EP0033770B1 - Enveloppe de protection pour un tube de canon - Google Patents

Enveloppe de protection pour un tube de canon Download PDF

Info

Publication number
EP0033770B1
EP0033770B1 EP80107485A EP80107485A EP0033770B1 EP 0033770 B1 EP0033770 B1 EP 0033770B1 EP 80107485 A EP80107485 A EP 80107485A EP 80107485 A EP80107485 A EP 80107485A EP 0033770 B1 EP0033770 B1 EP 0033770B1
Authority
EP
European Patent Office
Prior art keywords
heat
barrel
casing
wall
insulating layer
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
EP80107485A
Other languages
German (de)
English (en)
Other versions
EP0033770A2 (fr
EP0033770A3 (en
Inventor
Karl-Egon Janssen
Heinz-Günter Breuer
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.)
Rheinmetall Industrie AG
Original Assignee
Rheinmetall GmbH
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 Rheinmetall GmbH filed Critical Rheinmetall GmbH
Publication of EP0033770A2 publication Critical patent/EP0033770A2/fr
Publication of EP0033770A3 publication Critical patent/EP0033770A3/de
Application granted granted Critical
Publication of EP0033770B1 publication Critical patent/EP0033770B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/44—Insulation jackets; Protective jackets

Definitions

  • the invention relates to a protective cover for a gun barrel as a tubular jacket arranged around the outer tube wall.
  • a protective cover for a gun barrel as a tubular jacket arranged around the outer tube wall.
  • Such heat protection sleeves made of asbestos or textile material or also as metal tubes surrounding the gun barrel at a distance are e.g. known from DE-B-1918 422.
  • Known casings of this type are intended to keep environmental influences, such as wind, sun or rain, away from the gun barrel and to avoid uneven heating of the barrel when shooting.
  • environmental influences such as wind, sun or rain
  • the air layer in the air gap causes a build-up of heat on the top of the pipe when firing and leads to different pipe wall temperatures on the pipe circumference, which leads to a warping of the pipe and thus to a deterioration in the hit performance.
  • the temperature differences cannot be compensated for, or can only be compensated for, a little in known casings.
  • the invention is therefore based on the object, while avoiding the disadvantages mentioned, to provide a protective cover which can withstand the shot loads and which protects the gun barrel from different temperatures over its circumference both due to environmental influences and due to the heating to the highest temperatures during shooting.
  • a protective cover which can withstand the shot loads and which protects the gun barrel from different temperatures over its circumference both due to environmental influences and due to the heating to the highest temperatures during shooting.
  • an air gap-free connection between the gun barrel and the jacket is to be created.
  • the solution according to the invention consists in that, in the case of a protective cover described in the introduction, a sheath applied to the outer tube wall without an air gap lies firmly on it, in which, starting from the outer tube wall, a first heat-insulating layer and a first heat-insulating layer and then at least one further heat-insulating layer and another one thermally conductive layer follows.
  • This sequence of layers on the one hand provides radial insulation against external influences and, on the other hand, tangential heat conduction and thus a compensation of temperature irregularities still present on the pipe circumference. This prevents heat accumulation.
  • Another object of the invention is to enable easy and inexpensive repair if the jacket is damaged.
  • the sheath can therefore be designed such that the two first-mentioned inner layers form an inner shell which rests firmly on the outer tube wall of the gun and the further layers form an outer shell which can be exchangeably pushed onto the inner shell.
  • the shape of the outer wall of the inner shell and the inner wall of the outer shell, which are adapted to one another, and the use of an elastic insulating material ensure a secure connection of the firm inner shell and the loose outer shell of the protective cover.
  • the first heat-insulating layer consists of one or more, preferably two, layers of a loose ceramic fiber applied to the barrel outer wall with an adhesive, via which a temperature-resistant plastic hose is pushed and then shrunk by the action of heat.
  • the plastic shrink tubing serves to facilitate assembly and increases the durability of the inner jacket.
  • a one-component cement-based adhesive is preferably used for gluing the ceramic fiber only for assembly.
  • Polytetrafluoroethylene was chosen as a suitable plastic for the plastic shrink tube.
  • the plastic tube can be etched on the inside and / or outside in order to achieve a better connection with the adjacent layers due to the roughening of the surface.
  • An outer conical aluminum tube that can be pushed over the first heat-insulating layer and is connected to the heat-insulating layer by a silicone foam layer can serve as the first heat-conducting layer.
  • This tube can be used to bridge production-related shoulders of the gun barrel. It has a flat, slightly conical outer contour over which the replaceable outer jacket can be easily pushed.
  • the silicone foam layer is formed after the conical tube has been pushed onto the first insulating layer in that a two-component silicone foam mass is pumped liquid into the cavity, which foams there to form a closed-pore foam layer. The air is pushed out of the cavity. To make this possible, appropriate air outlet openings must be provided during manufacture.
  • the first heat-conducting layer in the region of a conical part of the gun barrel can be formed by an aluminum wire, preferably pre-stressed, wound on the first heat-insulating layer, the surface of which is covered with an adhesive or a temperature-resistant plastic shrink tube. Since the gun barrel is conical in this area, the surface of the aluminum wire covered with the adhesive is also conical. The adhesive or plastic shrink tubing prevents the outer sheath from popping open and / or detaching from the wire wrapping, so that it can be replaced of the outer jacket remains possible. This embodiment is preferably used in the area of the gun barrel muzzle.
  • a cylindrical aluminum tube with a conical inner wall lining made of silicone foam is preferably used as the second heat-insulating layer as the second heat-conducting layer.
  • the taper of the inner wall lining is adapted to the taper of the aluminum tube or the aluminum wire or the plastic shrink tube of the first heat-conducting layer. This creates a positive connection between the inner and outer jacket.
  • the inner wall lining of the cylindrical tube is applied to the conical tube using an auxiliary device before it is pushed over it.
  • the casing can extend over the entire length of the tube or can be divided into several parts in its longitudinal direction.
  • the exchangeable outer casing of the protective cover can be fastened using screw rings, provided that there is no contact surface on the pipe, due to the construction, on the pipe lugs.
  • a particularly good attachment of the jacket to the gun barrel is achieved by the conical aluminum barrel being supported on the one hand against an annular surface of the gun barrel guide bushing or a screw ring in front of it, and on the other hand against an annular surface of the smoke extractor. It is not necessary to support the inner jacket because it lies firmly on the pipe, e.g. through the elastic plastic shrink tube or the pre-tensioned wire.
  • FIGS 1 and 2 show:
  • wire with a round cross-section shown instead of the wire with a round cross-section shown, one with a different cross-section, e.g. be used with a square cross section, which avoids air gaps even better.
  • the new jacket can breathe in the tube when shooting and withstands the accelerations of the shot.
  • the layer lying directly on the gun barrel must consist of loose material of low specific weight, which is held elastically around the barrel by the plastic hose.
  • Such an elastic holder also results from the prestressed wire winding for the first heat-conducting layer.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Insulation (AREA)
  • Laminated Bodies (AREA)
  • Nozzles (AREA)

Claims (8)

1. Enveloppe de protection pour un tube de canon (1) constituée per un revêtement tubulaire entourant la paroi extérieure du canon, caractérisée par un revêtement (11, 12) disposé sur la paroi extérieure du tube sans intervalle d'air et fixée sur elle, dans lequel, à partir de la paroi extérieure du tube, une première couche calorifuge (2 à 5) est suivie par une première couche thermoconductrice (6, 7), puis par au moins une autre couche calorifuge (9) et une couche thermoconductrice (10).
2. Enveloppe selon la revendication 1, caractérisée en ce que les deux premières couches citées forment un revêtement interne (12) reposant sur la paroi extérieure du tube et les autres couches forment un revêtement externe (11) que l'on peut enfiler de façon amovible sur la gaine intérieure.
3. Enveloppe selon la revendication 1 ou 2, caractérisée par une première couche calorifuge comprenant une ou plusieurs, de préférence deux épaisseurs d'une fibre céramique (3) appliquée sur la paroi extérieure du tube au moyen d'un adhésif (2), sur laquelle on enfile un tube de matière plastique (4) thermiquement stable, que l'on contracte ensuite par l'action de la chaleur.
4. Enveloppe selon l'une des revendications 1 à 3, caractérisée par un tube d'aluminium (6) extérieurement conique placé sur la première couche calorifuge constituant la première couche thermoconductrice, qui est relié sans intervalle d'air à la couche calorifuge par une couche de mousse silicone (5).
5. Enveloppe selon l'une des revendications 1 à 3, caractérisée par un fil d'aluminium (7) enroulé sur la première couche calorifuge dans la zone de la partie conique du tube de canon, de préférence avec précontrainte, constituant la première couche thermoconductrice, dont la surface est recouverte d'un adhésif (8) ou d'un tube en matière plastique stable contractable à la chaleur.
6. Enveloppe selon l'une des revendications 1 à 5, caractérisée par un tube d'aluminium cylindrique (10) constituant la seconde couche thermoconductrice, comportant un revêtement de paroi interne (9) en mousse silicone constituant la seconde couche calorifuge, la conicité du revêtement interne (9) correspondant à la conicité du tube d'aluminium (6) ou du fil d'aluminium (7) de la première couche thermoconductrice.
7. Enveloppe selon l'une des revendications 1 à 6, caractérisée par sa subdivision en une partie postérieure entre la douille de guidage du tube de canon (3) et l'aspirateur de fumée (14) et une partie antérieure entre l'aspirateur de fumée et l'embouchure du tube.
8. Enveloppe selon l'une des revendications 1 à 7, caractérisée par le positionnement du revêtement externe (11) entre des sailles du tube, par exemple d'une part contre une surface annulaire de la douille de guidage du tube de canon (13), d'autre part contre une surface annulaire de l'aspirateur de fumée (14).
EP80107485A 1980-02-12 1980-11-29 Enveloppe de protection pour un tube de canon Expired EP0033770B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3005117 1980-02-12
DE19803005117 DE3005117A1 (de) 1980-02-12 1980-02-12 Schutzhuelle fuer ein geschuetzrohr

Publications (3)

Publication Number Publication Date
EP0033770A2 EP0033770A2 (fr) 1981-08-19
EP0033770A3 EP0033770A3 (en) 1981-11-11
EP0033770B1 true EP0033770B1 (fr) 1984-02-15

Family

ID=6094364

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80107485A Expired EP0033770B1 (fr) 1980-02-12 1980-11-29 Enveloppe de protection pour un tube de canon

Country Status (3)

Country Link
US (1) US4424734A (fr)
EP (1) EP0033770B1 (fr)
DE (1) DE3005117A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014087401A1 (fr) * 2012-12-09 2014-06-12 D.G.L. Us Ltd. Enveloppe de protection thermique

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3219124C2 (de) * 1982-05-21 1984-04-19 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Waffenrohr mit Schutzmitteln gegen Rohrverzug
JPS5944597A (ja) * 1982-09-07 1984-03-13 株式会社富士電機総合研究所 ヒ−トパイプを備える砲身
US4774872A (en) * 1983-06-21 1988-10-04 Ga Technologies Inc. Prestressed tube and tube joint
US4624173A (en) * 1983-06-21 1986-11-25 Ga Technologies Inc. Rail gun barrel assembly
US4840200A (en) * 1983-06-21 1989-06-20 General Atomics Prestressed tube
US4681016A (en) * 1984-05-02 1987-07-21 Ga Technologies Inc. Rail gun barrel with gas containment means
EP0183432B1 (fr) * 1984-11-26 1989-01-25 Vickers Plc Couverture d'isolation thermique pour canons
US4843946A (en) * 1984-11-27 1989-07-04 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defense Of Her Majesty's Canadian Government Filament-wound venturi
US4681015A (en) * 1985-07-17 1987-07-21 Ga Technologies Inc. Rail gun barrel with axially prestressed insulators
DE3639866A1 (de) * 1986-11-21 1988-06-01 Battelle Institut E V Waffenrohr eines kampfpanzers
US4841836A (en) * 1987-11-02 1989-06-27 Bundy Mark L Thermal shroud for a gun tube
US9435600B2 (en) * 2013-10-15 2016-09-06 Oss Suppressors Llc Thermal mirage reduction accessory for firearms
DE19904417C2 (de) 1999-02-04 2002-01-03 Rheinmetall W & M Gmbh Waffenrohr
US6789454B2 (en) * 2002-10-16 2004-09-14 Rescue Academy Inc. Gun barrel for launching large projectiles
US7182014B2 (en) 2002-10-16 2007-02-27 Rescue Academy Inc. Gun barrel for launching projectiles
DE102007053949A1 (de) 2007-11-09 2009-05-14 Rheinmetall Waffe Munition Gmbh Wärmeschutzhülle für ein Waffenrohr
TWM348936U (en) * 2008-09-03 2009-01-11 Gan Yao Guo Paint ball gun
US8375617B2 (en) 2009-08-18 2013-02-19 Nemo Equipment, Inc. Weapon protection device
US20110041376A1 (en) * 2009-08-18 2011-02-24 Nemo Equipment, Inc. Weapon protection device
DE102010031898A1 (de) 2010-07-21 2012-01-26 Rheinmetall Air Defence Ag Fernsteuerbares Geschütz
WO2012011934A1 (fr) 2010-07-23 2012-01-26 Ut-Battelle, Llc Refroidissement des armes avec de la mousse de graphite
US8701639B2 (en) * 2011-04-14 2014-04-22 George Arthur Proulx Open railgun with steel barrel sections
DE102011106199B3 (de) 2011-06-07 2012-08-30 Rheinmetall Air Defence Ag Vorrichtung und Verfahren zur Thermalkompensation eines Waffenrohres
US10386146B2 (en) * 2016-02-22 2019-08-20 Radical Firearms, LLC Handguard and barrel assembly with sound suppressor for a firearm
CN105889648B (zh) * 2016-06-07 2018-08-28 天津市管道工程集团有限公司 直埋蒸汽保温管
US11385013B2 (en) 2016-07-01 2022-07-12 Blackpowder Products, Inc. Hybrid carbon—steel firearm barrel
US10066890B1 (en) * 2017-04-27 2018-09-04 Darryl S. Lee Firearm suppressor adapter
US11022396B2 (en) * 2019-08-18 2021-06-01 Superior Harmonics LLC Rifle barrel vibration dampener and method of use
USD1018757S1 (en) 2020-09-17 2024-03-19 Blackpowder Products, Inc. Firearm barrel

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
GB133091A (fr) * 1900-01-01
DE83953C (fr) * 1894-11-30 1895-12-06
DE1918422A1 (de) * 1969-04-11 1970-10-15 Wegmann & Co Waermeschutzhuelle fuer Kanone
US3742640A (en) * 1971-05-14 1973-07-03 Us Army Composite firearm barrel
DE2917844A1 (de) * 1979-05-03 1980-11-06 Kabel Metallwerke Ghh Aus zwei oder mehreren konzentrischen rohren bestehendes rohrsystem mit thermischer isolierung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014087401A1 (fr) * 2012-12-09 2014-06-12 D.G.L. Us Ltd. Enveloppe de protection thermique

Also Published As

Publication number Publication date
DE3005117A1 (de) 1981-08-20
DE3005117C2 (fr) 1990-08-09
US4424734A (en) 1984-01-10
EP0033770A2 (fr) 1981-08-19
EP0033770A3 (en) 1981-11-11

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