IE35884B1 - Improvements in or relating to electrohydraulic crushing apparatus - Google Patents

Improvements in or relating to electrohydraulic crushing apparatus

Info

Publication number
IE35884B1
IE35884B1 IE1563/71A IE156371A IE35884B1 IE 35884 B1 IE35884 B1 IE 35884B1 IE 1563/71 A IE1563/71 A IE 1563/71A IE 156371 A IE156371 A IE 156371A IE 35884 B1 IE35884 B1 IE 35884B1
Authority
IE
Ireland
Prior art keywords
range
gap
cycle
terminates
transformer
Prior art date
Application number
IE1563/71A
Other versions
IE35884L (en
Original Assignee
Atomic Energy Authority Uk
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 Atomic Energy Authority Uk filed Critical Atomic Energy Authority Uk
Publication of IE35884L publication Critical patent/IE35884L/en
Publication of IE35884B1 publication Critical patent/IE35884B1/en

Links

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

Abstract

One form of electrohydraulic crushing apparatus comprises a liquid-immersed spark-gap across which is connected a first capacitor pulse-charged by repetitively discharging a second capacitor through the primary winding of a step-up pulse-transformer, the two capacitors being matched in value as reflected by the transformer ratio. In order to maintain the breakdown voltage close to peak value despite erosion of the gap electrodes, the present invention checks that each first half-cycle of current in the transformer primary winding terminates within a predetermined time-range after the start of the half-cycle. If it terminates outside this time-range, electromechanical means are controlled to adjust the electrode gap-width so that the half-cycle terminates within this range. Because of statistical variations in the breakdown voltage, it is arranged that a substantial number of half-cycles must terminate outside the predetermined time-range before the gap-width is adjusted. [US3749958A]
IE1563/71A 1970-12-30 1971-12-09 Improvements in or relating to electrohydraulic crushing apparatus IE35884B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6188470 1970-12-30

Publications (2)

Publication Number Publication Date
IE35884L IE35884L (en) 1972-06-30
IE35884B1 true IE35884B1 (en) 1976-06-23

Family

ID=10487594

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1563/71A IE35884B1 (en) 1970-12-30 1971-12-09 Improvements in or relating to electrohydraulic crushing apparatus

Country Status (5)

Country Link
US (1) US3749958A (en)
GB (1) GB1350600A (en)
IE (1) IE35884B1 (en)
SE (1) SE369041B (en)
ZA (1) ZA718297B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102959845A (en) * 2010-05-10 2013-03-06 恩菲斯能源公司 Lossless commutation during operation of power converter

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120579B (en) * 1982-05-21 1985-07-10 De Beers Ind Diamond Method and apparatus for crushing materials such as minerals
RU2081259C1 (en) * 1995-02-22 1997-06-10 Научно-исследовательский институт высоких напряжений при Томском политехническом университете Method for making pieces of substandard reinforced concrete
DE10302867B3 (en) * 2003-01-25 2004-04-08 Forschungszentrum Karlsruhe Gmbh Computer-assisted process guidance method for arc discharge fragmentation plant, using comparison of electrical operating parameters with required values
DE10346650A1 (en) * 2003-10-08 2005-05-19 Forschungszentrum Karlsruhe Gmbh Process reactor and operating method for electrodynamic fragmentation
RU2674075C1 (en) * 2018-01-26 2018-12-04 Общество с ограниченной ответственностью "Проектинтертехника" Electro-hydrodynamical grinding chamber

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2809319A (en) * 1955-10-31 1957-10-08 British Thomson Houston Co Ltd Electric arc furnaces
US3200285A (en) * 1961-08-31 1965-08-10 Strong Electric Corp Motor control
US3209060A (en) * 1963-06-12 1965-09-28 Westinghouse Electric Corp Electrical apparatus
US3234429A (en) * 1963-11-13 1966-02-08 Gen Electric Electrical circuit for electrohydraulic systems
BE659375A (en) * 1964-02-06

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102959845A (en) * 2010-05-10 2013-03-06 恩菲斯能源公司 Lossless commutation during operation of power converter
CN102959845B (en) * 2010-05-10 2015-08-26 恩菲斯能源公司 The method of operation DC-DC converter

Also Published As

Publication number Publication date
ZA718297B (en) 1972-09-27
US3749958A (en) 1973-07-31
SE369041B (en) 1974-08-05
IE35884L (en) 1972-06-30
GB1350600A (en) 1974-04-18

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