DE1475818B1 - Hydro-pneumatic pressure accumulator - Google Patents
Hydro-pneumatic pressure accumulatorInfo
- Publication number
- DE1475818B1 DE1475818B1 DE19651475818 DE1475818A DE1475818B1 DE 1475818 B1 DE1475818 B1 DE 1475818B1 DE 19651475818 DE19651475818 DE 19651475818 DE 1475818 A DE1475818 A DE 1475818A DE 1475818 B1 DE1475818 B1 DE 1475818B1
- Authority
- DE
- Germany
- Prior art keywords
- piston
- cylinder
- pump
- hydraulic fluid
- contacts
- 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.)
- Withdrawn
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
- 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
- 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
- F15B2201/415—Gas ports
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)
Description
Die Erfindung bezieht sich auf einen hydropneumatischen Druckspeicher mit Trennung der Hydraulikflüssigkeit vom pneumatischen Kissen durch einen in einem Zylinder gleitenden Kolben.The invention relates to a hydropneumatic pressure accumulator with separation of the Hydraulic fluid from the pneumatic cushion through a piston sliding in a cylinder.
Die Trennung des Gaskissens von der Flüssigkeit soll bekanntlich Absorption von Gas durch die Flüssigkeit verhindern, da solch absorbiertes Gas bei der Entspannung im Stellmotor frei werden und die Proportionalität der Stellmotorbewegungen verfälschen, also die hydraulische Steuerungseinrichtung stören würde.The separation of the gas cushion from the liquid is known to be intended to absorb gas by the liquid prevent, since such absorbed gas is released during the expansion in the servomotor and the proportionality falsify the servomotor movements, i.e. disrupt the hydraulic control device would.
Bei den bekannten Speichern der eingangs genannten Art (bekannt z.B. aus USA.-Patentschrift 3 004 561) ist das Hubvolumen des Trennkolbens gleich dem Volumen der zu speichernden Hydraulikflüssigkeit, d. h., der Zylinder ist so groß, daß er die gesamte zu speichernde Flüssigkeitsmenge aufnehmen kann.In the case of the known memories of the type mentioned at the beginning (known e.g. from the USA patent specification 3 004 561) the stroke volume of the separating piston is equal to the volume of the hydraulic fluid to be stored, d. That is, the cylinder is so large that it can accommodate the entire amount of liquid to be stored can.
Wenn die für einen Steuervorgang benötigte, also im Speicher zu speichernde Flüssigkeitsmenge sehr groß ist, wie z. B. bei den Schnellschlußeinrichtungen sehr großer Wasserturbinen, dann würden der Trennkolben und sein Zylinder sehr groß sein müssen und daher sehr teuer werden. Dies soll durch die Erfindung vermieden werden.If the amount of liquid required for a control process, i.e. to be stored in the memory, is very high is large, such as B. in the quick-closing devices of very large water turbines, then the separating piston would and its cylinder must be very large and therefore very expensive. This is intended by the invention be avoided.
Der Grundgedanke der Erfindung ist, den Trennkolben und seinen Zylinder nicht für die gesamte zu einem Schnellschluß-Steuervorgang nötige und daher zu speichernde, aber bei der Seltenheit von Schnellschlüssen nur selten benötigte Druckflüssigkeitsmenge zu bemessen, sondern nur für die relativ kleine Menge, welche bei den ständig vorkommenden Steuervorgängen, z. B. bei Drehzahlregelungs-Steuervorgängen, benötigt wird.The basic idea of the invention is, the separating piston and its cylinder not for the whole necessary for a quick closing control process and therefore to be saved, but with the rarity of To measure the amount of hydraulic fluid that is seldom required for quick-action locks, only for the relative small amount, which in the constantly occurring control processes, z. B. in speed regulation control processes, is needed.
Die Erfindung besteht darin, daß das Hubvolumen des Kolbens nur gleich der relativ kleinen, häufig benötigten, aber nicht gleich der größeren, nur selten benötigten Druckflüssigkeitsmenge bemessen und der Zylinder senkrecht angeordnet und an seinem flüssigkeitsseitigen unteren Ende mit einem den Abwärtshub des Kolbens begrenzenden Anschlag und nahe seinem unteren Ende mit einer Öffnung im Zylindermantel versehen ist, die vom Kolben in seiner untersten Stellung freigegeben wird und dann dem Druckgas den Durchtritt zur Druckflüssigkeit freigibt.The invention consists in the fact that the stroke volume of the piston is only equal to the relatively small, often required, but not equal to the larger, rarely required amount of hydraulic fluid and the Cylinder arranged vertically and at its lower end on the liquid side with a downward stroke the piston limiting stop and near its lower end with an opening in the cylinder jacket is provided, which is released by the piston in its lowest position and then the compressed gas releases the passage to the hydraulic fluid.
Ein Ausführungsbeispiel ist in der Zeichnung, teilweise im Schnitt, dargestellt. Darin bedeutet 1 den das Druckgas enthaltenden sogenannten Windkessel,An exemplary embodiment is shown in the drawing, partially in section. 1 means den the so-called air chamber containing the compressed gas,
2 den Zylinder, in welchem der Trennkolben gleitet,2 the cylinder in which the separating piston slides,
3 die den Windkessel mit dem Zylinder verbindende Leitung, 4 den die gesamte Druckflüssigkeit enthaltenden Speicher und 5 das untere Ende des Zylinders, dessen Stirnwand den den Abwärtshub des Kolbens begrenzenden Anschlag bildet. Es bezeichnet ferner 6 den Trennkolben, 7 dessen Dichtungsringe, 8 die Öffnung im Mantel des Zylinders, durch die bei tiefster Kolbenstellung Druckgas in den Wasserspeicher eintreten kann, und 9 die die Druckflüssigkeit zum und vom Druckflüssigkeitsspeicher hin- bzw. abführende Leitung. Bei 10 ist das Steuerorgan gezeichnet, das der Druckflüssigkeit den Abfluß zur Steuereinrichtung öffnet. 11,12 und 13 sind die die Flüssigkeit in den Speicher einspeisende Pumpe bzw. deren Druckstutzen bzw. deren Pumpventil (Rückschlagventil). Der elektrische Strom für den Antrieb der Pumpe wird vom Kolben mittels zweier ortsfester Kontakte 14/15 und zweier mit dem Kolben beweglicher Kontakte 16-17 aus- und eingeschaltet; der Kolben pendelt also zwischen diesen beiden Schaltstellungen auf und nieder.3 the line connecting the air chamber to the cylinder, 4 the reservoir containing all of the pressure fluid, and 5 the lower end of the cylinder, the end wall of which forms the stop that limits the downward stroke of the piston. It also denotes 6 the separating piston, 7 its sealing rings, 8 the opening in the jacket of the cylinder through which compressed gas can enter the water reservoir when the piston is in its lowest position, and 9 the line carrying the hydraulic fluid to and from the hydraulic fluid reservoir. At 10, the control member is drawn, which opens the drain to the control device of the hydraulic fluid. 11, 12 and 13 are the pump that feeds the liquid into the reservoir or its pressure port or its pump valve (non-return valve). The electric current for driving the pump is switched on and off by the piston by means of two stationary contacts 14/15 and two contacts 16-17 movable with the piston; the piston thus oscillates up and down between these two switching positions.
Das Druckgas kommt also mit der Druckflüssigkeit nur dann in Berührung, wenn — z. B. bei Schnellschluß der Turbine — das Steuerorgan 10 weit geöffnet und der Flüssigkeitsstand im Zylinder und mit ihm der Kolben so weit gesunken ist, daß der Kolben die Zylinderöffnung 8 freigegeben hat.The compressed gas only comes into contact with the hydraulic fluid when - z. B. in the event of a trip the turbine - the control member 10 wide open and the liquid level in the cylinder and with the piston has sunk so far that the piston has released the cylinder opening 8.
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR967939A FR1397434A (en) | 1964-03-19 | 1964-03-19 | High pressure gas accumulator transmitting pressure through a liquid |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1475818B1 true DE1475818B1 (en) | 1969-12-18 |
Family
ID=8825877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19651475818 Withdrawn DE1475818B1 (en) | 1964-03-19 | 1965-03-16 | Hydro-pneumatic pressure accumulator |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE1475818B1 (en) |
ES (1) | ES310729A1 (en) |
FR (1) | FR1397434A (en) |
GB (1) | GB1025818A (en) |
SE (1) | SE300558B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113483143A (en) * | 2021-09-08 | 2021-10-08 | 成都迈可森流体控制设备有限公司 | Quick and accurate response split-range actuator |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB639701A (en) * | 1948-03-13 | 1950-07-05 | Mactaggart Scott & Company Ltd | Improvements in hydraulic accumulators |
US3004561A (en) * | 1957-08-30 | 1961-10-17 | Kelsey Hayes Co | Double-walled accumulator with time delay orifice |
-
1964
- 1964-03-19 FR FR967939A patent/FR1397434A/en not_active Expired
-
1965
- 1965-03-01 GB GB8697/65A patent/GB1025818A/en not_active Expired
- 1965-03-16 DE DE19651475818 patent/DE1475818B1/en not_active Withdrawn
- 1965-03-18 SE SE3531/65A patent/SE300558B/xx unknown
- 1965-03-18 ES ES0310729A patent/ES310729A1/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB639701A (en) * | 1948-03-13 | 1950-07-05 | Mactaggart Scott & Company Ltd | Improvements in hydraulic accumulators |
US3004561A (en) * | 1957-08-30 | 1961-10-17 | Kelsey Hayes Co | Double-walled accumulator with time delay orifice |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113483143A (en) * | 2021-09-08 | 2021-10-08 | 成都迈可森流体控制设备有限公司 | Quick and accurate response split-range actuator |
Also Published As
Publication number | Publication date |
---|---|
ES310729A1 (en) | 1965-12-01 |
FR1397434A (en) | 1965-04-30 |
GB1025818A (en) | 1966-04-14 |
SE300558B (en) | 1968-04-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
E77 | Valid patent as to the heymanns-index 1977 | ||
EHJ | Ceased/non-payment of the annual fee |