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WO1998007520A1 - Procede de cassure grace au choc d'une decharge electrique et appareil s'y rapportant - Google Patents

Procede de cassure grace au choc d'une decharge electrique et appareil s'y rapportant Download PDF

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Publication number
WO1998007520A1
WO1998007520A1 PCT/JP1997/002866 JP9702866W WO9807520A1 WO 1998007520 A1 WO1998007520 A1 WO 1998007520A1 JP 9702866 W JP9702866 W JP 9702866W WO 9807520 A1 WO9807520 A1 WO 9807520A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage pulse
positive
negative electrodes
discharge
pulse generator
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.)
Ceased
Application number
PCT/JP1997/002866
Other languages
English (en)
Japanese (ja)
Inventor
Koichiro Itow
Ryuichi Shimada
Hikosaburo Hiraki
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.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
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 Komatsu Ltd filed Critical Komatsu Ltd
Publication of WO1998007520A1 publication Critical patent/WO1998007520A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
    • B02C2201/02—Codes relating to disintegrating devices adapted for specific materials for reinforced concrete

Definitions

  • Bubbles not only extend the discharge distance, but also collapse due to cavitation due to the discharge shock wave, and the water hammer pressure generated during this collapse causes a synergistic effect that is emphasized by the discharge shock wave.
  • the discharge shock wave is absorbed.
  • FIG. Figure 7 is a logarithmic graph showing the relationship G1 between the bubble radius (horizontal axis [mm]) obtained from experiments and simulations and the pressure of bubble collapse water in water (horizontal axis [MPs]).
  • the bubble collapse water hammer pressure is a pressure generated in water when bubbles collapse by cavitation.
  • FIG. 6 is a circuit diagram of a fourth example according to the present invention.
  • plasma is generated on the positive and negative electrodes 3a and 3b during discharging, in addition to bubbles.
  • This plasma leaves ions and radicals as residues. If these ions and radicals can be used, the discharge distance can be further extended. However, as described above with reference to FIG. 8, the usable existence period of these ions and radicals is about 50 msec.
  • the high voltage pulse generator 1 applies high voltage pulses to the positive and negative electrodes 3a and 3b at a cycle of 20 Hz or more, the discharge distance can be reduced using ions and radicals. It can be extended further.
  • the capacitor C When a high-voltage pulse is applied from the high-voltage pulse generator 1 to the lead wire 14a with a negative potential and the lead wire 14b with a positive potential, the capacitor C is connected to the primary side L1. And gradually charged. Due to the current change at this time, a trigger voltage is generated on the secondary side L2, and a pre-discharge occurs between the trigger voltage electrode 3c and the negative electrode 3b. The pre-discharge induces a main discharge between the positive and negative electrodes 3a and 3b. Note that the trigger voltage occurs only when the capacitor C is charged. That is, the electrodes of the first, second, and third cases are of two-electrode type.

Landscapes

  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

Cette invention concerne un procédé de génération d'ondes de choc à partir d'une décharge électrique, ainsi qu'un appareil conçu d'après ce procédé et permettant de briser des rochers de grande taille et du béton en peu de temps. Ce procédé de cassure par le choc d'une décharge électrique fait appel à des électrodes positive et négative (3a, 3b) qui vont tout d'abord s'approcher de la partie devant être brisée. La partie à briser est entourée par une atmosphère liquide ou un objet (4) brisé qui se présente désormais sous forme d'atmosphère liquide. On envoie ensuite une impulsion à tension élevée entre les électrodes positive et négative (3a, 3b), ceci de manière à générer une décharge électrique entre ces dernières, et à ce que la partie soit brisée par les ondes de choc qui ont été générées par ladite décharge électrique. D'après ce procédé, une atmosphère comportant des bulles est formée dans le liquide entre les électrodes positive et négative (3a, 3b) avant que la décharge électrique ne soit envoyée.
PCT/JP1997/002866 1996-08-21 1997-08-19 Procede de cassure grace au choc d'une decharge electrique et appareil s'y rapportant Ceased WO1998007520A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8237349A JPH1057832A (ja) 1996-08-21 1996-08-21 放電衝撃破壊方法及び放電衝撃破壊装置
JP8/237349 1996-08-21

Publications (1)

Publication Number Publication Date
WO1998007520A1 true WO1998007520A1 (fr) 1998-02-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1997/002866 Ceased WO1998007520A1 (fr) 1996-08-21 1997-08-19 Procede de cassure grace au choc d'une decharge electrique et appareil s'y rapportant

Country Status (3)

Country Link
JP (1) JPH1057832A (fr)
KR (1) KR19980018598A (fr)
WO (1) WO1998007520A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2139140C1 (ru) * 1996-04-09 1999-10-10 Сибирский научно-исследовательский институт механизации и электрификации сельского хозяйства Диспергатор
US6951637B2 (en) 2000-11-30 2005-10-04 Solarworld Aktiengesellschaft Method and device for producing globular grains of high-puroty silicon having a diameter of between 50 μm and 300 μm and use of the same
GB2421203A (en) * 2004-10-20 2006-06-21 Uri Andres Aggregate breakdown by high voltage electrical pulses
WO2009026647A1 (fr) * 2007-08-30 2009-03-05 The University Of Queensland Procédé et appareil pour briser des matières solides
CN108273631A (zh) * 2018-02-12 2018-07-13 中国地质大学（北京） 一种使用泡沫溶液作为电介质的等离子碎岩方法及系统
CN112180432A (zh) * 2020-09-01 2021-01-05 中国科学院深圳先进技术研究院 一种基于电晕放电的高效率电火花震源系统及设置方法
CN115930690A (zh) * 2022-11-22 2023-04-07 山东大学 一种基于气泡引导水下放电的聚束冲击波碎岩装置及方法
CN117898794A (zh) * 2024-02-07 2024-04-19 深圳英美达医疗技术有限公司 冲击波系统及冲击波控制方法

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020076521A (ko) * 2001-03-29 2002-10-11 주식회사 다원시스 미세분말 제조장치 및 방법
KR20030063584A (ko) * 2002-01-23 2003-07-31 서병선 수중 전기 충격장치의 충격파 발생장치
JP5083825B2 (ja) * 2008-06-27 2012-11-28 独立行政法人産業技術総合研究所 液体中プラズマ放電装置
RU2477370C1 (ru) * 2011-09-21 2013-03-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный исследовательский Томский политехнический университет" Электроимпульсный погружной бур
WO2013053066A1 (fr) * 2011-10-10 2013-04-18 Selfrag Ag Procédé destiné à fragmenter et/ou à pré-affaiblir un matériau au moyen de décharges à haute tension
US20160256874A1 (en) * 2013-10-25 2016-09-08 Selfrag Ag Method of fragmenting and/or weakening a material by means of high voltage discharges
JP6339994B2 (ja) * 2015-12-08 2018-06-06 パナソニック株式会社 放電破砕装置及び放電破砕方法
JP6404808B2 (ja) * 2015-12-08 2018-10-17 パナソニック株式会社 物品の分解方法
RU2660597C1 (ru) * 2017-04-27 2018-07-06 Федеральное государственное бюджетное учреждение науки Институт сильноточной электроники Сибирского отделения Российской академии наук (ИСЭ СО РАН) Высоковольтный импульсный генератор для электроразрядных технологий
JP6857363B2 (ja) * 2018-11-02 2021-04-14 学校法人早稲田大学 電気パルス解体方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4626574B1 (fr) * 1968-11-27 1971-08-02 Shikigaishiya Inoue
JPH09192526A (ja) * 1996-01-12 1997-07-29 Kobe Steel Ltd 放電破砕装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4626574B1 (fr) * 1968-11-27 1971-08-02 Shikigaishiya Inoue
JPH09192526A (ja) * 1996-01-12 1997-07-29 Kobe Steel Ltd 放電破砕装置

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2139140C1 (ru) * 1996-04-09 1999-10-10 Сибирский научно-исследовательский институт механизации и электрификации сельского хозяйства Диспергатор
US6951637B2 (en) 2000-11-30 2005-10-04 Solarworld Aktiengesellschaft Method and device for producing globular grains of high-puroty silicon having a diameter of between 50 μm and 300 μm and use of the same
GB2421203A (en) * 2004-10-20 2006-06-21 Uri Andres Aggregate breakdown by high voltage electrical pulses
GB2421203B (en) * 2004-10-20 2008-04-02 Uri Andres Liberation of minerals by detachment from the rock matrices
WO2009026647A1 (fr) * 2007-08-30 2009-03-05 The University Of Queensland Procédé et appareil pour briser des matières solides
CN108273631A (zh) * 2018-02-12 2018-07-13 中国地质大学（北京） 一种使用泡沫溶液作为电介质的等离子碎岩方法及系统
CN112180432A (zh) * 2020-09-01 2021-01-05 中国科学院深圳先进技术研究院 一种基于电晕放电的高效率电火花震源系统及设置方法
CN112180432B (zh) * 2020-09-01 2023-10-20 中国科学院深圳先进技术研究院 一种基于电晕放电的高效率电火花震源系统及设置方法
CN115930690A (zh) * 2022-11-22 2023-04-07 山东大学 一种基于气泡引导水下放电的聚束冲击波碎岩装置及方法
CN117898794A (zh) * 2024-02-07 2024-04-19 深圳英美达医疗技术有限公司 冲击波系统及冲击波控制方法

Also Published As

Publication number Publication date
JPH1057832A (ja) 1998-03-03
KR19980018598A (ko) 1998-06-05

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