DE102019216503A1 - Device for determining the consumption of a gas from a gas cylinder which is at least partially filled with gas - Google Patents
Device for determining the consumption of a gas from a gas cylinder which is at least partially filled with gas Download PDFInfo
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- 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
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
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- 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
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
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- 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
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- 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)
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- 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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/013—Carbone dioxide
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- 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
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
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- 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
- F17C2223/035—High pressure (>10 bar)
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- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
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- F17C2250/032—Control means using computers
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- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
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- F17C2250/034—Control means using wireless transmissions
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- 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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0408—Level of content in the vessel
- F17C2250/0417—Level of content in the vessel with electrical means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
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- 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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/043—Pressure
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- 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
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- F17C2250/0439—Temperature
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- 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
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- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0447—Composition; Humidity
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- 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
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- F17C2250/0465—Vibrations, e.g. of acoustic type
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- 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
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- F17C2250/0486—Indicating or measuring characterised by the location
- F17C2250/0491—Parameters measured at or inside the vessel
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- 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
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- F17C2250/06—Controlling or regulating of parameters as output values
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- 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
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- F17C2250/07—Actions triggered by measured parameters
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- 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
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/02—Improving properties related to fluid or fluid transfer
- F17C2260/024—Improving metering
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- 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
- F17C2270/00—Applications
- F17C2270/05—Applications for industrial use
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- 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
- F17C2270/00—Applications
- F17C2270/07—Applications for household use
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Abstract
Es wird eine Vorrichtung (10) zum Ermitteln eines Verbrauchs eines Gases aus einer zumindest teilweise mit Gas (12) gefüllten Gasflasche (14), vorgeschlagen. Die Vorrichtung (10) umfasst eine elektronische Auswerteeinheit (18), einen ersten Sensor (20), der mit einer Gasflasche (14) verbindbar ist und der zum Liefern eines ersten Messsignals an die elektronische Auswerteeinheit (18) ausgebildet ist, und einen zweiten Sensor (22), der mit der Gasflasche (14) verbindbar ist und der zum Liefern eines zweiten Messsignals an die elektronische Auswerteeinheit (18) ausgebildet ist. Der zweite Sensor (22) unterscheidet sich von dem ersten Sensor (20). Die elektronische Auswerteeinheit (18) ist zum Ermitteln eines Verbrauchs des Gases (12) aus der Gasflasche (14) basierend auf dem ersten Messsignal und/oder dem zweiten Messsignal ausgebildet.A device (10) is proposed for determining the consumption of a gas from a gas bottle (14) at least partially filled with gas (12). The device (10) comprises an electronic evaluation unit (18), a first sensor (20) which can be connected to a gas bottle (14) and which is designed to deliver a first measurement signal to the electronic evaluation unit (18), and a second sensor (22) which can be connected to the gas bottle (14) and which is designed to deliver a second measurement signal to the electronic evaluation unit (18). The second sensor (22) differs from the first sensor (20). The electronic evaluation unit (18) is designed to determine the consumption of the gas (12) from the gas cylinder (14) based on the first measurement signal and / or the second measurement signal.
Description
Stand der TechnikState of the art
Die vorliegende Erfindung betrifft eine Vorrichtung zum Ermitteln eines Verbrauchs eines Gases aus einer zumindest teilweise mit Gas gefüllten Gasflasche. Derartige Gasflaschen finden in vielfältigen technischen Gebieten Anwendung, aber auch im Bereich der Industrie- und Haushaltstechnik, wie beispielsweise in CO2-Trinkwassersprudlern. Grundsätzlich ist der Einsatz solcher Vorrichtungen auch in anderen Einsatzgebieten denkbar.The present invention relates to a device for determining the consumption of a gas from a gas cylinder which is at least partially filled with gas. Such gas cylinders are used in a wide variety of technical fields, but also in the field of industrial and household technology, such as, for example, in CO 2 sparkling water. In principle, the use of such devices is also conceivable in other areas of application.
Aus dem Stand der Technik ist es bekannt, dass über den Verbrauch des Gases aus einer Gasflasche für Flüssiggas durch einzelne Messmethoden wie beispielsweise der Messung des Füllstandes der Flüssigkeit in der Gasflasche, der Messung des Gasdruckes in der Gasflasche oder der Messung des Gewichtes der Gasflasche Informationen gewonnen werden können.From the prior art it is known that information about the consumption of the gas from a gas cylinder for liquid gas by individual measurement methods such as measuring the level of the liquid in the gas cylinder, measuring the gas pressure in the gas cylinder or measuring the weight of the gas cylinder can be won.
Trotz der durch diese Messmethoden bewirkten Vorteile besteht nach wie vor ein Verbesserungsbedarf. So liefern einzelne Messmethoden nur jeweils über bestimmte Zeiträume Informationen zum Gasverbrauch aus einer Gasflasche mit Flüssiggas und können durch externe Effekte wie Temperaturschwankungen verfälscht werden.Despite the advantages brought about by these measurement methods, there is still a need for improvement. For example, individual measurement methods only provide information on gas consumption from a gas cylinder with liquefied gas over certain periods of time and can be falsified by external effects such as temperature fluctuations.
Offenbarung der ErfindungDisclosure of the invention
Es wird daher eine Vorrichtung zum Ermitteln eines Verbrauchs eines Gases aus einer zumindest teilweise mit Gas gefüllten Gasflasche vorgeschlagen, die die oben genannten Nachteile zumindest weitgehend vermeidet und die insbesondere eine zuverlässige und genaue Ermittlung des Gasverbrauchs über die gesamte Dauer von der vollständig mit Flüssiggas gefüllten Gasflasche bis zur leeren Gasflasche mit einem internen Druck auf Umgebungsdruckniveau erlaubt.A device is therefore proposed for determining the consumption of a gas from a gas cylinder at least partially filled with gas, which at least largely avoids the above-mentioned disadvantages and which in particular enables a reliable and accurate determination of the gas consumption over the entire duration of the gas cylinder completely filled with liquid gas until the gas bottle is empty with an internal pressure at ambient pressure level.
Eine erfindungsgemäße Vorrichtung zum Ermitteln eines Verbrauchs eines Gases aus einer zumindest teilweise mit Gas, insbesondere Flüssiggas, gefüllten Gasflasche, umfasst eine elektronische Auswerteeinheit, einen ersten Sensor, der mit einer Gasflasche verbindbar ist und der zum Liefern eines ersten Messsignals an die elektronische Steuereinheit ausgebildet ist, und einen zweiten Sensor, der mit der Gasflasche verbindbar ist und der zum Liefern eines zweiten Messsignals an die elektronische Steuereinheit ausgebildet ist. Der zweite Sensor unterscheidet sich von dem ersten Sensor. Die elektronische Auswerteeinheit ist zum Ermitteln eines Verbrauchs eines Gases aus der Gasflasche basierend auf dem ersten Messsignal und/oder dem zweiten Messsignal ausgebildet.A device according to the invention for determining the consumption of a gas from a gas bottle at least partially filled with gas, in particular liquid gas, comprises an electronic evaluation unit, a first sensor which can be connected to a gas bottle and which is designed to deliver a first measurement signal to the electronic control unit , and a second sensor which can be connected to the gas bottle and which is designed to supply a second measurement signal to the electronic control unit. The second sensor is different from the first sensor. The electronic evaluation unit is designed to determine the consumption of a gas from the gas cylinder based on the first measurement signal and / or the second measurement signal.
Durch den Einsatz von zwei verschiedenen Sensoren gibt es keine Zeiträume während der Nutzung der Gasflasche während denen keine Aussage über den Gasverbrauch getroffen werden kann. Stattdessen lässt sich der Gasverbrauch zuverlässig und genau durch die Plausibilisierung und Auswertung zweier verschiedener Messsignale ermitteln.Due to the use of two different sensors, there are no periods of time during the use of the gas cylinder during which no statement can be made about the gas consumption. Instead, the gas consumption can be determined reliably and precisely through the plausibility check and evaluation of two different measurement signals.
Der zweite Sensor kann sich von dem ersten Sensor hinsichtlich des physikalischen Messprinzips unterscheiden. Durch die Kombination verschiedener Messmethoden kann der Gasverbrauch über die gesamte Dauer von der vollständig mit Flüssiggas gefüllten Gasflasche bis zur leeren Gasflasche mit einem internen Druck auf Umgebungsdruckniveau gemessen werden.The second sensor can differ from the first sensor with regard to the physical measuring principle. By combining different measurement methods, the gas consumption can be measured over the entire duration from the gas bottle completely filled with liquid gas to the empty gas bottle with an internal pressure at ambient pressure level.
Die elektronische Auswerteeinheit kann zum Auswerten des ersten Messsignals und/oder des zweiten Messsignals in Abhängigkeit von einem Zustand des Gases in der Gasflasche ausgebildet sein. Entsprechend kann das Messprinzip an den Zustand des Gases angepasst werden und so die Messgenauigkeit erhöht werden.The electronic evaluation unit can be designed to evaluate the first measurement signal and / or the second measurement signal as a function of a state of the gas in the gas cylinder. Accordingly, the measuring principle can be adapted to the condition of the gas and the measuring accuracy can be increased.
Der erste Sensor und/oder der zweite Sensor kann zum Ermitteln des Zustands des Gases in der Gasflasche ausgebildet sein. Beispielsweise kann einer der Sensoren den Zustand des Gases erfassen, während der andere Sensor den Gasverbrauch erfasst. Dabei können die Sensoren bei einer Änderung des Zustands des Gases gewechselt werden. Somit lassen sich beide Sensoren gleichzeitig betreiben und tragen dazu bei, den Gasverbrauch zuverlässig zu jedem Zeitpunkt zu ermitteln. Beispielsweise liefern eine Füllstandsmessung sowie eine Gewichtsmessung der Gasflasche nur so lange Informationen über den Gasverbrauch, wie Flüssigkeit in der Flasche vorhanden ist. Eine Gasdruckmessung liefert erst Informationen, wenn die Flüssigkeit vollständig verdampft ist und sich ausschließlich Gas in der Flasche befindet. Durch Auswertung des jeweiligen Messsignals lässt sich der Zustand und der Gasverbrauch gleichzeitig erfassen.The first sensor and / or the second sensor can be designed to determine the state of the gas in the gas cylinder. For example, one of the sensors can detect the state of the gas, while the other sensor detects the gas consumption. The sensors can be changed if the state of the gas changes. This means that both sensors can be operated at the same time and help to reliably determine gas consumption at all times. For example, a level measurement and a weight measurement of the gas bottle only provide information about gas consumption as long as there is liquid in the bottle. A gas pressure measurement only provides information when the liquid has completely evaporated and there is only gas in the bottle. By evaluating the respective measurement signal, the condition and gas consumption can be recorded at the same time.
Der erste Sensor und/oder der zweite Sensor kann zum kabelgebundenen oder kabellosen Kommunizieren mit der elektronischen Auswerteeinheit ausgebildet sein. Entsprechend kann die Art der Kommunikation der Sensoren nach Bedarf gewählt werden.The first sensor and / or the second sensor can be designed for wired or wireless communication with the electronic evaluation unit. Accordingly, the type of communication between the sensors can be selected as required.
Der erste Sensor und der zweite Sensor können jeweils ein Sensor sein, der ausgewählt ist aus der Gruppe bestehend aus: Drucksensor, Ultraschallsensor, Gewichtssensor. Denkbar wäre auch die Ausbildung des ersten Sensors und/oder des zweiten Sensors als sogenannter Kombinationssensor aus den genannten Sensortypen, d.h. ein Sensor, der zwei unterschiedliche Messprinzipien vereint.The first sensor and the second sensor can each be a sensor selected from the group consisting of: pressure sensor, ultrasonic sensor, weight sensor. It would also be conceivable to design the first sensor and / or the second sensor as a so-called combination sensor from the named sensor types, i.e. a sensor that combines two different measuring principles.
Das erste Messsignal kann mindestens zwei Messwerte umfassen. Alternativ oder zusätzlich kann das zweite Messsignal mindestens zwei Messwerte umfassen. Die Messwerte sind dabei zu unterschiedlichen Zeitpunkten erfasst. Somit lässt sich der Gasverbrauch ermitteln. Beispielsweise über eine Differenz der Messwerte. So ergibt sich beispielsweise der Gasverbrauch aus einer Differenz eines ersten Messwerts und eines zweiten Messwerts, der zeitlich nach dem ersten Messwert erfasst wurde.The first measurement signal can include at least two measurement values. Alternatively or additionally, the second measurement signal can comprise at least two measurement values. The measured values are recorded at different times. The gas consumption can thus be determined. For example, via a difference in the measured values. For example, the gas consumption results from a difference between a first measured value and a second measured value that was recorded after the first measured value.
Die elektronische Auswerteeinheit kann eine Schnittstelle zum Kommunizieren mit einer externen Datenverarbeitungsvorrichtung aufweisen. Damit lassen sich Informationen über den Gasverbrauch auch an eine räumlich getrennte Datenverarbeitungsvorrichtung übermitteln. Entsprechend erlaubt dies eine Fernabfrage über den Gasverbrauch, was die Benutzerfreundlichkeit erhöht. The electronic evaluation unit can have an interface for communicating with an external data processing device. In this way, information about the gas consumption can also be transmitted to a spatially separate data processing device. Correspondingly, this allows remote inquiries about gas consumption, which increases user-friendliness.
Die Schnittstelle kann zum kabelgebundenen oder kabellosen Kommunizieren mit der externen Datenverarbeitungsvorrichtung ausgebildet sein. Somit kann die Art der Kommunikation nach Bedarf gewählt werden.The interface can be designed for wired or wireless communication with the external data processing device. Thus, the type of communication can be selected as required.
Die Vorrichtung kann weiterhin einen Temperatursensor zum Erfassen einer Temperatur des Gases in der Gasflasche umfassen. Dass zusätzliche Messen der Temperatur des Gases in der Gasflasche erlaubt, temperaturbedingte Schwankungen im Gasdruck erkennen zu können. Aufgrund der thermischen Zustandsgleichung können Änderungen des Gasdruckes durch Temperaturänderungen somit bei der Ermittlung des Gasverbrauches eliminiert werden. Eine Änderung des Gasdruckes kann dann ausschließlich durch Entnahme von Gas aus der Flasche zustande kommen.The device can furthermore comprise a temperature sensor for detecting a temperature of the gas in the gas cylinder. That additional measurement of the temperature of the gas in the gas cylinder enables temperature-related fluctuations in the gas pressure to be recognized. Due to the thermal equation of state, changes in the gas pressure due to temperature changes can thus be eliminated when determining the gas consumption. A change in the gas pressure can then only come about by removing gas from the bottle.
Bei der erfindungsgemäßen Vorrichtung gibt es keine Zeiträume während der Nutzung der Gasflasche während denen keine Aussage über den Gasverbrauch getroffen werden kann. Eine Füllstandsmessung sowie eine Gewichtsmessung der Flasche liefern nur so lange Informationen über den Gasverbrauch, wie Flüssigkeit in der Flasche vorhanden ist. Eine Gasdruckmessung liefert erst Informationen, wenn die Flüssigkeit vollständig verdampft ist und sich ausschließlich Gas in der Flasche befindet. Die vorliegende Erfindung liefert dagegen lückenlos Informationen zum Gasverbrauch. Insbesondere bei Gasen mit hohem Dampfdruck wie CO2 (circa 70 bar) macht der Zustand nach Verbrauch der Flüssigkeit einen hohen Anteil der Gesamtnutzungsdauer aus.In the device according to the invention, there are no periods of time during the use of the gas cylinder during which no statement can be made about the gas consumption. A level measurement and a weight measurement of the bottle only provide information about gas consumption as long as there is liquid in the bottle. A gas pressure measurement only provides information when the liquid has completely evaporated and there is only gas in the bottle. In contrast, the present invention provides complete information on gas consumption. Especially in the case of gases with high vapor pressure such as CO2 (approx. 70 bar), the state after the liquid has been consumed accounts for a high proportion of the total service life.
Die Erfindung umfasst ein System, das aus mindestens zwei Sensoren sowie einer elektronischen Einheit besteht, in der die Messsignale der Sensoren zusammengeführt werden und die entstehenden Messdaten potentiell verarbeitet werden können. Die Sensoren können im Einzelnen z.B. ein Drucksensor, ein Ultraschallsensor, ein Gewichtssensor sowie ein Temperatursensor sein. Die elektronische Einheit kann zudem eine Schnittstelle enthalten, über welche die Daten an weitere Systeme gesendet werden können. Diese Schnittstelle kann durch einen physischen Kabelanschluss oder eine drahtlose Datenverbindung realisiert werden. Das System, welches die Erfindung umfasst, muss zudem eine Schnittstelle für den Anschluss an einer Gasflasche enthalten.The invention comprises a system which consists of at least two sensors and an electronic unit in which the measurement signals from the sensors are brought together and the measurement data produced can potentially be processed. The sensors can be, for example, a pressure sensor, an ultrasonic sensor, a weight sensor and a temperature sensor. The electronic unit can also contain an interface via which the data can be sent to other systems. This interface can be implemented through a physical cable connection or a wireless data connection. The system comprising the invention must also contain an interface for connection to a gas cylinder.
Bis zu einer bestimmten Entnahmemenge des Gases ist der Gasdruck in der Flasche konstant, da Flüssiggas bei der Entnahme verdampft bis der Dampfdruck der Flüssigkeit wieder erreicht ist. Bis zum Zeitpunkt des vollständigen Verdampfens des Flüssiggases kann der Gasverbrauch anhand der Messung des Füllstandes in der Gasflasche gemessen werden. Ab diesem Zeitpunkt liefert die Füllstandsmessung keine Information mehr zum Gasverbrauch. Ab diesem Zeitpunkt kann der Gasverbrauch durch die Messung des Gasdruckes ermittelt werden. Um temperaturbedingte Schwankungen im Gasdruck erkennen zu können, wird zusätzlich die Temperatur des Gases in der Gasflasche gemessen. Aufgrund der thermischen Zustandsgleichung können Änderungen des Gasdruckes durch Temperaturänderungen somit bei der Ermittlung des Gasverbrauches eliminiert werden. Eine Änderung des Gasdruckes kann dann ausschließlich durch Entnahme von Gas aus der Flasche zustande kommen.Up to a certain amount of gas withdrawn, the gas pressure in the bottle is constant, since liquid gas evaporates during withdrawal until the vapor pressure of the liquid is reached again. Until the liquid gas has completely evaporated, the gas consumption can be measured by measuring the level in the gas cylinder. From this point on, the level measurement no longer provides any information on gas consumption. From this point on, the gas consumption can be determined by measuring the gas pressure. In order to be able to recognize temperature-related fluctuations in the gas pressure, the temperature of the gas in the gas cylinder is also measured. Due to the thermal equation of state, changes in the gas pressure due to temperature changes can thus be eliminated when determining the gas consumption. A change in the gas pressure can then only come about by removing gas from the bottle.
FigurenlisteFigure list
Weitere optionale Einzelheiten und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele, welche in den Figuren schematisch dargestellt sind.Further optional details and features of the invention emerge from the following description of preferred exemplary embodiments, which are shown schematically in the figures.
Es zeigen:
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1 eine Darstellung einer erfindungsgemäßen Vorrichtung bei einem ersten Zustand und -
2 eine Darstellung der erfindungsgemäßen Vorrichtung bei einem zweiten Zustand.
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1 a representation of an inventive device in a first state and -
2 a representation of the device according to the invention in a second state.
Ausführungsformen der ErfindungEmbodiments of the invention
Die Vorrichtung
Bei dem in
Die Funktionsweise der Vorrichtung
Die elektronische Auswerteeinheit kann optional eine Schnittstelle
Claims (10)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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DE102019216503.6A DE102019216503A1 (en) | 2019-10-25 | 2019-10-25 | Device for determining the consumption of a gas from a gas cylinder which is at least partially filled with gas |
EP20197201.5A EP3812645A1 (en) | 2019-10-25 | 2020-09-21 | Device for determining the consumption of a gas from a gas bottle at least partially filled with gas |
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DE102019216503.6A DE102019216503A1 (en) | 2019-10-25 | 2019-10-25 | Device for determining the consumption of a gas from a gas cylinder which is at least partially filled with gas |
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DE102019216503.6A Withdrawn DE102019216503A1 (en) | 2019-10-25 | 2019-10-25 | Device for determining the consumption of a gas from a gas cylinder which is at least partially filled with gas |
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SE540249C2 (en) * | 2016-12-20 | 2018-05-15 | Scania Cv Ab | A method for determining the functionality of a pressure regulator and a liquefied gas fuel system |
EP3983716A1 (en) * | 2019-06-14 | 2022-04-20 | Volkswagen Ag | Fuel supply system for primary supply of an energy conversion device from a gas cushion of a fuel tank in which gaseous fuel is stored in liquefied form |
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2019
- 2019-10-25 DE DE102019216503.6A patent/DE102019216503A1/en not_active Withdrawn
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