EP0478100B1 - Absperrvorrichtung für eine Gasleitung - Google Patents

Absperrvorrichtung für eine Gasleitung Download PDF

Info

Publication number
EP0478100B1
EP0478100B1 EP91250253A EP91250253A EP0478100B1 EP 0478100 B1 EP0478100 B1 EP 0478100B1 EP 91250253 A EP91250253 A EP 91250253A EP 91250253 A EP91250253 A EP 91250253A EP 0478100 B1 EP0478100 B1 EP 0478100B1
Authority
EP
European Patent Office
Prior art keywords
shut
flap
sealing
hollow body
gas conduit
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
EP91250253A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0478100A2 (de
EP0478100A3 (en
Inventor
Hans-Jürgen Janich
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0478100A2 publication Critical patent/EP0478100A2/de
Publication of EP0478100A3 publication Critical patent/EP0478100A3/de
Application granted granted Critical
Publication of EP0478100B1 publication Critical patent/EP0478100B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/4238—With cleaner, lubrication added to fluid or liquid sealing at valve interface
    • Y10T137/4358—Liquid supplied at valve interface
    • Y10T137/4442—External pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8158—With indicator, register, recorder, alarm or inspection means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8158—With indicator, register, recorder, alarm or inspection means
    • Y10T137/8326—Fluid pressure responsive indicator, recorder or alarm
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87265—Dividing into parallel flow paths with recombining

Definitions

  • the invention relates to a shut-off device for a gas line, in particular with a large cross section, according to the preamble of claim 1.
  • a shut-off device for a gas line in particular with a large cross section, according to the preamble of claim 1.
  • Such a device is already known from document DE-A-3 813 663.
  • Shutoff devices of the type mentioned are known in practice in various embodiments.
  • shut-off devices were also approved by the responsible safety authorities, which in the gas flow direction had two butterfly valves arranged one behind the other, i.e. H. contain two shut-off levels one behind the other.
  • the space formed between the butterfly valves must be acted upon with a barrier medium, the pressure above the form, d. H. the pressure of the first butterfly valve - in the gas flow direction.
  • the invention is therefore based on the object to provide a shut-off device of the type required in the preamble of claim 1, which is characterized by its space-saving and relatively simple construction with reliable compliance with the necessary safety regulations.
  • the shut-off element in particular the pivotable shut-off valve, contains an additional cover which is arranged at a sufficiently large distance from the plate-shaped shut-off body in such a way that this cover together with the shut-off body form a closed space (hollow body) and thus one opposite the two spaces of the Gas line sealed gas-tight Chamber forms.
  • This ensures that a pressure prevails or is maintained within this closed chamber which deviates from the pressures which are present in the two spaces of the gas line (in front of and behind the butterfly valve).
  • a pressure monitoring device is connected to the closed chamber.
  • shut-off flap when using this shut-off device according to the invention in a shut-off device for gas lines, the pressure inside the gas-tightly sealed chamber of the shut-off device (shut-off flap) changes compared to a set target pressure, then damage to the additional cover or the plate-shaped shut-off body is indicated. A gas transfer or exit to or from the gas spaces of the associated gas line is not possible due to the construction according to the invention. This monitoring for the full functionality of the shut-off device is guaranteed both when the shut-off position and when the shut-off passage (shut-off flap) is open.
  • shut-off device for gas lines known from US 4,077,432, which has a so-called Venetian blind arrangement with respect to the shut-off devices.
  • This is a shut-off device with several shut-off flaps lying close together in one level in the shut-off position, each of which can be rotated about its central axis into the open position in such a way that the flat sides of the shut-off flaps lie approximately parallel to the axis of the gas line, i.e. in the direction of flow and only represent a relatively small flow obstacle.
  • US 4,077,432 provides for the introduction of sealing air through the axes of rotation of the individual louvre flaps designed as hollow shafts, for this to flow through the hollow louvre flaps and for the narrow end faces to exit through the passageways into the sealing air ducts, also in the area between the immediate ones a sealing air duct is formed in each case against mutually sealing louver flaps.
  • the embodiment according to the invention differs from this in particular in that it sets a very specific pressure in the closed chamber of the shut-off element and monitors whether this pressure changes, ie whether the chamber has a leak, which is always an indication of damage to the walls of this chamber represents.
  • the pressure monitoring device can advantageously be arranged on the outside of the gas line housing and in the line connection between the gas-tight chamber and an external pressure source for a shut-off medium, preferably a gaseous locking medium, the pressure monitoring device expediently via a flexible pressure medium line with the gas-tightly sealed chamber in the shut-off element connected is.
  • a shut-off medium preferably a gaseous locking medium
  • an underpressure or an overpressure of a predeterminable size can be introduced and maintained there in a suitably adapted manner via the monitoring device.
  • shut-off level in comparison to the known shut-off devices with two shut-off levels or shut-off devices located one behind the other, needs to be provided for each shut-off device, which on the one hand takes up little space and on the other hand makes it relatively simple overall construction, especially with regard to the entire associated shut-off device, leads.
  • shut-off device 1 and 2
  • this shut-off device being designed in the form of the particularly preferred pivotable shut-off valve and used in gas lines of relatively large dimensions.
  • two pivotable butterfly valves 1 and 2 viewed in the gas flow direction — are arranged next to one another in the housing 3 of an associated shut-off device in a gas line, the first butterfly valve 1 and the second butterfly valve 2 being of the same type can be executed and driven and can thus shut off or release half of the cross section of the housing 3.
  • the clear cross section of the housing 3 can correspond to an associated gas line, which is not illustrated in detail here. 1 shows the left, first butterfly valve 1 in its fully open position and the right, second butterfly valve in its completely closed position.
  • the butterfly valves 1, 2 lie sealingly against a housing 3 (on the inner walls) which is fixedly arranged within the housing 3 with a central web 35 and extends around the entire inner peripheral side of the housing 3 and with the entire peripheral edge region of each butterfly valve 1, 2 is in sealing engagement when the associated butterfly valve is closed. In this way, the spaces of the gas line located on different or opposite sides of the butterfly valves 1, 2 are separated from one another.
  • the flap actuation shaft 6 has a plurality of actuation arms 7 which are firmly connected to it and which engage on articulated connecting rods 11 on one side of the butterfly valve 2 or 1.
  • a suitable gear 8, which is part of the drive device 5, can be assigned to one end of each flap actuation shaft 6.
  • FIG. 1 shows that a shut-off device for gas lines of relatively large dimensions can be designed with single-leaf as well as with multi-leaf swing flaps (in the latter case then side by side), each wing of such a swing flap being formed by a swiveling shut-off flap.
  • shut-off device is the use in the form of a pivotable shut-off valve in a gas switch, as illustrated in FIG.
  • a pivotable shut-off valve in a gas switch, as illustrated in FIG.
  • only a single pivotable butterfly valve is used, which can be designed in the same way as the first butterfly valve according to Figure 1, so that it is also provided with the reference number 1.
  • the butterfly valve 1 is used to forward an incoming gas stream symbolized by arrow 19 either via a first branch connection 17 in the direction of arrow 21 or - as set in FIG. 2 - via a second branch connection 18 in the direction of arrow 20 .
  • the butterfly valve 1 can in turn be pressed tightly against the sealing seat 4 in the region of the second branch connection 18 or against the sealing seat 4 in the region of the first branch connection 17 by the flap actuating shaft 6 via actuating arms 7 and actuating link rods 11.
  • the rotary movement of the flap actuation shaft 6 in one direction or the other can in turn be carried out by the drive device 5 with the gear 8, the ends of the actuation shaft 6 being supported in shaft bearings 9 with bearing housings 10.
  • each of the shut-off valves forming a shut-off valve 1, 2 has a closed cavity or a closed chamber 13.
  • This chamber 13 results from the fact that each pivotable butterfly valve 1, 2 contains as a main part a plate-shaped shut-off body 14 and a preferably also plate-shaped additional cover 15, both of which are at a sufficiently large distance from one another and essentially parallel to one another to form a substantially flat, plate-shaped and sufficiently dimensionally stable component are firmly connected.
  • the plate-shaped shut-off body 14 and the additional cover 15 together form the chamber 13, which is sealed gas-tight with respect to the spaces of the gas line (in front of and behind each shut-off flap) the pressures prevailing in the two spaces in front of and behind each butterfly valve 1, 2 of the gas line deviate.
  • the chamber 13 is connected to a pressure monitoring device indicated at 16 in FIGS. 1 and 2.
  • the pressure monitoring device 16 is preferably arranged on the outside of the associated housing 3 (in FIG. 1) or 12 (in FIG. 2). It is also located in a line connection between the chamber 13 and a suitable, known (therefore not illustrated in more detail) pressure source for a barrier medium, the connection to the pressure source being indicated by a line section 22 that can be shut off, while the connection between the pressure monitoring device 16 and the gas-tight chamber 13 of each butterfly valve 1, 2 is essentially formed by a flexible pressure medium line 23 (see FIG. 1), so that the pivoting movement of the associated butterfly valve is not impaired by the connecting line to the pressure monitoring device 16.
  • FIGS. 3 to 7 some training options for the flap peripheral edge on the one hand and for the housing sealing seat and also for sealing elements arranged therebetween are explained below.
  • FIGS. 3 to 7 only one peripheral edge section is shown on the example of the closed butterfly valve 1 and the associated longitudinal section of the housing sealing seat 4 on an enlarged scale; the overall arrangement can be easily imagined if one considers the application examples of the butterfly valve 1, 2 in FIGS. 1 and 2 in a corresponding manner.
  • the butterfly valve 1 which can be pivoted in the direction of the arrow 24 (corresponding to the arrows 6a and 6b in FIG. 1), has a peripheral wall 25 which closes the gas-tight chamber 13 towards the peripheral edge of the valve and which has the plate-shaped shut-off body 14 and the likewise plate-shaped cover 15 connects to each other in the area of their peripheral edges, d. H. this peripheral wall 25 can be welded gas-tight to the peripheral edges of the shut-off body 14 and the cover 15.
  • the peripheral wall 25 - viewed in cross section - merely provides the inner leg of a cross-sectionally U-shaped circumferential groove, the outer leg of which forms an outer circumferential wall 27.
  • the circumferential trough 26 with its walls 25 and 27 protrudes from the plane of the additional cover 15 against the sealing seat 4, the side of the circumferential trough 26 pointing towards the sealing seat 4 being open.
  • rubber-elastic sealing strips are attached by means of clamping strips 29, which ensure sufficient sealing of the peripheral groove 26 forming the outer peripheral edge of the butterfly valve 1 with respect to the housing sealing seat 4 wear.
  • the walls of this circumferential channel 26 simultaneously delimit a barrier medium cavity 30 which is open towards the housing sealing seat 4 and which will be discussed again below.
  • the side 31a of the hollow body 31 which is opposite the peripheral wall region of the butterfly valve 1, in this case the peripheral groove 26, and which can also be referred to as a sealing seat surface, has either - over the length of the hollow body - as shown in Figure 3 - a number of appropriately distributed through openings 33 or one or more sufficiently large slots, which - as can be seen in Figure 3 - are each designed and arranged so that they are from the open side of the circumferential groove 26th delimiting sealing strips 28 are included, so that when the shut-off valve 1 lies sealingly against the sealing seat 4 in its shut-off position, an open connection between the interior of the hollow body 31 and the barrier medium subspace 30 of the circumferential groove 26 is established via the through openings 33.
  • the interior of the hollow body 31 is acted upon with a suitable barrier medium (preferably a gaseous barrier medium), then the flap peripheral edge region is also subjected to this barrier medium through the partial space 30 of the peripheral groove 26. In this way, an extremely reliable seal between the peripheral edge of the butterfly valve 1 and the housing sealing seat 4 is guaranteed.
  • a suitable barrier medium preferably a gaseous barrier medium
  • FIG. 4 shows an embodiment variant of the exemplary embodiment just explained with reference to FIG. Since this embodiment variant differs in the main only in the type of sealing elements and the circumferential groove adapted therein compared to FIG. 3, the same reference numerals can be chosen for the similar components, which means that these parts need not be explained again.
  • the U-shaped circumferential groove 26 ′ which essentially forms the outer peripheral edge region of the butterfly valve 1, is only slightly wider than the circumferential groove 26 in FIG. 3.
  • two spring steel strips 34 bent approximately in cross section which are fastened and clamped on the inner sides of the circumferential walls 25 and 27 In the shut-off position of the butterfly valve 1, place it tightly against the housing sealing seat 4 under elastic deformation.
  • FIG. 5 illustrates a further embodiment variant of the embodiment described with reference to FIG. 3, so that here again all parts of the same type can be provided with the same reference symbols.
  • the main difference of this embodiment variant compared to Fig. 3 and Fig. 4 can be seen in the fact that the seals 28 'on the barrier medium subspace 30 are designed in the form of keder seals.
  • a circumferential channel essentially forming the flap peripheral edge region with the barrier medium subspace 30 delimited by it - viewed in cross section - is oriented approximately at right angles to the gas-tight chamber 13 of the butterfly valve 1 and is open , there is also the possibility, in the manner illustrated in FIG. 6, of forming a circumferential channel 36 with a U-shaped cross section in an outward (toward the outer peripheral edge) extension of the gas-tight chamber 13 provided between the shut-off body 14 and the cover 15.
  • the transverse web of this U forms the circumferential wall 37 which closes the chamber 13 to the flap circumferential edge, while in a roughly straight extension of the cover 15 to the outside a circumferential wall part 38 as a longer U-leg and approximately in a straight line Extension of the shut-off body 14, a peripheral wall part 39 are formed as a shorter U-leg.
  • Each of these two peripheral wall parts 38, 39 carries on its free edge pointing towards the housing sealing seat a flat, circumferential, rubber-elastic sealing lip 40, which is assigned a cover strip 41 on one side (in each case on the upper side in FIG. 6).
  • the housing sealing seat 4 also contains a hollow body 42, which is connected to an external barrier medium pressure source via a pipe connection piece 43.
  • This hollow body 42 is delimited - apart from the outer housing wall - by a narrow circumferential wall 42a and a broad circumferential wall 42b, the clear distance between these two circumferential walls 42a, 42b being the clear distance between corresponds to the peripheral wall parts 38 and 39 of the peripheral groove 36.
  • the inward-facing free edge of the narrow circumferential wall 42a is also opposite the outward-pointing free edge of the sealing lip 40 on the longer circumferential wall part 38, while the inward-pointing free edge of the wider circumferential wall 42b of the hollow body 42 of the outwardly facing free edge of the sealing lip 40 bears against the shorter peripheral wall part 39 of the butterfly valve 1;
  • the cover strips 41 each abut a side surface of the associated peripheral wall 42a or 42b of the hollow body 42. In this way, the butterfly valve 1 can only be opened in the direction of arrow 44 and pivoted into the shut-off position (FIG. 6) in the opposite direction to arrow 44.
  • a barrier medium subspace 30 is again formed within the circumferential groove 36, which is open to the outside, that is to say in the direction of the hollow body 42, and is in open communication with the inside of this hollow body 42 when the Butterfly valve 1 is in its shut-off position.
  • the shut-off device is the shut-off valve 1
  • the gas-tight chamber 13 of which is essentially made up of the plate-shaped shut-off body 14 and the plate-shaped one additional cover 15 is formed.
  • the gas-tight chamber 13 towards the flap peripheral edge is formed by the web 45 of a circumferential steel profile 46, which is illustrated in FIG. 7 as a double-T profile, but also by another suitable steel profile, such as, for. B. U-profile can be formed.
  • the housing sealing seat 4 contains a hollow body 47, which in turn can be connected by a pipe connection piece 43 to an external barrier medium pressure source in order to be able to introduce barrier medium under pressure into the interior of the hollow body 47 in the manner explained.
  • the hollow body 47 can have an approximately U-shaped cross section and run in a channel shape over the inner peripheral region of the associated housing, its open channel side pointing towards the side facing it in the peripheral edge region of the butterfly valve 1, in particular its shutoff body 14.
  • the hollow body 47 has two walls 47a and 47b directed against the butterfly valve 1, each of which carries a suitable circumferential sealing element 48 on its free edges, which comes into sealing engagement with the opposite side of the butterfly valve 1 when the butterfly valve 1 is in its shut-off position located.
  • the two circumferential sealing elements 48 are formed by spring steel strips which are bent and clamped approximately in a U-shaped cross section, approximately the same as in the example in FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)
  • Pipeline Systems (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Pipe Accessories (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Magnetically Actuated Valves (AREA)
  • Safety Valves (AREA)
EP91250253A 1990-09-27 1991-09-18 Absperrvorrichtung für eine Gasleitung Expired - Lifetime EP0478100B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4030611A DE4030611A1 (de) 1990-09-27 1990-09-27 Absperrorgan
DE4030611 1990-09-27

Publications (3)

Publication Number Publication Date
EP0478100A2 EP0478100A2 (de) 1992-04-01
EP0478100A3 EP0478100A3 (en) 1992-07-22
EP0478100B1 true EP0478100B1 (de) 1994-05-25

Family

ID=6415117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91250253A Expired - Lifetime EP0478100B1 (de) 1990-09-27 1991-09-18 Absperrvorrichtung für eine Gasleitung

Country Status (6)

Country Link
US (1) US5159954A (es)
EP (1) EP0478100B1 (es)
AT (1) ATE106131T1 (es)
DE (2) DE4030611A1 (es)
DK (1) DK0478100T3 (es)
ES (1) ES2053275T3 (es)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9112541D0 (en) * 1991-06-11 1991-07-31 Grovag Grossventiltech Blades for isolators
DE4313894C1 (de) * 1993-04-28 1994-08-18 Stober & Morlock Absperrvorrichtung für Kanäle mit großen Querschnitten, insbesondere für Abgas- und Rauchgaskanäle von Kraftwerken
ES2067342T3 (es) * 1993-09-22 1995-03-16 Siemens Ag Procedimiento para la fabricacion de una instalacion de calefaccion y/o de aire acondicionado con una valvula de aire de chapaleta apoyada hermeticamente contra una pared de la caja, en especial para un automovil.
FI97825C (fi) * 1995-06-22 1997-02-25 Sammet Dekomte Oy Savu- ja ilmakanavissa käytettävä sulkupelti
DE19608567C1 (de) * 1996-03-06 1997-10-09 Dampers Engineering Gmbh Anordnung zum Sperren eines Gaskanals
DE19949370A1 (de) * 1999-10-13 2001-04-19 Janich Gmbh & Co Vorrichtung zur Abdichtung
FR2869086B1 (fr) * 2004-04-19 2006-08-18 Solios Environnement Sa Dispositif de deviation d'un flux gazeux par un registre drapeau a clapet unique
DE102006031887A1 (de) * 2006-07-07 2008-01-10 Nem Power-Systems, Niederlassung Deutschland Der Nem B.V. Niederlande Klappe zum Absperren und Regeln eines gasförmigen Mediums
DE102007016554A1 (de) * 2007-04-05 2008-10-09 Janich Gmbh & Co. Kg Absperrsystem für große Leitungsquerschnitte mit einer Schwenkklappe
CN101678735B (zh) * 2007-05-29 2011-11-23 汉拏空调株式会社 用于车辆空调器的门
DE102009020843A1 (de) * 2009-05-12 2010-11-25 Janich Gmbh & Co. Kg Absperrsystem mit einer Schwenkklappe für große Leistungsquerschnitte
US8127795B2 (en) * 2009-12-15 2012-03-06 Atco Structures & Logistics Ltd. Flue gas diverter damper seal land
US20140230919A1 (en) * 2013-02-19 2014-08-21 Robert Rhoads Valve seal for a diverter assembly
EP2952732B1 (en) * 2014-06-04 2019-01-02 Doleh, Zakaria Khalil Ibrahim Shutter valve and device for generating energy from sea waves comprising such valves

Family Cites Families (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US407732A (en) * 1889-07-23 Mold for casting sash-weights
DE1048451B (es) *
US1826941A (en) * 1926-04-02 1931-10-13 La Mont Corp Method and means for preventing leakage in valves
US1990309A (en) * 1932-04-18 1935-02-05 Pratt Co Henry Valve construction
US2430122A (en) * 1943-10-15 1947-11-04 Sun Oil Co Valve leakage indicator
US2603451A (en) * 1947-11-19 1952-07-15 Chalmers S Brown Flow control assembly for closed hydraulic conduits
US2691773A (en) * 1951-07-23 1954-10-12 Harold V Lichtenberger Valve leak detector
DE1771817U (de) * 1958-05-24 1958-08-07 Steinmueller Gmbh L & C Drehklappe fuer gaskanaele.
US3602165A (en) * 1969-11-10 1971-08-31 American Air Filter Co Damper assembly
US3749115A (en) * 1971-12-29 1973-07-31 Combustion Eng Damper apparatus with fluid seal
AT313010B (de) * 1972-02-04 1974-01-25 Unitherm Oesterreich Gmbh Absperrventil mit einer Einrichtung zur Anzeige eingetretener Undichtheiten
JPS5232630B2 (es) * 1973-01-24 1977-08-23
BR7505730A (pt) * 1974-09-12 1976-08-03 Panamera Ag Disco de valvula para uma valvula borboleta;valvula borboleta processo para centrar um anel de vedacao de uma valvula borboleta e processo para vedar uma valvula borboleta
DE2502240A1 (de) * 1975-01-21 1976-07-22 Steege & Janich Kg Absperrvorrichtung fuer rohrleitungen
US4077432A (en) * 1977-01-05 1978-03-07 Mosser Industries, Inc. Purged valve
USRE31471E (en) * 1977-05-18 1983-12-27 Damper Design, Inc. Multiple blade damper assembly
US4187878A (en) * 1977-12-23 1980-02-12 Zurn Industries, Inc. Valve having internally pressurized sealing elements
DE2918418C2 (de) * 1979-05-08 1983-11-03 Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel Stevenrohrabdichtung mit einer Radialdichtung
US4335738A (en) * 1979-06-19 1982-06-22 Nicholas Nassir Butterfly valve
GB2060824B (en) * 1979-10-12 1983-09-01 Grovag Grossventiltech Seals for gas isolators
SE8200487L (sv) * 1982-01-29 1983-07-30 Svenska Flaektfabriken Ab Franluftventil
FR2523258A1 (fr) * 1982-03-08 1983-09-16 Valeo Dispositif de retenue d'un volet monte a rotation dans une conduite, et boitier comprenant ce dispositif, pour une installation de climatisation de vehicule
US4638833A (en) * 1984-11-29 1987-01-27 Atlantic Richfield Company Choke valve
DE3504443A1 (de) * 1985-02-09 1986-08-14 PKS-Engineering GmbH & Co KG, 4720 Beckum Zwischenstueck fuer einen rauchgaskanal mit einer verschwenkbaren schliessklappe
DE3543508C1 (de) * 1985-12-10 1986-11-20 Wärmekraft Gesellschaft Stober + Morlock GbR, 4350 Recklinghausen Klappenventil
US4919169A (en) * 1987-05-29 1990-04-24 Lothar Bachmann Gas flow diverter
US4800919A (en) * 1987-06-18 1989-01-31 Lothar Bachmann Flap gate assembly
DE8802186U1 (de) * 1988-02-19 1988-04-28 zur Steege, geb. Hintze, Ellen, 4740 Oelde Absperrarmatur
DE3813663C2 (de) * 1988-04-22 1998-02-12 Mannesmann Ag Vorrichtung zum Absperren großer Heißgas-Rohrleitungen
DE3815402A1 (de) * 1988-05-05 1989-11-16 Pks Engineering Vorrichtung zur abdichtung
DE3815404C2 (de) * 1988-05-05 1996-07-18 Mannesmann Ag Schwenkklappenanordnung für Heißgas-Rohrleitungen
US4823836A (en) * 1988-05-31 1989-04-25 Lothar Bachmann Dampers with leaf spring seals
DE8817267U1 (de) * 1988-07-13 1996-04-11 Mannesmann AG, 40213 Düsseldorf Absperrvorrichtung für Rohrleitungen
DE8910185U1 (de) * 1989-08-25 1989-11-16 Hermann Rappold & Co GmbH, 5160 Düren Klappenventil für Rohrleitungen großer Nennweiten
US5000422A (en) * 1990-06-29 1991-03-19 Salem Industries, Inc. Incinerator valve

Also Published As

Publication number Publication date
ES2053275T3 (es) 1994-07-16
DE4030611A1 (de) 1992-04-02
EP0478100A2 (de) 1992-04-01
US5159954A (en) 1992-11-03
DK0478100T3 (da) 1994-07-11
EP0478100A3 (en) 1992-07-22
ATE106131T1 (de) 1994-06-15
DE59101714D1 (de) 1994-06-30

Similar Documents

Publication Publication Date Title
EP0478100B1 (de) Absperrvorrichtung für eine Gasleitung
DE4011274C1 (es)
EP0231302B1 (de) Absperrarmatur in form eines kugelhahnes
DE102010053411B4 (de) Vakuumventil
EP0968382B1 (de) Sitzreinigungsfähiges doppelsitzventil
EP0104504A1 (de) Dichtungsanordnung mit Doppelabstreifring
DE4004094A1 (de) Verschlussvorrichtung fuer eine rohrleitung zum transport von losen produkten
EP0299431A1 (de) Gasfeder, welche mit einem schwimmend angeordneten Dichtring mit Ventilfunktion ausgerüstet ist
EP0122323A1 (de) Doppelsitzventil mit zwei Ventiltellern
DE2212972C3 (de) Gehäusesitzdichtungsring
EP0705402B1 (de) Plattenschieber
DE2431281A1 (de) Absperrhahn
DE3424619A1 (de) Doppeljalousiedrossel
DE2736428A1 (de) Belueftete drosselventilvorrichtung
DE4213522A1 (de) Klappenachsenabdichtung
EP3994372B1 (de) Gasdruckfeder
EP0637365B1 (de) Absperrklappe mit einer verankerten abdichtungsmanschette
DE3120996A1 (de) Verschluss, insbesondere rueckstauverschluss fuer rohrleitungen
DE8802186U1 (de) Absperrarmatur
DE4313894C1 (de) Absperrvorrichtung für Kanäle mit großen Querschnitten, insbesondere für Abgas- und Rauchgaskanäle von Kraftwerken
DE19842603C2 (de) Sitzreinigungsfähiges Doppelsitzventil
DE2947372C2 (de) Zylinder-Kolben-Anordnung als Differenzdruckindikator
DE102010055430B4 (de) Klappenventil sowie Dichtung für ein Klappenventil
DE10155940A1 (de) Klappe zur Verwendung in Rauchgas- oder Luftkanälen
DE4110186C2 (es)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19920826

17Q First examination report despatched

Effective date: 19930708

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19940525

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19940525

Ref country code: BE

Effective date: 19940525

REF Corresponds to:

Ref document number: 106131

Country of ref document: AT

Date of ref document: 19940615

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59101714

Country of ref document: DE

Date of ref document: 19940630

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2053275

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed

Owner name: GUZZI E RAVIZZA S.R.L.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940811

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19940930

Ref country code: LI

Effective date: 19940930

Ref country code: CH

Effective date: 19940930

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19990817

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19990819

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 19990823

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19990824

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19990917

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19991018

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20000913

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000918

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000918

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000919

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010401

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010531

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20010401

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010601

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010918

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20010918

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20011011

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050918