EP2378236A2 - Dispositif d'allumage préalable destiné à brûler des carburants et des matières explosives - Google Patents

Dispositif d'allumage préalable destiné à brûler des carburants et des matières explosives Download PDF

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Publication number
EP2378236A2
EP2378236A2 EP11003027A EP11003027A EP2378236A2 EP 2378236 A2 EP2378236 A2 EP 2378236A2 EP 11003027 A EP11003027 A EP 11003027A EP 11003027 A EP11003027 A EP 11003027A EP 2378236 A2 EP2378236 A2 EP 2378236A2
Authority
EP
European Patent Office
Prior art keywords
energy storage
firing pin
storage device
locking
ignition device
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Withdrawn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
EP11003027A
Other languages
German (de)
English (en)
Other versions
EP2378236A3 (fr
Inventor
Johann Huber
Karl Bauer
Andreas Hacker
Detlev Friedemann
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.)
Bayern Chemie Gesellschaft fuer Flugchemische Antriebe mbH
Original Assignee
Bayern Chemie Gesellschaft fuer Flugchemische Antriebe mbH
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 Bayern Chemie Gesellschaft fuer Flugchemische Antriebe mbH filed Critical Bayern Chemie Gesellschaft fuer Flugchemische Antriebe mbH
Publication of EP2378236A2 publication Critical patent/EP2378236A2/fr
Publication of EP2378236A3 publication Critical patent/EP2378236A3/fr
Withdrawn legal-status Critical Current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
    • F42B39/00—Packaging or storage of ammunition or explosive charges; Safety features thereof; Cartridge belts or bags
    • F42B39/14—Explosion or fire protection arrangements on packages or ammunition

Definitions

  • the invention relates to a pre-ignition device for burning off fuels or explosives according to the preamble of claim 1.
  • the object of the invention is to provide a ceremonieszündvoriques for fuels or explosives, which reliably ignites the fuel or explosive at a certain temperature, but does not cause a reaction below this temperature.
  • the energy storage device is charged by heating alone, so without external power supply, z. B. by a battery or the like.
  • the energy storage device so for example a spring with which the firing pin is loaded, not charged at the intended temperature of the fuel or explosive, so for example, the spring is not tensioned.
  • the intended temperature is the storage and operating temperature of the fuel or explosive to understand, which may be, for example, a maximum of +85 ° Celsius.
  • the energy storage device is first charged by heating, when the intended temperature has been exceeded.
  • the triggering temperature ie the temperature at which the device according to the invention is triggered, should be as far above the intended temperature as possible, but also as far as possible below the autoignition temperature of the fuel or explosive.
  • the self-ignition temperature of the solid propellant is above 160 °. Ie. if the propellant is heated to this temperature, a deflagration and possibly an explosion may occur.
  • the desired triggering temperature is at least 90 ° Celsius, in particular at least 160 ° Celsius and at most 150 ° Celsius, in particular at most 130 ° Celsius. The more you get to the autoignition temperature with the release temperature, the more violent can be a possible, explosive reaction.
  • the energy storage device can have a spring, for example a compression spring, as energy storage element. However, it may also be formed by another elastic element, a compressible gas volume or the like. Ie. According to the invention, the energy storage device may be any device that provides the energy in the form of a force over a particular path.
  • the working element is formed by a Dehnstoffarbeitselement.
  • Dehnstoffarbeitsevoke are known (see, for example DE 20 2006 001 145 U1 ). With such an element lifting movements can be performed with great force.
  • Expansion elements have a pressure-resistant housing, which is open on one side. The open side is closed with a membrane or an elastomeric insert. On the membrane or the elastomer insert sits a working piston. The housing is filled with an expanding material, which expands when heated. Due to the expansion of the expansion material of the working piston is moved, whereby the working stroke is performed.
  • the lifting movement of the working piston of the expansion element can be transferred to the energy storage device in order to charge the energy storage device.
  • the working piston of the working element is preferably releasably connected to the firing pin,
  • a locking device which is unlocked only at the triggering temperature.
  • the locking device may comprise a solid material whose melting point for unlocking the firing pin corresponds to the triggering temperature.
  • the locking device also preferably has at least one locking element which is supported on this solid material when the firing pin is locked, but releases the firing pin after the solid material melts at the triggering temperature.
  • the solid material in the energy storage device is preferably provided at a position at which the Locking element supported with charged energy storage device.
  • the solid material may already have melted before the working element has charged the energy storage device.
  • the solid material blocking the locking means having a melting point corresponding to the triggering temperature may already be in liquid form when the working member charges the energy storage device.
  • the triggering temperature predetermined by the melting point of the solid material must have been reached in order to trigger the ignition and thus to burn off the fuel or explosive.
  • FIG. 1 is in a rocket motor 2 in the remote from the nozzle end portion of the combustion chamber 4, an early ignition device 1 in the immediate vicinity of the fuel 3 is arranged.
  • FIGS. 2 to 4 has the ceremonies and others, which are charged by the working element 6.
  • the energy storage device 7 represents a device that provides the energy in the form of a force over a certain path.
  • the energy storage device 7 may be formed as a compression spring 5.
  • the working element 6 is designed as an expansion element, ie it has an in FIGS. 2 to 4 not shown in detail housing, which is filled with an expanding material which expands when heated.
  • the open side of the housing is sealed with a diaphragm or elastomeric insert to actuate a working piston with the piston rod 12.
  • the lifting movement of the piston rod 12 is transmitted to the energy storage device 7 in order to charge the energy storage element 10 formed by the compression spring 11, so compress the compression spring 11.
  • the working element 6 and the energy storage device 7 are arranged on a base body 13.
  • the hot gases and particles formed when igniting the primer 16 exit via a bore 17 from the base body 13 to the fuel 3 (FIG. FIG. 1 ) or to ignite the explosive.
  • the firing pin 14 is slidably guided in the housing 18 of the energy storage device 7, which is fixed to the base body 13.
  • the compression spring 11 is arranged as a spiral spring about the firing pin 14 and is based on the one hand on an annular shoulder 19 at the ignition 15 facing the end of the firing pin 14 and on the other hand on an annular shoulder 20 on the inside of the housing 18.
  • the piston rod 12 of the working element 6 is releasably connected to the firing pin 14.
  • the piston rod 12 is attached via an arm 21 to a sleeve 22 which is guided on the outside of the housing 18 in the longitudinal direction displaceable.
  • the sliding sleeve 22 is firmly connected, for example with a screw 23 with a trigger part 24.
  • the trigger part 24 is according to FIG. 2 and 3 detachably connected to the firing pin 14 via a locking device 25.
  • the trigger part 24 facing the end of the firing pin 14 engages in a recess 27 of the trigger member 24 a.
  • Openings 29 are provided in which formed as balls locking elements 26 are arranged radially displaceable.
  • the locking elements 26 engage on the one hand in a groove formed as an annular recess 31 at one end of the firing pin 14, which in the locked position according to FIG. 2 is arranged in the recess 27 of the release part 24, while the locking elements or balls 26 radially outward according to FIG. 2 supported on the inside of the housing 18 of the energy storage device 7.
  • the firing pin 8 is accelerated by the energy storage device 7 and the compression spring 11 only to ignite the primer 16 when the locking of the firing pin 14 has been canceled by the locking device 25.
  • a socket solid material 32 whose melting point is equal to the triggering temperature.
  • the solid material 32 may be a solder, for example a bismuth and / or lead-containing solder.
  • the locking elements or balls 26 may deflect radially outward into the molten material 32.
  • the locking elements or balls 26 move out of the formed as an annular groove 31 grid recess in the firing pin 14, whereby the
  • the locking elements or balls 26 can move out of the recess 31 radially out into the molten material 32, the trigger part 24 facing flank 33 of the recess 31 is formed obliquely, so that by the tensioned compression spring 11 in the charged position of the energy storage device. 4 according to FIG. 3 a radial pressure is exerted to the outside on the locking elements 20.
  • the spring 11 is slightly biased to prevent that in the rest or starting position of the firing pin 14 and other moving parts of the energy storage device 7 can move in vibration, shock or the like and thus, for example Wear in the Teczündvorraum 1 lead.
  • the bias is only so low that the pressure of the spring 11 is not able to initiate the ignition.
  • the Dehnstoffarbeitselement 6 is provided with an expansion material 35 which is pressed at temperature increase through openings 40 in the cylinder chamber 36 to move the piston 38 and thus the firing pin 14 for charging the energy storage device 7, so for tensioning the spring 11.
  • a radially displaceable pin is provided, which engages in the rest or initial position of the early ignition device 1 in a conical recess 37 in the firing pin 14.
  • the ignition 15 is formed by a primer 16 which is arranged in an ignition holder 41. Otherwise, the Appelzündvoriques corresponds to FIG. 5 essentially according to FIGS. 2 to 4 ,

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Air Supply (AREA)
EP11003027.7A 2010-04-15 2011-04-11 Dispositif d'allumage préalable destiné à brûler des carburants et des matières explosives Withdrawn EP2378236A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010015047 DE102010015047B4 (de) 2010-04-15 2010-04-15 Frühzündvorrichtung zum Abbrennen von Treibstoffen und Explosivstoffen

Publications (2)

Publication Number Publication Date
EP2378236A2 true EP2378236A2 (fr) 2011-10-19
EP2378236A3 EP2378236A3 (fr) 2014-06-04

Family

ID=44064926

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11003027.7A Withdrawn EP2378236A3 (fr) 2010-04-15 2011-04-11 Dispositif d'allumage préalable destiné à brûler des carburants et des matières explosives

Country Status (2)

Country Link
EP (1) EP2378236A3 (fr)
DE (1) DE102010015047B4 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006001145U1 (de) 2006-01-24 2007-06-06 Mann+Hummel Gmbh Dehnstoffarbeitselement
DE102008025218B3 (de) 2008-05-27 2009-11-12 Bayern-Chemie Gesellschaft Für Flugchemische Antriebe Mbh Initiator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937596A (en) * 1958-10-02 1960-05-24 James M Meek Thermal fuze
FR2564965B1 (fr) * 1984-05-25 1988-07-22 Matra Dispositif d'interruption de chaine pyrotechnique sensible a la temperature
US4843965A (en) * 1988-02-23 1989-07-04 The United States Of America As Represented By The Secretary Of The Navy Thermally activated triggering device
US4961313A (en) * 1988-08-08 1990-10-09 Hughes Aircraft Company Thermally initiated mechanically fired device for providing protection against slow cook-off
FR2685079B1 (fr) * 1991-12-13 1995-05-12 Lacroix E Tous Artifices Dispositif mecanique sensible a la temperature pour l'initiation d'un systeme pyrotechnique.
FR2699663B1 (fr) * 1992-12-18 1995-02-24 Giat Ind Sa Dispositif d'initiation pour un système pyrotechnique.
DE102004038039A1 (de) * 2004-08-05 2006-02-23 Diehl Bgt Defence Gmbh & Co. Kg Raketenmotor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006001145U1 (de) 2006-01-24 2007-06-06 Mann+Hummel Gmbh Dehnstoffarbeitselement
DE102008025218B3 (de) 2008-05-27 2009-11-12 Bayern-Chemie Gesellschaft Für Flugchemische Antriebe Mbh Initiator

Also Published As

Publication number Publication date
EP2378236A3 (fr) 2014-06-04
DE102010015047B4 (de) 2012-01-12
DE102010015047A1 (de) 2011-10-20

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