EP3394453A1 - Speichermodul für einen hydromechanischen federspeicherantrieb - Google Patents
Speichermodul für einen hydromechanischen federspeicherantriebInfo
- Publication number
- EP3394453A1 EP3394453A1 EP16806147.1A EP16806147A EP3394453A1 EP 3394453 A1 EP3394453 A1 EP 3394453A1 EP 16806147 A EP16806147 A EP 16806147A EP 3394453 A1 EP3394453 A1 EP 3394453A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- storage
- head
- piston
- storage module
- 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
- 239000012530 fluid Substances 0.000 claims abstract description 14
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
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
- F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
- F15B7/06—Details
- F15B7/08—Input units; Master units
-
- 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
- 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
- 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
- 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
- H01H33/40—Power arrangements internal to the switch for operating the driving mechanism using spring motor
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- 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
- F15B2201/21—Accumulator cushioning means using springs
-
- 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
-
- 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
- F15B2201/413—Liquid ports having multiple liquid ports
Definitions
- the invention relates to a hydraulic storage module for a hydromechanical spring storage drive, wherein the spring storage drive is provided for actuating a high or medium voltage circuit breaker.
- High voltage is understood to mean the voltage range above 50 kV, while the mean voltage is considered to be the range between 1 and 50 kV.
- a hydromechanical spring-loaded drive for actuating a high-voltage circuit breaker is known, for example, from EP 0829892 B1.
- the drive described therein includes a central piston-cylinder arrangement, by means of which the high-voltage circuit breaker is actuated.
- the central piston-cylinder assembly is surrounded by a plate spring package which is clamped between an axially movable cylinder to the pressure ring and a fixed support ring.
- the pressure ring is moved in the direction of the support ring by means of three hydraulic accumulator modules distributed around the central cylinder in the circumferential direction and arranged above the pressure ring.
- the memory modules each contain a storage piston moved in a pressure cylinder and are filled with a fluid under high pressure.
- the spring force of the plate spring assembly supports this process by the spring assembly acts on the pressure ring, so that the storage piston are moved into the memory modules.
- the high-pressure fluid in the storage modules is conveyed in the direction of the central piston, where it amplifies the movement of the piston away from the circuit breaker.
- a storage module for a hydromechanical spring storage drive wherein the spring drive operates on the same basic principle again that described in EP0829892 B1.
- the storage module again contains a storage piston and a pressure cylinder, wherein the present in the printing cylinder, high-pressure fluid introduced via in the storage piston head holes and two in the cylinder wall the memory module arranged sub-channels can be conveyed in a high-pressure channel.
- the two sub-channels are connected parallel to each other to the high-pressure channel. They are also referred to as high pressure connections.
- the high-pressure channel is in turn connected to the hydraulic system of the central piston-cylinder arrangement of the spring accumulator drive.
- the accumulator piston and subchannels of the memory module are arranged relative to one another in such a way that the accumulator piston closes a first of the two subchannels from a predetermined stroke.
- a stroke-dependent throttling is achieved in DE 10 2010 054 665 B3, ie from the predetermined stroke, the fluid passes through only one instead of both sub-channels from the memory module in the hydraulic system of the central piston-cylinder assembly.
- the object of the invention is to provide a memory module for a hydromechanical spring drive for actuating a high or medium voltage circuit breaker in which the described wear problem is resolved.
- the storage piston head When closing the first part of the channel, so one of the two high-pressure ports, the storage piston head behaves to the cylinder wall as a slide valve and is therefore subject to similar effects.
- the following effect has adverse effects:
- a deviation of the pressure cylinder or the accumulator piston of the ideal geometric shape eg due to asymmetrical flow and / or manufacturing tolerances, unbalanced pressure fields arise in the sealing gaps between the accumulator piston head and cylinder wall. Due to these pressure fields, the accumulator piston head can be pressed out of the central position, which leads to uneven wear on the accumulator piston head, and in particular on an existing guide band of the accumulator piston head.
- the accumulator piston head is in the course of the operating time ever closer or obliquely to the high pressure connections and thus changes the hydraulic flow losses during the switching operations of the spring accumulator drive. Accordingly, on the one hand there is the danger that the wear residues of the accumulator piston head or the guide belt become abrasive particles, which can lead to further signs of wear on other components of the memory module and the rest of the drive, which can ultimately result in leaks. On the other hand, it was recognized that the variable due to the wear over the operating life of the memory module hydraulic flow losses can also lead to an altered effect of causing the closing of a sub-channel-dependent throttling.
- the object of the present invention is achieved by a memory module having the features according to independent claim 1.
- the starting point is a storage module known from the prior art for a hydromechanical spring storage drive, wherein the spring storage drive is provided for actuating a high-voltage circuit breaker.
- the memory module includes in a known manner a pressure-tight housing, a projecting into the housing and axially movable accumulator piston, the housing pressure-tight sealing cap, and at least one introduced into the housing connecting channel for conveying an inner wall of the housing and head of the accumulator piston located, high-pressure fluid to a located outside of the housing high pressure passage of the spring accumulator drive.
- At least one pressure relief groove is circumferentially mounted on the head of the accumulator piston.
- the at least one Druckentlastungsnut ensures that a pressure compensation in the radial direction of the accumulator piston can take place, so that the pushing out of the head of the accumulator piston from the central position is reduced so much that a wear of the head or the guide band is avoided.
- the at least one Druckentlastungsnut can be introduced in the circumferential direction or spirally on the accumulator piston head, and its cross section may have any geometric shape.
- At least two pressure relief grooves in the same distance from each other and with the same geometric configuration in the circumferential direction of the head of the accumulator piston extending into this introduced.
- the thus configured at least two pressure relief grooves improve the pressure relief effect compared to only a single groove, or even compared to non-uniform designed and / or distributed grooves.
- this has at least one introduced into the head of the accumulator piston bore, through which the between the inner wall of the housing and the head of the accumulator piston fluid can flow to the connection channel.
- a through hole could also be located on the outside of the accumulator piston head grooves or notches as a hydraulic connection path to the connecting channel. Such a connection path is required if the opening of the connecting channel does not open into the housing bottom in the housing of the storage module, but only at some distance from it.
- a guide band is fastened to the circumference of the head of the accumulator piston and in the circumferential direction, which can be located both above and below or to the left or right of the pressure relief grooves and preferably runs parallel thereto.
- the closure lid guides the accumulator piston in its axial direction.
- Spring accumulator and closed high-voltage circuit breaker Fig. 2, the memory module of FIG. 1, with discharged spring accumulator and open high-voltage circuit breaker.
- a memory module for a hydromechanical spring drive can be seen.
- the spring-loaded drive is provided for actuating a high-voltage circuit breaker 12, and contains one or more of the memory module shown in FIG.
- the spring-loaded drive includes a hydraulically actuated piston-cylinder arrangement 16 indicated in FIG. 1, which acts directly mechanically on the high-voltage circuit breaker 12 and exerts a closing or opening force F on it.
- the hydraulic actuation of the piston-cylinder arrangement 16 takes place via a belonging to the spring accumulator drive hydraulic system, which comprises at least one high-pressure channel 1 1.
- the spring accumulator 14 belongs to the spring drive a spring accumulator 14, which is shown in Fig. 1 as a coil spring.
- springs can be used, such as disc springs.
- the spring accumulator 14 is here in a loaded, ie in compressed state, wherein the coil spring is pressed against a fixed support surface 15.
- the storage module of Fig. 1 includes a pressure-tight housing 1, a projecting into the housing 1 and in the housing 1 axially (along its longitudinal axis A) movable accumulator piston 2, a storage piston 2 axially leading and the housing pressure-tight sealing cap 4, and two in the housing 1 introduced connecting channels 5, 6 for conveying a located between the inner wall 7 of the housing and head 3 of the accumulator piston, high-pressure fluid to the outside of the housing located high-pressure channel 1 1 of the spring accumulator drive.
- the fluid is preferably hydraulic oil.
- At the head 3 of the accumulator piston a total of three Druckentlastungsnuten 8 are mounted.
- the three pressure relief grooves 8 extend at the same distance from each other and with the same geometric configuration along the circumferential direction of the head 3 of the accumulator piston.
- the tip of the reference arrow of the reference number 7 not only on the inner wall of the housing 1 but at the same time on the inner wall of the housing bottom. Since the connecting channels 5 and 6 are located at a considerable distance from the housing bottom, a hydraulic connection to these must be provided so that when moving the storage piston 2 into the housing 1, the fluid from the space between the inner wall 7 and head 3 of the accumulator piston can escape ,
- the head 3 of the accumulator piston has a through hole 9, which is designed in a T-shape.
- a guide band 10 is fixed in the circumferential direction, which consists of PTFE (polytetrafluoroethylene) and runs parallel to the pressure relief grooves 8.
- Fig. 2 shows the high voltage circuit breaker 12 in the open position.
- the spring accumulator 14 is discharged to provide additional opening energy.
- the coil spring is relaxed, whereby the accumulator piston 2 is moved into the housing 1.
- the high-pressure fluid is thereby moved through the through hole 9 in the direction of connection channels 5 and 6 and transported from there in the direction of the high-pressure channel 1 1, where it acts on the piston-cylinder assembly 16 that the opening operation of the high-voltage circuit breaker 12 is accelerated ,
- the storage module is shown at the end of the opening process, when the head 3 of the accumulator piston 2 has reached the housing bottom, i. when the accumulator piston 2 is fully retracted into the housing 1.
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)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202015107048 | 2015-12-23 | ||
DE202016100443.8U DE202016100443U1 (de) | 2015-12-23 | 2016-01-29 | Speichermodul für einen hydromechanischen Federspeicherantrieb |
PCT/EP2016/080029 WO2017108403A1 (de) | 2015-12-23 | 2016-12-07 | Speichermodul für einen hydromechanischen federspeicherantrieb |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3394453A1 true EP3394453A1 (de) | 2018-10-31 |
EP3394453B1 EP3394453B1 (de) | 2021-10-27 |
Family
ID=55445248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16806147.1A Active EP3394453B1 (de) | 2015-12-23 | 2016-12-07 | Hydromechanischer federspeicherantrieb mit einem speichermodul |
Country Status (6)
Country | Link |
---|---|
US (1) | US11286959B2 (de) |
EP (1) | EP3394453B1 (de) |
CN (1) | CN108368859B (de) |
DE (1) | DE202016100443U1 (de) |
HK (1) | HK1258993A1 (de) |
WO (1) | WO2017108403A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110931308B (zh) * | 2019-12-05 | 2021-09-24 | 永固集团股份有限公司 | 一种手动分合闸弹簧操动机构及其真空断路器 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2765731A (en) * | 1952-03-28 | 1956-10-09 | Edwards Eng Corp | Hydraulic ram caps for crushing and pressing rolls |
FR1252682A (fr) * | 1959-12-16 | 1961-02-03 | Perfectionnement aux pistons et notamment aux pistons de suspension oléopneumatique | |
US3559538A (en) * | 1968-12-23 | 1971-02-02 | Borg Warner | Actuator |
US4425836A (en) * | 1981-02-20 | 1984-01-17 | Government Innovators, Inc. | Fluid pressure motor |
US4461322A (en) * | 1983-05-06 | 1984-07-24 | Mills Carl R | Accumulator with piston-poppet seal assembly |
DE3408909A1 (de) * | 1984-03-10 | 1985-09-12 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | Hydraulischer antrieb |
FR2648583A1 (fr) * | 1989-06-14 | 1990-12-21 | Bendix France | Regulateur manometrique a fuite pour circuit hydraulique |
BR9307217A (pt) * | 1992-10-10 | 1999-03-30 | Hemscheidt Fahrwerktech Gmbh | Sistema de suspenção hidropneumático |
AU2997397A (en) * | 1996-05-15 | 1997-12-05 | Kelsey-Hayes Company | Electronically controlled hydraulic brake boost pressure control system |
DE19637052A1 (de) | 1996-09-12 | 1998-03-19 | Abb Patent Gmbh | Hydraulischer Antrieb |
DE102007060951A1 (de) * | 2007-12-18 | 2009-06-25 | Robert Bosch Gmbh | Druckspeicher, insbesondere für ein Hydroaggregat einer hydraulischen Fahrzeugbremsanlage mit elektronischer Radschlupfregelung |
DE102011120895A1 (de) * | 2010-10-08 | 2012-04-12 | Gm Global Technology Operations Llc, ( N.D. Ges. D. Staates Delaware) | Hydraulikdruckspeicher |
DE102010054665B3 (de) * | 2010-12-15 | 2012-02-02 | Abb Technology Ag | Speichermodul für einen hydraulischen Federspeicherantrieb |
JP5604345B2 (ja) * | 2011-03-23 | 2014-10-08 | カヤバ工業株式会社 | 流体圧シリンダのピストン軸受け構造 |
US8656959B2 (en) * | 2011-09-23 | 2014-02-25 | GM Global Technology Operations LLC | Hydraulic accumulator |
JP6208139B2 (ja) * | 2011-10-10 | 2017-10-04 | ロブソン, アンガス ピーターROBSON, Angus Peter | アキュムレータ |
US10570930B2 (en) | 2011-10-10 | 2020-02-25 | Angus Peter Robson | Accumulator |
CN104747534B (zh) * | 2013-12-27 | 2017-04-12 | 稳多企业股份有限公司 | 液压缸冲击缓冲装置 |
US20150337869A1 (en) * | 2014-05-20 | 2015-11-26 | Ford Global Technologies, Llc | Self-orienting piston spring accumulator |
-
2016
- 2016-01-29 DE DE202016100443.8U patent/DE202016100443U1/de active Active
- 2016-12-07 EP EP16806147.1A patent/EP3394453B1/de active Active
- 2016-12-07 WO PCT/EP2016/080029 patent/WO2017108403A1/de unknown
- 2016-12-07 US US16/063,835 patent/US11286959B2/en active Active
- 2016-12-07 CN CN201680075616.2A patent/CN108368859B/zh active Active
-
2019
- 2019-01-29 HK HK19101478.8A patent/HK1258993A1/zh unknown
Also Published As
Publication number | Publication date |
---|---|
WO2017108403A1 (de) | 2017-06-29 |
CN108368859A (zh) | 2018-08-03 |
US20180372125A1 (en) | 2018-12-27 |
EP3394453B1 (de) | 2021-10-27 |
HK1258993A1 (zh) | 2019-11-22 |
CN108368859B (zh) | 2020-11-06 |
DE202016100443U1 (de) | 2016-02-16 |
US11286959B2 (en) | 2022-03-29 |
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