EP1488187A1 - Detonator with improved spatial location of its effects and efficient setting of initiation power - Google Patents
Detonator with improved spatial location of its effects and efficient setting of initiation powerInfo
- Publication number
- EP1488187A1 EP1488187A1 EP02758051A EP02758051A EP1488187A1 EP 1488187 A1 EP1488187 A1 EP 1488187A1 EP 02758051 A EP02758051 A EP 02758051A EP 02758051 A EP02758051 A EP 02758051A EP 1488187 A1 EP1488187 A1 EP 1488187A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- detonator
- internal casing
- primary
- casing
- explosive
- 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- Withdrawn
Links
- 230000000694 effects Effects 0.000 title claims abstract description 8
- 230000000977 initiatory effect Effects 0.000 title claims description 16
- 239000002360 explosive Substances 0.000 claims abstract description 34
- 239000007769 metal material Substances 0.000 claims description 2
- 229910052755 nonmetal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000037452 priming Effects 0.000 description 4
- 238000005474 detonation Methods 0.000 description 2
- TZRXHJWUDPFEEY-UHFFFAOYSA-N Pentaerythritol Tetranitrate Chemical compound [O-][N+](=O)OCC(CO[N+]([O-])=O)(CO[N+]([O-])=O)CO[N+]([O-])=O TZRXHJWUDPFEEY-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001540 azides Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000009290 primary effect Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/10—Initiators therefor
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C5/00—Fuses, e.g. fuse cords
- C06C5/06—Fuse igniting means; Fuse connectors
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C7/00—Non-electric detonators; Blasting caps; Primers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/10—Initiators therefor
- F42B3/16—Pyrotechnic delay initiators
Definitions
- the invention concerns industrial detonators, both electric and nonelectric ones. This involves electrical detonators, which in their electrical design after the initiation by electric current or in their non-electric design after being initiated by a pulse from detonating tubes, burning fuses or detonating cords, generate by explosive conversion of their charges into detonating and impulse wave that consequently, along with fragments of explosive charge coat of the relevant industrial detonator, influence initiatively to other explosive objects forming detonating networks.
- 5182417 has its secondary explosive charge placed under its primary one, directly in the metal cup - here concretely in an aluminium casing.
- a similar arrangement is also used in detonator types according to RU Patents No. 2066829, No. 2089828, No. 2120101 , No. 2148239, No. 2148240, No. 2149341 and No. 2156945, or according to EP Patent Application No. 0679858.
- Certain specific directing of initiation pulses is achieved in the detonator type according to US Pat. No.
- the cup in its section-through arrangement, is designed in a combined surface consisting of grooves and crests but with its explosive charge placed again directly in the cup so that, beside an improved control of space-orientated effects, no progress in the control of detonator initiation power is achieved here.
- the detonator contains, placed in a line, a delay-action pyrotechnic, primary and secondary explosive charges, and where the principle consists in that both primary and secondary explosive charges are placed in the detonator cup in the first internal casing, which is shaped, at least along its part containing the secondary explosive charge, a prismatic shape.
- the cavity in the first internal casing may gradually widen towards the delay-action pyrotechnic. The delay-action pyrotechnic may be then, to further advantage, placed in a second internal casing.
- This second internal casing may be advantageously shaped into a ring tube.
- the first internal casing may have its cavity shaped to circular, star, or cross-like sections-through.
- First internal casing perimeter walls may have advantageously the same thickness as the casing bottom thickness.
- the first internal casing may be manufacture advantageously from non-metal materials.
- the first internals casing contains advantageously the explosive charge, consisting of primary and secondary explosives; the charge is loosely poured in this casing.
- the first internal casing may contain the explosive charge, consisting of primary and secondary explosives, compacted to densities from 0.5 to 3.0 g/cm 3 . This way the very detonator, providing reliable detonation and impact power for initiation acting to other explosive subjects forming blast distribution network and, at the same time, enabling an easy setting of initiation power so as not to damage other network neighbouring elements, can be accomplished.
- the detonator prepared according to this invention is formed in the jacket
- the first internal casing 2 containing the explosive (secondary) charge 3 is loaded, and furthermore, where in its funnelling top part the jacket contains the primary explosive charge 4 is located. Above this assembly of first internal casing 2, the second internal casing 5 is loaded; this casing is filled with delaying pyrotechnic 6.
- the first internal casing 2 is shaped as a cylinder, the bottom of which is thinner than the perimeter walls.
- the perimeter walls of the first internal casing 2 are shaped to form a star-like section-through cavity inside.
- the first internal casing 2 is shaped to form a cross-like section-through cavity inside.
- both second and third typical designs have their thinnest spots at the perimeter walls of the first internal casing 2, in such thicknesses as that of its bottom.
- plastics are used in this case.
- the second internal casing 5 is made of metal.
- the explosive charges they consist here of secondary explosive 3, represented by pentaerythrite tetranitrate and primary explosive 4, represented by plumbous azide and, in the above typical designs, the explosive charge is pressed in the first internal casing 2.
- the second internal casing 5, into which the delayed-action pyrotechnic 6 is bulk placed, has in all the typical designs a cylindrical section-through.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Air Bags (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CZ20012859A CZ292545B6 (cs) | 2001-08-06 | 2001-08-06 | Rozbuška se zlepšeným prostorovým a výkonovým nastavením iniciační mohutnosti a brizance |
| CZ20012859 | 2001-08-06 | ||
| PCT/CZ2002/000047 WO2003014652A1 (en) | 2001-08-06 | 2002-08-05 | Detonator with improved spacial location of its effects and efficient setting of initiation power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1488187A1 true EP1488187A1 (en) | 2004-12-22 |
Family
ID=5473510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02758051A Withdrawn EP1488187A1 (en) | 2001-08-06 | 2002-08-05 | Detonator with improved spatial location of its effects and efficient setting of initiation power |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1488187A1 (cs) |
| CZ (1) | CZ292545B6 (cs) |
| WO (1) | WO2003014652A1 (cs) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE373857A (cs) * | 1929-09-30 | |||
| US3434426A (en) * | 1956-11-30 | 1969-03-25 | Jay W De Dapper | Combined ignitor and propellent grain |
| NO905331L (no) | 1990-01-30 | 1991-07-31 | Ireco Inc | Forsinkelsesdetonator. |
| CA2038765C (en) | 1990-11-05 | 1996-03-26 | Ernest L. Gladden | Cushion element for detonators and the like; apparatus and method of assembly |
| DE4414411A1 (de) | 1994-04-26 | 1995-11-02 | Dynamit Nobel Ag | Zünder im Isolierbehälter |
| ZA958348B (en) * | 1994-10-21 | 1996-07-12 | Ensign Bickford Co | Universal isolation member and non-electric detonator cap including the same |
| RU2120101C1 (ru) | 1994-12-13 | 1998-10-10 | Российский Федеральный Ядерный Центр - Всероссийский Научно-Исследовательский Институт Экспериментальной Физики | Детонирующее устройство на основе бризантного взрывчатого вещества |
| RU2089828C1 (ru) | 1995-01-30 | 1997-09-10 | Российский федеральный ядерный центр - Всесоюзный научно-исследовательский институт экспериментальной физики | Детонирующее устройство на основе бризантного взрывчатого вещества |
| CZ286402B6 (en) | 1995-10-27 | 2000-04-12 | Austin Detonator Sro | Delaying element of non-electric igniting detonator |
| US6062141A (en) | 1998-11-09 | 2000-05-16 | The United States Of America As Represented By The Secretary Of The Army | Omni-directional detonator |
-
2001
- 2001-08-06 CZ CZ20012859A patent/CZ292545B6/cs not_active IP Right Cessation
-
2002
- 2002-08-05 EP EP02758051A patent/EP1488187A1/en not_active Withdrawn
- 2002-08-05 WO PCT/CZ2002/000047 patent/WO2003014652A1/en not_active Application Discontinuation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03014652A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CZ292545B6 (cs) | 2003-10-15 |
| WO2003014652A1 (en) | 2003-02-20 |
| CZ20012859A3 (cs) | 2003-03-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20040630 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
| AX | Request for extension of the european patent |
Extension state: RO SI |
|
| R17P | Request for examination filed (corrected) |
Effective date: 20041001 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20060228 |
|
| R18D | Application deemed to be withdrawn (corrected) |
Effective date: 20060301 |