EP0381863B1 - Adjustment device for the shut-off device of a regeneratively fired coke oven battery - Google Patents

Adjustment device for the shut-off device of a regeneratively fired coke oven battery Download PDF

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Publication number
EP0381863B1
EP0381863B1 EP19890124155 EP89124155A EP0381863B1 EP 0381863 B1 EP0381863 B1 EP 0381863B1 EP 19890124155 EP19890124155 EP 19890124155 EP 89124155 A EP89124155 A EP 89124155A EP 0381863 B1 EP0381863 B1 EP 0381863B1
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EP
European Patent Office
Prior art keywords
lever
spring
reversing
adjustment device
butterfly valve
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
Application number
EP19890124155
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German (de)
French (fr)
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EP0381863A3 (en
EP0381863A2 (en
Inventor
Michael Frenking
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.)
Still Otto GmbH
Original Assignee
Didier Ofu Engineering GmbH
Still Otto 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 Didier Ofu Engineering GmbH, Still Otto GmbH filed Critical Didier Ofu Engineering GmbH
Publication of EP0381863A2 publication Critical patent/EP0381863A2/en
Publication of EP0381863A3 publication Critical patent/EP0381863A3/en
Application granted granted Critical
Publication of EP0381863B1 publication Critical patent/EP0381863B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B21/00—Heating of coke ovens with combustible gases
    • C10B21/10—Regulating and controlling the combustion
    • C10B21/14—Devices for reversing the draught

Definitions

  • the invention relates to an adjusting device for shut-off devices in flow channels of a regeneratively heated coking furnace battery according to the preamble of patent claim 1.
  • Such an adjustment device for shut-off devices is described in connection with the sole channel housing in DE-PS 29 34 532.
  • one of two throttle valves with different opening cross-sections which can be pivoted about an axis, is moved.
  • These two throttle valves are moved alternately in front of the sole channels by a changeover device running over all the sole channel housings of the coking furnace battery by means of a crank arm, the frame edges of the flaps each sealingly abutting the front edges of the channel walls.
  • the cross-section is regulated by a different plate assignment of the flap frame depending on the required opening cross-section.
  • the invention has for its object to provide a device of the type mentioned, which basically avoids the above-mentioned impairments and enables individual cross-sectional regulation in the shut-off devices for a simple and safe changeover.
  • the sole channel housing 10 shown has four adjacent chambers 11, 12, 13, 14, of which, in the heating phase, two adjacent chambers 11 and 12 for the access of combustion air and the two other, also adjacent chambers 13 and 14 for the access of Lean gas are connected, while after the periodic changeover all four chambers 11 to 14 serve to discharge the exhaust gas from the regenerators.
  • each of the chambers 11 to 14 there is a throttle valve 15 which is adapted to the height and width of the chamber opening and which rotates with its shaft 16 vertically in the wall of the sole channel housing 10. While the lower end of the shaft 16 is seated only in a bearing shell 17 of the bottom wall of the housing 10, the upper end of the shaft 16 protrudes through a bush bearing 18 in the top wall of the housing 10 and is provided with a stop lever 19 above the housing 10.
  • This stop lever 19 is fixedly connected to the shaft 16 of the throttle valve 15 and projects with its free arm over a stop bar 20 fastened to the sole channel housing 10, which extends along the housing 10 over all four chambers 11 to 14.
  • This stop bar 20 contains in the region of each stop lever 19 a longitudinal slot 21 running in the pivoting direction of the stop lever 19, in which two screwable stops 22 are slidably arranged.
  • the shaft 16 of the throttle valve 15 continues to protrude above the sole channel housing 10 with its upper end piece beyond the stop lever 19 and is formed there together with the hub of the stop lever 19 to form a spring receiving piece 23.
  • a helical spring 24 with a sufficient spring constant for the automatic actuation of the throttle valve 19 sits on it as a spring-elastic intermediate member between the throttle valve and its changeover device.
  • One end of the helical spring 24 is anchored in the hub of the stop lever 19, while the other end of the helical spring 24 a changeover lever 25 is fixedly connected, which is only loosely rotatable with its hub on the free end of the spring receiving piece 23 of the throttle valve shaft 16.
  • the lever arm of the changeover lever 25 extends up to a pull rod 26 of the changeover device (not shown in the rest) and is articulated there in a known manner.
  • the mode of operation is as follows:
  • the stops 22 are used to limit the movement of the coking furnace battery for each coking furnace Throttle valves individually adjusted to the gas type and calorific value as well as the amount of combustion air and thus to the appropriate opening cross-sections.
  • the stop levers 19 and thus the throttle valves 15 can only be moved within these limits. Irrespective of this, the pull rods 26 always make the same longest possible and sometimes necessary path with each changeover, with which all the changeover levers 25 are pivoted uniformly in their largest possible angular range, in the example shown at an angle of 90 °.
  • the throttle valves 15 also pivot or rotate, each of which is connected to the changeover levers 25 via the spring-elastic intermediate member, that is to say the helical spring 24. The rotation of the throttle valves 15, however, takes place only within the set limit from one stop 22 to the other. A movement distance of the change-over lever 25 that goes beyond this limitation is absorbed by the coil springs 24.
  • the resilient intermediate member 24 can also be formed from another suitable spring. If, for example, a torsion spring is used, it expediently has a rectangular or square cross section. This spring can then, with the omission of the spring receiving piece 23 of the throttle valve shaft 16, be inserted directly into corresponding square holes in the two parts to be connected, ie with one end at the front end in the throttle valve shaft 16 or its stop lever 19 and with its other end in the changeover lever 25 be.
  • a torsion spring it expediently has a rectangular or square cross section. This spring can then, with the omission of the spring receiving piece 23 of the throttle valve shaft 16, be inserted directly into corresponding square holes in the two parts to be connected, ie with one end at the front end in the throttle valve shaft 16 or its stop lever 19 and with its other end in the changeover lever 25 be.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Mechanically-Actuated Valves (AREA)

Description

Die Erfindung bezieht sich auf eine Verstelleinrichtung für Absperrvorrichtungen in Durchflußkanälen einer regenerativ beheizten Verkokungsofenbatterie gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to an adjusting device for shut-off devices in flow channels of a regeneratively heated coking furnace battery according to the preamble of patent claim 1.

Eine derartige Verstelleinrichtung für Absperrvorrichtungen ist in Verbindung mit den Sohlkanalgehäusen in der DE-PS 29 34 532 beschrieben. Hierbei wird zur Einstellung der Öffnungsquerschnitte vor die Sohlkanäle jeweils eine von zwei um eine Achse schwenkbaren Drosselklappen mit unterschiedlichem Öffnungsquerschnitt bewegt. Diese zwei Drosselklappen werden von einer über sämtliche Sohlkanalgehäuse der Verkokungsofenbatterie verlaufenden Umstelleinrichtung mittels eines Kurbelarmes wechselweise vor die Sohlkanäle bewegt, wobei jeweils die Rahmenränder der Klappen abdichtend an den stirnseitigen Rändern der Kanalwandungen anliegen. Die Querschnittsregulierung erfolgt hierbei durch eine unterschiedliche Plattenbelegung der Klappenrahmen je nach erforderlichem Öffnungsquerschnitt. Hierbei ist, wenn z.B. eine wesentliche Änderung der Garungszeit notwendig ist, ein manuelles Umbelegen der Klappenrahmen innerhalb der Sohlkanäle erforderlich, was bei deren Enge und heißen Gehäusewandung oft unbequem ist. Auch ist das Umbelegen der Klappenrahmen oftmals während der Strömung von Abgas notwendig, was für die Bedienungspersonen und den Arbeitsablauf zu Beeinträchtigungen führen kann.Such an adjustment device for shut-off devices is described in connection with the sole channel housing in DE-PS 29 34 532. In order to adjust the opening cross-sections in front of the base channels, one of two throttle valves with different opening cross-sections, which can be pivoted about an axis, is moved. These two throttle valves are moved alternately in front of the sole channels by a changeover device running over all the sole channel housings of the coking furnace battery by means of a crank arm, the frame edges of the flaps each sealingly abutting the front edges of the channel walls. The cross-section is regulated by a different plate assignment of the flap frame depending on the required opening cross-section. If, for example, a significant change in the cooking time is necessary, manual reassignment of the Flap frames are required within the sole channels, which is often uncomfortable due to their tightness and hot housing walls. It is also often necessary to relocate the flap frames during the flow of exhaust gas, which can have an adverse effect on the operators and the workflow.

Der Erfindung liegt die Aufgabe zugrunde, eine Einrichtung der eingangs genannten Art zu schaffen, welche die vorbeschriebenen Beeinträchtigungen grundsätzlich vermeidet und eine individuelle Querschnittsregulierung in den Absperrvorrichtungen für eine einfache und sichere Umstellung ermöglicht.The invention has for its object to provide a device of the type mentioned, which basically avoids the above-mentioned impairments and enables individual cross-sectional regulation in the shut-off devices for a simple and safe changeover.

Die Aufgabe wird gemäß der Erfindung durch die Kennzeichnungsmerkmale des Patentanspruchs 1 gelöst. Hierdurch wird erreicht, daß die individuelle Einstellung der Drosselklappen für die jeweils erforderlichen Öffnungsquerschnitte der Absperrvorrichtungen bequem ohne Beeinträchtigung des Arbeitsablaufs und der Bedienungspersonen zu jeder Zeit, also auch während der Abgas-Strömung, außerhalb der Drosselklappengehäuse vorgenommen werden kann, die dann mit einfachem Gestängeschub gemeinsam und sicher umstellbar sind. Auch ermöglicht die erfindungsgemäße Einrichtung ein bequemes Nachverstellen der Dosierung, wenn sich infolge erheblicher Wärmedehnung in dem sich über die ganze Verkokungsofenbatterie erstreckenden Umstellgestänge Stellungsfehler einstellen.The object is achieved according to the invention by the characterizing features of patent claim 1. This ensures that the individual adjustment of the throttle valves for the required opening cross-sections of the shut-off devices can be carried out at any time, without affecting the workflow and the operators, i.e. also during the exhaust gas flow, outside the throttle valve housing, which can then be done together with a simple rod thrust and are easily convertible. The device according to the invention also enables a convenient readjustment of the dosage if position errors occur as a result of considerable thermal expansion in the changeover linkage which extends over the entire coking furnace battery.

Zu bevorzugende Weiterbildungen der Erfindung ergeben sich aus den Kennzeichnungsmerkmalen der Unteransprüche.Preferred developments of the invention result from the characterizing features of the subclaims.

Ein erfindungsgemäßes Ausführungsbeispiel einer Verstelleinrichtung ist nachstehend anhand eines Sohlkanalgehäuses beschrieben und in der Zeichnung dargestellt. Die Zeichnung zeigt in

  • Figur 1 einen Vertikalschnitt eines Sohlkanalgehäuses mit der Verstelleinrichtung und den wesentlichen Teilen der Umstelleinrichtung; und
  • Figur 2 eine Draufsicht auf die Verstelleinrichtung und das Sohlkanalgehäuse nach Figur 1.
An embodiment of an adjusting device according to the invention is described below with reference to a sole channel housing and shown in the drawing. The drawing shows in
  • Figure 1 is a vertical section of a sole channel housing with the adjusting device and the essential parts of the switching device; and
  • FIG. 2 shows a top view of the adjusting device and the sole channel housing according to FIG. 1.

Das dargestellte Sohlkanalgehäuse 10 weist vier nebeneinanderliegende Kammern 11, 12, 13, 14 auf, von denen in der Beheizungsphase zwei aneinander angrenzende Kammern 11 und 12 für den Zutritt von Verbrennungsluft und die zwei anderen, ebenfalls aneinander angrenzenden Kammern 13 und 14 für den Zutritt von Schwachgas angeschlossen sind, während nach der periodischen Umstellung alle vier Kammern 11 bis 14 dem Austritt des Abgases aus den Regeneratoren dienen.The sole channel housing 10 shown has four adjacent chambers 11, 12, 13, 14, of which, in the heating phase, two adjacent chambers 11 and 12 for the access of combustion air and the two other, also adjacent chambers 13 and 14 for the access of Lean gas are connected, while after the periodic changeover all four chambers 11 to 14 serve to discharge the exhaust gas from the regenerators.

In jeder der Kammern 11 bis 14 ist eine in Höhe und Breite der Kammeröffnung angepaßte Drosselklappe 15 angeordnet, die mit ihrer Welle 16 vertikal in der Wandung des Sohlkanalgehäuses 10 drehbar lagert. Während das untere Ende der Welle 16 nur in einer Lagerschale 17 der Bodenwandung des Gehäuses 10 aufsitzt, ragt das obere Ende der Welle 16 durch ein Buchsenlager 18 in der Deckenwandung des Gehäuses 10 hinaus und ist oberhalb des Gehäuses 10 mit einem Anschlaghebel 19 versehen.In each of the chambers 11 to 14 there is a throttle valve 15 which is adapted to the height and width of the chamber opening and which rotates with its shaft 16 vertically in the wall of the sole channel housing 10. While the lower end of the shaft 16 is seated only in a bearing shell 17 of the bottom wall of the housing 10, the upper end of the shaft 16 protrudes through a bush bearing 18 in the top wall of the housing 10 and is provided with a stop lever 19 above the housing 10.

Dieser Anschlaghebel 19 ist mit der Welle 16 der Drosselklappe 15 fest verbunden und ragt mit seinem freien Arm über eine am Sohlkanalgehäuse 10 befestigte Anschlagleiste 20, die sich längs des Gehäuses 10 über alle vier Kammern 11 bis 14 erstreckt. Diese Anschlagleiste 20 enthält im Bereich jedes Anschlaghebels 19 einen in Schwenkrichtung des Anschlaghebels 19 verlaufenden Längsschlitz 21, in dem zwei festschraubbare Anschläge 22 verschiebbar angeordnet sind.This stop lever 19 is fixedly connected to the shaft 16 of the throttle valve 15 and projects with its free arm over a stop bar 20 fastened to the sole channel housing 10, which extends along the housing 10 over all four chambers 11 to 14. This stop bar 20 contains in the region of each stop lever 19 a longitudinal slot 21 running in the pivoting direction of the stop lever 19, in which two screwable stops 22 are slidably arranged.

Die Welle 16 der Drosselklappe 15 ragt oberhalb des Sohlkanalgehäuses 10 weiterhin mit ihrem oberen Endstück über den Anschlaghebel 19 hinaus und ist dort gemeinsam mit der Nabe des Anschlaghebels 19 zu einem Federaufnahmestück 23 ausgebildet. Hierauf sitzt als ein federelastisches Zwischenglied zwischen der Drosselklappe und ihrer Umstelleinrichtung eine Schraubenfeder 24 mit einer ausreichenden Federkonstante für die selbstätige Betätigung der Drosselklappe 19. Das eine Ende der Schraubenfeder 24 ist in der Nabe des Anschlaghebels 19 verankert, während mit dem anderen Ende der Schraubenfeder 24 ein Umstellhebel 25 fest verbunden ist, der mit seiner Nabe nur lose drehbar auf dem freien Ende des Federaufnahmestückes 23 der Drosselklappen-Welle 16 aufgesetzt ist. Der Hebelarm des Umstellhebels 25 erstreckt sich bis zu einer Zugstange 26 der im übrigen nicht dargestellten Umstelleinrichtung und ist dort in bekannter Weise angelenkt.The shaft 16 of the throttle valve 15 continues to protrude above the sole channel housing 10 with its upper end piece beyond the stop lever 19 and is formed there together with the hub of the stop lever 19 to form a spring receiving piece 23. A helical spring 24 with a sufficient spring constant for the automatic actuation of the throttle valve 19 sits on it as a spring-elastic intermediate member between the throttle valve and its changeover device. One end of the helical spring 24 is anchored in the hub of the stop lever 19, while the other end of the helical spring 24 a changeover lever 25 is fixedly connected, which is only loosely rotatable with its hub on the free end of the spring receiving piece 23 of the throttle valve shaft 16. The lever arm of the changeover lever 25 extends up to a pull rod 26 of the changeover device (not shown in the rest) and is articulated there in a known manner.

Die Betriebsweise ist wie folgt:The mode of operation is as follows:

Anhand der Anschläge 22 werden für jeden Verkokungsofen der Verkokungsofenbatterie die Bewegungsbegrenzungen der Drosselklappen auf Gasart und Heizwert sowie Menge der Verbrennungsluft und damit auf die passenden Öffnungsquerschnitte individuell eingestellt. Nur innerhalb dieser Begrenzungen sind die Anschlaghebel 19 und damit die Drosselklappen 15 bewegbar. Unabhängig davon machen die Zugstangen 26 bei jeder Umstellung stets einen gleichen längstmöglichen und zum Teil erforderlichen Weg, mit dem sämtliche Umstellhebel 25 gleichmäßig in ihrem größtmöglichen Winkelbereich, im dargestellten Beispiel mit einem Winkel von 90°, verschwenkt werden. Dabei verschwenken bzw. drehen sich auch die Drosselklappen 15, die jeweils über das federelastische Zwischenglied, also die Schraubenfeder 24, mit den Umstellhebeln 25 verbunden sind. Die Drehung der Drosselklappen 15 erfolgt jedoch nur innerhalb der gesetzten Begrenzung von dem einen Anschlag 22 zum anderen. Eine über diese Begrenzung hinausgehende Bewegungsstrecke der Umstellhebel 25 wird von den Schraubenfedern 24 aufgefangen.The stops 22 are used to limit the movement of the coking furnace battery for each coking furnace Throttle valves individually adjusted to the gas type and calorific value as well as the amount of combustion air and thus to the appropriate opening cross-sections. The stop levers 19 and thus the throttle valves 15 can only be moved within these limits. Irrespective of this, the pull rods 26 always make the same longest possible and sometimes necessary path with each changeover, with which all the changeover levers 25 are pivoted uniformly in their largest possible angular range, in the example shown at an angle of 90 °. The throttle valves 15 also pivot or rotate, each of which is connected to the changeover levers 25 via the spring-elastic intermediate member, that is to say the helical spring 24. The rotation of the throttle valves 15, however, takes place only within the set limit from one stop 22 to the other. A movement distance of the change-over lever 25 that goes beyond this limitation is absorbed by the coil springs 24.

Es versteht sich, daß das federelastische Zwischenglied 24 auch aus einer anderen passenden Feder gebildet sein kann. Wird beispielsweise eine Dreh- bzw. Torsionsfeder verwendet, hat diese zweckmäßig einen rechteckigen oder quadratischen Querschnitt. Diese Feder kann dann unter Weglassung des Federaufnahmestückes 23 der Drosselklappen-Welle 16 direkt in entsprechende Vierkantlöcher der zwei zu verbindenden Teile, d.h. mit ihrem einen Ende stirnseitig in die Drosselklappen-Welle 16 bzw. deren Anschlaghebel 19 sowie mit ihrem anderen Ende im Umstellhebel 25 eingesetzt sein.It is understood that the resilient intermediate member 24 can also be formed from another suitable spring. If, for example, a torsion spring is used, it expediently has a rectangular or square cross section. This spring can then, with the omission of the spring receiving piece 23 of the throttle valve shaft 16, be inserted directly into corresponding square holes in the two parts to be connected, ie with one end at the front end in the throttle valve shaft 16 or its stop lever 19 and with its other end in the changeover lever 25 be.

Bezugszeichenliste:Reference symbol list:

  • 10 Sohlkanalgehäuse10 sole channel housing
  • 11 Kammer (Luft)11 chamber (air)
  • 12 Kammer (Luft)12 chamber (air)
  • 13 Kammer (Schwachgas)13 chamber (lean gas)
  • 14 Kammer (Schwachgas)14 chamber (lean gas)
  • 15 Drosselklappe15 throttle valve
  • 16 Welle (von 15)16 shaft (of 15)
  • 17 Lagerschale17 bearing shell
  • 18 Buchsenlager18 bush bearings
  • 19 Anschlaghebel19 stop lever
  • 20 Anschlagleiste20 stop bar
  • 21 Längsschlitze21 longitudinal slots
  • 22 Anschlag22 stop
  • 23 Federaufnahmestück (von 15/16)23 spring receiving piece (from 15/16)
  • 24 federelastisches Zwischenglied (Schraubenfeder)24 spring-elastic intermediate member (coil spring)
  • 25 Umstellhebel25 change-over lever
  • 26 Zugstange26 tie rod

Claims (5)

  1. Adjustment device for shut-off systems arranged in the passage ducts of a regeneratively fired coke oven battery with a common tie rod (26) of a reversing equipment for the opening cross sections of butterfly valves (15) opening and closing passage ducts (11 - 14), the reversing lever (25) of said butterfly valves being moved by the tie rod (26) between two extreme positions, characterized in that the butterfly valves (15) are each connected with the reversing levers (25) by means of a spring-type intermediate element (24) and are equipped with a permanently fixed limiting lever (19) mounted on the valve shaft (16), said limiting lever being slewable outside of the butterfly valve body (10) between two adjustable stop elements (22).
  2. Adjustment device according to Claim 1, characterized in that the butterfly valves (15) as well as their reversing lever (25) are slewable through an angular area which is as large as possible, for example of 90 °, and the stops (22) are optionally adjustable within this area.
  3. Adjustment device according to Claims 1 or 2 characterized in that the butterfly valve shafts (16) extend beyond the limiting lever (19) permanently fixed to the butterfly valve (15) and are designed to form a spring-receiving element (23) on which the spring-type intermediate element, for instance a helical sprig (24), is arranged, of which one end is permanently attached to the butterfly valve shaft (16) and its limiting lever (19) while the other end is permanently fixed to the reversing lever (25), said reversing lever (25) being rotatably, loosely mounted on the free end of the spring receiving element (23) of the butterfly valve shaft (16).
  4. Adjustment device according to one of the Claims 1 to 3 characterized in that a torsion spring serves as spring-type intermediate element (24) which extends the butterfly valve shaft (16) in a torsionally elastic manner by being permanently inserted at one end into the front end of butterfly valve shaft (16) and its limiting lever (19) and on the other end in the reversing lever (25).
  5. Adjustment device according to one of the Claims 1 to 4 characterized in that the stops (22) are movably and fixably arranged as desired in longitudinal slots (21) provided in a rigid strip-type stop element (20) arranged parallel with the reversing rod (26).
EP19890124155 1989-02-06 1989-12-29 Adjustment device for the shut-off device of a regeneratively fired coke oven battery Expired - Lifetime EP0381863B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893903470 DE3903470C1 (en) 1989-02-06 1989-02-06
DE3903470 1989-02-06

Publications (3)

Publication Number Publication Date
EP0381863A2 EP0381863A2 (en) 1990-08-16
EP0381863A3 EP0381863A3 (en) 1990-12-19
EP0381863B1 true EP0381863B1 (en) 1992-09-09

Family

ID=6373518

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890124155 Expired - Lifetime EP0381863B1 (en) 1989-02-06 1989-12-29 Adjustment device for the shut-off device of a regeneratively fired coke oven battery

Country Status (3)

Country Link
EP (1) EP0381863B1 (en)
DE (1) DE3903470C1 (en)
ES (1) ES2035512T3 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7613370U1 (en) * 1976-04-28 1976-10-21 Didier Engineering Gmbh, 4300 Essen CONVERSION DEVICE FOR DOSING FRAME OF BASE CHANNELS OF A COKE OVEN
DE2820208C2 (en) * 1978-05-09 1985-10-03 Gert-Helmut Ing.(grad.) 3203 Sarstedt Gruber Shut-off device, in particular pressure relief louvre
DE2828323A1 (en) * 1978-06-28 1980-01-10 Ras Rohrleitungs Apparate Und Flue gas flap actuating mechanism - has thermal expansion compensated frame to mount shafts with rotatable hubs carrying actuator brackets
DE2934532C1 (en) * 1979-08-27 1982-02-18 Didier Engineering Gmbh, 4300 Essen Sole channel housing of a coke oven

Also Published As

Publication number Publication date
EP0381863A3 (en) 1990-12-19
EP0381863A2 (en) 1990-08-16
DE3903470C1 (en) 1990-03-29
ES2035512T3 (en) 1993-04-16

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