EP2279048B1 - Device and method for aseptic pressure relief - Google Patents

Device and method for aseptic pressure relief Download PDF

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Publication number
EP2279048B1
EP2279048B1 EP20090729440 EP09729440A EP2279048B1 EP 2279048 B1 EP2279048 B1 EP 2279048B1 EP 20090729440 EP20090729440 EP 20090729440 EP 09729440 A EP09729440 A EP 09729440A EP 2279048 B1 EP2279048 B1 EP 2279048B1
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EP
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Prior art keywords
valve
safety
valve device
safety valve
pipeline
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EP20090729440
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German (de)
French (fr)
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EP2279048A1 (en
Inventor
Holger Grossmann
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KHS GmbH
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KHS GmbH
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Priority to PL09729440T priority Critical patent/PL2279048T3/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • 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
    • Y10T137/0318—Processes
    • Y10T137/0396—Involving pressure control
    • 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
    • Y10T137/4245—Cleaning or steam sterilizing
    • Y10T137/4259—With separate material addition
    • 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
    • Y10T137/4245—Cleaning or steam sterilizing
    • Y10T137/4266—Steam sterilizing
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7838—Plural
    • 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
    • Y10T137/877—With flow control means for branched passages

Definitions

  • the invention relates to a valve device according to the preamble of claim 1 and a method according to the preamble of claim 11.
  • the use of a rupture disk which is coupled to a downstream safety valve, is known.
  • the rupture disc is more or less level with the tubing and is treated unilaterally during regular cleaning and sterilization routines. This solution makes it possible to end the process in a controlled manner in the event of a rupture of the rupture disk.
  • the use of rupture discs are the cost of loss of a rupture disc and the subsequent work and cleaning effort when a rupture disc must be replaced.
  • a process valve for use in food technology ( DE 203 17 882 U1 ) to control liquid to viscous products such as tomato ketchup or yogurt under sterile conditions in a conveyor system.
  • the process valve has two valves which can be actuated by actuators, which are each connected on the input side to a pipeline of a pipeline network and communicate with one another via a barrier chamber, which can be flowed through by a blocking medium under the control of control valves.
  • this known process valve is neither intended nor suitable as an overpressure safety device.
  • a dispensing system ( DE199 22 084 A1 ) with a degermination device, heating device, blow-out device, radiation device, drying device, liquid or gas flushing direction.
  • a controller valves are provided for cleaning, sterilizing, etc.
  • the object of the invention is therefore to disclose a device which overcomes the disadvantages mentioned above.
  • a pipe network overpressure safety device (1) comprising a supply line leading from the pipeline network to be secured to the overpressure safety device (1), having at least one safety valve and one drainage line.
  • at least two safety valves (2) (3) are provided, and both safety valves have an inlet side and an outlet side, wherein the first safety valve (2) is connected to a line of the pipeline network, and the first to the second safety valve (2). 3) is connected via a connecting pipe (4).
  • the dacarinsing, cleaning and / or Sterbes michsstoff is supplied and derivable.
  • the first safety valve (2) is designed or adjusted to withstand a higher limit pressure than the safety valve (3).
  • This design allows the opening of the first safety valve not to lead to sterility, but the process must not be interrupted following a pressure shock or a pressure peak.
  • the pipe interior of the connecting pipe can be acted upon after such an event and regularly with a suitable sterilizing agent, such as steam, ozone, H 2 O 2 or peracetic acid.
  • a suitable sterilizing agent such as steam, ozone, H 2 O 2 or peracetic acid.
  • limiting pressure is meant here the pressure level at which the respective safety valve opens.
  • the load capacity of the safety valves is such that the limit pressure of the second safety valve (3) is 50% below the limit pressure of the first safety valve (2) or even smaller. It should be noted that the pressure of the sterilizing medium, which is passed through the connecting pipe, is below the limit pressure of the second safety valve.
  • the flow guidance in the connecting pipeline (4) can be problematic, in particular in the use of liquid sterilizing agents, so that in an improved variant the supply of the sterilizing agent leads directly into the outlet side of the first safety valve (2) and the discharge directly to the inlet side of the second safety valve (FIG. 3) is connected. This ensures that a defined flow in the connecting pipe (4) takes place.
  • This variant can be further improved by aligning the end of the supply line in the outlet side or in the connecting pipe such that its outlet is directed to the valve seat of the first safety valve (2). This ensures the fastest possible and highly effective sterilization of the valve seat.
  • the end of the supply line should be a maximum of 20 mm away from the valve seat of the first safety valve (2).
  • a further improvement consists in that several supply lines lead into the connecting pipe (4) or that at least one outlet of the supply line is directed onto both valve seats, the valve seat of the first and the second safety valve.
  • a condensate separator should be arranged in the discharge and the connecting pipe (4) should be arranged or shaped in such a way that condensate can flow freely.
  • the invention further comprises a method for overpressure protection of pipeline networks, which comprises an embodiment of the abovementioned devices.
  • FIG. 1 1 schematically shows the overpressure safety device 1, comprising the two safety valves 2 and 3.
  • the first safety valve 2, with a limiting pressure of 5.5 bar and the second safety valve 3 with a limit pressure of 2.0 bar, are connected via the connecting pipe 4.
  • the safety valve 2 is connected via a pipe socket 5 with the pipe 6, which is part of the monitored pipeline network (not shown).
  • To the connecting pipe 4 leads a supply line 7, in the conduction path of a controlled valve 8 and a check valve 9 is arranged.
  • the arrow indicates the flow direction of the sterilization medium.
  • overpressure protection device 1 is ideally applied with steam.
  • the vapor forms an active sterile barrier. If necessary, it is possible to sterilize the gap continuously.
  • the particular advantage is that even with a defect of the bellows on the valve stem no contamination into the piping system can take place inside.
  • FIG. 2 also schematically shows the overpressure protection device 1, which is particularly suitable for the use of a liquid sterilization medium.
  • the supply line 7 branches in the connecting pipe into a left and a right branch.
  • the right branch leads into the outlet side 12 of the first safety valve 2 and the outlet 13 of the right branch of the supply line 7 is directed directly onto the valve seat 14.
  • the left branch of the supply line 7 leads into the inlet side 15 of the second safety valve 3 and the outlet 16 is directly opposite the valve seat 17 and is directed onto this.
  • an extension is provided in the region of the flange 18 so that residual liquid or condensate can collect and drain there.
  • the derivative 10 is arranged. This arrangement certainly an ideal flow guidance in the connecting pipe 4.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

A pressure relief device for pipeline networks includes first and second safety valves, each having an inlet side and an outlet side. The first safety valve is connected to a line of the pipeline network by its outlet side. A connecting pipeline extends between the two safety valves and connects the inlet side of the second valve to the outlet side of the first. A supply line carries a working fluid to the connecting pipeline, a supply-line safety valve for the supply line, and a discharge line connected to the connecting pipeline for removing working fluid carried to the connecting pipeline by the supply line.

Description

Die Erfindung betrifft eine Ventilvorrichtung gemäß Oberbegriff Patentanspruch 1 sowie ein Verfahren gemäß Oberbegriff Patentanspruch 11.The invention relates to a valve device according to the preamble of claim 1 and a method according to the preamble of claim 11.

Bei Füllern für sterile Produkte, insbesondere wenn hohe behördliche Zulassungen angestrebt werden, wie beispielsweise eine FDA-Zulassung, sind übliche Sicherheitsventile nicht ausreichend. Üblich Sicherheitsventile weisen in der Regel einen Faderbelasteten Ventilkörper auf, der bei einem gewissen Grenzdruck automatisch öffnet. Derartige Sicherheitsventile sind bekannt und in der Patentliteratur vielfach beschrieben. Beispielhaft seinen hier genannt EP 0 022 941 A1 , EP 0 051 082 A1 , DE 37 42 722 A1 und DE 196 07 840 C1 .For fillers for sterile products, especially when high regulatory approvals are desired, such as FDA approval, common safety valves are not sufficient. Conventional safety valves usually have a fader-loaded valve body, which automatically opens at a certain limit pressure. Such safety valves are known and described many times in the patent literature. Exemplarily named here EP 0 022 941 A1 . EP 0 051 082 A1 . DE 37 42 722 A1 and DE 196 07 840 C1 ,

In steril zu haltenden Rohrleitungssystemen besteht bei Druckstößen die Gefahr, dass das Ventil kurz zur unsterilen Abblasleitung öffnet und einer Rekontamination erfolgt. Bei der Anwendung in Füllprozessen für Lebensmittel, insbesondere bei Getränken, wird die Gefahr einer Rekontamination dadurch vermindert, dass das Gehäuse des Sicherheltsventils ständig mit Dampf, allerdings drucklos, durchströmt wird. Diese Verfahrenswelse führt zu einer permanenten lokalen Erwärmung des Rohrleitungsnetzes, was durch die Wärmeleitung innerhalb der metallischen Rohrleitungswerkstoffe in entfernteren Regionen zu einer einfachen Temperaturerhöhung führt, ohne Sterilisierungseffekt. Eine derartige leichte Temperaturerhöhung beschleunigt wiederum das Keimwachstum. Weiterhin ist diese Lösung energetisch problematisch.In sterile piping systems in the case of pressure surges there is a risk that the valve opens briefly to the non-sterile discharge line and recontamination takes place. When used in filling processes for food, especially in beverages, the risk of recontamination is reduced by the fact that the housing of the safety valve is constantly flowed through with steam, but without pressure. This Verfahrenswelse leads to a permanent local heating of the pipeline network, which leads to a simple increase in temperature by the heat conduction within the metallic piping materials in more remote regions, without sterilization effect. Such a slight increase in temperature in turn accelerates the growth of germs. Furthermore, this solution is energetically problematic.

Bekannt ist der Einsatz einer Berstscheibe, die mit einem nachgeschalteten Sicherheitsventil gekoppelt ist. Die Berstscheibe schließt mehr oder weniger eben mit der Rohrleitung ab und wird einseitig bei den regelmäßigen Reinigungs- und Sterilisierungsroutinen behandelt. Diese Lösung ermöglicht es, dass bei elnem Bruch der Berstscheibe der Prozess kontrolliert beendet werden kann. Nachteillg an dem Einsatz von Berstscheiben sind die Kosten bei dem Verlust einer Berstscheibe und dem nachfolgenden Arbeits- und Reinigungsaufwand, wenn eine Berstscheibe ersetzt werden muss.The use of a rupture disk, which is coupled to a downstream safety valve, is known. The rupture disc is more or less level with the tubing and is treated unilaterally during regular cleaning and sterilization routines. This solution makes it possible to end the process in a controlled manner in the event of a rupture of the rupture disk. Nachteillg the use of rupture discs are the cost of loss of a rupture disc and the subsequent work and cleaning effort when a rupture disc must be replaced.

Bekannt ist ein Prozessventil zur Verwendung in der Lebensmitteltechnologie ( DE 203 17 882 U1 ), um flüssige bis zähflüssige Produkte, wie z.B. Tomaten Ketchup oder Joghurt unter sterilen Bedingungen In einem Fördersystem zu steuern. Das Prozessventil weist hierfür zwei durch Betätigungseinrichtungen betätlgbare Ventile auf, die eingangsseitig jeweils mit einer Rohrleitung eines Rohrleitungsnetzwerks verbunden sind und miteinander über eine Sperrkammer in Verbindung stehen, die gesteuert durch Steuerventile von einem Sperrmedium durchströmbar ist. Dieses bekannte Prozessventil ist aber als Überdrucksicherungsvorrichtung weder bestimmt, noch geeignet.A process valve is known for use in food technology ( DE 203 17 882 U1 ) to control liquid to viscous products such as tomato ketchup or yogurt under sterile conditions in a conveyor system. For this purpose, the process valve has two valves which can be actuated by actuators, which are each connected on the input side to a pipeline of a pipeline network and communicate with one another via a barrier chamber, which can be flowed through by a blocking medium under the control of control valves. However, this known process valve is neither intended nor suitable as an overpressure safety device.

Bekannt ist weiterhin eine Vorrichtung zum Reinigen und/oder Sterilisieren von speziellen Ventilen ( US 2004/0238014 A1 ), die bei medizinischen Instrumenten und dabei speziell bei Endoskopen Verwendung finden.Also known is a device for cleaning and / or sterilizing special valves ( US 2004/0238014 A1 ), which are used in medical instruments and especially in endoscopes.

Bekannt ist auch eine Schankanlage ( DE199 22 084 A1 ) mit einer Entkeimungseinrichtung, Heizeinrichtung, Ausblaseinrichtung, Strahlungseinrichtung, Trocknungseinrichtung, Flüssigkeits- oder Gas-Spülelnrichtung. In einem Rohrleitungsnetzwerk der Schankeinrichtung sind für das Reinigen, Entkeimen usw. verschiedene, durch eine Steuereinrichtung gesteuerte Ventile vorgesehen.Also known is a dispensing system ( DE199 22 084 A1 ) with a degermination device, heating device, blow-out device, radiation device, drying device, liquid or gas flushing direction. In a piping network of the hopper various, controlled by a controller valves are provided for cleaning, sterilizing, etc.

Die Aufgabe der Erfindung ist es daher, eine Vorrichtung zu offenbaren, die die vorstehend genannten Nachteile behebt.The object of the invention is therefore to disclose a device which overcomes the disadvantages mentioned above.

Dies wird durch eine Überdrucksicherungsvorrichtung (1) für Rohrleitungsnetzwerken erreicht, die eine Zuleitung umfasst, welche von dem zu sichernden Rohrleitungsnetzwerk zu der Überdrucksicherungsvorrichtung (1) führt, mindestens ein Sicherheitsventil und eine Ableitung aufweist. Zentral hierbei ist, dass mindestens zwei Sicherheitsventile (2)(3) vorgesehen sind, und beide Sicherheitsventile eine Einlassseite und eine Auslassseite aufweisen, wobei das erste Sicherheitsventil (2) mit einer Leitung des Rohrleitungsnetzwerkes verbunden ist, und das ersten mit dem zweiten Sicherheitsventil (3) über eine Verbindungsrohrleitung (4) verbunden ist. Dabei weist die Verbindungsrohrieltung (4) eine Zuleitung und eine Ableitung aufweist, über welche ein flüssiges oder gasförmiges Spül-, Reinigungs- und/oder Sterillsierungsmittel zu- und ableitbar ist.This is achieved by a pipe network overpressure safety device (1) comprising a supply line leading from the pipeline network to be secured to the overpressure safety device (1), having at least one safety valve and one drainage line. Central here is that at least two safety valves (2) (3) are provided, and both safety valves have an inlet side and an outlet side, wherein the first safety valve (2) is connected to a line of the pipeline network, and the first to the second safety valve (2). 3) is connected via a connecting pipe (4). In this case, the Verbindungsrohrieltung (4) has a supply line and a derivative, via which a liquid or gaseous rinsing, cleaning and / or Sterbesierungsmittel is supplied and derivable.

Idealerweise ist das erste Sicherheitsventil (2) derart konstruiert oder eingestellt, dass dieses einem höheren Grenzdruck standhält, als das Sicherheitsventil (3). Diese Konstruktion ermöglicht es, dass das Öffnen des ersten Sicherheitsventils nicht zu einer Unsterilität führt, sondern das Verfahren im Anschluss an einen Druckschlag oder eine Druckspitze nicht unterbrochen werden muss. Der Rohrinnenraum der Verbindungsrohrleitung kann nach einem solchen Ereignis und regelmäßig mit einem geeigneten Sterilisierungsmittel beaufschlagt werden, wie zum Beispiel Dampf, Ozon, H2O2 oder Peressigsäure. Unter Grenzdruck soll hierbei die Druckhöhe verstanden werden, bei der das jeweilige Sicherheitsventil öffnet.Ideally, the first safety valve (2) is designed or adjusted to withstand a higher limit pressure than the safety valve (3). This design allows the opening of the first safety valve not to lead to sterility, but the process must not be interrupted following a pressure shock or a pressure peak. The pipe interior of the connecting pipe can be acted upon after such an event and regularly with a suitable sterilizing agent, such as steam, ozone, H 2 O 2 or peracetic acid. By limiting pressure is meant here the pressure level at which the respective safety valve opens.

Vorteilhafterweise ist die Belastbarkeit der Sicherheitsventile derart, dass der Grenzdruck des zweiten Sicherheitsventils (3) um 50% unterhalb des Grenzdruckes des ersten Sicherheitsventils (2) liegt oder noch kleiner ist. Dabei muss beachtet werden, dass der Druck des Sterilisierungsmediums, das durch die Verbindungsrohrleitung geleitet wird, unterhalb des Grenzdrucks des zweiten Sicherheitsventils liegt.Advantageously, the load capacity of the safety valves is such that the limit pressure of the second safety valve (3) is 50% below the limit pressure of the first safety valve (2) or even smaller. It should be noted that the pressure of the sterilizing medium, which is passed through the connecting pipe, is below the limit pressure of the second safety valve.

Die Strömungsführung in der Verbindungsrohrleitung (4) kann insbesondere beim Einsatz von flüssigen Sterilisationsmitteln problematisch sein, so dass bei einer verbesserten Variante die Zuleitung des Sterilisierungsmittels direkt in die Auslassseite des ersten Sicherheitsventils (2) führt und die Ableitung direkt mit der Einlassseite des zweiten Sicherheitsventils (3) verbunden ist. Hierdurch wird sichergestellt, dass eine definierte Strömung in der Verbindungsrohrleitung (4) erfolgt.The flow guidance in the connecting pipeline (4) can be problematic, in particular in the use of liquid sterilizing agents, so that in an improved variant the supply of the sterilizing agent leads directly into the outlet side of the first safety valve (2) and the discharge directly to the inlet side of the second safety valve (FIG. 3) is connected. This ensures that a defined flow in the connecting pipe (4) takes place.

Diese Variante kann noch verbessert werden, indem das Ende der Zuleitung in der Auslassseite oder in der Verbindungsrohrleitung derart ausgerichtet wird, dass dessen Auslass auf den Ventilsitz des ersten Sicherheitsventils (2) gerichtet ist. Damit wird eine schnellst mögliche und hoch effektive Sterilisierung des Ventilsitzes sicher gestellt. Das Ende der Zuleitung sollte hierfür vom Ventilsitz des ersten Sicherheitsventils (2) maximal 20 mm entfernt sein.This variant can be further improved by aligning the end of the supply line in the outlet side or in the connecting pipe such that its outlet is directed to the valve seat of the first safety valve (2). This ensures the fastest possible and highly effective sterilization of the valve seat. The end of the supply line should be a maximum of 20 mm away from the valve seat of the first safety valve (2).

Eine weite Verbesserung besteht darin, dass mehrere Zuleitungen in die Verbindungsrohrleitung (4) führen oder dass auf beide Ventilsitze, den Ventilsitz des ersten und des zweiten Sicherheitsventils, mindestens ein Auslass der Zuleitung gerichtet ist.A further improvement consists in that several supply lines lead into the connecting pipe (4) or that at least one outlet of the supply line is directed onto both valve seats, the valve seat of the first and the second safety valve.

Vorteilhafterweise sollte in der Ableitung ein Kondensatabscheider angeordnet sein und die Verbindungsrohrleitung (4) derart angeordnet oder geformt sein, dass Kondensat frei abfließen kann.Advantageously, a condensate separator should be arranged in the discharge and the connecting pipe (4) should be arranged or shaped in such a way that condensate can flow freely.

Von der Erfindung ist weiterhin umfasst ein Verfahren zur Überdruckabsicherung von Rohrleitungsnetzwerken, welches eine Ausführungsform der vorstehend genannten Vorrichtungen umfasst.The invention further comprises a method for overpressure protection of pipeline networks, which comprises an embodiment of the abovementioned devices.

Die Erfindung ist anhand von zwei Ausführungsbeispielen in den Figuren 1 und 2 gezeigt.

  • Figur 1 zeigt schematisch die grundsätzliche Anordnung
  • Figur 2 zeigt eine spezielle Anordnung der Auslässe innerhalb der Verbindungsrohrleitung.
The invention is based on two embodiments in the FIGS. 1 and 2 shown.
  • FIG. 1 shows schematically the basic arrangement
  • FIG. 2 shows a special arrangement of the outlets within the connecting pipe.

Figur 1 ein zeigt schematisch die Überdrucksicherungsvorrichtung 1, umfassend die beiden Sicherheitsventile 2 und 3. Das erste Sicherheitsventil 2, mit einem Grenzdruck von 5,5 bar und das zweite Sicherheitsventil 3 mit einem Grenzdruck von 2,0 bar, sind über die Verbindungsrohrleitung 4 verbunden. Das Sicherheitsventil 2 ist über einen Rohrstutzen 5 mit der Rohrleitung 6 verbunden, die Teil des zu überwachenden Rohrleitungsnetzwerkes (nicht dargestellt) ist. Zu der Verbindungsrohrleitung 4 führt eine Zuleitung 7, in deren Leitungsweg ein gesteuertes Ventil 8 und eine Rückschlagklappe 9 angeordnet ist. Der Pfeil deutet die Strömungsrichtung des Sterilisierungsmediums an. FIG. 1 1 schematically shows the overpressure safety device 1, comprising the two safety valves 2 and 3. The first safety valve 2, with a limiting pressure of 5.5 bar and the second safety valve 3 with a limit pressure of 2.0 bar, are connected via the connecting pipe 4. The safety valve 2 is connected via a pipe socket 5 with the pipe 6, which is part of the monitored pipeline network (not shown). To the connecting pipe 4 leads a supply line 7, in the conduction path of a controlled valve 8 and a check valve 9 is arranged. The arrow indicates the flow direction of the sterilization medium.

Von der Verbindungsrohrleitung 4 weg führt die Ableitung 10, die mit einem Kondensatabscheider 11 verbunden ist. Die in Figur 1 gezeigte Überdrucksicherungsvorrichtung 1 wird idealerweise mit Dampf beaufschlagt. Der Dampf bildet eine aktive Sterilsperre. Im Bedarfsfall ist es möglich, den Zwischenraum kontinuierlich zu sterilisiert. Der besondere Vorteil liegt darin, dass selbst bei einem Defekt des Faltenbalgs über den Ventilschaft keine Kontamination in das Rohrleitungssystem hinein stattfinden kann.From the connecting pipe 4 away leads the discharge 10, which is connected to a condensate 11. In the FIG. 1 shown overpressure protection device 1 is ideally applied with steam. The vapor forms an active sterile barrier. If necessary, it is possible to sterilize the gap continuously. The particular advantage is that even with a defect of the bellows on the valve stem no contamination into the piping system can take place inside.

Eventuelle Produktleckagen des ersten Sicherheitsventils 2 bei Druckspitzen im Rohr 6, fließen diese zusammen mit dem Kondensat ab. Bei der Reinigung werden beide Sicherheitsventile zusammen getaktet. Bei Sterilisation brauchen die Ventile nicht getaktet werden, weil das heiße Wasser in der Produktrohrleitung zusammen mit dem Dampf in der Verbindungsrohrleitung 4 den Ventilsitz ausreichend aufheizt und sterilisiert. Unterhalb der Auslassseite 19 des zweiten Sicherheitsventils 3 ist ein Abfluss 20 vorgesehen.Possible product leaks of the first safety valve 2 at pressure peaks in the pipe 6, these flow off together with the condensate. During cleaning, both safety valves are clocked together. During sterilization, the valves do not need to be clocked because the hot water in the product tubing together with the steam in the connecting tubing 4 sufficiently heats and sterilizes the valve seat. Below the outlet side 19 of the second safety valve 3, a drain 20 is provided.

Figur 2 zeigt ebenfalls schematisch die Überdrucksicherungsvorrichtung 1, welche insbesondere für den Einsatz eines flüssigen Sterilisierungsmediums geeignet ist. Die Zuleitung 7 verzweigt sich in der Verbindungsrohrleitung in einen linken und einen rechten Ast. Der rechte Ast führt in die Auslassseite 12 des ersten Sicherheitsventils 2 und der Auslass 13 des rechten Astes der Zuleitung 7 ist direkt auf den Ventilsitz 14 gerichtet. FIG. 2 also schematically shows the overpressure protection device 1, which is particularly suitable for the use of a liquid sterilization medium. The supply line 7 branches in the connecting pipe into a left and a right branch. The right branch leads into the outlet side 12 of the first safety valve 2 and the outlet 13 of the right branch of the supply line 7 is directed directly onto the valve seat 14.

Der linke Ast der Zuleitung 7 führt in die Einlassseite 15 des zweiten Sicherheitsventils 3 und der Auslass 16 steht dem Ventilsitz 17 direkt gegenüber und ist auf diesen gerichtet. Im Bereich des Flansches 18 ist eine Erweiterung vorgesehen, so dass sich Restflüssigkeit oder Kondensat dort sammeln und abfließen kann. In diesem Bereich ist auch die Ableitung 10 angeordnet. Diese Anordnung sicher eine ideale Strömungsführung in der Verbindungsrohrleitung 4.The left branch of the supply line 7 leads into the inlet side 15 of the second safety valve 3 and the outlet 16 is directly opposite the valve seat 17 and is directed onto this. In the region of the flange 18 an extension is provided so that residual liquid or condensate can collect and drain there. In this area, the derivative 10 is arranged. This arrangement certainly an ideal flow guidance in the connecting pipe 4.

Claims (13)

  1. A valve device (1) for pipeline networks, comprising an inlet pipe leading from the pipeline network to be secured to the valve device (1), having at least one first and one second valve (2, 3) respectively having an inlet side and an outlet side and of which the first valve (2) is connected to a pipe (6) of the pipeline network, the valves (2, 3) being connected via a connecting pipeline (4) having an inlet pipe (7) and a discharge pipe (10), by means of which a liquid or gaseous purge, cleaning and/or sterilization agent can be fed in and discharged,
    characterized in that
    the valve device is formed as an overpressure safety device (1) including a discharge pipe and that the valves are safety valves (2, 3).
  2. The valve device according to claim 1, characterized in that the first safety valve (2) with its outlet side and the second safety valve (3) with its inlet side are connected to the connecting pipeline (4).
  3. The valve device according to claim 1 or 2, characterized in that the first safety valve (2) withstands a higher limit pressure than the second safety valve (3).
  4. The valve device according to claim 2, characterized in that the limit pressure of the second safety valve (3) is 50% or less than the limit pressure of the first safety valve (2).
  5. The valve device according to any one of the preceding claims, characterized in that the inlet pipe (7) leads into the outlet side (13) of the first safety valve (2) and the discharge pipe (10) leads into the inlet side (15) of the second safety valve (3).
  6. The valve device according to any one of the preceding claims, characterized in that the end of the inlet pipe in the outlet side or in the connecting pipeline is oriented in such a manner that the outlet thereof is directed onto a valve seat of the first safety valve (2).
  7. The valve device according to any one of claims 4 or 5, characterized in that the end of the inlet pipe (7) is a maximum of 20 mm away from the valve seat of the first safety valve (2).
  8. The valve device according to any one of the preceding claims, characterized in that a plurality of inlet pipes lead into the connecting pipeline (4).
  9. The valve device according to any one of the preceding claims, characterized in that at least one outlet of the inlet pipe is directed onto the valve seat of the first and the second safety valves.
  10. The valve device according to any one of the preceding claims, characterized in that a condensate separator (11) is located in the discharge pipe and the connecting pipeline (4) is disposed or shaped to drain condensate.
  11. A method for pressure relief in pipeline networks, characterized in that a valve device according to any one of the preceding claims is used.
  12. The method according to claim 11, characterized in that as a sterilizing agent steam, active oxygen or a mixture is used.
  13. The method according to claim 11, characterized in that as a sterilizing agent H2O2 or peracetic acid is used.
EP20090729440 2008-04-11 2009-03-21 Device and method for aseptic pressure relief Active EP2279048B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09729440T PL2279048T3 (en) 2008-04-11 2009-03-21 Device and method for aseptic pressure relief

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008018665A DE102008018665B4 (en) 2008-04-11 2008-04-11 Device and method for aseptic pressure relief
PCT/EP2009/002099 WO2009124648A1 (en) 2008-04-11 2009-03-21 Device and method for aseptic pressure relief

Publications (2)

Publication Number Publication Date
EP2279048A1 EP2279048A1 (en) 2011-02-02
EP2279048B1 true EP2279048B1 (en) 2011-07-20

Family

ID=40718578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090729440 Active EP2279048B1 (en) 2008-04-11 2009-03-21 Device and method for aseptic pressure relief

Country Status (7)

Country Link
US (1) US8985134B2 (en)
EP (1) EP2279048B1 (en)
AT (1) ATE516894T1 (en)
CA (1) CA2712646C (en)
DE (1) DE102008018665B4 (en)
PL (1) PL2279048T3 (en)
WO (1) WO2009124648A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
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US9377116B2 (en) * 2013-09-16 2016-06-28 The Boeing Company Valve and method of relieving overpressure in a fluid supply system

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Also Published As

Publication number Publication date
US20110017313A1 (en) 2011-01-27
EP2279048A1 (en) 2011-02-02
US8985134B2 (en) 2015-03-24
CA2712646C (en) 2012-10-23
DE102008018665A1 (en) 2009-10-29
DE102008018665B4 (en) 2011-02-03
ATE516894T1 (en) 2011-08-15
CA2712646A1 (en) 2009-10-15
PL2279048T3 (en) 2011-12-30
WO2009124648A1 (en) 2009-10-15

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