under spring action and is enabled to throvv the pump in again.
In the modification illustrated in Fig. 4 the valves 13, 17 and 20 are disposed within the bottom of cylinder 1 in a position at right angles to its axis and are controlled by a control member 22 having cam faces formed thereon which are in contact with the valve pins. These cam faces are formed in such manner that vhenever the piston 4 approaches the right end position, Without, however, having reached it, the pin of valve 13 Will be lifted While valve 17 which controls he exhaust from the pump valve or controlling piston, is closed. \Vhile these valves are being acted upon, the pin of the safety valve 20 is still spaced from its cam on the controlling member so far that it will be lifted only if the other valves have been operated and the piston 4 should still continue on its stroke.
In the modification illustrated in Fig. 5 the valves are controlled by a slide 1O which is operated by the rod 5 as described With reference to Figs. l t, the valves being replaced by a system of conduits controlled by the slide 10 in a manner Well known per se.
\Ve wish it to be understood that We do not desire to be limited to the exact details of construction shown and described for obvious modifications Will occur to a person skilled in the art.
In the claims a'llixed to this specification no selection of any particular modification of the invention is intended to the exclusion of other modifications thereof and the right to ailasequently make claim to any modification not covered by these claims is expressely reserved.
W'e claim .i, Hydraulic accumulator comprising a. cylinder, a piston in this cylinder freely movable for reciprocation. valves in the bottom of said cylr ed means arranged for op eration b said piston. for controlling said valves.
2. Hydraulic accumulator comprising a cylinder. :1 piston. in this cylinder freely movable for reciprocation, valves in the bottom of said cylinder and a rod associated with said piston and movable axially in said cylinder, said rod being arranged to control said valves.
3. Hydraulic accumulator comprising a cylinder, a piston in this cylinder freely movable for reciprocation, valves including a safety device in the bottom of cylinder and means arranged for operation by said piston for controlling said valves.
l. Hydraulic accumulator comprising a cylinder, a piston this cylinder freely movable for reciprocation, valv "s e bottom of said cylinder and arranged at an angle to the cylinder axis and means arranged for operation by said piston for controlling said valves.
5. Hydraulic accumulator comprising a cylinder, a piston in this cylinder freely movable for rcclproca es in the bottom of said c" wec for operation by said piston said valves, said valves bei o be operated automatically and another manually operable valve in said cyli der bottom.
In testimony v ereof \ve affix our signatures.
MAI- TEN MACK. IVILHELM GROTZINGER.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1773821X | 1928-09-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1773821A true US1773821A (en) | 1930-08-26 |
Family
ID=7742680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US314824A Expired - Lifetime US1773821A (en) | 1928-09-28 | 1928-10-24 | Hydraulic accumulator |
Country Status (1)
Country | Link |
---|---|
US (1) | US1773821A (en) |
-
1928
- 1928-10-24 US US314824A patent/US1773821A/en not_active Expired - Lifetime
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1663647A (en) | Energy-storage unit | |
US2407855A (en) | Hydraulic press system | |
US2170890A (en) | Removable accumulator | |
US2410116A (en) | Breech actuating and control system | |
US2302922A (en) | Variable delivery pilot pump control system | |
US3295451A (en) | Hydraulic power converter | |
US1773821A (en) | Hydraulic accumulator | |
US2212998A (en) | Hydraulic door operating device | |
US2926412A (en) | Press | |
US2449482A (en) | Reversible pump controlled hydraulic cylinder system | |
US2555426A (en) | Hydraulically actuated pumping system for wells | |
GB2113773A (en) | Apparatus for providing high pressure fluid | |
US2482792A (en) | Single-line hydraulic system | |
US3014624A (en) | Apparatus for discharging concrete | |
US3225544A (en) | Fail-safe gate-operating apparatus | |
US2790305A (en) | Control valves for hydraulic presses | |
US2419235A (en) | Control system for hydraulic motors | |
US2034157A (en) | Hydraulic press system | |
US3044405A (en) | Fluid pressure generator and accumulator assembly | |
US3120858A (en) | Spool valve assembly | |
US2555115A (en) | Hydraulic decompression circuit with automatic reverse | |
US3353814A (en) | Vehicle suspension systems and pumps for such systems | |
US3586030A (en) | Valve system | |
US2447707A (en) | Control apparatus for a plurality of motors | |
US2740357A (en) | Pump pressure control system |