EP2015870B1 - Verfahren zum erden einer hochspannungselektrode - Google Patents

Verfahren zum erden einer hochspannungselektrode Download PDF

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Publication number
EP2015870B1
EP2015870B1 EP06721892A EP06721892A EP2015870B1 EP 2015870 B1 EP2015870 B1 EP 2015870B1 EP 06721892 A EP06721892 A EP 06721892A EP 06721892 A EP06721892 A EP 06721892A EP 2015870 B1 EP2015870 B1 EP 2015870B1
Authority
EP
European Patent Office
Prior art keywords
high voltage
process vessel
electrode
voltage electrode
lever
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.)
Active
Application number
EP06721892A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2015870A1 (de
Inventor
Christoph Anliker
Reinhard MÜLLER-SIEBERT
Daniel Emanuel Maurer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Selfrag AG
Original Assignee
Selfrag AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Selfrag AG filed Critical Selfrag AG
Priority to DK06721892.5T priority Critical patent/DK2015870T3/da
Publication of EP2015870A1 publication Critical patent/EP2015870A1/de
Application granted granted Critical
Publication of EP2015870B1 publication Critical patent/EP2015870B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
    • B02C2019/183—Crushing by discharge of high electrical energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49169—Assembling electrical component directly to terminal or elongated conductor

Definitions

  • the invention relates to a method for grounding a high-voltage electrode of an electrodynamic fragmentation system, an arrangement for carrying out the method, a system with the arrangement and a use of the arrangement or the system according to the preambles of the independent claims.
  • high-voltage breakdowns are produced by the material to be comminuted in a process vessel between the working end of a high-voltage electrode subjected to high-voltage pulses and a base electrode, which is usually at neutral potential, whereby it is comminuted the material is coming.
  • a base electrode which is usually at neutral potential
  • the working end of the high-voltage electrode is made temporarily accessible, eg for maintenance purposes or for the purpose of reloading the process vessel, it is necessary for reasons of personal safety to ground the high-voltage electrode in order to reliably prevent the unintentional occurrence of a high-voltage pulse at the working end of the electrode.
  • a first aspect of the invention relates to a method for grounding the high-voltage electrode of an electrodynamic fragmentation system in a non-operating state, in which the working end of the high-voltage electrode is accessible and thus a risk to persons when working on or in the vicinity of it in the event that the high-voltage electrode unintentionally or unnoticed with high voltage is applied.
  • Such Fragment michsstrom have a process vessel, within which in the fragmentation operation, the working-side electrode end, a base electrode and the material to be fragmented are arranged and to fragment the material high voltage discharges between the working side electrode end and the base electrode are generated.
  • a grounding device is provided, by means of which the high-voltage electrode can be grounded by contacting it at its working-side end of the electrode.
  • This earthing device is thus coupled to the high-voltage electrode and the process vessel, thus operatively connected to the arrangement of process vessel and high-voltage electrode, so that it automatically contacts the working-side electrode end when it is made accessible, thus grounding the high-voltage electrode.
  • the working end of the electrode is made accessible to persons, whereby automatically a grounding of the high voltage electrode with the grounding device by the working side electrode end is contacted with the grounding device in the region of the working side electrode end.
  • the working-side electrode end or working end of the high-voltage electrode is understood as the electrically conductive region of the high-voltage electrode which protrudes from the insulator thereof on the side of the high-voltage electrode facing the process vessel and carries the electrode tip, from which the high-voltage discharges take place toward the base electrode during operation.
  • the method according to the invention results in an automatic, reliable and easily visible grounding of the high-voltage electrode when the working end of the electrode is accessible, so that optimum personal protection results.
  • the working end of the electrode end is made accessible exclusively or at least partially by opening the process vessel, e.g. by opening a revision flap or removing a cap.
  • the accessibility of the working side takes place End of the electrode exclusively or at least partially in that the high voltage electrode and the process vessel are removed from each other, preferably by the high voltage electrode is extended by lifting the same relative to the process vessel and / or lowering the process vessel relative to the high voltage electrode from the process vessel.
  • the advantage is that it is also suitable for Fragmentieruhgsanlagen in which the high-voltage electrode is fixedly connected to a rigid high-voltage supply, which is e.g. in systems with oil or gas insulated high voltage feeders is the case.
  • a grounding device with a lever mechanism is used. With the lever mechanism, a grounded contact surface is applied to the working electrode end, thereby grounding the high voltage electrode.
  • the movement for applying the contact surface to the working-side end of the electrode is effected exclusively or at least partially by gravity and / or spring force.
  • the grounding device is preferably designed and coupled with the high-voltage electrode and the process vessel in such a way that a lever of the lever mechanism carrying the contact surface is automatically released when the working end of the electrode is made accessible, then fully or partially gravitationally and / or spring-driven towards the working-side electrode end to be moved, where its movement is stopped by abutting the contact surface at the working end of the electrode.
  • the grounding device is configured and coupled to the high voltage electrode and the process vessel such that the application of the contact surface to the working end of the electrode is mechanically positively coupled
  • the end of the electrode on the working side inevitably leads mechanically to the application of the contact surface to the working-side end of the electrode and thus to grounding of the high-voltage electrode.
  • a maximum of security can be achieved.
  • this lever mechanism has exactly one moving lever, this lever being pivoted to apply the contact surface to the working side electrode end about a preferably horizontal or vertical axis of rotation.
  • Such lever mechanisms have a minimum of moving parts and are robust and inexpensive.
  • lever is additionally displaced along the axis of rotation when moving the lever for applying the contact surface to the working-side end of the electrode, which is preferred, two-dimensional pivoting movements can be realized in a simple manner, which can be advantageous in particular in confined spaces.
  • the contact between the working-side electrode end and the grounding device is made by means of a grounded contact brush, whereby a secure grounding can be ensured even when the high-voltage electrode is soiled.
  • a second aspect of the invention relates to an arrangement which is suitable for carrying out the method according to the first aspect of the invention.
  • the arrangement comprises a high voltage electrode and a process vessel associated with the high voltage electrode, in which, when the device is operated as intended, e.g. as part of an electrodynamic fragmentation system, pulsed high-voltage discharges take place between the working-side electrode end and a base electrode.
  • the high-voltage electrode and the process vessel are movable relative to one another such that they can be positioned optionally in an operating position in which the high-voltage electrode is immersed with its working-side electrode end in the process vessel, and in a non-operating position in which the working-side electrode end is arranged outside the process vessel ,
  • the arrangement has a grounding device.
  • the grounding device is configured and coupled to the high-voltage electrode and the process vessel so that it is automatically brought into contact with the working-side electrode end when positioned in the non-operating position or when changing from the operating position to the non-operating position, thereby grounding the high-voltage electrode.
  • the arrangement according to the invention makes it possible to provide electrodynamic fragmentation systems in which the high-voltage electrode is grounded automatically and reliably when its working-side end of the electrode is made accessible, and the Grounding is also visually recognizable. As a result, the protection of persons can be significantly improved.
  • the grounding device is also designed and coupled to the high-voltage electrode and the process vessel so that it is automatically brought out of contact with the working-side electrode end when positioning in the operating position or when switching from the non-operating position to the operating position the grounding of the high voltage electrode is canceled and the generation of high voltage discharges between the high voltage electrode and the base electrode becomes possible.
  • the earthing device comprises a lever mechanism by means of which a contact surface can be brought into contact or out of contact with the working end of the electrode for earthing or grounding the high-voltage electrode.
  • the lever mechanism is advantageously designed such that it is exclusively or at least partially gravity and / or spring-actuated in one of its two directions of movement, it being preferred if this is the direction of movement, in which the contacting of the contact surface with the working side electrode end is effected ,
  • the lever mechanism is thus coupled to the high voltage electrode and the process vessel or operatively connected, that the contact surface, when moving the high voltage electrode and the process vessel relative to each other from the non-operating position to the operating position, lifted and removed by mechanical forced coupling from the working side electrode end of the high voltage electrode.
  • the mechanical positive coupling is advantageously realized such that a contact surface bearing lever of the lever mechanism through the process vessel, and preferably through its upper edge, pushed away and so the contact surface is lifted from the working side electrode end and removed from it.
  • the lever bearing the contact surface is preferably designed such that it has a curved stop track for the upper edge of the process vessel, along which the upper edge contacts the lever when pushing away.
  • the lever of the grounding device is also configured in this way and the contact surface is arranged on it in such a way that it is impossible to touch the contact surface with the process vessel when the lever is pushed away, which is preferred, the use of sensitive contact surfaces, such as, for example, contact brushes, possible, which could otherwise be easily damaged.
  • the lever mechanism is coupled to the high voltage electrode and to the process vessel so that the contact surface moves from the operating position to the non-operating position by mechanical positive coupling to the high voltage electrode as the high voltage electrode and process vessel move relative to each other and at the working end of the electrode is applied. Due to the positive coupling in this direction of movement has the advantage that the accessibility of the working end of the electrode mechanically inevitably causes grounding of the high voltage electrode, whereby a maximum of security can be achieved. It is also envisaged to carry out the mechanical force-coupled movement by gravity and / or spring force.
  • the lever mechanism comprises exactly one movable lever, which is pivotable about a preferably horizontal or vertical axis of rotation for contacting or disengaging the contact surface with the working-side electrode end.
  • Such lever mechanisms have a minimum of moving parts and are robust and inexpensive.
  • the lever for contacting or AusserANDbring the contact surface with the working side electrode end is also displaceable along the axis of rotation. In this way, complicated, multi-dimensional pivoting movements can be realized with a low design overhead.
  • the contact surface is formed by a contact brush, which has the advantage that a secure grounding can be effected even with a dirty working end of the electrode.
  • the arrangement is configured such that the relative movement between the high-voltage electrode and the process vessel required for positioning in the inoperative position can be effected by lowering the process vessel with respect to the high-voltage electrode, e.g. by means of a lifting table, which carries the process vessel, wherein it is preferred if this can be done with simultaneously fixed high-voltage electrode.
  • a lifting table which carries the process vessel, wherein it is preferred if this can be done with simultaneously fixed high-voltage electrode.
  • a third aspect of the invention relates to a system with an arrangement according to the second aspect of the invention and with a high voltage pulse generator for applying high voltage pulses to the high voltage electrode.
  • the advantages of the invention occur particularly clearly zü days.
  • a fourth and final aspect of the invention relates to the use of the arrangement according to the second aspect of the invention or the plant according to the third aspect of the invention for the electrodynamic fragmentation of preferably electrically poorly conductive material, preferably of concrete or slag.
  • FIGS. 1a and 1b each show a schematic representation of a first arrangement according to the invention in the side view, once in a non-operating position ( Fig. 1a ) and once in an operating position ( Fig. 1b ).
  • the arrangement comprises a fixed high voltage electrode 1, a vertically movable by means of a lifting table 4 process vessel 2 and a grounding device 3, which is fixed to the high voltage electrode 1 supporting structure (not shown).
  • a double-sided pivoting lever 7 which is pivotally mounted about a horizontal axis of rotation D to a fixed support arm 8 and at one of its two free ends a grounded via a flexible strand 15 contact brush 9 carries, with which it contacts the electrode tip 6 and thereby grounded ,
  • a tension spring 10 with the support arm 8, such that the contact brush 9 is pressed by the spring force of the tension spring 10 against the electrode tip 6.
  • the pivot lever 7 On the underside of the contact brush 9 carrying the lever side, the pivot lever 7 has a curved contour 11, which, as will be explained below, serves as a curved stop track 11 for the upper edge of the process vessel 2.
  • the grounding device 3 in the present case comprises a simple pivoting lever 13, which at its free end a contact brush 9 carries, with which he contacted the electrode tip 6 and thereby grounded.
  • the pivot lever 13 is fixedly secured to a support column 14 rotatable about a vertical axis of rotation D.
  • the support column 14 is mounted such that it simultaneously displaces vertically along its longitudinal axis at a rotation about the rotation axis D, which in the present case is effected in that the axial mounting of the support column 14 consists of a roller, which is on a curved path supported (not shown).
  • FIGS. 3a and 3b show representations like the FIGS. 2a and 2b a third inventive arrangement, which is similar to the second inventive arrangement described above.
  • the grounding device 3 comprises a simple pivot lever 13 which carries at its free end a contact brush 9, with which it contacts the electrode tip 6 and thereby grounded.
  • a fixed support column 17 is used and the pivot lever 13 via a guide sleeve 18 with a cam track 19, in which a fixed to the support column 17 connected roller (not shown) is connected to the support column 17, such that it is rotatable about the axis of rotation D relative to the support column 17, with simultaneous vertical displacement along this axis D.
  • FIG. 4 shows a perspective view of a concrete embodiment of the in the FIGS. 1a and 1b schematically illustrated high-voltage electrode with grounding device, which would form a erfindungsgmässe arrangement together with an associated process vessel.
  • the working-side electrode end 5 of the high-voltage electrode 1 is formed by a disk-shaped field relief 17 and a replaceable electrode tip 6 screwed into it centrally.
  • the high-voltage electrode 1 carries a concentric collar 16 for enclosing the opening of an associated process vessel (not shown) in operation, to which the support arm 8 der.Erdungsvorraum 3 is attached.
  • the double-sided pivot lever 7 is pivotally mounted around the horizontal axis of rotation D around the support arm 8 and carries on its electrode-side lever side via a flexible strand 15 connected to the grounded mounting bracket 8 contact brush 9, which in the illustrated Situation at the field relief 17 is applied and the high voltage electrode 1 grounded by it.
  • the outermost end of the pivot lever 7 forms a protruding nose 12, which as already in the FIGS. 1a and 1b described serves to prevent contact of the contact brush 9 with the process vessel 2 and possibly associated damage thereof.
  • the high voltage electrode 1 side facing away from the double-sided pivot lever 7 is connected via a tension spring 10 with the support arm 8, such that the contact brush 9 is pressed by the spring force of the tension spring 10 against the field relief 17.
  • On the underside of the contact brush 9 carrying electrode-side lever side of the pivot lever 7 has a curved stop track 11 for the upper edge of a process vessel 2.

Landscapes

  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Disintegrating Or Milling (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Cable Accessories (AREA)
  • Elimination Of Static Electricity (AREA)
EP06721892A 2006-03-30 2006-03-30 Verfahren zum erden einer hochspannungselektrode Active EP2015870B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK06721892.5T DK2015870T3 (da) 2006-03-30 2006-03-30 Fremgangsmåde til jording af en højspændingselektrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2006/000183 WO2007112599A1 (de) 2006-03-30 2006-03-30 Verfahren zum erden einer hochspannungselektrode

Publications (2)

Publication Number Publication Date
EP2015870A1 EP2015870A1 (de) 2009-01-21
EP2015870B1 true EP2015870B1 (de) 2009-12-30

Family

ID=37401630

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06721892A Active EP2015870B1 (de) 2006-03-30 2006-03-30 Verfahren zum erden einer hochspannungselektrode

Country Status (10)

Country Link
US (1) US8071876B2 (da)
EP (1) EP2015870B1 (da)
JP (1) JP4914490B2 (da)
AT (1) ATE453455T1 (da)
AU (1) AU2006341523B2 (da)
CA (1) CA2645268C (da)
DE (1) DE502006005813D1 (da)
DK (1) DK2015870T3 (da)
ES (1) ES2337924T3 (da)
WO (1) WO2007112599A1 (da)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2710432C1 (ru) * 2016-08-31 2019-12-26 Зельфраг Аг Способ эксплуатации высоковольтной импульсной системы
US10833568B2 (en) * 2019-02-05 2020-11-10 Siemens Energy, Inc. Generator grounding strap module
CN117937125B (zh) * 2024-03-21 2024-07-12 山东荣光能源科技有限公司 一种电力设计线路施工用稳定型电力接地桩
CN118362848B (zh) * 2024-06-20 2024-08-16 海堃石化科技有限公司 一种变压器绝缘油性能检测装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1289121A (da) 1969-02-10 1972-09-13
SU845843A1 (ru) 1973-04-04 1981-07-15 Научно-Исследовательский Институт Высоких Напряжений При Томском Ордена Трудового Красного Знамени Политехническом Институте Им.С.М.Кирова Электроимпульсна дробильно-измель-чиТЕльНА KAMEPA
CA1205536A (en) * 1985-02-08 1986-06-03 Harvey J. Macgregor Grounding electrode for use in building construction
SU1790069A1 (ru) 1990-04-06 1996-08-10 Экспериментальный кооператив "ЭГИДА-А" Высоковольтный электрод установки электрогидравлического дробления
RU2013135C1 (ru) * 1991-03-05 1994-05-30 Научно-исследовательский институт высоких напряжений при Томском политехническом университете Высоковольтный электрод для электроимпульсного разрушения материалов
RU2002504C1 (ru) 1991-10-23 1993-11-15 Инновационна промышленно-строительна компани "АЭЛИМП" Электроимпульсное дробильное устройство
DE19534232C2 (de) 1995-09-15 1998-01-29 Karlsruhe Forschzent Verfahren zur Zerkleinerung und Zertrümmerung von aus nichtmetallischen oder teilweise metallischen Bestandteilen konglomerierten Festkörpern und zur Zerkleinerung homogener nichtmetallischer Festkörper
DE19902010C2 (de) * 1999-01-21 2001-02-08 Karlsruhe Forschzent Verfahren zur Aufbereitung von Asche aus Müllverbrennungsanlagen und von mineralischen Rückständen durch Entsalzung und künstlichen Alterung mittels elektrodynamischer Unter-Wasser-Prozesse und Anlage zur Durchführung des Verfahrens
DE10346055B8 (de) * 2003-10-04 2005-04-14 Forschungszentrum Karlsruhe Gmbh Aufbau einer elektrodynamischen Fraktionieranlage
CA2452038C (en) * 2003-12-04 2012-04-03 Bruce Mead Electrical grounding device
US7230179B1 (en) * 2004-12-22 2007-06-12 Scott Martin Ertl Stray voltage suppression device

Also Published As

Publication number Publication date
CA2645268C (en) 2013-12-31
US8071876B2 (en) 2011-12-06
DK2015870T3 (da) 2010-05-10
DE502006005813D1 (de) 2010-02-11
EP2015870A1 (de) 2009-01-21
JP4914490B2 (ja) 2012-04-11
ES2337924T3 (es) 2010-04-30
AU2006341523B2 (en) 2011-03-10
JP2009531165A (ja) 2009-09-03
CA2645268A1 (en) 2007-10-11
US20090236142A1 (en) 2009-09-24
WO2007112599A1 (de) 2007-10-11
AU2006341523A1 (en) 2007-10-11
ATE453455T1 (de) 2010-01-15

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