EP0443068A1 - Process and device for removing, during vehicle fuelling, of existing and/or released gases - Google Patents
Process and device for removing, during vehicle fuelling, of existing and/or released gases Download PDFInfo
- Publication number
- EP0443068A1 EP0443068A1 EP90103459A EP90103459A EP0443068A1 EP 0443068 A1 EP0443068 A1 EP 0443068A1 EP 90103459 A EP90103459 A EP 90103459A EP 90103459 A EP90103459 A EP 90103459A EP 0443068 A1 EP0443068 A1 EP 0443068A1
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- Prior art keywords
- fuel
- suction
- disposal
- line
- gases
- Prior art date
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- 239000007789 gas Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims description 15
- 239000000446 fuel Substances 0.000 claims abstract description 47
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000605 extraction Methods 0.000 claims abstract description 14
- 239000002828 fuel tank Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 238000009298 carbon filtering Methods 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 2
- 238000005429 filling process Methods 0.000 abstract description 3
- 238000007872 degassing Methods 0.000 description 4
- 210000003739 neck Anatomy 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
- B67D7/0476—Vapour recovery systems
- B67D7/0478—Vapour recovery systems constructional features or components
- B67D7/048—Vapour flow control means, e.g. valves, pumps
- B67D7/0482—Vapour flow control means, e.g. valves, pumps using pumps driven at different flow rates
- B67D7/0486—Pumps driven in response to electric signals indicative of pressure, temperature or liquid flow
Definitions
- the invention relates to a method for the disposal of the gases released and / or existing when refueling a vehicle with fuel, in particular gasoline-air mixtures, by suction and return to a fuel tank, for example an underground tank, a gas station, and a device for carrying out this method.
- gas mixtures are formed in the vicinity of the tap, which contain more or less large amounts of gasoline. As a rule, this can also be smelled by the person carrying out the refueling process, so that there are increasing discussions about the harmfulness of the inhalation of such toxic gases and it is also becoming apparent that environmental pollution takes place even when there are non-smellable gas concentrations.
- the purpose of the invention is to avoid this undesirable and harmful pollution.
- the invention has for its object to provide a technically simple disposal, avoiding the mentioned disadvantages, which has no undesired air intake, is simple in terms of equipment and requires little space, so that retrofitting of existing petrol stations is also possible.
- the object is inventively achieved by a method of the aforementioned type characterized in that the suction-flow fuel is carried out of the vehicle during the process of fueling exclusively in that for the extraction a constant negative pressure in the disposal system, regardless of the number of connected fuel dispensing points maintained is that the gases to be disposed of are temporarily stored in the fuel tank, for example an underground tank, and that the gases are preferably disposed of via an activated carbon filter, regardless of the extraction process. This makes it possible to record 90% of the gases produced during the extraction and thus disposal, without unnecessary or unnecessary air being sucked in from the environment, which would be able to burden the disposal system.
- the suction is preferably carried out with a constant negative pressure between 0.1 and 0.3 bar, preferably 0.2 bar in the disposal system by means of a pump control which reacts to changes in the disposal system which take place as a function of the number of activated tapping points.
- the device according to the invention for carrying out this method has a gas suction line, which is led from a vacuum pump to the suction point on the one hand and opens into a disposal container, in particular the underground tank, and is characterized by a control valve in the gas suction line, which opens the connection to the vacuum pump as soon and as long Fuel flows through a refueling fuel line, through a pressure sensor connected to the gas extraction line to determine the vacuum and control of the vacuum pump in order to keep the vacuum in the gas extraction line constant, and through a device connected to the disposal container for activated carbon filtering, flaring or the like Gases.
- control valve can be connected to a fuel flow meter, in particular a piston meter for measuring the fuel quantity of the fuel dispensing line, in order to open or close it.
- a fuel flow meter in particular a piston meter for measuring the fuel quantity of the fuel dispensing line
- the degassing device is thus very simple, works only when and as long as fuel is filled into the tank of the motor vehicle and thus detects the harmful gases in the tank for disposal, the degassing caused by turbulence during the filling process, without additional air being sucked in from the environment are and can be easily installed on existing petrol station facilities.
- branch lines can be connected to the gas suction line according to the number of suction points to provide a central disposal system with a pump and a disposal container, each of which is provided with a control valve which opens the connection to the pump depending on the fuel flow at the respective suction point and closes.
- the refueling system shown schematically in the drawing consists of an underground tank 1 for the fuel.
- the further fuel tanks present at each petrol station are not shown in the drawing, since everyone is familiar and familiar with the fact that different underground tanks are available at the usual petrol stations for the different types of fuel.
- a fuel dispensing line 2 is connected to the underground tank 1, drawn in dash-dotted lines, and leads in a known manner via an associated petrol pump to a fuel nozzle 3 or 4 by means of two branch lines 5 and 6.
- Each fuel branch line 5, 6 is provided with a gas measuring device 7 or 8, which determines the presence of air in the fuel line and separates it automatically in order to avoid incorrect calculations of the fuel quantity drawn.
- a piston meter 9 or 10 for fuel quantity measurement in each fuel branch line 5, 6, which is connected to the liter display and the price calculation system of the fuel pump.
- the piston meter is basically an element of a refueling system, which only starts to work when fuel is removed and stops when the removal process has ended.
- the tank system described is equipped with a central disposal device for the gases which are released and / or are present when fueling a motor vehicle, in particular gasoline-air mixtures, by suction and return to the underground tank 1.
- the device consists of a gas suction line 11 or 12 which is led from the nozzle 3 or 4 to the underground tank 1, the two gas suction lines 11 and 12 being brought together at a convenient point, for example via a T-piece, to form a single disposal line 13 .
- a control valve 14 is located in the gas suction line 11 or 12 or 15 arranged, which receives its switching signal from the associated piston counter 9 or 10.
- the control valve 14 or 15 opens the connection between the suction point on the nozzle 3 or 4 and a connection to a vacuum pump 16 of the disposal line 13, which in turn is connected to the underground tank 1 via a line.
- the vacuum pump 1 works continuously and is intended to maintain a constant vacuum of 0.2 bar in the disposal system.
- the performance of the vacuum pump 16 is regulated by means of a pressure sensor 17, which detects the pressure present in the disposal line 13 and regulates the pump output in the sense of keeping the pressure constant at 0.2 bar in the disposal system.
- a vent line 18 is also connected to the underground tank 1 and is connected to the atmosphere via an activated carbon filter 19.
- the branch piece 20 or 21 still to be found in the drawing serves to bring together and later coaxially guide the separate line systems “fuel” / “gas disposal” and thus illustrates the possibility of carrying out the installation of the disposal device on existing tank systems in a simple manner.
- the vacuum pump 16 uses the pressure sensor 17 to generate a constant pressure in the disposal system of 0.2 bar. If a refueling process is carried out, the fuel nozzle is lifted out of the fuel pump and placed on the tank filler neck of the motor vehicle, a sleeve 22 or 23 being placed over the neck as airtight as possible. As soon as fuel is removed, the control valve 14 or 15 receives a switching signal from the piston counter 9 or 10 - or also mechanically from the fuel nozzle - and is opened. The connection of the suction point 24 or 25 via the Vacuum pump 16 with the underground tank 1 is thus produced and the disposal of the gasoline-air mixtures 1 occurring during refueling is ensured.
- Disposal takes place only as long as fuel actually flows as part of the refueling process.
- the piston knife 9 or 10 sends a corresponding switching signal to the control valve 14 or 15, which closes and thus interrupts the connection to the vacuum pump 16. If there is an overload of the underground tank 1 in terms of volume through this disposal, the excess gases are disposed of via the ventilation line 18 and the activated carbon filter 19 in a cleaned manner to the atmosphere.
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Entsorgung der beim Betanken eines Fahrzeugs mit Kraftstoff freiwerdenden und/oder vorhandenen Gase, insbesondere Benzin-Luftgemische, durch Absaugung und Rückführung in einen Kraftstoffbehälter, beispielsweise Erdtank, einer Tankstelle, sowie eine Vorrichtung zur Durchführung dieses Verfahrens.The invention relates to a method for the disposal of the gases released and / or existing when refueling a vehicle with fuel, in particular gasoline-air mixtures, by suction and return to a fuel tank, for example an underground tank, a gas station, and a device for carrying out this method.
Beim Betanken eines Kraftfahrzeugs an einer Tankstelle entstehen im Umfeld der Zapfstelle Gasgemische, die in mehr oder weniger großen Anteilen Benzin enthalten. Dies ist in der Regel für die den Tankvorgang ausführende Person auch riechbar, so daß zunehmend Diskussionen über die Schädlichkeit der Einatmung solcher giftiger Gase geführt werden und auch offensichtlich wird, daß selbst dann eine Umweltverschmutzung stattfindet, wenn nicht riechbare Gaskonzentrationen vorhanden sind. Generell entweichen beim Befüllen eines Kraftfahrzeugtanks die im Tank selbst befindlichen Gase, entstehen giftige Gasgemische durch die Entgasung des Kraftstoffes selbst aufgrund von beim Befüllvorgang verursachten Turbulenzen im Tank, gegebenenfalls verstärkt durch die natürliche Entgasung aufgrund hoher Außentemperatur und entstehen schließlich schädliche Gasgemische durch Überfüllung des Tanks, Verflüchtigen des Kraftstoffs und Entweichen der Gase in die Atmosphäre.When refueling a motor vehicle at a petrol station, gas mixtures are formed in the vicinity of the tap, which contain more or less large amounts of gasoline. As a rule, this can also be smelled by the person carrying out the refueling process, so that there are increasing discussions about the harmfulness of the inhalation of such toxic gases and it is also becoming apparent that environmental pollution takes place even when there are non-smellable gas concentrations. In general, when filling a motor vehicle tank, the gases in the tank itself escape, toxic gas mixtures arise from the degassing of the fuel itself due to turbulence in the tank during the filling process, possibly intensified through natural degassing due to the high outside temperature, and ultimately harmful gas mixtures arise from overfilling the tank, The fuel evaporates and the gases escape into the atmosphere.
Der Zweck der Erfindung geht dahin, diese unerwünschte und schädliche Umweltverschmutzung zu vermeiden.The purpose of the invention is to avoid this undesirable and harmful pollution.
Hierzu gibt es bereits geschlossene Entsorgungssysteme, mit denen die beim Betanken von Kraftfahrzeugen entweichenden oder entstehenden Gase umweltschonend über eine glockenartige Manschette am Tankeinfüllstutzen des Kraftfahrzeugs mittels einer Vakuumpumpe abgesaugt werden und in den Kraftstofftank zurückgeführt werden. Nachteiligerweise erfordert ein geschlossenes System genormte Einfüllstutzen an den zu betankenden Kraftfahrzeugen, die regional vorhanden sind, überwiegend national und international jedoch noch nicht existent sind.For this purpose, there are already closed disposal systems with which the gases escaping or emerging during the refueling of motor vehicles are sucked off in an environmentally friendly manner via a bell-like collar on the tank filler neck of the motor vehicle by means of a vacuum pump and returned to the fuel tank. Disadvantageously, a closed system requires standardized filler necks on the vehicles to be refueled, which are available regionally but predominantly nationally and internationally, but do not yet exist.
Ferner sind offene Systeme zur Gasabsaugung an Zapfpistolen von Kraftfahrzeugtankstellen bekannt, bei denen ebenfalls wie bei einer Manschette die beim Tanken entstehenden Gase mittels einer Vakuumpumpe abgesaugt werden. Nachteiligerweise arbeitet bei diesen Systemen die Vakuumpumpe bereits in dem Moment, da die Zapfpistole an der Zapfsäule vom Haken oder ihrer sonstigen Halterung entnommen wird, so daß zunächst über einen längeren Zeitraum nur Luft angesaugt wird. Hiermit ist eine "Leer"-Belastung des Entsorgungsbehälters verbunden, der in der Regel der Erdtank der Tankstelle ist. Die darin befindlichen Gase werden aufgrund der Überlastung in die Atmosphäre herausgedrückt, so daß mittelbar die unerwünschte Umweltverschmutzung trotz Absaugsystem stattfindet. Darüber hinaus sind die bekannten Anlagen apparativ kompliziert, erfordern eine Vielzahl von Pumpen und Steuerungseinrichtungen sowie verschleißanfällige mechanische Absperrelemente.Furthermore, open systems for gas extraction on fuel nozzles from motor vehicle filling stations are known, in which, just as with a sleeve, the gases produced during refueling are extracted by means of a vacuum pump. The disadvantage of these systems is that the vacuum pump is already operating at the moment when the fuel nozzle on the fuel pump is removed from the hook or its other holder, so that initially only air is drawn in over a longer period of time. This is associated with an "empty" load on the disposal container, which is usually the underground tank of the petrol station. The gases in it are pushed out into the atmosphere due to the overload, so that the undesirable environmental pollution occurs despite the extraction system. In addition, the known systems are complicated in terms of equipment, require a large number of pumps and control devices and wear-prone mechanical shut-off elements.
Der Erfindung liegt in Anbetracht dieses Standes der Technik die Aufgabe zugrunde, unter Meidung genannter Nachteile eine technisch einfache Entsorgung bereitzustellen, die keine unerwünschte Luftansaugung aufweist, apparativ einfach gestaltet ist und einen geringen Platzbedarf hat, so daß auch die Nachrüstung vorhandener Tankstellen ermöglicht ist.In view of this prior art, the invention has for its object to provide a technically simple disposal, avoiding the mentioned disadvantages, which has no undesired air intake, is simple in terms of equipment and requires little space, so that retrofitting of existing petrol stations is also possible.
Die Aufgabe ist erfindungsgemäß an einem Verfahren der eingangs genannten Art dadurch gelöst, daß die Absaugung ausschließlich bei Kraftstoff-Fluß während des Vorgangs des Betankens des Fahrzeugs vorgenommen wird, daß zur Absaugung ein konstanter Unterdruck im Entsorgungssystem unabhängig von der Anzahl der angeschlossenen Kraftstoff-Zapfstellen aufrechterhalten wird, daß die zu entsorgenden Gase in den Kraftstoffbehälter, beispielsweise Erdtank, zwischengelagert werden und daß hieraus unabhängig von dem Absaugungsvorgang die Gase vorzugsweise über eine Aktivkohlefilterung entsorgt werden. Hiermit ist es möglich, 90% der entstehenden Gase im Rahmen der Absaugung und damit Entsorgung zu erfassen, ohne daß überflüssige bzw. unnötigerweise Luft aus der Umgebung angesaugt wird, die in der Lage wäre, das Entsorgungssystem zu belasten.The object is inventively achieved by a method of the aforementioned type characterized in that the suction-flow fuel is carried out of the vehicle during the process of fueling exclusively in that for the extraction a constant negative pressure in the disposal system, regardless of the number of connected fuel dispensing points maintained is that the gases to be disposed of are temporarily stored in the fuel tank, for example an underground tank, and that the gases are preferably disposed of via an activated carbon filter, regardless of the extraction process. This makes it possible to record 90% of the gases produced during the extraction and thus disposal, without unnecessary or unnecessary air being sucked in from the environment, which would be able to burden the disposal system.
Vorzugsweise wird die Absaugung mit einem konstanten Unterdruck zwischen 0,1 und 0,3 bar, vorzugsweise 0,2 bar im Entsorgungssystem mittels einer Pumpenregelung vorgenommen, die auf in Abhängigkeit von der Zahl der aktivierten Zapfstellen stattfindende Druck Änderungen im Entsorgungssystem reagiert.The suction is preferably carried out with a constant negative pressure between 0.1 and 0.3 bar, preferably 0.2 bar in the disposal system by means of a pump control which reacts to changes in the disposal system which take place as a function of the number of activated tapping points.
Die erfindungsgemäße Vorrichtung zur Durchführung dieses Verfahrens weist eine von einer Unterdruckpumpe zu der Absaugstelle einerseits geführten und in einem Entsorgungsbehälter, insbesondere dem Erdtank, mündenden Gasabsaugungsleitung andererseits auf und ist gekennzeichnet durch ein Steuerventil in der Gasabsaugleitung, welches die Verbindung zur Unterdruckpumpe öffnet, sobald und solange Kraftstoff durch eine Betankungs-Kraftstoffleitung fließt, durch einen an die Gasabsaugleitung angeschlossenen Drucksensor zur Ermittlung des Unterdrucks und Regelung der Unterdruckpumpe im Sinne einer Konstanthaltung des Unterdrucks in der Gasabsaugleitung sowie durch eine an den Entsorgungsbehälter angeschlossene Einrichtung zur Aktivkohlefilterung, Abfackelung oder dgl. Entsorgung der abgesaugten Gase. Hierbei kann gemäß einer bevorzugten Ausgestaltung das Steuerventil mit einem Kraftstoff-Flußmesser, insbesondere einem Kolbenmesser zur Kraftstoffmengenmessung der Kraftstoff-Zapfleitung zu seiner Öffnung bzw. Schließung verbunden sein. Es ist aber auch möglich, das Steuerventil durch den Handhebel der Zapfpistole mechanisch zu öffnen bzw. zu schließen.The device according to the invention for carrying out this method has a gas suction line, which is led from a vacuum pump to the suction point on the one hand and opens into a disposal container, in particular the underground tank, and is characterized by a control valve in the gas suction line, which opens the connection to the vacuum pump as soon and as long Fuel flows through a refueling fuel line, through a pressure sensor connected to the gas extraction line to determine the vacuum and control of the vacuum pump in order to keep the vacuum in the gas extraction line constant, and through a device connected to the disposal container for activated carbon filtering, flaring or the like Gases. Here, according to a preferred Embodiment, the control valve can be connected to a fuel flow meter, in particular a piston meter for measuring the fuel quantity of the fuel dispensing line, in order to open or close it. But it is also possible to mechanically open or close the control valve using the hand lever of the nozzle.
Die Pumpe ist vorzugsweise eine druckgeregelte Vakuumpumpe für Konstantbetrieb im Druckbereich x P = 0,1 bis 0,3 bar, vorzugsweise 0,2 bar.The pump is preferably a pressure-controlled vacuum pump for constant operation in the pressure range x P = 0.1 to 0.3 bar, preferably 0.2 bar.
Die Entgasungsvorrichtung ist somit sehr einfach aufgebaut, arbeitet ausschließlich wenn und solange Kraftstoff in den Tank des Kraftfahrzeugs gefüllt wird und erfaßt damit zur Entsorgung die im Tank befindlichen schädlichen Gase, die durch Turbulenzen während des Befüllvorgangs entstehenden Entgasungen, ohne daß zusätzliche Luftmengen aus der Umgebung angesaugt werden und läßt sich in einfacher Weise an vorhandenen Tankstelleneinrichtungen nachinstallieren.The degassing device is thus very simple, works only when and as long as fuel is filled into the tank of the motor vehicle and thus detects the harmful gases in the tank for disposal, the degassing caused by turbulence during the filling process, without additional air being sucked in from the environment are and can be easily installed on existing petrol station facilities.
Zu letzterem Zweck können an die Gasabsaugleitung Zweigleitungen entsprechend der Anzahl der Absaugstellen zur Bereitstellung eines zentralen Entsorgungssystems mit einer Pumpe und einem Entsorgungsbehälter angeschlossen werden, die jeweils mit einem Steuerventil versehen sind, welches in Abhängigkeit vom Kraftstofffluß an der Jeweiligen Absaugstelle die Verbindung zur Pumpe öffnet und schließt.For the latter purpose, branch lines can be connected to the gas suction line according to the number of suction points to provide a central disposal system with a pump and a disposal container, each of which is provided with a control valve which opens the connection to the pump depending on the fuel flow at the respective suction point and closes.
Weitere Einzelheiten, Merkmale und Vorteile des Gegenstandes der Erfindung ergeben sich aus der nachfolgenden Beschreibung der zugehörigen Zeichnung, in der schematisch eine Entsorgungseinrichtung für eine Tankstelle mit zwei Zapfstellen dargestellt ist.Further details, features and advantages of the subject matter of the invention will become apparent from the following description of the accompanying drawing, in which a disposal device for a gas station with two dispensing points is shown schematically.
Die in der Zeichnung schematisch dargestellte Betankungsanlage besteht aus einem Erdtank 1 für den Kraftstoff. Die an jeder Tankstelle vorhandenen weiteren Kraftstoffbehälter sind aus Gründen der Vereinfachung zeichnerisch nicht dargestellt, da jedermann bekannt und geläufig ist, daß für die verschiedenen Kraftstoffsorten verschiedene Erdtanks an den üblichen Tankstellen vorhanden sind.The refueling system shown schematically in the drawing consists of an underground tank 1 for the fuel. For reasons of simplification, the further fuel tanks present at each petrol station are not shown in the drawing, since everyone is familiar and familiar with the fact that different underground tanks are available at the usual petrol stations for the different types of fuel.
An den Erdtank 1 ist - strichpunktiert gezeichnet - eine Kraftstoff-Zapfleitung 2 angeschlossen, die in ebenfalls bekannter Weise über eine zugehörige Zapfsäule zu einer Zapfpistole 3 bzw. 4 mittels zweier Zweigleitungen 5 und 6 führt.A fuel dispensing line 2 is connected to the underground tank 1, drawn in dash-dotted lines, and leads in a known manner via an associated petrol pump to a
Jede Kraftstoff-Zweigleitung 5,6 ist mit einer Gasmeßeinrichtung 7 bzw. 8 versehen, die das Vorhandensein von Luft in der Kraftstoffleitung feststellt und diese automatisch abscheidet, um Fehlberechnungen an gezapfter Kraftstoffmenge zu vermeiden. Darüber hinaus findet sich in Jeder Kraftstoff-Zweigleitung 5,6 ein Kolbenmesser 9 bzw. 10 zur Kraftstoffmengenmessung, der mit der Literanzeige und dem Preisberechnungssystem der Zapfsäule in Verbindung steht. Der Kolbenmesser ist grundsätzlich ein Element einer Betankungsanlage, welches erst zu arbeiten beginnt, wenn Kraftstoff entnommen wird und stoppt, wenn der Entnahmevorgang beendet ist.Each
Die beschriebene Tankanlage ist mit einer zentralen Entsorgungseinrichtung für die beim Betanken eines Kraftfahrzeugs mit Kraftstoff freiwerdenden und/oder vorhandenen Gase, insbesondere Benzin-Luftgemische, durch Absaugung und Rückführung in den Erdtank 1 ausgestattet. Die Vorrichtung besteht aus einer Gasabsaugleitung 11 bzw. 12, die von der Zapfpistole 3 bzw. 4 bis zum Erdtank 1 geführt ist, wobei an günstiger Stelle die beiden Gasabsaugleitungen 11 und 12, beispielsweise über ein T-Stück zu einer einzigen Entsorgungsleitung 13 zusammengeführt sind. In der Gasabsaugleitung 11 bzw. 12 ist ein Steuerventil 14 bzw. 15 angeordnet, welches sein Schaltsignal vom zugehörigen Kolbenzähler 9 bzw. 10 erhält. Das Steuerventil 14 bzw. 15 öffnet die Verbindung zwischen der Absaugstelle an der Zapfpistole 3 bzw. 4 und einem Anschluß an eine Unterdruckpumpe 16 der Entsorgungsleitung 13, die wiederum mit dem Erdtank 1 über eine Leitung verbunden ist. Die Unterdruckpumpe 1 arbeitet ununterbrochen und ist vorgesehen, im Entsorgungssystem einen konstanten Unterdruck von 0,2 bar aufrechtzuerhalten. Um dies sicherzustellen, wird die Leistung der Unterdruckpumpe 16 mittels eines Drucksensors 17 geregelt, der den in den Entsorgungsleitung 13 vorhandenen Druck erfaßt und im Sinne der Konstanthaltung des Drucks auf 0,2 bar im Entsorgungssystem die Pumpenleistung regelnd anpaßt.The tank system described is equipped with a central disposal device for the gases which are released and / or are present when fueling a motor vehicle, in particular gasoline-air mixtures, by suction and return to the underground tank 1. The device consists of a
An den Erdtank 1 ist ferner eine Entlüftungsleitung 18 angeschlossen, die über einen Aktivkohlefilter 19 mit der Atmosphäre in Verbindung steht.A
Das in der Zeichnung noch zu findende Abzweigstück 20 bzw. 21 dient der Zusammenführung und späteren Koaxialführung der voneinander getrennten Leitungssysteme "Kraftstoff"/"Gasentsorgung" und verdeutlicht derart die Möglichkeit, die Installation der Entsorgungseinrichtung an vorhandenen Tankanlagen in apparativ einfacher Weise durchzuführen.The
Im Betrieb erzeugt die Unterdruckpumpe 16 mit Hilfe des Drucksensors 17 einen konstanten Druck im Entsorgungssystem von 0,2 bar. Im Falle der Durchführung eines Betankungsvorgangs wird die Zapfpistole aus der Tanksäule abgehoben und auf den Tankeinfüllstutzen des Kraftfahrzeugs gesetzt, wobei eine Manschette 22 bzw. 23 über den Stutzen möglichst luftdicht gesetzt wird. In dem Moment, da Kraftstoff entnommen wird, erhält das Steuerventil 14 bzw. 15 ein Schaltsignal vom Kolbenzähler 9 bzw. 10 - oder auch mechanisch von der Zapfpistole - und wird geöffnet. Die Verbindung der Absaugstelle 24 bzw. 25 über die Vakuumpumpe 16 mit dem Erdtank 1 ist damit hergestellt und die Entsorung der beim Betanken auftretenden Benzin-Luftgemische 1 sichergestellt. Die Entsorgung findet nur solange statt, wie tatsächlich Kraftstoff im Rahmen des Betankungsvorgangs fließt. Mit dem Ende des Betankungsvorgangs ergeht vom Kolbenmesser 9 bzw. 10 ein entsprechendes Schaltsignal an das Steuerventil 14 bzw. 15, welches schließt und somit die Verbindung zur Unterdruckpumpe 16 unterbricht. Sollte es im Wege dieser Entsorgung zu einer Überlastung des Erdtanks 1 volumenmäßig kommen, findet die Entsorgung der überschüssigen Gase über die Entlüftungsleitung 18 und den Aktivkohlefilter 19 in gereinigter Weise an die Atmosphäre statt.In operation, the
Aus der obigen Beschreibung und Zeichnung ist erkennbar, daß über weitere Gasabsaugungsleitungen bzw. Zweigleitungen von der Entsorgungsleitung 13 weitere Zapfpistolen in einfacher Weise an die Entsorgungseinrichtung angeschlossen werden können, wobei Jeweils ein Steuerventil vorhanden sein muß, welches mit dem Kolbenmesser bzw. der Zapfpistole derart in Verbindung steht, daß eine Entsorgung nur bei einer Kraftstoffentnahme stattfindet.From the above description and drawing it can be seen that via further gas extraction lines or branch lines from the
- 11
- ErdtankUnderground tank
- 22nd
- Kraftstoff-ZapfleitungFuel nozzle
- 33rd
- ZapfhahnTap
- 44th
- ZapfpistoleFuel nozzle
- 55
- ZweigleitungBranch line
- 66
- ZweigleitungBranch line
- 77
- GasmeßeinrichtungGas measuring device
- 88th
- GasmeßeinrichtungGas measuring device
- 99
- KolbenmesserPiston knife
- 1010th
- KolbenmesserPiston knife
- 1111
- GasabsaugleitungGas extraction line
- 1212
- GasabsaugleitungGas extraction line
- 1313
- EntsorgungsleitungDisposal line
- 1414
- SteuerventilControl valve
- 1515
- SteuerventilControl valve
- 1616
- UnterdruckpumpeVacuum pump
- 1717th
- DrucksensorPressure sensor
- 1818th
- EntlüftungsleitungVent line
- 1919th
- AktivkohlefilterActivated carbon filter
- 2020th
- AbzweigstückBranch piece
- 2121
- AbzweigstückBranch piece
- 2222
- Manschettecuff
- 2323
- Manschettecuff
- 2424th
- AbsaugstelleSuction point
- 2525th
- AbsaugstelleSuction point
Claims (6)
dadurch gekennzeichnet,
daß die Absaugung ausschließlich bei Kraftstoff-Fluß während des Vorgangs des Betankens des Fahrzeugs vorgenommen wird, daß zur Absaugung ein konstanter Unterdruck im Entsorgungssystem unabhängig von der Anzahl der angeschlossenen Kraftstoff-Zapfstellen aufrechterhalten wird, daß die zu entsorgenden Gase in dem Kraftstoffbehälter zwischengelagert werden und daß die Gase hieraus unabhängig vorzugsweise über eine Aktivkohlefilterung entsorgt werden.Process for the disposal of the gases released and / or available when refueling a vehicle with fuel, in particular gasoline-air mixtures, by suction and return to a fuel tank, for example underground tank, a gas station,
characterized,
that the suction is carried out only with fuel flow during the refueling process of the vehicle, that a constant negative pressure is maintained in the disposal system regardless of the number of connected fuel taps for the suction, that the gases to be disposed of are temporarily stored in the fuel tank and that the gases from this are preferably disposed of independently via activated carbon filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP90103459A EP0443068A1 (en) | 1990-02-22 | 1990-02-22 | Process and device for removing, during vehicle fuelling, of existing and/or released gases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP90103459A EP0443068A1 (en) | 1990-02-22 | 1990-02-22 | Process and device for removing, during vehicle fuelling, of existing and/or released gases |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0443068A1 true EP0443068A1 (en) | 1991-08-28 |
Family
ID=8203681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90103459A Ceased EP0443068A1 (en) | 1990-02-22 | 1990-02-22 | Process and device for removing, during vehicle fuelling, of existing and/or released gases |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP0443068A1 (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4203620A1 (en) * | 1991-06-19 | 1993-01-21 | Ross Europa Gmbh | VALVE ARRANGEMENT, ESPECIALLY FOR RETURNING FUEL DAMPERS |
| DE4141161A1 (en) * | 1991-11-30 | 1993-06-03 | Tecalemit Gmbh Deutsche | Intermediate piece for pipe connecting petrol pump to underground tank - has tapped hole for adaptor for connecting smaller pipe inclined at angle of 45 deg. to main pipe |
| DE9206675U1 (en) * | 1992-05-16 | 1993-06-17 | Leybold AG, 6450 Hanau | Device for extracting fuel vapors |
| DE4224950A1 (en) * | 1991-02-03 | 1993-10-28 | Fritz Curtius | Evaluating emissions of gas return arrangements in vehicle fuel tank filling systems - involves taking into account properties of inert gas and gas vol. development caused by fuel displacement |
| EP0589615A1 (en) * | 1992-09-16 | 1994-03-30 | Gilbarco Inc. | Fuel dispenser with vapour recovery means |
| EP0595655A1 (en) * | 1992-10-29 | 1994-05-04 | Gilbarco Inc. | Vapour recovery apparatus |
| EP0598928A1 (en) * | 1992-11-17 | 1994-06-01 | Scheidt & Bachmann Gmbh | Petrol station with fuel vapor recovery |
| WO1995009805A1 (en) * | 1993-10-04 | 1995-04-13 | Gilbarco Inc. | Centralized vacuum assist vapour recovery system |
| US5464466A (en) * | 1993-11-16 | 1995-11-07 | Gilbarco, Inc. | Fuel storage tank vent filter system |
| US5571310A (en) * | 1995-05-12 | 1996-11-05 | Gilbarco Inc. | Volatile organic chemical tank ullage pressure reduction |
| FR2736340A1 (en) * | 1995-07-06 | 1997-01-10 | Janssen Sylvain Jean | CIRCUIT AND SYSTEM FOR RECOVERING HYDROCARBON VAPORS FOR STATIONS SERVING A TWO-STAGE PUMPING |
| FR2756818A1 (en) * | 1995-08-15 | 1998-06-12 | Dresser Ind | DEVICE AND METHOD FOR RECOVERING FUEL VAPORS |
| US5843212A (en) * | 1995-05-12 | 1998-12-01 | Gilbarco Inc. | Fuel tank ullage pressure reduction |
| US5868175A (en) * | 1996-06-28 | 1999-02-09 | Franklin Electric Co., Inc. | Apparatus for recovery of fuel vapor |
| EP1103516A1 (en) * | 1999-11-26 | 2001-05-30 | Dresser Wayne Ab | Vapour recovery device for a fuel filling installation |
| EP1353114A3 (en) * | 2002-04-03 | 2007-08-01 | Air Liquide Deutschland GmbH | Transferring hose |
| EP2490946A4 (en) * | 2009-10-19 | 2013-04-03 | Swashpump Technologies Ltd | Vapor recovery pump regulation of pressure to maintain air to liquid ratio |
| CN111038728A (en) * | 2019-12-30 | 2020-04-21 | 中国航空油料有限责任公司宁夏分公司 | Aviation control system for unmanned aerial vehicle pumping truck |
| CN112250025A (en) * | 2020-11-18 | 2021-01-22 | 济南鲁纺仪佳自控技术有限公司 | A zero-emission triple oil and gas recovery system and method for a gas station |
| CN120136016A (en) * | 2025-04-02 | 2025-06-13 | 广州银展智能科技有限公司 | A non-electrical power driven oil supply system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3999936A (en) * | 1975-07-24 | 1976-12-28 | Detlev Edgar Max Hasselmann | Vapor collection and disposal system |
| FR2388762A1 (en) * | 1977-04-25 | 1978-11-24 | Calgon Corp | FUEL VAPOR RETURN INSTALLATION |
| US4197883A (en) * | 1978-01-16 | 1980-04-15 | Texaco Inc. | Secondary fuel recovery system |
| US4273164A (en) * | 1978-07-17 | 1981-06-16 | Texaco Inc. | Manifolded fuel vapor |
-
1990
- 1990-02-22 EP EP90103459A patent/EP0443068A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3999936A (en) * | 1975-07-24 | 1976-12-28 | Detlev Edgar Max Hasselmann | Vapor collection and disposal system |
| FR2388762A1 (en) * | 1977-04-25 | 1978-11-24 | Calgon Corp | FUEL VAPOR RETURN INSTALLATION |
| US4197883A (en) * | 1978-01-16 | 1980-04-15 | Texaco Inc. | Secondary fuel recovery system |
| US4273164A (en) * | 1978-07-17 | 1981-06-16 | Texaco Inc. | Manifolded fuel vapor |
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5355915A (en) * | 1990-12-11 | 1994-10-18 | Gilbarco | Vapor recovery improvements |
| DE4224950A1 (en) * | 1991-02-03 | 1993-10-28 | Fritz Curtius | Evaluating emissions of gas return arrangements in vehicle fuel tank filling systems - involves taking into account properties of inert gas and gas vol. development caused by fuel displacement |
| DE4224950C2 (en) * | 1991-02-03 | 2001-12-13 | Fritz Curtius | Return of gases in refueling plants |
| DE4203620C2 (en) * | 1991-06-19 | 1998-02-19 | Ross Europa Gmbh | Valve arrangement for returning fuel vapors |
| DE4203620A1 (en) * | 1991-06-19 | 1993-01-21 | Ross Europa Gmbh | VALVE ARRANGEMENT, ESPECIALLY FOR RETURNING FUEL DAMPERS |
| DE4141161A1 (en) * | 1991-11-30 | 1993-06-03 | Tecalemit Gmbh Deutsche | Intermediate piece for pipe connecting petrol pump to underground tank - has tapped hole for adaptor for connecting smaller pipe inclined at angle of 45 deg. to main pipe |
| DE9206675U1 (en) * | 1992-05-16 | 1993-06-17 | Leybold AG, 6450 Hanau | Device for extracting fuel vapors |
| EP0589615A1 (en) * | 1992-09-16 | 1994-03-30 | Gilbarco Inc. | Fuel dispenser with vapour recovery means |
| EP0595655A1 (en) * | 1992-10-29 | 1994-05-04 | Gilbarco Inc. | Vapour recovery apparatus |
| EP0598928A1 (en) * | 1992-11-17 | 1994-06-01 | Scheidt & Bachmann Gmbh | Petrol station with fuel vapor recovery |
| WO1995009805A1 (en) * | 1993-10-04 | 1995-04-13 | Gilbarco Inc. | Centralized vacuum assist vapour recovery system |
| US5417256A (en) * | 1993-10-04 | 1995-05-23 | Gilbarco, Inc. | Centralized vacuum assist vapor recovery system |
| US5464466A (en) * | 1993-11-16 | 1995-11-07 | Gilbarco, Inc. | Fuel storage tank vent filter system |
| US5571310A (en) * | 1995-05-12 | 1996-11-05 | Gilbarco Inc. | Volatile organic chemical tank ullage pressure reduction |
| US5626649A (en) * | 1995-05-12 | 1997-05-06 | Gilbarco Inc. | Volatile organic chemical tank ullage pressure reduction |
| US5843212A (en) * | 1995-05-12 | 1998-12-01 | Gilbarco Inc. | Fuel tank ullage pressure reduction |
| FR2736340A1 (en) * | 1995-07-06 | 1997-01-10 | Janssen Sylvain Jean | CIRCUIT AND SYSTEM FOR RECOVERING HYDROCARBON VAPORS FOR STATIONS SERVING A TWO-STAGE PUMPING |
| WO1997002208A1 (en) * | 1995-07-06 | 1997-01-23 | Schlumberger Industries S.A. | Hydrocarbon vapour recovery system having improved stability |
| FR2756818A1 (en) * | 1995-08-15 | 1998-06-12 | Dresser Ind | DEVICE AND METHOD FOR RECOVERING FUEL VAPORS |
| US5868175A (en) * | 1996-06-28 | 1999-02-09 | Franklin Electric Co., Inc. | Apparatus for recovery of fuel vapor |
| EP1103516A1 (en) * | 1999-11-26 | 2001-05-30 | Dresser Wayne Ab | Vapour recovery device for a fuel filling installation |
| EP1353114A3 (en) * | 2002-04-03 | 2007-08-01 | Air Liquide Deutschland GmbH | Transferring hose |
| EP2490946A4 (en) * | 2009-10-19 | 2013-04-03 | Swashpump Technologies Ltd | Vapor recovery pump regulation of pressure to maintain air to liquid ratio |
| CN111038728A (en) * | 2019-12-30 | 2020-04-21 | 中国航空油料有限责任公司宁夏分公司 | Aviation control system for unmanned aerial vehicle pumping truck |
| CN112250025A (en) * | 2020-11-18 | 2021-01-22 | 济南鲁纺仪佳自控技术有限公司 | A zero-emission triple oil and gas recovery system and method for a gas station |
| CN120136016A (en) * | 2025-04-02 | 2025-06-13 | 广州银展智能科技有限公司 | A non-electrical power driven oil supply system |
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