EP0784041B1 - Détonateur avec un cordeau détonant d'allumage - Google Patents

Détonateur avec un cordeau détonant d'allumage Download PDF

Info

Publication number
EP0784041B1
EP0784041B1 EP96119581A EP96119581A EP0784041B1 EP 0784041 B1 EP0784041 B1 EP 0784041B1 EP 96119581 A EP96119581 A EP 96119581A EP 96119581 A EP96119581 A EP 96119581A EP 0784041 B1 EP0784041 B1 EP 0784041B1
Authority
EP
European Patent Office
Prior art keywords
detonator
shrunk
tube
fuse
sleeve
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.)
Expired - Lifetime
Application number
EP96119581A
Other languages
German (de)
English (en)
Other versions
EP0784041A1 (fr
Inventor
Günter Berg
Dieter Faust
Erwin Wrobel
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.)
Diehl Stiftung and Co KG
Original Assignee
Diehl Stiftung and Co KG
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 Diehl Stiftung and Co KG filed Critical Diehl Stiftung and Co KG
Publication of EP0784041A1 publication Critical patent/EP0784041A1/fr
Application granted granted Critical
Publication of EP0784041B1 publication Critical patent/EP0784041B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F42D1/043—Connectors for detonating cords and ignition tubes, e.g. Nonel tubes
    • 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

Definitions

  • the invention relates to a detonator with an ignition cord after Preamble of claim 1.
  • a detonator with detonating cord is known.
  • a watertight connection between the fuse and the detonator is metallic by a detonator and part of the fuse Reached sleeve in which the metallic sleeve in a region of the fuse is strangled.
  • the seal between the sleeve containing the explosive charges and the ignition cord is problematic.
  • the metallic sleeve with the very soft one applies and flexible ignition cord to connect waterproof and firm.
  • According to the DE 30 10 067 C2 does this by a three-stage structure, namely by one dimensionally adapted to the ignition cord, a hydrophobic Lubricant and by repeatedly choking or constricting the sleeve, Hollow body and lighting cord.
  • Such a seal or connection is said to Ensure long-term functionality of the detonator. However, this is not always given.
  • the hydrophobic lubricant becomes Displaces towards the face of the firing cord and penetrates its open End, which affects the ignitability of the ignition cord.
  • On the other hand can occur during strangulation and also due to long-term release of tensions between the face of the ignition cord and the inner sleeve that the Contains primary charge, form a gap that fills with the lubricant and thus represents an ignition barrier.
  • the object of the invention is therefore to reproducible over-ignition between to ensure the ignition cord and the primary charge and that over a Period of> 10 years.
  • the invention solves this problem according to the characterizing features of claim 1.
  • the direct connection between the shrink tube and the ignition cord on the one hand and the sleeve, on the other hand, with the intermediate layer thermoplastic adhesive is both in the shrinking process of the shrink tube as well as after a maximum storage without tension, d. i.e., the ignition cord is free of gaps - without an intermediate layer of adhesive - on the front of the Inner sleeve.
  • the waterproofness is available, so that the overall Function of the detonator - even after a long storage period - is reproducible.
  • the waterproof and firm connection of the ignition cord and the sleeve is inexpensive to be manufactured as no fits and lubricants are required during assembly are. Rather, the shrink tube is problem-free due to an oversize to position and by a short, related to its length Attach the heat zone to the parts mentioned using the adhesive.
  • the glue is in the form of a complete inner coating on the shrink tube.
  • the shrink tube is shrunk onto a section of the fuse, the length of the shrunk portion being about 2.5 to 3 times of the diameter of the ignition cord.
  • the length of the on the sleeve shrink-fit shrink tubing is 1.3 to 1.7 times the diameter the ignition cord. In combination with the adhesive, this guarantees a mechanically safe and waterproof connection. Radial relative movements between the igniter cord and the detonator holder Shrink tube - which is a quasi-elastic coupling - is initially damped and then eliminated so that the adhesive bond is not affected.
  • the shrink tube is an inexpensive and easy-to-use component, that in the above Form of use all requirements for water resistance, Storage stability and strength met.
  • a detonator capsule 1 is firmly connected to an ignition cord 2.
  • the detonator 1 consists of a primary charge 3 in an inner sleeve 4, a secondary charge 5 in an aluminum sleeve 6, a protective cap 7, with a the protective cap 7 screwed detonator holder 8 and from a shrink tube 10th
  • the shrink tube 10 is shown in FIG. 2 in the initial state. At his Inside, it has a very thin layer of a thermoplastic and hydrophobic Glue 11 on. The adhesive 11 is shown symbolically.
  • the sleeve 6 comprises the secondary charge 5, the inner sleeve 4 with the primary charge 3 and part of the ignition cord 2.
  • the outer diameter of the sleeve 6 is in Range of charges 3.5 designated 14.
  • the ignition cord 2 is in the connecting section 16 of the sleeve 6 with little "Game” led.
  • connection portion 16 Outside diameter 17 (Fig. 2). This is compared to the outside diameter 14 approximately corresponding to twice the thickness 18 of the shrink tube 10 downsized.
  • the shrink tube 10 stands with a collar 19 (FIG. 1) of a guide section 22 slightly beyond the free edge 20 of the detonator holder 8 and serves as kink protection for the ignition cord 2.
  • the length of the connecting section 16 of the shrink tube 10 and sleeve 6 is 1.6 times the diameter 12 of the ignition cord 2.
  • the length of the Guide section 22 of the shrink tube 10 is 2.7 times the ignition cord 2 of diameter 12.
  • a distance 25 between an end face 26 of the ignition cord 2 and the connecting section 16 is slightly larger than twice the diameter 12 of the ignition cord 2nd
  • the shrink tube 10 is easily on the sleeve 6 and on the already positioned in the sleeve 6 inserted ignition cord 2 and then for the purposeshrinking exposed to heat treatment.
  • the distances 16 and 25 ensure that when cooling the aluminum existing sleeve 6 and the resulting shortening of the sleeve 6 the End face 26 of the ignition cord 2 with a certain preload on the inner sleeve 4 is present because the shrink tube 10 is the thermally insulated ignition cord 2 already attached in section 22.
  • the ignition cord 2 experiences during the heat treatment the shrink tube 10 no change in length - so in contrast to the sleeve 6, which during the heat treatment with respect to the section 16 with the circumferential shrink tube 10 and the attached subsequent section 25 expands.
  • the heat treatment of the Shrink tube 10 is placed on the ignition cord 2 in the direction of an arrow 28 exerted pressure so that during this phase there was no gap between the end face 26 and the inner sleeve 4 is taken care of.
  • the shrinking process of the shrink tube 10 causes in connection with the adhesive 11 a waterproof and firm connection of the ignition cord 2 and Sleeve 6, the end face 26 without gaps and without being affected by the Adhesive 11 therefore bears directly against the inner sleeve 4.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Insulating Bodies (AREA)

Claims (8)

  1. Capsule explosive (1) avec cordon d'allumage (2), la capsule explosive (1) comprenant une douille (6) en métal, contenant des charges explosives (3, 5), et un boítier, constitué d'un support de capsule explosive (8) vissé avec un capuchon de protection (7),
    et le cordon d'allumage (2), dans sa partie située en regard du support de capsule explosive (8), étant rendu étanche par rapport à la douille (6), par un manchon d'étanchéité (10) doté d'une couche hydrophobe (11) par rapport à la douille (6),
    caractérisée
    en ce que le manchon d'étanchéité est un tuyau rétractable (10) doté d'une couche intérieure faite d'une colle thermoplastique (11),
    le tuyau rétractable (10) logeant, à la manière d'un accouplement élastique, un segment rigide (16) côté ouverture de la douille (6) et un segment de guidage (22) légèrement mobile radialement, côté support, du cordon d'allumage (2).
  2. Capsule explosive selon la revendication 1,
    caractérisée
    en ce que la douille (6) présente, à son ouverture (15), en ce qui concerne son segment (16), un plus petit diamètre extérieur (17) que le diamètre extérieur (14) de la douille (6) logeant les charges explosives (3, 5).
  3. Capsule explosive selon la revendication 1,
    caractérisée
    en ce que le tuyau rétractable (10) s'étend au moins jusqu'au bord libre (20) du support de capsule explosive (8).
  4. Capsule explosive selon la revendication 1,
    caractérisée
    en ce que le segment rigide (16) du tuyau rétractable (10) mesure de 1,3 à 1,7 fois le diamètre (12) du tuyau rétractable (10).
  5. Capsule explosive selon la revendication 1,
    caractérisée
    en ce que le segment de guidage (22) du tuyau rétractable (10) mesure de 2,5 à 3 fois le diamètre (12) du tuyau rétractable (10).
  6. Capsule explosive selon les revendications 1 ou 3,
    caractérisée
    en ce que le tuyau rétractable (10) présente un collet (19) dépassant du bord (20) du support de capsule explosive (8).
  7. Capsule explosive selon la revendication 1,
    caractérisée
    en ce qu'entre le segment rigide (16) et la face frontale (26) du cordon d'allumage (2) se trouve une distance (25) qui est au moins égale à 2 fois le diamètre (12) du cordon d'allumage (2).
  8. Capsule explosive selon la revendication 1,
    caractérisée
    en ce que dans le segment de guidage (22) il existe, du fait d'un léger interstice latéral (24), une possibilité de déplacement radial pour le cordon d'allumage (2) relié au tuyau rétractable (10).
EP96119581A 1996-01-13 1996-12-06 Détonateur avec un cordeau détonant d'allumage Expired - Lifetime EP0784041B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19601094 1996-01-13
DE19601094A DE19601094C2 (de) 1996-01-13 1996-01-13 Sprengkapsel mit Anzündschnur

Publications (2)

Publication Number Publication Date
EP0784041A1 EP0784041A1 (fr) 1997-07-16
EP0784041B1 true EP0784041B1 (fr) 1999-07-28

Family

ID=7782708

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96119581A Expired - Lifetime EP0784041B1 (fr) 1996-01-13 1996-12-06 Détonateur avec un cordeau détonant d'allumage

Country Status (3)

Country Link
EP (1) EP0784041B1 (fr)
AT (1) ATE182573T1 (fr)
DE (2) DE19601094C2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006037552B4 (de) 2006-08-10 2009-11-12 Atc Establishment Strangförmiges Zündmittel, Verfahren und Vorrichtung zum Anformen eines Dichtelements an ein strangförmiges Zündmittel, und Sprengsystem
CN109556472A (zh) * 2019-01-14 2019-04-02 新疆大学 简易爆破起爆装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA729100B (en) * 1972-01-05 1974-01-30 Nitro Nobel Ab Detonating cap
DE2814598A1 (de) * 1978-04-05 1979-10-18 Sobbe Friedrich Wilhelm Sprengkapsel, insbesondere fuer die zuendung von pioniersprengmitteln
DE2814581A1 (de) 1978-04-05 1979-10-18 Sobbe Friedrich Wilhelm Sprengkapsel mit zuendschnur fuer militaerische zwecke
SE429334B (sv) * 1978-04-07 1983-08-29 Nitro Nobel Ab Anordning vid en lagenergistubin
DE3010067A1 (de) * 1980-03-15 1981-10-15 Friedrich Wilhelm Dipl.-Kfm. 4600 Dortmund Sobbe Sprengkapsel mit zuendschnur fuer militaerische zwecke
DE3123250A1 (de) * 1981-06-11 1983-01-05 Friedrich Wilhelm Dipl.-Kfm. 4600 Dortmund Sobbe Sprengschnurverschluss
DE3143899A1 (de) * 1981-11-05 1983-06-23 Dynamit Nobel Ag, 5210 Troisdorf Verstaerkungsladung
DE3447088A1 (de) * 1984-12-22 1986-07-03 Dynamit Nobel Ag, 5210 Troisdorf Zuend- bzw. anzuendmittel
DE3520490A1 (de) * 1985-04-10 1986-10-16 Friedrich-Wilhelm Dipl.-Kaufm. 4600 Dortmund Sobbe Vorrichtung zum verbinden von sprengschnur und zuender
NO905331L (no) * 1990-01-30 1991-07-31 Ireco Inc Forsinkelsesdetonator.
US5009163A (en) * 1990-04-19 1991-04-23 The Ensign-Bickford Company Non-electric signal transmission device connection, method and apparatus therefor
DE9204340U1 (fr) * 1992-03-31 1992-06-25 Sobbe, Friedrich-Wilhelm, Dipl.-Kaufm., 4600 Dortmund, De

Also Published As

Publication number Publication date
DE19601094A1 (de) 1997-07-17
EP0784041A1 (fr) 1997-07-16
DE19601094C2 (de) 1998-04-16
ATE182573T1 (de) 1999-08-15
DE59602541D1 (de) 1999-09-02

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