EP0829893B1 - Hydraulischer Antrieb - Google Patents
Hydraulischer Antrieb Download PDFInfo
- Publication number
- EP0829893B1 EP0829893B1 EP97115486A EP97115486A EP0829893B1 EP 0829893 B1 EP0829893 B1 EP 0829893B1 EP 97115486 A EP97115486 A EP 97115486A EP 97115486 A EP97115486 A EP 97115486A EP 0829893 B1 EP0829893 B1 EP 0829893B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- arrangement
- cylinder
- cylinder body
- spring
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
- H01H33/34—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator hydraulic
Definitions
- the invention relates to a hydraulic drive according to the preamble of the claim 1.
- Such a drive has become known from EP 0 158 054 B1.
- This drive has a working piston with a piston rod molded onto it, which with a High-voltage circuit breaker is connected and the on or off.
- the Working piston or the working piston-cylinder arrangement is supplied with pressure fluid, which is provided by a pressure accumulator, which has a pressure piston and a Includes pressure cylinder, both of which concentrically surround the piston rod.
- a pressure accumulator which has a pressure piston and a Includes pressure cylinder, both of which concentrically surround the piston rod.
- the working piston surrounding plate spring arrangement which is approximately in the middle of the working piston-cylinder arrangement on the outside of the cylinder body on the one hand and against on the other hand supports a thrust piece, which is connected to the pressure piston via tie rods connected is.
- the tie rods reach through the cylinder body, creating an overall high effort is also required with regard to sealing.
- the object of the invention is to provide a hydraulic drive of the type mentioned to create, which is simplified compared to the known hydraulic drive.
- the pressure piston is surrounding the working piston-cylinder arrangement Annular piston which slides in an annular space actuated by the spring arrangement, wherein in the annulus section that is opposite to that of the spring assembly Side of the ring piston, the pressure fluid is present.
- Switch-side end here means the end from which the protrudes the switch or possibly another device actuating piston rod. This arrangement results in a very space-saving design.
- annular space is provided, the inside through the outer surface of the cylinder body and outside through the inner surface of a Outer cylinder formed and open to the spring arrangement and close to the switch End of the cylinder body closed by a radially inwardly projecting bottom is.
- This floor lies sealed against the outer surface of the cylinder body on or includes this.
- the fixed end of the spring arrangement is fixed at the switch end of the cylinder body; between the other, freely movable end of the spring arrangement and the pressure piston-cylinder arrangement a pressure piece is provided, which on the outer surface of the cylinder body sealed slides and the spring force of the spring assembly on the pressure piston transmits.
- the relaxation movement of the spring arrangement is in the direction of the high-voltage switch directed.
- FIG. 1 shows an arrangement of the hydraulic drive in two variants, one variant with a stronger energy store to the left of the center line and the one with a smaller energy store or weaker energy store to the right of the center line.
- the hydraulic drive 10 has a cylinder body 11 which has a working cylinder space Contains 12 in which a working piston 13 slides. On the working piston 13 is on formed in the upper side of the drawing a piston rod 14 which with a High-voltage switch 15 works together. High voltage also includes this the voltage range referred to as the medium voltage range is greater than 1 kV.
- the cylinder body 11 is cylindrical and surrounded by a spring arrangement 16 or 17; the spring assembly 16, which consists of more disc springs than that Spring arrangement 17 is designed for a higher pressure level or for other switching sequences.
- a groove 18 is made, in that in the version to the left of the center line is a split, L-shaped in cross section Power transmission body 19 with a flange edge projecting radially inwards 20 is inserted; the force transmission body 19 is surrounded by a holding pot 21, this holding pot 21 has an inner flange edge 22 which projects radially inwards and partially overlaps the power transmission body 19, and an outer flange edge 23 has at its switch-side end, against which one end the plate spring assembly 16 creates. This is the fixed end of the plate spring assembly.
- the only difference between the holding pot 21 and the holding pot 25 is that that the axial extent of the holding pot 21 is significantly larger than that of the holding pot 25th
- annular cover 34 which by means of screw connections 35 on the switch-side end face of the cylinder body 11 is attached, serves as a connecting element for channels or bores running inside the cylinder body 11 (without reference numerals) via which low pressure fluid into a low pressure fluid plenum is promoted.
- annular pressure piston 36 Is located between the pressure piece 27 and the bottom 32 within the annular space 31 there is an annular pressure piston 36, the mode of operation of which is described in more detail below is explained.
- a sealing bush 37 is inserted, which is penetrated by the piston rod 14 and which is held on the cylinder body 11 by means of an end cover 38.
- the Piston rod 14 also passes through end cover 38.
- axial extending bores 39 and radially extending bores 40 are provided with each other or with the connections 41 with a changeover valve, not shown, by means of radially extending bores 42 with the working cylinder 12 and by means of others radial bores 43 with a designated as a low pressure and pump unit Device 44 communicate.
- the low pressure room mentioned above is part of the Low pressure and pump unit.
- the special mode of operation of the device 44 and the connection of the individual Holes 39 to 43 are not particularly important for the invention; about these
- the pressure fluid is supplied to the working piston 13 or the working piston 13 in a suitable form, see for example EP 0 158 054 B1.
- the pump is turned towards the switch using the low-pressure pumping device Area of the annular space 31, controlled by the changeover valve, with Filled pressure fluid, so that the annular piston 36 in the direction of arrow P from the outer cylinder 29 is driven out, compressing the spring arrangement 16 or 17 and thus energy in the spring arrangement 16 or 17 serving as an energy store saves.
- the spring arrangement 16 or 17 would essentially on block compressed and the annular piston 36 would be pressed out of its annular space 31, seals 45 present in the annular space from the switch-side end of the Ring piston 36 must not be overrun. At least they have to be on the outside Seals 46 located in the area of the annular piston 36 near the switch remain inside the outer cylinder 29.
- the transition between the working piston 13 and the piston rod 14 has one Area 47 with larger diameter; this area 47 is a damping device 48 assigned; if the area 47 in the damping ring when switching on 48 arrives, the switch-on movement is damped.
- a pin-like extension 49 is provided, which at Switch-off process retracts into a damping ring 50 and thereby the end of the Brakes off movement.
- the particular advantage of the configuration according to the invention is that the referred to as the pressure chamber switch-side section of the annular space in the immediate Proximity to the pump low pressure tank device and thus to the working piston or the working piston-cylinder arrangement, so that the flow resistance, which has to be overcome when switching on and off is considerably reduced.
- the invention is based on a hydraulic drive for a high-voltage circuit breaker described.
- a high-voltage circuit breaker to drive any other device, in which tasks similar to those of a high-voltage circuit breaker are solved have to.
Landscapes
- Actuator (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Es zeigt die einzige Fig. eine Anordnung des hydraulischen Antriebes in zwei Varianten, wobei die eine Variante mit einem stärkeren Energiespeicher links der Mittellinie und die mit einem kleineren Energiespeicher oder schwächeren Energiespeicher rechts der Mittellinie gezeichnet ist.
Claims (7)
- Hydraulischer Antrieb mit einer Arbeitskolben-Zylinderanordnung, von der der Arbeitskolben (13) über eine Kolbenstange (14) eine Betätigungseinrichtung, vorzugsweise einen Hochspannungsleistungsschalter, antreibt, mit einer Druckkolben-Zylinderanordnung (29, 36), mit der zur Ansteuerung der Arbeitskolben-Zylinderanordnung (13, 11, 12) Druckfluid bereitgestellt wird, und mit einer Federspeicheranordnung (16, 17), deren Speicherenergie an die Druckkolben-Zylinderanordnung (29, 36) übertragen wird, wobei die Federanordnung konzentrisch die Arbeitskolben-Zylinderanordnung (13, 12, 11) umgibt, dadurch gekennzeichnet, daß der Druckkolben (36) ein den Zylinderkörper (11) der Arbeitskolben-Zylinderanordnung umgebender Ringkolben ist, der in einem Ringraum (31) von der Federanordnung (16, 17) betätigt wird, wobei in dem Ringraumabschnitt, der sich auf der der Federanordnung (16, 17) entgegengesetzten Seite des Ringkolbens (36) befindet, das Druckfluid ansteht.
- Hydraulischer Antrieb nach Anspruch 1, dadurch gekennzeichnet, daß die Druckkolben-Zylinderanordnung (36, 29) sich zwischen der Federanordnung (16, 17) und dem betätigungseinrichtungsseitigen, vorzugsweise schalterseitigen Ende des Zylinderkörpers (11) befindet.
- Hydraulischer Antrieb nach Anspruch 2, dadurch gekennzeichnet, daß der Ringraum (31) der Druckkolben-Zylinderanordnung (36, 29) innen durch die Außenfläche des Zylinderkörpers (11) und außen durch die Innenfläche eines Außenzylinders (29) gebildet und zur Federanordnung hin offen und zum betätigungseinrichtungsseitigen, vorzugsweise schalternahen Ende des Zylinderkörpers (11) durch einen radial nach innen vorspringenden Boden (32) geschlossen ist, der sich abgedichtet gegen die Außenfläche des Zylinderkörpers (11) anlegt bzw. diesen umfaßt.
- Hydraulischer Antrieb nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß das ortsfeste Ende der Federanordnung (16, 17) am betätigungseinrichtungsabseitigen, vorzugsweise schalterabseitigen Ende des Zylinderkörpers (12) fixiert ist und daß zwischen dem anderen, frei beweglichen Ende der Federanordnung (16, 17) und der Druckkolben-Zylinderanordnung (36, 29) ein Druckstück (27) vorgesehen ist, welches auf der Außenfläche des Zylinderkörpers (11) abgedichtet gleitet und die Federkraft der Federanordnung (16, 17) auf den Druckkolben (36) überträgt.
- Hydraulischer Antrieb nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Entspannungsbewegung der Federanordnung (16, 17) in Richtung zur Betätigungseinrichtung, vorzugsweise zum Hochspannungsschalter (15), gerichtet ist.
- Hydraulischer Antrieb nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß eine Pump-Niederdrucktrankvorrichtung (44) radial auf einer Seite des Zylinderkörpers (11) im Bereich des Druckkolbens (36) und auf der distal entgegengesetzten Seite ein Umschaltventil vorgesehen ist.
- Hydraulischer Antrieb nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß der Zylinderkörper ein Tiefzieh- oder Schmiedematerial ist, in den der Arbeitszylinder (12) sowie die Bohrungen (39) bis 43) für die Druckfluidleitungen durch mechanische Bearbeitung (Bohren) eingebracht sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19637051 | 1996-09-12 | ||
DE19637051A DE19637051A1 (de) | 1996-09-12 | 1996-09-12 | Hydraulischer Antrieb |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0829893A1 EP0829893A1 (de) | 1998-03-18 |
EP0829893B1 true EP0829893B1 (de) | 1999-03-03 |
Family
ID=7805353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97115486A Expired - Lifetime EP0829893B1 (de) | 1996-09-12 | 1997-09-08 | Hydraulischer Antrieb |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0829893B1 (de) |
JP (1) | JPH10184611A (de) |
KR (1) | KR100479652B1 (de) |
DE (2) | DE19637051A1 (de) |
TW (1) | TW355806B (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19900772A1 (de) * | 1999-01-12 | 2000-07-13 | Abb Patent Gmbh | Antriebskolbenanordnung eines hydraulischen Antriebs für eine Betätigungseinrichtung, insbesondere ein Schaltgerät |
DE19900771B4 (de) * | 1999-01-12 | 2007-06-06 | Abb Patent Gmbh | Umschaltventil eines hydraulischen Antriebes für eine Betätigungseinrichtung, insbesondere ein Schaltgerät |
DE19900778A1 (de) * | 1999-01-12 | 2000-07-13 | Abb Patent Gmbh | Hydraulischer Antrieb für eine Betätigungseinrichtung, insbesondere ein Schaltgerät |
CN100437869C (zh) * | 2006-05-25 | 2008-11-26 | 沈阳东华工大高压电器设备有限公司 | 用于高压断路器的弹簧液压操动机构 |
DE102007062291A1 (de) * | 2007-10-16 | 2009-04-23 | Abb Technology Ag | Hydraulischer Federspeicherantrieb |
DE102008032143A1 (de) * | 2008-07-08 | 2010-01-14 | Abb Technology Ag | Hydraulischer Federspeicherantrieb |
DE102008050674A1 (de) * | 2008-10-07 | 2010-04-08 | Abb Technology Ag | Hydromechanischer Federspeicherantrieb |
DE102009015881A1 (de) * | 2009-04-01 | 2010-10-07 | Abb Technology Ag | Hydromechanischer Antrieb für elektrische Leitungsschalter |
DE102010054665B3 (de) | 2010-12-15 | 2012-02-02 | Abb Technology Ag | Speichermodul für einen hydraulischen Federspeicherantrieb |
DE102011103007A1 (de) * | 2011-05-24 | 2012-11-29 | Abb Technology Ag | Antriebsvorrichtung für einen elektrischen Hochspannungsleistungsschalter |
CN102592877B (zh) * | 2012-02-22 | 2014-06-18 | 王颖 | 一种集成有控制阀的工作缸和大功率液压弹簧操动机构 |
DE202013006585U1 (de) * | 2013-07-22 | 2014-10-23 | Liebherr-Aerospace Lindenberg Gmbh | Stellzylinder für einen Stellantrieb |
CN103617920B (zh) * | 2013-10-31 | 2016-03-09 | 国家电网公司 | 阀厅接地开关 |
CN104295554B (zh) * | 2014-02-24 | 2017-04-05 | 国家电网公司 | 开关机构、液压操动机构及其工作缸 |
CN104167324B (zh) * | 2014-07-31 | 2016-06-22 | 国家电网公司 | 一种防断路器绝缘拉杆拉脱的导向装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5631509A (en) * | 1979-08-24 | 1981-03-30 | Masuo Shiaku | Lock device for telescopic cylinder |
DE3408909A1 (de) * | 1984-03-10 | 1985-09-12 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | Hydraulischer antrieb |
DE3611501A1 (de) * | 1986-04-05 | 1987-10-08 | Bbc Brown Boveri & Cie | Antrieb zur erzeugung einer linearen bewegung fuer einen verbraucher |
DE4011445A1 (de) * | 1990-04-09 | 1991-10-10 | Abb Patent Gmbh | Hydraulischer antrieb |
DE19637052A1 (de) * | 1996-09-12 | 1998-03-19 | Abb Patent Gmbh | Hydraulischer Antrieb |
-
1996
- 1996-09-12 DE DE19637051A patent/DE19637051A1/de not_active Withdrawn
-
1997
- 1997-07-30 TW TW086110844A patent/TW355806B/zh active
- 1997-08-26 KR KR1019970040880A patent/KR100479652B1/ko not_active IP Right Cessation
- 1997-09-08 EP EP97115486A patent/EP0829893B1/de not_active Expired - Lifetime
- 1997-09-08 DE DE59700100T patent/DE59700100D1/de not_active Expired - Fee Related
- 1997-09-11 JP JP9247163A patent/JPH10184611A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
TW355806B (en) | 1999-04-11 |
DE19637051A1 (de) | 1998-03-19 |
DE59700100D1 (de) | 1999-04-08 |
KR100479652B1 (ko) | 2005-07-07 |
EP0829893A1 (de) | 1998-03-18 |
JPH10184611A (ja) | 1998-07-14 |
KR19980024181A (ko) | 1998-07-06 |
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