EP2436966B1 - Verstärkungsvorrichtung für Sicherheitsbehälter mit Druckgas in einem Industriefilterreinigungssystem - Google Patents

Verstärkungsvorrichtung für Sicherheitsbehälter mit Druckgas in einem Industriefilterreinigungssystem Download PDF

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Publication number
EP2436966B1
EP2436966B1 EP20110181282 EP11181282A EP2436966B1 EP 2436966 B1 EP2436966 B1 EP 2436966B1 EP 20110181282 EP20110181282 EP 20110181282 EP 11181282 A EP11181282 A EP 11181282A EP 2436966 B1 EP2436966 B1 EP 2436966B1
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EP
European Patent Office
Prior art keywords
reinforcement
fact
tank
reinforcement device
valve
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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.)
Active
Application number
EP20110181282
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English (en)
French (fr)
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EP2436966A1 (de
Inventor
Mario Schenetti
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.)
Autel Srl
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Autel Srl
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Publication date
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Publication of EP2436966A1 publication Critical patent/EP2436966A1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
    • F17C1/08—Integral reinforcements, e.g. ribs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0138—Shape tubular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/011—Reinforcing means
    • F17C2203/013—Reinforcing means in the vessel, e.g. columns
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0326—Valves electrically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/031—Air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/011—Improving strength
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/05—Applications for industrial use

Definitions

  • the present invention relates to a reinforcement device for containment tanks of a pressurized gas in industrial filter cleaning systems.
  • Such systems allow filtering the dirty air extracted by a system, trapping the dusts by means of suitable filtering elements.
  • the filtering elements consist of so-called “sleeves” or alternatively “cartridges”.
  • the sleeves are fabric filters of different types, depending on the characteristics of the air to be cleaned, and can be made up, e.g., of a series of cylindrical bags arranged alongside one another and made of material with permeability such as to allow the transit of gas and trapping the dust and particulate of various kinds.
  • the cartridges on the other hand consist of a rigid and suitably shaped filtering material.
  • Such filtering stations also have specific systems for cleaning the filtering elements, suitable for intervening periodically to detach the trapped dusts from the filtering elements.
  • a particular type of such cleaning devices contemplates the injection of a pulse of compressed air inside the filtering elements by means of the action of valves that can be operated electrically and which are fitted side by side on a compressed-air storage tank.
  • the injected compressed air acts in the direction opposite to the normal flow of extracted air to be cleaned and causes the shaking or vibration of the filtering elements, inducing the precipitation of the dusts deposited on the outer surface of the filtering elements themselves.
  • the precipitated dusts are then collected up to be retrieved or rejected.
  • Different types of pulse valves exist which differ in terms of operation, size and type of installation with respect to the compressed-air tank.
  • Valves are known, for example, having a threaded or flanged connection that can be coupled to a complementary threaded section or to a corresponding flange respectively made overhanging from the outer surface of the compressed-air tank.
  • the integrated valves comprise, in particular, a valve body which houses the actual valve element, made up, e.g., of a membrane solenoid valve.
  • valve body has one or more openings for letting in the compressed air from the tank and a compressed-air outlet mouth.
  • the valve element is suitable for controlling the flow of air from the inlet openings towards the outlet mouth.
  • the integrated valves also comprise a compressed-air outlet duct, conventionally known as “shooting duct”, which, once fitted, crosses the tank transversally.
  • the shooting duct has a first compressed-air inlet extremity associable, e.g., by screwing, with the outlet mouth of the valve body and a second compressed-air outlet extremity associable with the filtering elements of the dust abatement system.
  • the valve element therefore, is electrically controlled to carry out the injection of compressed air from the tank, through the inlet openings on the valve body, through the first extremity of the shooting duct, as far as the second extremity and towards the filtering elements.
  • the compressed-air tank in fact commonly has an elongated tubular shape with round cross section and two openings have to be made diametrically opposite on this to allow fitting the shooting duct of each of the valves.
  • valve is then fastened to the tank by means of a connection element fitted around the second extremity of the shooting duct and positioned in contact with the outer surface of the tank.
  • a ring nut that can be screwed onto a threaded section of the second extremity or the shooting duct then allows securing the connection element and the valve body on the tank surface, in correspondence to the openings.
  • Suitable seals are placed between the valve body and the tank and between the connection element and the tank.
  • a known method is to fit a bar inside the tank made of metal or other material, with variable section which, once positioned with its extremities in the proximity of the holes and along the direction of crushing of the tank, opposes the out-of-roundness of the tank itself.
  • the metal bar is fastened at one extremity to the inner surface of the tank by means of a welding procedure.
  • the main object of the present invention is to provide a reinforcement device for containment tanks of a pressurized gas in industrial filter cleaning systems which permits contrasting the out-of-roundness of the tank and, at the same time, avoiding welding operations being made inside the tank itself.
  • Another object of the present invention is to provide a reinforcement device for containment tanks of a pressurized gas in industrial filter cleaning systems which permits the use of tanks with walls of less thickness, with consequent cutting of total costs.
  • Another object of the present invention is to provide a reinforcement device for containment tanks of a pressurized gas in industrial filter cleaning systems that allows overcoming the mentioned drawbacks of the state of the art in the ambit of a simple, rational, easy and effective to use as well as low cost solution.
  • the present reinforcement device for containment tanks of a pressurized gas in industrial filter cleaning systems characterised by the fact that it comprises supporting means associable with at least one valve device suitable for being fitted at least partially inside a containment tank of a pressurized gas, and at least one reinforcement element associated with said supporting means and having at least a first and a second extremity which can be positioned in proximity of two substantially opposite portions of the inner surface of said tank.
  • industrial filter cleaning systems conventional-type systems, used in the industrial field to clean filtering elements suitable for air treatment.
  • the figures partially show an example of industrial filter cleaning system, indicated altogether by the reference A, to which has been fitted the reinforcement device 1 according to the invention in a first embodiment ( figures 1 and 2 ) and in a second embodiment ( figures 3 and 4 ).
  • the system A comprises a tank B with elongated tubular shape and round cross section (only partially visible in the illustrations) suitable for containing a gas under pressure, e.g., compressed air.
  • a gas under pressure e.g., compressed air.
  • a first and a second opening C and D are made along the tank B in correspondence to diametrically opposite portions to allow fitting a valve device, indicated altogether by the reference E, usable to inject a pulse of compressed air inside the filtering elements to be cleaned.
  • the valve device E is preferably of the type of a so-called "integrated" valve or the like.
  • valve device E comprises a valve body F housing the control means for the dispensing of the flow of gas coming from the tank B, consisting, e.g., of a membrane solenoid valve.
  • valve body F has one or more openings G for the inlet of the compressed air from the tank B and a mouth H for the outlet of the compressed air.
  • the membrane solenoid valve inside the valve body F is suitable for controlling the flow of air from the openings G towards the mouth H.
  • the valve device E also comprises a duct I for the outlet of the compressed air, conventionally known as "shooting duct", which, once installed, crosses the tank B transversally.
  • the duct I has a first compressed-air inlet extremity associable with the mouth H of the valve body, e.g., by means of the threaded means, and a second compressed-air outlet extremity protruding from the second opening D and which is associable with the filtering elements of the dust abatement system.
  • the valve device E is then electrically controlled to inject compressed air from the tank B, through the openings G onto the valve body F, through the first extremity of the duct I, as far as the second extremity of the duct I and towards the filtering elements.
  • valve device E is then fastened to the tank B by means of a connecting element L fitted around the second extremity of the duct I and positioned in contact with the outer surface of the tank itself.
  • a ring nut M which can be screwed onto a threaded section of the second extremity of the duct I then allows securing the connection element L and the valve body F to the surface of the tank B, in correspondence to the first and second opening C and D.
  • Suitable seals are placed between the valve body F and the tank B and between the connection element L and the tank B to prevent air from escaping.
  • the function of the reinforcement device 1 is to contrast the out-of-roundness of the tank B once the air inside it is pressurised and during the use of the valve device E.
  • the reinforcement device 1 in particular, comprises supporting means associable with the valve device E, altogether indicated by the reference 2 in the first embodiment of the invention ( figures 1 and 2 ) and by the reference 2' in the second embodiment of the invention ( figures 3 and 4 ).
  • the reinforcement device 1 also comprises at least a reinforcement element 3 with a substantially elongated shape associated integral with the supporting means 2, 2' and having a first and a second extremity positionable in correspondence to two opposite portions of the inner surface of the tank B, in the proximity of the first opening C and of the second opening D, respectively.
  • the reinforcement device 1 comprises supporting means 2 associable with the valve body F of the valve device E.
  • the supporting means 2 are composed of a holding element having a ring portion 4 positionable around a protruding portion N of the valve body F having the mouth H for the outlet of the compressed air.
  • the protruding portion N is fitted through the first opening C and extends inside the tank B.
  • the ring portion 4 can be fitted to measure on the protruding portion N, making the holding element 2 integral with the valve body F.
  • the holding element 2 also comprises an arm 5 which extends from the ring portion 4 and to which the reinforcement element 3 is fastened integral.
  • the arm 5 extends overhanging from the ring portion 4 along a direction substantially at right angles with respect to the longitudinal axis of the valve device 2.
  • the reinforcement element 3 is composed of a bar that can be made of metal material, e.g., aluminium, or other non-metal material, e.g., synthetic fibres or thermoplastic materials.
  • the bar 3 is fastened to the free extremity of the arm 5 and extends along a direction substantially parallel to the longitudinal axis of the duct I, with the extremities arranged in correspondence to opposite portions of the inner surface of the tank B, in the proximity of the first opening C and the second opening D, respectively.
  • the reinforcement element 3 can be fastened to the arm 5 using different methods of known type such as, e.g., interlocking and welding.
  • the reinforcement device 1 comprises supporting means 2' associable with the duct I of the valve device E.
  • the supporting means 2' are composed of a pair of holding elements, arranged aligned the one with the other.
  • Each holding element 2' has a ring portion 4' positionable around a section of the duct I.
  • the ring portions 4' can be fitted to measure on the duct I.
  • Each holding element 2' also comprises a pair of arms 5' extending from the ring portion 4' and to which are fastened respective reinforcement elements 3.
  • the arms 5' extend overhanging from substantially opposite parts of the ring portion 4', along a direction substantially at right angles with respect to the longitudinal axis of the valve device 1.
  • the reinforcement elements 3 are composed of respective bars that can be made of metal material, e.g., aluminium, or non-metal material, e.g., synthetic fibres or thermoplastic materials.
  • Each bar 3 is fastened at two points to the free extremity of the respective arms 5' of each of the holding elements 2' and extends along a direction substantially parallel to the longitudinal axis of the duct I, with the extremities arranged in correspondence to the opposite portions of the inner surface of the tank B, in the proximity of the first opening C and of the second opening D, respectively.
  • Each reinforcement element 3 can be fastened to the respective arm 5' using different methods of known type such as, e.g., interlocking and welding.
  • the bars 3 arrange themselves parallel with the duct I, with the extremities arranged in correspondence to opposite portions of the inner surface of the tank B, in the proximity of the first opening C and of the second opening D, respectively.
  • the reinforcement device according to the invention allows contrasting the out-of-roundness of the tank and, at the same time, avoiding welding operations inside the tank itself.
  • the reinforcement device according to the invention allows using tanks with walls of lower thickness, with a consequent reduction in the total costs of building the industrial filter cleaning system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Sampling And Sample Adjustment (AREA)

Claims (13)

  1. Verstärkungsvorrichtung (1) für Sicherheitsbehälter mit Druckgas in Industriefilterreinigungssystemen, dadurch gekennzeichnet, dass sie Stützeinrichtungen (2, 2'), die mit mindestens einer Ventilvorrichtung (E), die geeignet ist, mindestens teilweise innerhalb eines Sicherheitsbehälters (B) mit Druckgas angebracht zu werden, verbindbar sind, und mindestens ein Verstärkungselement (3), das mit den Stützeinrichtungen (2, 2') verbunden ist und mindestens ein erstes und ein zweites Ende, die in der Nähe von zwei im Wesentlichen gegenüberliegenden Abschnitten der inneren Oberfläche des Behälters (B) angeordnet sein können, besitzt, aufweist.
  2. Verstärkungsvorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Stützeinrichtung (2) mit dem Ventilkörper (F) der Ventilvorrichtung (E), die geeignet ist, die Steuerungseinrichtung zum Abgeben des aus dem Behälter (B) kommenden Gasstroms aufzunehmen, verbindbar ist.
  3. Verstärkungsvorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Stützeinrichtung (2') mit mindestens einem Schusskanal (I) für das Druckgas der Ventilvorrichtung (E) verbindbar ist.
  4. Verstärkungsvorrichtung (1) nach einem oder mehr der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Stützeinrichtung (2, 2') mindestens ein Halteelement (2, 2'), das mit einem Teilstück der Ventilvorrichtung (E) verbindbar ist, aufweist.
  5. Verstärkungsvorrichtung (1) nach Anspruch 4, dadurch gekennzeichnet, dass das Halteelement (2, 2') mindestens einen Ringabschnitt (4, 4'), der um das Teilstück der Ventilvorrichtung (E) angeordnet sein kann, aufweist.
  6. Verstärkungsvorrichtung (1) nach Anspruch 5, dadurch gekennzeichnet, dass das Halteelement (2, 2') mindestens einen Arm (5), der sich vom Ringabschnitt (4, 4') erstreckt, aufweist, wobei das Verstärkungselement (3) einen Teil bildend mit dem Arm (5) verbunden ist.
  7. Verstärkungsvorrichtung (1) nach den Ansprüchen 2 und 5, dadurch gekennzeichnet, dass der Ringabschnitt (4) des Halteelements (2) um mindestens einen vorspringenden Abschnitt des Ventilkörpers (F) angeordnet sein kann.
  8. Verstärkungsvorrichtung (1) nach den Ansprüchen 3 und 5, dadurch gekennzeichnet, dass der Ringabschnitt (4') des Halteelements (2') um mindestens ein Teilstück des Schusskanals (I) angeordnet sein kann.
  9. Verstärkungsvorrichtung (1) nach einem oder mehr der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass das Verstärkungselement (3) eine im Wesentlichen längliche Form hat.
  10. Verstärkungsvorrichtung (1) nach einem oder mehr der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass das Verstärkungselement (3) mindestens einen Stab (3) oder dergleichen aufweist.
  11. Verstärkungsvorrichtung (1) nach einem oder mehr der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass sie mindestens zwei der Verstärkungselemente (3) aufweist.
  12. Verstärkungsvorrichtung (1) nach Anspruch 11,
    dadurch gekennzeichnet, dass die zwei Verstärkungselemente (3) im Wesentlichen parallel zueinander verlaufen.
  13. Verstärkungsvorrichtung (1) nach den Ansprüchen 6 und 11, dadurch gekennzeichnet, dass das Halteelement (2') mindestens zwei der Arme (5), die sich von im Wesentlichen gegenüberliegenden Teilen des Ringabschnitts (4') erstrecken, aufweist, wobei die zwei Verstärkungselemente (3) jeweils mit den Armen (5) verbunden sind.
EP20110181282 2010-09-30 2011-09-14 Verstärkungsvorrichtung für Sicherheitsbehälter mit Druckgas in einem Industriefilterreinigungssystem Active EP2436966B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMO2010A000274A IT1402061B1 (it) 2010-09-30 2010-09-30 Dispositivo di rinforzo per serbatoi di contenimento di un gas in pressione in sistemi per la pulizia di filtri industriali

Publications (2)

Publication Number Publication Date
EP2436966A1 EP2436966A1 (de) 2012-04-04
EP2436966B1 true EP2436966B1 (de) 2013-07-03

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EP20110181282 Active EP2436966B1 (de) 2010-09-30 2011-09-14 Verstärkungsvorrichtung für Sicherheitsbehälter mit Druckgas in einem Industriefilterreinigungssystem

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EP (1) EP2436966B1 (de)
IT (1) IT1402061B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900009477A1 (it) * 2019-06-19 2020-12-19 Trimec S R L Dispositivo valvolare per la pulizia di filtri industriali
IT202200000980A1 (it) * 2022-01-21 2022-04-21 Gaetano Armenise Valvola a impulso per la pulizia di filtri industriali

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4085865A (en) * 1976-05-13 1978-04-25 Textron Inc. Elastomeric bladder for positive expulsion tank
US5386845A (en) * 1990-10-10 1995-02-07 Montana Sulphur & Chemical Company Fluid transport apparatus with side recessed fitting well
ITVI20060078A1 (it) * 2006-03-21 2007-09-22 I M Z Spa Serbatoio per fluidi ad elevata pressione

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IT1402061B1 (it) 2013-08-28
ITMO20100274A1 (it) 2012-03-31
EP2436966A1 (de) 2012-04-04

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