EP2652764A1 - Storage module for a hydraulic stored-energy spring mechanism - Google Patents
Storage module for a hydraulic stored-energy spring mechanismInfo
- Publication number
- EP2652764A1 EP2652764A1 EP11782386.4A EP11782386A EP2652764A1 EP 2652764 A1 EP2652764 A1 EP 2652764A1 EP 11782386 A EP11782386 A EP 11782386A EP 2652764 A1 EP2652764 A1 EP 2652764A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- piston
- storage
- spring
- module according
- 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.)
- Granted
Links
- 238000003860 storage Methods 0.000 title claims abstract description 53
- 239000012530 fluid Substances 0.000 claims abstract description 27
- 230000009467 reduction Effects 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 abstract description 8
- 230000008859 change Effects 0.000 description 7
- 230000001419 dependent effect Effects 0.000 description 5
- 230000003068 static effect Effects 0.000 description 3
- 230000006399 behavior Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/24—Power arrangements internal to the switch for operating the driving mechanism using pneumatic or hydraulic actuator
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H2009/0083—Details of switching devices, not covered by groups H01H1/00 - H01H7/00 using redundant components, e.g. two pressure tubes for pressure switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H3/3005—Charging means
- H01H3/301—Charging means using a fluid actuator
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/38—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by piston and cylinder
Definitions
- the invention relates to a hydraulic storage module for a hydraulic spring-loaded drive for actuating a high-voltage switch, in particular a high-voltage circuit breaker, with the features specified in claim 1.
- Spring-loaded actuators for actuating high-voltage circuit breakers are known, for example, from DE 3408909 A1.
- the there described as a hydraulic drive spring drive for actuating the electrical high-voltage circuit breaker is housed together with a hydraulic accumulator with mechanical pressure holding device in a common pressure housing, in which the conveying member for the hydraulic fluid, a high-pressure pump, and a control unit are integrated together with the required hydraulic connections.
- the hydraulic accumulator is provided to provide the hydraulic drive of the high voltage circuit breaker without a further supply of external energy pressure energy and to operate the drive as intended even in case of failure or interruption of the power supply.
- EP 0829892 A1 a spring-loaded drive is described in which a storage spring pressurizes a fluid via a pressure body and at least two pressure pistons.
- a drive rod of the Feder arrivedantriebes moves, which is attached to a slidable in a working cylinder drive piston.
- the hydraulic system of the spring-loaded drive is depressurized.
- the memory spring is merely biased in this state and expands axially maximum.
- the storage spring presses the pressure body against a stop on the cylinder housing, whereby the pressure body is clamped between the stop and the storage spring.
- the hydraulic system is under pressure.
- the memory spring is stretched in this state and their axial extent is reduced.
- the storage spring presses the pressure body against the pressure piston, which thereby pressurize the fluid.
- the pressure body is clamped between the pressure piston and the storage spring.
- Circuit-breaker drives which use disc springs in combination with a hydraulic piston as energy storage are also known from DE 3408909 A1.
- the disc springs used for energy storage are compressed by a hydraulic piston and from a force-stroke characteristic of the spring can be a pressure-stroke curve of the piston derived, which is shown in Fig. 1b. Due to the degressive course of the force-stroke characteristic of the plate spring, it follows that the pressure change over a large part of the stroke of the piston is only weakly pronounced.
- these coil springs may have a linear force-stroke characteristic, as shown in Fig. 1c, said characteristic curve can go in the worst case even in a progressive characteristic.
- This characteristic also de can be correspondingly translated into a pressure-stroke curve of the piston and have a strong pressure change over the stroke.
- This behavior proves to be unfavorable for hydraulic drives of high-voltage circuit breakers, due to the strong pressure change over the stroke, and leads to a strong pressure change over the storage stroke of the pressure piston of the energy storage compared to the disc springs occurring in declining-balance curve.
- the object of the invention is to provide a memory module for a hydraulic spring-loaded drive for actuating a high-voltage switch, which is simple in construction and whose dynamic pressure-stroke curve is better adapted to the needs of a high-performance switch drive.
- the memory module according to the invention for a hydraulic spring-loaded drive for actuating a high-voltage switch in particular a high-voltage circuit breaker comprises a spring element acting as energy storage and a fluid for transmitting the energy of the spring element by means of a movable accumulator piston on a piston rod for actuating the high-voltage switch, wherein the accumulator piston in a fluid filled pressure-tight housing protrudes and the housing forms a high pressure storage reservoir for the fluid.
- the storage piston is guided in a first embodiment of the storage module according to the invention in a closure lid. In a second embodiment of the storage module according to the invention, the storage piston is guided in the pressure-tight housing.
- the high-pressure storage reserve is connected via at least one projecting into the high-pressure storage reservoir sub-channel and a high-pressure channel connected thereto with a hydraulic system of the spring accumulator drive.
- the accumulator piston closes a portion of the sub-channel from a certain piston stroke.
- the spring element acting as energy storage is designed as a helical spring which cooperates with a storage cylinder arranged in a pressure housing, preferably designed as a plunger cylinder, in which a storage piston movable by fluid pressure is guided.
- the plunger cylinder is designed as a hollow cylinder, in the opening of the accumulator piston is arranged to be movable.
- the accumulator piston works at the same time as a control slide and closes with its attached to the piston top pressure from a certain piston a fluid-flow area of a high-pressure reservoir of the cylinder housing, wherein the piston stroke results from the fact that the storage module has stored more fluid in the high pressure reserve, as to carry out a CO circuit of the high voltage switch is necessary.
- This throttling leads to a dynamic pressure change during the switching process on the downstream side of the throttle point as a function of the piston stroke.
- the spring element of the storage module is thus tensioned when the pressure piston located on the accumulator piston is acted upon by hydraulic fluid, whereby the accumulator piston moves in the direction of the spring element.
- a piston head is placed on the accumulator piston, the piston head protruding into the high-pressure accumulator reserve located in the pressure-tight housing.
- the accumulator piston or the piston head have openings which form a connection between the high-pressure accumulator reservoir and at least one partial passage through which the fluid can flow.
- the execution of the memory module as a plunger cylinder is achieved that in comparison with existing memory modules for high voltage switch actuators no additional components, such as seals are required on the piston head to realize the memory-stroke-dependent throttling.
- Fig. 1 shows a comparison of so-called force-stroke characteristics of different springs with an idealized force-stroke curve
- Fig. 2 shows an example of the execution of the memory module according to the invention for a hydraulic spring-loaded drive for actuating a
- FIG 3 shows an example of the course of dynamic pressure-stroke characteristics of the memory module according to the invention.
- FIG. 1 in comparison to an idealized force-stroke spring characteristic (Fig. 1a), the force-stroke characteristics of a plate spring (Fig. 1b) and a coil spring (Fig. 1c) shown in a storage module for mechanical energy storage can be used for a hydraulic spring accumulator drive.
- Fig. 2 shows an example of the embodiment of the memory module according to the invention for a hydraulic spring drive for actuating a high-voltage circuit breaker, which is arranged in a container body, not shown.
- the storage module comprises a spring element 51 which acts as an energy store and is designed as a helical spring, which is connected to a storage piston 30, which is arranged axially in a closure lid 20 and can be moved by fluid pressure.
- the pressurized end of the accumulator piston 30 is designed as a cylindrical piston head 31.
- the coil spring 51 is supported at one end on a support element 60 of the container body and at the other end on the protruding from the pressure housing 1 part of the accumulator piston 30 from.
- the piston head 31, which is placed on the accumulator piston 30, has openings or bores 32 which designates the oil volume in the working space 13, also referred to as high-pressure accumulator reserve, of the pressure housing 1 with oil volume on the right-hand side of the piston head 31 shown in FIG connect and form a connection between the high pressure storage reservoir 13 and at least one part of the channel 11, 12 which can be flowed through by the fluid.
- a storage piston 30 is provided without piston head 31, wherein the accumulator piston 30 has openings 32 at its projecting into the high-pressure storage reservoir side, which the connection between the high-pressure reservoir 13 and at least one flow-through part of the channel 11, 12 form.
- the accumulator piston 30 operates as a spool valve and closes with its attached to the piston top pressure body 31 from a certain piston stroke s a portion of the fluid-flow region of a located within the housing 1 high pressure reservoir 13, also referred to as high-pressure volume or working space of the pressure housing.
- These Throttling occurs as soon as the storage module has stored more fluid in the high-pressure storage reservoir 13 than is necessary to carry out a CO circuit of the high-voltage circuit breaker.
- a throttling of the dynamic pressure in the high-pressure passage 10 in dependence on the piston stroke is achieved in an advantageous manner.
- the high-pressure passage 10 is adjoined by a sub-passage designated as the first area 11 and a further sub-passage designated as the second area 12. While the memory module is subjected to low pressure, that is, the amount of energy stored in the memory module is sufficient for a CO circuit, a first region 11 and a second region 12 are flowed through by the fluid. Thus, there is no dynamic pressure reduction in the high pressure passage 10 during a switching operation. If the storage module subjected to high pressure, that is, the stored amount of energy is greater than necessary for a CO circuit, the first region 11 is closed by means of the pressure body 31 and it can only be flowed through the second region 12 with fluid. This results in a dynamic pressure reduction in the high pressure passage 10 during a switching operation.
- the flow through at least one of the sub-channels 11, 12 is adjustable by means of a throttle element.
- the high pressure seal 40 shown in FIG. 2 is provided for fluid sealing of the accumulator piston 30.
- FIG. 3 shows an example of the course of a stroke-pressure curve K1 at a flow rate of 0 and compared the qualitative course of a stroke-pressure curve K2 for the C-circuit and a dynamic stroke-pressure curve K3 for the O.
- the invention aims at adapting a dynamic pressure-stroke characteristic, which is due to hydraulic losses in the storage module.
- the hydraulic losses are dependent on the volume flow of the high pressure fluid in the working space of the pressure housing and are not or only minimally influenced by the pressure within the high pressure storage volume.
- the pressure change over the Speicherhub s of the memory module of the spring drive of the high-voltage switch is advantageously improved and the dynamic pressure-stroke characteristic, which arises due to hydraulic losses in the hydraulic system of the spring drive, depending on the stroke s of the accumulator piston 30th customized.
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Actuator (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010054665A DE102010054665B3 (en) | 2010-12-15 | 2010-12-15 | Storage module for a hydraulic spring-loaded drive |
PCT/EP2011/005644 WO2012079667A1 (en) | 2010-12-15 | 2011-11-10 | Storage module for a hydraulic stored-energy spring mechanism |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2652764A1 true EP2652764A1 (en) | 2013-10-23 |
EP2652764B1 EP2652764B1 (en) | 2014-08-20 |
Family
ID=44970985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11782386.4A Active EP2652764B1 (en) | 2010-12-15 | 2011-11-10 | Storage module for a hydraulic stored-energy spring mechanism |
Country Status (10)
Country | Link |
---|---|
US (1) | US9620302B2 (en) |
EP (1) | EP2652764B1 (en) |
JP (1) | JP5819979B2 (en) |
KR (1) | KR20140009254A (en) |
CN (2) | CN202183327U (en) |
BR (1) | BR112013014985B1 (en) |
DE (1) | DE102010054665B3 (en) |
MX (1) | MX2013006723A (en) |
RU (1) | RU2552849C2 (en) |
WO (1) | WO2012079667A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010054665B3 (en) * | 2010-12-15 | 2012-02-02 | Abb Technology Ag | Storage module for a hydraulic spring-loaded drive |
DE102012007680B4 (en) * | 2012-03-09 | 2021-10-07 | Abb Power Grids Switzerland Ag | Hydromechanical storage module for a spring-loaded actuator of a high-voltage switch |
CN103560038A (en) * | 2013-11-11 | 2014-02-05 | 沈阳工业大学 | Spring energy storage device of hydraulic spring operating mechanism |
DE202016100443U1 (en) | 2015-12-23 | 2016-02-16 | Abb Technology Ag | Storage module for a hydro-mechanical spring-loaded drive |
CN108713103B (en) * | 2016-02-14 | 2021-01-29 | 学校公司冬木学园 | Elastic body tube for fluid pressure type actuator, and actuator |
KR102016494B1 (en) | 2017-10-23 | 2019-09-02 | 삼성전기주식회사 | Coil component |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3175061A (en) * | 1957-09-30 | 1965-03-23 | Chicago Pneumatic Tool Co | Maximum fluid pressure control device |
FR1249874A (en) * | 1959-11-13 | 1961-01-06 | Quick circuit breaker | |
DE3408909A1 (en) * | 1984-03-10 | 1985-09-12 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | HYDRAULIC DRIVE |
JPS61157835A (en) * | 1984-12-28 | 1986-07-17 | Aisin Warner Ltd | Accumulator |
US5624105A (en) * | 1992-10-10 | 1997-04-29 | Hemscheidt Fahrwerktechnik Gmbh & Co. | Hydropneumatic suspension system |
DE4340142C2 (en) * | 1993-11-25 | 1995-11-23 | Abb Patent Gmbh | Hydraulic device for actuating at least one linearly movable component |
JPH1079218A (en) * | 1996-09-04 | 1998-03-24 | Toshiba Corp | Fluid pressure operating device of switch for power |
DE19637051A1 (en) * | 1996-09-12 | 1998-03-19 | Abb Patent Gmbh | Hydraulic drive |
DE19637052A1 (en) * | 1996-09-12 | 1998-03-19 | Abb Patent Gmbh | Hydraulic drive |
DE102007062291A1 (en) * | 2007-10-16 | 2009-04-23 | Abb Technology Ag | Hydraulic spring accumulator drive |
DE102008032143A1 (en) | 2008-07-08 | 2010-01-14 | Abb Technology Ag | Hydraulic spring accumulator drive |
CN201532867U (en) * | 2009-05-27 | 2010-07-21 | 北京华清海沃开关设备有限公司 | Spring hydraulic operation mechanism for high voltage breaker |
US20110073420A1 (en) * | 2009-09-23 | 2011-03-31 | Engineered Products Company | High pressure switch |
DE102010054665B3 (en) * | 2010-12-15 | 2012-02-02 | Abb Technology Ag | Storage module for a hydraulic spring-loaded drive |
-
2010
- 2010-12-15 DE DE102010054665A patent/DE102010054665B3/en not_active Expired - Fee Related
-
2011
- 2011-02-01 CN CN2011200368706U patent/CN202183327U/en not_active Expired - Lifetime
- 2011-11-10 WO PCT/EP2011/005644 patent/WO2012079667A1/en active Application Filing
- 2011-11-10 CN CN201180060377.0A patent/CN103250222B/en active Active
- 2011-11-10 JP JP2013543548A patent/JP5819979B2/en active Active
- 2011-11-10 MX MX2013006723A patent/MX2013006723A/en active IP Right Grant
- 2011-11-10 BR BR112013014985-0A patent/BR112013014985B1/en active IP Right Grant
- 2011-11-10 RU RU2013132547/07A patent/RU2552849C2/en active
- 2011-11-10 EP EP11782386.4A patent/EP2652764B1/en active Active
- 2011-11-10 KR KR1020137015462A patent/KR20140009254A/en not_active Application Discontinuation
-
2013
- 2013-06-14 US US13/918,577 patent/US9620302B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2012079667A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2014508374A (en) | 2014-04-03 |
DE102010054665B3 (en) | 2012-02-02 |
BR112013014985B1 (en) | 2020-10-13 |
WO2012079667A1 (en) | 2012-06-21 |
EP2652764B1 (en) | 2014-08-20 |
JP5819979B2 (en) | 2015-11-24 |
US20130277190A1 (en) | 2013-10-24 |
MX2013006723A (en) | 2013-09-13 |
RU2013132547A (en) | 2015-01-20 |
CN103250222B (en) | 2016-03-30 |
US9620302B2 (en) | 2017-04-11 |
CN202183327U (en) | 2012-04-04 |
CN103250222A (en) | 2013-08-14 |
BR112013014985A2 (en) | 2016-09-13 |
KR20140009254A (en) | 2014-01-22 |
RU2552849C2 (en) | 2015-06-10 |
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