EP0030498B1 - Raccord pyrotechnique à parties étanches et autolargables - Google Patents

Raccord pyrotechnique à parties étanches et autolargables Download PDF

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Publication number
EP0030498B1
EP0030498B1 EP19800401716 EP80401716A EP0030498B1 EP 0030498 B1 EP0030498 B1 EP 0030498B1 EP 19800401716 EP19800401716 EP 19800401716 EP 80401716 A EP80401716 A EP 80401716A EP 0030498 B1 EP0030498 B1 EP 0030498B1
Authority
EP
European Patent Office
Prior art keywords
relay
pyrotechnic
donor
receiver
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
Application number
EP19800401716
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0030498A1 (fr
Inventor
Paul Hubert Boeglin
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.)
Airbus Group SAS
Original Assignee
Airbus Group SAS
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 Airbus Group SAS filed Critical Airbus Group SAS
Publication of EP0030498A1 publication Critical patent/EP0030498A1/fr
Application granted granted Critical
Publication of EP0030498B1 publication Critical patent/EP0030498B1/fr
Expired 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
    • 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

Definitions

  • the invention relates to a pyrotechnic connection for the transmission of a pyrotechnic signal from a first to a second pyrotechnic chain comprising a first donor relay and a second receiver relay and clamping means for pressing the funds against each other. the donor relay and the receiver relay.
  • Document US-A-3129 663 discloses a pyrotechnic connector disposed at the end of a low energy transmission chain.
  • the pyrotechnic chain ends with a reinforcing relay and a tip attached to the chain at a point spaced from its end.
  • the tip has a circular collar.
  • the connector comprises a body having an axial bore which is of a diameter smaller than the diameter of the collar, but slightly greater than the diameter of the pyrotechnic chain.
  • the end of the chain is inserted into the bore of the body until the collar touches the body. Through holes for the evacuation of gases produced by the explosion of the relay are made in the body and put the interior of the latter into communication with the atmosphere.
  • the present invention specifically relates to a pyrotechnic connection with leaktight and self-releasable parts for the transmission of a pyrotechnic signal from a first to a second pyrotechnic chain, which overcomes these drawbacks. It comprises two waterproof pyrotechnic relays mounted facing one another on the same axis and capable of being separated while retaining their tightness, said relays being arranged so that the first relay delivers a detonation signal as it travels in the form of shock through the funds of said relays and initiate the explosive charge of the second relay.
  • the connector according to the invention allows the uncoupling of two constituent parts and it eliminates during operation the possible deterioration of adjacent equipment, just as it avoids pollution of the ambient environment.
  • Such a connector can be used in the field of connection or separation structures such as two stages of ballistic missiles, satellites or their launchers. It eliminates the deterioration of adjacent equipment such as electrical equipment located near the connection and liable to be damaged, since the transmission of the detonation signal between the two relays in contact and charged with explosives is carried out without perforation of neither of the two relay funds, therefore without rejection of heat and powder, making possible their separation without nuisance after passing the signal.
  • said first pyrotechnic chain engages inside a first sleeve
  • the second chain engages inside a second sleeve
  • the first and second chains being held respectively in the first and second sleeves, by a first and a second nut screwed into the latter.
  • the general reference 2 designates the pyrotechnic connector according to the invention.
  • the connector 2 allows the transmission of a pyrotechnic signal in the direction of arrow A, from a first pyrotechnic chain 4 to a second pyrotechnic chain 6.
  • the chain pyrotechnic 4 constituted by a strand of detonating cord surrounded by a sheath 5, is terminated by a first reinforcing relay 8, crimped at its end and engaging in a first pyrotechnic relay 10, called donor relay.
  • the second pyrotechnic chain 6 constituted by a strand of detonating cord surrounded by a sheath 7 is, in the same way, terminated by a second reinforcing relay 12 crimped at its end and engaging in a second pyrotechnic relay 14, called receiving relay .
  • the donor relay 10 and the receiver relay 14 are engaged opposite one another along the same axis inside an internal positioning part 16. This part 16 is pierced with a series of bores of different diameters.
  • the narrower central bore 18 receives the donor relay 10.
  • In a second bore 20 of the central positioning piece 16 is engaged the shoulder portion 22 of the receiver relay 14.
  • the bottoms 24 and 26 of these two relays are located at contact.
  • the first sleeve 28 is screwed onto said internal positioning part 16 which is itself integral with structure 29.
  • the structures 29 and 31 are capable of being separated from one another. These are for example two stages of ballistic missiles, satellites or launchers.
  • a first nut 32 holds the end of the first pyrotechnic chain inside the first sleeve 28.
  • a second nut 34 holds the end of the second pyrotechnic chain inside the second sleeve 30.
  • Two nuts 49 and 50 secure the assembly of the fitting to the structural frames 29 and 31.
  • the pyrotechnic connector according to the invention comprises clamping means for pressing the bottoms 24 and 26 of the donor relay 10 and of the receiver relay 14 against each other.
  • clamping means are constituted by a helical spring 36 housed at the inside the bore 37 of said internal positioning part 16, and compressed between the donor relay 10 and the first sleeve 28.
  • the pyrotechnic connector 2 comprises means for sealing between each of said donor 10 and receiver 14 relays, and said positioning piece central 16.
  • These means consist of different O-rings: an O-ring 38 placed between the donor relay 10 in the bore 18, and on the other hand, a centering O-ring 40 placed in the receiver relay 14 of the bore 20.
  • the pyrotechnic connection 2 also comprises means for ensuring a seal between the donor relay 10 and the exterior of the pyrotechnic connection.
  • These means consist of different seals: an O-ring 42 placed in a groove of the first reinforcing relay 8, a seal 44 placed between the internal positioning part 16 and said first sleeve 28.
  • the means to ensure a seal between the receiver relay 14 and the outside of the pyrotechnic connector 2 are constituted by an O-ring 46 placed in a groove of the reinforcing relay 12 and by a seal 48 placed between the receiver relay 14 and said second sleeve 30.
  • relay 2 The operation of relay 2 is as follows.
  • a detonator (not shown) initiates the transmission chain 4 to detonate the explosive of the donor relay 10.
  • the detonation signal delivered by this donor relay is sufficiently energetic to transit in the form of a shock wave through the watertight partitions 24 and 26 formed by the relay funds, and initiate the explosive of the receiver relay 14, in order to transmit the pyrotechnic signal to the transmission chain 6.
  • the two donor and recipient relays can be separated without harming the environment.
  • the first pyrotechnic relay receives the pyrotechnic signal from the first transmission chain 4 constituted by a strand of detonating cord surrounded by a sheath 5 and terminated by a reinforcing relay 8 crimped at its end.
  • the second pyrotechnic relay (known as the "receiver 14" relay, initiated by relay 10 retransmits the pyrotechnic signal to a second transmission chain 6 constituted by a strand of detonating cord surrounded by a sheath 7 and terminated by a reinforcing relay 12 set at its end.
  • the donor relay 10 and the receiver relay 14 ' are engaged facing each other, on the same axis, in a positioning part 16' whose end 16'a shaped as a truncated cone receives the end 14 ′ also has a truncated cone shape of the relay 14 ′, the bottoms 24 and 26 of these two relays being in contact.
  • the first pyrotechnic chain 4 engages inside a sleeve 28 'whose internal end comes to bear on the donor relay 10, said chain being screwed into said sleeve 28' by means of a nut 32
  • This sleeve 28 ' is itself screwed into the part 16' made integral with a frame 29 of the structure.
  • the second pyrotechnic chain 6 engages inside a sleeve 30 whose internal end 30a is screwed onto the rear part 14'b of the relay 14 '.
  • the sleeve 30 is made integral with a structural frame 31 while the second chain 6 is screwed into the sleeve 30 by means of a nut 34.
  • Two nuts 49. And 50 ensure the fixing of the whole of the fitting on the structural frames 29 and 31.
  • the clamping means intended to press the bottoms 24 and 26 of the donor relay 10 and of the receiver relay 14 'against each other are constituted by the internal positioning part 16 'screwed onto the sleeve 28' and by a lock nut 51 pressing internally on a flange 28'a of the sleeve 28 ', and screwed onto the external part 16'b of the part 16.
  • Such a system locking screw and lock nut provides better resistance to vibrations of the entire fitting.
  • the sealing of the "donor part of the fitting is ensured by a seal 52 located between the relay 10 and the sleeve 28" while the sealing of the "recipient part is ensured by a seal, in this case an adhesive joint. between relay 14 'and sleeve 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Air Bags (AREA)
EP19800401716 1979-12-07 1980-12-01 Raccord pyrotechnique à parties étanches et autolargables Expired EP0030498B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7930062 1979-12-07
FR7930062A FR2470757A1 (fr) 1979-12-07 1979-12-07 Raccord pyrotechnique a parties etanches et autolargables

Publications (2)

Publication Number Publication Date
EP0030498A1 EP0030498A1 (fr) 1981-06-17
EP0030498B1 true EP0030498B1 (fr) 1984-05-23

Family

ID=9232502

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800401716 Expired EP0030498B1 (fr) 1979-12-07 1980-12-01 Raccord pyrotechnique à parties étanches et autolargables

Country Status (3)

Country Link
EP (1) EP0030498B1 (https=)
DE (1) DE3067976D1 (https=)
FR (1) FR2470757A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7591212B2 (en) 2003-07-10 2009-09-22 Baker Hughes Incorporated Connector for perforating gun tandem

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4592281A (en) * 1982-07-29 1986-06-03 Special Devices, Inc. Arming and firing device
FR2559451B1 (fr) * 1984-02-09 1986-08-08 Dassault Avions Dispositif de connexion pour circuit pyrotechnique aboutissant a une verriere d'avion
US4608926A (en) * 1984-09-13 1986-09-02 Thiokol Corporation Swivel type through bulkhead initiator
US4660472A (en) * 1985-10-07 1987-04-28 Morton Thiokol Inc. Optical through bulkhead initiator and safe-arm device
ZW788A1 (en) * 1987-02-11 1988-08-31 Aeci Ltd A propagating device for low energy fuses
US4759291A (en) * 1987-07-06 1988-07-26 Halliburton Company Through bulkhead explosive initiator for oil well usage
FR2648554B1 (fr) * 1989-06-20 1994-03-25 Thomson Brandt Armements Systeme mettant en oeuvre un dispositif electropyrotechnique destine a declencher sequentiellement le fonctionnement d'une batterie de generateurs de gaz
SE9202079D0 (sv) * 1992-07-06 1992-07-06 Bergslagens Produktutveckling Pyroteknisk kopplingselement
FR2862131B1 (fr) 2003-11-06 2006-06-30 Eads Space Transportation Sa Raccord pyrotechnique a parties dissociables et lanceur comportant au moins un tel raccord
FR2998361B1 (fr) * 2012-11-21 2015-02-13 Dassault Aviat Dispositif de connexion pyrotechnique entre deux circuits d'une chaine pyrotechnique et procede associes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE208875C (https=) * 1908-01-21
US3129663A (en) * 1961-08-11 1964-04-21 Aircraft Armaments Inc Fittings for low energy detonating cord
US3678853A (en) * 1970-06-12 1972-07-25 Us Navy Quick disconnect explosive connector assembly
US3855934A (en) * 1972-09-28 1974-12-24 Us Army Blind mating connector for missile sections

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7591212B2 (en) 2003-07-10 2009-09-22 Baker Hughes Incorporated Connector for perforating gun tandem

Also Published As

Publication number Publication date
EP0030498A1 (fr) 1981-06-17
FR2470757A1 (fr) 1981-06-12
DE3067976D1 (en) 1984-06-28
FR2470757B1 (https=) 1983-04-01

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