EP2388519A1 - System for creating a protected working area within a working room separated by a wall - Google Patents

System for creating a protected working area within a working room separated by a wall Download PDF

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Publication number
EP2388519A1
EP2388519A1 EP11163182A EP11163182A EP2388519A1 EP 2388519 A1 EP2388519 A1 EP 2388519A1 EP 11163182 A EP11163182 A EP 11163182A EP 11163182 A EP11163182 A EP 11163182A EP 2388519 A1 EP2388519 A1 EP 2388519A1
Authority
EP
European Patent Office
Prior art keywords
cover
wall
collar
lifting
working space
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.)
Granted
Application number
EP11163182A
Other languages
German (de)
French (fr)
Other versions
EP2388519B1 (en
Inventor
Axel Pauly
Thomas Furth
Marc Blomeier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Power Europe GmbH
Original Assignee
Hitachi Power Europe GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Power Europe GmbH filed Critical Hitachi Power Europe GmbH
Priority to SI201130041T priority Critical patent/SI2388519T1/en
Priority to PL11163182T priority patent/PL2388519T3/en
Priority to MEP-2013-76A priority patent/ME01543B/en
Publication of EP2388519A1 publication Critical patent/EP2388519A1/en
Application granted granted Critical
Publication of EP2388519B1 publication Critical patent/EP2388519B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/24—Supporting, suspending, or setting arrangements, e.g. heat shielding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/40—Arrangements of partition walls in flues of steam boilers, e.g. built-up from baffles

Definitions

  • the invention relates to a system for forming a protected working area within a limited by a wall working space, comprising a folded or rolled into the working space einbringbares, there positionable in a position of use and unfoldable cover and at least one insertable through a through hole in the wall in the working space and fastened to the covering element stop points attachable lifting and / or tensioning cable, wherein in the use position, the cover completely spans the cross-sectional area of the working space and forms a protected working area under itself. Furthermore, the invention relates to a use of such a system.
  • Such a system is for example from the DE 10 2005 053 048 B4 known which can be used within a combustion chamber of a fossil-fired steam generator.
  • Steam generators fueled by fossil fuels typically have a combustor chamber into which the burners open, with the help of which the fossil fuels are burned.
  • combustion chambers have a rectangular or square cross-section.
  • the walls of the combustion chamber are made of membrane wall pipes, through which a heat transfer medium, i. Water or steam or a water / steam mixture is passed, which is then fed, for example, steam turbines.
  • a heat transfer medium i. Water or steam or a water / steam mixture
  • the wall pipes and other heating surfaces in the upper region of the combustion chamber are arranged, which cover the cross-sectional area of the combustion chamber substantially horizontally aligned. These are so-called bundle heating surfaces.
  • an ash discharge funnel with a discharge opening for the ash is arranged below the burner level.
  • the invention is therefore based on the object to provide a system for the formation of a protected work area within a limited by a wall working space, by means of which the safety of the people working underneath can be improved.
  • the inventive system for forming a protected working area within a limited by a wall working space is characterized in that the cover along the edge regions of the base of the cover has a circumferential collar, the collar rests in the use position directly to the wall of the working space.
  • the cover element according to the invention has a flat base, which spans mainly the cross-sectional area of the working space.
  • the collar is circumferentially arranged along the edge regions of the base surface, which in the use position, at least in the prestressed state of the cover element, adjoin the wall of the working chamber, so that preferably the entire base surface is bordered by the collar, so to speak.
  • the collar is preferably dimensioned such that it protrudes beyond the base surface of the cover over and can rest at any time in the use position of the cover on the wall of the working space.
  • the collar is preferably designed such that it can compensate for all movements of the cover in the position of use, without itself getting under tension.
  • the collar in a tensioned state of the cover element, is formed at an angle to the base surface of the cover element, preferably at an angle 0 ° ⁇ ⁇ 90 °, preferably 20 ° ⁇ ⁇ ⁇ 60 °. Due to the angled formation of the collar to the base of the cover, the collar forms the preferably substantially planar base in a tensioned state of the cover, ie when a load acts on the cover, a bevel, whereby a secure contact of the collar on the Wall of the working space even in the case of maximum deflection or load on the cover, for example, when hitting a Abbrandbrockens on the cover can be guaranteed.
  • the angled arrangement of the collar that in the event that For example, a Abbrandbrocken or the like in the region of the collar impinges on the cover, this can roll from the collar in the direction of the center of the cover and thus on the base of the cover, where the burden of Abbrandbrocken or the like can be better compensated and the load
  • the edge regions of the cover can be reduced thereby.
  • the collar is preferably angled at the base of the cover so that depending on the load of the cover the angle between the collar and base can change regardless of the amount of stress on the cover ensure a secure contact of the collar on the wall of the working space to be able to.
  • the transition between the collar and the base is thereby preferably made flexible in a narrow range by the collar is connected, for example via a seam to the base.
  • the collar in the use position by means of a substantially inflexible fastening means on the wall of the working space can be fastened / attached.
  • substantially inflexible means that the fastening means has no or only a slight elasticity.
  • the substantially inflexible fastening means which may be formed, for example, as a rod, profile or rope, is preferably arranged on a free end region of the collar, which is opposite to the end region of the collar, which is attached directly to the base of the cover, on the cover , This makes it possible to ensure that the collar with its free end region, where the essentially inflexible fastening means is provided, rests securely along the wall.
  • a pocket may be formed within which the substantially inflexible fastening means is guided or within which a profile adapted to the peripheral surface of the cover element or of the collar is arranged is at which the substantially inflexible fastener for positioning the collar in the position of use fastened / attached.
  • the provided in the bag profile can then serve in addition to the stabilization of the collar itself.
  • the substantially inflexible fastener formed together with the lifting and / or tensioning cable in one of the Wall of the working space provided guide means are guided.
  • the guide means may be formed in the form of a profile or a tube, in which the substantially inflexible fastening means is preferably guided parallel to the lifting and / or tensioning cable.
  • a further preferred embodiment of the invention provides that the lifting and / or tensioning cable can be fastened to the base surface of the cover, wherein the lifting and / or tensioning cable is designed for dynamic stress.
  • the lifting and / or tensioning cable is thus preferably not attached to the collar of the cover, but on the base of the cover, in particular in the position of use.
  • the base and the collar of the cover can be separately attached to the wall of the working space, so that the cover can be attached to the wall of the working space very safe.
  • the design for dynamic stress means preferably that the lifting and / or tensioning cable for a maximum load, d. H. large impulse forces and a high weight, is designed, but can cushion the impact in a collision of a Abbrandbrocken or the like on the cover.
  • the lifting and / or tensioning cable is preferably at least partially elastic and / or has a tension spring and / or a shock brake on the lifting and / or Tensioning a tension spring and / or an impact brake, so these are preferably directly in the region of a stop point, where the lifting and / or tensioning cable is attached to the cover or the base of the cover provided on the lifting and / or tensioning cable, so they are the link between the Represent stop point and the lifting and / or tensioning cable.
  • a further preferred embodiment of the invention provides a measuring device for determining dynamic and / or static stresses.
  • a measuring device is preferably arranged on one or more lifting and / or tensioning cables, wherein the measuring device preferably directly in the region of a stop point, wherein the lifting and / or tensioning cable is attached to the cover or the base of the cover, on the Lifting and / or tensioning cable is provided.
  • the measuring device can thereby represent the connection between the respective attachment point and the lifting and / or tensioning cable and / or between the lifting and / or tensioning cable and the tension spring and / or the impact brake.
  • the cover is formed of a fabric material.
  • both the base and the collar of a fabric material is formed. Due to the formation of the cover of a fabric material, the cover has a relatively low weight and is thus easily introduced through an opening in the working space.
  • a manhole may be provided, so that the cover with the help of a person in the working space can be introduced and placed there or on appropriate devices can be attached.
  • the Fabric material may be formed, for example, aromatic polyamides (Kevlar ®), polyethylene (Dyneema ®), polyesters, rayon, polypropylene, or wire mesh.
  • the fabric material has a coating.
  • a better strength and increased insensitivity of the fabric material, in particular opposite Abbrandknappen or the like impinging on the cover member can be achieved, which have a very rough and uneven surface and thereby damage uncoated fibers of the fabric material, resulting in an undesirable cracking of the cover can lead.
  • the coating in particular the abrasion resistance of the surface of the fabric material can be improved.
  • the coating is in this case preferably made of a polyurethane and / or a chloroprene rubber (Neoprene ®) is formed.
  • a particularly high abrasion resistance of the fabric material and thus of the cover can be achieved.
  • the coating is applied over the surface of the cover in different thicknesses on the fabric material.
  • the coating may be applied to the collar with a different thickness than on the base surface of the cover.
  • different coating thicknesses can be applied to the fabric material, so that areas which are exposed to particularly high loads, a coating of greater thickness than areas which are exposed to lower loads.
  • the fabric material is formed from a plurality of fabric webs, wherein two adjoining fabric webs are formed at the overlapping edge regions each at least once folded and in the region of overlapping, folded edge areas together sewn.
  • the seam itself is preferably carried out with a 6-hole cross-stitch in order to achieve a particularly stable seam and thus a particularly stable joint of two adjacent fabric webs.
  • a stabilization tape is sewn in in the region of the overlapping edge regions of two fabric webs.
  • the stabilizing band may be formed, for example in the form of a webbing. This makes it possible that four layers of fabric material and a layer of stabilizing tape are sewn together at the overlapping edge regions of two fabric webs. As a result, a seam strength can be achieved, which corresponds to the strength of the fabric material itself.
  • a further advantageous embodiment of the invention provides that the cover in the region of its base has reinforcing elements, wherein a reinforcing element in each case connects a first attachment point with a stop point opposite the first attachment point.
  • a reinforcing element in each case connects a first attachment point with a stop point opposite the first attachment point.
  • the reinforcing elements are provided along the stress lines within the cover, which are preferably formed between two opposing abutment points. This allows the cover by means of the reinforcing elements, which are preferably designed as a reinforcing strip, in particular as a webbing, at the voltage lines between the stop points be strengthened.
  • the forces acting on the cover forces can be passed directly through the reinforcing elements in the stop points, whereby the cover and thus the fabric material of the cover can be relieved.
  • the reinforcing elements are preferably at least partially incorporated into the fabric material of the cover or connected thereto at significant locations.
  • the reinforcing elements are preferably at least partially sewn to the fabric material of the cover and ends in each of the attachment points.
  • the reinforcing elements can also be glued into the fabric material of the cover.
  • the reinforcing elements are preferably provided such that they form a reinforcing mesh on the underside of the cover element pointing in the direction of the protected working area in the use position of the cover element.
  • a reinforcing mesh By forming a reinforcing mesh, the stability of the cover can be further increased, wherein the force acting on the cover energy in an impact, such as a Abbrandbrockens on the cover, can be reduced because the impact no longer needs to be borne by the entire cover, but mainly in a region of the cover element which is formed by cross-over reinforcing elements in the form of a box whose surface is substantially smaller than the total surface of the cover, whereby the vibrations caused by the impact can be significantly reduced in the cover, which in turn reduces the life of the Covering can be significantly increased.
  • the invention furthermore relates to the use of a system designed and developed as described above for forming a protected working area within a working space of a fossil-fired, in particular lignite-fired, or waste-fired steam generator, a waste incineration plant, a top gas power plant, a chimney, a silo and / or a bunker.
  • a fossil-fired in particular lignite-fired, or waste-fired steam generator, a waste incineration plant, a top gas power plant, a chimney, a silo and / or a bunker.
  • Fig. 1 shows a schematic sectional view of a generally designated 10 combustion chamber in the embodiment as a fossil-fueled or garbage-fired steam generator in a partial representation comprising the combustion chamber or combustion chamber 12 without representation of the burner, in this embodiment, the combustion chamber 12 of the steam generator is the working space, within which a system for forming a protected work area is provided.
  • the steam generator 10 is preferably a lignite-fired steam boiler, wherein the term "fossil-fired" or "waste-fired” includes all fossil fuels, ie, for example, hard coal and oil. Also not shown are the on the inside of the combustion chamber walls vertically extending heating pipes or Schurohrspiralen.
  • an ash hopper 14 is formed with a central ash discharge opening 16.
  • the cross-sectional area of the steam generator 10 and the combustion chamber 12 overlapping heating surfaces so-called Bündelterrorism vom 18 are arranged.
  • the free cross-sectional area of the combustion chamber 12 is rectangular, in particular substantially square, where a side length 20 is about 21 m.
  • the combustion chamber 12 is circumferentially enclosed by a wall 22.
  • the combustion chamber 12 at the in Fig. 1 shown embodiment with openings 26a, 26b in the wall 22, through which the interior of the combustion chamber 12 is accessible from the outside.
  • Both an opening 26a and an opening 26b are shown, it being sufficient if only one of the two openings 26a or 26b is present.
  • a folded or collapsed or rolled-up cover 24 whose state is schematically represented by the shape of an ellipse in the Fig. 1 is indicated, inserted from the outside into the interior of the combustion chamber 12 and the interior of the ash hopper 14.
  • the folded or rolled-up covering element 24 it is also possible for the folded or rolled-up covering element 24 to be introduced into the combustion chamber 12 via an opening, not shown here, in the afterburning grid of the steam generator 10.
  • lifting and / or tensioning cables 30a, 30b are attached to the cover.
  • the lifting and / or tensioning cables 30a, 30b have previously been introduced from the outside into the interior of the combustion chamber 12 through passage openings 32 formed in the upper part of the combustion chamber 12 in the region of the bundle heating surface 18 in the wall 7 of the combustion chamber 12. These lifting and / or tensioning cables are fastened to the cover element 24.
  • the cover 24 is, after it has been fully inserted into the combustion chamber 12, unfolded, rolled or unfolded and with the help of the lifting and / or tensioning cables 30a, 30b, which are secured to the cover 24 in the use position 34 of the unfolded cover 24 brought. This is done by pulling on the lifting and / or tensioning cables in the direction of the arrows 36 from the outside.
  • the use position 34 is located at the level of the through-openings 32. At this height, the cover element 24 completely spans the cross-sectional area of the combustion chamber 12, so that below the cover element 24 in its use position 34 a protected area is created Working area forms in which no falling from the bundle heating surfaces 18 erosion, slag or ashes are falling into / can. Such erosion, ash or slag drifts are collected by the cover element 24 and remain on its upper side pointing in the direction of the bundle heating surface 18.
  • Fig. 2 shows a partial section of a cover according to the invention 24 in its use position 34.
  • the cover 24 has a flat in the use position shown 34 base 38 and a collar 40, wherein the collar 40 along the edge regions of the base 38 is formed circumferentially and in the position of use 34 is applied directly to the wall 22 of the working space or the combustion chamber 12 shown here.
  • the collar 40 is shown in the use position 34 of the cover 24 shown here in a tensioned state, in which the collar 40 is formed at an angle to the base 38 of the cover 24.
  • the collar 40 by means of a substantially inflexible fastening means 42, in this case a rope attached to the wall 22.
  • the fastening means 42 is fastened to a profile 48 arranged in a pocket 46 formed on an end region 44 of the collar 40, the pocket 46 and the profile 48 preferably being formed over the entire length of the collar 40 at the end region 44.
  • the cover 24 is secured in the use position 34 via the lifting and or tensioning cables 30a, 30b on the wall 22 of the combustion chamber 12, which are arranged on the base 38 of the cover 24.
  • the lifting and / or tensioning cables 30a, 34b are at least partially elastic.
  • the lifting and / or tensioning cables 30a, 30b are guided together with the fastening means 42 in each case in a guide means 50 provided on the wall 22.
  • the cover member 24 is formed of a fabric material provided with a coating.
  • the cover member 24 is formed of a plurality of fabric webs 52a, 52b, which extend substantially parallel to each other. Two adjoining fabric webs 52a, 52b are there, as in FIG Fig. 3 can be seen, at the overlapping edge regions 54a, 54b each formed once turned over and sewn together in the region of overlapping, folded edge portions 54a, 54b.
  • a stabilizing element 56 in the form of a webbing is sewn in.
  • the cover 24, as in Fig. 4 is shown, in the region of its base 38 reinforcing elements 58, wherein in each case a reinforcing element 58 connects a first stop point 60a, to which a lifting and / or tensioning cable 30a, 30b can be fastened, with a stop point 60b opposite the first stop point 60a.
  • the reinforcing elements 58 are provided in cross-over the entire surface of the base 38 of the cover 24, so that they form a kind of reinforcing mesh on the underside of the cover 24 in the use position 34 of the cover 24 in the direction of the protected working area.
  • the reinforcing elements 58 are in the form of reinforcing bands, in particular in the form of straps, which are at least partially incorporated in the fabric material of the cover 24, in particular sewn.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Woven Fabrics (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Movable Scaffolding (AREA)
  • Emergency Lowering Means (AREA)
  • Tents Or Canopies (AREA)
  • Solid-Fuel Combustion (AREA)

Abstract

The system has a cover element (24) moved to a workspace (12). Lifting- and/or tensioning ropes (30a, 30b) are insertable through a passage (32) in a wall (22) of the workspace, and are attachable at stop points (60a, 60b) that are provided at the cover element. The cover element completely overstretches cross-sectional area of the workspace in a usage position (34) of the cover element to form a protected working area. The cover element comprises a circumferential collar along an edge region of a base surface of the cover element, and directly lies at the wall in the usage position.

Description

Die Erfindung betrifft ein System zur Ausbildung eines geschützten Arbeitsbereiches innerhalb eines durch eine Wandung begrenzten Arbeitsraumes, umfassend ein zusammengefaltet oder aufgerollt in den Arbeitsraum einbringbares, dort in eine Gebrauchsposition positionierbares und auffaltbares Abdeckelement und mindestens ein durch eine Durchgangsöffnung in der Wandung in den Arbeitsraum einführbares und an an dem Abdeckelement vorgesehenen Anschlagspunkten befestigbares Hebe- und/oder Spannseil, wobei in der Gebrauchsposition das Abdeckelement die Querschnittsfläche des Arbeitsraumes vollständig überspannt und unter sich einen geschützten Arbeitsbereich ausbildet. Ferner betrifft die Erfindung eine Verwendung eines derartigen Systems.The invention relates to a system for forming a protected working area within a limited by a wall working space, comprising a folded or rolled into the working space einbringbares, there positionable in a position of use and unfoldable cover and at least one insertable through a through hole in the wall in the working space and fastened to the covering element stop points attachable lifting and / or tensioning cable, wherein in the use position, the cover completely spans the cross-sectional area of the working space and forms a protected working area under itself. Furthermore, the invention relates to a use of such a system.

Ein derartiges System ist beispielsweise aus der DE 10 2005 053 048 B4 bekannt, welches innerhalb einer Brennkammer eines fossilbefeuerten Dampferzeugers einsetzbar ist.Such a system is for example from the DE 10 2005 053 048 B4 known which can be used within a combustion chamber of a fossil-fired steam generator.

Mit fossilen Brennstoffen befeuerte Dampferzeuger weisen üblicherweise eine Brennerkammer auf, in die die Brenner einmünden, mit deren Hilfe die fossilen Brennstoffe verbrannt werden. Üblicherweise weisen solche Brennkammern einen rechteckigen oder quadratischen Querschnitt auf. Die Wände der Brennkammer sind aus Membranwandrohren, durch die ein Wärmeträgermedium, d.h. Wasser oder Dampf oder ein Wasser/DampfGemisch geführt wird, das dann beispielsweise Dampfturbinen zugeleitet wird. Neben den üblicherweise vertikal längs der Brennkammerwand geführten Rohrleitungen sind auch weitere Heizflächen im oberen Bereich der Brennkammer angeordnet, die im wesentlichen horizontal ausgerichtet die Querschnittsfläche der Brennkammer überdecken. Dies sind sogenannte Bündelheizflächen. Unterhalb der Brennerebene ist insbesondere bei kohlebefeuerten Dampferzeugern ein Ascheaustragstrichter mit einer Austragsöffnung für die Asche angeordnet.Steam generators fueled by fossil fuels typically have a combustor chamber into which the burners open, with the help of which the fossil fuels are burned. Usually, such combustion chambers have a rectangular or square cross-section. The walls of the combustion chamber are made of membrane wall pipes, through which a heat transfer medium, i. Water or steam or a water / steam mixture is passed, which is then fed, for example, steam turbines. In addition to the usually vertically guided along the combustion chamber wall pipes and other heating surfaces in the upper region of the combustion chamber are arranged, which cover the cross-sectional area of the combustion chamber substantially horizontally aligned. These are so-called bundle heating surfaces. Below the burner level, in particular in coal-fired steam generators, an ash discharge funnel with a discharge opening for the ash is arranged.

Beim Betrieb derartiger Dampferzeuger entstehen an den Bündelrohren oder Dampferzeugerwänden Ablagerungen, die sich durch dort niederschlagende Schlacke- und Aschebestandteile bilden. Diese Ablagerungen wachsen im Laufe der Zeit an und bilden einen Belag, der die einzelnen Rohre an der Innenwandung des Dampferzeugers ummantelt. Hierdurch wird der Wärmedurchgang zwischen Kesselraum und Rohrinnerem negativ beeinträchtigt, so dass der Kesselwirkungsgrad deutlich abnimmt.During operation of such steam generators, deposits form on the bundle tubes or steam generator walls, which form as a result of slag and ash components precipitating there. These deposits grow over time and form one Covering, which sheathes the individual pipes on the inner wall of the steam generator. As a result, the heat transfer between the boiler room and the inside of the pipe is adversely affected, so that the boiler efficiency decreases significantly.

Daher müssen derartige Dampferzeuger in regelmäßigen Abständen gereinigt und hinsichtlich des Verschleißes überprüft und gegebenenfalls instand gesetzt werden. Hierzu ist es erforderlich, dass der Dampferzeuger vor derartigen Revisionsarbeiten still gesetzt wird. In die Brennkammer werden dann Arbeitsbühnen eingezogen, so dass der Brennkammerinnenraum auf diesen Bühnen begehbar wird und Revisionsarbeiten an den Heizrohren, Heizflächen oder auch den Brennkammerwänden durchgeführt werden können. Beispielsweise ist aus der DE-AS-1 167 476 ein Verfahren bekannt, bei welchem seitlich von außen durch die Brennkammeraußenwände hindurch Konsolrohre in die Brennkammer eingeschoben und befestigt werden. Auf diese Konsolrohre werden dann Gerüstbretter aufgelegt und damit eine begehbare Arbeitsbühne geschaffen.Therefore, such steam generators must be cleaned at regular intervals and checked for wear and possibly repaired. For this it is necessary that the steam generator is set still before such revision work. Working platforms are then drawn into the combustion chamber, so that the combustion chamber interior is accessible on these stages and inspection work can be carried out on the heating pipes, heating surfaces or the combustion chamber walls. For example, is from the DE-AS-1 167 476 a method is known in which laterally inserted from outside through the combustion chamber outer walls through console tubes in the combustion chamber and fixed. On this console pipes then scaffolding boards are placed and thus created a walk-in platform.

Bei den durchzuführenden Reinigungs-, Wartungs- oder Installationsarbeiten besteht die Gefahr, dass auf die auf der Arbeitsbühne arbeitenden Personen Schlacke- oder Asche- bzw. Abbrandbrocken herunterfallen, die sich an über der Arbeitsbühne befindlichen Heizflächen oder Heizrohren gebildet haben. Auch besteht die Gefahr, dass derartige Brocken, die durchaus ein Gewicht von 10 bis 30 kg oder mehr aufweisen können, in den Bereich unterhalb der Arbeitsbühne fallen. Der Arbeitsraum ist somit nicht sicher. Aus sicherheitstechnischen Gründen arbeiten diese begehbaren Arbeitsbühnen von oben nach unten in der Brennkammer, damit zunächst alle Abbrandbrocken etc., die herabfallen könnten, von oben nach unten entfernt werden können, so dass dann in dem jeweils an dem gereinigten Bereich anschließenden Bereich ungefährdet gearbeitet werden kann. Es ist bei der Beachtung dieser Arbeitsweise dann aber nicht möglich, dass unterhalb der Arbeitsbühne ebenfalls Personen arbeiten oder dass der untere Bereich von Personen betreten wird, ohne dass vorher im darüberliegenden Bereich der Brennkammer lose Brocken oder Anhaftungen beseitigt worden sind. Soll gleichzeitig im unteren und oberen Bereich bzw. nur im unteren Bereich, beispielsweise im Rostbereich einer Brennkammer gearbeitet werden, führt dies zu unverhältnismäßig langen unerwünschten Stillstandzeiten.In the cleaning, maintenance or installation work to be carried out, there is a risk that fall on the person working on the platform slag or ash or Abbrandbrocken that have formed on located above the platform heating surfaces or heating pipes. There is also the risk that such chunks, which may well have a weight of 10 to 30 kg or more, fall into the area below the working platform. The workspace is therefore not safe. For safety reasons, these walk-in work platforms work from top to bottom in the combustion chamber, so that first all Abbrandbrocken etc., which could fall down can be removed from top to bottom, so that then can work safely in the adjoining each of the cleaned area area , It is in observance of this procedure but then not possible that work below the platform also persons or that the lower part of people is entered, without previously in the overlying area of the combustion chamber loose chunks or adhesions have been eliminated. If work is to be carried out simultaneously in the lower and upper regions or only in the lower region, for example in the grate region of a combustion chamber, this leads to disproportionately long undesirable downtimes.

Es ist daher aus der DE 10 2005 053 048 B4 bekannt, ein auffaltbares oder aufspannbares Abdeckelement in einer gewünschten Höhe in einer Gebrauchsposition zu positionieren, welches in der Gebrauchsposition die Querschnittsfläche der Brennkammer überspannt und unter sich einen gegen das Herabfallen von Schlacke- oder Aschebrocken geschützten Arbeitsraum ausbildet. Das Abdeckelement ist dabei aus einem engmaschigen Netz, einem Gewebe oder einer Folie ausgebildet, wobei das Abdeckelement an den Anschlagspunkten entlang der Randbereiche des Abdeckelements in der Gebrauchsposition mittels Hebeund/oder Spannseilen an der Brennkammerwand befestigt wird. Jedoch tritt hierbei das Problem auf, dass schon ein unbelastet gespanntes Abdeckelement zur Brennkammerwand hin den Arbeitsbereich nicht vollständig abdichtet, da sich zwischen den einzelnen Abspannpunkten aufgrund der Spannungen in dem Material des Abdeckelements Bögen bzw. Freiräume bilden. Wird das Abdeckelement zusätzlich durch herunterfallende Abbrandbrocken belastet, vergrößern sich die Freiräume, wodurch das Risiko, dass die Abbrandbrocken durch diese Freiräume hindurch fallen können und die darunter arbeitenden Personen verletzten können, weiter vergrößert wird.It is therefore out of the DE 10 2005 053 048 B4 known to position a foldable or aufspannbares cover at a desired height in a use position, which spans in the use position, the cross-sectional area of the combustion chamber and forms a protected against the falling of slag or ash sludge working space. The cover is formed from a close mesh, a fabric or a film, wherein the cover is attached to the stop points along the edge regions of the cover in the use position by means of lifting and / or tension cables on the combustion chamber wall. However, the problem arises here that even an unloaded cocked cover to the combustion chamber wall towards the work area does not completely seals, as form between the individual guying points due to the stresses in the material of the cover arcs or free spaces. If the cover is additionally burdened by falling Abbrandbrocken, increase the free space, which increases the risk that the Abbrandbrocken can fall through these spaces through and injure the people working below, further increased.

Der Erfindung liegt daher die Aufgabe zugrunde, ein System zur Ausbildung eines geschützten Arbeitsbereiches innerhalb eines durch eine Wandung begrenzten Arbeitsraumes zur Verfügung zu stellen, mittels welchem die Sicherheit der darunter arbeitenden Personen verbessert werden kann.The invention is therefore based on the object to provide a system for the formation of a protected work area within a limited by a wall working space, by means of which the safety of the people working underneath can be improved.

Die Lösung der Aufgabe erfolgt erfindungsgemäß durch die Merkmale des Anspruchs 1. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.The object is achieved by the features of claim 1. Advantageous embodiments of the invention are specified in the dependent claims.

Das erfindungsgemäße System zur Ausbildung eines geschützten Arbeitsbereiches innerhalb eines durch eine Wandung begrenzten Arbeitsraumes zeichnet sich dadurch aus, dass das Abdeckelement entlang der Randbereiche der Grundfläche des Abdeckelements einen umlaufenden Kragen aufweist, wobei der Kragen in der Gebrauchsposition unmittelbar an der Wandung des Arbeitsraumes anliegt.The inventive system for forming a protected working area within a limited by a wall working space is characterized in that the cover along the edge regions of the base of the cover has a circumferential collar, the collar rests in the use position directly to the wall of the working space.

Durch die Ausbildung eines Kragens an dem Abdeckelement, welcher in der Gebrauchsposition unmittelbar an der Wandung des Arbeitsraumes anliegt, können die Freiräume, die sich zwischen der Wandung und dem Abdeckelement durch die Befestigung des Abdeckelements in der Gebrauchsposition mittels der Hebe- und/oder Spannseile ergeben, vollständig abgedeckt werden, so dass die Sicherheit für die unterhalb des Abdeckelements arbeitenden Personen erheblich verbessert werden kann, da nunmehr auch an den Randbereichen zwischen dem Abdeckelement und der Wandung auch kleinste Abbrandbrocken oder ähnliches von dem Abdeckelement aufgefangen werden können. Das erfindungsgemäße Abdeckelement weist eine flächig ausgebildete Grundfläche auf, welche hauptsächlich die Querschnittsfläche des Arbeitsraumes überspannt. Der Kragen ist entlang der Randbereiche der Grundfläche, welche in der Gebrauchsposition, zumindest im vorgespannten Zustand des Abdeckelements, an der Wandung des Arbeitsraumes angrenzen, umlaufend angeordnet, so dass vorzugsweise die gesamte Grundfläche von dem Kragen sozusagen umrandet ist. Der Kragen ist dabei vorzugsweise derart dimensioniert, dass er über die Grundfläche des Abdeckelements hinüber ragt und zu jedem Zeitpunkt in der Gebrauchsposition des Abdeckelements an der Wandung des Arbeitsraumes anliegen kann. Der Kragen ist dabei vorzugsweise derart ausgestaltet, dass er in der Gebrauchsposition alle Bewegungen des Abdeckelements kompensieren kann, ohne dabei selber unter Spannung zu geraten. Dadurch wird erreicht, dass auch bei hohen Belastungen, beispielsweise beim Auftreffen eines Abbrandbrocken oder ähnlichem mit einem hohen Gewicht auf das Abdeckelement, der Kragen an der Wandung des Arbeitsraumes anliegen bleibt, so dass sich zu keiner Zeit ein Spalt oder Freiräume zwischen dem Abdeckelement bzw. dem Kragen des Abdeckelements und der Wandung des Arbeitsraumes ausbilden können.Due to the formation of a collar on the cover, which rests in the use position directly on the wall of the working space, the Free spaces that arise between the wall and the cover by the attachment of the cover in the position of use by means of lifting and / or tensioning cables are completely covered, so that the safety of the working below the cover element people can be significantly improved because now Also at the edge regions between the cover and the wall even the smallest Abbrandbrocken or the like can be collected by the cover. The cover element according to the invention has a flat base, which spans mainly the cross-sectional area of the working space. The collar is circumferentially arranged along the edge regions of the base surface, which in the use position, at least in the prestressed state of the cover element, adjoin the wall of the working chamber, so that preferably the entire base surface is bordered by the collar, so to speak. The collar is preferably dimensioned such that it protrudes beyond the base surface of the cover over and can rest at any time in the use position of the cover on the wall of the working space. The collar is preferably designed such that it can compensate for all movements of the cover in the position of use, without itself getting under tension. This ensures that even at high loads, for example, when hitting a Abbrandbrocken or the like with a high weight on the cover, the collar remains on the wall of the working space, so that at no time a gap or space between the cover or can form the collar of the cover and the wall of the working space.

Bevorzugt ist es erfindungsgemäß vorgesehen, dass in einem gespannten Zustand des Abdeckelements der Kragen winklig, vorzugsweise mit einem Winkel 0° < α ≤ 90°, bevorzugt 20° ≤ α ≤ 60°, zu der Grundfläche des Abdeckelements ausgebildet ist. Durch die winklige Ausbildung des Kragens zu der Grundfläche des Abdeckelements bildet der Kragen zu der vorzugsweise im Wesentlichen eben ausgebildeten Grundfläche in einem gespannten Zustand des Abdeckelements, d. h. wenn eine Last auf das Abdeckelement wirkt, eine Schräge aus, wodurch ein sicheres Anliegen des Kragens an der Wandung des Arbeitsraumes auch im Falle einer maximalen Auslenkung bzw. Belastung auf dem Abdeckelement, beispielsweise beim Auftreffen eines Abbrandbrockens auf das Abdeckelement, gewährleistet werden kann. Zudem wird durch die winklige Anordnung des Kragen erreicht, dass in dem Falle, dass beispielsweise ein Abbrandbrocken oder ähnliches im Bereich des Kragens auf das Abdeckelement auftrifft, dieses von dem Kragen in Richtung der Mitte des Abdeckelements und damit auf die Grundfläche des Abdeckelements abrollen kann, wo die Belastung durch den Abbrandbrocken oder dergleichen besser kompensiert werden kann und die Belastung an den Randbereichen des Abdeckelements dadurch reduziert werden können. Der Kragen ist dabei vorzugsweise derart winklig an der Grundfläche des Abdeckelements anordbar, dass sich je nach Belastung des Abdeckelements der Winkel zwischen Kragen und Grundfläche verändern kann, um unabhängig von der Höhe der Belastung des Abdeckelements ein sicheres Anliegen des Kragen an der Wandung des Arbeitsraumes gewährleisten zu können. Der Übergang zwischen dem Kragen und der Grundfläche ist dadurch vorzugsweise in einem engen Bereich flexibel ausgebildet, indem der Kragen beispielsweise über eine Naht mit der Grundfläche verbunden ist.It is preferably provided according to the invention that, in a tensioned state of the cover element, the collar is formed at an angle to the base surface of the cover element, preferably at an angle 0 ° <α ≦ 90 °, preferably 20 ° ≦ α ≦ 60 °. Due to the angled formation of the collar to the base of the cover, the collar forms the preferably substantially planar base in a tensioned state of the cover, ie when a load acts on the cover, a bevel, whereby a secure contact of the collar on the Wall of the working space even in the case of maximum deflection or load on the cover, for example, when hitting a Abbrandbrockens on the cover can be guaranteed. In addition, it is achieved by the angled arrangement of the collar, that in the event that For example, a Abbrandbrocken or the like in the region of the collar impinges on the cover, this can roll from the collar in the direction of the center of the cover and thus on the base of the cover, where the burden of Abbrandbrocken or the like can be better compensated and the load The edge regions of the cover can be reduced thereby. The collar is preferably angled at the base of the cover so that depending on the load of the cover the angle between the collar and base can change regardless of the amount of stress on the cover ensure a secure contact of the collar on the wall of the working space to be able to. The transition between the collar and the base is thereby preferably made flexible in a narrow range by the collar is connected, for example via a seam to the base.

Weiter ist es vorteilhafterweise vorgesehen, dass der Kragen in der Gebrauchsposition mittels eines im Wesentlichen unflexibel ausgebildeten Befestigungsmittels an der Wandung des Arbeitsraumes befestigbar/befestigt ist. Im Wesentlichen unflexibel bedeutet hierbei, dass das Befestigungsmittel keine oder nur eine geringe Elastizität aufweist. Durch die Befestigung des Kragens mittels eines im Wesentlichen unflexibel ausgebildeten Befestigungsmittels kann ein Anliegen des Kragens an der Wandung des Arbeitsraumes zu jeder Zeit besonders sicher gewährleistet werden. Das im Wesentlichen unflexibel ausgebildete Befestigungsmittel, welches beispielsweise als Stange, Profil oder Seil ausgebildet sein kann, ist vorzugsweise an einem freien Endbereich des Kragens, welcher dem Endbereich des Kragens, welcher unmittelbar an der Grundfläche des Abdeckelements befestigt ist, gegenüberliegt, an dem Abdeckelement angeordnet. Hierdurch kann sichergestellt werden, dass der Kragen mit seinem freien Endbereich, wo das im Wesentlichen unflexibel ausgebildete Befestigungsmittel vorgesehen ist, entlang der Wandung sicher anliegt. An dem freien Endbereich des Kragens, wo das im Wesentlichen unflexibel ausgebildete Befestigungsmittel vorgesehen ist, kann beispielsweise eine Tasche ausgebildet sein, innerhalb welcher das im Wesentlichen unflexibel ausgebildete Befestigungsmittel geführt ist oder innerhalb welcher ein an die Umfangsfläche des Abdeckelements bzw. des Kragens angepasstes Profil angeordnet ist, an welchem das im Wesentlichen unflexibel ausgebildete Befestigungsmittel zur Positionierung des Kragens in der Gebrauchsposition befestigbar/befestigt ist. Das in der Tasche vorgesehene Profil kann dann zusätzlich zur Stabilisierung des Kragens selber dienen.Further, it is advantageously provided that the collar in the use position by means of a substantially inflexible fastening means on the wall of the working space can be fastened / attached. Substantially inflexible here means that the fastening means has no or only a slight elasticity. By attaching the collar by means of a substantially inflexible fastening means a concern of the collar on the wall of the working space can be ensured at any time particularly secure. The substantially inflexible fastening means, which may be formed, for example, as a rod, profile or rope, is preferably arranged on a free end region of the collar, which is opposite to the end region of the collar, which is attached directly to the base of the cover, on the cover , This makes it possible to ensure that the collar with its free end region, where the essentially inflexible fastening means is provided, rests securely along the wall. At the free end region of the collar, where the essentially inflexible fastening means is provided, for example, a pocket may be formed within which the substantially inflexible fastening means is guided or within which a profile adapted to the peripheral surface of the cover element or of the collar is arranged is at which the substantially inflexible fastener for positioning the collar in the position of use fastened / attached. The provided in the bag profile can then serve in addition to the stabilization of the collar itself.

Zur Reduzierung des benötigten Platzbedarfes und um einen möglichst einfachen Aufbau und eine einfache Handhabung des Systems erreichen zu können, ist es weiter bevorzugt vorgesehen, dass in der Gebrauchsposition das im Wesentlichen unflexibel ausgebildete Befestigungsmittel zusammen mit dem Hebe- und/oder Spannseil in einem an der Wandung des Arbeitsraumes vorgesehenen Führungsmittel geführt sind. Das Führungsmittel kann dabei in Form eines Profils oder eines Rohres ausgebildet sein, in welchem das im Wesentlichen unflexibel ausgebildete Befestigungsmittel vorzugsweise parallel zu dem Hebe- und/oder Spannseil geführt ist.To reduce the space required and to achieve the simplest possible structure and ease of use of the system, it is further preferred that in the use position, the substantially inflexible fastener formed together with the lifting and / or tensioning cable in one of the Wall of the working space provided guide means are guided. The guide means may be formed in the form of a profile or a tube, in which the substantially inflexible fastening means is preferably guided parallel to the lifting and / or tensioning cable.

Eine weiter bevorzugte Ausgestaltung der Erfindung sieht vor, dass das Hebe- und/oder Spannseil an der Grundfläche des Abdeckelements befestigbar ist, wobei das Hebe- und/oder Spannseil auf dynamische Beanspruchung ausgelegt ist. Das Hebe- und/oder Spannseil wird damit vorzugsweise nicht an dem Kragen des Abdeckelements, sondern an der Grundfläche des Abdeckelements, insbesondere in der Gebrauchsposition, befestigt. Dadurch können die Grundfläche und der Kragen des Abdeckelements getrennt voneinander an der Wandung des Arbeitsraumes befestigt werden, so dass das Abdeckelement besonders sicher an der Wandung des Arbeitsraumes befestigt werden kann. Die Auslegung auf dynamische Beanspruchung bedeutet dabei bevorzugt, dass das Hebe- und/oder Spannseil für eine maximale Belastung, d. h. große Impulskräfte und ein hohes Gewicht, ausgelegt ist, jedoch bei einem Aufprall eines Abbrandbrocken oder dergleichen auf dem Abdeckelement den Aufprall abfedern kann.A further preferred embodiment of the invention provides that the lifting and / or tensioning cable can be fastened to the base surface of the cover, wherein the lifting and / or tensioning cable is designed for dynamic stress. The lifting and / or tensioning cable is thus preferably not attached to the collar of the cover, but on the base of the cover, in particular in the position of use. As a result, the base and the collar of the cover can be separately attached to the wall of the working space, so that the cover can be attached to the wall of the working space very safe. The design for dynamic stress means preferably that the lifting and / or tensioning cable for a maximum load, d. H. large impulse forces and a high weight, is designed, but can cushion the impact in a collision of a Abbrandbrocken or the like on the cover.

Um eine Auslegung des Hebe- und/oder Spannseiles auf eine dynamische Beanspruchung realisieren zu können, ist das Hebe- und/oder Spannseil vorzugsweise zumindest teilweise elastisch ausgebildet und/oder weist eine Zugfeder und/oder eine Stoßbremse auf Weist das Hebe- und/oder Spannseil eine Zugfeder und/oder eine Stoßbremse auf, so sind diese vorzugsweise unmittelbar im Bereich eines Anschlagspunktes, wo das Hebe- und/oder Spannseil an dem Abdeckelement bzw. der Grundfläche des Abdeckelements befestigt wird, an dem Hebe- und/oder Spannseil vorgesehen, so dass sie die Verbindung zwischen dem Anschlagpunkt und dem Hebe- und/oder Spannseil darstellen. Dadurch können die dynamischen Beanspruchungen, beispielsweise bei Aufprall eines Abbrandbrockens auf das Abdeckelement, unmittelbar von der Zugefeder und/oder der Stoßbremse aufgefangen werden, so dass diese nur noch zu einem geringen Anteil an das Hebe- und/oder Spannseil übertragen wird, wodurch die Lebensdauer des gesamten Systems erhöht werden kann.In order to realize an interpretation of the lifting and / or tensioning cable to a dynamic stress, the lifting and / or tensioning cable is preferably at least partially elastic and / or has a tension spring and / or a shock brake on the lifting and / or Tensioning a tension spring and / or an impact brake, so these are preferably directly in the region of a stop point, where the lifting and / or tensioning cable is attached to the cover or the base of the cover provided on the lifting and / or tensioning cable, so they are the link between the Represent stop point and the lifting and / or tensioning cable. As a result, the dynamic stresses, for example, upon impact of a Abbrandbrockens on the cover, be absorbed directly by the Zugefeder and / or the impact brake so that it is transmitted only to a small extent to the lifting and / or tensioning cable, whereby the life of the entire system can be increased.

Eine weiter bevorzugte Ausgestaltung der Erfindung sieht eine Messeinrichtung zur Bestimmung dynamischer und/oder statischer Beanspruchungen vor. Eine derartige Messeinrichtung ist bevorzugt an einem oder mehreren Hebe- und/oder Spannseilen angeordnet, wobei die Messeinrichtung vorzugsweise unmittelbar im Bereich eines Anschlagspunktes, bei welchem das Hebe- und/oder Spannseil an dem Abdeckelement bzw. der Grundfläche des Abdeckelements befestigt ist, an dem Hebe- und/oder Spannseil vorgesehen ist. Die Messeinrichtung kann dadurch die Verbindung zwischen dem jeweiligen Anschlagspunkt und dem Hebe- und/oder Spannseil und/oder zwischen Hebe- und/oder Spannseil und der Zugfeder und/oder der Stoßbremse darstellen. Dadurch können die dynamischen Beanspruchungen, beispielsweise bei Aufprall eines Abbrandbrockens auf das Abdeckelement, im Bereich des Anschlagspunktes der Hebe- und/oder Spannseile gemessen und ausgewertet werden. Hierdurch ist es möglich, dynamische sowie statische Belastungen, die auf das Abdeckelement einwirken, zu messen, zu analysieren und zu bewerten, um gegebenenfalls rechtzeitig Maßnahmen, wie eine Entleerung und/oder Kontrolle des Abdeckelementes, einzuleiten.A further preferred embodiment of the invention provides a measuring device for determining dynamic and / or static stresses. Such a measuring device is preferably arranged on one or more lifting and / or tensioning cables, wherein the measuring device preferably directly in the region of a stop point, wherein the lifting and / or tensioning cable is attached to the cover or the base of the cover, on the Lifting and / or tensioning cable is provided. The measuring device can thereby represent the connection between the respective attachment point and the lifting and / or tensioning cable and / or between the lifting and / or tensioning cable and the tension spring and / or the impact brake. As a result, the dynamic stresses, for example, upon impact of a Abbrandbrockens on the cover, in the region of the attachment point of the lifting and / or tensioning cables can be measured and evaluated. This makes it possible to measure, analyze and evaluate dynamic and static loads acting on the cover, in order to initiate timely measures, such as emptying and / or control of the cover.

Nach einer weiter vorteilhaften Ausgestaltung der Erfindung ist es vorgesehen, dass das Abdeckelement aus einem Gewebematerial ausgebildet ist. Vorzugsweise ist dabei sowohl die Grundfläche als auch der Kragen aus einem Gewebematerial ausgebildet. Durch die Ausbildung des Abdeckelements aus einem Gewebematerial weist das Abdeckelement ein relativ geringes Gewicht auf und ist somit ohne Probleme durch eine Öffnung in den Arbeitsraum einführbar. Beispielsweise kann im Falle der Ausbildung des Arbeitsraumes als eine Brennkammer in einer Trichterseitenwand oberhalb eines begehbaren Rostes, das oberhalb einer Ascheaustrittsöffnung angeordnet ist, ein Mannloch vorgesehen sein, so dass das Abdeckelement mit Hilfe einer Person in den Arbeitsraum einbringbar ist und dort aufgestellt bzw. an entsprechenden Vorrichtungen angebracht werden kann. Das Gewebematerial kann beispielsweise aus aromatischen Polyamiden (Kevlar®), Polyethylen (Dyneema®), Polyestern, Viskosefasern, Polypropylen oder Drahtgewebe ausgebildet sein.According to a further advantageous embodiment of the invention, it is provided that the cover is formed of a fabric material. Preferably, both the base and the collar of a fabric material is formed. Due to the formation of the cover of a fabric material, the cover has a relatively low weight and is thus easily introduced through an opening in the working space. For example, in the case of the formation of the working space as a combustion chamber in a funnel side wall above a walk-off grate, which is arranged above an ash outlet opening, a manhole may be provided, so that the cover with the help of a person in the working space can be introduced and placed there or on appropriate devices can be attached. The Fabric material may be formed, for example, aromatic polyamides (Kevlar ®), polyethylene (Dyneema ®), polyesters, rayon, polypropylene, or wire mesh.

Bevorzugt ist es hierbei vorgesehen, dass das Gewebematerial eine Beschichtung aufweist. Durch die Beschichtung kann eine bessere Festigkeit und eine erhöhte Unempfindlichkeit des Gewebematerials, insbesondere gegenüber auf das Abdeckelement auftreffende Abbrandbrocken oder ähnlichem erreicht werden, welche eine sehr raue und unebene Oberfläche aufweisen und dadurch unbeschichtete Fasern des Gewebematerials beschädigen könnten, was zu einem unerwünschten Reißen des Abdeckelements führen kann. Mittels der Beschichtung kann insbesondere die Abriebfestigkeit der Oberfläche des Gewebematerials verbessert werden.It is preferably provided here that the fabric material has a coating. By the coating, a better strength and increased insensitivity of the fabric material, in particular opposite Abbrandknappen or the like impinging on the cover member can be achieved, which have a very rough and uneven surface and thereby damage uncoated fibers of the fabric material, resulting in an undesirable cracking of the cover can lead. By means of the coating, in particular the abrasion resistance of the surface of the fabric material can be improved.

Die Beschichtung ist hierbei vorzugsweise aus einem Polyurethan und/oder einem Chloropren-Kautschuk (Neopren®) ausgebildet. Mittels einer derartigen Beschichtung kann eine besonders hohe Abriebfestigkeit des Gewebematerials und damit des Abdeckelements erreicht werden.The coating is in this case preferably made of a polyurethane and / or a chloroprene rubber (Neoprene ®) is formed. By means of such a coating, a particularly high abrasion resistance of the fabric material and thus of the cover can be achieved.

Weiter ist es bevorzugt vorgesehen, dass die Beschichtung über die Fläche des Abdeckelements in unterschiedlichen Dicken auf das Gewebematerial aufgebracht ist. Beispielsweise kann die Beschichtung mit einer anderen Dicke auf den Kragen als auf der Grundfläche des Abdeckelements aufgebracht sein. Auch im Bereich der Grundfläche selber können unterschiedliche Beschichtungsdicken auf das Gewebematerial aufgebracht sein, so dass Bereiche, welche besonders hohen Belastungen ausgesetzt sind, eine Beschichtung größerer Dicke aufweisen als Bereiche, welche geringeren Belastungen ausgesetzt sind. Durch die Aufbringung der Beschichtung in unterschiedlichen Stärken kann die Beschichtung und damit das Gewebematerial bzw. das Abdeckelement an unterschiedlichste Anforderungen individuell angepasst werden.Further, it is preferably provided that the coating is applied over the surface of the cover in different thicknesses on the fabric material. For example, the coating may be applied to the collar with a different thickness than on the base surface of the cover. Also in the area of the base itself different coating thicknesses can be applied to the fabric material, so that areas which are exposed to particularly high loads, a coating of greater thickness than areas which are exposed to lower loads. By applying the coating in different thicknesses, the coating and thus the fabric material or the cover can be individually adapted to a wide variety of requirements.

Nach einer weiter vorteilhaften Ausgestaltung der Erfindung ist das Gewebematerial aus mehreren Gewebebahnen ausgebildet, wobei zwei aneinander angrenzende Gewebebahnen an den sich überlappenden Randbereichen jeweils zumindest einmal umgeschlagen ausgebildet sind und im Bereich der sich überlappenden, umgeschlagenen Randbereiche miteinander vernäht sind. Durch eine derartige Ausbildung des Gewebematerials bzw. der Verarbeitung des Gewebematerials an den Randbereichen zweier aneinander angrenzender Gewebebahnen kann ein Auseinanderziehen der Gewebefasern der Gewebebahnen bzw. des Gewebematerials an ihren Randbereichen verhindert werden, wobei die Zugkraft bei Belastung unmittelbar in den Nahtfaden im Bereich der miteinander vernähten sich überlappenden, umgeschlagenen Randbereiche eingeleitet werden kann, so dass die Belastung von den Gewebefasern in den Nahtfaden geleitet werden kann. Hierdurch kann die Stabilität des Gewebematerials und damit des Abdeckelements, insbesondere der Grundfläche des Abdeckelements, weiter verbessert werden. Die Naht selber ist vorzugsweise mit einem 6-Loch Kreuzstich ausgeführt, um eine besonders stabile Naht und damit eine besonders stabile Verbindungsstelle zweier aneinandergrenzender Gewebebahnen zu erreichen.According to a further advantageous embodiment of the invention, the fabric material is formed from a plurality of fabric webs, wherein two adjoining fabric webs are formed at the overlapping edge regions each at least once folded and in the region of overlapping, folded edge areas together sewn. By such a design of the fabric material or the processing of the fabric material at the edge regions of two adjacent fabric webs, a pulling apart of the fabric fibers of the fabric webs or of the fabric material can be prevented at their edge regions, wherein the tensile force under load directly into the suture in the region of sewn together overlapping, folded edge areas can be initiated so that the load from the fabric fibers can be directed into the suture. In this way, the stability of the fabric material and thus of the cover, in particular the base of the cover, can be further improved. The seam itself is preferably carried out with a 6-hole cross-stitch in order to achieve a particularly stable seam and thus a particularly stable joint of two adjacent fabric webs.

Zur weiteren Verstärkung der Naht im Bereich der miteinander vernähten sich überlappenden, umgeschlagenen Randbereiche zweier aneinander angrenzender Gewebebahnen ist es weiter vorzugsweise vorgesehen, dass im Bereich der überlappenden Randbereiche zweier Gewebebahnen ein Stabilisierungsband mit eingenäht ist. Das Stabilisierungsband kann beispielsweise in Form eines Gurtbandes ausgebildet sein. Dadurch ist es möglich, dass an den sich überlappenden Randbereichen zweier Gewebebahnen vier Lagen Gewebematerial und eine Lage Stabilisierungsband miteinander vernäht sind. Dadurch kann eine Nahtfestigkeit erreicht werden, welcher der Festigkeit des Gewebematerials selber entspricht.To further reinforce the seam in the region of the overlapped, folded-over edge regions of two adjoining fabric webs, which are sewn together, it is further preferably provided that a stabilization tape is sewn in in the region of the overlapping edge regions of two fabric webs. The stabilizing band may be formed, for example in the form of a webbing. This makes it possible that four layers of fabric material and a layer of stabilizing tape are sewn together at the overlapping edge regions of two fabric webs. As a result, a seam strength can be achieved, which corresponds to the strength of the fabric material itself.

Eine weiter vorteilhafte Ausgestaltung der Erfindung sieht vor, dass das Abdeckelement im Bereich seiner Grundfläche Verstärkungselemente aufweist, wobei ein Verstärkungselement jeweils einen ersten Anschlagspunkt mit einem dem ersten Anschlagspunkt gegenüberliegenden Anschlagspunkt verbindet. Durch das Vorsehen eines Verstärkungselements zwischen zwei sich gegenüberliegenden Anschlagspunkten können Spannungsrisse in dem Abdeckelement bzw. in dem Gewebematerial des Abdeckelements verhindert werden. Die Verstärkungselemente sind dabei entlang der Spannungslinien innerhalb des Abdeckelements vorgesehen, welche bevorzugt zwischen zwei sich gegenüberliegenden Anschlagspunkten ausgebildet sind. Dadurch kann das Abdeckelement mittels der Verstärkungselemente, welche bevorzugt als Verstärkungsband, insbesondere als Gurtband, ausgebildet sind, an den Spannungslinien zwischen den Anschlagspunkten verstärkt werden. Die auf das Abdeckelement wirkenden Kräfte können über die Verstärkungselemente unmittelbar in die Anschlagspunkte geleitet werden, wodurch das Abdeckelement und damit das Gewebematerial des Abdeckelements entlastet werden kann.A further advantageous embodiment of the invention provides that the cover in the region of its base has reinforcing elements, wherein a reinforcing element in each case connects a first attachment point with a stop point opposite the first attachment point. By providing a reinforcing element between two opposing attachment points stress cracks in the cover or in the fabric material of the cover can be prevented. The reinforcing elements are provided along the stress lines within the cover, which are preferably formed between two opposing abutment points. This allows the cover by means of the reinforcing elements, which are preferably designed as a reinforcing strip, in particular as a webbing, at the voltage lines between the stop points be strengthened. The forces acting on the cover forces can be passed directly through the reinforcing elements in the stop points, whereby the cover and thus the fabric material of the cover can be relieved.

Die Verstärkungselemente sind bevorzugt zumindest teilweise in das Gewebematerial des Abdeckelements eingearbeitet bzw. mit diesem an signifikanten Stellen verbunden. Hierbei sind die Verstärkungselemente vorzugsweise zumindest teilweise mit dem Gewebematerial des Abdeckelements vernäht und enden jeweils in den Anschlagpunkten. Die Verstärkungselemente können aber auch in das Gewebematerial des Abdeckelements eingeklebt sein.The reinforcing elements are preferably at least partially incorporated into the fabric material of the cover or connected thereto at significant locations. Here, the reinforcing elements are preferably at least partially sewn to the fabric material of the cover and ends in each of the attachment points. However, the reinforcing elements can also be glued into the fabric material of the cover.

Weiter sind die Verstärkungselemente vorzugsweise derart vorgesehen, dass sie ein Verstärkungsnetz auf der in Richtung des geschützten Arbeitsbereichs zeigenden Unterseite des Abdeckelements in der Gebrauchsposition des Abdeckelements ausbilden. Durch die Ausbildung eines Verstärkungsnetzes kann die Stabilität des Abdeckelements weiter erhöht werden, wobei die auf das Abdeckelement wirkende Energie bei einem Aufprall, beispielsweise eines Abbrandbrockens auf das Abdeckelement, gemindert werden kann, da der Aufprall nicht mehr von dem gesamten Abdeckelement getragen werden muss, sondern hauptsächlich in einem Bereich des Abdeckelements, welcher durch sich überkreuzende Verstärkungselemente in Form eines Kastens ausgebildet ist, dessen Fläche wesentlich kleiner ist als die Gesamtfläche des Abdeckelements, wodurch die durch den Aufprall hervorgerufenen Schwingungen in dem Abdeckelement deutlich reduziert werden können, wodurch wiederum die Lebensdauer des Abdeckelements deutlich erhöht werden kann.Further, the reinforcing elements are preferably provided such that they form a reinforcing mesh on the underside of the cover element pointing in the direction of the protected working area in the use position of the cover element. By forming a reinforcing mesh, the stability of the cover can be further increased, wherein the force acting on the cover energy in an impact, such as a Abbrandbrockens on the cover, can be reduced because the impact no longer needs to be borne by the entire cover, but mainly in a region of the cover element which is formed by cross-over reinforcing elements in the form of a box whose surface is substantially smaller than the total surface of the cover, whereby the vibrations caused by the impact can be significantly reduced in the cover, which in turn reduces the life of the Covering can be significantly increased.

Die Erfindung betrifft ferner die Verwendung eines wie vorstehend aus- und weitergebildeten Systems zur Ausbildung eines geschützten Arbeitsbereiches innerhalb eines Arbeitsraumes eines fossilbefeuerten, insbesondere braunkohlebefeuerten, oder müllbefeuerten Dampferzeugers, einer Müllverbrennungsanlage, eines Gichtgaskraftwerks, eines Schornsteins, eines Silos und/oder eines Bunkers.The invention furthermore relates to the use of a system designed and developed as described above for forming a protected working area within a working space of a fossil-fired, in particular lignite-fired, or waste-fired steam generator, a waste incineration plant, a top gas power plant, a chimney, a silo and / or a bunker.

Nachfolgend wird die Erfindung unter Bezugnahme auf die anliegenden Zeichnungen anhand bevorzugter Ausführungsformen näher erläutert.The invention will be explained in more detail with reference to the accompanying drawings with reference to preferred embodiments.

Es zeigen:

Fig. 1
eine schematische Darstellung eines Schnittes durch einen Arbeitsraum in Form einer Brennkammer eines Dampferzeugers,
Fig. 2
eine schematische Darstellung eines Teilausschnittes eines erfindungsgemäßen Abdeckelements befestigt an der Wandung des Arbeitsraumes,
Fig. 3
eine schematische Darstellung sich überlappender Randbereiche zweier aneinander angrenzender Gewebebahnen des erfindungsgemäßen Abdeckelements, und
Fig. 4
eine schematische Darstellung eines erfindungsgemäßen Abdeckelements in einer Gebrauchsposition mit entlang der Grundfläche des Abdeckelements vorgesehenen Verstärkungselementen.
Show it:
Fig. 1
a schematic representation of a section through a working space in the form of a combustion chamber of a steam generator,
Fig. 2
a schematic representation of a partial section of a cover according to the invention attached to the wall of the working space,
Fig. 3
a schematic representation of overlapping edge regions of two adjacent fabric webs of the cover according to the invention, and
Fig. 4
a schematic representation of a cover according to the invention in a use position with provided along the base of the cover member reinforcing elements.

Fig. 1 zeigt in einer schematischen Schnittdarstellung einen insgesamt mit 10 bezeichneten Feuerraum in der Ausgestaltung als fossilbefeuerter oder müllbefeuerter Dampferzeuger in einer Teildarstellung, die den Feuerraum bzw. die Brennkammer 12 ohne Darstellung der Brenner umfasst, wobei bei diesem Ausführungsbeispiel die Brennkammer 12 des Dampferzeugers den Arbeitsraum darstellt, innerhalb welchem ein System zur Ausbildung eines geschützten Arbeitsbereiches vorgesehen wird. Bei dem Dampferzeuger 10 handelt es sich vorzugsweise um einen braunkohlestaubbefeuerten Dampfkessel, wobei der Begriff "fossilbefeuert" oder auch "müllbefeuert" alle fossilen Brennstoffe, also beispielsweise auch Steinkohle und Öl umfasst. Ebenfalls nicht dargestellt sind die an der Innenseite der Brennkammerwände vertikal verlaufenden Heizrohre oder Heizrohrspiralen. Unterhalb der Brennkammer 12 ist ein Aschetrichter 14 mit einer zentralen Ascheaustragsöffnung 16 ausgebildet. Oberhalb der Brennkammer 12 sind horizontal ausgerichtete, in ihrer Gesamtheit die Querschnittsfläche des Dampferzeugers 10 bzw. der Brennkammer 12 überdeckende Heizflächen, sogenannte Bündelheizflächen 18 angeordnet. Die freie Querschnittsfläche der Brennkammer 12 ist rechteckig, insbesondere im Wesentlichen quadratisch ausgebildet, wobei eine Seitenlänge 20 ca. 21 m beträgt. Die Brennkammer 12 ist umlaufend von einer Wandung 22 umschlossen. Fig. 1 shows a schematic sectional view of a generally designated 10 combustion chamber in the embodiment as a fossil-fueled or garbage-fired steam generator in a partial representation comprising the combustion chamber or combustion chamber 12 without representation of the burner, in this embodiment, the combustion chamber 12 of the steam generator is the working space, within which a system for forming a protected work area is provided. The steam generator 10 is preferably a lignite-fired steam boiler, wherein the term "fossil-fired" or "waste-fired" includes all fossil fuels, ie, for example, hard coal and oil. Also not shown are the on the inside of the combustion chamber walls vertically extending heating pipes or Heizrohrspiralen. Below the combustion chamber 12, an ash hopper 14 is formed with a central ash discharge opening 16. Above the combustion chamber 12 horizontally oriented, in its entirety, the cross-sectional area of the steam generator 10 and the combustion chamber 12 overlapping heating surfaces, so-called Bündelheizflächen 18 are arranged. The free cross-sectional area of the combustion chamber 12 is rectangular, in particular substantially square, where a side length 20 is about 21 m. The combustion chamber 12 is circumferentially enclosed by a wall 22.

Zur Einbringung eines Abdeckelementes 24 ist die Brennkammer 12 bei der in Fig. 1 gezeigten Ausführungsform mit Öffnungen 26a, 26b in der Wandung 22 versehen, durch welche hindurch der Innenraum der Brennkammer 12 von außen zugänglich ist. In der Fig. 1 sind sowohl eine Öffnung 26a als auch eine Öffnung 26b dargestellt, wobei es ausreicht, wenn lediglich eine der beiden Öffnungen 26a oder 26b vorhanden ist. Durch die jeweilige Öffnung 26a oder 26b hindurch, die als alternative und optionale Möglichkeiten beide in der Fig. 1 eingezeichnet sind, wird ein zusammengefaltetes oder zusammengeklapptes oder zusammengerolltes Abdeckelement 24, dessen Zustand schematisch durch die Form einer Ellipse in der Fig. 1 angedeutet ist, von außen in den Innenraum der Brennkammer 12 bzw. den Innenraum des Aschetrichters 14 eingeschoben. Alternativ ist es aber auch möglich, dass das zusammengefaltete oder zusammengerollte Abdeckelement 24 über eine hier nicht gezeigte Öffnung im Nachbrennrost des Dampferzeugers 10 in die Brennkammer 12 eingebracht wird.For introducing a cover 24, the combustion chamber 12 at the in Fig. 1 shown embodiment with openings 26a, 26b in the wall 22, through which the interior of the combustion chamber 12 is accessible from the outside. In the Fig. 1 Both an opening 26a and an opening 26b are shown, it being sufficient if only one of the two openings 26a or 26b is present. Through the respective opening 26a or 26b, which as an alternative and optional possibilities both in the Fig. 1 are drawn, a folded or collapsed or rolled-up cover 24, whose state is schematically represented by the shape of an ellipse in the Fig. 1 is indicated, inserted from the outside into the interior of the combustion chamber 12 and the interior of the ash hopper 14. Alternatively, however, it is also possible for the folded or rolled-up covering element 24 to be introduced into the combustion chamber 12 via an opening, not shown here, in the afterburning grid of the steam generator 10.

Vor dem Einziehen, während des Einziehens oder spätestens am Ende nach Abschluss des Einzug- und Einbringvorganges des Abdeckelements 24 werden an dem Abdeckelement 24 Hebe- und/oder Spannseile 30a, 30b befestigt. Die Hebe- und/oder Spannseile 30a, 30b sind zuvor durch im oberen Bereich der Brennkammer 12 im Bereich der Bündelheizfläche 18 in der Wandung 7 der Brennkammer 12 ausgebildete Durchgangsöffnungen 32 hindurch von außen ins Innere der Brennkammer 12 eingeführt worden. Diese Hebe- und/oder Spannseile werden an dem Abdeckelement 24 befestigt. Das Abdeckelement 24 wird, nachdem es vollständig in die Brennkammer 12 eingeführt worden ist, aufgefaltet, ausgerollt oder aufgeklappt und mit Hilfe der Hebe- und/oder Spannseile 30a, 30b, die an dem Abdeckelement 24 befestigt werden, in die Gebrauchsposition 34 des aufgefalteten Abdeckelementes 24 gebracht. Dies geschieht dadurch, dass von außen an den Hebeund/oder Spannseilen in Richtung der Pfeile 36 gezogen wird. Die Gebrauchsposition 34 befindet sich in Höhe der Durchgangsöffnungen 32. In dieser Höhe überspannt das Abdeckelement 24 die Querschnittsfläche der Brennkammer 12 vollständig, so dass sich unterhalb des Abdeckelementes 24 in dessen Gebrauchsposition 34 ein geschützter Arbeitsbereich ausbildet, in den keine von den Bündelheizflächen 18 herabfallende Abbrand-, Schlacke- oder Aschebrocken hineinfallen werden/können. Derartige Abbrand-, Asche- oder Schlackebrocken werden von dem Abdeckelement 24 aufgefangen und bleiben auf dessen in Richtung Bündelheizfläche 18 zeigenden Oberseite liegen.Before pulling in, while pulling or at the latest at the end after completion of the insertion and insertion of the cover 24 24 lifting and / or tensioning cables 30a, 30b are attached to the cover. The lifting and / or tensioning cables 30a, 30b have previously been introduced from the outside into the interior of the combustion chamber 12 through passage openings 32 formed in the upper part of the combustion chamber 12 in the region of the bundle heating surface 18 in the wall 7 of the combustion chamber 12. These lifting and / or tensioning cables are fastened to the cover element 24. The cover 24 is, after it has been fully inserted into the combustion chamber 12, unfolded, rolled or unfolded and with the help of the lifting and / or tensioning cables 30a, 30b, which are secured to the cover 24 in the use position 34 of the unfolded cover 24 brought. This is done by pulling on the lifting and / or tensioning cables in the direction of the arrows 36 from the outside. The use position 34 is located at the level of the through-openings 32. At this height, the cover element 24 completely spans the cross-sectional area of the combustion chamber 12, so that below the cover element 24 in its use position 34 a protected area is created Working area forms in which no falling from the bundle heating surfaces 18 erosion, slag or ashes are falling into / can. Such erosion, ash or slag drifts are collected by the cover element 24 and remain on its upper side pointing in the direction of the bundle heating surface 18.

Fig. 2 zeigt einen Teilausschnitt eines erfindungsgemäßen Abdeckelements 24 in seiner Gebrauchsposition 34. Das Abdeckelement 24 weist eine in der hier gezeigten Gebrauchsposition 34 eben ausgebildete Grundfläche 38 und einen Kragen 40 auf, wobei der Kragen 40 entlang der Randbereiche der Grundfläche 38 umlaufend ausgebildet ist und in der Gebrauchsposition 34 unmittelbar an der Wandung 22 des Arbeitsraumes bzw. der hier gezeigten Brennkammer 12 anliegt. Der Kragen 40 ist in der hier gezeigten Gebrauchsposition 34 des Abdeckelements 24 in einem gespannten Zustand dargestellt, bei welchem der Kragen 40 winklig zu der Grundfläche 38 des Abdeckelements 24 ausgebildet ist. Fig. 2 shows a partial section of a cover according to the invention 24 in its use position 34. The cover 24 has a flat in the use position shown 34 base 38 and a collar 40, wherein the collar 40 along the edge regions of the base 38 is formed circumferentially and in the position of use 34 is applied directly to the wall 22 of the working space or the combustion chamber 12 shown here. The collar 40 is shown in the use position 34 of the cover 24 shown here in a tensioned state, in which the collar 40 is formed at an angle to the base 38 of the cover 24.

Um ein sicheres Anliegen des Kragens 40 an der Wandung 22 zu jeder Zeit in der Gebrauchsposition 34 gewährleisten zu können, ist der Kragen 40 mittels eines im Wesentlichen unflexibel ausgebildeten Befestigungsmittels 42, in diesem Fall einem Seil, an der Wandung 22 befestigt. Das Befestigungsmittel 42 ist an einem in einer an einem Endbereich 44 des Kragens 40 ausgebildeten Tasche 46 angeordneten Profils 48 befestigt, wobei die Tasche 46 und das Profil 48 vorzugsweise über die gesamte Länge des Kragens 40 an dem Endbereich 44 ausgebildet sind.In order to ensure a secure contact of the collar 40 on the wall 22 at any time in the use position 34, the collar 40 by means of a substantially inflexible fastening means 42, in this case a rope attached to the wall 22. The fastening means 42 is fastened to a profile 48 arranged in a pocket 46 formed on an end region 44 of the collar 40, the pocket 46 and the profile 48 preferably being formed over the entire length of the collar 40 at the end region 44.

Zusätzlich zu der Befestigung des Abdeckelements 24 über den Kragen 40 ist das Abdeckelement 24 in der Gebrauchsposition 34 über die Hebe- und oder Spannseile 30a, 30b an der Wandung 22 der Brennkammer 12 befestigt, welche an der Grundfläche 38 des Abdeckelements 24 angeordnet sind. Die Hebe- und/oder Spannseile 30a, 34b sind dabei zumindest teilweise elastisch ausgebildet. Die Hebe- und/oder Spannseile 30a, 30b sind zusammen mit den Befestigungsmitteln 42 jeweils in einem an der Wandung 22 vorgesehenen Führungsmittel 50 gemeinsam geführt.In addition to the attachment of the cover 24 via the collar 40, the cover 24 is secured in the use position 34 via the lifting and or tensioning cables 30a, 30b on the wall 22 of the combustion chamber 12, which are arranged on the base 38 of the cover 24. The lifting and / or tensioning cables 30a, 34b are at least partially elastic. The lifting and / or tensioning cables 30a, 30b are guided together with the fastening means 42 in each case in a guide means 50 provided on the wall 22.

Das Abdeckelement 24 ist aus einem Gewebematerial ausgebildet, welches mit einer Beschichtung versehen ist. Das Abdeckelement 24 ist dabei aus mehreren Gewebebahnen 52a, 52b gebildet, welche im Wesentlichen parallel zueinander verlaufen. Zwei aneinander angrenzende Gewebebahnen 52a, 52b sind dabei, wie in Fig. 3 zu erkennen ist, an den sich überlappenden Randbereichen 54a, 54b jeweils einmal umgeschlagen ausgebildet und im Bereich der sich überlappenden, umgeschlagen Randbereiche 54a, 54b miteinander vernäht. Zusätzlich ist in dem Bereich der sich überlappenden, umgeschlagenen Randbereiche 54a, 54b ein Stabilisierungselement 56 in Form eines Gurtbandes mit eingenäht.The cover member 24 is formed of a fabric material provided with a coating. The cover member 24 is formed of a plurality of fabric webs 52a, 52b, which extend substantially parallel to each other. Two adjoining fabric webs 52a, 52b are there, as in FIG Fig. 3 can be seen, at the overlapping edge regions 54a, 54b each formed once turned over and sewn together in the region of overlapping, folded edge portions 54a, 54b. In addition, in the region of the overlapping, folded-over edge regions 54a, 54b, a stabilizing element 56 in the form of a webbing is sewn in.

Zur weiteren Stabilisierung des Abdeckelements 24 kann das Abdeckelement 24, wie in Fig. 4 gezeigt ist, im Bereich seiner Grundfläche 38 Verstärkungselemente 58 aufweisen, wobei jeweils ein Verstärkungselement 58 einen ersten Anschlagspunkt 60a, an welchem ein Hebeund/oder Spannseil 30a, 30b befestigbar ist, mit einem dem ersten Anschlagspunkt 60a gegenüberliegenden Anschlagspunkt 60b verbindet. Die Verstärkungselemente 58 sind überkreuz über die gesamte Fläche der Grundfläche 38 des Abdeckelements 24 vorgesehen, so dass sie eine Art Verstärkungsnetz auf der in Richtung des geschützten Arbeitsbereichs zeigenden Unterseite des Abdeckelements 24 in der Gebrauchsposition 34 des Abdeckelements 24 ausbilden. Die Verstärkungselemente 58 sind in Form von Verstärkungsbändern, insbesondere in Form von Gurtbändern, ausgebildet, welche zumindest teilweise in das Gewebematerial des Abdeckelements 24 eingearbeitet, insbesondere eingenäht, sind.For further stabilization of the cover 24, the cover 24, as in Fig. 4 is shown, in the region of its base 38 reinforcing elements 58, wherein in each case a reinforcing element 58 connects a first stop point 60a, to which a lifting and / or tensioning cable 30a, 30b can be fastened, with a stop point 60b opposite the first stop point 60a. The reinforcing elements 58 are provided in cross-over the entire surface of the base 38 of the cover 24, so that they form a kind of reinforcing mesh on the underside of the cover 24 in the use position 34 of the cover 24 in the direction of the protected working area. The reinforcing elements 58 are in the form of reinforcing bands, in particular in the form of straps, which are at least partially incorporated in the fabric material of the cover 24, in particular sewn.

Claims (17)

System zur Ausbildung eines geschützten Arbeitsbereiches innerhalb eines durch eine Wandung (22) begrenzten Arbeitsraumes (12), umfassend ein zusammengefaltet oder aufgerollt in den Arbeitsraum (12) einbringbares, dort in eine Gebrauchsposition (34) positionierbares und auffaltbares oder ausrollbares Abdeckelement (24) und mindestens ein durch eine Durchgangsöffnung (32) in der Wandung (22) in den Arbeitsraum (12) einführbares und an an dem Abdeckelement (24) vorgesehenen Anschlagspunkten (60a, 60b) befestigbares Hebe- und/oder Spannseil (30a, 30b), wobei in der Gebrauchsposition (34) das Abdeckelement (12) die Querschnittsfläche des Arbeitsraumes (12) vollständig überspannt und unter sich einen geschützten Arbeitsbereich ausbildet,
dadurch gekennzeichnet, dass
das Abdeckelement (24) entlang der Randbereiche der Grundfläche (38) des Abdeckelements (24) einen umlaufenden Kragen (40) aufweist, wobei der Kragen (40) in der Gebrauchsposition (34) unmittelbar an der Wandung (22) des Arbeitsraumes (12) anliegt.System for forming a protected working area within a working space (12) delimited by a wall (22), comprising a covering element (24) which can be folded or rolled up into the working space (12), positioned there in a position of use (34) and unfoldable or rollable at least one lifting and / or tensioning cable (30a, 30b), which can be fastened by a passage opening (32) in the wall (22) into the working space (12) and can be fastened to the cover element (24) (60a, 60b), wherein in the use position (34), the cover element (12) completely spans the cross-sectional area of the working space (12) and forms a protected working area below it,
characterized in that
the cover element (24) has a circumferential collar (40) along the edge regions of the base surface (38) of the cover element (24), the collar (40) being in the use position (34) directly on the wall (22) of the working chamber (12). is applied. System nach Anspruch 1, dadurch gekennzeichnet, dass in einem gespannten Zustand des Abdeckelements (24) in der Gebrauchsposition (34) der Kragen (40) winklig, vorzugsweise mit einem Winkel 0° < α ≤ 90°, zu der Grundfläche (38) des Abdeckelements (24) ausgebildet ist.System according to claim 1, characterized in that in a tensioned state of the cover element (24) in the use position (34) the collar (40) at an angle 0 ° <α ≤ 90 °, at an angle to the base surface (38) of the Covering element (24) is formed. System nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Kragen (40) in der Gebrauchsposition (34) mittels eines im Wesentlichen unflexibel ausgebildeten Befestigungsmittels (42) an der Wandung (22) des Arbeitsraumes (12) befestigbar/befestigt ist.System according to claim 1 or 2, characterized in that the collar (40) in the use position (34) by means of a substantially inflexible fastening means (42) on the wall (22) of the working space (12) attachable / fastened. System nach Anspruch 3, dadurch gekennzeichnet, dass in der Gebrauchsposition (34) das im Wesentlichen unflexibel ausgebildete Befestigungsmittel (42) zusammen mit dem Hebe- und/oder Spannseil (30a, 30b) in einem an der Wandung (22) des Arbeitsraumes (12) vorgesehenen Führungsmittel (50) geführt ist.System according to claim 3, characterized in that in the use position (34) the substantially inflexible fastening means (42) together with the lifting and / or tensioning cable (30a, 30b) in a on the wall (22) of the working space (12 ) Guiding means (50) is guided. System nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Hebeund/oder Spannseil (30a, 30b) an der Grundfläche (38) des Abdeckelements (24) befestigbar ist, wobei das Hebe- und/oder Spannseil (30a, 30b) auf dynamische Beanspruchung ausgelegt ist.System according to one of claims 1 to 4, characterized in that the lifting and / or tensioning cable (30a, 30b) on the base surface (38) of the cover (24) can be fastened, wherein the lifting and / or tensioning cable (30a, 30b) is designed for dynamic loading. System nach Anspruch 5, dadurch gekennzeichnet, dass das Hebe- und/oder Spannseil (30a, 30b) zumindest teilweise elastisch ausgebildet ist und/oder eine Zugfeder und/oder eine Stoßbremse aufweist.System according to claim 5, characterized in that the lifting and / or tensioning cable (30a, 30b) is at least partially elastic and / or has a tension spring and / or an impact brake. System nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass eine Messeinrichtung zur Bestimmung dynamischer und/oder statischer Beanspruchungen vorgesehen ist.System according to one of claims 1 to 6, characterized in that a measuring device is provided for determining dynamic and / or static stresses. System nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Abdeckelement (24) aus einem Gewebematerial ausgebildet ist.System according to one of claims 1 to 7, characterized in that the cover (24) is formed of a fabric material. System nach Anspruch 8, dadurch gekennzeichnet, dass das Gewebematerial eine Beschichtung aufweist.System according to claim 8, characterized in that the fabric material has a coating. System nach Anspruch 9, dadurch gekennzeichnet, dass die Beschichtung aus einem Polyurethan und/oder einem Cloropren-Kautschuk ausgebildet ist.System according to claim 9, characterized in that the coating is formed of a polyurethane and / or a chloroprene rubber. System nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass die Beschichtung über die Fläche des Abdeckelements (24) in unterschiedlichen Dicken auf das Gewebematerial aufgebracht ist.System according to claim 9 or 10, characterized in that the coating over the surface of the cover (24) is applied in different thicknesses on the fabric material. System nach einem der Ansprüche 8 bis 11, dadurch gekennzeichnet, dass das Gewebematerial aus mehreren Gewebebahnen (52a, 52b) ausgebildet ist, wobei zwei aneinander angrenzende Gewebebahnen (52a, 52b) an den sich überlappenden Randbereichen (54a, 54b) jeweils zumindest einmal umgeschlagen ausgebildet sind und im Bereich der sich überlappenden, umgeschlagenen Randbereiche (54a, 54b) miteinander vernäht sind.System according to one of claims 8 to 11, characterized in that the fabric material of a plurality of fabric webs (52a, 52b) is formed, wherein two adjoining fabric webs (52a, 52b) at the overlapping edge regions (54a, 54b) each turned at least once are formed and are sewn together in the region of the overlapping, folded edge regions (54a, 54b). System nach Anspruch 12, dadurch gekennzeichnet, dass im Bereich der sich überlappenden, umgeschlagenen Randbereiche (54a, 54b) zweier Gewebebahnen (52a, 52b) ein Stabilisierungsband (56) mit eingenäht ist.System according to claim 12, characterized in that in the region of the overlapping, folded-over edge regions (54a, 54b) of two fabric webs (52a, 52b) a stabilizing band (56) is sewn in. System nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass das Abdeckelement (24) im Bereich seiner Grundfläche (38) Verstärkungselemente (58) aufweist, wobei ein Verstärkungselement (58) jeweils einen ersten Anschlagspunkt (60a) mit einem dem ersten Anschlagspunkt (60a) gegenüberliegenden zweiten Anschlagspunkt (60b) verbindet.System according to one of claims 1 to 14, characterized in that the cover (24) in the region of its base (38) reinforcing elements (58), wherein a reinforcing element (58) each have a first attachment point (60a) with a the first attachment point (60). 60a) opposite the second attachment point (60b). System nach Anspruch 14, dadurch gekennzeichnet, dass die Verstärkungselemente (58) zumindest teilweise in das Gewebematerial des Abdeckelements (24) eingearbeitet sind.System according to claim 14, characterized in that the reinforcing elements (58) are at least partially incorporated in the fabric material of the cover (24). System nach Anspruch 14 oder 15, dadurch gekennzeichnet, dass die Verstärkungselemente (58) derart vorgesehen sind, dass sie ein Verstärkungsnetz auf der in Richtung des geschützten Arbeitsbereichs zeigenden Unterseite des Abdeckelements (24) in der Gebrauchsposition (34) des Abdeckelements (24) ausbilden.System according to claim 14 or 15, characterized in that the reinforcing elements (58) are provided so as to form a reinforcing net on the underside of the cover element (24) facing towards the protected working area in the use position (34) of the cover element (24) , Verwendung eines Systems nach einem der Ansprüche 1 bis 16 innerhalb eines Arbeitsraumes - eines fossilbefeuerten, insbesondere braunkohlebefeuerten, oder müllbefeuerten Dampferzeugers, - einer Müllverbrennungsanlage, - eines Gichtgaskraftwerks, - eines Schornstein - eines Silos und/oder - eines Bunkers. Use of a system according to one of claims 1 to 16 within a working space a fossil-fired, in particular lignite-fired, or waste-fired steam generator, - a waste incineration plant, - a blast furnace power plant, - a chimney - a silo and / or - a bunker.
EP11163182A 2010-05-17 2011-04-20 System for creating a protected working area within a working room separated by a wall Active EP2388519B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SI201130041T SI2388519T1 (en) 2010-05-17 2011-04-20 System for creating a protected working area within a working room separated by a wall
PL11163182T PL2388519T3 (en) 2010-05-17 2011-04-20 System for creating a protected working area within a working room separated by a wall
MEP-2013-76A ME01543B (en) 2010-05-17 2011-04-20 System for creating a protected working area within a working room separated by a wall

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010020713 2010-05-17
DE102010037628A DE102010037628A1 (en) 2010-05-17 2010-09-17 System for forming a protected working area within a working space bounded by a wall

Publications (2)

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EP2388519A1 true EP2388519A1 (en) 2011-11-23
EP2388519B1 EP2388519B1 (en) 2013-04-03

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EP11163182A Active EP2388519B1 (en) 2010-05-17 2011-04-20 System for creating a protected working area within a working room separated by a wall

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EP (1) EP2388519B1 (en)
DE (1) DE102010037628A1 (en)
DK (1) DK2388519T5 (en)
ES (1) ES2418136T3 (en)
HR (1) HRP20130598T1 (en)
ME (1) ME01543B (en)
PL (1) PL2388519T3 (en)
PT (1) PT2388519E (en)
RS (1) RS52871B (en)
SI (1) SI2388519T1 (en)
ZA (1) ZA201103569B (en)

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DE102012001618A1 (en) * 2012-01-30 2013-08-01 Babcock Borsig Steinmüller Gmbh Steam generator system for steam generation by combustion of fossil fuel in finely-ground form, has boiler with boiler hopper, where pad for closing outlet opening is provided in boiler hopper, which is inflatable outside boiler hopper
CN108320823A (en) * 2018-03-20 2018-07-24 阳江核电有限公司 Junk prevention platform in Nuclear Condenser

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DE102018007218A1 (en) * 2018-09-12 2020-03-12 Balcke-Dürr GmbH Steam generator boiler, power plant or waste incineration plant and method for securing maintenance work on a steam generator boiler

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GB920108A (en) * 1960-12-16 1963-03-06 Babcock & Wilcox Ltd Improvements in or relating to furnace chambers
DE1167476B (en) 1963-07-31 1964-04-09 Ver Kesselwerke Ag Work platform construction in firing and radiation rooms of steam generators and industrial ovens
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DE102012001618A1 (en) * 2012-01-30 2013-08-01 Babcock Borsig Steinmüller Gmbh Steam generator system for steam generation by combustion of fossil fuel in finely-ground form, has boiler with boiler hopper, where pad for closing outlet opening is provided in boiler hopper, which is inflatable outside boiler hopper
CN108320823A (en) * 2018-03-20 2018-07-24 阳江核电有限公司 Junk prevention platform in Nuclear Condenser
CN108320823B (en) * 2018-03-20 2024-05-07 阳江核电有限公司 Anti-falling platform in nuclear power condenser

Also Published As

Publication number Publication date
PT2388519E (en) 2013-06-18
EP2388519B1 (en) 2013-04-03
HRP20130598T1 (en) 2013-07-31
DK2388519T3 (en) 2013-07-01
ES2418136T3 (en) 2013-08-12
PL2388519T3 (en) 2013-12-31
DK2388519T5 (en) 2013-08-12
ZA201103569B (en) 2012-01-25
RS52871B (en) 2013-12-31
DE102010037628A1 (en) 2011-11-17
ME01543B (en) 2014-04-20
SI2388519T1 (en) 2013-08-30

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