EP2431704A2 - Procédé d'ouverture, de désamorçage et/ou de combustion de bombes ou d'armes contenant de l'explosif ainsi qu'une utilisation de ce procédé - Google Patents

Procédé d'ouverture, de désamorçage et/ou de combustion de bombes ou d'armes contenant de l'explosif ainsi qu'une utilisation de ce procédé Download PDF

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Publication number
EP2431704A2
EP2431704A2 EP11007635A EP11007635A EP2431704A2 EP 2431704 A2 EP2431704 A2 EP 2431704A2 EP 11007635 A EP11007635 A EP 11007635A EP 11007635 A EP11007635 A EP 11007635A EP 2431704 A2 EP2431704 A2 EP 2431704A2
Authority
EP
European Patent Office
Prior art keywords
plasma torch
plasma
opening
bomb
bombs
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
Application number
EP11007635A
Other languages
German (de)
English (en)
Other versions
EP2431704A3 (fr
EP2431704B1 (fr
Inventor
Volker Krink
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.)
Kjellberg Stiftung
Original Assignee
Kjellberg Stiftung
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 Kjellberg Stiftung filed Critical Kjellberg Stiftung
Priority to PL11007635T priority Critical patent/PL2431704T3/pl
Publication of EP2431704A2 publication Critical patent/EP2431704A2/fr
Publication of EP2431704A3 publication Critical patent/EP2431704A3/fr
Application granted granted Critical
Publication of EP2431704B1 publication Critical patent/EP2431704B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
    • F42B33/06—Dismantling fuzes, cartridges, projectiles, missiles, rockets or bombs

Definitions

  • the invention relates to a method for opening, defusing and / or burning explosive-containing bombs or projectiles and a use. It can also be a variety of types on funded and unburned ammunition.
  • the fundmunition is heavily corroded as a result of corrosion of the metal housing and the attached thereto Ignition devices are also in a desolate condition, so that they can not be dismantled from a bomb then safely. Attempts have therefore been made to open the metal housing of bombs or projectiles at the site. For this purpose, the water jet cutting was used, which actually seems suitable because no high temperatures occur. However, it has been found that the time required, in particular in the case of the relatively thick metal housings of bombs, is too great and it can not be avoided to introduce vibrations or oscillations into the bomb or a projectile which can cause a triggering of the ignition device.
  • At least one plasma torch is used when opening the metal housing of a bomb or a projectile.
  • temperatures in the plasma jet of a plasma torch can prevail at temperatures of up to 30,000 ° C.
  • an opening of the metal housing can take place without the contained explosive being able to develop its explosive effect in a dangerous form.
  • Just these high temperatures make it possible to form a sufficiently large opening in the metal housing in a very short time, which has a free cross-section, in which a pressure compensation, which occurs by a chemical reaction of the explosive, can be achieved.
  • the chemical reaction can not be explosive, but much slower and the explosive can be flamed or simply burned / burned out.
  • a plasma torch can also be used in bombs or projectiles, in which only explosives remain in the metal housing.
  • a thickness determination of the housing of a bomb or bullet should be made. This can be done on the basis of ammunition data sheets. In this case, the respective bomb or a projectile or any other type of ammunition is taken, what can also be done by video technology and then the corresponding data of the type determined in this way can be taken from the respective ammunition data sheet. A thickness determination can also be made by ultrasonic thickness measurement. With the determined thickness then the one or more plasma torches can be operated in a suitable manner. This relates to the operating parameters and it may also be the size and position of trainees openings to be chosen accordingly.
  • one or more plasma torches with a circular cutting device. This can be remote controlled.
  • One or more plasma torches are arranged eccentrically on the circle cutting device and can be moved along a circular path during cutting. Several plasma torches can be arranged at equal angular distances from each other. For two plasma torches it can be 180 °.
  • the procedure should be such that an opening is formed in the metal housing, which has at least one free open cross section of 100 mm 2 , advantageously at least 100 cm 2 , to allow the desired pressure equalization. This should be achieved in a time ⁇ 10 s, preferably ⁇ 6 s. Of course, an opening with a larger free cross section can be formed in a correspondingly short time in the metal housing.
  • the plasma torch is moved accordingly. It can be moved translationally and / or pivoted, so that the position is hit by the plasma jet on the metal housing is changed. However, it should be done so that a completely through the wall of the metal housing opening is trained.
  • One or more apertures to be formed may be formed with a size that may be selected as an explosive depending on the size of the entire envelope surface of a bomb or projectile.
  • a size in the range of 1/4 to 1/1000, preferably 1 ⁇ 2 to 1/100 of the lateral surface can be cut out.
  • a discharge opening for a possible pressure equalization through the housing can be formed.
  • Cut-out housing parts can be removed or otherwise removed with suitable manipulators.
  • magnets or elements working with negative pressure can be used.
  • a plasma torch can be guided by a robot and preferably be remotely controlled. In this case, it is convenient to use a video camera for manual remote control. Plasma torches and / or robots can be controlled.
  • a shield can be used around or over the bomb or a projectile in order to reduce the risk of an undesired explosion.
  • a shield can be used around or over the bomb or a projectile in order to reduce the risk of an undesired explosion.
  • can thick-walled conical steel body are used, which can be placed next to and / or on each other.
  • Plasma torches in particular suitable for cutting, can be used in the invention.
  • These can also be those in which an electrode is arranged directly on the plasma burner and the workpiece, here in the specific case that is a bomb or a projectile is electrically connected so that it forms the second electrode for plasma formation.
  • plasma torch with indirect operation or designed for cutting electrically non-conductive workpieces plasma torch with an arranged between a nozzle and a bomb or a projectile outside the nozzle of the plasma torch, can be inserted into the plasma jet Additional electrode, to be preferred.
  • a trained for cutting electrically non-conductive workpieces plasma torch is in DE 10 2005 039 070 A1 and it is referred to their disclosure content fully. Such a trained plasma torch can be used in the invention.
  • Plasma is a thermally highly heated electrically conductive gas, which consists of positive and negative ions, electrons and excited and neutral atoms and molecules.
  • plasma gas are different gases, eg. As the monatomic argon and / or the diatomic gases hydrogen, nitrogen, oxygen or air used. These gases ionize and dissociate through the energy of the plasma arc.
  • the plasma jet can be greatly influenced in its parameters by the design of the nozzle and electrode. These parameters of the plasma jet are e.g. the beam diameter, the temperature, energy density and the flow velocity of the gas. This allows a good adaptation to be achieved in the method according to the invention, as may be required, for example, in the different bombs or projectiles. Especially with bombs, the different types and the different metal housing can be considered with their thicknesses and materials.
  • Plasma torches in which a secondary gas is used in addition to the plasma gas can be used in the invention.
  • the secondary gas can thereby be enveloped by a correspondingly designed nozzle design of a plasma torch plasma jet, in the direction of bomb or projectile surface, for example as a ring beam directed.
  • a plasma cutting torch is used as a plasma torch.
  • the electrical current density of the plasma arc which is constricted by means of the nozzle of the plasma torch, should be at least 30 A / mm 2 , preferably at least 50 A / mm 2 , in the nozzle bore.
  • plasma and / or secondary gas air, nitrogen, oxygen or a gas mixture formed with these gases can be used.
  • the plasma burner should be operated with an electrical cutting current of at least 200 A and / or maintain a cutting speed of at least 3 m / min with a metal casing thickness of a bomb or bullet of 12 mm.
  • an opening with a diameter of 10 cm * 10 cm can be cut in about 8 s.
  • an opening with a diameter of about 13 cm can be cut through the metal housing.
  • the cutting speed can be increased to more than 4 m / min with a metal housing thickness of 12 mm.
  • the time for cutting the opening can be shortened to approx. 6 s.
  • the required time can be reduced to 3 s.
  • Two plasma torches can be arranged offset by 180 ° to each other, while also being rotated about an axis of rotation disposed between the plasma torches.
  • Two or more than two plasma torches can also be moved independently with suitable manipulators and then an opening or so it can be cut out several openings at the same time. As a result, one or more openings with correspondingly larger free cross-section in the metal housing at the same time as when using a plasma torch are formed.
  • the contained explosive After one or more sufficiently large opening (s) have been formed in the housing and until then the contained explosive does not burn, it can be ignited with a plasma torch and then burned. The burning takes place in these cases, as is already known when burning explosives in open channels. If an ignition device is still present when the explosive is burned, its ignition takes place at a time when there is a sufficiently large opening in the housing, so that the effect is considerably reduced due to missing or greatly reduced damming and the residual effect is negligible. An uncontrolled detonation can be avoided.
  • the invention can be carried out directly at a locality.
  • the figure shows an arrangement for direct plasma cutting on a bomb 4.
  • the plasma torch 2 is connected via the electrical connection lines 5.1 and 5.2 to an electrical power source 1.
  • the bomb 4 is connected to the electrical power source 1 via the electrical connection line 5.3.
  • the gas supply takes place from the gas supply 6 to the plasma burner 2 via the gas lines 5.4 and 5.5.
  • the plasma torch 2 has a burner head with a beam generating system. At the burner head, an electrode 2.1, a nozzle 2.2, a gas supply 2.3 and a burner body are present. In the burner body, the feeds of the media (eg gas, coolant, electric power) are realized and the gun system available. In addition, a cap 2.4, which is designed for the supply of a secondary medium, for example secondary gas, can be present around the nozzle 2.2 of the plasma burner 2.
  • a secondary medium for example secondary gas
  • the electrode 2.1 in the plasma torch 2 is a non-consumable electrode consisting essentially of a high temperature resistant material, e.g. Tungsten, zirconium or hafnium is formed, thereby achieving a long life.
  • the nozzle 2.2 is made of copper and constricts the formed plasma jet 3 a.
  • the electric current flow for cutting takes place from the electric current source 1 to the plasma burner 2, via the plasma jet 3 to the metal housing of the bomb 4 and from there back to the electric current source 1.
  • a pilot arc between the electrode connected as cathode 2.1 and the nozzle 2.2 is first ignited with a small electrical current in the range 10 A to 30 A and thereby burns with a correspondingly low power. In this case, a high electrical voltage is selected.
  • the low-energy pilot arc causes a partial ionization between the plasma torch 2 and the metal housing of the bomb 4 and thus prepares the formation of the cutting arc.
  • the cutting arc is then formed between the electrode 2.1 and the metal housing of the bomb 4 with a significantly higher electrical current of at least 200 A.
  • the metal housing can thus be cut at a high feed rate of 3 m / min and formed in a time of about 6 s a sufficiently large opening with free cross section, which prevents possible ignition and exploding of the contained explosive by the high heat, so that Explosives can be burned out without exploding.
  • FIG. 2 shows an arrangement for indirect plasma cutting. It flows in contrast to the example after FIG. 1 the electric current not via the metal housing of the bomb 4, but from the nozzle 2.2 to the electric power source 1 back. At the nozzle 2.2, a second electrode is then present or the nozzle 2.2 forms the second electrode. In this example, advantageously no electrical connection to the bomb 4 is required, which may be problematic due to corrosion of the metal housing. Incidentally, in this example, analogously to the example FIG. 1 to be worked. The ionization takes place between electrode 2.1 and nozzle 2.2.
  • FIG. 3 an example of plasma cutting is shown, in which outside of the nozzle 2.2 of the plasma torch 2 in the plasma jet 3, an additional electrode 7, for example a wire, which tracked by means of the wire drum 8, can be introduced.
  • the basic structure and the function are in DE 10 2005 039 070 A1 described. Again, no electrical connection to the bomb 4 is required to work according to the invention.
  • FIG. 4 an arrangement with a guided plasma torch 2 is shown.
  • the plasma torch 2 is held with a holder 10.1 at a distance from the axis of rotation 10.
  • the plasma torch 2 is rotated by 360 ° about the axis of rotation.
  • the lines 5 for electricity, gas and coolant to the plasma torch 2 are flexible.
  • FIG. 5 an example is shown with two plasma torches 2, which are arranged together in the holder 10.1 each at a distance from the axis of rotation 10 and are rotated to cut an opening in the metal housing of the bomb 4 about the axis of rotation.
  • a rotation of 180 ° is sufficient for the cutout.
  • the required time can be shortened.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Arc Welding In General (AREA)
  • Plasma Technology (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
EP11007635.3A 2010-09-20 2011-09-20 Procédé d'ouverture, de désamorçage et/ou de combustion de bombes ou d'armes contenant de l'explosif Not-in-force EP2431704B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11007635T PL2431704T3 (pl) 2010-09-20 2011-09-20 Sposób otwierania, rozbrajania i/lub spalania zawierających materiał wybuchowy bomb lub pocisków

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010046308A DE102010046308B3 (de) 2010-09-20 2010-09-20 Verfahren zum Öffnen, Entschärfen und/oder Ausbrennen von Sprengstoff enthaltenden Bomben oder Geschossen sowie eine Verwendung

Publications (3)

Publication Number Publication Date
EP2431704A2 true EP2431704A2 (fr) 2012-03-21
EP2431704A3 EP2431704A3 (fr) 2012-07-04
EP2431704B1 EP2431704B1 (fr) 2013-07-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11007635.3A Not-in-force EP2431704B1 (fr) 2010-09-20 2011-09-20 Procédé d'ouverture, de désamorçage et/ou de combustion de bombes ou d'armes contenant de l'explosif

Country Status (3)

Country Link
EP (1) EP2431704B1 (fr)
DE (1) DE102010046308B3 (fr)
PL (1) PL2431704T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2524830C1 (ru) * 2013-05-13 2014-08-10 Общество С Ограниченной Ответственностью "Плазариум" Способ расснаряжения боеприпасов
CN113799676A (zh) * 2021-10-12 2021-12-17 山东科技大学 一种液氮辅助冷却式水切割防爆车
CN113932676A (zh) * 2021-11-03 2022-01-14 江苏军智增材航空科技有限公司 等离子弧高温消音式弹壳底火销毁设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005039070A1 (de) 2005-08-08 2007-02-22 Kjellberg Finsterwalde Elektroden Und Maschinen Gmbh Vorrichtung und Verfahren zum Plasmaschneiden von Werkstücken
DE60318298T2 (de) 2002-01-08 2008-12-11 Sidney Christopher Corsham Alford Vorrichtung zum zerstören von explosivmitteln

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4221666C1 (de) * 1992-07-02 1994-01-27 Alba Ind & Umweltschutzservice Verfahren zum Öffnen von explosivstoffhaltigen Körpern
DE20022489U1 (de) * 2000-03-22 2001-11-08 ANT AG, 23560 Lübeck Vorrichtung zum Manipulieren, Zertrennen und Aufschneiden von Gefahrgut
US6559413B1 (en) * 2001-11-28 2003-05-06 The Regents Of The University Of California Method for laser machining explosives and ordnance
US7331268B1 (en) * 2004-06-02 2008-02-19 The United States Of America As Represented By The Secretary Of The Navy Explosive neutralization method and device
DE102007018137B3 (de) * 2007-04-16 2008-10-30 Rheinmetall Landsysteme Gmbh Neutralisierungsverfahren für Sprengkörper und Vorrichtung zur Durchführung des Verfahrens

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60318298T2 (de) 2002-01-08 2008-12-11 Sidney Christopher Corsham Alford Vorrichtung zum zerstören von explosivmitteln
DE102005039070A1 (de) 2005-08-08 2007-02-22 Kjellberg Finsterwalde Elektroden Und Maschinen Gmbh Vorrichtung und Verfahren zum Plasmaschneiden von Werkstücken

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2524830C1 (ru) * 2013-05-13 2014-08-10 Общество С Ограниченной Ответственностью "Плазариум" Способ расснаряжения боеприпасов
CN113799676A (zh) * 2021-10-12 2021-12-17 山东科技大学 一种液氮辅助冷却式水切割防爆车
CN113799676B (zh) * 2021-10-12 2022-07-15 山东科技大学 一种液氮辅助冷却式水切割防爆车
CN113932676A (zh) * 2021-11-03 2022-01-14 江苏军智增材航空科技有限公司 等离子弧高温消音式弹壳底火销毁设备

Also Published As

Publication number Publication date
PL2431704T3 (pl) 2014-01-31
EP2431704A3 (fr) 2012-07-04
EP2431704B1 (fr) 2013-07-10
DE102010046308B3 (de) 2012-03-08

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