EP0461336A2 - Procédé de réalisation d'une chambre de compression résistante à des détonations intérieures, et chambre de compression réalisée par ce procédé - Google Patents

Procédé de réalisation d'une chambre de compression résistante à des détonations intérieures, et chambre de compression réalisée par ce procédé Download PDF

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Publication number
EP0461336A2
EP0461336A2 EP91100036A EP91100036A EP0461336A2 EP 0461336 A2 EP0461336 A2 EP 0461336A2 EP 91100036 A EP91100036 A EP 91100036A EP 91100036 A EP91100036 A EP 91100036A EP 0461336 A2 EP0461336 A2 EP 0461336A2
Authority
EP
European Patent Office
Prior art keywords
pressure chamber
joints
jacket
folds
sheets
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Withdrawn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
EP91100036A
Other languages
German (de)
English (en)
Other versions
EP0461336A3 (fr
Inventor
Johnny Ohlson
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.)
DYNASAFE AB
Original Assignee
Dynasafe AB
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 Dynasafe AB filed Critical Dynasafe AB
Publication of EP0461336A2 publication Critical patent/EP0461336A2/fr
Publication of EP0461336A3 publication Critical patent/EP0461336A3/xx
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D5/00—Safety arrangements
    • F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
    • F42D5/045—Detonation-wave absorbing or damping means

Definitions

  • the present invention relates both to a method for producing pressure chambers constructed from elements with the ability to withstand the force of an explosive charge detonating inside the chamber when assembled, and to the pressure chamber produced by the method described.
  • a triggering device controlled by the change in air pressure e.g. detonating an explosive charge after a certain drop in pressure, i.e. when the aircraft has reached a certain altitude, is likely to be a relatively simple construction task. Finding such an explosive charge in a large quantity of goods, on the other hand, creates considerably more difficulties, especially since such an explosive charge hardly needs to have larger dimensions than a normal novel.
  • Such a pressure chamber has to meet, among other things, the requirements to withstand partial negative pressure corresponding to at least normal flight heights and partial excess pressure due to an internal detonation of such strength that it could explode an aircraft from the inside. This means that only a combined vacuum / pressure chamber can meet these requirements.
  • Hyperbaric chambers i.e. rooms resistant to internal detonations, have so far been built almost without exception as earth bunkers, but in recent years much more practical metal structures with very promising properties have also been developed.
  • Hyperbaric chambers made of metal are precisely calculated, welded shell constructions. However, the satisfactory function of such constructions presupposes that all welding work is carried out and checked with the highest degree of accuracy and care. Since a vacuum / pressure chamber must be able to hold fully loaded air freight containers, normally net pack pallets of the same cross-section as the fuselage, for the described purpose, the vacuum / pressure chamber has considerable dimensions. This in turn means that the transport of a finished vacuum / pressure chamber from the place of manufacture to the intended air freight terminal can be very difficult, while on the other hand a partial implementation of the necessary qualified welding work on site greatly increases the assembly time.
  • the present invention relates to a method for producing pressure chambers with the ability to withstand the force of an explosive charge detonating inside the chamber, wherein the production at the place of manufacture can comprise relatively small elements, based on the overall dimensions of the finished pressure chamber, which can then be carried out at the installation site without any welding work can be assembled into a finished pressure chamber.
  • the finished pressure chamber is also part of the invention.
  • the type of pressure chamber in question must not only meet the requirements with regard to resistance to both negative pressure and internal detonations, but must also withstand strong vibration stresses, since it can be expected that vibration tests with negative pressure will also be included in the scope of the test in the future.
  • the present invention thus relates to a method for producing pressure chambers constructed from elements and to the pressure chamber produced by this method, which resists internal detonations and can be built in a factory in such a way that no welding work is required at the installation site.
  • the pressure chamber is of a known configuration with a cylindrical shape and transversely closing, stably reinforced and fully or partially openable end walls.
  • the process for producing the pressure chamber according to the invention and the finished pressure chamber are characterized in that the cylindrical part of the pressure chamber is constructed from bent plates or jacket sheets adapted to the desired shape of the chamber.
  • the jacket sheets are joined together in the longitudinal and transverse directions in a special way and are connected to one another by connecting yokes which are arranged lengthwise with and above the respective joints and are laid in the longitudinal direction of the joints.
  • the connecting yokes are provided with two longitudinal, angularly opposing clamping surfaces. The assembly is carried out in such a way that these clamping surfaces against the first rabbet surface running along the joint edges and forming an acute angle with the adjacent broad side of the casing sheets, issue.
  • a tight fit between these first fold surfaces or fold backsides and the clamping surfaces is achieved by inserting intermediate pieces between the fold front surfaces of the jacket sheets forming the joint edge and tightening them with screws on the connecting yokes, thereby exerting a wedge effect on the jacket sheets when the screws are tightened apart.
  • the intermediate pieces and preferably also the front surfaces of the folds of the jacket sheets are designed with oblique flanks; preferably, the intermediate piece to be inserted from the opposite side of the connecting yoke has a trapezoidal cross section.
  • the dovetail groove of the connecting yoke has its smallest width on the side facing the casing sheets, and this smallest width is so matched to the greatest width of the flanges of the pushed-together casing sheets that the connecting yoke can only be pushed over the folds as long as the intermediate piece is not inserted .
  • the joint edges of the cladding sheets are first arranged close to one another, the connecting yoke is placed on top and then the cladding sheets are pushed apart again, to the extent that the intermediate piece is inserted between the joint edges from the side opposite the connecting yoke and then with screws in Connection yoke can be attached.
  • the screws By tightening the screws, i.e. by forcing the intermediate piece closer and closer to the connecting yoke, the joint edges of the cladding sheets are simultaneously pushed apart by a wedge effect, so that by gradually tightening the evenly distributed screws along the joint, possibly supplemented with a suitable sealing compound or gasket , receives a tight joint.
  • the combined joint receives a dovetail-shaped cross-section which cannot diverge as long as the intermediate piece is in its installed position between the joint edges of the casing sheets.
  • Advantageous features of the invention are also the end wall parts with their openings, which are manufactured in the factory, at least one shorter, complete jacket piece, ie with a full circumference, being welded to the end wall part. This complete jacket piece is provided on the end side with corresponding folds as with the other jacket sheets, and as a result the end wall parts can then be easily connected to the cylindrical part constructed from assembled jacket sheets.
  • the cylindrical part of the pressure chamber is advantageously carried out in a two-shell construction, and then the folds and connecting yokes are advantageously directed towards the inside of the chamber, with the smoothest possible inside and outside surfaces being obtained with appropriately dimensioned intermediate pieces.
  • the outer shell can be dimensioned for the absorption of pressures and tensile forces, while the inner shell, which in this case does not have to be firmly connected to the end wall parts, is dimensioned for the absorption of any detonation forces and consequently one represents inner protection for the outer shell.
  • the end wall parts with the fixed, cylindrical connecting pieces for the connection of the cladding sheets are thus largest separate units, while the other parts consist of cladding sheets or plates, each of which can be found, for example, over the half the circumference of the cylindrical part, but only extend over a part of its length, and from connecting yokes, intermediate pieces, screws, sealing compound and any interior equipment such as goods handling equipment.
  • the end wall parts are also provided with doors, for example in the form of gas-tight sliding doors, these can be delivered separately.
  • the individual images are drawn on different scales depending on the need for individual representation.
  • a pressure chamber as shown in Figure 1 comprises two Factory-made end wall parts 1 and 2.
  • the figure shows an openable door 3 for end wall part 1.
  • Both the front wall part and the door and door frame are, as can be seen from the illustration, strongly reinforced.
  • the two end wall parts also each have a shorter, cylindrical connecting part 4 and 5.
  • three cylinder sections 6, 7 and 8 lie between the end wall parts, each consisting of two bulbous sheets 6a, 6b, 7a, 7b and 8a, 8b joined together by longitudinal joints 6c, 6d, 7c, 7d and 8c, 8d , whereby in Figure 1 the c-longitudinal joints are visible and the other joints are covered.
  • These three cylinder sections are connected to one another via the transverse joints 9 and 10 and thereby form a cylindrical part of the pressure chamber to which the end wall parts are fastened via the transverse joints 11 and 12.
  • FIG. 2 and 3 and 8, 9 and 10 an optional embodiment with sliding door is shown.
  • the pressure chamber has the reference number 13.
  • guide rails 14 and 15 and a sliding door 16 which can be displaced in the longitudinal direction of the rail by means of a ball screw are arranged.
  • the opening position of the sliding door is shown in Fig. 2 by the broken line 16a.
  • the guide rails 14 and 15, as indicated in Figure 10 and there designated 15a are designed with a wedge-shaped taper in the front area along the pressure chamber front.
  • the sliding door 16 rests on a lower ball bushing and is guided on the upper edge in longitudinal linear elements.
  • the sliding door 16 has a hook-shaped end 20 which extends over the entire part of the rear edge, which neither in the guide rails 14 and 15 nor in the closed position of the sliding door in the groove formed between the sheets 17 and 18 lies.
  • This hook-shaped closure encompasses an extension 17a of the sheet 17 in the closed position of the sliding door, as can be seen in FIG. 9. This results in a maximally stable fastening on all edges of the sliding door along the guide rails 14 and 15, between the sheets 17 and 18 and on the hook-shaped end 20 behind the extension 17a of the sheet 17.
  • the inflatable sealing strip 19 running around the inside of the entire sliding door ensures gas tightness.
  • the joints can advantageously be arranged along the markings 39-40.
  • these joints primarily concern the jacket sheets of the end wall part, ie the cylindrical part of the end wall part.
  • the guide rails 14 and 15 are then expediently designed to be removable.
  • the sliding door can also be divided into smaller parts, for example along a central joint. It is clear that this simplifies the transport of the individual parts, since, for example, certain maximum dimensions for the load are specified for trucks.
  • Fig. 4 From the cross section of the pressure chamber shown in Fig. 4 it can be seen that it consists of an outer jacket 21 which is made up of two jacket plates 21a and 21b which are connected to one another via two joints or joints 22a and 22b.
  • Figure 6 shows the joint 22a in a partially enlarged cross section.
  • the pressure chamber also includes an inner jacket 23 with the jacket plates 23a and 23b, which are connected to one another via two joints or joints 24a and 24b, only joint 24a being shown in the figure. Fugue 24a is also shown on a larger scale in Fig. 7.
  • the joints or joints 22a and 22b or 24a and 24b are longitudinal joints. With the exception of the arch-shaped instead of the straight joint parts, the transverse joints are identical to the longitudinal joints. Since the joint 24a is shown in Fig. 7 at the intersection between an inner longitudinal joint and an outer transverse joint, parts of the transverse joint are also shown in this figure.
  • the joint 22a shown in cross section in FIG. 6 lies between the two cladding sheets 21a and 21b.
  • Each of the cladding plates has a fold on the joint side which is directed towards the pressure chamber and is designated 25 or 26. These two folds each have a first fold edge 25a or 26a directed towards the broad side of the respective cladding plate (i.e. in the assembled state are directed away from each other). These first fold edges form acute angles to the wide side 21a 'or 21b' of their respective cladding sheet.
  • the folds also each have a second fold edge 25b or 26b, which in the assembled state are directed towards one another and form obtuse angles to the wide side 21a 'or 21b' of their respective casing sheet. These second fold edges coincide with the outer, mutually facing joint edges of the casing sheets. Together, the joints with the folded edges have a dovetail cross-section.
  • a connecting yoke 27 is attached above the two folds and has a groove 28 with a dovetail cross section and with two clamping edges 28a and 28b directed towards one another, the latter abutting against the fold edges 25a and 26a.
  • the groove 28 has a minimum width such that the connecting yoke 27 can be guided over the folds 25 and 26 when the two jacket plates 21a and 21b are pushed together as closely as possible, after which the jacket plates are pushed apart until the first fold edges 25a and 26a against the tensioning edges 28a and 28b are present.
  • An intermediate piece 29 with a trapezoidal cross-section and with the edge sides 29a and 29b is then arranged between the second folded edges 25b and 26b, i.e.
  • This intermediate piece 29 is fastened in the connecting yoke 27 with screws 30 arranged in a uniform division. By tightening the screws 30 a very tight and high-strength connection is obtained, since the intermediate piece 29 due to the wedge action between its own edge sides 29a and 29b on the one hand and between the second fold edges 25b and 26b on the other hand, the folds with high force against the clamping edges 28a and 28b Connection yoke 27 presses.
  • the inner sheet 23a is also indicated in Figure 6.
  • the folds 25 and 26 are designed as separate parts, which only have a narrow jacket sheet edge and are welded to smooth-surface sheets with a double V-seam. This work is carried out at the factory.
  • Figure 7 shows the corresponding inner joint with the inner cladding sheets 23a and 23b, the folds 31 and 32 with the respective first fold edges 31a and 32a and the corresponding second fold edges 31b and 32b, the connecting yoke 33 with the clamping edges 33a and 33b and the intermediate piece 34 and the screw 35.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
EP91100036A 1990-06-12 1991-01-02 Procédé de réalisation d'une chambre de compression résistante à des détonations intérieures, et chambre de compression réalisée par ce procédé Withdrawn EP0461336A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9002080A SE465482B (sv) 1990-06-12 1990-06-12 Saett att framstaella monteringsbara tryckkammare med foermaagan att uppta invaendiga detonationer samt i enlighet daermed framstaellda tryckkammare
SE9002080 1990-06-12

Publications (2)

Publication Number Publication Date
EP0461336A2 true EP0461336A2 (fr) 1991-12-18
EP0461336A3 EP0461336A3 (fr) 1994-03-09

Family

ID=20379738

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91100036A Withdrawn EP0461336A2 (fr) 1990-06-12 1991-01-02 Procédé de réalisation d'une chambre de compression résistante à des détonations intérieures, et chambre de compression réalisée par ce procédé

Country Status (2)

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EP (1) EP0461336A2 (fr)
SE (1) SE465482B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102575846A (zh) * 2009-08-21 2012-07-11 区域清除服务瑞典有限公司 用于火箭发动机的安全毁灭的密闭容器装置
EP2950036A1 (fr) * 2014-05-28 2015-12-02 Dynasafe Protection Systems AB Récipient résistant aux explosions
JP2017058094A (ja) * 2015-09-18 2017-03-23 株式会社神戸製鋼所 耐爆容器
CN108871093A (zh) * 2018-07-20 2018-11-23 陈可晴 一种实弹训练用防弹墙体

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE529754C2 (sv) * 2006-03-16 2007-11-13 Olcon Engineering Ab Destruktionskammare med utbytbart inre splitterskydd i form av ett stort antal, med varandra till en enhet kombinerade, var för sig lätthanterliga segment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1125070A (en) * 1913-08-14 1915-01-19 Olin W Daviee Silo.
DE1575260A1 (de) * 1966-04-19 1970-01-22 Rosengrens Plat Ab Blechverbindung
GB2106560A (en) * 1981-09-22 1983-04-13 Bofors Ab A chamber to withstand pressure
US4497148A (en) * 1982-03-22 1985-02-05 Camilo Muebles, Inc. Panel connector system
FR2553810A1 (fr) * 1983-10-20 1985-04-26 Bofors Ab Enceinte cylindrique de confinement d'explosions
GB2152022A (en) * 1984-01-02 1985-07-31 Bofors Ab Linning for detonation chamber

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1125070A (en) * 1913-08-14 1915-01-19 Olin W Daviee Silo.
DE1575260A1 (de) * 1966-04-19 1970-01-22 Rosengrens Plat Ab Blechverbindung
GB2106560A (en) * 1981-09-22 1983-04-13 Bofors Ab A chamber to withstand pressure
US4497148A (en) * 1982-03-22 1985-02-05 Camilo Muebles, Inc. Panel connector system
FR2553810A1 (fr) * 1983-10-20 1985-04-26 Bofors Ab Enceinte cylindrique de confinement d'explosions
GB2152022A (en) * 1984-01-02 1985-07-31 Bofors Ab Linning for detonation chamber

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102575846A (zh) * 2009-08-21 2012-07-11 区域清除服务瑞典有限公司 用于火箭发动机的安全毁灭的密闭容器装置
JP2013502555A (ja) * 2009-08-21 2013-01-24 ダイナセーフ インターナショナル エービー ロケットモーターの安全な破壊のための閉鎖容器装置
US8661960B2 (en) 2009-08-21 2014-03-04 Dynasafe International Ab Closed vessel arrangement for safe destruction of rocket motors
CN102575846B (zh) * 2009-08-21 2014-08-06 戴纳安全国际有限公司 用于火箭发动机的安全毁灭的密闭容器装置
EP2950036A1 (fr) * 2014-05-28 2015-12-02 Dynasafe Protection Systems AB Récipient résistant aux explosions
WO2015180857A1 (fr) * 2014-05-28 2015-12-03 Dynasafe Protection System Ab Conteneur résistant aux explosions
US9784550B2 (en) 2014-05-28 2017-10-10 Dynasafe Protection Systems Ab Blast-resistant container
JP2017058094A (ja) * 2015-09-18 2017-03-23 株式会社神戸製鋼所 耐爆容器
CN108871093A (zh) * 2018-07-20 2018-11-23 陈可晴 一种实弹训练用防弹墙体
CN108871093B (zh) * 2018-07-20 2020-10-27 陈可晴 一种实弹训练用防弹装备

Also Published As

Publication number Publication date
EP0461336A3 (fr) 1994-03-09
SE9002080L (sv) 1991-09-16
SE9002080D0 (sv) 1990-06-12
SE465482B (sv) 1991-09-16

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