EP1079292B1 - Gas pressure regulator - Google Patents

Gas pressure regulator Download PDF

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Publication number
EP1079292B1
EP1079292B1 EP00116540A EP00116540A EP1079292B1 EP 1079292 B1 EP1079292 B1 EP 1079292B1 EP 00116540 A EP00116540 A EP 00116540A EP 00116540 A EP00116540 A EP 00116540A EP 1079292 B1 EP1079292 B1 EP 1079292B1
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EP
European Patent Office
Prior art keywords
pressure
gas
pressure regulator
bottle
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
EP00116540A
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German (de)
French (fr)
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EP1079292A1 (en
Inventor
Josef Brandtner
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Truma Geraetetechnik GmbH and Co KG
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Truma Geraetetechnik GmbH and Co KG
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Publication of EP1079292A1 publication Critical patent/EP1079292A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F17C13/045—Automatic change-over switching assembly for bottled gas systems with two (or more) gas containers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0326—Valves electrically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0335—Check-valves or non-return valves

Definitions

  • the invention relates to a gas pressure control system.
  • Gas pressure control systems can be found e.g. B. in the supply of a consumer in a caravan or caravan using fuel gas.
  • the gas pressure control system on the bottle valve of a supply bottle that holds liquid gas screwed on or coupled by means of a high pressure hose.
  • the operating pressure regulator provided in the gas pressure control system regulates the high one Bottle pressure (e.g. 16 bar) to one for the downstream consumer suitable operating pressure (e.g. 30 mbar).
  • each of the bottles with its own pressure regulator to be provided the operating pressure regulator belonging to the operating bottle is set to a somewhat higher value (e.g. 33 mbar) than one to Reserve pressure regulator belonging to the reserve bottle (e.g. 27 mbar).
  • the controller outputs are brought together via a T-piece and connected to the consumer. This means that the pressures emitted by the regulators stand against each other, so that in the event of a gas request from the consumer initially exclusively Pressure is supplied by the company bottle.
  • Similar gas pressure control systems are also from DE 298 02 433 U1, the DE-GM 722 91 47 and DE-GM 169 04 91 are known. It is also possible here to switch between a first and a second gas storage bottle, wherein The operating principles of these systems are based on the fact that for every gas storage bottle a separate pressure reducing valve is available, the pressure chambers of the two Pressure reducing valves are interconnected and the pressure reducing valves are set to different high control pressures. The pressure drops in the one gas bottle under the pressure on the pressure reducing valve for the lower pressure is set, an automatic switchover to other gas storage bottle.
  • the medium pressure regulator of the operating bottle is set to a higher value (e.g. 600 mbar) than the medium pressure regulator the reserve bottle (e.g. 300 mbar).
  • the outputs of the medium pressure regulator are in turn merged and sent to an operating pressure regulator directed to the operating pressure required by the consumer (e.g. 30 mbar).
  • the invention has for its object to provide a gas pressure control system, that while maintaining the functional advantages of the already known systems is simpler in construction, requires fewer parts and can be easily retrofitted is.
  • three connections are to Connection of two gas storage bottles and one consumer provided whereby - as already known - before the third connection for the consumer Operating pressure regulator is attached.
  • the operating pressure regulator is connected to the first connection, which is used to connect the operating bottle, via a three-way element coupled, at the then still free end a valve, preferably a check valve is provided, which in turn with one on the second connection and thus the medium pressure regulator provided on the reserve bottle is coupled.
  • the valve is designed so that there is a gas flow allows only in one direction, from the medium pressure regulator to the three-way element. But this only if there is a pressure drop in the flow over the valve, d. i.e. when the pressure is on the three-way element side is lower than the pressure on the side of the medium pressure regulator.
  • the gas pressure control system according to the invention can also be carried out in a simple manner in existing gas supply systems, in which e.g. B. a supply bottle with operating pressure regulator, retrofit by the three-way element between the bottle valve belonging to the flat and the existing one Operating controller is installed together with the other components.
  • B. a supply bottle with operating pressure regulator
  • This has the advantage that the already existing components function Retain and therefore no component is superfluous even after the expansion becomes what enables an economical use of all components.
  • a pressure display provided to display a pressure upstream of the operating pressure regulator.
  • a signaling device that can be pressurized, which falls below a predetermined pressure in the system emits a signal that the Users - e.g. B. in the interior of his caravan - can be displayed.
  • the Signal generator can also be designed such that it has a valve position of the Check valve detected.
  • FIG. 1 In the first embodiment of the gas pressure control system according to the invention shown in FIG. 1 is a company bottle 1 filled with liquid gas Bottle valve 2 at a first connection 3 at one end 4a of a three-way element serving T-piece 4 coupled.
  • Another end 4b of the T-piece 4 communicates with an operating pressure regulator 5, the third terminal 6 for a consumer, not shown, for. B. a heater in a caravan, with pressure-reduced gas of z. B. 30 mbar fed.
  • a pressure switch 8 At a still free third end 4c of the T-piece 4 are one after the other Pressure gauge serving pressure gauge 7, a pressure switch 8, a check valve 9 and a medium pressure regulator 10 are arranged.
  • the medium pressure regulator 10 will via a second connection 11 from a liquid gas also filled Reserve bottle 12 fed with a bottle valve 13.
  • the check valve 9 is installed such that there is only a gas flow of allows the medium pressure regulator 10 to the T-piece 4, but not vice versa.
  • the operating pressure regulator 5 When requested by the consumer, the operating pressure regulator 5 generates one Gas flow at the third connection 6 with a gas pressure of 30, for example mbar. Due to the bottle pressure at the check valve 9 (16 bar) the check valve 9 is kept closed. On the other side of the Check valve 9 is a regulated by the medium pressure regulator 10 and the reserve bottle 12 fed gas pressure of, for example, 600 mbar, the is not sufficient to open the check valve 9. This will on the one hand ensures that the high bottle pressure from the operating bottle 1 is not in existing between the check valve 9 and the medium pressure regulator 10 Penetrate pipes or hoses 14 and possibly cause interference can. On the other hand, it is prevented that already in regular operation, i. H. at Removal from the operating bottle 1, also gas from the reserve bottle 12 can be, so that an unnoticed emptying of the reserve bottle 12th is prevented.
  • the operator can use the manometer 7 Read the status of the system. If the manometer 7 has a pressure in the Order of magnitude of the pressure from the medium pressure regulator 10 means that that the operating bottle 1 is at least largely emptied.
  • This state can also be caused by the pressure switch 8 serving as a signal transmitter be recognized, the signal when the pressure falls below the predetermined generated that is displayed, for example, inside the vehicle to be heated can be.
  • the pressure switch 8 can also be coupled directly to the check valve 9 be and a position or a switching state of the check valve 9 detect and display.
  • the second embodiment of the invention shown in FIG. 2 basically has the same functionality.
  • the T-piece is 4, the operating pressure regulator 5 and the check valve 9 combined in one unit 20.
  • the assembly 20 can, for. B. be formed by a cast housing, whereby the separation and thus still required in the first embodiment Have sealing points between the individual components avoided. A reduced one The result is assembly and maintenance effort.
  • the manometer 7 and / or the Pressure switch 8 are integrated, thereby avoiding further sealing points to let. If necessary, it is also possible to use the manometer 7 or the Pressure switch 8 between the bottle valve 2 and the assembly 20 still also to be installed in the system.

Description

Die Erfindung betrifft eine Gasdruckregelanlage.The invention relates to a gas pressure control system.

Gasdruckregelanlagen finden z. B. bei der Versorgung eines Verbrauchers in einem Wohnwagen oder Caravan mit Brenngas Verwendung. Dazu wird die Gasdruckregelanlage an dem Flaschenventil einer Flüssiggas aufnehmenden Versorgungsflasche angeschraubt oder mittels eines Hochdruckschlauchs angekoppelt. Der in der Gasdruckregelanlage vorgesehene Betriebsdruckregler regelt den hohen Flaschendruck (z. B. 16 bar) auf einen für den nachgeschalteten Verbraucher geeigneten Betriebsdruck (z. B. 30 mbar) herunter.Gas pressure control systems can be found e.g. B. in the supply of a consumer in a caravan or caravan using fuel gas. For this, the gas pressure control system on the bottle valve of a supply bottle that holds liquid gas screwed on or coupled by means of a high pressure hose. The operating pressure regulator provided in the gas pressure control system regulates the high one Bottle pressure (e.g. 16 bar) to one for the downstream consumer suitable operating pressure (e.g. 30 mbar).

Für den Nutzer ist es sehr komfortabel, wenn außer der als Betriebsflasche dienenden Gasversorgungsflasche noch eine weitere, als Reserveflasche dienende Gasflasche vorgesehen ist. Beim Umschalten der Gasversorgung von der Betriebsflasche zur Reserveflasche kann ihm auf verschiedene Weise mitgeteilt werden, daß sich seine Gasvorräte dem Ende zu neigen und ein Austausch von zumindest der Betriebsflasche erforderlich ist.It is very convenient for the user if, in addition to being a company bottle serving gas supply bottle still another, serving as a reserve bottle Gas bottle is provided. When switching the gas supply from the Company bottle to the reserve bottle can be communicated to him in different ways be that his gas reserves are running out and an exchange of at least the operating bottle is required.

Zu diesem Zweck ist es bekannt (z. B. die Gasdruckregelanlage "DUOMATIC" der TRUMA Gerätetechnik GmbH & Co.) jede der Flaschen mit einem eigenen Druckregler zu versehen, wobei der zu der Betriebsflasche gehörende Betriebsdruckregler auf einen etwas höheren Wert (z. B. 33 mbar) eingestellt ist als ein zu der Reserveflasche gehörender Reservedruckregler (z. B. 27 mbar). Die Reglerausgänge werden über ein T-Stück zusammengeführt und mit dem Verbraucher verbunden. Dadurch stehen die von den Reglern abgegebenen Drücke gegeneinander, so daß im Falle einer Gasanforderung vom Verbraucher zunächst ausschließlich Druck von der Betriebsflasche geliefert wird. Erst wenn die Betriebsflasche so weit entleert ist, daß der Betriebsdruckregler nicht mehr den vorgewählten Druckwert halten kann, wodurch der Versorgungsdruck zum Verbraucher absinkt, wird der Reservedruckregler aktiv und die Reserveflasche beginnt sich zu entleeren. Zu diesem Zeitpunkt ist allerdings die Betriebsflasche bereits weitgehend erschöpft.For this purpose it is known (e.g. the "DUOMATIC" gas pressure control system from TRUMA Geräteechnik GmbH & Co.) each of the bottles with its own pressure regulator to be provided, the operating pressure regulator belonging to the operating bottle is set to a somewhat higher value (e.g. 33 mbar) than one to Reserve pressure regulator belonging to the reserve bottle (e.g. 27 mbar). The controller outputs are brought together via a T-piece and connected to the consumer. This means that the pressures emitted by the regulators stand against each other, so that in the event of a gas request from the consumer initially exclusively Pressure is supplied by the company bottle. Only when the company bottle is so far drained that the operating pressure regulator is no longer the preselected one Can maintain pressure value, reducing the supply pressure to the consumer drops, the reserve pressure regulator becomes active and the reserve bottle begins to empty yourself. At this point, however, the company bottle is already there largely exhausted.

Ähnliche Gasdruckregelanlagen sind auch aus der DE 298 02 433 U1, der DE-GM 722 91 47 und der DE-GM 169 04 91 bekannt. Auch hier ist es möglich, zwischen einer ersten und einer zweiten Gasvorratsflasche umzuschalten, wobei die Wirkprinzipien dieser Anlagen darauf beruhen, dass für jede Gasvorratsflasche ein separates Druckminderventil vorhanden ist, die Druckräume der beiden Druckminderventile miteinander verbunden sind und die Druckminderventile auf unterschiedlich hohe Regeldrücke eingestellt sind. Sinkt der Druck in der einen Gasflasche unter den Druck, der an dem Druckminderventil für den niedrigeren Druck eingestellt ist, erfolgt eine selbsttätige Umschaltung auf die andere Gasvorratsflasche.Similar gas pressure control systems are also from DE 298 02 433 U1, the DE-GM 722 91 47 and DE-GM 169 04 91 are known. It is also possible here to switch between a first and a second gas storage bottle, wherein The operating principles of these systems are based on the fact that for every gas storage bottle a separate pressure reducing valve is available, the pressure chambers of the two Pressure reducing valves are interconnected and the pressure reducing valves are set to different high control pressures. The pressure drops in the one gas bottle under the pressure on the pressure reducing valve for the lower pressure is set, an automatic switchover to other gas storage bottle.

Noch komfortabler ist eine Lösung, bei der jede der Gasflaschen mit einem Mitteldruckregler ausgestattet ist, wobei der Mitteldruckregler der Betriebsflasche auf einen höheren Wert (z. B. 600 mbar) eingestellt ist als der Mitteldruckregler der Reserveflasche (z. B. 300 mbar). Die Ausgänge der Mitteldruckregler werden wiederum zusammengeführt und an einen Betriebsdruckregler geleitet, der den für den Verbraucher erforderlichen Betriebsdruck (z. B. 30 mbar) einstellt. Bei dieser Anordnung kann das Umschalten zwischen der Betriebsflasche und der Reserveflasche noch zuverlässiger erfolgen. Vor allem wird ein versehentliches vorzeitiges Entleeren der Reserveflasche, was bei der zuerst geschilderten Lösung bei großer Gasmengenanforderung und einem durch einen begrenzten Durchlaß begründeten niedrigen Druck sowie einer zu geringen Differenz zwischen den eingestellten Drücken der Flaschenregler möglich ist, vermieden.Even more convenient is a solution in which each of the gas cylinders comes with one Medium pressure regulator is equipped, the medium pressure regulator of the operating bottle is set to a higher value (e.g. 600 mbar) than the medium pressure regulator the reserve bottle (e.g. 300 mbar). The outputs of the medium pressure regulator are in turn merged and sent to an operating pressure regulator directed to the operating pressure required by the consumer (e.g. 30 mbar). With this arrangement, switching between the Operating bottle and the reserve bottle are made even more reliably. Especially is an accidental premature emptying of the reserve bottle, which in the first described solution with a large gas quantity requirement and one due to a limited passage low pressure and a too slight difference between the set pressures of the bottle regulator possible is avoided.

Auch wenn sich die geschilderten Lösungen in der Praxis bereits hervorragend bewährt haben, erfordern sie einen nicht unerheblichen baulichen Aufwand, der insbesondere im Falle einer Nachrüstung einer bereits vorhandenen Gasversorgungsanlage zu nicht unerheblichen Kosten führen kann.Even if the solutions described are already excellent in practice have proven themselves, they require a not inconsiderable structural effort that especially in the case of retrofitting an existing gas supply system can lead to not inconsiderable costs.

Der Erfindung liegt die Aufgabe zugrunde, eine Gasdruckregelanlage anzugeben, die unter Beibehaltung der funktionellen Vorteile der bereits bekannten Anlagen einfacher aufgebaut ist, weniger Teile benötigt und ohne großen Aufwand nachrüstbar ist.The invention has for its object to provide a gas pressure control system, that while maintaining the functional advantages of the already known systems is simpler in construction, requires fewer parts and can be easily retrofitted is.

Die Aufgabe wird durch eine erfindungsgemäße Gasdruckregelanlage gemäß Patentanspruch 1 gelöst.The object is achieved by a gas pressure control system according to the invention Claim 1 solved.

Bei der erfindungsgemäßen Gasdruckregelanlage sind drei Anschlüsse zum Anschließen von zwei Gasvorratsflaschen und einem Verbraucher vorgesehen, wobei - wie bereits bekannt - vor dem dritten Anschluß für den Verbraucher ein Betriebsdruckregler angebracht ist. Der Betriebsdruckregler wird mit dem ersten Anschluß, der zum Anschließen der Betriebsflasche dient, über ein Dreiwegeelement gekoppelt, an dessen dann noch freiem Ende ein Ventil, vorzugsweise ein Rückschlagventil, vorgesehen ist, das seinerseits mit einem an dem zweiten Anschluß und damit an der Reserveflasche vorgesehenen Mitteldruckregler gekoppelt ist. Das Ventil ist derart gestaltet, daß es eine Gasströmung nur in eine Richtung zuläßt, und zwar von dem Mitteldruckregler zu dem Dreiwegeelement. Dies aber auch nur dann, wenn ein Druckabfall der Strömung über dem Ventil besteht, d. h., wenn der Druck auf der Dreiwegeelement-Seite niedriger ist als der Druck auf der Seite des Mitteldruckreglers.In the gas pressure control system according to the invention, three connections are to Connection of two gas storage bottles and one consumer provided whereby - as already known - before the third connection for the consumer Operating pressure regulator is attached. The operating pressure regulator is connected to the first connection, which is used to connect the operating bottle, via a three-way element coupled, at the then still free end a valve, preferably a check valve is provided, which in turn with one on the second connection and thus the medium pressure regulator provided on the reserve bottle is coupled. The valve is designed so that there is a gas flow allows only in one direction, from the medium pressure regulator to the three-way element. But this only if there is a pressure drop in the flow over the valve, d. i.e. when the pressure is on the three-way element side is lower than the pressure on the side of the medium pressure regulator.

Bei dieser Anordnung wird zunächst nur Gas aus der Betriebsflasche entnommen und über den Betriebsdruckregler auf den für den Verbraucher erforderlichen Betriebsdruck heruntergeregelt. Dabei wird durch das Ventil verhindert, daß Gas mit Flaschendruck in den Bereich des Mitteldruckreglers bzw. einen Schlauch- oder Rohrabschnitt zwischen dem Ventil und dem Mitteldruckregler gelangt. Sobald die Betriebsflasche leer ist, fällt der Druck vor dem Betriebsdruckregler unter den Regeldruck des Mitteldruckreglers, woraufhin das Ventil und der Mitteldruckregler öffnen und Gas aus der Reserveflasche entnommen wird.With this arrangement, initially only gas is withdrawn from the operating bottle and via the operating pressure regulator to that for the consumer required operating pressure reduced. The valve prevents that gas with cylinder pressure in the area of the medium pressure regulator or a hose or pipe section between the valve and the medium pressure regulator arrives. As soon as the operating bottle is empty, the pressure in front of the Operating pressure regulator below the control pressure of the medium pressure regulator, whereupon the Open the valve and the medium pressure regulator and remove gas from the reserve bottle becomes.

Die erfindungsgemäße Gasdruckregelanlage läßt sich in einfacher Weise auch bei bestehenden Gasversorgungsanlagen, bei denen z. B. eine Versorgungsflasche mit Betriebsdruckregler vorhanden ist, nachrüsten, indem das Dreiwegeelement zwischen dem zur Flache gehörigen Flaschenventil und dem vorhandenen Betriebsregler zusammen mit den weiteren Bauelementen eingebaut wird. Dies hat den Vorteil, daß die bereits vorhandenen Bauelemente ihre Funktion behalten und somit auch nach der Erweiterung kein Bauelement überflüssig wird, was eine wirtschaftliche Nutzung aller Komponenten ermöglicht.The gas pressure control system according to the invention can also be carried out in a simple manner in existing gas supply systems, in which e.g. B. a supply bottle with operating pressure regulator, retrofit by the three-way element between the bottle valve belonging to the flat and the existing one Operating controller is installed together with the other components. This has the advantage that the already existing components function Retain and therefore no component is superfluous even after the expansion becomes what enables an economical use of all components.

Bei einer besonders vorteilhaften Weiterentwicklung der Erfindung sind der Betriebsdruckregler, das Dreiwegeelement und das Ventil zu einer Baueinheit, z. B. in einem Gußgehäuse, zusammengefaßt. Dadurch lassen sich Dichtstellen zwischen den genannten Bauelementen vermeiden, was den Montage- und Wartungsaufwand erheblich vermindert. In a particularly advantageous further development of the invention Operating pressure regulator, the three-way element and the valve to form a structural unit, e.g. B. summarized in a cast housing. This allows sealing points between the components mentioned avoid what the assembly and Maintenance effort significantly reduced.

Bei einer weiteren vorteilhaften Ausbildung der Erfindung ist eine Druckanzeige zum Anzeigen eines Drucks vor dem Betriebsdruckregler vorgesehen. Weiterhin kann ein druckbeaufschlagbarer Signalgeber vorhanden sein, der bei Unterschreiten eines vorgegebenen Drucks in der Anlage ein Signal abgibt, das dem Nutzer - z. B. im Innenraum seines Wohnwagens - angezeigt werden kann. Der Signalgeber kann auch derart ausgebildet sein, daß er eine Ventilstellung des Rückschlagventils erfaßt.In a further advantageous embodiment of the invention, a pressure display provided to display a pressure upstream of the operating pressure regulator. Farther there may be a signaling device that can be pressurized, which falls below a predetermined pressure in the system emits a signal that the Users - e.g. B. in the interior of his caravan - can be displayed. The Signal generator can also be designed such that it has a valve position of the Check valve detected.

Diese und weitere Vorteile und Merkmale der Erfindung werden nachfolgend anhand mehrerer Beispiele unter Zuhilfenahme der Figuren näher erläutert. Es zeigen:

Fig. 1
eine erste Ausführungsform einer erfindungsgemäßen Gasdruckregelanlage: und
Fig. 2
eine zweite Ausführungsform der Gasdruckregelanlage.
These and other advantages and features of the invention are explained in more detail below on the basis of several examples with the aid of the figures. Show it:
Fig. 1
a first embodiment of a gas pressure control system according to the invention: and
Fig. 2
a second embodiment of the gas pressure control system.

Bei der in Fig. 1 gezeigten ersten Ausführungsform der erfindungsgemäßen Gasdruckregelanlage ist eine mit Flüssiggas gefüllte Betriebsflasche 1 mit einem Flaschenventil 2 an einem ersten Anschluß 3 an ein Ende 4a eines als Dreiwegeelement dienenden T-Stücks 4 angekoppelt.In the first embodiment of the gas pressure control system according to the invention shown in FIG. 1 is a company bottle 1 filled with liquid gas Bottle valve 2 at a first connection 3 at one end 4a of a three-way element serving T-piece 4 coupled.

Ein weiteres Ende 4b des T-Stücks 4 kommuniziert mit einem Betriebsdruckregler 5, der einen dritten Anschluß 6 für einen nicht dargestellten Verbraucher, z. B. eine Heizung in einem Caravan, mit druckreduziertem Gas von z. B. 30 mbar speist.Another end 4b of the T-piece 4 communicates with an operating pressure regulator 5, the third terminal 6 for a consumer, not shown, for. B. a heater in a caravan, with pressure-reduced gas of z. B. 30 mbar fed.

An einem noch freien dritten Ende 4c des T-Stücks 4 sind nacheinander ein als Druckanzeige dienendes Manometer 7, ein Druckschalter 8, ein Rückschlagventil 9 und ein Mitteldruckregler 10 angeordnet. Der Mitteldruckregler 10 wird über einen zweiten Anschluß 11 von einer ebenfalls mit Flüssiggas gefüllten Reserveflasche 12 mit einem Flaschenventil 13 gespeist.At a still free third end 4c of the T-piece 4 are one after the other Pressure gauge serving pressure gauge 7, a pressure switch 8, a check valve 9 and a medium pressure regulator 10 are arranged. The medium pressure regulator 10 will via a second connection 11 from a liquid gas also filled Reserve bottle 12 fed with a bottle valve 13.

Das Rückschlagventil 9 ist derart eingebaut, daß es nur eine Gasströmung von dem Mitteldruckregler 10 zu dem T-Stück 4 zuläßt, jedoch nicht umgekehrt.The check valve 9 is installed such that there is only a gas flow of allows the medium pressure regulator 10 to the T-piece 4, but not vice versa.

Nachfolgend wird die Funktion der Druckregelanlage erläutert. The function of the pressure control system is explained below.

Zunächst liegt ein Gasdruck von der Betriebsflasche 1 mit beispielsweise 16 bar an dem T-Stück 4, dem Betriebsdruckregler 5 und dem Rückschlagventil 9 an. Bei Anforderung durch den Verbraucher erzeugt der Betriebsdruckregler 5 einen Gasstrom am dritten Anschluß 6 mit einem Gasdruck von beispielsweise 30 mbar. Durch den am Rückschlagventil 9 anliegenden Flaschendruck (16 bar) wird das Rückschlagventil 9 geschlossengehalten. Auf der anderen Seite des Rückschlagventils 9 liegt ein von dem Mitteldruckregler 10 geregelter und von der Reserveflasche 12 gespeister Gasdruck von beispielsweise 600 mbar an, der nicht ausreicht, um das Rückschlagventil 9 zu öffnen. Dadurch wird einerseits sichergestellt, daß der hohe Flaschendruck aus der Betriebsflasche 1 nicht in zwischen dem Rückschlagventil 9 und dem Mitteldruckregler 10 vorhandene Rohre oder Schläuche 14 eindringen und möglicherweise Störungen hervorrufen kann. Zum anderen wird verhindert, daß bereits im regulären Betrieb, d. h. bei Entnahme aus der Betriebsflasche 1, auch Gas aus der Reserveflasche 12 entnommen werden kann, so daß ein unbemerktes Entleeren der Reserveflasche 12 verhindert wird.First, there is a gas pressure from the operating bottle 1, for example 16 bar on the T-piece 4, the operating pressure regulator 5 and the check valve 9. When requested by the consumer, the operating pressure regulator 5 generates one Gas flow at the third connection 6 with a gas pressure of 30, for example mbar. Due to the bottle pressure at the check valve 9 (16 bar) the check valve 9 is kept closed. On the other side of the Check valve 9 is a regulated by the medium pressure regulator 10 and the reserve bottle 12 fed gas pressure of, for example, 600 mbar, the is not sufficient to open the check valve 9. This will on the one hand ensures that the high bottle pressure from the operating bottle 1 is not in existing between the check valve 9 and the medium pressure regulator 10 Penetrate pipes or hoses 14 and possibly cause interference can. On the other hand, it is prevented that already in regular operation, i. H. at Removal from the operating bottle 1, also gas from the reserve bottle 12 can be, so that an unnoticed emptying of the reserve bottle 12th is prevented.

Erst wenn die Betriebsflasche 1 soweit entleert ist, daß sie nur noch einen Druck bereitsstellt, der unter dem vom Mitteldruckregler 10 geregelten Druck - im vorliegenden Beispiel also unter 600 mbar - liegt, öffnet das Rückschlagventil 9 und Gas kann von der Reserveflasche 12 über den Mitteldruckregler 10 und das Rückschlagventil 9 zu dem Betriebsdruckregeler 5 strömen.Only when the operating bottle 1 is emptied so far that it only has one Pressure already provided, that under that regulated by the medium pressure regulator 10 Pressure - in this example below 600 mbar - the check valve opens 9 and gas can from the reserve bottle 12 via the medium pressure regulator 10 and the check valve 9 flow to the operating pressure regulator 5.

Zur Erhöhung des Komforts kann der Bediener an dem Manometer 7 den Zustand der Anlage ablesen. Wenn nämlich das Manometer 7 einen Druck in der Größenordnung des Drucks von dem Mitteldruckregler 10 anzeigt, bedeutet das, daß die Betriebsflasche 1 zumindest weitgehend geleert ist.To increase comfort, the operator can use the manometer 7 Read the status of the system. If the manometer 7 has a pressure in the Order of magnitude of the pressure from the medium pressure regulator 10 means that that the operating bottle 1 is at least largely emptied.

Dieser Zustand kann auch von dem als Signalgeber dienenden Druckschalter 8 erkannt werden, der bei Unterschreiten des vorgegebenen Drucks ein Signal erzeugt, das beispielsweise im Inneren des zu beheizenden Fahrzeugs angezeigt werden kann.This state can also be caused by the pressure switch 8 serving as a signal transmitter be recognized, the signal when the pressure falls below the predetermined generated that is displayed, for example, inside the vehicle to be heated can be.

Der Druckschalter 8 kann auch direkt mit dem Rückschlagventil 9 gekoppelt sein und eine Stellung bzw. einen Schaltzustand des Rückschlagventils 9 detektieren und anzeigen. The pressure switch 8 can also be coupled directly to the check valve 9 be and a position or a switching state of the check valve 9 detect and display.

Die in Fig. 2 gezeigte zweite Ausführungsform der Erfindung weist prinzipiell die gleiche Funktionalität auf. Jedoch sind das T-Stück 4, der Betriebsdruckregler 5 und das Rückschlagventil 9 in einer Baueinheit 20 zusammengefaßt.The second embodiment of the invention shown in FIG. 2 basically has the same functionality. However, the T-piece is 4, the operating pressure regulator 5 and the check valve 9 combined in one unit 20.

Die Baueinheit 20 kann z. B. durch ein Gußgehäuse gebildet werden, wodurch sich die bei der ersten Ausführungsform noch erforderlichen Trenn- und damit Dichtstellen zwischen den einzelnen Bauelementen vermeiden lassen. Ein reduzierter Montage- und Wartungsaufwand ist die Folge.The assembly 20 can, for. B. be formed by a cast housing, whereby the separation and thus still required in the first embodiment Have sealing points between the individual components avoided. A reduced one The result is assembly and maintenance effort.

Wenn die Anlage mit nur einer Betriebsflasche, jedoch ohne Reserveflasche betrieben werden soll, kann ein Eingang 21 am Rückschlagventil 9 mit einem nicht dargestellten Gewindestück dicht verschlossen werden. Um den Hochdruckschlauch 14 anschließen zu können, ist es zweckmäßig, den Eingang 21 für den Schlauchanschluß vorzubereiten.If the system is operated with only one company bottle, but without a reserve bottle can be, an input 21 on the check valve 9 with a thread piece, not shown, are tightly closed. To the high pressure hose 14 to be able to connect, it is appropriate to input 21 prepare for the hose connection.

In die Baueinheit 20 können weiterhin auch das Manometer 7 und/oder der Druckschalter 8 integriert werden, wodurch sich weitere Dichtstellen vermeiden lassen. Falls erforderlich, ist es aber auch möglich, das Manometer 7 oder den Druckschalter 8 zwischen dem Flaschenventil 2 und der Baueinheit 20 noch zusätzlich in die Anlage einzubauen.In the unit 20, the manometer 7 and / or the Pressure switch 8 are integrated, thereby avoiding further sealing points to let. If necessary, it is also possible to use the manometer 7 or the Pressure switch 8 between the bottle valve 2 and the assembly 20 still also to be installed in the system.

Claims (6)

  1. Gas pressure regulating system having
    a first connection (3) for connecting a first gas supply cylinder (1);
    a second connection (11) for a second gas supply cylinder (12);
    a third connection (6) for a consumer;
    an operating pressure regulator (5) arranged upstream of the third connection (6) seen in the flow direction;
    a three-way element (4) coupling the first connection (3) to the operaring pressure regulator (5); and having
    a valve (9) permitting flow only in one direction, which is arranged between the still free end of the three-way element (4) and a mean pressure regulator (10) provided at the second connection (11) such that flow is permitted only from the mean pressure regulator (10) to the three-way element (4), and this also only for a pressure drop in the flow via the valve (9).
  2. Gas pressure regulating system according to claim 1, characterised in that the operating pressure regulator (5), the three-way element (4) and the valve (9) are combined to form a constructional unit (20).
  3. Gas pressure regulating system according to claim 1 or 2, characterised in that a pressure display (7) for displaying a pressure is provided between the first counection (3), the valve (9) and the operating pressure regulator (5).
  4. Gas pressure regulating system according to one of claims 1 to 3, characterised in that a signal transmitter (8) which can be exposed to pressure is preset for releasing a signal when a preset pressure is not reached in the system.
  5. Gas pressure regulating system according to one of claims 1 to 3, characterised in that a signal transmitter is provided for releasing a signal when the valve (9) is opened.
  6. Gas pressure regulating system according to one of claims 1 to 5, characterised in that the valve is a nonreturn valve (9).
EP00116540A 1999-08-03 2000-07-31 Gas pressure regulator Expired - Lifetime EP1079292B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19936374A DE19936374C2 (en) 1999-08-03 1999-08-03 Gas pressure control system
DE19936374 1999-08-03

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EP1079292A1 EP1079292A1 (en) 2001-02-28
EP1079292B1 true EP1079292B1 (en) 2002-05-22

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EP00116540A Expired - Lifetime EP1079292B1 (en) 1999-08-03 2000-07-31 Gas pressure regulator

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EP (1) EP1079292B1 (en)
DE (2) DE19936374C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD905217S1 (en) 2018-09-05 2020-12-15 Dometic Sweden Ab Air conditioning apparatus
USD907183S1 (en) 2016-11-23 2021-01-05 Dometic Sweden Ab Air conditioning apparatus
US11772452B2 (en) 2017-11-16 2023-10-03 Dometic Sweden Ab Air conditioning apparatus for recreational vehicles

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10162092A1 (en) * 2001-12-18 2003-07-17 Gok Regler Und Armaturengmbh & Device for automatically switching a first liquid gas container to a second liquid gas container
AT505960B1 (en) * 2007-10-25 2009-07-15 Ventrex Automotive Gmbh TANK AND FUEL SUPPLY SYSTEM

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Publication number Priority date Publication date Assignee Title
DE7229147U (en) * 1972-10-26 Officine Meccaniche E Balsamo Srl Double pressure regulator for pairs of gas cylinders
DE1690491U (en) * 1954-10-30 1954-12-30 Rudolf Majert G M B H SELF-ACTING CHANGEOVER VALVE FOR LIQUID GAS TANK.
US3604632A (en) * 1969-11-12 1971-09-14 Golconda Corp Flame cutting tip
US3813916A (en) * 1973-03-19 1974-06-04 Textron Inc Meter proving system
US4023593A (en) * 1976-02-17 1977-05-17 The Rucker Company Valve and control therefor
DE29802433U1 (en) * 1998-02-16 1998-09-17 Gok Regler Und Armaturen Ges M Automatic valve for LPG

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD907183S1 (en) 2016-11-23 2021-01-05 Dometic Sweden Ab Air conditioning apparatus
US11772452B2 (en) 2017-11-16 2023-10-03 Dometic Sweden Ab Air conditioning apparatus for recreational vehicles
USD905217S1 (en) 2018-09-05 2020-12-15 Dometic Sweden Ab Air conditioning apparatus
USD944374S1 (en) 2018-09-05 2022-02-22 Dometic Sweden Ab Air conditioning apparatus

Also Published As

Publication number Publication date
DE19936374A1 (en) 2001-02-22
DE50000177D1 (en) 2002-06-27
EP1079292A1 (en) 2001-02-28
DE19936374C2 (en) 2001-06-13

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