DE19501754A1 - Double block and bleed valve for fluid mixt. prevention - Google Patents

Double block and bleed valve for fluid mixt. prevention

Info

Publication number
DE19501754A1
DE19501754A1 DE1995101754 DE19501754A DE19501754A1 DE 19501754 A1 DE19501754 A1 DE 19501754A1 DE 1995101754 DE1995101754 DE 1995101754 DE 19501754 A DE19501754 A DE 19501754A DE 19501754 A1 DE19501754 A1 DE 19501754A1
Authority
DE
Germany
Prior art keywords
valve
valves
double block
closed
dbb
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.)
Ceased
Application number
DE1995101754
Other languages
German (de)
Inventor
Eberhard Raquette
Andreas Eckert
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.)
Roquette Eberhard Dipl-Ing 79725 Laufenburg De
Original Assignee
Roquette Eberhard Dipl-Ing 79725 Laufenburg De
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 Roquette Eberhard Dipl-Ing 79725 Laufenburg De filed Critical Roquette Eberhard Dipl-Ing 79725 Laufenburg De
Priority to DE1995101754 priority Critical patent/DE19501754A1/en
Publication of DE19501754A1 publication Critical patent/DE19501754A1/en
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/048—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with valve seats positioned between movable valve members

Abstract

The valve serves for two media supply to machines and installations without mixing together. Two feed valves are located in the coupled pipelines and a relief third valve is incorporated in the intermediate space, open with the two feed valve closed, and vice versa. The insertion of a double block and bleed (DBB) valve realises controlled discharge of leakages into atmos. The DBB valve has three valve seats on a disc piston, and only one drive is used for the valve positioning, as well as a simple monitor for the end position. Switching of three connecting unions serves for the valve operation.

Description

Besonderheiten der ErfindungSpecial features of the invention

Das Ventil ist bei Ausfall der Energie geschlossen (fail-safe) und entlüftet den Zwischenraum oder kann auch als "fail-open" ausgeführt werden. Für das Ventil wird nur ein Antrieb benötigt.If the energy fails, the valve is closed (fail-safe) and vented the gap or can also be designed as "fail-open". Only one drive is required for the valve.

Für das Ventil wird nur eine Endlagenüberwachung benötigt.Only end position monitoring is required for the valve.

Vorteile der PatentanwendungAdvantages of patent application

Vereinfachte Kompaktkonstruktion mit Verbesserung der SicherheitseigenschaftenSimplified compact design with improvement of Security features

  • - nur ein Antrieb mit Endschalter anstatt drei Stück- only one drive with limit switch instead of three
  • - (durch doppelte Abdichtung und Entlüftung des Zwischenraumes resultiert eine Sicherheitsverbesserung)- (by double sealing and ventilation of the space results in a security improvement)
  • - leichte Nachrüstung und Umrüstung durch weniger Anschlüsse- Easy retrofitting and conversion due to fewer connections
  • - Raumeinsparung- space saving
  • - geringere elektrischer Verdrahtungs- und Logikaufwand- less electrical wiring and logic

Aus dem amerikanischen ist die Ventilanordnung "Double bloc and bleed" bekannt.The American valve arrangement is "Double bloc and bleed" known.

Hierbei werden drei Ventile dafür eingesetzt, zwei unterschiedliche Medien, die in einen Apparat oder Behälter einströmen, sicher abzutrennen.Here three valves are used, two different ones Media that flows into an apparatus or container is safe cut off.

Dieser Einsatz findet in der Maschinenbauindustrie und im Anlagenbau Anwendung.This is used in the mechanical engineering industry and in plant engineering Application.

Durch das Druckgefälle der Medien über den entlüfteten Zwischenraum zur Atmosphäre ist sichergestellt, daß bei einer Undichtigkeit beider in Reihe geschalteter Ventile die Medien immer zur Atmosphäre geleitet werden.Due to the pressure drop of the media across the vented space to the atmosphere ensures that in the event of a leak in both Series of switched valves always direct the media to the atmosphere will.

Eine unkontrollierte Vermischung ist somit in jedem Fall ausgeschlossen.An uncontrolled mixing is impossible in any case.

Undichtigkeiten der einzelnen Ventile haben solche aufwendigen 3-Ventil- Techniken gefordert. Dies stellt für diese Aufgabe einen entsprechenden hohen Aufwand mit drei Antrieben und drei Endschaltern dar.Leaks in the individual valves have such elaborate 3-valve Techniques required. This provides an appropriate one for this task high effort with three drives and three limit switches.

Das vorgestellte Sonderventil beinhaltet drei Ventile in einem Körper. Es handelt sich um ein Sitzventil, wobei drei Ventilsitze an einem Schiebekolben realisiert sind. Somit benötigt man nur einen Antrieb, und die Ventilsitze sind alle durch den Mediendruck selbstdichtend. Durch die Konstruktion ist im Antriebsausfall der Mediendurchgang geschlossen und die Entlüftung geöffnet.The special valve presented contains three valves in one body. It is a poppet valve, with three valve seats on one Sliding pistons are realized. So you only need one drive, and the valve seats are all self-sealing due to the media pressure. Due to the construction, there is media passage in the event of a drive failure closed and the vent opened.

Durch den Einsatz des vorgeschlagenen neuen Ventils reduziert sich der Aufwand und die Sicherheit wird verbessert.The use of the proposed new valve reduces the Effort and security are improved.

Das Ventil hat somit drei Anschlüsse: A, B und C. (siehe beiliegende Zeichnung 0-000 001 A).The valve thus has three connections: A, B and C. (see attached drawing 0-000 001 A).

Das Medium wird über A eingespeist und über B zur Entnahme weitergegeben. Der Ausgang C dient der Sicherheitsentlüftung. Im geschlossenen Zustand steht der Kanal A unter Druck und C ist geöffnet. Da C zur Atmosphäre offen ist, preßt der Mediumsdruck in A den Ventilsitz A fest auf den Sitz. Undichtigkeiten vom Ventilsitz A würden automatisch in die Atmosphäre abgeleitet.The medium is fed in via A and via B for removal passed on. Output C is used for safety ventilation. When closed, channel A is under pressure and C is open. Since C is open to the atmosphere, the medium pressure in A presses the Valve seat A firmly on the seat. Leaks from valve seat A would automatically derived into the atmosphere.

Während Ventilsitz A geschlossen ist, ist auch der Ventilsitz B geschlossen. Somit können Undichtigkeiten niemals in geschlossenem Zustand von A nach B fließen. While valve seat A is closed, valve seat B is also closed closed. Thus, leaks can never be closed Flow state from A to B.  

Der Ventilsitz B verstärkt seine Dichtwirkung mit zunehmendem Gegendruck über den Kanal B. Sollte also einmal in die Gegenrichtung ein Druck auf das System einwirken, so erhöht sich proportional die Dichtkraft.The valve seat B increases its sealing effect with increasing Back pressure via channel B. So should be in the opposite direction pressure on the system increases proportionally Sealing force.

Wenn die Ventilsitze A und B geschlossen sind, ist der Ventilsitz C immer offen. Somit ist gewährleistet, daß der Zwischenraum immer entlüftet ist.When valve seats A and B are closed, valve seat C is always open. This ensures that the space is always vented.

Wenn das Ventil offen ist, also die Ventilsitze A und B offen sind, ist der Ventilsitz C geschlossen. Durch das Druckgefälle von der Speiseleitung A über den Sitz C zur Atmosphäre ist auch dieser Ventilsitz selbstdichtend.If the valve is open, i.e. valve seats A and B are open, that is Valve seat C closed. Due to the pressure drop from the feed line A This valve seat is also self-sealing via seat C to the atmosphere.

Das Ventil wird für den Hochdruck ausgelegt und wird ausreichend freie Querschnitte bereitstellen für einen Volumenstrom von 5-50 Bm³/h Gas.The valve is designed for high pressure and is sufficiently free Provide cross sections for a volume flow of 5-50 Bm³ / h gas.

Claims (4)

Im Anlagen- und Maschinenbau werden zwei Medien einer Maschine zugeführt. Eine Vermischung muß aber ausgeschlossen werden. Somit werden in der verbindenden Rohrleitung zwei Ventile (Einströmventile) in Reihe gesetzt und der Zwischenraum durch ein drittes Ventil (Entlastungsventil) entlüftet.In plant and machine construction, two media become one machine fed. Mixing must be excluded. Consequently are two valves (inflow valves) in the connecting pipeline Row set and the space through a third valve (Relief valve) vented. Im geschlossenen Zustand der beiden Einströmventile ist das Entlastungsventil immer geöffnet oder umgekehrt.When the two inflow valves are closed, this is Relief valve always open or vice versa. Weiterhin kann eine Dichtungsaufgabe durch ein Ventil (Slurrydurchtritt und Gasdichtigkeit) auf Dauer nicht bewältigt werden, welches Sicherheitsfunktionen benötigt. Hier würde der Einsatz eines "Doppel Block and Bleed" Ventils ein kontrolliertes Abführen der Undichtigkeiten in die Atmosphäre realisieren.Furthermore, a sealing task can be carried out through a valve (slurry passage and gas tightness) cannot be managed in the long run, which Security functions needed. Here the use of a "double Block and Bleed "valves for controlled drainage of leaks realize the atmosphere. Das DBB-HP-Ventil ist dadurch gekennzeichnet,
  • - daß es drei Ventilsitze auf einem Schiebekolben hat
  • - daß nur ein Antrieb für die Ventilstellung benötigt wird
  • - daß nur eine Endlagenüberwachung benötigt wird
  • - daß das Ventil bedient mit einer Schaltstellung drei Anschlüsse.
The DBB-HP valve is characterized by
  • - That it has three valve seats on a sliding piston
  • - That only one drive is required for the valve position
  • - That only end position monitoring is required
  • - That the valve operates three connections with one switch position.
DE1995101754 1995-01-21 1995-01-21 Double block and bleed valve for fluid mixt. prevention Ceased DE19501754A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1995101754 DE19501754A1 (en) 1995-01-21 1995-01-21 Double block and bleed valve for fluid mixt. prevention

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1995101754 DE19501754A1 (en) 1995-01-21 1995-01-21 Double block and bleed valve for fluid mixt. prevention

Publications (1)

Publication Number Publication Date
DE19501754A1 true DE19501754A1 (en) 1996-09-05

Family

ID=7751992

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1995101754 Ceased DE19501754A1 (en) 1995-01-21 1995-01-21 Double block and bleed valve for fluid mixt. prevention

Country Status (1)

Country Link
DE (1) DE19501754A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130055715A1 (en) * 2011-06-17 2013-03-07 Hermann Engesser Method for operating a fuel supply for a heat engine
CN105526377A (en) * 2016-02-18 2016-04-27 西诺威阀门控制（苏州）有限公司 DBB valve set structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1028841B (en) * 1955-05-07 1958-04-24 Erich Herion Multi-way switch valve with special pressure relief
DE1051590B (en) * 1956-10-02 1959-02-26 Enfo Grundlagen Forschungs Ag Pressure-dependent switching three-way valve in gas-tight design
DE1157865B (en) * 1953-08-08 1963-11-21 Erich Herion Multi-way valve with several valve seats on the same axis
DE1252027B (en) * 1967-10-12
DE3505299A1 (en) * 1984-02-22 1985-09-05 Ross Operating Valve Co., Detroit, Mich. MULTI-WAY PLATE VALVE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1252027B (en) * 1967-10-12
DE1157865B (en) * 1953-08-08 1963-11-21 Erich Herion Multi-way valve with several valve seats on the same axis
DE1028841B (en) * 1955-05-07 1958-04-24 Erich Herion Multi-way switch valve with special pressure relief
DE1051590B (en) * 1956-10-02 1959-02-26 Enfo Grundlagen Forschungs Ag Pressure-dependent switching three-way valve in gas-tight design
DE3505299A1 (en) * 1984-02-22 1985-09-05 Ross Operating Valve Co., Detroit, Mich. MULTI-WAY PLATE VALVE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130055715A1 (en) * 2011-06-17 2013-03-07 Hermann Engesser Method for operating a fuel supply for a heat engine
US8813470B2 (en) * 2011-06-17 2014-08-26 Alstom Technology Ltd. Method for operating a fuel supply for a heat engine
CN105526377A (en) * 2016-02-18 2016-04-27 西诺威阀门控制（苏州）有限公司 DBB valve set structure

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