EP1585597A1 - Verfahren zur rechnergestützten prozessführung einer fragmentieranlage - Google Patents
Verfahren zur rechnergestützten prozessführung einer fragmentieranlageInfo
- Publication number
- EP1585597A1 EP1585597A1 EP04702295A EP04702295A EP1585597A1 EP 1585597 A1 EP1585597 A1 EP 1585597A1 EP 04702295 A EP04702295 A EP 04702295A EP 04702295 A EP04702295 A EP 04702295A EP 1585597 A1 EP1585597 A1 EP 1585597A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- discharge
- fragmentation
- ignition delay
- delay time
- electrode
- 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
-
- 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. ultrasonic waves or 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. ultrasonic waves or irradiation, for disintegrating
- B02C2019/183—Crushing by discharge of high electrical energy
Definitions
- the fragmentation system consists of a capacitive energy store that is discharged between two electrodes via a spark gap on a load of fragmentation material immersed in a process liquid.
- One electrode is at a reference potential, usually ground potential, and the other at the potential of the spark gap, i.e. of the capacitive energy store when the spark gap has ignited.
- the electrode gap is completely in the process liquid.
- the process liquid is mostly water, but can also be alcohol or oil or a supercooled liquid gas such as nitrogen for special fragmentation processes.
- manipulated variables are the electrode spacing and the degree of material filling in the process liquid in the space between the electrodes.
- the controlled variables are: the discharge resistance R E and the ignition delay time T D. If the time course of the discharge current i (t) and the charging voltage U L of the pulse generator is known, a fragmentation process is regulated with the aid of R E and T D.
- the pulse generator is here, for example, a Marx generator known from high-performance electrical pulse technology.
- the resistance of a discharge in the fragmented material is comparatively high and, depending on the material, lies in the range from 1.0 to 4.0 ⁇ . If there is a mixture of water and fragments in the interelectrode space, the discharge resistance lies between the extreme values mentioned above. There is therefore a discharge resistance range in which a fragmentation operation is usable or optimal.
- the ignition delay time T D of a discharge in the water, without tiergut Fragmen ⁇ is large.
- the values start at around 1 ⁇ s.
- the ignition delay time of a discharge in the fragmented material is short, a guide value is 200 ns.
- the ignition delay time is between the extreme values mentioned above. There is therefore also a time range of ignition delay from which the ignition delay time should be.
- Figure 1 shows the discharge resistance ignition delay diagram
- Figure 2 shows the typical time course of the discharge current i (t)
- Figure 3 shows the fragmentation system schematically.
- the state of the fragmentation system is expressed by the discharge resistance R E and the ignition delay time T D , so these two variables have to be determined, namely with each discharge or when no major deviation is to be expected from discharge to discharge, at least after a predetermined number of successive discharges. Since a computer is included to carry out the method, determination of discharge to discharge is not a problem.
- the time course of the current i (t) through the electrode gap is measured during the discharge (see FIG. 2), specifically from the start of the spark gap breakdown on the Marx generator.
- the first oscillation maximum of the damped current curve at time ti mex is the beginning of a damped cosine oscillation of the form
- damping constant ß results from the circuit analysis using conventional mathematical means
- R E represents the discharge resistance
- the circular frequency of the damped vibration is also known
- the ignition delay time TD is determined from the current profile over time.
- the damped oscillation sets in when a discharge channel has fully formed between the two electrodes (see FIG. 2).
- the two control variables R E and T D that characterize the condition of the fragmentation system are now available.
- the current actual position can be determined with FIG. 1 and control signals for changing the manipulated variables, such as electrode spacing and / or material filling, can then be output therefrom.
- the setpoint position of the two controlled variables R E and T D is above the predetermined minimum resistance R Em in the “fragmentation mode” field in FIG. 1.
- Discharge resistance R E introduced " discharge energy ⁇ E F ' - R E J i 2 [f) dt, der
- Ratio ⁇ - E L F - and the control signal derived from it to
- the electrode spacing By changing the electrode spacing and taking into account the two controlled variables R E and T D , a maximum for the efficiency ⁇ can be detected in the course of successive discharges if the maximum has not yet been reached. If the interelectrode space is well loaded with fragmentation material, the f means that the manipulated variable "electrode spacing" is reached up to ⁇ ma ⁇ .
- FIG. 2 The typical course of the discharge current i (t) in the case of electrodynamic fragmentation in the interelectrode space is shown in FIG. 2 and will be briefly explained as a whole: during the pre-discharge phase in the time interval 0 ⁇ T D , a leakage current flows in the process liquid, mostly water, but also others Liquids, such as oil, alcohol, or liquid nitrogen, to name just a few. In this time interval, the discharge channel has not yet bridged the electrode distance by means of a discharge channel which is designed to be fragmentation-effective. From the time T D exists
- the fragmentation system is operated, for example, via a Marx generator.
- the Marx generator consists of the capacitive energy store C s , which acts during discharge with a small but inevitable inductance L G (generator inductance) and an equally inevitable ohmic resistance R G (generator resistance).
- L G generator inductance
- R G generator resistance
- the two non-touching full points symbolize the spark gap.
Landscapes
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Feedback Control In General (AREA)
- Generation Of Surge Voltage And Current (AREA)
- Electrotherapy Devices (AREA)
- Paper (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10302867A DE10302867B3 (de) | 2003-01-25 | 2003-01-25 | Verfahren zur rechnergestützten Prozessführung einer Fragmentieranlage |
| DE10302867 | 2003-01-25 | ||
| PCT/EP2004/000229 WO2004067180A1 (de) | 2003-01-25 | 2004-01-15 | Verfahren zur rechnergestützten prozessführung einer fragmentieranlage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1585597A1 true EP1585597A1 (de) | 2005-10-19 |
| EP1585597B1 EP1585597B1 (de) | 2006-05-10 |
Family
ID=31984475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04702295A Expired - Lifetime EP1585597B1 (de) | 2003-01-25 | 2004-01-15 | Verfahren zur rechnergestützten prozessführung einer fragmentieranlage |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7140564B2 (de) |
| EP (1) | EP1585597B1 (de) |
| CN (1) | CN100376328C (de) |
| AT (1) | ATE325659T1 (de) |
| CA (1) | CA2513238C (de) |
| DE (2) | DE10302867B3 (de) |
| DK (1) | DK1585597T3 (de) |
| WO (1) | WO2004067180A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2568747C1 (ru) | 2011-10-10 | 2015-11-20 | Зельфраг Аг | Способ дробления и/или снижения прочности материала с использованием высоковольтных разрядов |
| CA2928107A1 (en) * | 2013-10-25 | 2015-04-30 | Selfrag Ag | Method for fragmenting and/or pre-weakening material by means of high-voltage discharges |
| EP3060346B1 (de) * | 2013-10-25 | 2017-11-01 | Selfrag AG | Verfahren zum brechen und/oder schwächen eines materials mittels hochspannungsentladungen |
| 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 |
| AU2016411989B2 (en) * | 2016-06-15 | 2022-10-06 | Selfrag Ag | Method of treating a solid material by means of high voltage discharges |
| CN108723550B (zh) * | 2018-05-28 | 2020-04-14 | 西南交通大学 | 前馈补偿的gta填丝增材制造成形高度反馈控制方法 |
| RU2727915C1 (ru) * | 2019-11-22 | 2020-07-24 | Иван Александрович Шорсткий | Способ подготовки растительного материала к сушке и устройство для его осуществления |
| KR200496643Y1 (ko) | 2022-01-18 | 2023-03-22 | 임인덕 | 건축용 내장재 패널 체결유닛 |
| CN114918031B (zh) * | 2022-05-31 | 2023-03-21 | 东北大学 | 高压辊磨中设备参数控制方法及系统 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1350600A (en) * | 1970-12-30 | 1974-04-18 | Atomic Energy Authority Uk | Electro-hydraulic crushing apparatus |
| CN2031715U (zh) * | 1988-04-21 | 1989-02-01 | 顾勇 | 自动研磨机 |
| 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 |
| JPH10180133A (ja) * | 1996-12-25 | 1998-07-07 | Kobe Steel Ltd | 高電圧パルス破砕装置 |
| DE10014393A1 (de) * | 1999-12-23 | 2001-06-28 | Siemens Ag | Verfahren und Vorrichtung zur Defragmentierung von Partikeln |
-
2003
- 2003-01-25 DE DE10302867A patent/DE10302867B3/de not_active Expired - Fee Related
-
2004
- 2004-01-15 CA CA2513238A patent/CA2513238C/en not_active Expired - Fee Related
- 2004-01-15 CN CNB200480002635XA patent/CN100376328C/zh not_active Expired - Fee Related
- 2004-01-15 EP EP04702295A patent/EP1585597B1/de not_active Expired - Lifetime
- 2004-01-15 AT AT04702295T patent/ATE325659T1/de active
- 2004-01-15 DK DK04702295T patent/DK1585597T3/da active
- 2004-01-15 DE DE502004000543T patent/DE502004000543D1/de not_active Expired - Lifetime
- 2004-01-15 WO PCT/EP2004/000229 patent/WO2004067180A1/de not_active Ceased
-
2005
- 2005-07-23 US US11/187,159 patent/US7140564B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004067180A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100376328C (zh) | 2008-03-26 |
| DK1585597T3 (da) | 2006-06-12 |
| CA2513238A1 (en) | 2004-08-12 |
| DE10302867B3 (de) | 2004-04-08 |
| DE502004000543D1 (de) | 2006-06-14 |
| ATE325659T1 (de) | 2006-06-15 |
| CN1741855A (zh) | 2006-03-01 |
| EP1585597B1 (de) | 2006-05-10 |
| WO2004067180A1 (de) | 2004-08-12 |
| CA2513238C (en) | 2012-03-06 |
| US7140564B2 (en) | 2006-11-28 |
| US20050252886A1 (en) | 2005-11-17 |
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