EP2818823A1 - Sprengkapsel - Google Patents

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Publication number
EP2818823A1
EP2818823A1 EP12869339.7A EP12869339A EP2818823A1 EP 2818823 A1 EP2818823 A1 EP 2818823A1 EP 12869339 A EP12869339 A EP 12869339A EP 2818823 A1 EP2818823 A1 EP 2818823A1
Authority
EP
European Patent Office
Prior art keywords
detonator capsule
cylindrical case
capsule according
cavity
induction coil
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.)
Withdrawn
Application number
EP12869339.7A
Other languages
English (en)
French (fr)
Other versions
EP2818823A4 (de
Inventor
Aleksandr Stepanovich BOGDAN
Vitalii Viktorovich SAYAPIN
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.)
Obshchestvo s Ogranichennoy Otvetstvennostyu <<Pulse Electric>>
Original Assignee
Obshchestvo s Ogranichennoy Otvetstvennostyu <<Pulse Electric>>
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 Obshchestvo s Ogranichennoy Otvetstvennostyu <<Pulse Electric>> filed Critical Obshchestvo s Ogranichennoy Otvetstvennostyu <<Pulse Electric>>
Publication of EP2818823A1 publication Critical patent/EP2818823A1/de
Publication of EP2818823A4 publication Critical patent/EP2818823A4/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C11/00—Electric fuzes
    • F42C11/04—Electric fuzes with current induction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/04—Arrangements for ignition

Definitions

  • This invention relates to means designed for conducting explosions.
  • Triggered surface detonator transmits initiating pulse inside well detonator, which initiates well explosive charge.
  • delay detonators are also used in wells, and the well delay exceeds the delay of surface detonators.
  • Delay accuracy when using pyrotechnical means is low. Usually this value is ⁇ 10%. Very low accuracy of well delay can disrupt the sequence of well explosions. This leads to a necessity of an increase of the consumption of explosives, and to an occurrence of so-called outsized stone fractions, the elimination of which requires additional, heavy expenses.
  • capsules with electronic delay which provides higher accuracy compared to the pyrotechnic delay.
  • capsules with electronic delay available on the market - EDE3, I-kon, Hot/QuickShot, Deltadet - have many design flaws. Firstly, all of them are electrical - in these devices initiating signal goes through wires, which requires highly qualified personnel. Furthermore, a special controller, which is programmed directly at the explosion area, is required. Therefore training of the personnel and changing traditional explosion circuits are needed. Secondly, they cost higher exceeding several times the cost of capsules with pyrotechnical delay. For these reasons, implementation of capsules with electronic delay is slow. Fast implementation of this capsule depends on its similarity to traditional ones both in terms of network installation and handling, and in terms of designing the explosions. So, currently there is a need for detonator capsule with electronic delay and non-electric initiating system.
  • a detonating device which comprises: a casing, containing a charge of compacted blasting substance, a charge of blasting substance of bulk density, a charge of initiating substance, ignition charge, which is made of a metal spiral connected to electronic module, which comprises a detecting module, connected to two-wire line, shunted by first and second diode from the central device, first storage capacitance is connected to the first output of detection unit and to the first input of microprocessor with crystal oscillator, which is connected also through a second input by the connection of the first and second diodes to the two-wire line, second storage capacitance is connected to the second output of the detection unit, connected to consequently connected ignition unit and first switch, the connection point of which is connected to third input of microprocessor through divider, a second switch is additionally attached to the second capacitance, control inputs of the two switches are connected to first and second outputs of the microprocessor, and the microprocessor has personal identification number programmed during the manufacturing (Patent of Russia No 2147365 M
  • a detonator capsule with electronic delay comprising a casing, containing ignition charge, electronic unit for delay of explosion, primary explosive and secondary explosive, initiating unit and sensor, that are placed in front of the electronic delay unit, herewith the sensor is made with ability to convert pulse from initiating unit and to transmit this pulse to electronic delay unit, which is programmed for a certain time delay, the sensor is made with the ability to switch on the electronic delay unit by photo-sensor and thermo-sensor (Patent RF No2349867 MPC F42B3/10). Time delay of this capsule is set in manufacturing which is an undoubted advantage of this device.
  • the detonator capsule's main disadvantage is that it is operable only by using galvanic power suppliers. These power suppliers have limited working temperature range and storage life. Moreover detonator capsule with permanently active power supply is very dangerous during transportation and preparatory works.
  • the invention solves the problem of creating a detonator capsule which has high igniting accuracy, is non-active before putting into operation by initiating pulse, that's why it is safe during storage and transportation and has great, almost non-limited storage life.
  • the detonator capsule comprises a casing, which contains an ignition charge, a primary explosive and a secondary explosive, which are arranged in such a way that the ignition charge ignites the primary explosive, which detonates the secondary explosive, an electronic delay timer of primary explosive and an explosion initiation means, which is connected to said delay means for the ignition of the primary explosive, wherein the explosion initiation means comprises a shock tube, one end of which is fixed in the inlet of said casing, a cylindrical case mounted coaxially to the shock tube and the inlet into the cavity of the case is directed towards the shock tube, and a magnetic armature is mounted in the cavity of said cylindrical case with the ability to move along the axis of said cylindrical case, and said cylindrical case is covered on the outside by an induction coil.
  • the explosion initiation means comprises a shock tube, one end of which is fixed in the inlet of said casing, a cylindrical case mounted coaxially to the shock tube and the inlet into the cavity of the case is directed towards the shock tube, and a magnetic armature is
  • the cavity of cylindrical case may be closed by a membrane, to which a magnetic armature is attached (e.g. glued) in order to eliminate armature movements during transportation, vibration impacts, and hits.
  • a magnetic armature e.g. glued
  • the cavity of cylindrical case may be closed by a fixing washer made of magnetically soft material, the washer also eliminates armature movements during transportation, vibration impacts, and hits.
  • Auxiliary magnet or return spring can be mounted in the cylindrical case.
  • the bottom of the cylindrical case can be solid or may have draining channels.
  • Induction coil resistance is R ⁇ T/ ⁇ C, where T - time needed by the magnetic armature to pass through the inner cavity of the case, which is covered by induction coil from the outside, C - capacitance of storage capacitors.
  • Induction coil inductance is L ⁇ TR/ ⁇ , where T - time needed by the magnetic armature to pass through the inner cavity of the case, which is covered by induction coil from the outside, R - resistance of the induction coil.
  • the means of primary explosive ignition delay is electronic delay timer.
  • Electronic delay timer comprises storage capacitors, at least one of them provides power supply to its elements, and at least the other one provides power supply to ignition charge.
  • Storage capacitors are charged by same or different voltage signs depending on the rectifier circuit.
  • Fig.1 shows detonator capsule with magnetic armature fixed to the fixing membrane
  • Fig.2 shows detonator capsule with magnetic armature fixed to the fixing washer made of magnetically soft material, where: 1 - capsule casing, 2 - shock tube, 3 - cylindrical case, 4 - magnetic armature, 5 - induction coil, 6 - means of delay of the ignition of primary explosive, 7 - ignition charge, 8 - primary explosive, 9 - secondary explosive, 10 - fixing membrane, 11 - fixing washer.
  • the detonator capsule works as follows.
  • Input element of detonator capsule is shock tube 2. It can be for example a plastic tube with external diameter of about 3.5 mm and internal diameter of about 1 mm.
  • a fine explosive substance is sprayed on the inner surface of the tube, for example - 10-20 mg per meter of tube length.
  • the shock wave begins to spread along its axis with a speed of 2000 m/s.
  • the tube can be actuated by detonator capsule, detonating cord or special trigger device.
  • shock wave reaches the end of the tube, it ejects jet of hot gases. The total energy (thermal and kinetic) of this jet is about 1-2 J.
  • the jet of gases from shock tube 2 burst in casing 1, it tears off the magnetic armature from the fixing element (membrane 10 or fixing washer 11) and puts it into motion.
  • the magnetic armature is fixed in such a way that its immobility is provided.
  • it can be fixed on fixing membrane by glue, wherein the fixing membrane is also glued to the cylindrical case's edge.
  • the magnetic armature can be connected magnetically to the fixing washer in order to remain its initial position.
  • Magnetic armature when flying along the axis of the cavity of the cylindrical case 4, induces an EMF in induction coil 5, which covers said cylindrical case 3 from the outside.
  • Induced voltage goes from induction coil's pins to means of delay of the ignition of primary explosive 6.
  • a sample voltage oscillogram on induction coil's pins is shown in Fig. 7 .
  • Fig. 3 shows a detonator capsule with fixation of magnetic armature to fixing washer made of magnetically soft material and containing an auxiliary magnet in the cavity of the cylindrical case 3.
  • the same poles of magnetic armature and auxiliary magnet are oriented towards each other.
  • the auxiliary magnet restores the armature in its initial position.
  • Fig. 4 shows detonator capsule with draining channel 13, which prevents air compression in front of the armature, which increases armature speed and, as a result - induction coil's EMF.
  • Fig. 5 shows detonator capsule with magnetic armature fixed on fixing washer made from magnetically soft material and containing a return spring 14 in the cavity of the case 3.
  • the return spring plays the same role as auxiliary magnet - it returns magnetic armature to its initial position in case of tearing off of the magnetic armature from the washer caused by transportation vibrations of the capsule.
  • the detonator casing In some cases it is advisable to divide the detonator casing into two parts. One part contains the cylindrical case with induction coil and magnetic armature, while the other part contains the electronic timer with ignition charge. The two parts are connected by flexible electrical cable 15 as shown in Fig. 6 .
  • Fig. 8 shows circuit diagram of electronic delay timer which can be used in proposed detonator as means of delay of the ignition of primary explosive, where: 7 - ignition charge, 16 - wires going to induction coil, 17 - electronic switch, 18 - microprocessor, C1 - first storage capacitor, C2 - second storage capacitor, D1 - first rectifying diode, D2 - second rectifying diode.
  • the capacitor C1 is charged with positive voltage, while the capacitor C2 is charged with negative voltage.
  • Fig. 9 shows circuit diagram of electronic delay timer, which can be used in proposed detonator as means of delay of the ignition of primary explosive, where : 7 - ignition charge, 16 - wires going to induction coil, 17 - electronic switch, 18 - microprocessor, C1 - first storage capacitor, C2 - second storage capacitor, D1, D2, D3, D4 - rectifying diodes.
  • the pairs of diodes D1, D2 and D3, D4 form two rectifying bridges. In such rectifying circuit both capacitors C1 and C2 are charged with positive voltage.
  • Fig. 10 shows circuit diagram of electronic delay timer, which can also be used in proposed detonator as means of delay of the ignition of primary explosive, where: 7 - ignition charge, 16 - wires going to induction coil, 17 - electronic switch, 18 - microprocessor, C 1 - first storage capacitor, C2 - second storage capacitor, D1, D2, D3, D4 - rectifying diodes. In such rectifying circuit both capacitors C1 and C2 are charged with positive voltage. This circuit is supplemented by a booster diode D5. Use of the booster diode D5 increases the energy of the ignition charge.
  • the microprocessor 18 switches on and starts countdown of the delay time, which was set up in manufacturing. After the countdown ends, the microprocessor opens the electronic switch 17 and ignites the ignition charge 7. Electrical energy of the capacitors is spent on the work of timer during the countdown of the delay and on the igniting of the ignition charge.
  • the delay time may be from 10 up to 10000 milliseconds. Ignition charge 7 ignites primary explosive 8, the burning of which goes to a detonation in less than 50 microseconds. Primary explosive detonation wave actuates secondary explosive 9. Its explosion occurs and the process ends.
  • the detonator capsule When means of ignition delay is made in the form of electronic delay timer shown in Fig. 9 , the detonator capsule operates in the same manner. The difference is that the storage capacitors are charged by only positive voltage because of usage of rectifying half-bridges D1, D2, D3, and D4. This simplifies the circuit of electronic switch.
  • Fig 10 shows another embodiment of means of ignition delay. It differs from the previous one by presence of a booster diode D5. When electronic switch is triggered, the diode D5 passes the remaining charge of the capacitor C1 into circuit of ignition charge increasing its energy and reliability of operation.
  • detonator capsule's design allows for high triggering accuracy, and this is valid for both explosions with short delay time and explosions with long delay time. Its delay time accuracy does not exceed 10 milliseconds and it is completely ready for use immediately after manufacturing.
  • detonator capsule is non-active during storage, transportation and preparatory explosion works. It comes in a working state only when initiating pulse is applied to it, that's why detonator capsule is safe during transportation and storage, and has almost non-limited storage life.
  • Proposed detonator capsule can be used in mining industry, construction industry, warfare and other spheres of human activity, where it is necessary to conduct blasting operations.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
EP12869339.7A 2012-02-22 2012-02-22 Sprengkapsel Withdrawn EP2818823A4 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RU2012/000124 WO2013125975A1 (ru) 2012-02-22 2012-02-22 Капсюль - детонатор

Publications (2)

Publication Number Publication Date
EP2818823A1 true EP2818823A1 (de) 2014-12-31
EP2818823A4 EP2818823A4 (de) 2015-09-30

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Family Applications (1)

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EP12869339.7A Withdrawn EP2818823A4 (de) 2012-02-22 2012-02-22 Sprengkapsel

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EP (1) EP2818823A4 (de)
WO (1) WO2013125975A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109458887B (zh) * 2018-12-27 2023-10-20 山西宸润隆科技有限责任公司 基于高压等离子点火具聚能起爆的数码安全电雷管

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US384662A (en) * 1888-06-19 Edmund l
US3048085A (en) * 1956-04-23 1962-08-07 Paul J Dickey Flare candle
US3636390A (en) * 1970-01-26 1972-01-18 Barge Inc Explosive pulse generator
DE4032844C1 (en) * 1990-10-16 1991-06-06 Buck Werke Gmbh & Co, 7347 Bad Ueberkingen, De Inductive current generator for shell or mortar - has permanent magnet sliding under gas pressure inside coil
NO934507L (no) * 1992-12-10 1994-06-13 Halliburton Co Detonator for perforeringskanon
US5621184A (en) * 1995-04-10 1997-04-15 The Ensign-Bickford Company Programmable electronic timer circuit
BR9502995A (pt) * 1995-06-23 1997-09-23 Ibq Ind Quimicas Ltda Detonador de retardo eletrônico
JPH1026500A (ja) * 1996-07-08 1998-01-27 Yokogawa Denshi Kiki Kk 信管の発電装置
RU2147365C1 (ru) 1998-06-15 2000-04-10 Новосибирский механический завод "Искра" Детонирующее устройство
US7086334B2 (en) * 2003-07-15 2006-08-08 Special Devices, Inc. Staggered charging of slave devices such as in an electronic blasting system
RU2349867C2 (ru) * 2006-04-20 2009-03-20 Федеральное Государственное Унитарное Предприятие Новосибирский Механический Завод "Искра" Капсюль-детонатор с электронной задержкой
RU2451896C1 (ru) * 2010-11-10 2012-05-27 Открытое акционерное общество "Новосибирский институт программных систем" Капсюль-детонатор
AP2014007641A0 (en) * 2012-02-29 2014-05-31 Detnet South Africa Pty Ltd Electronic detonator

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Publication number Publication date
EP2818823A4 (de) 2015-09-30
WO2013125975A1 (ru) 2013-08-29

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