EP0622588B2 - Absperrvorrichtung für Kanäle mit grossen Querschnitten, insbesondere für Abgas- und Rauchgaskanäle von Kraftwerken - Google Patents
Absperrvorrichtung für Kanäle mit grossen Querschnitten, insbesondere für Abgas- und Rauchgaskanäle von Kraftwerken Download PDFInfo
- Publication number
- EP0622588B2 EP0622588B2 EP94104821A EP94104821A EP0622588B2 EP 0622588 B2 EP0622588 B2 EP 0622588B2 EP 94104821 A EP94104821 A EP 94104821A EP 94104821 A EP94104821 A EP 94104821A EP 0622588 B2 EP0622588 B2 EP 0622588B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- shut
- air duct
- sections
- flanges
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L11/00—Arrangements of valves or dampers after the fire
Definitions
- the invention relates to a shut-off device for Channels with large cross sections, which in the preamble of claim 1 Art.
- this type is part of the Wall of the canal is part of the External walls of the sealing air duct sections. This training is for the installation of a continuous interior insulation not suitable.
- the invention has for its object a shut-off device for channels with large cross sections, especially for exhaust and flue gas ducts from Power plants, the embodiment described above to create at which attaching continuous internal insulation is possible.
- the invention solves this problem with a generic one Shut-off device by the Features in the characterizing part of the claim 1.
- By connecting the connecting flanges to the holding flanges and the Formation of closed sealing air duct sections through the two sealing air duct parts is the use of a continuous Internal insulation possible.
- the sealing air duct sections can always expand or contract in the longitudinal direction and consequently in a well-defined manner in the course of the compensation of thermal expansions. Due to the expansion joints between the sealing air duct sections, the thermal expansion can be compensated for even if extreme temperature differences occur in shut-off devices with extremely large duct cross-sections or butterfly valves of up to 100 m 2 and more, for example. A controlled movement of the sealing air duct sections in the longitudinal direction thereof is always ensured, so that the construction according to the invention can also be easily mastered in terms of production technology. The large freedom of movement of the sealing air duct sections also results in trouble-free operation in all temperature ranges and also with rapid heating of the smoke and exhaust gases. In fact, stretches of up to 10 cm and more can easily be absorbed.
- the invention teaches that the Air purge duct to form the air purge sections following the sealing air duct corners and / or in middle area of its long and broad sides by means of Expansion joints are divided and the sealing air duct corners are fixedly connected to the duct housing.
- the Seal air duct corners therefore form the fixed points, while the compensation of thermal expansion by means of of the movable sealing air duct sections.
- For Formation of these sealing air duct sections can be corresponding Expansion joints immediately afterwards on the sealing air duct corners. But there is also the possibility, only in the area the middle of the longitudinal and broad sides of the channel To provide expansion joints.
- the invention further teaches that the connecting flanges in Longitudinal direction of the sealing air duct sections Have elongated holes and using fastening screws to the holding flanges are connected, the holding flanges and penetrating the elongated holes of the connecting flanges Fixing screws with a given Tightening torque are tightened.
- a screw for the Seal air duct sections realized that set is that the longitudinal mobility of the sealing air duct sections in the course of the compensation of thermal expansion is not hindered, nevertheless a perfect one Attachment of the sealing air duct sections in the duct housing is guaranteed.
- the sealing air duct sections are preferred for reasons made of L-shaped and Z-shaped sealing air duct halves forming a box-shaped channel cross section and put together two parallel connection flanges, the two connecting flanges with the elongated holes take the respective holding flange between them.
- This embodiment of the sealing air duct sections is of particular importance because also their screw fastening with sealing air is, also in the area of the fastening screws or the elongated holes in the connecting flanges and the penetrations in the retaining flange Gas leakage is prevented. Because otherwise it would for this purpose sealing air pressure on the double seal pressed onto the sealing air duct the butterfly valve only partially canceled and consequently reduced sealing effect to lead.
- the sealing effect in the area of the fastening screws is further increased by the fact that the fastening screws with washers covering the elongated holes are used.
- the invention also recommends that the outer cross section the inner tube sections the inner cross section the sealing air duct sections is adapted or corresponds, so that on the one hand for thermal expansion necessary movement play is given, on the other hand however, sealing effect is already achieved.
- this sealing effect is optimized in that the expansion joints of the sealing air duct sections metal foil tapes on the outside with dense contact predetermined width are bridged. Also these metal foil tapes allow longitudinal movement of the sealing air duct sections, although they are such nestle on the sealing air duct sections that Sealing effect against sealing air leakage is guaranteed.
- the metal foil strips are expediently in the area the connection and holding flanges using the fastening screws clamped.
- shut-off device for channels 1 with large cross sections, especially for exhaust gas and flue gas ducts in front of power plants.
- This shut-off device has in its basic Structure of a duct housing 2 with a flap stop trained all-round sealing air duct 3 with distributed over its circumference Air purge openings 4 on ( Figure 1).
- the application of the double seal 6 With sealing air gas should be transferred when in the closed position located butterfly valve 5 with security itself then prevent if the double seal 6 contrary to expectations not in all areas due to temperature Deformations perfectly against the Flap stop and consequently sealing air duct 3 are in contact should.
- the sealing air duct 3 is in sealing air duct sections 7 divided ( Figure 2).
- the sealing air duct sections 7 form between them expansion joints 6 and are in their Longitudinal predetermined and by arrows (figure 3) indicated movement play on the duct housing 2 connected.
- the expansion joints 6 are from inner tube sections inserted into the sealing air duct sections 7 9 bridged with sealing effect.
- the inner tube sections 9 are only on one of the two the relevant expansion joint 6 sealing air duct sections 7 attached so that the required Freedom of movement of the sealing air duct sections 7 in Area of expansion joints 8 is preserved.
- the sealing air duct 3 is used to form the sealing air duct sections 7 following the sealing air duct corners 10 divided under expansion joint formation.
- the sealing air duct corners 10 are fixedly connected to the duct housing 2.
- the sealing air duct sections 7 have angled Connection flanges 11 on ( Figures 5.5).
- the Connection flanges 11 have in the longitudinal direction Sealing air duct sections 7 extending elongated holes 12 ( Figure 3) and are by means of fastening screws 13 holding flanges 14 attached to duct housing 2 included, the holding flanges 14 and the elongated holes 12 of the connecting flanges 11 penetrating Fixing screws 13 with a predetermined Tightening torque are tightened to sufficient Attachment of the sealing air duct sections 7 whose Allow longitudinal mobility.
- connection and Retaining flanges 11, 14 are largely embedded.
- the fastening screws 13 are covering the slots 12 Washers 16 are used ( Figure 6) and are also pressurized with sealing air so that also in Area of the fastening screws 13 or the elongated holes 12 in the connecting flanges 11 and the penetrations no gas transfer takes place in the holding flange 14 can.
- the outer cross section of the inner tube sections 9 corresponds to the internal cross section of the sealing air duct sections 7. Furthermore, the expansion joints 6 of the Sealing air duct sections 7 on the outside with a dense system surrounding metal foil strips 17 ( Figures 3, 4, 5) bridged predetermined width.
- the metal foil tapes 17 nestle as it were and with a sealing effect on the outside against the sealing air duct sections 7 and are in the area of the connecting and holding flanges 11, 14 clamped by means of the fastening screws 13.
- the sealing air duct sections each made of L-shaped sealing air duct halves 16 and Z-shaped sealing air duct halves 19 (figures 5.6) to form a box-shaped channel cross-section and two parallel connecting flanges 11 composed.
- the two connecting flanges 11 take the respective holding flange 14 between them on. In this way, the mounting screws 13 or slots 12 in the connecting flanges 11 and penetrations in the holding flanges 14 acted on with sealing air, so that there is a gas transfer is avoided.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Duct Arrangements (AREA)
- Pipeline Systems (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Incineration Of Waste (AREA)
Description
- Fig. 1
- eine erfindungsgemäße Absperrvorrichtung in schematischer Frontansicht,
- Fig. 2
- den Gegenstand nach Fig. 1 in Ansicht X auf den Sperrluftkanal,
- Fig. 3
- einen vergrößerten Ausschnitt Y aus dem Gegenstand nach Fig. 2 im Bereich einer Sperrluftkanalecke,
- Fig. 4
- einen Schnitt A-A durch den Gegenstand nach Fig. 3.
- Fig 5
- einen Schnitt B-B durch den Gegenstand nach Fig. 3 mit angedeuteter Innenisolierung und
- Fig. 6
- einen Schnitt C-C durch den Gegenstand nach Fig. 3 mit ebenfalls angedeuteter Innenisolierung.
Claims (8)
- Absperrvorrichtung für Kanäle mit großen Querschnitten, insbesondere für Abgas- und Rauchgaskanäle von Kraftwerken, mit einem mit einer Innenisolierung versehenen Kanalgehäuse (2) mit einem als Klappenanschlag ausgebildeten umlaufenden Sperrluftkanal (3) mit über seinem Umfang verteilt angeordneten Sperrluft-Ausblasöffnungen (4) mit einer schwenkbar gelagerten Absperrklappe (5) und mit einer umlaufenden Doppeldichtung (6) zum Einblasen von Sperrluft bei in Klappenschließstellung gegen den Sperrluftkanal (3) angedrückter Doppeldichtung (6), wobei der Sperrluftkanal (3) in Sperrluftkanalabschnitte (7) unterteilt ist, die Sperrluftkanalabschnitte (7) Dehnungsfugen (8) zwischen sich bilden, die Sperrluftkanalabschnitte (7) mit in ihrer Längsrichtung vorgegebenen Bewegungsspiel über abgewinkelte Anschlußflansche (11) an das Kanalgehäuse (2) angeschlossen sind, die Dehnungsfugen (8) von in die Sperrluftkanalabschnitte (7) eingesetzten Elementen (9) mit Dichtwirkung überbrückt sind und die Elemente (9) jeweils an einem der beiden die jeweilige Dehnungsfuge (8) bildenden Sperrluftkanalabschnitten befestigt sind,
dadurch gekennzeichnet,
daß jeder Sperrluftkanalabschnitt (7) aus zwei Sperrluftkanalteilen (18, 19) zusammengesetzt ist, die jeweils einen Anschlußflansch (11) aufweisen, daß die Anschlußflansche (11) an am Kanalgehäuse (2) befestigte Halteflansche (14) mit Bewegungsspiel und unter Ausbildung eines geschlossenen Sperrluftkanalabschnitts (7) durch die beiden Sperrluftkanalteile (18 und 19) angeschlossen sind derart, daß die Anschluß- und Halteflansche (11, 14) weitgehend in die Innenisolierung (15) eingebettet sind, daß die Elemente (9) als Innenrohrabschnitte ausgebildet sind und daß die Doppeldichtung (6) als randseitig umlaufende Dichtung auf der Absperrklappe (5) angeordnet ist. - Absperrvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Sperrluftkanal (3) zur Bildung der Sperrluftkanalabschnitte (7) im Anschluß an die Sperrluftkanalecken (10) und/oder im mittleren Bereich seiner Längs- und Breitseiten unterteilt ist und die Sperrluftkanalecken (10) ortsfest mit dem Kanalgehäuse (2) verbunden sind.
- Absperrvorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Anschlußflansche (11) in Längsrichtung der Sperrluftkanalabschnitte (7) verlaufende Langlöcher (12) aufweisen und mittels Befestigungsschrauben (13) an die Halteflansche (14) angeschlossen sind, wobei die die Halteflansche (14) und die Langlöcher (12) der Anschlußflansche (11) durchdringenden Befestigungsschrauben (13) mit einem vorgegebenen Anzugsmoment angezogen sind. - Absperrvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Sperrluftkanalabschnitte (7) jeweils aus L-förmigen und Z-förmigen Sperrluftkanalhälften (18, 19) unter Bildung eines kastenförmigen Kanalquerschnitts und zwei paralleler Anschlußflansche (11) zusammengesetzt sind, und daß die beiden Anschlußflansche (11) den jeweiligen Halteflansch (14) zwischen sich aufnehmen.
- Absperrvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Befestigungsschrauben (13) mit die Langlöcher (12) abdeckenden Unterlegscheiben (16) eingesetzt sind.
- Absperrvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Außenquerschnitt der Innenrohrabschnitte (9) dem Innenquerschnitt der Sperrluftkanalabschnitte (7) angepaßt ist.
- Absperrvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Dehnungsfugen (8) von die Sperrluftkanalabschnitte (7) außenseitig mit dichter Anlage umgebenden Metallfolienbändern (17) vorgegebener Breite überbrückt sind.
- Absperrvorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Metallfolienbänder (17) im Bereich der Anschluß- und Halteflansche (11, 14) mittels der Befestigungsschrauben (13) eingespannt sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4313894A DE4313894C1 (de) | 1993-04-28 | 1993-04-28 | Absperrvorrichtung für Kanäle mit großen Querschnitten, insbesondere für Abgas- und Rauchgaskanäle von Kraftwerken |
DE4313894 | 1993-04-28 |
Publications (4)
Publication Number | Publication Date |
---|---|
EP0622588A2 EP0622588A2 (de) | 1994-11-02 |
EP0622588A3 EP0622588A3 (de) | 1995-04-05 |
EP0622588B1 EP0622588B1 (de) | 1996-08-14 |
EP0622588B2 true EP0622588B2 (de) | 2000-03-08 |
Family
ID=6486584
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94104821A Expired - Lifetime EP0622588B2 (de) | 1993-04-28 | 1994-03-26 | Absperrvorrichtung für Kanäle mit grossen Querschnitten, insbesondere für Abgas- und Rauchgaskanäle von Kraftwerken |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0622588B2 (de) |
AT (1) | ATE141400T1 (de) |
DE (1) | DE4313894C1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19608567C1 (de) * | 1996-03-06 | 1997-10-09 | Dampers Engineering Gmbh | Anordnung zum Sperren eines Gaskanals |
DE19627062C2 (de) * | 1996-07-05 | 2001-07-05 | Audi Ag | Verbindung zwieschen einem Kunststoffteil und einem metallischen Träger |
DE19906174C1 (de) * | 1999-02-05 | 2000-05-18 | Mannesmann Ag | Vorrichtung zur Abdichtung |
AT514432B1 (de) * | 2013-05-22 | 2015-01-15 | Compact Power Plant Products Gmbh | Gasweiche |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2607079A1 (de) * | 1975-03-17 | 1976-09-30 | Exxon Research Engineering Co | Ventil |
DE3208906A1 (de) * | 1982-03-12 | 1983-09-22 | Hermann Rappold & Co GmbH, 5160 Düren | Absperr- oder drosselarmatur mit einer aus einem biegeelastischen streifen gefertigten dichtung |
DE8232883U1 (de) * | 1982-11-24 | 1984-03-22 | Hermann Rappold & Co GmbH, 5160 Düren | Klappenventil mit einer dichtung aus biegeelastischen dichtstreifen |
DE8314781U1 (de) * | 1983-05-19 | 1985-08-29 | Stober + Morlock Wärmekraft GmbH, 4350 Recklinghausen | Klappenventil |
DE3815402A1 (de) * | 1988-05-05 | 1989-11-16 | Pks Engineering | Vorrichtung zur abdichtung |
DE4030611A1 (de) * | 1990-09-27 | 1992-04-02 | Mannesmann Ag | Absperrorgan |
-
1993
- 1993-04-28 DE DE4313894A patent/DE4313894C1/de not_active Expired - Lifetime
-
1994
- 1994-03-26 EP EP94104821A patent/EP0622588B2/de not_active Expired - Lifetime
- 1994-03-26 AT AT94104821T patent/ATE141400T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE4313894C1 (de) | 1994-08-18 |
EP0622588A3 (de) | 1995-04-05 |
EP0622588B1 (de) | 1996-08-14 |
ATE141400T1 (de) | 1996-08-15 |
EP0622588A2 (de) | 1994-11-02 |
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