EP3006889A1 - Chemical igniter with electric triggering - Google Patents
Chemical igniter with electric triggering Download PDFInfo
- Publication number
- EP3006889A1 EP3006889A1 EP15187173.8A EP15187173A EP3006889A1 EP 3006889 A1 EP3006889 A1 EP 3006889A1 EP 15187173 A EP15187173 A EP 15187173A EP 3006889 A1 EP3006889 A1 EP 3006889A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sleeve
- chemical
- detonator according
- plug
- chemical detonator
- 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
- 239000000126 substance Substances 0.000 title claims abstract description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 11
- 238000004382 potting Methods 0.000 claims abstract description 6
- 239000006187 pill Substances 0.000 claims description 11
- 230000037452 priming Effects 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 230000002745 absorbent Effects 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 5
- 238000005538 encapsulation Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
-
- 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
- F42B3/103—Mounting initiator heads in initiators; Sealing-plugs
-
- 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
- F42B3/11—Initiators therefor characterised by the material used, e.g. for initiator case or electric leads
-
- 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
- F42B3/12—Bridge initiators
- F42B3/125—Bridge initiators characterised by the configuration of the bridge initiator case
-
- 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
- F42B3/18—Safety initiators resistant to premature firing by static electricity or stray currents
-
- 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
- F42B3/18—Safety initiators resistant to premature firing by static electricity or stray currents
- F42B3/182—Safety initiators resistant to premature firing by static electricity or stray currents having shunting means
Definitions
- the invention relates to a chemical detonator with a sleeve made of plastic, which accommodates both an igniter connected to Zünddrähten, a Anzündsatz and a Brennsatz igniting pill as well as a pyrotechnic set and to the sleeve outlet through an end plug and the sleeve inlet out with the ignition wires on the primer is closed.
- Such detonators are usually used as an initial for a detonating chain or the like.
- the primer contains a priming charge and a fuel assembly, which cause electrically triggered that the upstream pyrotechnic sentence as an initial delay the downstream explosive devices responsive.
- both the priming pill and the pyrotechnic set are arranged in a sleeve, wherein the primer is connected to ignition wires, which can be connected at the sleeve inlet with the priming pill.
- This sleeve is usually made of polyamide, a slightly conductive plastic. Both during storage and above all during transport and in the field of use, electrostatic charges may occur in the area of such detonators.
- the invention is therefore an object of the invention to provide a chemical igniter, the ESD (electrostatic discharge) is safe and thus the EC-type examination the BAM (Federal Institute for Materials Research and Testing) is sufficient.
- the object is achieved according to the invention in that the sleeve surrounded by a tight-fitting aluminum sleeve and the primer is sealed with a potting against the funnel-shaped expiring inner wall of the sleeve.
- a predetermined rollover point is provided in the region of the connection between the ignition wires and the primer.
- the end plug is designed in such a way that it can not interfere with the pyrotechnic composition and the other parts of the igniter.
- the closure plug has a predetermined breaking point. So if there is a corresponding build-up of pressure in the part of the sleeve containing the pyrotechnic composition, the end plug is certainly destroyed and the pyrotechnic composition can fulfill its function fully.
- an insert is provided between end stopper and pyrotechnic set, which should expediently consist of absorbent paper.
- This absorbent insert prevents even in unfavorable storage and influencing the chemical detonator that the pyrotechnic composition is affected for example by moisture.
- the encapsulation according to the invention in the area of the priming pill can be introduced simply and safely and fully functional if an adhesive, preferably a 2K epoxy resin adhesive, is used as encapsulation.
- an adhesive preferably a 2K epoxy resin adhesive
- This epoxy resin adhesive is particularly suitable here, because it acts against the material of the sleeve and at the same time also the ignition pill so that an accidental destruction of the potting is completely excluded. This ensures that even with longer storage times and also stresses, the casting always fully retains its function.
- the detonators have different energy content levels.
- the invention provides that the end plug has a coloration characterizing the energy content level of the particular igniter used.
- the advantage here is that the anyway required end plug is always easily recognizable and even with appropriate storage in boxes o. ⁇ ., The task or effect of the end plug is affected by this color in any way. It takes only a relatively small part of the igniter to obtain the color, wherein, as mentioned, the end plug as such is always easily identifiable.
- the color should be chosen so that at the largest energy content level black is used to indicate hereby that a large pyrotechnic composition is used.
- the ignition wires are made of copper-plated, tinned or galvanized iron or copper and have PVC insulation. With such executed Zünddrähten an influence of the igniter can be excluded from the outside.
- the different energy content levels already mentioned are in particular characterized in that a different amount of pyrotechnic material is used.
- the invention provides that the sleeve is formed extensible on a Aufsteckteil to larger energy content levels, sleeve and Aufsteckteil are bordered by a continuous, comprehensive aluminum sleeve.
- the advantage here is that always the same sleeve can be used with their peculiarities, wherein the "content" of the sleeve the respective energy content levels can be changed accordingly.
- the invention is characterized in particular by the fact that a chemical detonator is created, which fully satisfies the ESD requirement, so that it can no longer be endangered by such electrostatic charges. This is achieved by changing the outer shell of the sleeve, but also by a seal of the actual interior of the corresponding sleeve of the chemical detonator. It has been found that with this design of the chemical igniter ignitions by electrostatic charges have ceased to occur.
- the sleeve From the funnel 22 of the sleeve 2, the sleeve extends with a smaller diameter to the sleeve inlet 11. In this area, openings 12 are provided for the ignition wires 3, 4, wherein the ignition wires 3, 4 are fixed on the pillar base 6 of the priming pill 5 via brackets 13 ,
- a Sollüberschlagstelle 26 which has the task of providing potential equalization, if corresponding dangers exist.
- an adhesive in particular a 2-component epoxy adhesive is used, which is compatible with both the material of the inner wall 23 of the sleeve 2, as well as with the material of Pillenfußes 6 and the desired sealing function provides.
- the sleeve outlet 9 is a closure plug 10, which as well as the casting described 21 ensures that the stored in the space 15 pyrotechnic set 8 can be stored tightly and safely.
- the stopper 10 has a predetermined breaking point 27, so that it is ensured that the response of the pyrotechnic set 8, the flame or the pressure escape to the outside and can be effective.
- the stopper 10 is placed from above on the sleeve 2 and seals as described also well because it is secured by the sleeve 2 comprising the aluminum sleeve 20 with. The aluminum sleeve 20 is pulled up into the region of the actual lid of the end stopper 10.
- This aluminum sleeve 20 comprises the entire sleeve 2 from the sleeve inlet 9 to the sleeve outlet 11.
- the same also shows FIG. 2 , Downwards, only the ignition wires 3, 4 protrude beyond the sleeve 2. They are connected to the igniter or other suitable device.
- the existing of copper or corresponding iron wire ignition wires 3, 4 are formed so that the corresponding Zünddrahtkern 30 is surrounded by a Zünddrahtmantel 31, wherein for this Zünddrahtmantel 31, a PVC insulation 32 is preferable.
- a predetermined rollover point 26 is provided, which in FIG. 1 is clarified.
- an insert 28 is provided, which consists of absorbent paper and is supported from below to the insertion piece 16 and ensures that this area is additionally sealed to the outside.
- FIG. 3 shows a plan view of a sleeve 2, wherein the aluminum sleeve 20 is recognizable as an outer shell, which includes the actual sleeve 20 all around tight.
- This sleeve 2 is closed by the sleeve outlet 9 through the end plug 10.
- FIG. 4 shows a structure with respect. Ignition Pill 5 and the arrangement or management of the ignition wires 3, 4 forth identical structure as FIG. 1 , However, the room is 15 'opposite the in FIG. 1 shown significantly enlarged. This is achieved by a Aufsteckteil 34, which is placed from above on the sleeve inlet 9, which then carries the connecting plug 10 at the opposite end. Visible here are also the predetermined breaking point 27 and the insert 28.
- the Aufsteckende 36 of the Aufsteckteils 34 extends so far into the "old" sleeve 2 in that the overall sleeve receives the necessary stability. This stability is further supported by the fact that both the Aufsteckteil 34 as well as the old sleeve 2 are bordered by a long continuous aluminum sleeve 35.
- the chemical detonator 1 shown here is intended for an energy content level of 20,000 Ws.
- FIG. 5 illustrates that through the continuous aluminum sleeve 35, a continuous protective jacket is created.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
Die notwendige ESD-Sicherheit bei chemischen Zündern 1 wird dadurch sichergestellt, dass die Hülse 2 des chemischen Zünders 1 mit einer Aluminiumhülse 20 dicht umfasst ist, die Anzündpille 5 über einen Verguss 21 zusätzlich abgedichtet ist und für die Zünddrähte 3, 4 eine Sollüberschlagstelle 26 vorgesehen ist.The necessary ESD safety in chemical detonators 1 is ensured by the fact that the sleeve 2 of the chemical detonator 1 is tightly sealed with an aluminum sleeve 20, the primer 5 is additionally sealed by a potting 21 and a Sollüberschlagstelle 26 is provided for the ignition wires 3, 4 is.
Description
Die Erfindung betrifft einen chemischen Zünder mit einer aus Kunststoff bestehenden Hülse, die sowohl eine mit Zünddrähten verbundene, einen Anzündsatz und einen Brennsatz beinhaltende Anzündpille wie auch einen pyrotechnischen Satz aufnimmt und zum Hülsenauslass hin über einen Abschlussstopfen und zum Hülseneinlass hin mit den Zünddrähten über die Anzündpille verschlossen ist.The invention relates to a chemical detonator with a sleeve made of plastic, which accommodates both an igniter connected to Zünddrähten, a Anzündsatz and a Brennsatz igniting pill as well as a pyrotechnic set and to the sleeve outlet through an end plug and the sleeve inlet out with the ignition wires on the primer is closed.
Derartige Zünder werden meist als Initial für eine Zündkette oder ähnliches eingesetzt. Die Anzündpille beinhaltet einen Anzündsatz und einen Brennsatz, die elektrisch ausgelöst dazu führen, dass der vorgelagerte pyrotechnische Satz als Initial die nachgeordneten Sprengsätze zeitverzögert anspricht. Bei den bisher bekannten derartigen Zündern werden sowohl die Anzündpille wie auch der pyrotechnische Satz in einer Hülse angeordnet, wobei die Anzündpille mit Zünddrähten verbunden ist, die am Hülseneinlass mit der Anzündpille verbunden werden können. Diese Hülse besteht in der Regel aus Polyamid, einem leicht leitfähigen Kunststoff. Sowohl bei der Lagerung wie vor allem auch beim Transport und im Einsatzbereich kann es zu elektrostatischen Aufladungen im Bereich solcher Zünder kommen. Bei der Entladung kann ein durch große Potentialdifferenz entstandener Funke oder Durchschlag den Zünder gefährden bzw. zur Auslösung bringen, was zu unkontrollierten Entzündung der Chemikalien d. h. der Teile des Zünders führen kann, was trotz der geringen Mengen an pyrotechnischem Material im Zünder zu großen Problemen führen kann.Such detonators are usually used as an initial for a detonating chain or the like. The primer contains a priming charge and a fuel assembly, which cause electrically triggered that the upstream pyrotechnic sentence as an initial delay the downstream explosive devices responsive. In the previously known such detonators both the priming pill and the pyrotechnic set are arranged in a sleeve, wherein the primer is connected to ignition wires, which can be connected at the sleeve inlet with the priming pill. This sleeve is usually made of polyamide, a slightly conductive plastic. Both during storage and above all during transport and in the field of use, electrostatic charges may occur in the area of such detonators. During discharge, a spark or breakdown resulting from a large potential difference can endanger the detonator or cause it to trip, leading to uncontrolled ignition of the chemicals d. H. which can cause parts of the igniter, which can lead to great problems despite the small amounts of pyrotechnic material in the igniter.
Der Erfindung liegt daher die Aufgabe zugrunde, einen chemischen Zünder zu schaffen, der ESD (elektrostatische Entladung) sicher ist und damit der EG-Baumusterprüfung der BAM (Bundesanstalt für Materialforschung und -prüfung) genügt.The invention is therefore an object of the invention to provide a chemical igniter, the ESD (electrostatic discharge) is safe and thus the EC-type examination the BAM (Federal Institute for Materials Research and Testing) is sufficient.
Die Aufgabe wird gemäß der Erfindung dadurch gelöst, dass die Hülse von einer dicht anliegenden Aluminiumhülse umgeben und die Anzündpille mit einem Verguss gegenüber der trichterförmig auslaufenden Innenwand der Hülse abgedichtet ist.The object is achieved according to the invention in that the sleeve surrounded by a tight-fitting aluminum sleeve and the primer is sealed with a potting against the funnel-shaped expiring inner wall of the sleeve.
Mit einem derart aufgebauten chemischen Zünder kann es an dem Gehäuse bzw. der eigentlichen Hülse nicht zu elektrostatischen Aufladungen kommen, sodass damit eine falsche bzw. negative Beeinflussung des in der Hülse gelagerten Materials kommen kann. Gleichzeitig ist dieses in der Hülse gelagerte Material aber auch durch weiterer Einflüsse gesichert, weil eben an den Zünddrähten und der Anzündpille vorbei eine Beeinflussung nicht auftreten kann, weil hier der besagte Verguss für die notwendige Dichtheit Sorge trägt. Bei diesem besonders aufgebauten und gesicherten Zünder konnte die ESD-Prüfung mit bis zu 600 mJ-Ohm mit positivem Erfolg (keine Zündung) durchgeführt werden. Damit ist für die normalen Energieinhaltsstufen der zum Einsatz kommenden chemischen Zünder die geforderte Sicherheit gewährleistet. Durch elektrostatische Aufladungen kann es nicht zu Fehlzündungen kommen.With a chemical igniter constructed in this way, electrostatic charges can not occur on the housing or the actual sleeve, so that this can lead to a false or negative influence on the material stored in the sleeve. At the same time, however, this material stored in the sleeve is also secured by further influences, because interference with the ignition wires and the priming pill can not occur because the said sealing ensures the necessary tightness. In this specially designed and secured igniter, the ESD test with up to 600 mJ ohms with positive results (no ignition) could be performed. This guarantees the required safety for the normal energy content levels of the chemical detonator used. Electrostatic charges can not cause misfires.
Nach einer zweckmäßigen Ausbildung der Erfindung ist vorgesehen, dass im Bereich der Verbindung zwischen Zünddrähten und Anzündpille eine Sollüberschlagstelle vorgesehen ist. Durch die beschriebene dichte Einkapselung der entsprechenden Ansprechsätze usw. und die beschriebene Sollüberschlagstelle können unkontrollierte Überschläge vermieden werden, selbst wenn es zu einer elektrostatischen Aufladung in diesem Bereich gekommen sein sollte.According to an expedient embodiment of the invention, it is provided that a predetermined rollover point is provided in the region of the connection between the ignition wires and the primer. By the described tight encapsulation of the appropriate Ansprechsätze etc. and the described Sollüberschlagstelle uncontrolled flashovers can be avoided, even if it should have come to an electrostatic charge in this area.
Der Abschlussstopfen ist wie erwähnt so ausgeführt, dass es hier zu Beeinflussungen des dahinter gelagerten pyrotechnischen Satzes und der anderen Teile des Zünders nicht kommen kann. Um dabei sicherzustellen, dass der Abschlussstopfen bei Ansprechen des pyrotechnischen Satzes dessen Funktion nicht beeinträchtigt, ist vorgesehen, dass der Abschlussstopfen eine Sollbruchstelle aufweist. Erfolgt also ein entsprechender Druckaufbau in dem den pyrotechnischen Satz enthaltenen Teil der Hülse, wird der Abschlussstopfen sicher zerstört und der pyrotechnische Satz kann seine Funktion voll erfüllen.As mentioned, the end plug is designed in such a way that it can not interfere with the pyrotechnic composition and the other parts of the igniter. To make sure that the stopper in response of the pyrotechnic set does not affect its function, it is provided that the closure plug has a predetermined breaking point. So if there is a corresponding build-up of pressure in the part of the sleeve containing the pyrotechnic composition, the end plug is certainly destroyed and the pyrotechnic composition can fulfill its function fully.
Zur Optimierung der Funktion des Abschlussstopfens ist es zweckmäßig, wenn zwischen Abschlussstopfen und pyrotechnischem Satz eine Einlage vorgesehen ist, wobei diese zweckmäßigerweise aus saugfähigem Papier bestehen sollte. Diese saugfähige Einlage verhindert auch bei ungünstigster Lagerung und Beeinflussung des chemischen Zünders, dass der pyrotechnische Satz beispielsweise durch Feuchtigkeit beeinträchtigt wird.In order to optimize the function of the end plug, it is expedient if an insert is provided between end stopper and pyrotechnic set, which should expediently consist of absorbent paper. This absorbent insert prevents even in unfavorable storage and influencing the chemical detonator that the pyrotechnic composition is affected for example by moisture.
Der erfindungsgemäße Verguss im Bereich der Anzündpille kann einfach und sicher und voll funktionsfähig eingebracht werden, wenn als Verguss ein Klebstoff, vorzugsweise ein 2K-Epoxidharzkleber, eingesetzt ist. Dieser Epoxidharzkleber eignet sich hier besonders, weil er gegenüber dem Material der Hülse und gleichzeitig auch der Anzündpille so wirkt, dass ein unbeabsichtigtes Zerstören des Vergusses völlig ausgeschlossen ist. Damit ist sichergestellt, dass auch bei längeren Lagerzeiten und auch Beanspruchungen der Verguss immer seine Funktion voll behält.The encapsulation according to the invention in the area of the priming pill can be introduced simply and safely and fully functional if an adhesive, preferably a 2K epoxy resin adhesive, is used as encapsulation. This epoxy resin adhesive is particularly suitable here, because it acts against the material of the sleeve and at the same time also the ignition pill so that an accidental destruction of the potting is completely excluded. This ensures that even with longer storage times and also stresses, the casting always fully retains its function.
Je nach Einsatzbereich haben die Zünder unterschiedliche Energieinhaltsstufen. Um hier immer sicherzustellen, dass ein Zünder der richtigen Energieinhaltsstufe zum Einsatz kommt, sieht die Erfindung vor, dass der Abschlussstopfen eine die Energieinhaltsstufe des jeweilig verwendeten Zünders kennzeichnende Farbgebung aufweist. Vorteilhaft ist hierbei, dass der sowieso benötigte Abschlussstopfen immer leicht erkennbar ist und zwar auch bei entsprechender Lagerung in Kisten o. ä., wobei die Aufgabe bzw. Wirkung des Abschlussstopfens durch diese Farbgebung in keiner Weise beeinträchtigt wird. Es braucht nur ein relativ kleiner Teil des Zünders die Farbgebung zu erhalten, wobei wie erwähnt der Abschlussstopfen als solcher immer leicht identifizierbar ist. Zweckmäßigerweise sollte die Farbgebung so gewählt werden, dass bei der größten Energieinhaltsstufe schwarz zum Einsatz kommt, um hiermit kenntlich zu machen, dass ein großer pyrotechnischer Satz zum Einsatz kommt.Depending on the field of application, the detonators have different energy content levels. In order to always ensure that an igniter of the correct energy content level is used, the invention provides that the end plug has a coloration characterizing the energy content level of the particular igniter used. The advantage here is that the anyway required end plug is always easily recognizable and even with appropriate storage in boxes o. Ä., The task or effect of the end plug is affected by this color in any way. It takes only a relatively small part of the igniter to obtain the color, wherein, as mentioned, the end plug as such is always easily identifiable. Conveniently, the color should be chosen so that at the largest energy content level black is used to indicate hereby that a large pyrotechnic composition is used.
Einerseits soll sichergestellt werden, dass elektrostatische Aufladungen unwirksam sind bzw. gar nicht erst entstehen können, andererseits ist es wichtig, dass über die Zünddrähte das notwendige Initial sicher und schnell in den gewünschten Bereich des Zünders gebracht wird. Dies ist sichergestellt, wenn die Zünddrähte aus verkupfertem, verzinntem oder verzinktem Eisen oder aus Kupfer hergestellt sind und eine PVC-Isolierung aufweisen. Mit derart ausgeführten Zünddrähten kann eine Beeinflussung des Zünders von außen her ausgeschlossen werden.On the one hand, it should be ensured that electrostatic charges are ineffective or can not occur at all; on the other hand, it is important that the necessary initials are safely and quickly brought into the desired range of the igniter via the ignition wires. This is ensured if the ignition wires are made of copper-plated, tinned or galvanized iron or copper and have PVC insulation. With such executed Zünddrähten an influence of the igniter can be excluded from the outside.
Die schon erwähnten unterschiedlichen Energieinhaltsstufen sind insbesondere dadurch gekennzeichnet, dass eine unterschiedliche Menge an pyrotechnischem Material zum Einsatz kommt. Um z. B. eine höhere Energieinhaltsstufe zu ermöglichen, sieht die Erfindung vor, dass die Hülse über ein Aufsteckteil zu größeren Energieinhaltsstufen erweiterbar ausgebildet ist, wobei Hülse und Aufsteckteil über eine durchgehende, sie umfassende Aluminiumhülse eingefasst sind. Vorteil ist dabei, dass immer die gleiche Hülse mit ihren Besonderheiten Verwendung finden kann, wobei der "Inhalt" der Hülse den jeweiligen Energieinhaltsstufen entsprechend verändert werden kann. Üblich sind z. B. Energieinhaltsstufen bis 5.000 Ws, 10.000 Ws und 20.000 Ws.The different energy content levels already mentioned are in particular characterized in that a different amount of pyrotechnic material is used. To z. B. to allow a higher level of energy content, the invention provides that the sleeve is formed extensible on a Aufsteckteil to larger energy content levels, sleeve and Aufsteckteil are bordered by a continuous, comprehensive aluminum sleeve. The advantage here is that always the same sleeve can be used with their peculiarities, wherein the "content" of the sleeve the respective energy content levels can be changed accordingly. Usual z. B. Energy content levels up to 5,000 Ws, 10,000 Ws and 20,000 Ws.
Die Erfindung zeichnet sich insbesondere dadurch aus, dass ein chemischer Zünder geschaffen ist, der die ESD-Forderung voll genügt, sodass es zu Gefährdungen durch solche elektrostatischen Aufladungen nicht mehr kommen kann. Erreicht wird dies durch die Veränderung des Außenmantels der Hülse, aber auch durch eine Abdichtung des eigentlichen Innenraums der entsprechenden Hülse des chemischen Zünders. Es hat sich gezeigt, dass mit dieser Ausführung des chemischen Zünders keine Zündungen durch elektrostatische Aufladungen mehr aufgetreten sind.The invention is characterized in particular by the fact that a chemical detonator is created, which fully satisfies the ESD requirement, so that it can no longer be endangered by such electrostatic charges. This is achieved by changing the outer shell of the sleeve, but also by a seal of the actual interior of the corresponding sleeve of the chemical detonator. It has been found that with this design of the chemical igniter ignitions by electrostatic charges have ceased to occur.
Weitere Einzelheiten und Vorteile des Erfindungsgegenstandes ergeben sich aus der nachfolgenden Beschreibung der zugehörigen Zeichnung, in der ein bevorzugtes Ausführungsbeispiel mit den dazu notwendigen Einzelheiten und Einzelteilen dargestellt ist. Es zeigen:
- Figur 1
- einen chemischen Zünder im aufgeschnittenen Zustand,
Figur 2- den Zünder nach
Figur 1 in Seitenansicht, Figur 3- eine Draufsicht auf den Zünder mit Abschlussstopfen,
Figur 4- einen Zünder einer großen Energieinhaltsstufe im Schnitt und
- Figur 5
- den entsprechenden Zünder in Seitenansicht.
- FIG. 1
- a chemical detonator in the cut state,
- FIG. 2
- the detonator after
FIG. 1 in side view, - FIG. 3
- a top view of the detonator with stopper,
- FIG. 4
- an igniter of a large energy content level on average and
- FIG. 5
- the appropriate detonator in side view.
Bei dem in
Vom Trichter 22 der Hülse 2 aus verläuft die Hülse mit einem kleineren Durchmesser bis zum Hülseneinlass 11. In diesem Bereich sind Öffnungen 12 für die Zünddrähte 3, 4 vorgesehen, wobei die Zünddrähte 3, 4 über Klammern 13 am Pillenfuß 6 der Anzündpille 5 festgelegt sind. Hier befindet sich auch eine Sollüberschlagstelle 26, die die Aufgabe hat, für einen Potentialausgleich zu sorgen, wenn entsprechende Gefahren bestehen.From the
Für den Verguss 21 wird ein Klebstoff, insbesondere ein 2K-Epoxidharzkleber eingesetzt, der sich sowohl mit dem Material der Innenwand 23 der Hülse 2, wie auch mit dem Material des Pillenfußes 6 verträgt bzw. die gewünschte dichtende Funktion erbringt.For the
Am gegenüberliegenden Ende, d. h. dem Hülsenauslass 9 befindet sich ein Abschlussstopfen 10, der ebenso wie der beschriebene Verguss 21 dafür Sorge trägt, dass der im Raum 15 gelagerte pyrotechnische Satz 8 dicht und sicher gelagert werden kann. Der Abschlussstopfen 10 verfügt über eine Sollbruchstelle 27, sodass sichergestellt ist, dass beim Ansprechen des pyrotechnischen Satzes 8 die Flamme bzw. der Druck nach außen austreten und wirksam werden kann. Der Abschlussstopfen 10 ist von oben her auf die Hülse 2 aufgesetzt und dichtet wie beschrieben auch deshalb gut ab, weil er von der die Hülse 2 umfassenden Aluminiumhülse 20 mit gesichert ist. Die Aluminiumhülse 20 ist bis in den Bereich des eigentlichen Deckels des Abschlussstopfens 10 hochgezogen.At the opposite end, d. H. the
Diese Aluminiumhülse 20 umfasst die gesamte Hülse 2 vom Hülseneinlass 9 bis zum Hülsenauslass 11. Entsprechendes zeigt auch
Die aus Kupfer oder entsprechendem Eisendraht bestehenden Zünddrähte 3, 4 sind so ausgebildet, dass der entsprechende Zünddrahtkern 30 von einem Zünddrahtmantel 31 umgeben ist, wobei für diesen Zünddrahtmantel 31 eine PVC-Isolierung 32 vorzuziehen ist.The existing of copper or corresponding iron
Im Bereich der Verbindung 25 zwischen den Zünddrähten 3, 4 und der Klammer 13 der Anzündpille 5 ist, wie schon erwähnt, eine Sollüberschlagstelle 26 vorgesehen, was in
Das Aufsteckende 36 des Aufsteckteils 34 reicht so weit in die "alte" Hülse 2 hinein, dass die Gesamthülse die notwendige Stabilität erhält. Diese Stabilität wird weiter dadurch unterstützt, dass sowohl das Aufsteckteil 34 wie auch die alte Hülse 2 von einer langen durchgehenden Aluminiumhülse 35 eingefasst sind. Der hier gezeigte chemische Zünder 1 ist für eine Energieinhaltsstufe 20.000 Ws vorgesehen.
Alle genannten Merkmale, auch die den Zeichnungen allein zu entnehmenden, werden allein und in Kombination als erfindungswesentlich angesehen.All mentioned features, including the drawings to be taken alone, are considered to be essential to the invention alone and in combination.
Claims (9)
dadurch gekennzeichnet,
dass die Hülse (2) von einer dicht anliegenden Aluminiumhülse (20) umgeben und die Anzündpille (5) mit einem Verguss (21) gegenüber der trichterförmig auslaufenden Innenwand (23) der Hülse (2) abgedichtet ist.A chemical igniter having a sleeve (2) made of plastic, which accommodates both a priming pill (5) connected to ignition wires (3, 4), a primer set and a fuel assembly, and a pyrotechnic set (8), and to the sleeve outlet (9) is closed by way of an end plug (10) and to the sleeve inlet (11) with the ignition wires (3, 4) via the priming pill (5),
characterized,
that the sleeve (2) of a tight-fitting aluminum sleeve (20) is surrounded and the ignition cap (5) with a casting (21) opposite the funnel-shaped tapered inner wall (23) of the sleeve (2) is sealed.
dadurch gekennzeichnet,
dass im Bereich der Verbindung (25) zwischen Zünddrähten (3, 4) und Anzündpille (5) eine Sollüberschlagstelle (26) vorgesehen ist.Chemical detonator according to claim 1,
characterized,
that in the region of the connection (25) between the ignition wires (3, 4) and primer (5) a Sollüberschlagstelle (26) is provided.
dadurch gekennzeichnet,
dass der Abschlussstopfen (10) eine Sollbruchstelle (27) aufweist.Chemical detonator according to claim 1,
characterized,
that the closure plug (10) has a predetermined breaking point (27).
dadurch gekennzeichnet,
dass zwischen Abschlussstopfen (10) und pyrotechnischem Satz (8) eine Einlage (28) vorgesehen ist.Chemical detonator according to claim 1,
characterized,
in that an insert (28) is provided between the end stopper (10) and the pyrotechnic set (8).
dadurch gekennzeichnet,
dass die Einlage (28) zwischen Abschlussstopfen (10) und pyrotechnischem Satz (8) aus saugfähigem Papier hergestellt ist.Chemical detonator according to claim 4,
characterized,
in that the insert (28) between end plug (10) and pyrotechnic set (8) is made of absorbent paper.
dadurch gekennzeichnet,
dass als Verguss (21) ein Klebstoff, vorzugsweise ein 2K-Epoxidharzkleber, eingesetzt ist.Chemical detonator according to claim 1,
characterized,
in that an adhesive, preferably a 2K epoxy resin adhesive, is used as potting (21).
dadurch gekennzeichnet,
dass der Abschlussstopfen (10) eine die Energieinhaltsstufe des jeweilig verwendeten Zünders (1) kennzeichnende Farbgebung aufweist.Chemical detonator according to claim 1,
characterized,
in that the closure plug (10) has a coloration characterizing the energy content level of the respectively used igniter (1).
dadurch gekennzeichnet,
dass die Zünddrähte (3, 4) aus verkupfertem, verzinntem oder verzinktem Eisen oder aus Kupfer hergestellt sind und eine PVC-Isolierung (32) aufweisen.Chemical detonator according to claim 1,
characterized,
that the ignition wires (3, 4) are made of copper-plated, tinned or galvanized iron or of copper and have a PVC insulation (32).
dadurch gekennzeichnet,
dass die Hülse (2) über ein Aufsteckteil (34) zu größeren Energieinhaltsstufen erweiterbar ausgebildet ist, wobei Hülse (2) und Aufsteckteil (34) über eine durchgehende, sie umfassende Aluminiumhülse (35) eingefasst sind.Chemical detonator according to claim 1,
characterized,
in that the sleeve (2) is designed to be expandable to larger energy content levels via a plug-on part (34), the sleeve (2) and plug-on part (34) being enclosed by a continuous aluminum sleeve (35) encompassing them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15187173T PL3006889T3 (en) | 2014-10-08 | 2015-09-28 | Chemical igniter with electric triggering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014114566.6A DE102014114566A1 (en) | 2014-10-08 | 2014-10-08 | Chemical detonator with electrical release |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3006889A1 true EP3006889A1 (en) | 2016-04-13 |
| EP3006889B1 EP3006889B1 (en) | 2017-06-14 |
Family
ID=54359712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15187173.8A Active EP3006889B1 (en) | 2014-10-08 | 2015-09-28 | Chemical igniter with electric triggering |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9551556B2 (en) |
| EP (1) | EP3006889B1 (en) |
| DE (1) | DE102014114566A1 (en) |
| PL (1) | PL3006889T3 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2642570C1 (en) * | 2017-02-02 | 2018-01-25 | Акционерное общество "Чебоксарское производственное объединение имени В.И. Чапаева" | Igniter |
| EP3771881B1 (en) * | 2019-07-29 | 2024-03-13 | Fog GmbH | Pyrotechnic initiator for initiating an ignition tube and method for initiating an ignition tube |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2612942A1 (en) * | 1976-02-18 | 1977-08-25 | Gevelot S A | ELECTROPYROTECHNICAL FIXING DEVICE PROTECTED AGAINST ELECTROSTATIC DISCHARGE |
| CA1295185C (en) * | 1986-02-21 | 1992-02-04 | Wang Quicheng | Non-primary explosive detonator |
| DE4429175A1 (en) * | 1993-08-25 | 1995-03-02 | Ems Patvag Ag | Encapsulated electrical ignitor (fuze) having an integrated overvoltage suppressor for a gas generator |
| EP1898175A1 (en) * | 2006-09-05 | 2008-03-12 | Daicel Chemical Industries, Ltd. | Apparatus including igniter assembly |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3366055A (en) * | 1966-11-15 | 1968-01-30 | Green Mansions Inc | Semiconductive explosive igniter |
| DE4214033A1 (en) * | 1992-04-29 | 1993-11-04 | Dynamit Nobel Ag | ELECTRIC IGNITION ELEMENT WITH TARGET DISCHARGE LINE |
| US6164208A (en) * | 1998-07-14 | 2000-12-26 | Chung Shan Institute Of Science & Technology | Igniter for vehicle airbag inflator |
| US6739264B1 (en) * | 2002-11-04 | 2004-05-25 | Key Safety Systems, Inc. | Low cost ignition device for gas generators |
-
2014
- 2014-10-08 DE DE102014114566.6A patent/DE102014114566A1/en not_active Withdrawn
-
2015
- 2015-09-28 EP EP15187173.8A patent/EP3006889B1/en active Active
- 2015-09-28 PL PL15187173T patent/PL3006889T3/en unknown
- 2015-10-08 US US14/877,960 patent/US9551556B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2612942A1 (en) * | 1976-02-18 | 1977-08-25 | Gevelot S A | ELECTROPYROTECHNICAL FIXING DEVICE PROTECTED AGAINST ELECTROSTATIC DISCHARGE |
| CA1295185C (en) * | 1986-02-21 | 1992-02-04 | Wang Quicheng | Non-primary explosive detonator |
| DE4429175A1 (en) * | 1993-08-25 | 1995-03-02 | Ems Patvag Ag | Encapsulated electrical ignitor (fuze) having an integrated overvoltage suppressor for a gas generator |
| EP1898175A1 (en) * | 2006-09-05 | 2008-03-12 | Daicel Chemical Industries, Ltd. | Apparatus including igniter assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| US9551556B2 (en) | 2017-01-24 |
| DE102014114566A1 (en) | 2016-04-14 |
| EP3006889B1 (en) | 2017-06-14 |
| PL3006889T3 (en) | 2017-12-29 |
| US20160102957A1 (en) | 2016-04-14 |
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