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EP3524871B1 - Compressed gas cylinder with gas discharge valve - Google Patents

Compressed gas cylinder with gas discharge valve Download PDF

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Publication number
EP3524871B1
EP3524871B1 EP18214178.8A EP18214178A EP3524871B1 EP 3524871 B1 EP3524871 B1 EP 3524871B1 EP 18214178 A EP18214178 A EP 18214178A EP 3524871 B1 EP3524871 B1 EP 3524871B1
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EP
European Patent Office
Prior art keywords
gas
valve
compressed gas
retrieval
pressure
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.)
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Application number
EP18214178.8A
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German (de)
French (fr)
Other versions
EP3524871A1 (en
Inventor
Dr. Michael Ermel
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.)
Messer Industriegase GmbH
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Messer Industriegase GmbH
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Publication of EP3524871A1 publication Critical patent/EP3524871A1/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
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/032—Orientation with substantially vertical main axis
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/056—Small (<1 m3)
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/058—Size portable (<30 l)
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0639—Steels
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0646—Aluminium
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/0663—Synthetics in form of fibers or filaments
    • 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
    • F17C2205/0329—Valves manually 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
    • F17C2205/0338—Pressure regulators
    • 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
    • F17C2205/0382—Constructional details of valves, regulators
    • F17C2205/0385—Constructional details of valves, regulators in blocks or units
    • 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
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/036—Very high pressure (>80 bar)
    • 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
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/048—Methods for emptying or filling by maintaining residual pressure

Definitions

  • the invention relates to a compressed gas cylinder with a gas extraction valve.
  • Such a compressed gas cylinder is made of CA2975057A1 known.
  • Such gas extraction valves also called cylinder valves, are usually connected directly to the body of a compressed gas cylinder, for example screwed into a thread on the neck of the compressed gas cylinder. They usually have an extraction nozzle for connecting a consumer or for connecting to a customer's supply network and can be opened or closed manually using a handwheel.
  • compressed gas cylinders are to be understood as mobile containers that are filled with compressed gases and, after filling, are taken to another location to remove the compressed gases.
  • this is to be understood as transportable containers that have a volume of 0.5 l to 150 l and are designed for an operating pressure of more than 10 bar.
  • Compressed gas cylinders are made in particular from steel, aluminum or a composite material.
  • the EP 2 686 602 B1 A compressed gas cylinder bundle has become known whose piping system is equipped with two connections, whereby gas can be extracted from one connection with the filling pressure of the compressed gas cylinder bundle of up to 300 bar and the second connection is equipped with an integrated pressure reducer that only allows the extraction of gas with a maximum pressure of 200 bar.
  • This arrangement has proven itself with compressed gas cylinder bundles, but is not applicable to the extraction of gas from individual compressed gas cylinders.
  • Pressure reducers are also known that are integrated into the cylinder valve and can be used to reduce the pressure in a compressed gas cylinder designed for 300 bar to the operating pressure of a consumer or gas supply system.
  • the compressed gas cylinder can then no longer be refilled with 300 bar, or it must be ensured that suitable mechanisms are provided that enable the compressed gas cylinder equipped with the cylinder valve to be filled with 300 bar.
  • a pressure reducer integrated into a compressed gas cylinder valve is also available from EN 100 45 120 A1 known.
  • the pressure reduction in the The spring tension of the pressure reducer can be variably adjusted or removed completely, meaning that filling and removal from the compressed gas cylinder can take place at different pressures. This means that the working pressure of the cylinder valve must be manually adjusted to the respective task, which, however, carries a considerable risk of operating errors.
  • the invention is therefore based on the object of creating a compressed gas cylinder with a gas extraction valve which is simple in construction and enables safe extraction of gas at different pressures.
  • a compressed gas cylinder according to the invention with a gas extraction valve therefore has a valve body which is equipped in a conventional manner with a connection section for connection to a compressed gas cylinder.
  • the connection section has an external thread for screwing into an internal thread on the neck of a compressed gas cylinder.
  • Two gas channels are led through the valve body.
  • a first gas channel extends from an inlet opening which is arranged in an upstream end face of the connection section, i.e. on an end face of the valve body which, when installed, faces the interior of the compressed gas cylinder, through the valve body to a first extraction nozzle. Gas is extracted via this first gas channel at the filling pressure prevailing in the compressed gas cylinder.
  • the compressed gas cylinder is also filled via the first gas channel.
  • the gas extraction valve according to the invention therefore enables gas to be extracted at two different pressures without it being necessary to install an additional pressure reduction valve downstream of the gas extraction valve for connection to a gas supply network which is approved for a lower operating pressure than the filling pressure of the compressed gas cylinder.
  • An advantageous embodiment provides that the first gas channel and the second gas channel open out at a common inlet opening in the upstream face.
  • the two gas channels thus merge into a common gas channel at a branching point, which is arranged on the upstream side of the shut-off valves and the pressure reducer, which opens out at the common inlet opening. This means that drilling two parallel gas channels into the valve body is not necessary, particularly in the area of the connection section, which is usually only small.
  • first extraction nozzle and the second extraction nozzle are arranged on opposite sides of the valve body.
  • first extraction nozzle and the second extraction nozzle are arranged axially offset from one another on the valve body relative to a longitudinal axis of the valve body.
  • the two extraction nozzles therefore open out at different distances from the neck of the compressed gas cylinder.
  • valve body is essentially T-shaped, wherein the first extraction nozzle and the second extraction nozzle are arranged on the two legs of the T-shaped valve body.
  • a residual pressure valve also called a “residual pressure cassette” is provided in each of the extraction nozzles to ensure that the compressed gas cylinder cannot be completely emptied by a customer.
  • the cylinder valve according to the invention is basically suitable for all compressed gas cylinders according to the definition mentioned at the beginning.
  • a particularly advantageous embodiment of the invention provides that the extraction pressures at the two extraction nozzles correspond to the usual standards of today's devices or gas supply networks.
  • the gas extraction valve is designed for a filling pressure in the compressed gas cylinder, and thus also the preferred extraction pressure at the first extraction nozzle, of 300 bar, and the pressure reduction device reduces the pressure to a maximum pressure on the downstream side of 200 bar.
  • the gas extraction valve 1 shown serves to extract compressed gas from a - here only indicated - compressed gas cylinder 2.
  • the gas extraction valve has a valve body 3 with a connection section 4, which is, for example, a screw-in socket provided with an external thread, and is fastened in a bottle neck 5 of the compressed gas cylinder 2.
  • Two extraction nozzles 6, 7 are arranged on the valve body 3.
  • Two gas channels 8, 9 extend through the valve body 3.
  • a first gas channel 8 extends from a first inlet opening 11 in an upstream end face 12 in the connection section 4 through the valve body 3 to the first extraction nozzle 6.
  • the first gas channel 8 can be opened and closed by means of a shut-off valve 13.
  • the shut-off valve 13 is constructed in a manner known per se and comprises - not shown here - a closing group for continuously adjusting the flow through the gas channel 8 and a handwheel 14 for manually operating the closing group.
  • a second gas channel 9 extends in the embodiment to Fig.1 from a second inlet opening 15 through the connection section 4 and the valve body 3 to the second extraction nozzle 7.
  • the gas channel 9 can also be opened and closed by means of a shut-off valve 16, which is equipped with a handwheel 17.
  • the shut-off valves 13, 16 can be operated independently of one another and are arranged on the valve in such a way that both handwheels 14, 17 can be operated manually without any problems.
  • a pressure reducer 18 is also arranged in the gas channel 9.
  • the pressure reducer 18 is a valve which reduces the pressure in the gas channel 9 from the pressure on the inlet side, which corresponds to the filling pressure of the compressed gas cylinder 2, to a fixed pressure on the outlet side or a pressure reduced by a factor.
  • the gas extraction valve 20 shown differs from the gas extraction valve 1 only in the arrangement of the extraction nozzles and shut-off valves on the valve body. Otherwise, components with the same effect are designated with the same reference numerals as in the embodiment according to Fig.1 .
  • the gas extraction valve 20 has a valve body 21 through which gas channels 8, 9 are led, which are opened and closed by means of shut-off valves 22, 23.
  • the shut-off valves 22, 23 are equipped with handwheels 24, 25, which are arranged on opposite sides of the valve body 21.
  • the gas channels 8, 9 open into extraction nozzles 26, 27, which are arranged on the valve body 21 axially offset from a longitudinal axis 28 of the gas extraction valve 20 and rotated against each other by an angle of, for example, 90°. In this way, a particularly slim design and easy extraction of gas from the pressure vessel 2 is achieved.
  • the gas extraction valve 30 shown differs from the gas extraction valve 1 only in that the gas channels 8, 9 do not open into separate inlet openings in the upstream end face 12 of the connection section 4, but are brought together at a branching point 32 within the valve body 31 of the gas extraction valve 30 and open into a common gas channel 33 at a common inlet opening 34. In this way, it is particularly avoided to provide two gas channels running parallel to one another in the area of the connection section 4.
  • the gas extraction valves 1, 20, 30 enable gas to be extracted from the compressed gas cylinder 2 at different pressures: On the one hand, extraction takes place via gas channel 8 at a pressure corresponding to the filling pressure of the compressed gas cylinder 2.
  • the compressed gas cylinder 2 is also refilled via the gas channel 8.
  • gas can be extracted via the gas channel 9, namely at the pressure value fixed by the pressure reducer 18 or reduced by a predetermined factor.
  • the filling pressure of the compressed gas cylinder 2 is 300 bar and the pressure value set on the pressure reducer 18 is 200 bar. Gas can therefore be extracted from the compressed gas cylinder 2 at both 300 bar and 200 bar without the need for an additional reducing valve.
  • the extraction nozzles 7, 27 are preferably each provided with different adapters, which make it impossible to connect a consumer or a gas line with a pressure value that does not correspond to the extraction pressure at the extraction nozzles 6, 7; 26, 27.
  • residual pressure valves or residual pressure cassettes can be provided in the extraction nozzles 6, 7, 26, 27, by means of which it is ensured that the compressed gas cylinder 2 can only be emptied by the customer down to a predetermined residual pressure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Description

Die Erfindung betrifft eine Druckgasflasche mit einem Gasentnahmeventil.The invention relates to a compressed gas cylinder with a gas extraction valve.

Eine solche Druckgasflasche ist aus CA2975057A1 bekannt.Such a compressed gas cylinder is made of CA2975057A1 known.

Derartige Gasentnahmeventile, auch Flaschenventile genannt, werden üblicherweise unmittelbar mit dem Korpus einer Druckgasflasche verbunden, beispielsweise in ein am Hals der Druckgasflasche vorhandenes Gewinde eingeschraubt. Üblicherweise weisen sie einen Entnahmestutzen zum Anschließen eines Verbrauchers oder zum Verbinden mit einem Versorgungsnetz eines Kunden auf und können mittels eines Handrads manuell geöffnet oder geschlossen werden.Such gas extraction valves, also called cylinder valves, are usually connected directly to the body of a compressed gas cylinder, for example screwed into a thread on the neck of the compressed gas cylinder. They usually have an extraction nozzle for connecting a consumer or for connecting to a customer's supply network and can be opened or closed manually using a handwheel.

Als " Druckgasflaschen" sollen im Rahmen der vorliegenden Erfindung ortsbewegliche Behälter verstanden werden, die mit Druckgasen gefüllt und nach dem Füllen zur Entnahme der Druckgase an einen anderen Ort verbracht werden. Insbesondere sollen damit transportable Behälter verstanden werden, die ein Volumen von 0,5 I bis 150 I besitzen und für einen Betriebsüberdruck von mehr als 10 bar ausgelegt sind. Druckgasflaschen sind insbesondere aus Stahl, Aluminium oder einem Verbundwerkstoff gefertigt.In the context of the present invention, "compressed gas cylinders" are to be understood as mobile containers that are filled with compressed gases and, after filling, are taken to another location to remove the compressed gases. In particular, this is to be understood as transportable containers that have a volume of 0.5 l to 150 l and are designed for an operating pressure of more than 10 bar. Compressed gas cylinders are made in particular from steel, aluminum or a composite material.

Moderne Druckgasflaschen können heute mit einem Standarddruck von 300 bar befüllt werden (Derartige Druckgasflaschen werden im Folgenden auch als "300bar-Druckgasflasche" bezeichnet). Jedoch sind noch viele Apparate und kundenseitige Gasversorgungsnetze im Einsatz, die auf einen Maximaldruck von lediglich 200 bar ausgelegt sind. Um solche Kunden mit Gas versorgen zu können, muss entweder ein zusätzliches Druckreduzierventil zwischen Druckgasflasche und Verbraucher zwischengeschaltet werden, was allerdings einen beträchtlichen Aufwand an Material und Arbeitszeit mit sich bringt und überdies die Störanfälligkeit der Gasversorgung erhöht, oder die an solche Kunden ausgelieferten Druckgasflaschen werden nur bis zu einem Druck von 200 bar befüllt, was wiederum einen erhöhten Aufwand in der Flaschenlogistik des Gasversorgers zur Folge hat.Modern compressed gas cylinders can now be filled with a standard pressure of 300 bar (such compressed gas cylinders are also referred to below as "300 bar compressed gas cylinders"). However, there are still many devices and customer-side gas supply networks in use that are designed for a maximum pressure of only 200 bar. In order to be able to supply such customers with gas, either an additional pressure reducing valve must be installed between the compressed gas cylinder and the consumer, which, however, entails considerable expenditure in terms of material and working time and also increases the susceptibility of the gas supply to failure, or the compressed gas cylinders delivered to such customers are only filled up to a pressure of 200 bar, which in turn results in increased expenditure in the cylinder logistics of the gas supplier.

Es hat daher bereits Versuche gegeben, Kunden, deren Verbraucher bzw. deren Gasversorgungsnetz auf maximal 200 bar ausgelegt sind, mit einem verringerten logistischen oder materialtechnischen Aufwand mit 300 bar - Druckgasflaschen oder 300 bar - Druckgasflaschenbündeln beliefern zu können.Attempts have therefore already been made to provide customers whose consumers or gas supply networks are designed for a maximum of 200 bar with a reduced to be able to supply 300 bar compressed gas cylinders or 300 bar compressed gas cylinder bundles without any logistical or material-technical effort.

So ist beispielsweise aus der EP 2 686 602 B1 ein Druckgasflaschenbündel bekannt geworden, dessen Rohrleitungssystem mit zwei Anschlüssen versehen ist, wobei an einem Anschluss Gas mit dem Fülldruck des Druckgasflaschenbündels von bis zu 300bar entnommen werden kann und der zweite Anschluss mit einem integrierten Druckminderer ausgerüstet ist, der nur die Entnahme von Gas mit einem Druck von maximal 200 bar erlaubt. Diese Anordnung hat sich bei Druckgasflaschenbündeln bewährt, ist allerdings auf die Entnahme von Gas aus einzelnen Druckgasflaschen nicht anwendbar.For example, the EP 2 686 602 B1 A compressed gas cylinder bundle has become known whose piping system is equipped with two connections, whereby gas can be extracted from one connection with the filling pressure of the compressed gas cylinder bundle of up to 300 bar and the second connection is equipped with an integrated pressure reducer that only allows the extraction of gas with a maximum pressure of 200 bar. This arrangement has proven itself with compressed gas cylinder bundles, but is not applicable to the extraction of gas from individual compressed gas cylinders.

Bekannt sind auch Druckminderer, die in das Flaschenventil integriert sind und mittels denen der Druck in einer für 300 bar konzipierten Druckgasflasche auf einen Betriebsdruck eines Verbrauchers oder Gasversorgungssystems reduziert werden kann. Allerdings kann dann die Druckgasflasche nicht mehr erneut mit 300 bar befüllt werden, oder es muss dafür Sorge getragen werden, dass geeignete Mechanismen vorgesehen sind, die ein Befüllen der mit dem Flaschenventil ausgerüsteten Druckgasflasche mit 300 bar ermöglichen.Pressure reducers are also known that are integrated into the cylinder valve and can be used to reduce the pressure in a compressed gas cylinder designed for 300 bar to the operating pressure of a consumer or gas supply system. However, the compressed gas cylinder can then no longer be refilled with 300 bar, or it must be ensured that suitable mechanisms are provided that enable the compressed gas cylinder equipped with the cylinder valve to be filled with 300 bar.

Beispiele hierfür werden in der EP 0 395 283 A1 und der EP 0 774 703 A1 beschrieben. Diese Dokumente betreffen Flaschenventile für 300 bar-Druckgasflaschen, die mit einem eingebauten Druckminderer ausgerüstet sind und im normalen Betriebszustand einen maximalen Ausgabedruck von 200 bar liefern. Zum Befüllen der Druckgasflasche ist eine spezieller Hochdruckanschluss erforderlich, der mit einen in das Ventil einführbaren Vorderabschnitt ausgerüstet und dadurch in der Lage ist, die Druckminderung im Ventil aufzuheben und so die Befüllung der Druckgasflasche bis zu ihrem maximalen Druck von 300 bar zu ermöglichen. Diese Ventilanordnungen sind allerdings recht aufwändig im Aufbau und benötigen zum Füllen der Druckgasflasche zusätzliche Ausrüstungen, die möglicherweise nicht immer zur Verfügung stehen.Examples of this are given in the EP 0 395 283 A1 and the EP 0 774 703 A1 These documents concern cylinder valves for 300 bar compressed gas cylinders which are equipped with a built-in pressure reducer and which, in normal operating conditions, deliver a maximum output pressure of 200 bar. To fill the compressed gas cylinder, a special high-pressure connection is required which is equipped with a front section which can be inserted into the valve and is thus able to cancel the pressure reduction in the valve and thus enable the compressed gas cylinder to be filled up to its maximum pressure of 300 bar. However, these valve arrangements are quite complex in construction and require additional equipment to fill the compressed gas cylinder, which may not always be available.

Ein in ein Druckgasflaschenventil integrierter Druckminderer ist auch aus der DE 100 45 120 A1 bekannt. Bei diesem Gegenstand kann die die Druckminderung im Druckminderer bewirkende Federspannung variabel eingestellt oder ganz aufgehoben werden, wodurch die Befüllung und die Entnahme aus der Druckgasflasche bei unterschiedlichen Drücken erfolgen kann. Es ist somit bei diesem Gegenstand erforderlich, den Arbeitsdruck des Flaschenventils der jeweiligen Aufgabe manuell anzupassen, was jedoch eine beträchtliche Gefahr von Bedienungsfehlern birgt.A pressure reducer integrated into a compressed gas cylinder valve is also available from EN 100 45 120 A1 known. In this case, the pressure reduction in the The spring tension of the pressure reducer can be variably adjusted or removed completely, meaning that filling and removal from the compressed gas cylinder can take place at different pressures. This means that the working pressure of the cylinder valve must be manually adjusted to the respective task, which, however, carries a considerable risk of operating errors.

Der Erfindung liegt somit die Aufgabe zu Grunde, eine Druckgasflasche mit einem Gasentnahmeventil zu schaffen, die einfach im Aufbau ist und eine sichere Entnahme von Gas bei unterschiedlichen Drücken ermöglicht.The invention is therefore based on the object of creating a compressed gas cylinder with a gas extraction valve which is simple in construction and enables safe extraction of gas at different pressures.

Gelöst ist diese Aufgabe mit einer Druckgasflasche mit den Merkmalen des Patentanspruchs 1. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen angegeben.This object is achieved with a compressed gas cylinder having the features of patent claim 1. Advantageous embodiments are specified in the subclaims.

Eine erfindungsgemässe Druckgasflasche mit einem Gasentnahmeventil weist also einen Ventilkörper auf, der in an sich üblicher Weise mit einem Anschlussabschnitt zum Verbinden mit einer Druckgasflasche ausgerüstet ist. Beispielsweise weist der Anschlussabschnitt ein Außengewinde zum Einschrauben in ein am Flaschenhals einer Druckgasflasche vorhandenes Innengewinde auf. Durch den Ventilkörper sind zwei Gaskanäle hindurchgeführt. Ein erster Gaskanal erstreckt sich von einer Eintrittsöffnung, die in einer anströmseitigen Stirnfläche des Anschlussabschnitts angeordnet ist, also auf einer im Einbauzustand dem Innenraum der Druckgasflasche zugewandten Stirnfläche des Ventilkörpers, durch den Ventilkörper hindurch bis zu einem ersten Entnahmestutzen. Über diesen ersten Gaskanal erfolgt die Entnahme von Gas mit dem in der Druckgasflasche herrschenden Fülldruck. Ebenso erfolgt über den ersten Gaskanal die Befüllung der Druckgasflasche. Weiterhin ist ein zweiter Gaskanal vorhanden, der vom ersten Gaskanal abzweigt oder in einer in der anströmseitigen Stirnfläche des Anschlussabschnitts angeordneten zweiten Eintrittsöffnung einmündet und bis zu einem zweiten Entnahmestutzen durch den Ventilkörper hindurchgeführt ist. Beide Gaskanäle sind jeweils mit einer Sperrarmatur ausgerüstet, mittels der der Gaskanal unabhängig vom anderen Gaskanal manuell oder motorgetrieben geöffnet und geschlossen werden kann. Zusätzlich ist im zweiten Gaskanal eine Einrichtung zur Druckminderung vorgesehen. Die Einrichtung zur Druckminderung reduziert den Druck im zweiten Gaskanal auf einen vorgegebenen Druckwert oder um einen vorgegebenen Faktor. Beispielsweise beträgt der Fülldruck in der Druckgasflasche 300bar und der Druckwert abströmseitig zum Druckminderer 200bar. Das erfindungsgemäße Gasentnahmeventil ermöglicht also die Entnahme von Gas bei zwei unterschiedlichen Drücken, ohne dass es erforderlich wäre, zum Anschließen an ein Gasversorgungsnetz, welches auf einen geringeren Betriebsdruck als der Fülldruck der Druckgasflasche zugelassen ist, abströmseitig zum Gasentnahmeventil ein zusätzliches Ventil zur Druckreduzierung einzubauen.A compressed gas cylinder according to the invention with a gas extraction valve therefore has a valve body which is equipped in a conventional manner with a connection section for connection to a compressed gas cylinder. For example, the connection section has an external thread for screwing into an internal thread on the neck of a compressed gas cylinder. Two gas channels are led through the valve body. A first gas channel extends from an inlet opening which is arranged in an upstream end face of the connection section, i.e. on an end face of the valve body which, when installed, faces the interior of the compressed gas cylinder, through the valve body to a first extraction nozzle. Gas is extracted via this first gas channel at the filling pressure prevailing in the compressed gas cylinder. The compressed gas cylinder is also filled via the first gas channel. There is also a second gas channel which branches off from the first gas channel or opens into a second inlet opening arranged in the upstream end face of the connection section and is led through the valve body to a second extraction nozzle. Both gas channels are each equipped with a shut-off valve, by means of which the gas channel can be opened and closed independently of the other gas channel, either manually or by motor. In addition, a device for reducing the pressure is provided in the second gas channel. The device to reduce the pressure reduces the pressure in the second gas channel to a predetermined pressure value or by a predetermined factor. For example, the filling pressure in the compressed gas cylinder is 300 bar and the pressure value downstream of the pressure reducer is 200 bar. The gas extraction valve according to the invention therefore enables gas to be extracted at two different pressures without it being necessary to install an additional pressure reduction valve downstream of the gas extraction valve for connection to a gas supply network which is approved for a lower operating pressure than the filling pressure of the compressed gas cylinder.

Eine vorteilhafte Ausgestaltung sieht vor, dass der erste Gaskanal und der zweite Gaskanal an einer gemeinsamen Eintrittsöffnung in der anströmseitigen Stirnfläche ausmünden. Die beiden Gaskanäle gehen also an einer Verzweigungsstelle, die anströmseitung zu den Sperrarmaturen und dem Druckminderer angeordnet ist, in einen gemeinsamen Gaskanal über, der in der gemeinsamen Eintrittsöffnung ausmündet. Dadurch kann insbesondere im Bereich des Anschlussabschnitts, der in der Regel nur eine geringe Weite aufweist, auf das Einbohren zweier paralleler Gaskanäle in den Ventilkörper verzichtet werden.An advantageous embodiment provides that the first gas channel and the second gas channel open out at a common inlet opening in the upstream face. The two gas channels thus merge into a common gas channel at a branching point, which is arranged on the upstream side of the shut-off valves and the pressure reducer, which opens out at the common inlet opening. This means that drilling two parallel gas channels into the valve body is not necessary, particularly in the area of the connection section, which is usually only small.

Um die manuelle Handhabung des Gasentnahmeventils zu erleichtern ist es vorteilhaft, wenn der erste Entnahmestutzen und der zweite Entnahmestutzen auf gegenüberliegenden Seiten des Ventilkörpers angeordnet sind.In order to facilitate manual handling of the gas extraction valve, it is advantageous if the first extraction nozzle and the second extraction nozzle are arranged on opposite sides of the valve body.

Ebenso vorteilhaft ist es, wenn der erste Entnahmestutzen und der zweite Entnahmestutzen axial zueinander versetzt gegenüber einer Längsachse des Ventilkörpers am Ventilkörper angeordnet sind. Im Einbauzustand an einer Druckgasflasche münden damit die beiden Entnahmestutzen in unterschiedlichen Abständen zum Hals der Druckgasflasche aus.It is also advantageous if the first extraction nozzle and the second extraction nozzle are arranged axially offset from one another on the valve body relative to a longitudinal axis of the valve body. When installed on a compressed gas cylinder, the two extraction nozzles therefore open out at different distances from the neck of the compressed gas cylinder.

Eine abermals zweckmäßige Ausführungsform der Erfindung ist dadurch gekennzeichnet, dass der Ventilkörper im wesentlichen T-förmig ausgebildet ist, wobei der erste Entnahmestutzen und der zweite Entnahmestutzen an den beiden Schenkeln des T-förmigen Ventilkörpers angeordnet sind.Another expedient embodiment of the invention is characterized in that the valve body is essentially T-shaped, wherein the first extraction nozzle and the second extraction nozzle are arranged on the two legs of the T-shaped valve body.

Bevorzugt ist in den Entnahmestutzen jeweils ein Restdruckventil (auch "Restdruckkassette" genannt) vorgesehen, mittels dem sichergestellt wird, dass die Druckgasflasche von einem Kunden nicht völlig entleert werden kann.Preferably, a residual pressure valve (also called a "residual pressure cassette") is provided in each of the extraction nozzles to ensure that the compressed gas cylinder cannot be completely emptied by a customer.

Das erfindungsgemäße Flaschenventil eignet sich grundsätzlich für alle Druckgasflaschen gemäß der eingangs genannten Definition. Eine besonders vorteilhafte Ausgestaltung der Erfindung sieht jedoch vor, dass die Entnahmedrücke an den beiden Entnahmestutzen gebräuchlichen Standards heutiger Apparate oder Gasversorgungsnetzen entsprechen. Insbesondere ist das Gasentnahmeventil für einen Fülldruck in der Druckgasflasche, und damit auch der bevorzugte Entnahmedruck am ersten Entnahmestutzen, von 300 bar ausgelegt, und die Einrichtung zur Druckminderung reduziert den Druck auf auf einen abströmseitigen Höchstdruck von 200 bar.The cylinder valve according to the invention is basically suitable for all compressed gas cylinders according to the definition mentioned at the beginning. However, a particularly advantageous embodiment of the invention provides that the extraction pressures at the two extraction nozzles correspond to the usual standards of today's devices or gas supply networks. In particular, the gas extraction valve is designed for a filling pressure in the compressed gas cylinder, and thus also the preferred extraction pressure at the first extraction nozzle, of 300 bar, and the pressure reduction device reduces the pressure to a maximum pressure on the downstream side of 200 bar.

Anhand der Zeichnungen sollen Ausführungsbeispiele der Erfindung näher erläutert werden. In schematischen Ansichten zeigen:

Fig. 1:
Eine erfindungsgemäßes Gasentnahmeventil in einer ersten Ausführungsform,
Fig. 2:
Eine erfindungsgemäßes Gasentnahmeventil in einer zweiten Ausführungsform,
Fig. 3:
Ein Gasentnahmeventil.
Embodiments of the invention will be explained in more detail with reference to the drawings. Schematic views show:
Fig.1:
A gas extraction valve according to the invention in a first embodiment,
Fig. 2:
A gas extraction valve according to the invention in a second embodiment,
Fig. 3:
A gas extraction valve.

Das in Fig. 1 gezeigte Gasentnahmeventil 1 dient zur Entnahme von komprimiertem Gas aus einer - hier nur angedeuteten - Druckgasflasche 2. Das Gasentnahmeventil besitzt einen Ventilkörper 3 mit einem Anschlussabschnitt 4, bei dem es sich beispielsweise um einen mit einem Außengewinde versehenen Einschraubstutzen handelt, und ist in einem Flaschenhals 5 der Druckgasflasche 2 befestigt.This in Fig.1 The gas extraction valve 1 shown serves to extract compressed gas from a - here only indicated - compressed gas cylinder 2. The gas extraction valve has a valve body 3 with a connection section 4, which is, for example, a screw-in socket provided with an external thread, and is fastened in a bottle neck 5 of the compressed gas cylinder 2.

Am Ventilkörper 3 sind zwei Entnahmestutzen 6, 7 angeordnet. Durch den Ventilkörper 3 hindurch erstrecken sich zwei Gaskanäle 8, 9. Ein erster Gaskanal 8 erstreckt sich dabei von einer ersten Eintrittsöffnung 11 in einer anströmseitigen Stirnfläche 12 im Anschlussabschnitt 4 durch den Ventilkörper 3 hindurch bis zum ersten Entnahmestutzen 6. Der erste Gaskanal 8 kann mittels einer Sperrarmatur 13 geöffnet und geschlossen werden. Die Sperrarmatur 13 ist in an sich bekannter Weise aufgebaut und umfasst - hier nicht gezeigt - eine Schließgruppe zum kontinuierlichen Einstellen des Durchflusses durch den Gaskanal 8 und ein Handrad 14 zum manuellen Betätigen der Schließgruppe.Two extraction nozzles 6, 7 are arranged on the valve body 3. Two gas channels 8, 9 extend through the valve body 3. A first gas channel 8 extends from a first inlet opening 11 in an upstream end face 12 in the connection section 4 through the valve body 3 to the first extraction nozzle 6. The first gas channel 8 can be opened and closed by means of a shut-off valve 13. The shut-off valve 13 is constructed in a manner known per se and comprises - not shown here - a closing group for continuously adjusting the flow through the gas channel 8 and a handwheel 14 for manually operating the closing group.

Ein zweiter Gaskanal 9 erstreckt sich im Ausführungsbeispiel nach Fig. 1 von einer zweiten Eintrittsöffnung 15 durch den Anschlussabschnitt 4 und den Ventilkörper 3 hindurch zum zweiten Entnahmestutzen 7. Auch der Gaskanal 9 kann mittels einer Sperrarmatur 16, die mit einem Handrad 17 ausgerüstet ist, geöffnet und geschlossen werden. Die Sperrarmaturen 13, 16 sind unabhängig voneinander betätigbar und so am Ventil angeordnet, dass eine problemlose manuelle Betätigung beider Handräder 14, 17 möglich ist. Weiterhin ist im Gaskanal 9 ein Druckminderer 18 angeordnet. Beim Druckminderer 18 handelt es sich um eine Armatur, die den Druck in dem Gaskanal 9 vom eingangsseitigen, dem Fülldruck der Druckgasflasche 2 entsprechenden Druck auf einen fest vorgegebenen oder um einen Faktor verminderten ausgangsseitigen Druck reduziert.A second gas channel 9 extends in the embodiment to Fig.1 from a second inlet opening 15 through the connection section 4 and the valve body 3 to the second extraction nozzle 7. The gas channel 9 can also be opened and closed by means of a shut-off valve 16, which is equipped with a handwheel 17. The shut-off valves 13, 16 can be operated independently of one another and are arranged on the valve in such a way that both handwheels 14, 17 can be operated manually without any problems. A pressure reducer 18 is also arranged in the gas channel 9. The pressure reducer 18 is a valve which reduces the pressure in the gas channel 9 from the pressure on the inlet side, which corresponds to the filling pressure of the compressed gas cylinder 2, to a fixed pressure on the outlet side or a pressure reduced by a factor.

Das in Fig. 2 gezeigte Gasentnahmeventil 20 unterscheidet sich vom Gasentnahmeventil 1 lediglich in der Anordnung der Entnahmestutzen und Sperrventile am Ventilkörper. Im Übrigen gleich wirkende Bestandteile werden mit dem gleichen Bezugszeichen bezeichnet wie beim Ausführungsbeispiel nach Fig. 1.This in Fig.2 The gas extraction valve 20 shown differs from the gas extraction valve 1 only in the arrangement of the extraction nozzles and shut-off valves on the valve body. Otherwise, components with the same effect are designated with the same reference numerals as in the embodiment according to Fig.1 .

Das Gasentnahmeventil 20 weist einen Ventilkörper 21 auf, durch den Gaskanäle 8, 9 hindurchgeführt sind, die mittels Sperrarmaturen 22, 23 geöffnet bzw. geschlossen werden. Die Sperrarmaturen 22, 23 sind mit Handrädern 24, 25 ausgerüstet, die jeweils auf gegenüberliegenden Seiten des Ventilkörpers 21 angeordnet sind. Weiterhin münden die Gaskanäle 8, 9 in Entnahmestutzen 26, 27 aus, die gegenüber einer Längsachse 28 des Gasentnahmeventils 20 axial versetzt und um einen Winkel von beispielsweise 90° gegeneinander gedreht am Ventilkörper 21 angeordnet sind. Auf diese Weise wird eine besonders schlanke Bauform und eine leichte Entnahmemöglichkeit von Gas aus dem Druckbehälter 2 erreicht.The gas extraction valve 20 has a valve body 21 through which gas channels 8, 9 are led, which are opened and closed by means of shut-off valves 22, 23. The shut-off valves 22, 23 are equipped with handwheels 24, 25, which are arranged on opposite sides of the valve body 21. Furthermore, the gas channels 8, 9 open into extraction nozzles 26, 27, which are arranged on the valve body 21 axially offset from a longitudinal axis 28 of the gas extraction valve 20 and rotated against each other by an angle of, for example, 90°. In this way, a particularly slim design and easy extraction of gas from the pressure vessel 2 is achieved.

Das in Fig. 3 gezeigte Gasentnahmeventil 30 unterscheidet sich vom Gasentnahmeventil 1 lediglich dadurch, dass die Gaskanäle 8, 9 nicht in separaten Eintrittsöffnungen in der anströmseitigen Stirnfläche 12 des Anschlussabschnitts 4 einmünden, sondern innerhalb des Ventilkörpers 31 des Gasentnahmeventils 30 an einer Verzweigungsstelle 32 zusammengeführt sind und mit einem gemeinsamen Gaskanal 33 an einer gemeinsamen Eintrittsöffnung 34 einmünden. Auf diese Weise wird insbesondere vermieden, im Bereich des Anschlussabschnitts 4 zwei parallel zueinander verlaufende Gaskanäle vorzusehen.This in Fig.3 The gas extraction valve 30 shown differs from the gas extraction valve 1 only in that the gas channels 8, 9 do not open into separate inlet openings in the upstream end face 12 of the connection section 4, but are brought together at a branching point 32 within the valve body 31 of the gas extraction valve 30 and open into a common gas channel 33 at a common inlet opening 34. In this way, it is particularly avoided to provide two gas channels running parallel to one another in the area of the connection section 4.

Die Gasentnahmeventile 1, 20, 30 ermöglichen die Entnahme von Gas aus der Druckgasflasche 2 bei unterschiedlichen Drücken: Zum einen erfolgt die Entnahme über Gaskanal 8 bei einem dem Fülldruck der Druckgasflasche 2 entsprechenden Druck. Über den Gaskanal 8 erfolgt auch eine Wiederbefüllung der Druckgasflasche 2. Zum anderen kann eine Entnahme von Gas über den Gaskanal 9 erfolgen, und zwar bei dem durch den Druckminderer 18 fest eingestellten bzw. um einen vorgegebenen Faktor reduzierten Druckwert. Beispielsweise beträgt bei der Druckgasflasche 2 der Fülldruck 300 bar, und der eingestellte Druckwert am Druckminderer 18 beträgt 200 bar. Somit kann aus der Druckgasflasche 2 die Entnahme von Gas sowohl bei 300 bar als auch bei 200 bar erfolgen, ohne dass es der Zwischenschaltung eines zusätzlichen Reduzierventils bedarf. Die Entnahmestutzen 7, 27 sind bevorzugt jeweils mit unterschiedlichen Adaptern versehen, mit denen ein Anschluss eines Verbrauchers bzw. einer Gasleitung mit einem nicht dem Entnahmedruck an den Entnahmestutzen 6, 7; 26, 27 entsprechenden Druckwert unmöglich machen.The gas extraction valves 1, 20, 30 enable gas to be extracted from the compressed gas cylinder 2 at different pressures: On the one hand, extraction takes place via gas channel 8 at a pressure corresponding to the filling pressure of the compressed gas cylinder 2. The compressed gas cylinder 2 is also refilled via the gas channel 8. On the other hand, gas can be extracted via the gas channel 9, namely at the pressure value fixed by the pressure reducer 18 or reduced by a predetermined factor. For example, the filling pressure of the compressed gas cylinder 2 is 300 bar and the pressure value set on the pressure reducer 18 is 200 bar. Gas can therefore be extracted from the compressed gas cylinder 2 at both 300 bar and 200 bar without the need for an additional reducing valve. The extraction nozzles 7, 27 are preferably each provided with different adapters, which make it impossible to connect a consumer or a gas line with a pressure value that does not correspond to the extraction pressure at the extraction nozzles 6, 7; 26, 27.

Im Übrigen können in den Entnahmestutzen 6, 7, 26, 27 (hier nicht gezeigte) Restdruckventile oder Restdruckkassetten vorgesehen werden, mittels denen sichergestellt wird, dass die Druckgasflasche 2 kundenseitig nur bis zu einem vorgegebenen Restdruck entleert werden kann.Furthermore, residual pressure valves or residual pressure cassettes (not shown here) can be provided in the extraction nozzles 6, 7, 26, 27, by means of which it is ensured that the compressed gas cylinder 2 can only be emptied by the customer down to a predetermined residual pressure.

BezugszeichenlisteList of reference symbols

11
GasentnahmeventilGas extraction valve
22
DruckgasflascheCompressed gas cylinder
33
VentilkörperValve body
44
AnschlussabschnittConnection section
55
FlaschenhalsBottleneck
66
EntnahmestutzenExtraction nozzle
77
EntnahmestutzenExtraction nozzle
88th
GaskanalGas channel
99
GaskanalGas channel
1010
--
1111
EintrittsöffnungEntrance opening
1212
StirnflächeFrontal area
1313
SperrarmaturLocking valve
1414
HandradHandwheel
1515
EintrittsöffnungEntrance opening
1616
SperrarmaturLocking valve
1717
HandradHandwheel
1818
DruckmindererPressure reducer
1919
--
2020
GasentnahmeventilGas extraction valve
2121
VentilkörperValve body
2222
SperrarmaturLocking valve
2323
SperrarmaturLocking valve
2424
HandradHandwheel
2525
HandradHandwheel
2626
EntnahmestutzenExtraction nozzle
2727
EntnahmestutzenExtraction nozzle
2828
LängsachseLongitudinal axis
2929
--
3030
GasentnahmeventilGas extraction valve
3131
VentilkörperValve body
3232
VerzweigungspunktBranch point
3333
Gemeinsamer GaskanalCommon gas channel
3434
EintrittsöffnungEntrance opening

Claims (6)

  1. Compressed gas cylinder having a gas retrieval valve which is equipped with a valve unit (3, 21, 31) having a connecting portion (4) for connecting to a body of the compressed gas cylinder (2); a first gas duct (8) which extends from a first entry opening (11, 33), disposed on an inflow-proximal end face (12) of the connecting portion (4) that faces the interior of the compressed gas cylinder (2), to a first retrieval port (6, 26), and a second gas duct (9) which extends from a second entry opening (15), disposed on the inflow-proximal end face (12) of the connecting portion (4), to a second retrieval port (7, 27) leading through said valve unit (3, 21, 31) ; wherein the first gas duct (8) is specified for" retrieving gas from the compressed gas cylinder (2) at the filling pressure prevalent in the compressed gas cylinder (2), and the second gas duct (9) is specified for retrieving gas from the compressed gas cylinder (2) at a pressure reduced in comparison to the filling pressure, and wherein a blocking fitting (13, 16, 22, 23) for opening or blocking the first gas duct (8) and the second gas duct (9) is in each case provided, and the second gas duct (9) is equipped with a device (18) for pressure reduction.
  2. Compressed gas cylinder having a gas retrieval valve according to Claim 1, characterized in that the first retrieval port (6, 26) and the second retrieval port (7, 27) are disposed on mutually opposite sides of the valve unit (3, 21, 31).
  3. Compressed gas cylinder having a gas retrieval valve according to one of the preceding claims, characterized in that the first retrieval port (6 26) and the second retrieval port (7, 27) are disposed on the valve unit (3, 21, 31) so as to be axially offset from one another in terms of a longitudinal axis of the valve unit (3, 21, 32) .
  4. Compressed air cylinder having a gas retrieval valve according to one of the preceding claims, characterized in that the valve unit (3, 31) is designed to be substantially T-shaped, wherein the first retrieval port (6, 26) and the second retrieval port (7, 27) are disposed on the two legs of the T-shaped valve unit (3, 31).
  5. Compressed gas cylinder having a gas retrieval valve according to one of the preceding claims, characterized in that a residual pressure valve is provided in each of the retrieval ports (6, 7, 26, 27).
  6. Compressed gas cylinder having a gas retrieval valve according to one of the preceding claims, characterized in that the gas retrieval valve (1, 20, 30) is conceived for a filling pressure in the compressed gas .cylinder (2) of approximately 300 bar, and the device for pressure reduction (18) is conceived for a maximum pressure of 200 bar on the outflow side.
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GB2552784A (en) * 2016-08-02 2018-02-14 Linde Ag A pressurised gas cylinder

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DE102018000890A1 (en) 2019-08-08

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