EP1826482B9 - Sicherheitsabschottung einer Brennkammmer eines Dampferzeugers - Google Patents

Sicherheitsabschottung einer Brennkammmer eines Dampferzeugers Download PDF

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Publication number
EP1826482B9
EP1826482B9 EP06122369A EP06122369A EP1826482B9 EP 1826482 B9 EP1826482 B9 EP 1826482B9 EP 06122369 A EP06122369 A EP 06122369A EP 06122369 A EP06122369 A EP 06122369A EP 1826482 B9 EP1826482 B9 EP 1826482B9
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
cover member
opening
lifting
cover
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.)
Active
Application number
EP06122369A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1826482B1 (de
EP1826482A1 (de
Inventor
Hans Gerhard Dipl. Ing. Sterns
Lothar Dipl. Ing. Dose
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.)
Hitachi 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 SI200631102T priority Critical patent/SI1826482T1/sl
Priority to PL06122369T priority patent/PL1826482T3/pl
Publication of EP1826482A1 publication Critical patent/EP1826482A1/de
Publication of EP1826482B1 publication Critical patent/EP1826482B1/de
Application granted granted Critical
Publication of EP1826482B9 publication Critical patent/EP1826482B9/de
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 is directed to a method for forming a protected working space below a cover member and within the combustion chamber of a fossil-fired, especially lignite-fired steam generator by introducing the cover into the combustion chamber, wherein in the region between a lower discharge opening, preferably an ash funnel, and a bottom one above arranged lower, at least substantially horizontally in the combustion chamber cross-sectional area, arranged surface, in particular heating surface, in particular a Schottenterrorism functionality, laterally from the outside through a first opening in the peripheral wall of the combustion chamber a within the combustion chamber unfoldable or alsspannbares cover element is introduced.
  • the invention is directed to a system for forming a protected working space below a cover and within the combustion chamber of a fossil-fired, especially lignite-fired, steam generator, a folded or rolled laterally from the outside through a first opening in the combustion chamber wall into the combustion chamber einbringbares, there in a use position positionable and unfoldable or rollable flat cover, at least one insertable through a rope passage opening in the combustion chamber wall and fastened to the flat cover holding element, lifting and / or tensioning cable, at least one outside the combustion chamber arranged outside, with the at least one Holding, lifting and / or tensioning cable cooperating fastening device and at least one with the fastening device and / or the at least one holding, lifting and / or tensioning cable cooperating lifting device u mank.
  • the invention is directed to a steam generator provided with a system for covering a protected working space within the combustion chamber of the fossil-fired, preferably coal-fired, in particular lignite-fired, steam generator can be
  • 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 combustion chamber inside walls of the combustion chamber are provided with conduits 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 combustion chamber wall guided 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 Schottenfilanni.
  • Below the burner level in particular in coal-fired steam generators, an ash discharge funnel with a discharge opening for the ash is arranged.
  • Work scaffolding can be arranged and formed above in the area of the superheater is also from the US 5,343,978 A known.
  • There several beams are mounted within the casing and form a frame between the hanging portions of the casing arranged.
  • a folding platform comprising a base bar with hinged support arms, between which stage plates are mounted, which fill or cover the spaces between the support arms.
  • the hinged platform is inserted from below through an opening of a reactor in this, pulled vertically upwards and then unfolded below an upper reactor opening and then spans the reactor cross-sectional area.
  • a working platform which can be introduced by a lateral opening in the folded state in the combustion chamber of a steam generator, is further from the DE 38 14 961 Al known. On this platform, ropes attack, with the aid of which the platform is folded out.
  • the platform is provided with a protective roof spanning the walkway of the platform. In the unfolded state of the platform thus a covered working space is available.
  • the work platform is a conventional narrow platform, so that the platform only covers a significantly limited part of the internal free cross-sectional area of the combustion chamber. With this platform, therefore, dangerous deposits on the casing are first sought and removed in a first trip. This is followed by a transfer of the platform in adjacent positions for driving adjacent wall sections, the working platform can be set off on the floor of the combustion chamber and moved there.
  • the invention is therefore based on the object to provide a solution that allows the formation of a protected working space within the combustion chamber of a steam generator in an easy-to-handle manner.
  • this object is achieved according to the invention that in its unfoldable or alsspannbaren surface at least substantially consisting of a fabric and / or close-meshed and / or a film cover at a desired height above the lower discharge in a Positioned use position and the cross-sectional area of the combustion chamber at least partially spanning and training under trained the protected working space is spanned.
  • a covering element consisting of a close-meshed net, a fabric or a foil has a relatively low weight and can thus be introduced into the combustion chamber without problems by means of a lateral opening.
  • a manhole can be provided in the funnel side wall above a walk-in grate which is arranged above the ash outlet opening, so that the covering element can be introduced into the combustion chamber with the aid of a person and can be placed there or attached to corresponding devices.
  • Below the clamped cover is then a protected, covered workspace. In this working space, persons who carry out repair and maintenance work below the cover element are protected against potentially falling materials from the area of, for example, not yet cleaned boiler heating surfaces.
  • the cover can be introduced into the combustion chamber exclusively from the outside and with the help of there positioned outside the combustion chamber and clamped there. It is not necessary that people enter the combustion chamber or the steam generator during the clamping and later in the context of uninstalling the cover. Furthermore, with the help of the cover, which can be introduced independently of or in addition to existing work platforms in the combustion chamber, a protected working space can be created below the cover, which can be entered through this safety partition safely. It is no longer necessary, previously elaborately disposed above combustion chamber or steam generator areas of loose To liberate material. This leads to reduced downtime.
  • the invention furthermore provides that the covering element is introduced into the reactor space or the combustion chamber in the form of a folded tarpaulin or in the form of a rolled-up tarpaulin.
  • a relatively simple, i. realizable possibility without great constructive effort, politicianspannen the cover and position at the desired height within the combustion chamber can be realized according to embodiment of the invention in that the cover during the Einbringvorgangs and / or after completion of the Einbringvorgangs of holding, lifting and / or tension cables detected, moved to its use position and clamped.
  • Ropes can be easily attached, for example, by latching to the flat, designed in the form of a tarp cover and can thus be used for clamping and positioning of the cover.
  • the cover can be both first raised to its use position and then clamped as well as initially largely unfolded or folded and then pulled up to its use position.
  • the invention therefore further provides that the holding, lifting and / or tensioning cables are guided through rope passage openings in the combustion chamber, above the first opening in the peripheral wall of the combustion chamber, in particular short or immediately below the bottom of the lower surface, in particular heating surface , are arranged.
  • the invention is further characterized by the fact that the holding, lifting and / or tensioning cables outside the combustion chamber are fastened to an outside clamping frame.
  • the cover element is moved into a use or Abschottposition shortly or immediately below the lower surface, in particular heating surface.
  • a particularly good partitioning in the transition region from the inner wall of the combustion chamber to the clamped, planar cover element can be achieved in that the cover element is clamped in such a way that it slightly sags inside the combustion chamber wall and bears against the combustion chamber inner wall in this area.
  • the invention further provides that a cover is clamped whose spanned surface completely spans the combustion chamber cross-sectional area.
  • a cover is clamped, whose unfoldable or clampable surface is formed larger than the combustion chamber cross-sectional area.
  • the cover or the cover can then be clamped in a particularly favorable manner and position in the desired position within the combustion chamber when the lifting, tensioning and / or tethers cooperate with a arranged outside of the steam generator lifting device, a rolling or lifting and if desired, also allowing the ropes to relax again.
  • a lifting device cooperates with the outside clamping frame, so that the invention further provides that the holding, lifting and / or tensioning cables are moved by a cooperating with the clamping frame lifting device.
  • the invention provides that the cover is introduced through a first opening in the region of the ash hopper or by a opening into the combustion chamber, designed as a first opening remindschulgschachtö réelle into the combustion chamber. It is thus possible to use already existing existing combustion chambers openings for the application of the method according to the invention. Thus, modern combustion chambers today have stasaugö réelleen that are formed in the upper part of the combustion chamber and allow a return of flue gas to the burners. These openings can be used after stopping the steam generator for the introduction of the cover. The cover is then also supplied at a very high height of the combustion chamber. But there are also openings that are formed in the area of the ash hopper. These too can be used for carrying out the method. In particular, it is possible at new to Providing corresponding steam generators in the area of the ash hopper corresponding openings.
  • the cover in particular the unfoldable or hinged surface of the cover, preferably consists of a light, tear-resistant, wear-resistant, resistant to carbon ash and ideally reusable material.
  • the invention therefore further provides that a cover element is introduced whose unfoldable surface is formed from a material consisting at least substantially of aromatic polyamides (for example known as Kevlar® ) or polyethylene.
  • a particularly flat and firmly clamped cover can be achieved when a cover is introduced, the longitudinal opposite side edges stabilizing elements, in particular stabilizing rods has.
  • the tension and the hoisting ropes can be mechanically fixed and stable and thus the force can be conveniently introduced into the designed like a tarp cover element.
  • a stable and yet easily collapsible and also unfoldable construction of a cover can be achieved according to a further development of the invention in that a cover is introduced, the longitudinally opposite side edges segment elements, in particular segment bars having.
  • the invention therefore further provides that the cover is introduced in a standstill phase of the reactor or the firing boiler and removed again before re-commissioning through the first opening.
  • the flat cover member consists of a fabric and / or a dense mesh and / or a film and spans in its use position at least areas of the cross-sectional area of the combustion chamber and under the protected working space formed.
  • a protected working space can be formed within the combustion chamber of a steam generator, which can be set up quickly and flexibly and can be dismantled just as quickly and flexibly. No set-up times are required to significantly increase setup or setup times. In particular, this also creates the opportunity to carry out maintenance and / or repair work at relatively short notice only in the lower region of a combustion chamber.
  • the same advantages are associated with the system according to the invention, as listed above for the method.
  • a steam generator of the type described which is characterized by at least one, preferably a plurality, in particular short or immediately below a lower Schottennature Structure trained rope passage opening (s) and a first opening for introducing a flat cover into the combustion chamber of the Steam generator and a system according to one of claims 17 to 23.
  • the Fig. 1 shows a schematic sectional view of a generally designated 1 reactor in the configuration as a fossil-fired steam generator in a partial view, which includes the reactor chamber or the combustion chamber 2 without representation of the burner.
  • the steam generator 1 should be a lignite-fired steam boiler, but the aforementioned term "fossil-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. Below the combustion chamber 2, an ash hopper 3 is formed with a central ash discharge opening 4.
  • combustion chamber 2 Above the combustion chamber 2 are horizontally oriented, in their entirety, the cross-sectional area of the steam generator 1 and the combustion chamber 2 covering heating surfaces, so-called Schottensammlung vom. 5 arranged.
  • the free cross-sectional area of the combustion chamber 2 is rectangular, in particular substantially square, with a side length 6 is about 21 m.
  • the combustion chamber 2 is circumferentially enclosed by a peripheral wall 7.
  • the combustion chamber 2 is provided with first openings 9a, 9b in the peripheral wall 7, through which the interior of the combustion chamber 2 is accessible from the outside.
  • first opening 9a and a first opening 9b are shown, it being sufficient if only a first opening 9a or 9b is present.
  • first opening 9b is an opening formed by the confluence of a return suction shaft into the combustion chamber 2, which can be used to introduce a cover 8 in the interior of the combustion chamber 2.
  • first opening 9a is located in the region of the ash hopper 3 above a non-illustrated, usually present walkable grate, which is disposed within the combustion chamber 2 and within the ash hopper 3.
  • the cover 8 is, after it has been fully inserted into the combustion chamber 2, unfolded, rolled or unfolded and with the help of the holding, lifting and / or tensioning cables 11a, 11b, which are attached to the cover 8, in the cover or Abschottposition 13 of the unfolded cover 8 brought. This is done by pulling on the lifting ropes in the direction of the arrows 14 from the outside.
  • the cover or Abschottposition 13, which represents the use position of the cover 8, is located at the level of the rope passage openings 12.
  • the cover 8 spans the horizontal cross-sectional area of the combustion chamber 2 completely, so that below the cover 8 in its Abschottposition 13 a protected working space in which no falling from the Schottensammlungfest about falling slag or Aschebrocken fall into it / can. Such ash or slag scraps are collected by the cover 8 and remain on the top.
  • Fig. 2 shows now schematically, as in this case, a cover 8 in the interior of the Combustion chamber 2 is introduced.
  • the folded or rolled cover element 8 is in the Fig. 3a or Fig.
  • the protected, covered working space below the cover can then be entered by persons to carry out maintenance and / or installation work.
  • the holding, tensioning and / or hoisting ropes 11a, 11b relaxed and released, so that the cover 8 again in the amount of lowered respective first opening 9a or 9b and then folded or or is rolled, so that it can then be removed through this first opening 9a or 9b again from the interior of the combustion chamber 2.
  • this removal process can be performed in total without a person enters the combustion chamber 2.
  • the Fig. 4 shows a schematic representation in plan view from above a completely spanned within the combustion chamber 2 cover 8.
  • the cover 8 has a rectangular, in particular square shape.
  • a stabilizing element 15 in the form of a stabilizing rod covering the entire longitudinal side is formed on the cover element 8 and fastened to the side edge of the cover element 8.
  • the other longitudinal sides of the cover 8 have along the respective side edge arranged, a plurality of segment elements 16 in the form of segment bars. Between the segment bars 16 respectively fold lines 17 are formed, along which the cover 8 is collapsible.
  • tension cables 11, 11a and 11b which are arranged with their opposite sides or ends or end portions of a fastening device 18, which consists of a total of four fasteners 18a, 18b, 18c, 18d, the outside on and on form the combustion chamber 2 arranged clamping frame.
  • a fastening device 18 which consists of a total of four fasteners 18a, 18b, 18c, 18d
  • the cover element 8 consists in its collapsible or foldable and collapsible or rollable surface of a fabric or a close mesh or a flexible film, / consists of an aromatic polyamide, in particular of Kevlar ® , or polyethylene. This is a tear-resistant, lightweight, wear-resistant, resistant to coal and optionally reusable, ie recyclable material.
  • the cover element 8 In the unfolded state, the cover element 8 is quasi a tarpaulin, a tarpaulin, dar.
  • reinforcements which may be formed for example by folded material areas provided.
  • the stabilizing elements 15 or segment elements 16 are arranged and fixed, which consist of aluminum or a carbon / aramid compound material.
  • the holding, lifting and / or tensioning cables 11, 11a, 11b are sheathed steel wire ropes.
  • the clamping frame 18 is disposed outside of the combustion chamber 2 and arranged on a usually existing there steel framework or existing there steel structure that the forces are absorbed and intercepted by this steel structure.
  • a transport and storage box is provided in which these Items are stored.
  • the embodiment relates to a steam generator
  • the invention is quite generally applicable to all reactors in which a covered or foreclosed working space is to be created below a cover element 8 within a reactor space.
  • the reactor space then corresponds to the combustion chamber 2 and the reactor wall of the peripheral wall 7, wherein the reactor chamber cross-section but also in a circular, oval or in any other form from a rectangular or square surface may be different.
  • the method according to the invention or the system according to the invention can also be provided in addition to any working platforms present or to be installed in the burner chamber 2.
  • any working platforms present or to be installed in the burner chamber 2 For example, it is then possible for 8 people to work on a working platform moving from top to bottom in the combustion chamber 2 and at the same time under a covering element clamped underneath.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid-Fuel Combustion (AREA)
  • Devices For Medical Bathing And Washing (AREA)
  • Air Bags (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Combustion Of Fluid Fuel (AREA)
EP06122369A 2005-11-04 2006-10-16 Sicherheitsabschottung einer Brennkammmer eines Dampferzeugers Active EP1826482B9 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200631102T SI1826482T1 (sl) 2005-11-04 2006-10-16 Nameščanje varnostne pregrade v gorilni komori generatorja pare
PL06122369T PL1826482T3 (pl) 2005-11-04 2006-10-16 Przegroda bezpieczeństwa komory spalania wytwarzacza pary

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005053048A DE102005053048B4 (de) 2005-11-04 2005-11-04 Sicherheitsabschottung einer Brennkammer eines Dampferzeugers

Publications (3)

Publication Number Publication Date
EP1826482A1 EP1826482A1 (de) 2007-08-29
EP1826482B1 EP1826482B1 (de) 2011-06-08
EP1826482B9 true EP1826482B9 (de) 2012-01-18

Family

ID=37949886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06122369A Active EP1826482B9 (de) 2005-11-04 2006-10-16 Sicherheitsabschottung einer Brennkammmer eines Dampferzeugers

Country Status (10)

Country Link
EP (1) EP1826482B9 (hr)
AT (1) ATE512335T1 (hr)
DE (1) DE102005053048B4 (hr)
DK (1) DK1826482T3 (hr)
ES (1) ES2367654T3 (hr)
HR (1) HRP20110638T1 (hr)
PL (1) PL1826482T3 (hr)
PT (1) PT1826482E (hr)
RS (1) RS51844B (hr)
SI (1) SI1826482T1 (hr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010037628A1 (de) * 2010-05-17 2011-11-17 Hitachi Power Europe Gmbh System zur Ausbildung eines geschützten Arbeitsbereiches innerhalb eines durch eine Wandung begrenzten Arbeitsraumes
DE102010060830A1 (de) 2010-07-23 2012-01-26 Hitachi Power Europe Gmbh Befestigungssystem eines Abdeckelements
DE102010061358A1 (de) 2010-07-23 2012-01-26 Hitachi Power Europe Gmbh Anordnung eines Abdeckelementes und einer Befahreinrichtung oder Arbeitsbühne innerhalb eines Arbeitsraumes
DE102011015497B4 (de) 2011-03-29 2018-08-23 Rwe Power Ag Anordnung zur Abschirmung eines Nachbrennrosts in einem Dampfkessel eines Kraftwerks
DE102012001618A1 (de) * 2012-01-30 2013-08-01 Babcock Borsig Steinmüller Gmbh Dampferzeugeranlage mit verschließbarem Kesseltrichter
DE102018007218A1 (de) * 2018-09-12 2020-03-12 Balcke-Dürr GmbH Dampferzeugerkessel, Kraftwerk oder Müllverbrennungsanlage und Verfahren zum Absichern von Wartungsarbeiten an einem Dampferzeugerkessel

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1167476B (de) * 1963-07-31 1964-04-09 Ver Kesselwerke Ag Arbeitsbuehnenaufbau in Feuerungs- und Strahlungsraeumen von Dampferzeugern und Industrieoefen
GB1358041A (en) * 1970-03-12 1974-06-26 Foster Wheeler Brown Boilers Inspection and/or repair of furnaces
DD158811A1 (de) * 1981-04-24 1983-02-02 Friedbert Haenel Klappbare arbeitsbuehne zum befahren stehender zylindrischer behaelter
US4474143A (en) * 1983-08-19 1984-10-02 Combustion Engineering, Inc. Retractable maintenance platform stored outside of the furnace
DE3814961A1 (de) * 1988-03-15 1989-09-28 Steingass August & Sohn Innenbefahrvorrichtung fuer brennraeume oder grossbehaelter
DD286997A5 (de) * 1989-08-15 1991-02-14 Ve Kombinat Kernkraftwerke "Bruno Leuschner",De Vorrichtung zum auffangen von aktivierten bearbeitungsrueckstaenden im reaktordruckgefaess
FR2660478B1 (fr) * 1990-04-02 1992-07-24 Framatome Sa Plancher amovible pour intervention a l'interieur d'une enveloppe telle qu'un pressuriseur de reacteur nucleaire a eau sous pression.
US5343978A (en) * 1993-04-23 1994-09-06 New York State Electric & Gas Corporation Telescoping scaffolding for maintenance and repair of multi-story, power-generating boiler systems
DE10348447B4 (de) * 2003-10-17 2014-04-03 Siemens Aktiengesellschaft Montage- und Wartungshilfsmittel für eine Gasturbine
DE10353436B4 (de) * 2003-11-15 2006-09-21 Hochtief Ag Aufklappbare Arbeitsbühne

Also Published As

Publication number Publication date
DK1826482T3 (da) 2011-09-26
ATE512335T1 (de) 2011-06-15
SI1826482T1 (sl) 2011-10-28
PL1826482T3 (pl) 2011-10-31
RS51844B (en) 2012-02-29
DE102005053048A1 (de) 2007-05-10
DE102005053048B4 (de) 2007-10-04
EP1826482B1 (de) 2011-06-08
EP1826482A1 (de) 2007-08-29
ES2367654T3 (es) 2011-11-07
HRP20110638T1 (hr) 2011-10-31
PT1826482E (pt) 2011-09-09

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