EP2177866A1 - Verstärkungsvorrichtung für Sprengstoffe und Explosionsvorrichtung dafür - Google Patents

Verstärkungsvorrichtung für Sprengstoffe und Explosionsvorrichtung dafür Download PDF

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Publication number
EP2177866A1
EP2177866A1 EP08425674A EP08425674A EP2177866A1 EP 2177866 A1 EP2177866 A1 EP 2177866A1 EP 08425674 A EP08425674 A EP 08425674A EP 08425674 A EP08425674 A EP 08425674A EP 2177866 A1 EP2177866 A1 EP 2177866A1
Authority
EP
European Patent Office
Prior art keywords
booster
container
booster device
charge
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Withdrawn
Application number
EP08425674A
Other languages
English (en)
French (fr)
Inventor
Romeo Della Bella
Pietro Paolo Santi
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.)
Sei Esplosivi Industriali SpA Soc
Original Assignee
Sei Esplosivi Industriali SpA Soc
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 Sei Esplosivi Industriali SpA Soc filed Critical Sei Esplosivi Industriali SpA Soc
Priority to EP08425674A priority Critical patent/EP2177866A1/de
Publication of EP2177866A1 publication Critical patent/EP2177866A1/de
Withdrawn legal-status Critical Current

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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
    • F42B3/26—Arrangements for mounting initiators; Accessories therefor, e.g. tools

Definitions

  • the present invention relates to a booster device for explosives for use in various sectors and applications, such as for example in the civil and mineral sphere, the performance of road works, the controlled demolition of buildings, underwater works, mineral blasting and quarrying.
  • applications should not be considered exhaustive in that they indicate only some of the possible uses of the booster device which the present invention relates to.
  • booster devices already used in the military sphere, in which the correct triggering of the explosive charge of the explosive device traverses an explosive chain composed of a trigger and a booster charge, has been extended to the civil sphere too.
  • a booster charge is added to provide greater activation energy and cause complete detonation of the explosive charge.
  • booster charges normally produced from regenerated explosives re-utilisable following fusion, such as for example TNT, C/B, pentolite and so on.
  • Regenerated explosives have the advantage of enabling the re-use of explosives otherwise destined for costly destruction, and to the containment of the costs of products made with the same.
  • the problem which the present invention sets out to overcome is to create a booster device which resolves the drawbacks mentioned with reference to the known technique.
  • figure 1 shows a view from above, partially in cross-section, of a booster device according to an embodiment of the present invention
  • figure 2 shows a cross-section view of the booster device in figure 1 ;
  • figure 3 shows a perspective view of a detail of the booster device in figure 1 ;
  • figure 4 shows a cross-section view of the booster device in figure 1 , along the cross-section plane IV-IV of figure 1 , said booster device being equipped with an electric detonator, according to a possible embodiment of the present invention
  • figure 5 shows a cross-section view of the booster device in figure 1 , along the cross-section plane IV-IV of figure 1 , said booster device being equipped with a detonating fuse, according to a possible embodiment of the present invention
  • figure 6 shows a cross-section view of the booster device in figure 1 , along the cross-section plane IV-IV of figure 1 , said booster device being equipped with a "nonel" detonator, according to a possible embodiment of the present invention
  • FIG. 7-9 shows cross-section views of a multiple booster device respectively equipped with an electric detonator, a detonating fuse and a "nonel" detonator according to possible embodiments of the present invention.
  • reference numeral 4 globally denotes an explosive booster device.
  • the booster device 4 comprises a container 8 able to contain a booster charge 12.
  • the booster charge 12 is able to facilitate the triggering of an explosive charge of an associable explosive so as to produce a clean, complete detonation.
  • the booster charge 12 has the function of providing greater activation energy to provoke a complete detonation of the explosive charge.
  • the booster charge 12 is a high potential, explosive substance in powder form.
  • the booster charge 12 comprises cyclotrimethylenetrinitramine in powder form.
  • the booster charge 12 comprises an agent reducing sensitivity to external stimuli, to permit safe use.
  • the booster charge 12 comprises 98.5% in weight of cyclotrimethylenetrinitramine and 1.5% in weight of a sensitivity-reducing agent.
  • the booster device 4 also comprises a closing cover 16 which can be fitted to the container 8 and a triggering device 20 to trigger the booster charge 12.
  • the triggering device 20 may comprise an electric detonator 22, a 'Nonel' type detonator 24 and/or a detonating fuse 26,depending on the specific application and type of explosive used.
  • the container 8, on the part opposite the closing cover 16, comprises a bottom 27.
  • the container 8 comprises an insertion aperture 28 able to permit filling of the same container with the booster charge 12; according to one embodiment the container is a cylindrical body having an X-X extension axis.
  • the container 8 comprises for example a knurl or number of steps 36 able to facilitate mechanical coupling with the associable closing cover 16.
  • the closing cover 16 interlocks with the insertion aperture 28 of the container 8.
  • a lateral rim 40 of the cover 16 and the inner lateral wall 32 of the insertion aperture 28 of the container 8 there is a male-female type coupling.
  • the lateral rim 40 sits firmn against the inner lateral wall 32, preferably fitted with steps 36, so as to ensure firm closure of the said cover.
  • the closing cover 16 is sealed tight to the container 8 so as to prevent the infiltration of liquids inside the container 8.
  • a sealing mechanism able to ensure watertightness.
  • said sealing mechanism comprises a sealing paste and/or O-ring; for example the sealing mechanism is housed in the area defined by two consecutive steps 36 of the container 8.
  • the sealing mechanism 44 comprises a twin-component polyurethane resin.
  • the closing cover 16 previously interlocked to the insertion aperture 28,is joined to a cover plate 48, also insertable in the insertion aperture 28.
  • the sealing mechanism 44 is positioned between the closing cover 16 and the cover plate 48.
  • a polymer ring of the O-ring type axially compressed between the cover 16 and the cover plate 48 may be used as a sealing mechanism, so as to dilate radially against the inner lateral wall 32 and form a seal.
  • Axial direction is taken to mean a direction parallel to the extension axis X-X of the container 8; radial direction is taken to mean a direction perpendicular to the axial direction and incident with it.
  • sealing mechanisms 44 in a liquid, paste or semisolid form are inserted so that, following axial compression between the cover 16 and the plate 48, said sealing mechanism 44 distends radially against the inner lateral wall 32 to then solidify and/or polymerise.
  • the container 8 defines a chamber 52 housing the booster charge 12, and an inner tube 56 which crosses said chamber 52 and which houses at least partially the trigger mechanisms 20,22,24,26.
  • the inner tube preferably passes through the cover 16 through a hole 60 in said cover 16.
  • the chamber 52 assumes a toroidal conformation, co-axial with the extension axis X-X and with the inner tube 56.
  • Said inner tube 56 goes through the hole 60 of the closing cover 16 and comprises an aperture 64 passing through an extension of the inner tube 56.
  • Such aperture permits insertion of the trigger mechanisms inside the container 8.
  • the container 8 comprises at least one seat 68 communicating with the inner tube 56, said seat 68 co-operating with the inner tube 56 to house the trigger mechanisms 20,22,24,26.
  • the booster device comprises two cylindrical seats 68, positioned symmetrically and in diametrically opposed positions in relation to the inner tube 56.
  • the seats 68 and the inner tube 56 are in direct communication with each other at the bottom 27 of the container 8.
  • the seats 68 are fluidly separate from the chamber 52 so as to prevent any contamination of the booster charge 12.
  • the seats comprise means of closure 72, such as for example stoppers, to ensure water tightness and prevent the penetration of fluid into the chamber 52.
  • the bottom 27 of the container 8 is open so as to facilitate the passage of the trigger mechanisms 20,22,24,26 through the inner tube 56 so as to be housed in their respective seats 68.
  • the bottom 27 is counter-shaped in relation to the insertion aperture 28 of the container 8 so that it can be inserted in the insertion aperture 28 of a further, associable booster device 4, enabling piling up in a column of several booster devices 4 ( figures 7-9 ).
  • the booster device according to the present invention makes it possible to overcome the drawbacks presented by the known devices in the art.
  • the detonation pressure is released practically immediately, while with the known booster charges the time passing between detonation of the charge and the maximum rise in detonation pressure, occurs after about 2-4 ⁇ s.
  • the effect of the booster charge is particularly effective in the triggering phase of the explosive charge.
  • the booster device of the present invention can be used in water in that it is possible to prevent infiltration of the same inside the container. Such infiltration of water could lead to the explosive becoming inert or to failure of proper triggering by the detonator.
  • multiple explosive devices can be used which in a simple, modular and economic manner enable the power of the booster charge to be increased in relation to the type and quantity of the explosive charge of the explosive used.
  • the high reactivity and rapidity of the booster charge makes it possible to achieve safe and perfectly controlled explosions even with elevated quantities of explosive charge.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP08425674A 2008-10-20 2008-10-20 Verstärkungsvorrichtung für Sprengstoffe und Explosionsvorrichtung dafür Withdrawn EP2177866A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08425674A EP2177866A1 (de) 2008-10-20 2008-10-20 Verstärkungsvorrichtung für Sprengstoffe und Explosionsvorrichtung dafür

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08425674A EP2177866A1 (de) 2008-10-20 2008-10-20 Verstärkungsvorrichtung für Sprengstoffe und Explosionsvorrichtung dafür

Publications (1)

Publication Number Publication Date
EP2177866A1 true EP2177866A1 (de) 2010-04-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08425674A Withdrawn EP2177866A1 (de) 2008-10-20 2008-10-20 Verstärkungsvorrichtung für Sprengstoffe und Explosionsvorrichtung dafür

Country Status (1)

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EP (1) EP2177866A1 (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013142894A1 (en) * 2012-03-28 2013-10-03 Orica International Pte Ltd Shell for explosive
US20150176371A1 (en) * 2012-01-25 2015-06-25 International Technologies, Llc Booster explosive support device for anchoring an explosive booster in a borehold
WO2016070246A1 (en) * 2014-11-05 2016-05-12 Orica International Pte Ltd Shell
WO2017120691A1 (es) * 2016-01-14 2017-07-20 Enaex Servicios S.A. Envase para explosivos
EP3239648A1 (de) 2016-04-27 2017-11-01 Nitrates&Innovation Zündverstärkungsvorrichtung
EP3392601A1 (de) * 2017-04-18 2018-10-24 Maxamcorp Holding, S.L. Zünderrückhaltesystem für verstärker
US10927627B2 (en) 2019-05-14 2021-02-23 DynaEnergetics Europe GmbH Single use setting tool for actuating a tool in a wellbore
US11204224B2 (en) 2019-05-29 2021-12-21 DynaEnergetics Europe GmbH Reverse burn power charge for a wellbore tool
US11255147B2 (en) 2019-05-14 2022-02-22 DynaEnergetics Europe GmbH Single use setting tool for actuating a tool in a wellbore
US11578549B2 (en) 2019-05-14 2023-02-14 DynaEnergetics Europe GmbH Single use setting tool for actuating a tool in a wellbore
US11753889B1 (en) 2022-07-13 2023-09-12 DynaEnergetics Europe GmbH Gas driven wireline release tool

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2993441A (en) * 1957-05-22 1961-07-25 Trojan Powder Co Container for explosive article
US3183836A (en) * 1963-08-21 1965-05-18 Trojan Powder Co Canister for cast primer
US3747527A (en) * 1971-07-07 1973-07-24 Commercial Solvents Corp Process and product
US4334476A (en) * 1980-07-02 1982-06-15 Mining Services International Corporation Primer cup
US4485741A (en) * 1983-04-13 1984-12-04 Apache Powder Company Booster container with isolated and open cord tunnels

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2993441A (en) * 1957-05-22 1961-07-25 Trojan Powder Co Container for explosive article
US3183836A (en) * 1963-08-21 1965-05-18 Trojan Powder Co Canister for cast primer
US3747527A (en) * 1971-07-07 1973-07-24 Commercial Solvents Corp Process and product
US4334476A (en) * 1980-07-02 1982-06-15 Mining Services International Corporation Primer cup
US4485741A (en) * 1983-04-13 1984-12-04 Apache Powder Company Booster container with isolated and open cord tunnels

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150176371A1 (en) * 2012-01-25 2015-06-25 International Technologies, Llc Booster explosive support device for anchoring an explosive booster in a borehold
US9702226B2 (en) * 2012-01-25 2017-07-11 International Technologies, Llc Booster explosive support device for anchoring an explosive booster in a borehold
AU2017204207B2 (en) * 2012-03-28 2019-07-25 Orica International Pte Ltd Shell for explosive
CN104136879A (zh) * 2012-03-28 2014-11-05 奥里卡国际私人公司 用于炸药的壳体
US9285199B2 (en) 2012-03-28 2016-03-15 Orica International Pte Ltd Shell for explosive
WO2013142894A1 (en) * 2012-03-28 2013-10-03 Orica International Pte Ltd Shell for explosive
CN104136879B (zh) * 2012-03-28 2016-08-24 奥里卡国际私人公司 用于炸药的壳体
WO2016070246A1 (en) * 2014-11-05 2016-05-12 Orica International Pte Ltd Shell
US20190170487A1 (en) * 2016-01-14 2019-06-06 Enaex Servicios S.A. Receptacle for explosives
WO2017120691A1 (es) * 2016-01-14 2017-07-20 Enaex Servicios S.A. Envase para explosivos
EP3239648A1 (de) 2016-04-27 2017-11-01 Nitrates&Innovation Zündverstärkungsvorrichtung
EP3392601A1 (de) * 2017-04-18 2018-10-24 Maxamcorp Holding, S.L. Zünderrückhaltesystem für verstärker
WO2018192900A1 (en) * 2017-04-18 2018-10-25 Maxamcorp Holding, S.L. Detonator retention system for boosters
US11209250B2 (en) 2017-04-18 2021-12-28 Maxamcorp Holding, S.L. Detonator retention system for boosters
US10927627B2 (en) 2019-05-14 2021-02-23 DynaEnergetics Europe GmbH Single use setting tool for actuating a tool in a wellbore
US11255147B2 (en) 2019-05-14 2022-02-22 DynaEnergetics Europe GmbH Single use setting tool for actuating a tool in a wellbore
US11578549B2 (en) 2019-05-14 2023-02-14 DynaEnergetics Europe GmbH Single use setting tool for actuating a tool in a wellbore
US11204224B2 (en) 2019-05-29 2021-12-21 DynaEnergetics Europe GmbH Reverse burn power charge for a wellbore tool
US11753889B1 (en) 2022-07-13 2023-09-12 DynaEnergetics Europe GmbH Gas driven wireline release tool

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