EP0062696B1 - Closing panel, especially explosion relief panel - Google Patents

Closing panel, especially explosion relief panel Download PDF

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Publication number
EP0062696B1
EP0062696B1 EP81108575A EP81108575A EP0062696B1 EP 0062696 B1 EP0062696 B1 EP 0062696B1 EP 81108575 A EP81108575 A EP 81108575A EP 81108575 A EP81108575 A EP 81108575A EP 0062696 B1 EP0062696 B1 EP 0062696B1
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EP
European Patent Office
Prior art keywords
wall
articulation
lever arm
closing panel
panel according
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
EP81108575A
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German (de)
French (fr)
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EP0062696A1 (en
Inventor
Gerrit Fons
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Jansens and Dieperink BV
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Jansens and Dieperink BV
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Publication of EP0062696A1 publication Critical patent/EP0062696A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/22—Safety features
    • B65D90/32—Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure
    • B65D90/36—Weakened parts

Definitions

  • the invention relates to an explosion closure plate, in particular explosion hatch, of the type mentioned in the preamble of claims 1 and 2.
  • Explosion sealing plates of this type can be used in particular in systems in which dust explosions are to be expected. Their valve-like effect is intended to prevent plant parts from being torn or damaged at undesired locations by a certain excess pressure.
  • the explosion flaps represent the "weakest" parts of the system or the container or the wall, so that the overpressure can compensate there.
  • such explosion closure plates can also be used in devices in which undesired negative pressure is to be expected, provided that a further opening is provided with the plate reversed, however.
  • the pressure at which the "relief" is to take place is quite difficult to set, especially when the plate size reaches an area of the order of 1 square meter.
  • the invention is therefore based on the object of improving the explosion closure plate of the type mentioned in such a way that, despite the simple design, a better adjustability to the response or the specific positive or negative pressure is possible.
  • the clamping profile is bridged by at least one lever arm, one side of which is articulated either on the wall - or the plate.
  • the other side of the lever arm is supported directly or indirectly on the plate - or the wall or the clamping profile, when a locking member, which is designed in particular as a shear pin, prevents pivoting of the lever arm about the articulation point in the closed position.
  • a locking member which is designed in particular as a shear pin
  • the holding pressure which holds the plate in the opening of the wall, is transmitted in the invention by the seal consisting in particular of rubber or rubber-elastic plastic and designed as a clamping profile.
  • the lever arm serves for additional support of the plate in one direction. As a result, the plate can be blasted out in both directions, but is nevertheless easily adjustable with regard to the limit pressure.
  • the plate is given the possibility of evading in the direction of the lever arm and guessing out of the clamping profile or pushing the clamping profile out of its mounting in the wall in order to enable pressure equalization.
  • the "explosive force" which must be achieved in order to deactivate the locking element can be adjusted accordingly by a suitable choice of the design and the material of the locking element, which is designed in particular as a shear pin, and by a suitable selection of the distance thereof from the articulation point. In order to obtain adjustability in this regard, it is advisable to make the distance from the locking member to the articulation point changeable.
  • a loading opening with approximately several square meters of opening area is closed by means of a plate 4, which forms the explosion closure plate according to the invention / innovation and also as a »hatch «Can be called.
  • the outer edge of the plate 4 is inserted into a recess of the clamping profile 1, the opposite recess - as can be seen in particular from FIG. 2 - is pushed onto the edge 9 of the wall 3 delimiting the opening.
  • the clamping profile 1 forms a seal in this closed position, so that rain or sea water cannot penetrate into the loading space covered by the plate 4.
  • the clamping profile 1 holds the plate 4 in the desired position.
  • the plate 4 In addition to this mounting of the plate 4, which is a known arrangement, it is also supported by means of the lever arm 2, which is articulated at its end shown on the left in FIG. whose web part is welded to the wall 3. At the opposite end, the lever arm 2 is provided with an adjusting element 8, which is designed as a screw and whose free end can be turned to the outside of the plate 4. The distance G from the upper edge of the lever arm 2 to the outside of the plate 4 can now by screwing the screw, d. H. of the setting element 8.
  • the lever arm 2 is additionally connected to the bearing block 6 at a distance A from the articulation point 7 by means of a shear pin serving as a locking element 5.
  • This distance A is, for example, 70 mm, with a distance B of about 30 cm from the point of attack of the adjusting element 8 on the plate 4 to the articulation point 7.
  • a screw with the thread M 12 is used as the setting member 8, for example, while the shear pin consists of aluminum with a diameter of 6 mm.
  • the bearing block 6 is a U-iron with a thickness of 4 mm and the dimensions 40 x 50 x 40 mm.
  • the lever arm 2 is also a U-iron, but with the dimensions 40 x 60 x 40 mm, so that there is no play on both sides between the inside of the legs of the lever arm 2 and the outside of the legs of the bearing block 6.
  • the leg height D of the bearing block 6 is therefore 40 mm.
  • the distance G from the articulation point 7 to the edge 9 of the wall 3 delimiting the opening in this exemplary embodiment is approximately 12 cm.
  • the width of the lever arm 2 is 60 mm and the width F of the pedestal 6 is 50 mm.
  • the plate 4 is articulated on the side shown on the left with conventional joints on the wall 3, while it is only on the right side by means of the lever arm 2 and the same design as in FIG. 1 is torn open from the locked position to the open position when a certain limit pressure is exceeded.
  • the joints 10 ensure that the plate 4 is not thrown away, but remains on the wall 3.
  • the bearing block 6 is fastened to the underside of the plate 4, so that the holding force can be adjusted via the lever arm 2 and the adjusting element 8 in that the screw forming the holding element 8 is pressed onto the inside of the wall 3 and screwed in further the pressure is increased. If the set limit pressure is exceeded, the locking member 5 shears through, so that the lever arm 2 can be pivoted counterclockwise and the plate 4 can be torn out of the rubber-elastic clamping profile 1.
  • the locking member 5 is arranged on the side opposite the adjusting member 8 from the articulation point 7 of the lever arm 2.
  • the torque is determined by the distance A between the articulation point 7 and the locking member 5.
  • the ratio of this distance A to the distance B also determines the force relationships between the force used to shear the locking member 5 and the pressure force acting on the plate 4 .
  • the distance between the point of attack of the setting element 8 on the Plate 4 and the locking member 5 and the articulation point 7 are made adjustable.

Description

Die Erfindung betrifft eine Explosions-Verschlußplatte, insbesondere Explosions-Luke, der im Oberbegriff der Ansprüche 1 und 2 genannten Gattung.The invention relates to an explosion closure plate, in particular explosion hatch, of the type mentioned in the preamble of claims 1 and 2.

Derartige Explosions-Verschlußplatten sind bereits bekannt (VDI Richtlinien 3673 über Druckentlastung von Staubexplosionen vom Juni 1979, S. 5/6). Dabei wird die scheibenartige Verschlußplatte in einem Gummiklemmprofil gehalten. Bei Erreichen eines nicht mehr zulässigen Überdrucks in einem mit der Verschlußplatte verschlossenen Behälter wird die Scheibe insbesondere explosionsartig aus dem Klemmprofil herausgedrückt. Dabei ist es möglich, die Scheibe durch einen Haltedraht am Wegfliegen zu hindern. Aufgrund von zum Abstützen dienenden Armen ist die Verschlußplatte nur nach außen, d. h. bei Überdruck im Innenraum, absprengbar. Soll die Vorrichtung auch bei Unterdruck ansprechen, ist eine zweite Öffnung mit einer umgekehrt eingesetzten Verschlußplatte erforderlich.Such explosion sealing plates are already known (VDI guidelines 3673 on pressure relief from dust explosions of June 1979, p. 5/6). The disc-like closure plate is held in a rubber clamping profile. When a pressure which is no longer permissible is reached in a container closed with the closure plate, the pane is pressed out of the clamping profile in an explosive manner. It is possible to prevent the disc from flying away with a holding wire. Due to arms serving for support, the closure plate is only outward, i. H. with excess pressure in the interior, can be blasted off. If the device should also respond under negative pressure, a second opening with a reversing closure plate is required.

Derartige Explosions-Verschlußplatten sind insbesondere bei Anlagen anwendbar, bei denen mit Staubexplosionen zu rechnen ist. Ihre ventilartige Wirkung soll verhindern, daß durch einen bestimmten Überdruck Anlagenteile an unerwünschten Stellen zerrissen oder beschädigt werden. Die Explosions-Verschlußklappen stellen die »schwächsten« Stellen der Anlage bzw. des Behälters oder der Wand dar, so daß sich der Überdruck dort auszugleichen vermag. Entsprechend sind solche Explosions-Verschlußplatten auch bei Einrichtungen anwendbar, bei denen mit unerwünschten Unterdrucken zu rechnen ist, sofern eine weitere Öffnung entsprechend jedoch mit seitenvertauschter Platte vorgesehen wird. Außer diesem Mangel hat es sich gezeigt, daß der Druck, bei dem die »Entlastung« stattfinden soll, recht schwierig einstellbar ist, insbesondere wenn die Plattengröße einen Bereich in der Größenordnung von 1 qm erreicht.Explosion sealing plates of this type can be used in particular in systems in which dust explosions are to be expected. Their valve-like effect is intended to prevent plant parts from being torn or damaged at undesired locations by a certain excess pressure. The explosion flaps represent the "weakest" parts of the system or the container or the wall, so that the overpressure can compensate there. Correspondingly, such explosion closure plates can also be used in devices in which undesired negative pressure is to be expected, provided that a further opening is provided with the plate reversed, however. In addition to this deficiency, it has been shown that the pressure at which the "relief" is to take place is quite difficult to set, especially when the plate size reaches an area of the order of 1 square meter.

Außerdem ist es bekannt (US-A 4 207 706), die Platte unmittelbar an der Wand anzulenken und mit einem magnetisch wirksamen Sperriegel zu versehen; diese Vorrichtung ist recht kompliziert. Schließlich ist es auch bekannt (FR-A 2 419 444), den über die Verschlußplatte überstehenden Bügelarm über ein aufsprengbares Sperrorgan mit der Wand zu verbinden. Auch hier ist eine Druckentlastung nach nur einer Seite möglich.In addition, it is known (US Pat. No. 4,207,706) to link the plate directly to the wall and to provide it with a magnetically effective locking bolt; this device is quite complicated. Finally, it is also known (FR-A 2 419 444) to connect the bracket arm protruding beyond the closure plate to the wall by means of a detachable locking member. Here too, pressure relief is only possible on one side.

Der Erfindung liegt daher die Aufgabe zugrunde, die Explosions-Verschlußplatte der eingangs genannten Gattung dahingehend zu verbessern, daß trotz konstruktiv einfacher Gestaltung eine bessere Einstellbarkeit auf das Ansprechen bzw. den bestimmten Über- oder Unterdruck möglich ist.The invention is therefore based on the object of improving the explosion closure plate of the type mentioned in such a way that, despite the simple design, a better adjustability to the response or the specific positive or negative pressure is possible.

Die Erfindung ist in den nebengeordneten Ansprüchen 1 und 2 beansprucht. Dabei ist das Klemmprofil mindestens von einem Hebelarm überbrückt, von dem eine Seite entweder an der Wand - oder der Platte - angelenkt ist. Die andere Seite des Hebelarmes stützt sich dagegen direkt oder indirekt an der Platte - bzw. der Wand bzw. dem Klemmprofil dann an, wenn ein Sperrorgan, das insbesondere als Scherstift ausgebildet ist, in der Verschlußstellung ein Schwenken des Hebelarmes um die Anlenkstelle verhindert. Bei Auftreten des bestimmten Über- bzw. Unterdruckes schert das Sperrorgan ab und der Hebelarm ist nun um die Anlenkstelle schwenkbar.The invention is claimed in the independent claims 1 and 2. The clamping profile is bridged by at least one lever arm, one side of which is articulated either on the wall - or the plate. The other side of the lever arm, on the other hand, is supported directly or indirectly on the plate - or the wall or the clamping profile, when a locking member, which is designed in particular as a shear pin, prevents pivoting of the lever arm about the articulation point in the closed position. When the certain overpressure or underpressure occurs, the locking member shears off and the lever arm can now be pivoted about the articulation point.

Der Haltedruck, der die Platte in der Öffnung der Wand hält, wird bei der Erfindung durch die insbesondere aus Gummi oder gummielastischem Kunststoff bestehende und als Klemmprofil ausgebildete Dichtung übertragen. Außerdem dient der Hebelarm zur zusätzlichen Abstützung der Platte in einer Richtung. Dadurch ist die Platte zwar nach beiden Richtungen aussprengbar, aber dennoch hinsichtlich des Grenzdruckes leicht einstellbar.The holding pressure, which holds the plate in the opening of the wall, is transmitted in the invention by the seal consisting in particular of rubber or rubber-elastic plastic and designed as a clamping profile. In addition, the lever arm serves for additional support of the plate in one direction. As a result, the plate can be blasted out in both directions, but is nevertheless easily adjustable with regard to the limit pressure.

Um diese Abstützkraft gut einstellen zu können, empfiehlt es sich nach einer besonderen Ausbildung der Erfindung, den Hebelarm an der der Anlenkstelle abgewandten Seite mit einem Einstellorgan, insbesondere einer Schraube, auszurüsten, deren Spitze oder auch deren Schraubkopf sich an die Außenseite der Platte anlegen läßt. Durch Verstellen der Schraube kann auch der Übertragungsdruck vom Hebelarm auf die Platte verändert werden, da das Klemmprofil der Dichtung aufgrund seiner biegeelastischen Eigenschaften biegbar ist und die Platte aus der normalen Haltestelle etwas ausgelenkt werden kann.In order to be able to set this supporting force well, it is recommended according to a special embodiment of the invention to equip the lever arm on the side facing away from the articulation point with an adjusting element, in particular a screw, the tip or the screw head of which can be placed on the outside of the plate . By adjusting the screw, the transmission pressure from the lever arm to the plate can also be changed, since the clamping profile of the seal can be bent due to its flexible properties and the plate can be deflected somewhat from the normal stop.

Wird jedoch der Druckunterschied zwischen Außen- und Innenseite der Platte bzw. des von der Platte verschlossenen Raumes zu groß, dann kann diese Kraft von dem Hebelarm bzw. dem Sperrorgan nicht mehr aufgenommen werden; dieses fällt dann hinsichtlich seiner Sperrwirkung aus und erlaubt dem Hebelarm, sich um die Anlenkstelle zu verschwenken. Hierdurch wird der Platte die Möglichkeit gegeben, in Richtung zum Hebelarm auszuweichen und aus dem Klemmprofil herauszugeraten bzw. das Klemmprofil aus seiner Lagerung in der Wand herauszudrücken, um den Druckausgleich zu ermöglichen.However, if the pressure difference between the outside and inside of the plate or the space closed by the plate becomes too large, then this force can no longer be absorbed by the lever arm or the locking member; This then fails in terms of its locking effect and allows the lever arm to pivot around the articulation point. As a result, the plate is given the possibility of evading in the direction of the lever arm and guessing out of the clamping profile or pushing the clamping profile out of its mounting in the wall in order to enable pressure equalization.

Durch geeignete Wahl der Ausbildung und des Werkstoffs des insbesondere als Scherstift ausgebildeten Sperrorgans sowie durch geeignete Wahl des Abstands desselben von der Anlenkstelle kann die »Sprengkraft« entsprechend eingestellt werden, die erreicht werden muß, um das Sperrorgan außer Funktion zu setzen. Um auch diesbezüglich eine Einstellbarkeit zu erhalten, empfiehlt es sich, den Abstand vom Sperrorgan zur Anlenkstelle veränderbar zu machen.The "explosive force" which must be achieved in order to deactivate the locking element can be adjusted accordingly by a suitable choice of the design and the material of the locking element, which is designed in particular as a shear pin, and by a suitable selection of the distance thereof from the articulation point. In order to obtain adjustability in this regard, it is advisable to make the distance from the locking member to the articulation point changeable.

Weitere Ausbildungen der Erfindung/Neuerung sind in den Unteransprüchen beansprucht und werden im folgenden anhand der Zeichnung noch näher erläutert. Dabei zeigt

  • Fig. 1 eine schematische Teilaufsicht auf einen Schiffsladeraum, der mit einer Explosions-Verschlußluke verschlossen ist;
  • Fig. 2 eine Seitenansicht teilweise im Querschnitt längs der Schnittlinien I-I von Fig. 1;
  • Fig. 3 eine Aufsicht - teilweise aufgebrochen - auf den Bereich des Hebelarms und der entsprechenden Übergangsstelle von der Wand über das Klemmprofil zur Platte;
  • Fig. 4 eine andere Ausbildung der Erfindung/ Neuerung, und zwar wiederum entsprechend Fig. 1 als Teilausschnitt der Aufsicht auf eine Explosions-Verschlußtür;
  • Fig. 5 einen Querschnitt durch die Übergangsstelle von der Wand über das Klemmprofil zur Platte mit einer anderen Ausbildung des Hebelarms in Seitenansicht und
  • Fig. 6 eine Teilaufsicht auf den Bereich der Anlenkstelle der Ausbildung gemäß Fig. 5.
Further developments of the invention / innovation are claimed in the subclaims and are explained in more detail below with reference to the drawing. It shows
  • Fig. 1 is a schematic partial supervision of a Ship's hold closed with an explosion hatch;
  • FIG. 2 is a side view, partly in cross section, along the section lines II of FIG. 1;
  • Figure 3 is a plan view - partially broken away - of the area of the lever arm and the corresponding transition point from the wall via the clamping profile to the plate;
  • Fig. 4 shows another embodiment of the invention / innovation, again in accordance with Figure 1 as a partial section of the supervision of an explosion lock door.
  • Fig. 5 shows a cross section through the transition point from the wall via the clamping profile to the plate with a different design of the lever arm in side view
  • 6 is a partial view of the area of the articulation point of the design according to FIG. 5.

Gemäß Fig. 1 ist auf der Wand 3, beispielsweise einem Schiffsdeck, das einen Laderaum nach oben abschließt, eine Ladeöffnung mit etwa mehreren Quadratmetern Öffnungsfläche mittels einer Platte 4 verschlossen, die die Explosions-Verschlußplatte gemäß der Erfindung/ Neuerung bildet und auch als »Luke« bezeichnet werden kann. Der Außenrand der Platte 4 ist in eine Aussparung des Klemmprofils 1 eingesetzt, dessen entgegengesetzte Aussparung - wie insbesondere aus Fig. 2 ersichtlich ist - auf den die Öffnung begrenzenden Rand 9 der Wand 3 aufgesteckt ist. Das Klemmprofil 1 bildet in dieser Verschlußstellung eine Dichtung, so daß Regen- oder Seewasser nicht in den von der Platte 4 abgedeckten Laderaum eindringen kann. Außerdem hält das Klemmprofil 1 die Platte 4 in der gewünschten Stellung fest.According to FIG. 1, on the wall 3, for example a ship deck, which closes off a loading space at the top, a loading opening with approximately several square meters of opening area is closed by means of a plate 4, which forms the explosion closure plate according to the invention / innovation and also as a »hatch «Can be called. The outer edge of the plate 4 is inserted into a recess of the clamping profile 1, the opposite recess - as can be seen in particular from FIG. 2 - is pushed onto the edge 9 of the wall 3 delimiting the opening. The clamping profile 1 forms a seal in this closed position, so that rain or sea water cannot penetrate into the loading space covered by the plate 4. In addition, the clamping profile 1 holds the plate 4 in the desired position.

Über diese eine bekannte Anordnung darstellende Halterung der Platte 4 hinaus wird diese jedoch noch mittels des Hebelarmes 2 abgestützt, der an seinem in Fig. 2 links dargestellten Ende mittels eines Schraubbolzens an der Anlenkstelle 7 an einem im Querschnitt U-förmigen Lagerbock 6 angelenkt ist, dessen Stegteil an die Wand 3 angeschweißt ist. Am entgegengesetzten Ende ist der Hebelarm 2 mit einem Einstellorgan 8 versehen, das als Schraube ausgebildet ist und dessen freies Ende an die Außenseite der Platte 4 andrehbar ist. Der Abstand G von der Oberkante des Hebelarmes 2 bis zur Außenseite der Platte 4 kann nun durch Verschrauben der Schraube, d. h. des Einstellorgans 8, geändert werden. Damit bei einer solchen Änderung des Abstandes C auch Kräfte über den Hebelarm 2 auf die Platte 4 übertragen werden können, ist der Hebelarm 2 im Abstand A von der Anlenkstelle 7 mittels eines als Sperrorgan 5 dienenden Scherstiftes zusätzlich mit dem Lagerbock 6 verbunden. Dieser Abstand A beträgt beispielsweise 70 mm, bei einem Abstand B von der Angriffsstelle des Einstellorgans 8 an der Platte 4 bis zur Anlenkstelle 7 von etwa 30 cm. Als Einstellorgan 8 dient beispielsweise eine Schraube mit dem Gewinde M 12, während der Scherstift aus Aluminium mit einem Durchmesser von 6 mm besteht. Der Lagerbock 6 ist ein U-Eisen mit einer Dicke von 4 mm und den Abmessungen 40 x 50 x 40 mm. Der Hebelarm 2 ist ebenfalls ein U-Eisen, jedoch mit den Abmessungen 40 x 60 x 40 mm, so daß zwischen den Innenseiten der Schenkel des Hebelarms 2 und den Außenseiten der Schenkel des Lagerbocks 6 kein Spielraum an beiden Seiten besteht. Die Schenkelhöhe D des Lagerbockes 6 ist daher 40 mm. Der Abstand G von der Anlenkstelle 7 bis zum die Öffnung begrenzenden Rand 9 der Wand 3 beträgt bei diesem Ausführungsbeispiel etwa 12 cm. Die Breite des Hebelarmes 2 beträgt 60 mm und die Breite F des Lagerbockes 6 50mm.In addition to this mounting of the plate 4, which is a known arrangement, it is also supported by means of the lever arm 2, which is articulated at its end shown on the left in FIG. whose web part is welded to the wall 3. At the opposite end, the lever arm 2 is provided with an adjusting element 8, which is designed as a screw and whose free end can be turned to the outside of the plate 4. The distance G from the upper edge of the lever arm 2 to the outside of the plate 4 can now by screwing the screw, d. H. of the setting element 8. So that with such a change in the distance C, forces can also be transmitted to the plate 4 via the lever arm 2, the lever arm 2 is additionally connected to the bearing block 6 at a distance A from the articulation point 7 by means of a shear pin serving as a locking element 5. This distance A is, for example, 70 mm, with a distance B of about 30 cm from the point of attack of the adjusting element 8 on the plate 4 to the articulation point 7. A screw with the thread M 12 is used as the setting member 8, for example, while the shear pin consists of aluminum with a diameter of 6 mm. The bearing block 6 is a U-iron with a thickness of 4 mm and the dimensions 40 x 50 x 40 mm. The lever arm 2 is also a U-iron, but with the dimensions 40 x 60 x 40 mm, so that there is no play on both sides between the inside of the legs of the lever arm 2 and the outside of the legs of the bearing block 6. The leg height D of the bearing block 6 is therefore 40 mm. The distance G from the articulation point 7 to the edge 9 of the wall 3 delimiting the opening in this exemplary embodiment is approximately 12 cm. The width of the lever arm 2 is 60 mm and the width F of the pedestal 6 is 50 mm.

Wird der Druck im Innenraum, d. h. unterhalb der Platte 4 unzulässig groß, dann wird eine so große Kraft von der Platte 4 über das Einstellorgan 8 und dem Hebelarm 2 sowie das Sperrorgan 5 auf den Lagerbock 6 und die Wand 3 übertragen, daß bei Erreichen bzw. Überschreiten eines Grenzwertes der Scherstift bzw. das Sperrorgan 5 durchschert und der Hebelarm 2 seine Sperrstellung verläßt und um die Anlenkstelle 7 verschwenken kann. Hierdurch kann der Hebelarm 2 keine Kraft mehr auf die Platte 4 übertragen, so daß diese aus dem Klemmprofil 1 bzw. dieses aus der Wand 3 herausgerissen wird. Die »Ventilwirkung« der Explosions-Verschlußluke ist hierdurch gewährleistet.Is the pressure in the interior, i.e. H. underneath the plate 4 inadmissibly large, then such a large force is transmitted from the plate 4 via the adjusting element 8 and the lever arm 2 and the blocking element 5 to the bearing block 6 and the wall 3, that when a limit value is reached or exceeded, the shear pin or the locking member 5 shears through and the lever arm 2 leaves its locking position and can pivot about the articulation point 7. As a result, the lever arm 2 can no longer transmit force to the plate 4, so that it is torn out of the clamping profile 1 or this from the wall 3. This guarantees the »valve effect« of the explosion hatch.

Bei der anderen Ausbildung der Erfindung/ Neuerung gemäß Fig. 4 ist die Platte 4 an der links dargestellten Seite mit üblichen Gelenken an der Wand 3 angelenkt, während sie nur an der rechten Seite mittels des Hebelarms 2 und im übrigen derselben Ausbildung wie nach Fig. 1 bei Überschreiten eines bestimmten Grenzdrukkes aus der Sperrstellung in die geöffnete Stellung aufgerissen wird. Die Gelenke 10 sorgen dafür, daß die Platte 4 nicht hinweggeschleudert wird, sondern an der Wand 3 verbleibt.In the other embodiment of the invention / innovation according to FIG. 4, the plate 4 is articulated on the side shown on the left with conventional joints on the wall 3, while it is only on the right side by means of the lever arm 2 and the same design as in FIG. 1 is torn open from the locked position to the open position when a certain limit pressure is exceeded. The joints 10 ensure that the plate 4 is not thrown away, but remains on the wall 3.

Gemäß Fig. 5 ist der Lagerbock 6 an der Unterseite der Platte 4 befestigt, so daß die Haltekraft über den Hebelarm 2 und das Einstellorgan 8 dadurch einstellbar ist, daß die das Halteorgan 8 bildende Schraube an die Innenseite der Wand 3 angedrückt und durch weiteres Einschrauben der Druck verstärkt wird. Im Falle von Überschreiten des eingestellten Grenzdruckes schert das Sperrorgan 5 durch, so daß der Hebelarm 2 im Gegenuhrzeigersinn verschwenkt und die Platte 4 aus dem gummielastischen Klemmprofil 1 herausgerissen werden kann. Im Unterschied zur Ausbildung nach den Fig. 1 bis 4 ist bei der Ausbildung von Fig. 5 und 6 das Sperrorgan 5 an der dem Einstellorgan 8 entgegengesetzten Seite von der Anlenkstelle 7 des Hebelarms 2 angeordnet. Auch hier wird jedoch das Drehmoment bestimmt vom Abstand A zwischen der Anlenkstelle 7 und dem Sperrorgan 5. Das Verhältnis dieses Abstands A zum Abstand B bestimmt auch die Kräfteverhältnisse zwischen dem zum Abscheren des Sperrorgans 5 dienenden Kraft und der Druckkraft, die auf die Platte 4 wirkt.5, the bearing block 6 is fastened to the underside of the plate 4, so that the holding force can be adjusted via the lever arm 2 and the adjusting element 8 in that the screw forming the holding element 8 is pressed onto the inside of the wall 3 and screwed in further the pressure is increased. If the set limit pressure is exceeded, the locking member 5 shears through, so that the lever arm 2 can be pivoted counterclockwise and the plate 4 can be torn out of the rubber-elastic clamping profile 1. In contrast to the embodiment according to FIGS. 1 to 4, in the embodiment of FIGS. 5 and 6 the locking member 5 is arranged on the side opposite the adjusting member 8 from the articulation point 7 of the lever arm 2. Here too, however, the torque is determined by the distance A between the articulation point 7 and the locking member 5. The ratio of this distance A to the distance B also determines the force relationships between the force used to shear the locking member 5 and the pressure force acting on the plate 4 .

Außerdem kann auch der Abstand zwischen dem Angriffspunkt des Einstellorgans 8 auf der Platte 4 und dem Sperrorgan 5 bzw. der Anlenkstelle 7 verstellbar gemacht werden.In addition, the distance between the point of attack of the setting element 8 on the Plate 4 and the locking member 5 and the articulation point 7 are made adjustable.

Claims (11)

1. Closing panel (4), especially explosion relief panel, which is holdable by means of flexurally elastic clamping section elements (1) in sealing- tight manner in an aperture in a wall (3) of a room or chamber which is to be closed, e.g. a storage bin, and can be pressed out of the wall or from the clamping section element when a specific positive pressure or negative pressure occurs in the chamber, to free the aperture at least partly, wherein the clamping section element is bridged at least by one arm (2) one end of which is secured to the wall (3) and the other end bears on the panel (4), characterised in that the arm is constructed as a lever arm (2) and is so secured by means of an articulation on the wall (3) that a detent element (5) prevents pivotal movement of the lever arm (2) about the articulation in the closure position but by shearing when a specific positive or negative pressure occurs allows pivoting movement of the lever arm (2) about the articulation at this occurrence.
2. Closing panel (4), especially explosion relief panel, which is holdable by means of flexurally elastic clamping section elements (1) in sealing- tight manner in an aperture in a wall (3) of a room or chamber which is to be closed, e.g. a storage bin, and can be pressed out of the wall or from the clamping section element when a specific positive pressure or negative pressure occurs in the chamber, to free the aperture at least partly, wherein the clamping section element is bridged at least by one arm (2) one end of which is secured on the panel (4) and the other end bears on the wall, characterised in that the arm is constructed as a lever arm (2) and is so secured to the panel (4) by means of an articulation that a detent element (5) prevents pivotal movement of the lever arm (2) about the articulation in the closure position but allows pivoting movement of the lever arm (2) about the articulation by shearing when a specific positive or negative pressure occurs.
3. Closing panel according to claim 1 or 2, characterised in that the detent element (5) is constructed as a shearing pin.
4. Closing panel according to one of the preceding claims, characterised in that there is secured to the wall (3) or to the panel (4) in the vicinity of the clamping section element (1) a bearing block (6) which comprises both the articulation, in the form of a pivoting bearing (7), and also the bearing means for the detent element (5).
5. Closing panel according to claim 4, characterised in that the bearing block (6) is constructed as a U-section and is welded on to the wall (3) externally.
6. Closing panel according to one of the preceding claims, characterised in that the lever arm (2) is constructed as a U-section.
7. Closing panel according to one of the preceding claims, characterised in that at that end of the lever arm (2) which is remote from the articulation there is arranged an adjusting element (8) which is pressable adjustably on to the panel (4) or on to the wall (3).
8. Closing panel according to claim 7, characterised in that a screw is used for the adjusting element (8).
9. Closing panel according to claim 7 or 8, characterised in that the spacing A in the longitudinal direction of the lever arm (2) from the articulation to the detent element (5) is substantially smaller than the distance B from the articulation to the adjusting element (8).
10. Closing panel according to claim 9, characterised in that the ratio of the distances B: A amounts to about 4 : 1 to 5 : 1.
11. Closing panel according to claim 9 or 10, characterised in that the spacing G from the articulation to the edge (9) of the wall (3) which is covered by the clamping section element (1) amounts to substantially double the distance A.
EP81108575A 1981-04-13 1981-10-20 Closing panel, especially explosion relief panel Expired EP0062696B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3114941A DE3114941C2 (en) 1981-04-13 1981-04-13 Explosion lock plate
DE3114941 1981-04-13

Publications (2)

Publication Number Publication Date
EP0062696A1 EP0062696A1 (en) 1982-10-20
EP0062696B1 true EP0062696B1 (en) 1985-02-13

Family

ID=6130068

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Application Number Title Priority Date Filing Date
EP81108575A Expired EP0062696B1 (en) 1981-04-13 1981-10-20 Closing panel, especially explosion relief panel

Country Status (5)

Country Link
US (1) US4656793A (en)
EP (1) EP0062696B1 (en)
JP (1) JPS57175589A (en)
DE (1) DE3114941C2 (en)
SG (1) SG35885G (en)

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Also Published As

Publication number Publication date
JPS57175589A (en) 1982-10-28
DE3114941C2 (en) 1983-07-28
SG35885G (en) 1985-11-15
JPS6152073B2 (en) 1986-11-11
DE3114941A1 (en) 1982-10-28
EP0062696A1 (en) 1982-10-20
US4656793A (en) 1987-04-14

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