EP0109417B1 - Convertisseur de pression hydropneumatique - Google Patents
Convertisseur de pression hydropneumatique Download PDFInfo
- Publication number
- EP0109417B1 EP0109417B1 EP19830901610 EP83901610A EP0109417B1 EP 0109417 B1 EP0109417 B1 EP 0109417B1 EP 19830901610 EP19830901610 EP 19830901610 EP 83901610 A EP83901610 A EP 83901610A EP 0109417 B1 EP0109417 B1 EP 0109417B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- housing
- hydraulic cylinder
- front plate
- hydraulic
- 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
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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
- F15B11/072—Combined pneumatic-hydraulic systems
-
- 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
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
- F15B2211/216—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being pneumatic-to-hydraulic converters
Definitions
- the invention relates to a pneumo-hydraulic pressure transducer with a pneumatic primary side and a hydroutomatic secondary side.
- a device consisting of a pneumatic working cylinder and a hydraulic working cylinder is generally used, in which the piston of the pneumatic working cylinder forming the primary side is rigidly connected to the piston of the hydraulic working cylinder forming the secondary side.
- the pressure is converted in relation to the cylinder diameter.
- there is a disadvantage in that it is caused by the cylinders arranged axially one behind the other. Space requirement is too large.
- the economy of the device is also impaired by the fact that two working cylinders are required, a sophisticated seal between the two cylinders and the pistons being ensured.
- the large space requirement and the high cost of the known device limit its applicability in numerous cases.
- Pneumo-hydraulic pressure transducers with the features from the introductory part of claim 1 are already known (FR-A-24 53 299; GB-A-1 376 417).
- the primary side By designing the primary side as an immersion cylinder in the form of a rolling membrane with a cup-shaped membrane plate attached to it, the sealing problem between a cylinder and a piston is eliminated for the primary side.
- a rolling diaphragm With a rolling diaphragm, however, the size of the pneumatic pressure is limited.
- these known constructions in which the housing of the primary side and the secondary side of the pressure transducer are also arranged axially one behind the other, still have a relatively large overall length.
- the object of the invention is to create a pneumo-hydraulic pressure transducer which, with a simple construction, requires little space.
- a pneumo-hydraulic pressure transducer with the features according to the preamble of claim 1 in that the hose membrane is designed as a bellows, by which the cylindrical recess of its end plate is surrounded, and in that the cylinder housing of the hydraulic cylinder within the housing the primary side is arranged such that in the axially extended position of the bellows (3) the cylinder housing of the hydraulic cylinder (4) is located within the recess of the end plate.
- the pressure transducer according to the invention is extremely space-saving because the primary side and the secondary side are arranged one inside the other such that the displacement of the hydraulic cylinder is arranged within the displacement of the end plate of the bellows.
- the spring from which the end plate of the bellows is returned to its initial position, preferably surrounds the cylinder housing of the hydraulic cylinder and the spring is also supported on the end plate of the bellows in the recess.
- the pressure transducer according to the invention is extremely simple and is constructed from relatively inexpensive structural components.
- the pneumo-hydraulic pressure converter is arranged in the housing 11.
- the primary side is formed by a bellows 3, the end face of which is closed by an end plate 2, in which a cylindrical recess is formed.
- the interior 1 of the bellows 3 can be connected to a pneumatic pressure source via a connector 13 formed on the housing 11.
- the secondary side of the pneumo-hydraulic pressure transducer is formed by a hydraulic cylinder 4, which is arranged so that it lies in the axially extended position of the bellows 3 within the same or within the recess of the end plate 2.
- the piston 5 of the hydraulic cylinder 4 is attached to the bottom of the recess on the end plate 2 of the bellows 3.
- the hydraulic cylinder 4 itself has an inflow space 7 connected to an inflow rescue 6 and a displacement space 8.
- the displacement chamber 8 is connected to a drain line 14.
- a partition 9 is provided between the inflow space 7 and the displacement space 8, in which a seal 10 is arranged. The seal cooperates with the piston 5 so that the inflow space 7 and the displacement space 8 are separated from each other.
- the hydraulic cylinder is also provided with a seal 15 above the inflow space 7.
- a compression spring 12 holds the bellows 3 in its basic position.
- the pressure transducer according to the invention can be used as a working device; In this case, so-called suction pressure valves or check valves must be inserted into the inflow line 6 or inserted into the outflow line. If the pressure transducer is used as a pump, it is expedient to operate a plurality of pressure transducers in parallel but out of phase in order to reduce the flow pulsation or to achieve a uniform flow.
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)
- Actuator (AREA)
Abstract
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83901610T ATE23913T1 (de) | 1982-05-24 | 1983-05-24 | Pneumohydraulischer druckwandler. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU165282A HU188794B (en) | 1982-05-24 | 1982-05-24 | Pneumohydraulic pressure converter |
HU165282 | 1982-05-24 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0109417A1 EP0109417A1 (fr) | 1984-05-30 |
EP0109417A4 EP0109417A4 (fr) | 1984-08-10 |
EP0109417B1 true EP0109417B1 (fr) | 1986-11-26 |
Family
ID=10955521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19830901610 Expired EP0109417B1 (fr) | 1982-05-24 | 1983-05-24 | Convertisseur de pression hydropneumatique |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0109417B1 (fr) |
JP (1) | JPS59501019A (fr) |
DE (1) | DE3367964D1 (fr) |
HU (1) | HU188794B (fr) |
WO (1) | WO1983004288A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4445011A1 (de) * | 1994-12-16 | 1996-06-20 | Tox Pressotechnik Gmbh | Hydraulischer Druckübersetzer |
DE19538861A1 (de) * | 1995-10-19 | 1997-04-24 | Bayerische Motoren Werke Ag | Vorrichtung zur Kraftverstärkung |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US465145A (en) * | 1891-12-15 | Leather-splitting machine | ||
FR1202448A (fr) * | 1958-07-17 | 1960-01-11 | Renault | Perfectionnements aux surpresseurs |
US3200717A (en) * | 1963-04-11 | 1965-08-17 | Einsiedler Charles Stephen | Hydraulic pressure volume transformer |
GB1163887A (en) * | 1967-04-07 | 1969-09-10 | Spencer Franklin Ltd | Improvements in or relating to Pressure Intensifying Devices |
FR2077960A1 (fr) * | 1970-02-27 | 1971-11-05 | Courbet Gerard | |
US3776267A (en) * | 1972-09-07 | 1973-12-04 | Borg Warner | Pressure transfer unit with bellows |
GB1376417A (en) * | 1973-04-06 | 1974-12-04 | Bendix Corp | Hydro-pneumatic brake control system |
SU516842A1 (ru) * | 1974-08-01 | 1976-06-05 | Центральное проектно-конструкторское бюро Министерства речного флота РСФСР | Гидравлический мультипликатор перемещени |
FR2453299A1 (fr) * | 1979-04-03 | 1980-10-31 | Wabco Fahrzeugbremsen Gmbh | Groupe multiplicateur de pression |
-
1982
- 1982-05-24 HU HU165282A patent/HU188794B/hu not_active IP Right Cessation
-
1983
- 1983-05-24 EP EP19830901610 patent/EP0109417B1/fr not_active Expired
- 1983-05-24 WO PCT/HU1983/000027 patent/WO1983004288A1/fr active IP Right Grant
- 1983-05-24 JP JP50170183A patent/JPS59501019A/ja active Pending
- 1983-05-24 DE DE8383901610T patent/DE3367964D1/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0109417A4 (fr) | 1984-08-10 |
JPS59501019A (ja) | 1984-06-07 |
HU188794B (en) | 1986-05-28 |
EP0109417A1 (fr) | 1984-05-30 |
DE3367964D1 (en) | 1987-01-15 |
WO1983004288A1 (fr) | 1983-12-08 |
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