EP2856488A1 - Dispositif de contrôle d'arc pour ampoule a vide - Google Patents
Dispositif de contrôle d'arc pour ampoule a videInfo
- Publication number
- EP2856488A1 EP2856488A1 EP13729987.1A EP13729987A EP2856488A1 EP 2856488 A1 EP2856488 A1 EP 2856488A1 EP 13729987 A EP13729987 A EP 13729987A EP 2856488 A1 EP2856488 A1 EP 2856488A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact device
- base
- arc
- contact
- electrodes
- 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
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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
- H01H33/6643—Contacts; Arc-extinguishing means, e.g. arcing rings having disc-shaped contacts subdivided in petal-like segments, e.g. by helical grooves
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
- H01H33/6644—Contacts; Arc-extinguishing means, e.g. arcing rings having coil-like electrical connections between contact rod and the proper contact
Definitions
- the invention relates to a device with two movable contacts relatively to each other, in particular used for vacuum bulbs, making it possible to control the arc that can be formed in the form of a lamp. forcing its trajectory while diffusing it.
- the stackable electrodes comprise a patch coupled to a base comprising slots and arrangements.
- the invention also relates to a medium voltage bulb and an electrical switchgear implementing the type of arc control developed by the contact device. STATE OF THE ART
- Medium voltage distribution electrical equipment can use vacuum bulbs which must then withstand the permanent current flow, typically of the order of 1250 A to 10 kA, without undergoing excessive heating, and to cut the short-circuit currents of the order of a few thousand amperes, typically from 25 kA to 100 kA.
- the vacuum bulbs thus comprise two electrodes movable relative to each other, which are in contact for the passage of nominal current and separate for cutting. The cut can cause the appearance of an electric arc that must be controlled and dissipate as quickly as possible.
- the arc control can thus be of axial magnetic field or AMF ("Axial Magnetic Field”) or radial or transverse magnetic field type, that is to say RMF or TMF ("Radial / Transverse Magnetic Field”) : see figures 1.
- the arc 1 In an RMF or TMF type arc control, the arc 1 is concentrated, contracted, into a column which typically has a diameter of about 1 cm. Thanks to the radial magnetic field or transverse created by the passage of the current in the contacts 3, this arc 1 performs a rotational movement along the periphery of the two contacts 3 and its thermal energy is distributed over a large area.
- many forms of contact 3 have been developed, in particular on the basis of the models of the "cut" type 3 A (see DE 372 48 13 or FIG. 1 A) for the RMF or of the "petal" type 3B (see FR 2 541 038 or FIG. 1B) for the TMF.
- the arc 5 is kept diffused, that is to say composed of several more or less parallel arc columns, in order to minimize the thermal energy density on the surface of the two contacts 7 through the natural zero of the current and its interruption: Figure 1C.
- the relatively uniform distribution of the energy of the arc 5 offers a very low rate of erosion.
- the arc 5 can be kept relatively diffuse for given rms values, in certain phases of the current wave, especially when the instantaneous current is very high and in strong asymmetries, the determined parameters do not allow to completely diffuse this arc 5, and a main column, surrounded by a halo, can be generated.
- the aim of the invention is therefore to propose a mixed control of the arc generated at the cut by a new contact device, based on the fact that the force which is responsible for the diffusion of the arc is of a different nature from the force itself. conferring a rotational movement.
- the invention thus relates to a device comprising two contact electrodes for in particular a medium voltage vacuum bulb.
- the two electrodes of the device are mirror-symmetrical with each other, and each mounted on one rod: in the closed position, one surface of each electrode is in contact with the other; in the open position, a translation along at least one of the rods has been performed, and the two surfaces are separated from each other while remaining parallel.
- Each electrode comprises a contact pad associated with a base.
- the two pellets are superimposable at the level of the circular contact surface of the electrode.
- the pellets are in the form of solid discs, flat, and material adapted to the presence of arc, including a copper alloy.
- the pellet On its surface opposite to the contact surface, the pellet is coupled to a base, preferably by brazing.
- the coupling surface of the base is circular, of diameter less than or equal to the diameter of the pellet; arrangements may be provided, for example a groove associated with a rim of the pellet.
- the base may be in the form of disc, or cup, of conductive material, preferably copper; advantageously, its external shape does not comprise a sharp angle, with the possible exception of the coupling surface.
- the base can be hollowed in its center, so that the pellet is only secured to a peripheral rim; a metal reinforcement can then be put in place in the center of the hollow to strengthen the structure.
- the base comprises a plurality of cuts, slots or grooves, which make it possible to determine the trajectory of the current lines flowing therein, which is the basis of the phenomenon of diffusion of the arc.
- the base comprises at least three, preferably five, through slots between the coupling face and the opposite face, which separate the base into quarters.
- the slots extend between a first peripheral end, which can open the base or not, and a second end internal to the base, towards its center; at their inner end, the slots are tangent to a circle concentric with the rod.
- the slots may be rectilinear or curved; preferably, all the slots are superimposable between them, and spaced from each other by a constant angle so that the quarters are identical.
- the base may be advantageous to provide recesses also at the rim used for securing with the pellet.
- the central hollow of the base may extend at each quarter, for example to form a coupling surface comprising uniformly distributed ring sectors delimited on one side by one of the cutouts.
- the securing part of the base may be of non-circular adapted shape, for example with a central star hollow.
- FIG. 2A illustrates the operating principle of the contact device according to one embodiment of the invention
- Figures 2B and 2C show a contact device according to a preferred embodiment of the invention, exploded and in the mounting position
- Figure 2D illustrates a vacuum interrupter according to one embodiment of the invention.
- Figures 3A and 3B show alternative mounting of the chip on a base in a device according to the invention.
- Figure 6 shows the dispersion in the measurement of electrical resistance in a commercial lamp provided with a device according to the invention and a conventional device.
- the magnetic force of a radial or transverse field causes the arc to rotate but allows it to contract, while the magnetic force of the axial field allows the arc to be held.
- arc as diffuse as possible over a certain surface of the contacts without changing arc zone.
- the rotation effect of the arc is obtained by the radial magnetic force created by the global movement of the current in the electrode structure of the contact device;
- the diffusion effect of the arc is obtained by forcing the current lines to follow defined paths with a high current density when it enters the electrode of the contact device;
- the arc 9 is diffused as with an AMF axial arc control, but undergoes a rotational movement as in TMF / RMF, this however over the entire surface of the contacts, including the center of the latter: see Figure 2A.
- This type of arc control therefore offers better breaking capacity than axial control while maintaining a very low level of erosion.
- the contacts between which the arc arises are formed in two parts, a support for distributing the current lines and for accelerating the rotation of the arc and then a contact surface at which the arc burns.
- the path of the current is defined by the form of cuts in the support, which can be straight or curved to define the spiral effect, and the fact that the two contacts are symmetrical in mirror, that is to say non-superimposable.
- the contact device 10 comprises two electrodes 12, commonly called “contacts”, mirror-symmetrical with respect to each other.
- the two electrodes 12 are mounted on two rods 14 coupled to actuating means (not shown) to allow relative movement between the two electrodes 12, said movement being effected by translation along the rod 14.
- one of the rods 14i is fixedly mounted in the vacuum bulbs 16 and the other 14 2 is movable in translation ( Figure 2D).
- the device 10 is used in a vacuum interrupter 16, it is placed within an insulating enclosure, conventionally ceramic, with often a metal screen 18, made of copper or stainless steel for example, located around the electrodes 12 which whatever their relative position.
- the electrodes 12 are generally circular in order to better distribute the electric field lines; their diameter varies according to the fault current that the vacuum interrupter 16 must cut and restore, in particular between 20 mm for fault currents of less than 20 kA to more than 140 mm for fault currents of the order of 100 kA or more.
- Each electrode 12 consists of a base 30 of low-resistivity material, generally copper, and a contact patch 20 forming the contact surface between the two electrodes 12.
- the patch 20, sometimes called also "contact tip” is a solid disk, conductive material conventionally used in this application, including a copper / chromium or copper / tungsten alloy; the disc 20 could also be bulging.
- the contact surface 22 of the pellet 20 is flat, without presenting a particular profile, even if it would be possible to add cuts therein; alternatively, as shown in Figure 3A, the pad 20 'could, on its opposite side to the contact surface 22, comprise a flange 24 which allows a protection of the support 30 vis-à-vis the effects of the arc, covering the periphery. But in fact, a solid disc and flat without cutting, easy to manufacture and therefore cheap, guarantees the best dielectric performance of the vacuum bulb 16 in which the contact device 10 will be mounted.
- the thickness of the tablet 20 may vary from one to a few millimeters depending on the level of fault current that the vacuum interrupter 16 has to interrupt and / or restore.
- the pellet 20 may be of the same size as the face of the support 30 to which it is secured.
- the diameter of the disk 20 is greater than that of the base 30, for example of the order of its thickness, in particular of 0.5 mm, 1 mm or 5 mm; the overhangs 26 can reach several times the thickness of the pellet 20, so as to extend the arc diffusion zone.
- Each pellet 20 is therefore associated with a base, or base 30, preferably by brazing.
- the base 30 comprises a circular coupling surface 32, superposable on the pellet 20 or of slightly smaller diameter; its general shape may be a disc, or a cup, but preferably, the base 30 has rounded edges 34 to ensure good dielectric performance.
- the thickness of the base 30 may be of the order of a few millimeters, up to ten, depending on the rated current that the bulb 16 must conduct permanently.
- the base 30 is hollowed at its center so as to leave a rim 36 on which the wafer 30 rests.
- the depth of the recess 37 is a few millimeters, advantageously 2 mm, which makes it possible to minimize the electrical resistance while guaranteeing good compensation. case of crushing of the contacts during the hundreds, or even thousands, of maneuvers that a vacuum interrupter carries out.
- a central reinforcement 38 can be put in place to support the pellet 20; the reinforcement 38 is preferably made of stainless steel and cylindrical; in a preferred embodiment illustrated in FIG. 3B, it is placed in an appropriate arrangement 39 of the base 30.
- the base 30 comprises cutouts 40 which force the trajectories of the current lines during their passage from one electrode 12 to another.
- the cuts are slots 40 passing through the base 30 between its coupling surface 32 and the opposite face, to form quarters 42 of the base 30.
- the slots 40 extend between a first peripheral end 44 and a second central end 46; advantageously, the slots 40 are open, that is to say that the first end 44 corresponds to the outer wall of the base 30.
- the slots 40 do not open, and the first ends 44 form a circle inscribed in the base 30; the circle thus formed typically has a diameter of 1 to 2 mm, or even a few millimeters, less than that of the base 30.
- the direction of the current lines I depends on the orientation of the cutouts 40: to flow between the two electrodes 12, the current I must pass from the center of the base 30 at its periphery to the cathode, and conversely on the anode, in the volumes defined by the blanks 40.
- the slots 40 are arranged to be tangent at their second end 46 to a circle 48 centered with respect to the base 30.
- the angle has thus defined between the slot 40 and the circle 48 is preferably identical for all the slots 40 of the base 30, but anyway, the angles are always in the same direction, that is to say that the quarters 42 are of increasing size of the center to the periphery, the size being measured along the arc centered on the base 30 / the rod 14.
- the slots 40 are superposable and / or uniformly distributed around said circle 48, the slots 40 differing from each other. one of the other only p ar a rotation about the center of the base 30, preferably a constant angle.
- the width of the cutouts 40 is sufficient to allow the separation of the zones in which the stream lines I circulate, which confers on them their trajectories and controls their density according to whether they are near the center or at the periphery of the base 30, while remaining limited to maintain the pedestal 30 stable; preferably, the slots 40 are of the order of 1 mm wide.
- at least three slots are present, but the increase in their number makes it possible to optimize the trajectories of the current lines when they pass through the base 30.
- the soldering flange 36 To force the trajectories of the current lines I and cause the rotation and the acceleration of the arc, it is advantageous to further provide recesses 52 on the soldering flange 36: thus, as illustrated in FIG. current lines I concentrate on an edge portion of the recess 50, on the rim 36.
- the width of the recesses 52 is adapted to the base 30 so as to ensure sufficient electrical conduction between the two parts 20, 30 of the electrode 12, while causing rotation and better acceleration of the arc.
- the recesses 52 are identical for all the quarters 42 and represent about a quarter to half of the rim 36.
- the device 10 comprises two electrodes 12 placed face to face, with cutouts 40 in mirror symmetry, in order to obtain a radial field: the slots 40 are thus in the extension one. on the other, separated only by the pellets 20.
- the current lines I which circulate inside the quarters 42 of the base 30 create a magnetic field which generates a force which gives a rotational movement to the arc, unlike the arc control RMF or TMF, in which the current flows in the wafer 20 to create the magnetic field that rotates the arc.
- the arc meanwhile remains between the two pellets 20, diffused over the entire surface: the macroscopic trajectory of the current in the two parts of the arc control generates a magnetic force which imposes a rotational movement on the arc independently of the fact that it be broadcast.
- the macroscopic trajectory of the current in the two parts of the arc control generates a magnetic force which imposes a rotational movement on the arc independently of the fact that it be broadcast.
- the diffusion effect of the arc is obtained by forcing the current lines to follow definite trajectories with a high current density.
- the current leaves the rod of the bulb 14i for the cathode, it flows from the center of the base towards its periphery - and passes through the zone 54 which offers little material for the current lines I; at the periphery of the base of the cathode, the current lines I pass through a larger volume of material, and disperse by occupying the available volume before passing to the arc which has formed between the two contacts, then to the second contact (anode) to make the path in the opposite direction to the rod 14 2 of the bulb.
- the contact device 10 illustrated in FIG. 2C has been used in place of an existing contact device in VG vacuum bulbs marketed by Schneider Electric: at equal dimensions (60 mm arc control with a breaking capacity of 31.5 kA at 17.5 kV), the vacuum interrupter can cut fault currents up to 20% higher than the maximum currents that can be interrupted by a standard bulb.
- the vacuum interrupter can cut fault currents up to 20% higher than the maximum currents that can be interrupted by a standard bulb.
- the electrical resistance of the bulbs with the new arc control, allowed by the device according to the invention is lower (An average value decreased by two in the illustrated example), that is to say that heating of the circuit breaker poles, proportional to said electrical resistance, is limited; it is also noted that the dispersion of the measurements is lower, with in particular a standard deviation of less than 1 for an average value of the resistance of the order of 7.8 ⁇ compared to a standard deviation greater than 3 for a mean value of the resistance. of the order of 15.3 ⁇ .
- switchgear and vacuum interrupters 16 offer the following benefits:
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1201483A FR2991097B1 (fr) | 2012-05-24 | 2012-05-24 | Dispositif de controle d'arc pour ampoule a vide |
| PCT/FR2013/051091 WO2013175112A1 (fr) | 2012-05-24 | 2013-05-17 | Dispositif de contrôle d'arc pour ampoule a vide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2856488A1 true EP2856488A1 (fr) | 2015-04-08 |
| EP2856488B1 EP2856488B1 (fr) | 2017-02-01 |
Family
ID=46754490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13729987.1A Active EP2856488B1 (fr) | 2012-05-24 | 2013-05-17 | Dispositif de contrôle d'arc pour ampoule a vide |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9460874B2 (fr) |
| EP (1) | EP2856488B1 (fr) |
| CN (2) | CN104335314A (fr) |
| BR (1) | BR112014028844B1 (fr) |
| FR (1) | FR2991097B1 (fr) |
| RU (1) | RU2667091C2 (fr) |
| WO (1) | WO2013175112A1 (fr) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597273B (zh) * | 2016-12-25 | 2023-06-16 | 河北工业大学 | 一种真空开关电弧综合实验装置 |
| DE102019216873A1 (de) * | 2019-10-31 | 2021-05-06 | Siemens Aktiengesellschaft | Kontaktelement zum Kontaktieren mit einem weiteren Kontaktelement für einen Leistungsschalter, insbesondere eine Vakuum-Schaltröhre, ein Leistungsschalter, insbesondere eine Vakuum-Schaltröhre, und ein Verfahren zum Herstellen eines Kontaktelements |
| CN111900030A (zh) * | 2020-08-31 | 2020-11-06 | 四川艾贝斯科技发展有限公司 | 真空断路器的真空开关执行机构 |
| CN111883383A (zh) * | 2020-08-31 | 2020-11-03 | 四川艾贝斯科技发展有限公司 | 多路同步控制的多功能真空断路器 |
| CN111883384A (zh) * | 2020-08-31 | 2020-11-03 | 四川艾贝斯科技发展有限公司 | 单路控制的多功能真空断路器 |
| JP7736102B2 (ja) * | 2024-02-21 | 2025-09-09 | 株式会社明電舎 | 電極構造,真空インタラプタ |
Family Cites Families (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52150571A (en) * | 1976-06-09 | 1977-12-14 | Hitachi Ltd | Vacuum breaker electrode |
| JPS58100325A (ja) * | 1981-12-09 | 1983-06-15 | 三菱電機株式会社 | 真空しや断器 |
| FR2541038B1 (fr) | 1983-02-15 | 1986-07-11 | Elektrotekhnichesky Inst Ime | Systeme de contact d'une chambre a vide pour extinction d'arc |
| SU1188799A1 (ru) * | 1984-02-28 | 1985-10-30 | Styukhin Sergej A | Вакуумный выключатель |
| JPS61126720A (ja) * | 1984-11-22 | 1986-06-14 | 株式会社日立製作所 | 真空遮断器 |
| DE3724813A1 (de) | 1987-07-27 | 1989-02-09 | Bbc Brown Boveri & Cie | Kontaktanordnung fuer einen vakuumschalter |
| JPH05190062A (ja) * | 1992-01-16 | 1993-07-30 | Hitachi Ltd | 真空遮断器用電極 |
| JP2861757B2 (ja) | 1992-11-10 | 1999-02-24 | 三菱電機株式会社 | 真空バルブの電極装置 |
| JPH10505939A (ja) * | 1994-09-22 | 1998-06-09 | シュラメッカ エルンスト | 真空サーキットブレーカ・コンタクト装置 |
| EP0740321A3 (fr) * | 1995-04-26 | 1998-04-22 | Hitachi, Ltd. | Electrode pour disjoncteur sous vide |
| RU2098880C1 (ru) * | 1995-12-26 | 1997-12-10 | Всероссийский электротехнический институт им.В.И.Ленина | Контактная система вакуумной дугогасительной камеры |
| US5777287A (en) * | 1996-12-19 | 1998-07-07 | Eaton Corporation | Axial magnetic field coil for vacuum interrupter |
| GB2338111B (en) * | 1999-02-02 | 2001-03-21 | Alstom Uk Ltd | Improvements relating to vacuum switching devices |
| DE19957228B4 (de) * | 1999-11-27 | 2009-04-23 | Moeller Gmbh | Kontaktanordnung für eine Vakuumschaltkammer |
| KR100386845B1 (ko) * | 2000-10-16 | 2003-06-09 | 엘지산전 주식회사 | 종자계 방식 진공인터럽터용 전극구조 |
| JP2002334641A (ja) * | 2001-05-09 | 2002-11-22 | Meidensha Corp | 真空遮断器の電極及びその製造方法 |
| JP2003031066A (ja) * | 2001-07-17 | 2003-01-31 | Hitachi Ltd | 電極、その製造方法、遮断器、その加工方法及び生産物 |
| CN1981354B (zh) | 2004-07-05 | 2011-10-26 | Abb研究有限公司 | 用于真空开关的真空开关室和接触件装置 |
| CN2733566Y (zh) * | 2004-09-04 | 2005-10-12 | 王政 | 真空灭弧室电弧均布式电极 |
| JP4667032B2 (ja) * | 2004-12-10 | 2011-04-06 | 三菱電機株式会社 | 真空バルブ |
| FR2946792A1 (fr) * | 2009-06-10 | 2010-12-17 | Areva T & D Sa | Enroulement pour contact d'ampoule a vide a moyenne tension a endurance amelioree, ampoule a vide et disjoncteur, tel qu'un disjoncteur sectionneur d'alternateur associes. |
| FR2946790B1 (fr) * | 2009-06-10 | 2011-07-01 | Areva T & D Sa | Contact pour ampoule a vide a moyenne tension a coupure d'arc amelioree, ampoule a vide et disjoncteur, tel qu'un disjoncteur sectionneur d'alternateur associes. |
| JP2013012299A (ja) * | 2009-10-28 | 2013-01-17 | Mitsubishi Electric Corp | 真空バルブ |
| EP2434514A1 (fr) | 2010-09-24 | 2012-03-28 | ABB Technology AG | Interrupteur sous vide pour agencement de disjoncteur |
| KR101085286B1 (ko) * | 2010-10-18 | 2011-11-22 | 엘에스산전 주식회사 | 진공 인터럽터의 접점 |
| EP2731120A1 (fr) * | 2012-11-08 | 2014-05-14 | ABB Technology AG | Système d'interrupteur à vide pour disjoncteur moyenne tension avec des contacts TMF en forme de coupe |
-
2012
- 2012-05-24 FR FR1201483A patent/FR2991097B1/fr not_active Expired - Fee Related
-
2013
- 2013-05-17 CN CN201380026673.8A patent/CN104335314A/zh active Pending
- 2013-05-17 WO PCT/FR2013/051091 patent/WO2013175112A1/fr not_active Ceased
- 2013-05-17 CN CN201910572726.5A patent/CN110310860B/zh active Active
- 2013-05-17 EP EP13729987.1A patent/EP2856488B1/fr active Active
- 2013-05-17 BR BR112014028844-5A patent/BR112014028844B1/pt active IP Right Grant
- 2013-05-17 RU RU2014152279A patent/RU2667091C2/ru active
- 2013-05-17 US US14/400,436 patent/US9460874B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| BR112014028844B1 (pt) | 2021-07-27 |
| CN110310860B (zh) | 2022-01-21 |
| RU2014152279A (ru) | 2016-07-20 |
| US20150162151A1 (en) | 2015-06-11 |
| FR2991097B1 (fr) | 2014-05-09 |
| CN110310860A (zh) | 2019-10-08 |
| BR112014028844A2 (pt) | 2017-06-27 |
| RU2667091C2 (ru) | 2018-09-14 |
| US9460874B2 (en) | 2016-10-04 |
| FR2991097A1 (fr) | 2013-11-29 |
| WO2013175112A1 (fr) | 2013-11-28 |
| EP2856488B1 (fr) | 2017-02-01 |
| CN104335314A (zh) | 2015-02-04 |
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