EP3735385B1 - Dome lid assembly, tank, tank vehicle, method of preventing the opening of a dome lid - Google Patents

Description

The present invention relates to a dome cover arrangement for automatically opening and closing a through opening, as well as a tank or boiler, as well as a tank or boiler vehicle and a method for preventing the opening of a dome cover of a tank or boiler.

From the US 6,651,708 B2 an automatic dome cover arrangement which also extends within the tank is known.

It is also known from the US 2014/0237902 A1 a lid arrangement, which is fixed to a through opening by means of several levers to close it. The cover partially engages in the through opening and can only be moved out of the opening by a vertical movement in order to release it. Dome cover arrangements are also known in which the closure and opening of the through opening does not take place through a vertical movement, but rather through a rotary horizontal movement, whereby the cover does not engage in the through opening, for example from the US 2005/0166458 A1 , the US 2008/0078127 A1 or the EP 2 546 556 A1 . In all three of the aforementioned documents, the respective closure concepts provide for the lid to be surrounded by a clamp-like structure, which prevents vertical movement of the lid. However, the structures are not designed nor suitable for efficiently blocking and preventing horizontal movement of the lid along the opening, but rather offer inadequate protection against such horizontal movements of the lid.

The object of the present invention is to provide a dome cover arrangement, a tank or boiler and/or a tank or boiler vehicle which has a dome cover arrangement, the dome cover ensuring that when there is pressure in the tank or boiler and/or on the dome cover and /or a pressure in the tank or boiler that exceeds a predetermined limit and/or on the dome cover and/or a pressure difference across the dome cover that exceeds a predetermined limit, opening the Dome cover is prevented and the dome cover arrangement in particular does not require any extension into the tank.

This is solved by a dome cover arrangement according to claim 1 having a flange having a through opening and a cover for closing the through opening. The lid is rotatably mounted relative to the flange about an axis, so that in a first rotary position the lid is positioned above the through-opening, the through-opening is in particular closed, and in a second rotary position the lid is positioned so that the through-opening is free , in particular uncovered and/or unlocked.

According to the invention, at least a first element made up of the cover and flange elements has at least one encompassing element, wherein the at least one encompassing element of the cover and/or the at least one encompassing element of the flange is each set up to be the other element made up of the cover and flange in the first rotary position , on which this at least one encompassing element is not arranged, to at least partially enclose on the side facing away from the first element. The other element consisting of cover and flange has a recess on the side facing away from the first element in the direction of the first element, the at least one encompassing element and the recess being designed and arranged in such a way that in the first rotary position in a first, removed position of the cover and flange, the encompassing element engages in the recess and that in the first rotary position in a second, approximate position of the cover and flange, the encompassing element does not engage in the recess in this approximate position. The recess is not formed at the edge, in particular at least partially and/or in relation to the other element made up of the cover and flange, in particular its edge and/or outer edge is not at the edge. Alternatively or additionally, the axis, the other element and the encompassing element are designed and arranged in such a way that the encompassing element sweeps over at least a portion of the recess during rotation from the first to the second rotary position, with a larger distance between the from the first before sweeping The side of the other element and projection facing away from the element is given, as follows. The task is also solved by a tank or boiler according to claim 12, having a dome opening and a dome cover arrangement according to the invention arranged on the dome opening, the dome opening and the through opening being at least partially aligned and / or form a common continuous opening and wherein the dome cover arrangement is set up and arranged to completely close the dome opening in the first rotary position, if necessary using and/or activating and/or applying sealing means, in particular a hollow seal.

The task is also solved by a tank or tank vehicle according to claim 14, having a device for pressurizing the tank or boiler and / or a device for pressurizing and venting the cavity of the hollow seal with gas and / or fluid.

We also solved the problem by a method according to claim 15 for preventing the opening of a, in particular automatically openable and closable, dome lid of a tank or boiler, the dome lid being set up in particular for opening and closing by rotation about an axis, by means of at least one Enclosing element and a recess, in particular not at the edge, by reaching behind the surrounding element behind the recess, in particular an engagement of a projection of the surrounding element in the recess, the opening and / or rotation for opening is prevented, the gripping behind the surrounding element behind the recess, in particular at least partially by loading the tank or boiler, in particular with the dome cover closed, in particular by the pressure in the tank or boiler due to the loading, and / or by loading a cavity of a hollow seal of the dome cover and / or tank and / or boiler and /or is caused by pressurizing the tank and/or boiler and a cavity of a hollow seal. The dome cover arrangement in particular has a flange and/or a through opening and/or a cover for closing the through opening. The cover is advantageously mounted so that it can rotate about an axis relative to the flange, so that in a first rotary position the cover is positioned above the through-opening, in particular closing it, and in a second rotational position it is positioned so that the through-opening is free. In particular, an opening and closing of the through opening and/or dome opening is also effected at least by rotating between the first and second positions. In particular, the at least one encompassing element is arranged on a first element made up of the cover and flange elements and/or the encompassing element is designed, in the first rotary position, on the other element made up of the cover and flange, on which this at least one encompassing element is not arranged to at least partially enclose the side facing away from the first element. In particular points In particular, the other element made of cover and flange has a recess, in particular not at the edge, on the side facing away from the first element in the direction of the first element, the encompassing element and recess being designed and arranged in particular in such a way that in the first rotational position in a first removed position of the cover and flange, the encompassing element engages in the recess and that in the first rotary position in a second approximate position of the cover and flange, the encompassing element does not engage behind the recess in this approximate position.

In particular, when the encompassing element is brought into the first rotary position in the second approximate position, the encompassing element is positioned, in particular only by rotation, so that it is in the first rotary position with its projection when moving from the second approximate position to the first distant position intervenes in the return. In particular, the encompassing element is positioned in the second approximate position so that its projection is such that it lies in the recess in a projection parallel to the longitudinal axis.

The rotation from the second rotary position is advantageously limited by a geometry, in particular spit-shaped, bulge, in particular an end or an edge section of the bulge, arranged on the other element consisting of cover and flange, so that the cover moves out of the second rotary position during rotation Position is stopped in the first rotary position and / or beyond, in particular in the first rotary position.

The dome cover arrangement is advantageously designed in such a way that the encompassing element, and/or the encompassing element, sweeps over the encompassing element, in particular a projection of the encompassing element, in particular the head of the encompassing element, which is arranged thereon and/or engages in the, in particular non-edge, recess, at least one section and/or at least a section of the edge, in particular two sections and / or at least two sections of the edge, of the recess, in particular not at the edge, in particular at least one edge section and / or terminal section and / or at least one located towards the bulge and / or the opening of the bulge Section of the recess, in particular not at the edge, during the rotation from the first to the second rotational position. In particular, the sweep is carried out in such a way that there is a larger distance between the side of the other element facing away from the first element and the projection before the sweep, than after, especially measured in the direction of Longitudinal extent of the encompassing element, in particular its spacing section, in particular measured starting from the projection.

The dome cover arrangement is advantageously designed in such a way that the encompassing element and/or sweeps over the encompassing element, in particular a projection of the encompassing element, in particular the head of the encompassing element, which is arranged thereon and/or engages in the, in particular non-edge, recess, at least one section and/or at least one section of the edge, in particular two sections and/or at least two sections of the edge, of the recess, in particular not at the edge, in particular at least one edge section and/or terminal section and/or at least one towards the bulge and/or towards the opening of the bulge located section of the, in particular not marginal, recess when rotating from the second to the first rotational position. In particular, the sweep is carried out in such a way that after the sweep there is a greater distance between the side of the other element facing away from the first element and the projection than before, in particular measured in the direction of the longitudinal extent of the encompassing element, in particular its spacing section, in particular measured starting from the projection.

Advantageously, the at least one section, the sections together and/or each of the sections has a length and/or circular arc section length of at least 1 cm, in particular at least 5 cm, and/or circular arc section of at least 10°, in particular at least 20°, and/or or at least 10%, in particular at least 20%, in particular at least 25%, of the width of the bulge and / or opening, the width of the bulge in particular parallel to the width of the opening at a distance from the opening of less than 10% of the width of the opening is measured and / or the width of the opening is the largest opening width, in particular the longest extension of the opening in a plane parallel to a plane orthogonal to the axis. In particular, in the first, remote position of the cover and flange, the section and/or the section of the edge of the recess, in particular not at the edge, blocks the rotation from the first rotary position in the direction of the second rotary position by the encompassing element, in particular by a positive connection between the encompassing element, in particular its head, and the section and/or section of the edge, which in particular prevents the through opening from being released. In particular, in the first rotary position, the section and/or section of the edge of the, in particular non-edge, recess blocks in the second, approximate position of the cover and flange During the rotation from the first to the second rotary position, the encompassing element does not, but rather the encompassing element sweeps over in particular the section and/or the section of the edge, whereby the through opening is released in particular by rotation from the first to the second rotary position of the cover.

The method is advantageously carried out using a dome cover arrangement according to the invention and/or a tank and/or boiler and/or vehicle according to the invention. Advantageously, the dome cover arrangement according to the invention and/or the tank and/or boiler according to the invention and/or the vehicle are set up to carry out the method.

Advantageous embodiments of the objects according to the invention and their components and the method according to the invention and the means used for this are described below.

In general, several surrounding elements can be provided. One or some of these can be arranged on the cover and/or one or some on the flange.

The encompassing element advantageously has a, in particular elongated, spacing section with a first, in particular terminal, section adjoining the spacing section and which forms the projection, the first section extending at least partially transversely to the extent of the spacing section, in particular the transverse extent of the first section intervenes in the return. The projection is in particular designed in at least two opposite directions, in particular in all directions of a plane, in particular transverse to the longitudinal extent of the spacing section and/or parallel to the plane in which the through opening lies, in particular circular. The projection is in particular formed in at least two opposite directions, which lie transversely to the longitudinal extent of the spacing section and/or parallel to the plane in which the through opening lies, and transversely to the direction of rotation from the first to the second rotary position. In this case, transverse is understood to mean, in particular, an angle between 70 and 110 and/or -70 to -110 degrees to the tangent to the rotation from the first to the second rotary position in the first position on the encompassing element.

The encompassing element advantageously has a, in particular elongated, spacing section, with a projection, in particular a head, on a first, in particular terminal, section of the spacing section at least partially encompassing the spit-shaped bulge and / or for engaging in the recess on the other element.

The projection advantageously has a width, in particular a width perpendicular to the longitudinal extent of the spacing section and/or parallel to the plane in which the through opening lies, and in particular also transversely to the direction of rotation from the first to the second rotary position, which is wider is than the width of the encompassing element over at least 20%, in particular at least 25%, in particular at least 50%, of its elongated extent.

In particular, the shape of the at least one encompassing element has the shape of an anchor with the anchor tip as the first section. In particular, the encompassing element is a locking bolt and/or a clamp, with the head of the locking bolt and/or one end of the clamp engaging in the recess.

The axis and at least one encompassing element are advantageously arranged in such a way that the encompassing element moves from the first to the second rotary position on a circular path in a first circular direction, in particular the through opening opening, and from the second to the first rotary position on a, in particular the circular path moves in a second circular direction, in particular closing the through opening, which is directed opposite to the first.

In particular, the projection and recess are designed such that the recess accommodates the projection and/or the recess surrounds the projection on at least three, in particular four, in particular five, sides, in particular with a clearance of less than 5 mm each.

A non-marginal recess is to be understood in particular as one that has a non-marginal section. The term return is to be understood in particular as a return that has a return edge. A plurality of steps thus have step surfaces and recessed edges arranged between them from one step surface to the next. In this case, the distinction between surface and flank can be made in particular based on the orientation to the axis of rotation between the first and second rotary positions and/or to the plane of the through opening.

A section is considered non-marginal in particular if and only if it is not marginal in relation to the outer edge of the other element. The term outer edge means, in particular, the peripheral edge in a plane parallel to the plane of the through opening and/or perpendicular to the axis of rotation.

It is particularly advantageous for the other element consisting of cover and flange to have a bulge, in particular a spit-shaped bulge, in particular for at least partially receiving at least one encompassing element. Advantageously, the spit opens in one direction, this direction lying in a plane parallel to the plane in which the through opening is arranged. Alternatively or additionally, the opening of the spit is arranged in such a way that the encompassing element is moved through the opening into the bulge when the lid rotates relative to the flange from the second to the first rotational position. Alternatively or additionally, the opening of the spit is arranged in such a way that the encompassing element is moved out of the bulge through the opening when the lid rotates relative to the flange from the first to the second rotational position. Alternatively or additionally, the opening of the spit has an opening angle of less than 180°.

In particular, the spit-shaped bulge has a stop surface for limiting the rotation of the lid and/or for blocking the rotation of the lid when the lid reaches the first rotational position relative to the flange.

Advantageously, in the first rotary position in the first, remote position of the cover and flange, a part of the encompassing element, in particular its head and / or projection, positively engages with the other element of the flange and cover through the non-edge recess, in particular in a plane parallel to the passage opening.

Advantageously, the encompassing element, in particular all encompassing elements, is rigid, in particular torsionally rigid, and/or rigidly and/or firmly connected to the first element consisting of the flange and cover. In particular, the orientation of the encompassing element is not pivotable relative to the first element consisting of flange and cover, rather at least one encompassing element, in particular all of them, extends from the first element consisting of flange and cover, in particular perpendicular thereto and/or to the plane in which the through opening lies, in the direction of the other element consisting of flange and cover

Advantageously, the encompassing element, in particular all encompassing elements, are connected to the first element consisting of flange and cover, in particular rigidly, in particular torsionally rigidly, and/or rigidly and/or firmly, in a connecting section of the first element. The encompassing element advantageously has the projection at an end of the encompassing element facing away from the connecting section, in particular head, wherein the projection is spaced from the connecting section, in particular to form a spacing section of the, in particular elongated, section of the encompassing element. Advantageously, between the connecting section and the projection, there is a sleeve which envelops the spacing section and which distances the connecting section from the projection and/or is rotatable about its longitudinal extent for particularly stable spacing and/or to secure the stop of the encompassing element in the bulge and/or to reduce the resistance when retracting of the encompassing element arranged in the bulge.

The at least one encompassing element is advantageously designed and arranged in such a way that the distance, in particular the distance, in particular in the first rotary position and second rotary position, between an edge of the projection closest to the connecting section and the connecting section, and/or the length of the spacing section constant and / or unchangeable, in particular in the and / or the length and / or in the and / or the orientation of the distance and / or the spacing section relative to the first element made of lid and flange, in particular during rotation, in particular when rotating the lid from the first to the second and/or from the second to the first rotary position and/or in the first and/or the second rotary position and/or in the open and closed state.

In particular, the at least one encompassing element is aligned with the first element consisting of a cover and a flange for opening, closing and/or closing the dome cover arrangement and/or during rotation from the first to the second rotary position and/or from the second to the first rotational position not changed. In particular, the distance between an edge of the projection closest to the connecting section and the connecting section and/or the length of the spacing section is not changed when opening, closing and closing the dome cover arrangement.

If the lid is pressurized in the first rotational position, which exerts a force on the lid that is directed in the direction of the first remote position of the lid and flange, and the pressure in particular exceeds a predetermined limit and/or the pressure difference across the lid and/or between above and below the lid, in particular between the tank and/boiler interior and the tank and/boiler exterior, and/or the pressure difference between above and below the lid exceeds a predetermined limit, the encompassing element engages behind the Jump back. This prevents the lid from rotating and, in particular, prevents it from being opened. The dome cover arrangement and/or the cover and/or flange are designed in such a way that there is a seal between the cover and the flange even in the removed position. For this purpose, the cover and/or flange can have one or more sealing element(s), for example one or more elastic sealing element(s). In particular, at least one element comprising the flange and the cover has, arranged towards the other element, a circumferential and/or inflatable hollow seal, in particular this element, the hollow seal in particular having a cavity for the application of gas and/or fluid and the dome cover arrangement in particular Has means for introducing gas and / or fluid into the cavity, in particular a feedthrough through a flange and / or cover. In this way, in the inflated or pressurized state, not only can a reliable seal be achieved even in the removed position, but additional force can also be applied to pre-tension the device in the removed position. In addition and/or alternatively, when the gas and/or fluid is drained and/or sucked out, a reduction in friction and/or material protection can be achieved during rotation from the first rotary position, in particular into the second rotary position, in particular by reducing the Extension of the hollow seal between the cover and the flange.

With particular advantage, the gripping behind prevents the rotation about the axis out of the first rotary position and/or into the second rotative position and/or a gripping element and/or recess is formed, the rotation about the axis out of the first rotary position and/or into the second rotational position. This is an easy way to prevent opening.

In particular, the rotatable bearing enables, in addition to the rotation, the movement between the first distant and second approximate positions and/or the movement between the first distant and second approximate positions is a linear movement at least partially along the axis of rotation between the first and second rotary Position and/or the rotatable bearing, in particular a movement along the axis and a movement by tilting the cover or flange against the axis. In particular, the reaching behind and/or the movement between the first distant and second approximate positions is achieved by a linear movement at least partially along the axis of rotation between the first and second rotary positions and/or the rotatable bearing, in particular by a linear movement along the axis and a tilting of the cover or flange against the axis.

In particular, the distance between the first distant and second approximate positions, in particular along the axis of rotation, and or the length of the linear movement is between 700mm and 800mm.

In particular, the rotation between the first and second rotary positions is a rotation of 90° to 100°, in particular along the first, opening circular direction.

Advantageously, the distance in the first remote position between the flange and the cover is between 5mm and 15mm and/or in the second approximate position the distance between the flange and the cover is between 5mm and 7mm and/or the recess has a height in the range of 1mm to 3mm and/or the encompassing element has a corresponding projection or recess, in particular in the range of 4mm to 6mm and/or the recess of the flange and/or cover and/or the encompassing element runs parallel to the axis of rotation of the rotatable bearing and/or to the Axis of rotation between first and second rotational positions.

Advantageously, the through opening has a size in the range of DN400 to DN800 and/or a diameter in the range of 380mm to 780mm.

Advantageously, a plurality of auxiliary clips are and/or are provided on at least one first element consisting of cover and flange, each of which is connected to the other element, in particular two to five are connected to the cover and/or two to five are connected to the flange , which are set up, in the first rotary position, the other element made of cover and flange, on which this respective auxiliary clip is not arranged, at least partially on the side facing away from the element made of cover and flange on which this respective auxiliary clip is arranged to enclose and/or, in particular in the first rotary position, to prevent movement from the second approximate position beyond the first distant position, in particular together with the encompassing element, and/or are designed to do so.

In particular, the flange and/or cover is/are/will have a radial play between 0.02 and 0.08 mm, in particular between 0.03 and 0.7 mm, and/or with a play in the longitudinal direction of the axis between 0, 1 and 0.5 mm, in particular between 0.15 and 0.35 mm, fixed on the axis and / or axis, flange and / or cover designed so that they prevent tilting of the flange and / or cover against the axis with a maximum tilt in the range of 0.5° to 1°. This makes it possible to rotate and/or tilt and/or move between the positions in a simple and reliable manner.

Advantageously, a circumferential and/or inflatable hollow seal, in particular the first element, is/is arranged at least on a first element consisting of the flange and cover towards the other element, the hollow seal in particular having a cavity for the application of gas and/or fluid and the dome cover arrangement in particular has means for introducing gas and / or fluid into the cavity, in particular a feedthrough through a flange and / or cover.

The flange is/is cast with particular advantage. This enables simple, cost-effective and pressure-resistant production and a long service life.

With particular advantage, the dome cover arrangement according to one of the preceding claims does not protrude into the tank or boiler, the dome opening of which it closes, and/or it is designed accordingly. This allows for better loading, easier cleaning and installation and makes it possible to avoid further opening and/or passage through the wall of the tank or boiler.

With particular advantage, the cover is designed to be pressure-tight and/or pressure-resistant and/or it is designed so as not to impair the unloading of a tank or boiler that it closes through another opening by pressurizing the tank or boiler. With such a configuration, the tank can be unloaded by applying pressure through a further opening, for example in a lower area than the dome cover arrangement. In particular, by pressurizing the tank or boiler, especially when the dome cover arrangement is closed, a discharge is effected through a further opening. The tank or boiler and/or the tank or boiler vehicle is advantageously set up for unloading by pressurizing the tank or boiler, in particular through a further opening of the tank or boiler and/or it includes a device for pressurizing the tank or boiler Pressure.

Advantageously, the tank, boiler, dome cover arrangement and/or tank or boiler vehicle has means for pressurizing the tank or boiler with gas and/or fluid and/or means for pressurizing the tank or boiler with gas and/or fluid and/or venting, pressure relief and/or or pumping out the cavity of the hollow seal.

The method advantageously includes pressurizing the cavity of the hollow seal with gas and/or fluid and/or venting, depressurizing and/or pumping out the cavity of the hollow seal.

The axis of rotation between the first and second rotary positions is advantageously arranged parallel to, in particular the highest, axis of symmetry or normal of the through-opening and/or at a distance of 200 to 500 mm from the through-opening.

The clamps and/or auxiliary clamps are advantageously hold-down devices.

Advantageously, the clamp and/or auxiliary clamp are U-, T- or L-shaped, with the leg length being unequal in the case of a U-shaped design.

An embodiment is preferred in which, in the first rotary position, the encompassing elements, in particular the clamps, and auxiliary clamps, which are connected to the cover, are in a first circular sector of a circle perpendicular to the axis of rotation between the first and second rotary positions and with the center in the center of the cover and/or the through opening and/or the encompassing elements, in particular clamps, and auxiliary clamps, which are connected to the flange, lie in a second circular sector of a circle perpendicular to the axis of rotation between the first and second rotary positions and with the center in the center of the lid and/or the through opening, wherein the circular sectors in particular do not overlap and/or each include a circular arc angle of less than 180°, in particular less than 135°, and/or that the axis of rotation is between the first and second rotary Position the extension of a radius of the circle that lies between the first and second circular sectors, intersects vertically and / or the two circles and / or their radii are identical and / or one of the two circles with the outer circumference of the lid and / or one of the two Circles are identical to the outer circumference of the flange.

An actuator, in particular pneumatic or electric, is advantageously provided, which is set up and arranged to effect the movement from the first to the second rotary position and from the second to the first rotary position.

Preferably, a first arm is arranged on the flange and a second arm on the cover and the axis of rotation between the first and second rotary positions is fixed on the first and second arms and in particular a third arm is arranged on the flange or on the cover and an actuator is arranged on the first or second, in particular with a first end, and on the third arm, in particular with a second, the first end opposite end, wherein the actuator is fixed to be fixed to an arm of the flange and an arm of the lid.

The hollow seal is advantageously arranged between the flange and the cover and/or designed in such a way that it is arranged circumferentially around the passage opening in the closed state. The hollow seal is preferably an inflatable seal and/or a fabric-reinforced seal and/or a rubber seal. In particular, in the pressurized state, it has a cross-section perpendicular to its longitudinal extent, in particular arranged in a circular shape, a round or oval section with a cavity therein and a section arranged on this round or oval section outside the cavity, in particular made of solid material and / or without Cavity formed web or beard, which is arranged in particular opposite a device for fixing the seal and / or oriented towards the flange or cover. In particular, the seal has a material prestress of such a kind that it collapses the circular or oval section in the pressurized state or in the rest state, so that the height of the seal in cross section is reduced, in particular by one to two thirds of the height of the round or oval section and/or between 10 and 20 mm. In particular, the cavity has an area of between 1 and 15 cm ² in cross section. In the pressurized state, the cavity of the seal is pressurized, in particular with a pressure in the range of 3 bar to 5 bar.

In particular, the hollow seal is arranged and designed so that in the pressurized state it is set up to have a force of between 1.8k kN and 3.7 kN pushing the flange and the cover apart and/or a pressure pushing the flange and the cover apart in the range from 2 bar to 4 bar.

Means for pressurizing the hollow seal and for relieving pressure on the hollow seal are advantageously provided and fluidly connected to the cavity of the hollow seal, for example a compressor, lines and/or valves.

Preferably, the cover and/or the flange is held in a direction of the longitudinal extent of the axis of rotation between the first and second rotational position on this and/or a bolt serving as an axle by a castle nut, which is in particular by a split pin which passes through the axle and the castle nut, in particular its grooves, is guided against rotation relative to the bolt and/or Axis is secured. In particular, the castle nut has a groove at least every 80°, in particular every 60°.

In particular, rotating the castellated nut on the axis by one groove corresponds to a displacement in the longitudinal direction of the axis of rotation between the first and second rotational positions between 0.1 and 0.5 mm.

Advantageously, the dome cover arrangement and/or the axis of rotation between the first and second rotary positions does not extend into the tank or boiler and/or not below the flange, when the flange is arranged horizontally and/or with the axis vertical and the cover above the flange. In particular, the dome cover arrangement contains only one cover and/or only the flange and one cover are articulated on the axle and/or in particular a maximum of one cover is articulated. In particular, the lid is located above the flange and/or outside the tank and/or boiler and/or is set up accordingly to the dome lid arrangement.

The extension of the dome cover arrangement is advantageously limited in a longitudinal direction of the axis of rotation between the first and second rotary positions by the flange and in particular in another direction by the cover, possibly with the exception of the actuator and its fastening.

In addition to rotation about the axis, the cover can advantageously be pivoted relative to the flange about a pivot axis arranged transversely, in particular perpendicularly, to the axis, in particular tiltable, in particular by more than 45 °, in particular by at least 90 °. In particular, the dome cover arrangement has at least one hinge and/or at least one hinge is arranged between the cover and the flange, by means of which the pivot axis is realized. In particular, the pivot axis runs parallel to a plane in which the through opening is arranged.

• Cr: 0,05-0,25 Massenprozent,
• Cu: max. 0,15 Massenprozent,
• Fe: max. 0,50 Massenprozent, insbesondere 0,4-0,5 Massenprozent,
• Mg: 3,5-5 Massenprozent,
• Mn: 0,2-1 Massenprozent,
• Si: max. 0,60 Massenprozent,
• Ti: max. 0,2 Massenprozent, und
• Zn: max. 0,3 Massenprozent

gefertigt, insbesondere gegossen. Dies ermöglicht eine langfristig druckfeste Herstellung im Gussverfahren. Insbesondere handelt es sich bei Domdeckelanordnung und/oder Flansch und insbesondere auch den Armen um Gussteile. Insbesondere ist der Flansch einteilig gegossen, insbesondere zusammen mit mindestens einem, insbesondere zwei Armen. Insbesondere ist der Deckel einteilig gegossen, insbesondere zusammen mit mindestens einem Arm.With particular advantage, the cover and/or flange and in particular the arms are made of EN AW-5086, AW-5083 and/or AW-6082, in particular corrosion-adapted and/or made of an alloy, in addition to aluminum or aluminum and others, the following

• Cr: 0.05-0.25 mass percent,
• Cu: max. 0.15 mass percent,
• Fe: max. 0.50 percent by mass, in particular 0.4-0.5 percent by mass,
• Mg: 3.5-5% by mass,
• Mn: 0.2-1 mass percent,
• Si: max. 0.60 mass percent,
• Ti: max. 0.2 mass percent, and
• Zn: max. 0.3 mass percent

manufactured, especially cast. This enables long-term pressure-resistant production using the casting process. In particular, the dome cover arrangement and/or flange and in particular the arms are cast parts. In particular, the flange is cast in one piece, in particular together with at least one, in particular two arms. In particular, the lid is cast in one piece, in particular together with at least one arm.

It is particularly advantageous for the connection or connections for pressurizing the hollow seal to be arranged in the slipstream, in particular with respect to the wind of the vehicle in the forward direction of travel, of the flange and/or cover.

It is particularly advantageous for the dome cover arrangement to be set up or to prevent the cover from being opened and/or moved, in particular by the actuator, out of the first rotary position through the interaction of the encompassing element, in particular the clamp, and the recess , as long as a force is exerted on the lid, in particular by the hollow seal and/or the internal pressure in the tank or boiler, which exceeds a predetermined force.

The recess is advantageously designed so that it recesses parallel and/or at an angle of +/- 0 to 10° to the longitudinal extent of the axis of rotation between the first and second rotary positions and/or a recess depth, in particular through a continuous recess flank and / or return side, between 1 to 6 mm, in particular 2 to 4 mm. This return side or return flank then extends in particular perpendicular and/or at an angle of +/- 90 to 80° to the plane in which the through opening lies, and/or parallel and/or at an angle of +/- 0 to 10° to the longitudinal extent of the axis of rotation. In particular, the encircling element is designed so that in the first rotary position in the first remote position of the cover and flange, in particular with at least one surface section of the surface of the enclosing element parallel to the recessed flank and/or recessed side, it rests on the recessed flank and/or recessed side , in particular over 1 to 6 mm, in particular 2 to 4 mm, of the recess depth and/or over a width and/or a circumferential length between 60 and 120 mm.

It is particularly advantageous for the passage opening to have a passage area of between 0.1 and 0.5 m ² .

Fig. 1

eine perspektivische Aufsicht auf eines ersten Ausführungsbeispiels einer erfindungsgemäßen Domdeckelanordnung,

Fig. 2

einen Querschnitt durch eine Klammer und einen Deckel in der ersten entfernten Position von Deckel und Flansch aus Fig 1,

Fig. 3a

einen Längsschnitt von Flansch, Deckel und Hilfsklammer in der zweiten angenäherten Position von Deckel und Flansch,

Fig. 3b

einen Längsschnitt von Flansch, Deckel und Hilfsklammer in der ersten entfernten Position von Deckel und Flansch,

Fig. 4a

einen Querschnitt durch eine Hilfsklammer, einem Flansch und einem Deckel in der zweiten angenäherten Position von Deckel und Flansch

Fig. 4b

einen Querschnitt durch eine Hilfsklammer, einem Flansch und einem Deckel in der ersten entfernten Position von Deckel und Flansch

Fig. 5

einen Querschnitt durch eine Hohldichtung

Fig. 6

einen Querschnitt durch die Rotationsachse

Fig. 7

eine perspektivische Aufsicht auf ein zweiten Ausführungsbeispiels einer erfindungsgemäßen Domdeckelanordnung

Fig. 8a

einen Querschnitt durch Teile eines Deckels und ein Umgreifungselement des zweiten Ausführungsbeispiels der Fig. 7

Fig. 8b

eine Aufsicht auf einen Abschnitt der Unterseite des Flansches aus dem zweiten Ausführungsbeispiels der Fig. 7, den nicht randständigen Rücksprung zeigend.

Further advantages and features of the invention result from the following description of an exemplary embodiment based on the attached schematic figures. Show:

Fig. 1

a perspective view of a first exemplary embodiment of a dome cover arrangement according to the invention,

Fig. 2

a cross section through a bracket and a cover in the first removed position of the cover and flange Fig 1 ,

Fig. 3a

a longitudinal section of the flange, cover and auxiliary clamp in the second approximate position of the cover and flange,

Fig. 3b

a longitudinal section of the flange, cover and auxiliary clamp in the first removed position of the cover and flange,

Fig. 4a

a cross section through an auxiliary bracket, a flange and a cover in the second approximate position of the cover and flange

Fig. 4b

a cross section through an auxiliary bracket, a flange and a cover in the first removed position of the cover and flange

Fig. 5

a cross section through a hollow seal

Fig. 6

a cross section through the axis of rotation

Fig. 7

a perspective view of a second embodiment of a dome cover arrangement according to the invention

Fig. 8a

a cross section through parts of a lid and a surrounding element of the second exemplary embodiment Fig. 7

Fig. 8b

a top view of a section of the underside of the flange from the second exemplary embodiment Fig. 7 , showing the non-marginal recess.

In the figures, the same elements are given the same reference numbers.

In Fig. 1 An advantageous first exemplary embodiment of a dome cover arrangement according to the invention is shown in a top view of the cover 1. The dome cover assembly is shown in the first rotary position. The flange 2 is shown below the cover 1. The flange 2 encloses and surrounds the (not shown) cathedral opening or the passage opening. Such a flange 2 is usually arranged on a tank or boiler (not shown). In the first rotary position, the cover 1 completely covers the dome opening or the through-opening, whereby the dome opening or through-opening is closed, in particular fluid-tight or gas-impermeable. The cover 1 can be rotated about the axis of rotation 6 relative to the flange 2 and the first arm 9 arranged on the flange, and thus relative to the dome opening or through opening. An actuator 15 can be used for this. This is at one of its ends, a first end, with a second arm 10, which is arranged on the cover 1, and at another end, a second end, which is opposite the first end, with a third arm 11, which is attached to the flange 2 is arranged, connected. The actuator in particular comprises a linear drive, so that when the actuator is activated, its longitudinal extent changes, so that the second arm 10 is moved against the third arm 11, whereby the cover 1 rotates about the axis of rotation 6 against the flange 2 and the through opening or .The cathedral opening opens or becomes free. The opening direction of the lid is as in the Figure 1 shown.

A clamp 3, as an embodiment of the encompassing element according to the invention, is arranged on the flange 2, as well as two auxiliary clamps 4. Three auxiliary clamps 5 are arranged on the cover 1. The three auxiliary clips 5 are arranged on a circular sector of the lid 1, which circular sector corresponds to the circular sector of the surface of the lid 1, which corresponds to half of the circle of the surface of the lid 1, which half is half of the surface of the lid 1, which is in the direction the opening direction. This arrangement of the three auxiliary clamps 5 within this sector of the circle ensures that the lid 1 can be moved into the second rotary position because it moves the auxiliary clamps 5 with it. The clamp 3 and the auxiliary clamps 4 are arranged in a sector of the circle, which lies on the other half of the circle. This prevents the dome cover arrangement from being rotated/moved from the second rotary position beyond the first rotary position.

In the Figure 2 is a detailed representation of a clamp 3 according to the invention and a cover 1 using a cross section through a part of the clamp 3 and the cover 1 along the section line AB Figure 1 . The clamp 3 is arranged on the flange 2 (not shown) and with this, for. B. connected by screws (not shown). The clip 3 engages behind part of the lid with a projection at its end, in that the clip 3 does not fit into one with this end edge recess 7 of the lid 1 intervenes. The non-edge recess 7 ensures that the clip 3 cannot slide off the lid 1 in the direction of the edge of the lid. The cover 1 is thus fixed by means of the clamp 3 in such a way that its rotational movement around the flange 2 or the bolt is restricted or prevented. In principle, however, it is also possible that the clamp 3 would be arranged on the cover 1 and thus the clamp 3 would engage in a non-edge recess 7 of the flange 2. However, such a bracket should be in the other half of the circle than in the Figure 1 shown, so that it is prevented that the dome cover assembly can be rotated/moved from the second rotary position beyond the first rotary position, and so that the dome cover assembly can be moved from the first rotary position into the second rotary position.

In the Figure 2 the arrangement is shown in the removed position. By lowering the cover 1 into the approximate position, the engagement of the clamp behind the recess of the cover 1 can be canceled.

The lid 1 tapers starting from the in the Figure 2 Thickness or height shown on the left initially moves to the right and thus forms a recess. It is not necessary that this is made in one piece. The area of greater thickness or height could also be realized, for example, by screwing on a web or bracket, for example. In the Figure 2 The lid thickens again as it continues to the right. However, this is not absolutely necessary.

In Figures 3a and 3b a section through the cover and the flanges is shown in a view of an auxiliary clamp 4, arranged on the flange 2. The cover 1 and the flange 2 are in the first rotary position, i.e. in the one in which the cover 1 covers the dome opening or through opening. The seal arranged between the cover and the flange is not shown.

In the exemplary embodiment, the cover has a terminal recess into which the auxiliary clamp 4 can engage and thereby receives lateral guidance in the figure and thereby further stabilizes the arrangement.

In Figure 3a the state during the second approximate position between cover 1 and flange 2 is shown.

In Figure 3b the state during the first removed position between cover 1 and flange 2 is shown.

In the Figures 4a and 4b the auxiliary clamps 4 are off again Figures 3a and 3b shown. This auxiliary clip 4 differs from the auxiliary clips 5 in that the auxiliary clip 4 is attached to the flange 2, whereas auxiliary clips 5 are attached to the cover, see also Figure 1 For this. In Figure 4a the state of the second approximate position of the cover and flange is shown, in which Fig 4b the state of the first removed position of the cover and flange is shown, both in the first rotary position.

The auxiliary clamp 4, arranged on the flange 2, engages over and partially encloses the side of the lid 1 facing away from the flange 2. Here the lid has the optional terminal recess into which the auxiliary clamp 4 is located Figure 4b intervenes. Due to the second approximate position of cover 1 and flange 2 in Fig. 4a However, the cover is not restricted or limited by the auxiliary clip 4 and the auxiliary clip does not engage in the terminal recess arranged on the cover 1.

The lid 1 and the flange 2 can be moved from the second approximate position of the lid 1 and the flange 2 into the first distant position of the lid 1 and 2 due to an overpressure in a container below the lid 1, a through opening of which is enclosed by the flange 2 Flange 2 can be spent.

In an overlap area of the cover 1 and flange 2 located in the first rotary position, a hollow seal 12 is arranged on the cover 1, which extends in the direction of the flange 2 and which is arranged on the side of the cover 1 facing the flange 2. There is a line to this hollow seal 12, e.g. B. a gas pipe (not shown). The hollow seal 12 has a cavity 17 which is filled with a fluid, e.g. B. Air can be filled or emptied, in particular vented, using the line. It is set up together with the cover 1 and the flange 2 to form the dome opening or the through opening, e.g. B. a container, a tank, boiler, or a tank or boiler vehicle, to be completely closed in the first rotary position, at least in the second approximate position but in particular also in the first remote position of the cover 1 and flange 2. For this purpose, the Hollow seal completely enclosing the through opening or dome opening or arranged along the entire circumference of the flange 2, but not necessarily in the area of the largest circumference. It is also possible that by applying pressure, i.e. filling the cavity 17 of the hollow seal 12, the hollow seal allows the cover 1 to be moved out of the second approximate position of cover 1 and flange 2 to the first distant position of cover 1 and flange 2 supported or alone. In Fig 4b the first removed position of cover 1 and flange 2 is shown, with no pressurization of the hollow seal 12 or the cavity 17 of the hollow seal 12 has been emptied, or the fluid therein, e.g. B. air, was drained and/or sucked out, so that the hollow seal 12 does not extend to the side of the flange 2 facing the cover 1.

The hollow seal 12 Figs 4a and 4b is in Figure 5 shown in detail. A line (not shown) on the hollow seal 12 enables emptying or filling with fluid, e.g. B. air, of the hollow space 17, so that the lower part of the hollow seal 12 is relative to the upper part of the hollow seal 12, which is firmly in the lid 1, as in the Figures 4a and 4b shown, arranged, moved.

A detailed representation of the parts located on the axis of rotation between the first and second rotary positions, i.e. the axis of rotation 6, is shown in Figure 6 shown by means of a cross-sectional representation through the axis of rotation 6. A bolt 18 acting as an axis is arranged in the axis of rotation 6 and is guided both through a round recess in the first arm 9, arranged on the flange 2, and through a round recess in the second arm 10, arranged on the cover 1. On the part of the bolt 18 that projects beyond the second arm 10, a castle nut 13 holding the bolt 18 is arranged, through which in turn a split pin 14 is guided to fix the castle nut 13 to the bolt 18 and prevent the castle nut 13 from rotating against the bolt 18 . The split pin 14 is guided through the castle nut 13 through one of several grooves arranged in the castle nut 13 and a hole through the bolt. At the other end of the bolt it is secured with a snap ring 19.

By turning the castle nut before securing it with the cotter pin 14 and then securing it with the cotter pin, a desired clearance can be set, whereby the maximum distance between cover 1 and flange 2 on the bolt along the axis of rotation 6 in the first, removed position from cover 1 and flange 2 can be adjusted. To adjust the distance between the flange and the cover, washers are arranged between them on the bolt. By selecting the recesses in the cover and flange in relation to the diameter of the bolt as well as selecting the thickness of the washers and the maximum distance, the maximum tilting of the cover and flange against each other and the linear movement can be achieved along the axis of rotation and thus determine the maximum movement between the first distant and second approximate positions.

In the Figure 7 a second exemplary embodiment of a dome cover arrangement according to the invention is shown, in which, among other things, instead of a usual clamp, a rotationally symmetrical clamp 3 or an anchor 3 or a locking bolt 3 is used as the surrounding element 3. In this embodiment, this locking bolt 3 is arranged on the cover. The dome cover arrangement is shown in the second rotary position of the cover, in which the through opening 24 is released, allowing access to a tank, for example. When the lid 1 rotates from the second to the first rotational position of the lid, the encompassing element 3 is placed in a receptacle, here a spit-shaped bulge 22. Furthermore, this exemplary embodiment has a pivot axis with which the cover can be pivoted relative to the flange in addition to the rotation about the axis 6 also about the pivot axis 25 and can therefore be folded open and closed, for example. This allows easy access to the underside of the lid.

In the in the Fig. 7 In the embodiment shown, two spit-shaped bulges 22 are arranged on the flange 2, wherein the openings of the spit, in particular the opening width, the opening angle and / or the opening direction, are each set up and arranged in such a way that when the lid 1 rotates of the second into the first rotary position, a surrounding element 3 is moved through the opening of the respective spit into the spit-shaped bulge 22. For this purpose, the spit-shaped bulges 22 are arranged adjacent to an outer edge of the flange and each have an opening towards the edge of the flange. Furthermore, an auxiliary clamp 4 is arranged on the flange 2, which is designed in the shape of a strip. This limits the first rotational position in at least one direction. The auxiliary clamp 4 is further designed in such a way that, in the first rotary position in the distant position, the translational movement along the axis 6 away from the approximate position is restricted and/or prevented. This increases the stability and the possible pressure load of the dome cover arrangement. This is particularly advantageous when a pivot axis 25 is provided, but also generally for saving material on the axis 6 and the pivot arm.

In the Figure 8a is a cross-sectional view of a detailed representation of the encompassing element 3 arranged on the cover 1 Fig. 7 , not shown to scale.

The cover 1 and the flange 2 are also shown in detail in the approximate position in the first rotary position. The encompassing element 3 is, for example, a bolt 3 which is connected and fastened to the lid in a torsionally rigid and rigid manner in a connecting section 22 of the cover 1, for example by means of a thread and a nut at one end of the bolt 3. In the exemplary embodiment, the longitudinal direction of this encompassing element 3, the bolt 3, with its spacing section and its spacing section arranged between the connecting section and the projection extends orthogonally to the surface extent of the cover 1. At the other end, the end opposite the nut, the bolt 3 has a Projection, for example in the form of a head and a washer. This projection is spaced apart from the connecting section to form a spacing section, the distance between the projection and connecting section remaining unchanged and/or unchangeable during rotation and during opening, closing and closing. In the arrangement shown, the spacing section of the bolt 3 surrounded by a sleeve has been moved through the opening of the spit-shaped bulge 22 by rotation from the second to the first rotary position.

When moving from the approximate position shown to the remote one, by moving the cover 1 upwards in the drawing, the projection 20 of the bolt moves into the non-edge recess on the flange. The projection of the bolt 3 thus engages in the non-edge recess 7. This creates a positive connection between the projection and the non-edge recess, for example in that the outline of the projection is flush with the boundary, the edge 23, of the non-edge recess.

In the Figure 8b is a top view of the non-edge recess of the dome cover arrangement according to the exemplary embodiment Figure 7 shown. Shown is the underside, i.e. the side of the flange facing away from the cover, which has the non-edge recess. The non-edge recess is designed in such a way that its contour and/or outline and/or edges 23 encloses the recess of a bulge 22, here the spit-shaped bulge 22, at least partially, namely to more than 180° or approximately 250°. Some of the recess may be marginal in relation to the recess, but not in relation to the flange, which is the point here. The recess is spaced in all directions from the outer edge or edge of the flange and thus not marginal. There is therefore no recess on the outermost edges of the flange. The recess, which is therefore not at the edge, has an edge or a section of the edge of the recess which is not at the edge and/or which is directed in the direction of the opening and/or is located towards the bulge and/or towards the opening of the bulge. When the lid rotates from the first rotary position towards the second rotary position, the encompassing element, in particular its projection, must sweep over this edge and/or this section. The swept arc section of the edge is marked by cake-shaped dashed circle segments. However, sweeping is only possible in the second, approximate position of the lid, since in the first, distant position of the lid, the encompassing element, in particular the projection, is blocked in its direction of rotation by the edge and / or the section, in particular due to a positive connection between projection and edge and/or a portion of the edge of the non-marginal recess. List of reference symbols: 1 Lid 2 flange 3 Enclosure element4 auxiliary clamp 5 Auxiliary clamp 6 Axis of rotation 7 Set back, not marginal 8th Gas introduction agent 9 first arm 10 second arm 11 third arm 12 Hollow seal 13 Castle nut 14 sapwood 15 actuator 16 Jump back 17 cavity 18 bolt 19 snap ring 20 Head of the encompassing element 21 connection section 22 Spit-shaped bulge 23 Edge of the non-marginal recess 24 Passage opening 25 Pivot axis 26 Outer edge

Claims (15)

1. A dome lid assembly comprising a flange (2) having a through opening (24) and a lid (1) for closing the through opening (24), the lid (1) being rotatably mounted about an axis (6) relative to the flange (2) such that in a first rotational position the lid (1) is positioned over the through opening (24) and in a second rotational position the lid (1) is positioned such that the through opening (24) is unobstructed,

   wherein at least one first element of the elements - i.e. the lid (1) and the flange (2) - has at least one embracing element (3), in particular an anchor, in particular a clip, which is set up to at least partially embrace, in the first rotational position, the respective other element of the lid (1) and flange (2), on which said at least one embracing element (3) is not arranged, on the side facing away from the first element,

   characterised in that said at least one embracing element (3) is arranged on the side facing away from the first element,

   that the other element consisting of lid (1) and flange (2) has a setback (7) on the side facing away from the first element in the direction of the first element,

   wherein the embracing element (3) and the setback (7) are formed and arranged such that, in the first rotational position, in a first, distant position of the lid (1) and the flange (2), a projection (20) of the embracing element (3) engages behind and/or into the setback (7), and that, in the first rotational position, in a second, approximate position of the lid (1) and the flange (2), the embracing element (3) does not engage behind the setback (7) in this approximate position,

   wherein the recess is at least partially peripheral relative to the other member and/or the axle, the other member and the wrap-around member are configured and arranged such that the wrap-around member sweeps over at least a portion of the recess during rotation from the first rotational position to the second rotational position,

   whereby a greater distance between the side of the other element facing away from the first element and the projection is given before the overcoat than after.
2. A dome lid assembly according to claim 1, wherein the rear engagement prevents rotation about the axis (6) out of the first rotational position and/or into the second rotational position.
3. A dome lid assembly according to one of the preceding claims, characterised in that the other element of lid (1) and flange (2) has a bulge (22), in particular a tapered bulge,
   wherein said groove opens in particular in a direction, said direction being in a plane parallel to the plane in which said through opening (24) is arranged, and/or said opening is arranged such that said embracing element (3) is brought through said opening into said bulge (22) upon rotation of said lid relative to said flange from said second to said first rotational position, and/or said opening has an opening angle of less than 180°.
4. A dome lid assembly according to any one of the preceding claims, characterised in that the embracing member (3) has an elongate extent and/or an elongate portion,

   wherein a projection (20), in particular a head, is arranged on one, in particular terminal, section of the elongated extension and/or of the elongated section for at least partially engaging around the tapered bulge (22) and/or for engaging in the setback (7) on the other element,

   wherein the projection (20) has a width, in particular measured perpendicularly to the elongate extent and/or the elongate portion of the embracing element (3), which is wider than the width of the embracing element (3) over 25%, in particular 50%, of its elongate extent and/or its elongate portion.
5. A dome lid assembly according to one of the preceding claims, characterized in that at least one section (23) and/or at least one section of the edge (23), in particular two sections and/or two sections of the edge, in particular at least one edge section (23) and/or at least one section (23) located towards the bulge and/or towards the opening of the bulge, of the non peripheral setback (7) is swept over by the embracing element (3), in particular its head (20), during the rotation from the first rotational position into the second rotational position of the lid (1) relative to the flange (2),
   wherein said at least one section (23) has in particular a length and/or an arc section length of at least 1 cm, in particular at least 5 cm, and/or at least 10%, in particular at least 25%, of the width and/or an arc section of at least 10°, in particular at least 20°.
6. A dome lid assembly according to any one of the preceding claims, wherein the rotatable mounting, in addition to rotation, also enables movement between first, remote and second, approximate positions and/or the movement between first, remote and second, approximate positions is a movement at least partly along the axis (6) of rotation between first and second rotational positions and/or of the rotatable mounting, in particular a movement along the axis (6) and a movement by tilting of the lid (1) or flange (2) against the axis.
7. A dome lid assembly according to any one of the preceding claims, wherein the distance between first remote and second approximate positions is 700mm to 800mm and/or the rotation between first and second rotational positions is a rotation of 90° to 100° and/or in the first remote position there is a distance between the flange (2) and the lid (1) of 5mm to 15mm and/or in the second approximate position the distance between the flange (2) and the lid (1) is 5mm to 7mm and/or that the setback (7) has a height in the range of 1mm to 3mm and/or
   wherein the embracing element (3) has a corresponding recess and/or projection, in particular in the range of 4mm to 6mm, and/or the recess of the flange (2) and/or lid (1) and/or the embracing element (3) runs parallel to the axis of rotation of the rotatable bearing and/or to the axis of rotation (6) between the first and second rotational position and/or wherein the through opening (24) has a size of DN400 to DN800 and/or a diameter of 380mm to 780mm.
8. A dome lid assembly according to one of the preceding claims, wherein a plurality of auxiliary clips (4, 5) are provided, each of which is connected to the lid (1) or the flange (2), in particular 2 to 5 clips connected to the lid and 2 to 5 clips connected to the flange and/or extending by at least 30% of the outer circumference of the lid or flange, which are arranged, in the first rotary position, to at least partially enclose the respective other element of lid (1) and flange (2), on which the respective auxiliary clip (4, 5) is not arranged, on the side facing away from the element of the lid and the flange on which the respective auxiliary clip (4, 5) is arranged.
9. A dome lid assembly according to one of the preceding claims, wherein flange (2) and/or lid (1) are fixed with a radial play between 0.02 and 0.08 mm, in particular between 0.03 and 0.7mm, and/or with a play in the longitudinal direction of the axle (6) between 0.1 and 0.5 mm, in particular between 0.15 and 0.35 mm, are fixed on the axle (6) and/or the axle (6), flange (2) and/or lid (1) are designed in such a way that they allow a tilting of the flange (2) and/or lid against the axle (6) with a value in the range of 0.5° to 1°.
10. A dome lid assembly according to one of the preceding claims, wherein at least one element of flange (2) and lid (1) has, arranged towards the other element, a hollow seal (12), in particular a circumferential and/or inflatable hollow seal (12), wherein the hollow seal (12) has, in particular, a hollow space for admission of gas and/or fluid and the dome lid assembly has, in particular, means for introducing gas and/or fluid into the hollow space, in particular a passage through the flange and/or lid.
11. A dome lid assembly according to any one of the preceding claims, wherein it is adapted not to extend into a tank or boiler whose dome opening it closes and/or the lid (1) is pressure-tight and/or pressure-resistant so as not to interfere with a discharge of a tank or boiler it closes through another opening by pressurising the tank or boiler.
12. A tank or boiler comprising a dome opening and a dome lid assembly disposed on the dome opening according to any one of the preceding claims, wherein the dome opening and the through opening (24) are at least partially aligned and/or form a common through opening, and
    wherein the dome lid assembly, is set up and arranged to completely close the dome opening in the first rotational position, in particular wherein the dome lid assembly does not extend into the tank or boiler and/or wherein the tank or boiler has means for pressurising the tank or boiler and/or for pressurising and venting the cavity of the hollow seal with gas and/or fluid.
13. A tank or boiler according to claim 12, arranged for unloading by pressurisation of the tank or boiler.
14. A tank or boiler vehicle comprising a tank or boiler according to one of claims 12 or 13, in particular comprising a device for pressurising the tank or boiler and/or a device for pressurising and venting the cavity of the hollow seal with gas and/or fluid.
15. A method of preventing opening of a dome lid of a tank or boiler according to any one of claims 12 or 13,

    wherein by means of at least one embracing element (3), in particular an anchor, in particular a clip, and a setback (7), the embracing element (3) is prevented from opening and/or rotating for opening by engaging behind the setback (7) in a first, remote position of the lid and the tank,

    wherein the recess is at least partially non-edged with respect to the other element and/or the embracing element sweeps over at least a portion of the recess during rotation for opening and/or during opening, wherein before sweeping over there is a greater distance between the side of the other element facing away from the first element and the projection than thereafter, and

    wherein in a second, approximated position of the dome lid (1) and the tank, the embracing element (3) does not engage behind the setback (7) in this approximated position.

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