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EP1077197A1 - Control device for fuel vapour recovery - Google Patents

Control device for fuel vapour recovery Download PDF

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Publication number
EP1077197A1
EP1077197A1 EP99125025A EP99125025A EP1077197A1 EP 1077197 A1 EP1077197 A1 EP 1077197A1 EP 99125025 A EP99125025 A EP 99125025A EP 99125025 A EP99125025 A EP 99125025A EP 1077197 A1 EP1077197 A1 EP 1077197A1
Authority
EP
European Patent Office
Prior art keywords
monitoring
fuel
gas recirculation
electronics
gas
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.)
Granted
Application number
EP99125025A
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German (de)
French (fr)
Other versions
EP1077197B1 (en
Inventor
Jehad Aiysh
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Aiysh Jehad
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Individual
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Filing date
Publication date
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Priority claimed from DE1999138918 external-priority patent/DE19938918A1/en
Priority claimed from DE29914372U external-priority patent/DE29914372U1/en
Application filed by Individual filed Critical Individual
Publication of EP1077197A1 publication Critical patent/EP1077197A1/en
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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
    • 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
    • B67D7/06—Details or accessories
    • B67D7/32—Arrangements of safety or warning devices; Means for preventing unauthorised delivery of liquid
    • 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
    • B67D7/06—Details or accessories
    • B67D7/32—Arrangements of safety or warning devices; Means for preventing unauthorised delivery of liquid
    • B67D7/3281—Details
    • B67D2007/329—Function indicator devices

Definitions

  • the invention relates to a monitoring for fuel tank columns with a fuel nozzle, which has a proboscis, the proboscis via a line with is connected to a tank and a pump is arranged in the line.
  • Fuel tank columns are installed in locations where vehicles pick up fuel can, so-called petrol stations. This is done in corrosion-proof tanks fuel stored underground by generally electrically operated pumps promoted the fuel tank columns. From there, the fuel is passed through flow meters and pressed a nozzle into the nozzle. Between the The fuel tank and the above-ground atmosphere are pressure balanced.
  • the suction the gases come from a pump or, after gas-tight completion of the Suction line on the tank neck with a rubber sleeve, by means of pressure compensation.
  • the extracted gases are usually returned to the storage container and condense there due to the low temperatures in the storage container. With With the help of gas recirculation systems, about 70% of the volatile fuel components be held back.
  • the invention seeks to remedy this.
  • the invention is based on the object to create a monitoring system for fuel tank columns in which a failure occurs for both the users of the fuel tank columns as well as the petrol station staff immediately is recognizable. According to the invention, this object is achieved in that a Device for monitoring the gas recirculation is provided.
  • the invention is a monitoring for gas recirculation systems on fuel tank columns created in which a possible failure of the gas recirculation due to constant surveillance is immediately visible. Both the users of the fuel tank columns as well as the petrol station staff is warned. Through the monitoring device can automatic shutdown of the fuel tank column take place in order to avoid a health or environmental hazard.
  • the device essentially consists of a Monitoring electronics for gas recirculation. This makes it easier and at the same time created reliable, modular structure of the device.
  • a solenoid valve is connected to the monitoring electronics connected. This enables the monitoring electronics to be reliable and fast react in the event of a malfunction of the solenoid valve.
  • the monitoring electronics have a display on.
  • error messages can be displayed in the event of a malfunction be made, which simplifies the repair.
  • Maintenance is also included Simplified with the help of the messages shown on the display.
  • Indicator lights and / or at the outputs of the monitoring electronics are advantageous acoustic detector connected. With the help of the indicator lights and / or acoustic The detector is both operational readiness and a malfunction for the users of the tank system as well as for the petrol station staff without problems and widely visible or audible.
  • the fuel tank column 1 selected as an exemplary embodiment is arranged in a gas station and equipped with a gas recirculation system (GRFA). It stands over a fuel line 2 with a corrosion-proof storage tank 3 in connection.
  • GRFA gas recirculation system
  • the fuel is stored cooled in the storage tank 3.
  • In line 2 is one Pump 4 arranged that the fuel from the storage tank 3 in the direction of Fuel tank column 1 promotes.
  • a flow measuring device is in the fuel tank column 1 5 provided, which in the exemplary embodiment is a Piston knife acts. Following the flow measuring device 5 is to the Fuel line 2 is connected to a fuel nozzle 6, which is in a fuel nozzle 7 ends.
  • the gas recirculation system connects the nozzle 7 to the tank 3.
  • the nozzle 7 has a suction nozzle 8 which is connected to a gas return hose 9 is connected to the fuel pump 1.
  • the hose 9 is connected to a line 10 for gas recirculation.
  • a pump 11 On the line 10 is a pump 11, which in the exemplary embodiment is designed as a vacuum pump, arranged.
  • the line 10 ends in the storage tank 3. In a modification of the embodiment can the gas collected in a separate from the storage tank 3 Tank to be collected.
  • the gas recirculation system (GRFA) also includes one Control electronics 13, a solenoid valve 15, which is arranged in line 10, and a power supply 16.
  • a device 12 for monitoring the gas recirculation is located on the gas recirculation system intended.
  • the device 12 essentially consists of monitoring electronics 14 for gas recirculation.
  • the power supply 16 has a grounded connection PE and an AC connection from 230 V to (AC 230 V).
  • the power supply 16 is on the one hand with the control electronics 13 in connection, on the other hand with the monitoring electronics 14 for the Gas recirculation.
  • the control electronics 13 is also with the monitoring electronics 14 connected for gas recirculation.
  • the control electronics 13 is also available the solenoid valve 15 in connection, which is in line 10 of the gas recirculation is arranged.
  • the monitoring electronics 14 for the gas recirculation has a display 141. she is also with inputs E1 to E6, which are used to monitor the individual Components connected to inputs serve, and with outputs A1 to A4, which are used for Control the components connected to the individual outputs.
  • the connection to the control electronics 13 is established via the input E1; With the input E2 the connection to the power supply 16. Via the connection of the power supply 16 with the input E2 is the device 12, including monitoring electronics 14 and the connected components with power from the power supply unit 16 fed. There is a reset button S2 in the connection between power supply 16 and input E2 arranged with which the monitoring can be driven to zero.
  • the input E3 connects the monitoring electronics 14 with the gas recirculation in the gas line 10 arranged pump 11.
  • a vacuum monitor 111 is arranged in the connection between the input E3 of the electronics 14 and the pump 11.
  • the vacuum monitor 111 is formed in the embodiment in the form of a pressure switch and is explosion-proof.
  • the vacuum monitor 111 can also be used as a gas measuring probe be designed to be able to determine analog measured values of the gas.
  • the entrance E4 is connected to the solenoid valve 15. With the input E5 is the monitoring electronics 14 to a nozzle valve switch 71 provided in the nozzle 7 and connected to the flow measuring device 5 with the input E6.
  • the output A1 is connected to a green indicator light L1 in the exemplary embodiment; the output A2 with a red indicator light L2 in the exemplary embodiment.
  • the indicator lights L1 and L2 are preferably in the visible area on the fuel tank column 1 arranged.
  • the output A3 connects the monitoring electronics 14 with a switch S1.
  • the horn H should, if possible, be in the area of the fuel tank column 1 be arranged so that their sound is perceptible in the entire petrol station area is. Instead of a horn, a voice module can also be provided.
  • the control electronics 13 measures via their connections to the monitoring electronics 14 the amount of fuel flowing through the measuring device 5. At the same time controls the Control electronics 13, the solenoid valve 15 in the gas line 10.
  • the control lamp L1 lights up.
  • the Fuel tank systems with gas recirculation are ready. Now is a refueling process started and the nozzle switch 71 on the nozzle 7 is operated, via the Input E5 sent a signal to the monitoring electronics 14. At the same time through the fueling process started by the flow measuring device 5 pulses forwarded to the monitoring electronics 14 via the input E6.
  • the flow rate the gas which usually consists of fuel vapors and an air mixture, measured by the vacuum pump 11.
  • the flow rate of the gas is dependent the flow rate of the fuel, which is measured by means of the flow measuring device 5 is determined.
  • the device 12 controls the flow rates via the inputs E3 and E6 of gas and fuel, compares the values determined.
  • the Values show a certain proportionality with normal function of the gas recirculation to each other.
  • the device 12 makes a significant difference when comparing the quantities depending on the theoretical value of the gas flow rate a certain fuel flow rate and the actual value of the gas flow rate fixed - for example in the event of failure of the vacuum pump 11, the control electronics 13 or the solenoid valve 15 -, a signal to the light L1 sent so that it goes out and the indicator light L2 starts to light up.
  • the switch S1 the fuel pump can automatically switch off after the be turned off during the refueling process.
  • An error diagnosis appears on display 141.
  • the monitoring electronics 14 passes a signal to the output A4 to release an acoustic message.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)

Abstract

The system has control lamps or indicators, which are arranged at a visible region of the petrol pump. The indicators are designed to diagnose or indicate faults. The monitoring system may be used to monitor the gas (vacuum) pump, the electronic control unit or the magnetic valve.

Description

Die Erfindung betrifft eine Überwachung für Kraftstofftanksäulen mit einer Zapfpistole, die einen Saugrüssel aufweist, wobei der Saugrüssel über eine Leitung mit einem Tank in Verbindung steht und in der Leitung eine Pumpe angeordnet ist.The invention relates to a monitoring for fuel tank columns with a fuel nozzle, which has a proboscis, the proboscis via a line with is connected to a tank and a pump is arranged in the line.

Kraftstofftanksäulen sind an Orten aufgestellt, an denen Fahrzeuge Kraftstoff aufnehmen können, sogenannten Tankstellen. Dabei wird der in korrosionssicheren Tanks unterirdisch gelagerte Kraftstoff durch in der Regel elektrisch betriebene Pumpen zu den Kraftstofftanksäulen gefördert. Von dort wird der Kraftstoff über Durchflussmeßeinrichtungen und einen Zapfschlauch in die Zapfpistole gedrückt. Zwischen dem Kraftstofftank und der oberirdischen Atmosphäre erfolgt dabei ein Druckausgleich.Fuel tank columns are installed in locations where vehicles pick up fuel can, so-called petrol stations. This is done in corrosion-proof tanks fuel stored underground by generally electrically operated pumps promoted the fuel tank columns. From there, the fuel is passed through flow meters and pressed a nozzle into the nozzle. Between the The fuel tank and the above-ground atmosphere are pressure balanced.

Seit dem 01. Januar 1993 sind in Deutschland für neu eingerichtete Tankstellen bei der Fahrzeugbetankung Anlagen zur Rückführung gesundheitsgefährdender Kraftstoffdämpfe (Gasrückführung) vorgeschrieben. Für bestehende Tankstellen gelten je nach Kraftstoffumsatz Übergangsfristen von drei bis fünf Jahren. Bei der Gasrückführung, mit der der Austritt der gesundheitsschädlichen Gase (vor allem Benzol in bleifreiem Benzin) bei der Fahrzeugbetankung verhindert werden soll, ist an den Zapfpistolen ein Saugrüssel vorgesehen, der mit einer Saugleitung zur Gasrückführung vom Fahrzeugtank in den unterirdischen Vorratstank verbunden ist. Der Saugrüssel wird bei der Betankung des Fahrzeugs über den Tankstutzen übergestülpt. Das Absaugen der Gase erfolgt über eine Pumpe oder, nach gasdichtem Abschluss der Saugleitung am Tankstutzen mit einer Gummimanschette, mittels Druckausgleich. Die abgesaugten Gase werden in der Regel in den Vorratsbehälter zurückgeleitet und kondensieren dort aufgrund der geringen Temperaturen im Vorratsbehälter aus. Mit Hilfe der Gasrückführungsanlagen können etwa 70 % der flüchtigen Kraftstoffanteile zurückgehalten werden.Since January 1st, 1993 there have been new gas stations in Germany vehicle refueling systems for the return of health-endangering fuel vapors (Gas recirculation) mandatory. For existing petrol stations each apply transition periods of three to five years after fuel sales. With gas recirculation, with which the escape of harmful gases (especially benzene in unleaded petrol) is to be prevented when refueling the vehicle, is on the nozzle a proboscis is provided with a suction line for gas recirculation is connected from the vehicle tank to the underground storage tank. The proboscis is slipped over the filler neck when refueling the vehicle. The suction the gases come from a pump or, after gas-tight completion of the Suction line on the tank neck with a rubber sleeve, by means of pressure compensation. The extracted gases are usually returned to the storage container and condense there due to the low temperatures in the storage container. With With the help of gas recirculation systems, about 70% of the volatile fuel components be held back.

Bei den bekannten Gasrückführungsanlagen an Kraftstofftanksäulen tritt häufig das Problem auf, dass es zu Ausfällen der Anlagen kommt. In diesen Fällen werden die gesundheitsgefährdenden Gase nicht in den Vorratsbehälter zurückgeführt, sondern sie verflüchtigen sich in die Atmosphäre. Der eigentlich mit Hilfe der Gasrückführungen erwünschte Effekt des Gesundheits- bzw. Umweltschutzes tritt nicht ein; vielmehr tritt in diesem Fall unvermindert viel Gas wie bei einer Kraftstofftanksäule ohne Gasrückführungsanlage aus. Da die austretenden Gase nicht sichtbar sind, ist weder für den Benutzer der Kraftstofftanksäule noch für das Tankstellenpersonal der Ausfall erkennbar. Eine Funktionsüberprüfung der Gasrückführungsanlage an Kraftstofftanksäulen ist nur mit großem Aufwand durchführbar.This often occurs in the known gas recirculation systems on fuel tank columns Problem on that the equipment fails. In these cases, the gases that are hazardous to health are not returned to the storage container, but instead they evaporate into the atmosphere. The actually with the help of gas recirculation the desired effect of health and environmental protection does not occur; rather, in this case, there is an undiminished amount of gas as in a fuel tank column without gas recirculation system. Because the escaping gases are not visible neither for the user of the fuel tank column nor for the petrol station staff Failure recognizable. A functional check of the gas recirculation system on fuel tank columns can only be carried out with great effort.

Hier will die Erfindung Abhilfe schaffen. Der Erfindung liegt die Aufgabe zugrunde, eine Überwachung für Kraftstofftanksäulen zu schaffen, bei der ein Ausfall sowohl für die Benutzer der Kraftstofftanksäulen als auch das Tankstellenpersonal unmittelbar erkennbar ist. Gemäß der Erfindung wird diese Aufgabe dadurch gelöst, dass eine Vorrichtung zur Überwachung der Gasrückführung vorgesehen ist.The invention seeks to remedy this. The invention is based on the object to create a monitoring system for fuel tank columns in which a failure occurs for both the users of the fuel tank columns as well as the petrol station staff immediately is recognizable. According to the invention, this object is achieved in that a Device for monitoring the gas recirculation is provided.

Mit der Erfindung ist eine Überwachung für Gasrückführungsanlagen an Kraftstofftanksäulen geschaffen, bei der ein möglicher Ausfall der Gasrückführung aufgrund der ständigen Überwachung unmittelbar sichtbar ist. Sowohl die Benutzer der Kraftstofftanksäulen als auch das Tankstellenpersonal ist dadurch gewarnt. Durch die Überwachungsvorrichtung kann eine automatische Abschaltung der Kraftstofftanksäule erfolgen, um eine Gesundheits- bzw. Umweltgefährdung zu vermeiden. With the invention is a monitoring for gas recirculation systems on fuel tank columns created in which a possible failure of the gas recirculation due to constant surveillance is immediately visible. Both the users of the fuel tank columns as well as the petrol station staff is warned. Through the monitoring device can automatic shutdown of the fuel tank column take place in order to avoid a health or environmental hazard.

In Ausgestaltung der Erfindung besteht die Vorrichtung im Wesentlichen aus einer Überwachungselektronik für die Gasrückführung. Hierdurch ist ein einfacher und zugleich zuverlässiger, modulartiger Aufbau der Vorrichtung geschaffen.In an embodiment of the invention, the device essentially consists of a Monitoring electronics for gas recirculation. This makes it easier and at the same time created reliable, modular structure of the device.

In Weiterbildung der Erfindung ist ein Magnetventil an die Überwachungselektronik angeschlossen. Hierdurch kann die Überwachungselektronik zuverlässig und schnell im Falle einer Funktionsstörung des Magnetventils reagieren.In a further development of the invention, a solenoid valve is connected to the monitoring electronics connected. This enables the monitoring electronics to be reliable and fast react in the event of a malfunction of the solenoid valve.

In anderer Weiterbildung der Erfindung weist die Überwachungselektronik ein Display auf. Mit Hilfe des Displays können bei einer Funktionsstörung Fehlermeldungen angezeigt werden, wodurch die Instandsetzung vereinfacht wird. Auch ist die Wartung mit Hilfe der im Display anzeigbaren Meldungen vereinfacht.In another development of the invention, the monitoring electronics have a display on. With the help of the display, error messages can be displayed in the event of a malfunction be made, which simplifies the repair. Maintenance is also included Simplified with the help of the messages shown on the display.

Vorteilhaft sind an Ausgängen der Überwachungselektronik Kontrolleuchten und/oder akustische Melder angeschlossen. Mit Hilfe der Kontrolleuchten und/oder akustischen Melder ist sowohl die Funktionsbereitschaft als auch eine Funktionsstörung sowohl für die Benutzer der Tankanlage als auch für das Tankstellenpersonal problemlos und weithin sichtbar bzw. hörbar.Indicator lights and / or at the outputs of the monitoring electronics are advantageous acoustic detector connected. With the help of the indicator lights and / or acoustic The detector is both operational readiness and a malfunction for the users of the tank system as well as for the petrol station staff without problems and widely visible or audible.

Andere Ausgestaltungen und Weiterbildungen sind in den übrigen Unteransprüchen angegeben. Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend im einzelnen beschrieben. Es zeigen:

Fig. 1
die schematische Darstellung einer Kraftstofftanksäule,
Fig. 2
einen Blockschaltplan der Überwachungsvorrichtung der Gasrückführung und
Fig. 3
die Darstellung der Arbeitsweise der Überwachungsvorrichtung anhand eines Flussdiagramms.
Other refinements and developments are specified in the remaining subclaims. An embodiment of the invention is shown in the drawing and is described in detail below. Show it:
Fig. 1
the schematic representation of a fuel tank column,
Fig. 2
a block diagram of the gas recirculation monitoring device and
Fig. 3
the representation of the operation of the monitoring device using a flowchart.

Die als Ausführungsbeispiel gewählte Kraftstofftanksäule 1 ist in einer Tankstelle angeordnet und mit einer Gasrückführungsanlage (GRFA) ausgestattet. Sie steht über eine Kraftstoffleitung 2 mit einem korrosionssicheren Vorratstank 3 in Verbindung. The fuel tank column 1 selected as an exemplary embodiment is arranged in a gas station and equipped with a gas recirculation system (GRFA). It stands over a fuel line 2 with a corrosion-proof storage tank 3 in connection.

In dem Vorratstank 3 ist der Kraftstoff gekühlt gelagert. In der Leitung 2 ist eine Pumpe 4 angeordnet, die den Kraftstoff aus dem Vorratstank 3 in Richtung der Kraftstofftanksäule 1 fördert. In der Kraftstofftanksäule 1 ist eine Durchflussmeßeinrichtung 5 vorgesehen, bei der es sich im Ausführungsbeispiel um einen Kolbenmeßer handelt. Im Anschluss an die Durchflussmeßeinrichtung 5 ist an die Kraftstoffleitung 2 ein Zapfschlauch 6 angeschlossen, der in einer Zapfpistole 7 endet.The fuel is stored cooled in the storage tank 3. In line 2 is one Pump 4 arranged that the fuel from the storage tank 3 in the direction of Fuel tank column 1 promotes. A flow measuring device is in the fuel tank column 1 5 provided, which in the exemplary embodiment is a Piston knife acts. Following the flow measuring device 5 is to the Fuel line 2 is connected to a fuel nozzle 6, which is in a fuel nozzle 7 ends.

Die Gasrückführungsanlage (GRFA) verbindet die Zapfpistole 7 mit dem Tank 3. Hierzu weist die Zapfpistole 7 einen Saugrüssel 8 auf, der über einen Gasrückführungsschlauch 9 mit der Tanksäule 1 verbunden ist. Im Bereich der Tanksäule 1 ist der Schlauch 9 an eine Leitung 10 zur Gasrückführung angeschlossen. In der Leitung 10 ist eine Pumpe 11, die im Ausführungsbeispiel als Vakuumpumpe ausgebildet ist, angeordnet. Die Leitung 10 endet im Vorratstank 3. In Abwandlung des Ausführungsbeispiels kann das aufgefangene Gas auch in einem vom Vorratstank 3 separaten Tank gesammelt werden. Die Gasrückführungsanlage (GRFA) umfasst weiterhin eine Steuerelektronik 13, ein Magnetventil 15, das in der Leitung 10 angeordnet ist, sowie ein Netzteil 16.The gas recirculation system (GRFA) connects the nozzle 7 to the tank 3. For this purpose, the nozzle 7 has a suction nozzle 8 which is connected to a gas return hose 9 is connected to the fuel pump 1. In the area of the fuel pump 1 the hose 9 is connected to a line 10 for gas recirculation. On the line 10 is a pump 11, which in the exemplary embodiment is designed as a vacuum pump, arranged. The line 10 ends in the storage tank 3. In a modification of the embodiment can the gas collected in a separate from the storage tank 3 Tank to be collected. The gas recirculation system (GRFA) also includes one Control electronics 13, a solenoid valve 15, which is arranged in line 10, and a power supply 16.

An der Gasrückführungsanlage ist eine Vorrichtung 12 zur Überwachung der Gasrückführung vorgesehen. Die Vorrichtung 12 besteht im Wesentlichen aus einer Überwachungselektronik 14 für die Gasrückführung.A device 12 for monitoring the gas recirculation is located on the gas recirculation system intended. The device 12 essentially consists of monitoring electronics 14 for gas recirculation.

Das Netzteil 16 weist einen geerdeten Anschluss PE und einen Wechselstromanschluss von 230 V auf (AC 230 V). Das Netzteil 16 steht einerseits mit der Steuerelektronik 13 in Verbindung, andererseits mit der Überwachungselektronik 14 für die Gasrückführung. Auch die Steuerelektronik 13 ist mit der Überwachungselektronik 14 für die Gasrückführung verbunden. Darüber hinaus steht die Steuerelektronik 13 mit dem Magnetventil 15 in Verbindung, das in der Leitung 10 der Gasrückführung angeordnet ist. The power supply 16 has a grounded connection PE and an AC connection from 230 V to (AC 230 V). The power supply 16 is on the one hand with the control electronics 13 in connection, on the other hand with the monitoring electronics 14 for the Gas recirculation. The control electronics 13 is also with the monitoring electronics 14 connected for gas recirculation. In addition, the control electronics 13 is also available the solenoid valve 15 in connection, which is in line 10 of the gas recirculation is arranged.

Die Überwachungselektronik 14 für die Gasrückführung weist ein Display 141 auf. Sie ist darüber hinaus mit Eingängen E1 bis E6, die zur Überwachung der an die einzelnen Eingänge angeschlossen Bauteile dienen, und mit Ausgängen A1 bis A4, die zur Steuerung der an die einzelnen Ausgänge angeschlossen Bauteile dienen, versehen.The monitoring electronics 14 for the gas recirculation has a display 141. she is also with inputs E1 to E6, which are used to monitor the individual Components connected to inputs serve, and with outputs A1 to A4, which are used for Control the components connected to the individual outputs.

Über den Eingang E1 ist die Verbindung mit der Steuerelektronik 13 hergestellt; mit dem Eingang E2 die Verbindung mit dem Netzteil 16. Über die Verbindung des Netzteils 16 mit dem Eingang E2 wird die Vorrichtung 12, inklusive Überwachungselektronik 14 und der angeschlossenen Bauteile mit Strom aus dem Netzteil 16 gespeist. In der Verbindung von Netzteil 16 und Eingang E2 ist ein Reset-Taster S2 angeordnet, mit dem die Überwachung auf Null fahrbar ist. Der Eingang E3 verbindet die Überwachungselektronik 14 mit der in der Gasleitung 10 der Gasrückführung angeordneten Pumpe 11. In der Verbindung zwischen dem Eingang E3 der Elektronik 14 und der Pumpe 11 ist ein Unterdruckwächter 111 angeordnet. Der Unterdruckwächter 111 ist im Ausführungsbeispiel in Form eines Druckschalters ausgebildet und ist explosionsgeschützt. Der Unterdruckwächter 111 kann auch als Gasmeßsonde ausgebildet sein, um analoge Meßwerte des Gases ermitteln zu können. Der Eingang E4 ist an das Magnetventil 15 angeschlossen. Mit dem Eingang E5 ist die Überwachungselektronik 14 an einen, in der Zapfpistole 7 vorgesehenen Zapfventilschalter 71 und mit dem Eingang E6 an die Durchflussmesseinrichtung 5 angeschlossen.The connection to the control electronics 13 is established via the input E1; With the input E2 the connection to the power supply 16. Via the connection of the power supply 16 with the input E2 is the device 12, including monitoring electronics 14 and the connected components with power from the power supply unit 16 fed. There is a reset button S2 in the connection between power supply 16 and input E2 arranged with which the monitoring can be driven to zero. The input E3 connects the monitoring electronics 14 with the gas recirculation in the gas line 10 arranged pump 11. In the connection between the input E3 of the electronics 14 and the pump 11, a vacuum monitor 111 is arranged. The vacuum monitor 111 is formed in the embodiment in the form of a pressure switch and is explosion-proof. The vacuum monitor 111 can also be used as a gas measuring probe be designed to be able to determine analog measured values of the gas. The entrance E4 is connected to the solenoid valve 15. With the input E5 is the monitoring electronics 14 to a nozzle valve switch 71 provided in the nozzle 7 and connected to the flow measuring device 5 with the input E6.

Der Ausgang A1 ist mit einer im Ausführungsbeispiel grünen Kontrolleuchte L1 verbunden; der Ausgang A2 mit einer im Ausführungsbeispiel roten Kontrolleuchte L2. Die Kontrolleuchten L1 und L2 sind bevorzugt im sichtbaren Bereich an der Kraftstofftanksäule 1 angeordnet. Der Ausgang A3 verbindet die Überwachungselektronik 14 mit einem Schalter S1. An den Ausgang A4 ist ein akustischer Melder in Form einer Hupe H angeschlossen. Die Hupe H sollte möglichst so im Bereich der Kraftstofftanksäule 1 angeordnet sein, dass ihr Ertönen im gesamten Tankstellenbereich wahrnehmbar ist. An Stelle einer Hupe kann auch ein Voice Module vorgesehen sein.The output A1 is connected to a green indicator light L1 in the exemplary embodiment; the output A2 with a red indicator light L2 in the exemplary embodiment. The indicator lights L1 and L2 are preferably in the visible area on the fuel tank column 1 arranged. The output A3 connects the monitoring electronics 14 with a switch S1. At the exit A4 there is an acoustic detector in the form of a Horn H connected. The horn H should, if possible, be in the area of the fuel tank column 1 be arranged so that their sound is perceptible in the entire petrol station area is. Instead of a horn, a voice module can also be provided.

Die Steuerelektronik 13 mißt über ihre Verbindungen mit der Überwachungselektronik 14 die Kraftstoffmenge, die durch die Meßeinrichtung 5 fließt. Gleichzeitig steuert die Steuerelektronik 13 das Magnetventil 15 in der Gasleitung 10. The control electronics 13 measures via their connections to the monitoring electronics 14 the amount of fuel flowing through the measuring device 5. At the same time controls the Control electronics 13, the solenoid valve 15 in the gas line 10.

Bei fehlerfreier Funktion der Gasrückführung leuchtet die Kontrollleuchte L1. Die Kraftstofftankanlage mit der Gasrückführung sind bereit. Wird nun ein Tankvorgang begonnen und der Zapfventilschalter 71 an der Zapfpistole 7 betätigt, wird über den Eingang E5 ein Signal an die Überwachungselektronik 14 gesendet. Gleichzeitig werden durch den in Gang gesetzten Tankvorgang von der Durchflussmeßeinrichtung 5 Impulse über den Eingang E6 an die Überwachungselektronik 14 weitergeleitet.If the gas recirculation is functioning correctly, the control lamp L1 lights up. The Fuel tank systems with gas recirculation are ready. Now is a refueling process started and the nozzle switch 71 on the nozzle 7 is operated, via the Input E5 sent a signal to the monitoring electronics 14. At the same time through the fueling process started by the flow measuring device 5 pulses forwarded to the monitoring electronics 14 via the input E6.

Mit Hilfe des Unterdruckwächters 111 bzw. der Gasmeßsonde wird der Durchfluss des Gases, das in der Regel aus Kraftstoffdämpfen und einem Luftgemisch besteht, durch die Vakuumpumpe 11 gemessen. Die Durchflussmenge des Gases ist abhängig von der Durchflussmenge des Kraftstoffs, die mittels der Durchflussmesseinrichtung 5 ermittelt wird. Die Vorrichtung 12, die über die Eingänge E3 und E6 die Durchflussmengen an Gas und Kraftstoff mißt, vergleicht die ermittelten Werte miteinander. Die Werte weisen bei normaler Funktion der Gasrückführung eine gewisse Proportionalität zueinander auf.With the help of the vacuum switch 111 or the gas measuring probe, the flow rate the gas, which usually consists of fuel vapors and an air mixture, measured by the vacuum pump 11. The flow rate of the gas is dependent the flow rate of the fuel, which is measured by means of the flow measuring device 5 is determined. The device 12 controls the flow rates via the inputs E3 and E6 of gas and fuel, compares the values determined. The Values show a certain proportionality with normal function of the gas recirculation to each other.

Stellt die Vorrichtung 12 beim Vergleich der Mengen einen signifikanten Unterschied zwischen dem theoretisch anfallenden Wert der Gasdurchflussmenge in Abhängigkeit einer bestimmten Kraftstoffdurchflussmenge und dem tatsächlichen Wert der Gasdurchflussmenge fest - beispielsweise bei Ausfall der Vakuumpumpe 11, der Steuerelektronik 13 oder des Magnetventils 15 -, wird ein Signal an die Leuchte L1 gesendet, so dass diese erlischt wobei die Kontrolleuchte L2 zu leuchten beginnt. Durch den Schalter S1 kann die Tanksäule automatisch nach Beendigung des laufenden Tankvorgangs abgeschaltet werden. Im Display 141 erscheint eine Fehlerdiagnose.The device 12 makes a significant difference when comparing the quantities depending on the theoretical value of the gas flow rate a certain fuel flow rate and the actual value of the gas flow rate fixed - for example in the event of failure of the vacuum pump 11, the control electronics 13 or the solenoid valve 15 -, a signal to the light L1 sent so that it goes out and the indicator light L2 starts to light up. With the switch S1, the fuel pump can automatically switch off after the be turned off during the refueling process. An error diagnosis appears on display 141.

Parallel zu der Warnung durch die Kontrolleuchte L2 sowie der Fehlerdiagnose mittels des Displays 141 leitet die Überwachungselektronik 14 ein Signal an den Ausgang A4, um eine akustische Meldung freizugeben.Parallel to the warning by the control lamp L2 and the error diagnosis by means of of the display 141, the monitoring electronics 14 passes a signal to the output A4 to release an acoustic message.

Mit Hilfe der Vorrichtung ist ein automatisches Abschalten der Tankanlage bei Ausfall der Gasrückführung möglich. Dadurch wird ein unkontrollierter und unbemerkter Austritt der umwelt- und gesundheitsschädlichen Gase verhindert. Darüber hinaus ist die Möglichkeit geschaffen, im Falle einer Funktionsstörung mit Hilfe des Displays auf einfache Weise eine Fehlerdiagnose durchzuführen.With the help of the device is an automatic shutdown of the tank system in case of failure gas recirculation possible. This will result in an uncontrolled and unnoticed exit of gases that are harmful to the environment and health. In addition, the Possibility created in the event of a malfunction using the display simple way to carry out a fault diagnosis.

Claims (10)

Überwachung für Kraftstofftanksäulen (1) mit einer Zapfpistole (7), die einen Saugrüssel (8) aufweist, wobei der Saugrüssel (8) über eine Leitung (10) mit einem Tank (3) in Verbindung steht und in der Leitung (10) eine Pumpe (11) angeordnet ist, dadurch gekennzeichnet, dass eine Vorrichtung (12) zur Überwachung der Gasrückführung vorgesehen ist.Monitoring for fuel tank columns (1) with a fuel nozzle (7), the one Has proboscis (8), the proboscis (8) via a line (10) is connected to a tank (3) and a pump (11) in the line (10) is arranged, characterized in that a device (12) for monitoring the gas recirculation is provided. Überwachung nach Anspruch 1, dadurch gekennzeichnet, dass die Vorrichtung (12) im Wesentlichen aus einer Überwachungselektronik (14) für die Gasrückführung besteht.Monitoring according to claim 1, characterized in that the device (12) essentially from monitoring electronics (14) for gas recirculation consists. Überwachung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Überwachungselektronik (14) ein Display (141) aufweist.Monitoring according to claim 1 or 2, characterized in that the Monitoring electronics (14) has a display (141). Überwachung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Überwachungselektronik (14) Eingänge (E1, ..., E6) aufweist, die zur Überwachung von an den einzelnen Eingängen angeschlossenen Bauteilen dienen.Monitoring according to one of claims 1 to 3, characterized in that the monitoring electronics (14) have inputs (E1, ..., E6) for monitoring of components connected to the individual inputs. Überwachung nach Anspruch 4, dadurch gekennzeichnet, dass an den Eingang (E3) ein Unterdruckwächter (111) angeschlossen ist.Monitoring according to claim 4, characterized in that at the entrance (E3) a vacuum monitor (111) is connected. Überwachung nach Anspruch 4, dadurch gekennzeichnet, dass an den Eingang (E3) eine Meßsonde angeschlossen ist. Monitoring according to claim 4, characterized in that at the entrance (E3) a measuring probe is connected. Überwachung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Überwachungselektronik (14) Ausgänge (A1, ..., A4) aufweist, die zur Steuerung von an den einzelnen Ausgängen angeschlossenen Bauteilen dienen.Monitoring according to one of claims 1 to 6, characterized in that the monitoring electronics (14) outputs (A1, ..., A4), which for Control components connected to the individual outputs. Überwachung nach Anspruch 7, dadurch gekennzeichnet, dass an den Ausgängen (A1, A2) Kontrolleuchten (L1, L2) angeschlossen sind.Monitoring according to claim 7, characterized in that at the outputs (A1, A2) control lights (L1, L2) are connected. Überwachung nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass an dem Ausgang (A4) ein akustischer Melder angeschlossen ist.Monitoring according to claim 7 or 8, characterized in that on the Output (A4) an acoustic detector is connected. Überwachung nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass an dem Ausgang (A3) ein Schalter (S1) angeschlossen ist.Monitoring according to one of claims 7 to 9, characterized in that a switch (S1) is connected to the output (A3).
EP99125025A 1999-08-17 1999-12-15 Control device for fuel vapour recovery Expired - Lifetime EP1077197B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19938918 1999-08-17
DE1999138918 DE19938918A1 (en) 1999-08-17 1999-08-17 Monitoring system for gas feedback at roadside petrol pumps; has control lamps or indicators, which are mounted at visible region of petrol pump, and which act to diagnose or to indicate faults
DE29914372U 1999-08-17
DE29914372U DE29914372U1 (en) 1999-08-17 1999-08-17 Gas recirculation monitoring device on petrol pumps

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EP1077197A1 true EP1077197A1 (en) 2001-02-21
EP1077197B1 EP1077197B1 (en) 2004-03-10

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AT (1) ATE261397T1 (en)
DE (1) DE59908813D1 (en)

Citations (7)

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US5040577A (en) * 1990-05-21 1991-08-20 Gilbarco Inc. Vapor recovery system for fuel dispenser
DE9206675U1 (en) * 1992-05-16 1993-06-17 Leybold AG, 6450 Hanau Device for extracting fuel vapors
US5269353A (en) * 1992-10-29 1993-12-14 Gilbarco, Inc. Vapor pump control
DE4313720C1 (en) * 1993-04-27 1994-10-06 Anton Ellinghaus Maschinenfabr Arrangement for ensuring the presence and attention of monitoring personnel when mineral oil products are discharged
DE29521160U1 (en) * 1995-07-11 1996-11-14 Honeywell Ag, 63067 Offenbach Device for operating a tank system
WO1997006095A1 (en) * 1995-08-10 1997-02-20 Schlumberger Industries S.A. Process for the recovery of steam emitted in a liquid distribution plant
US5860457A (en) * 1995-08-15 1999-01-19 Dresser Industries Gasoline vapor recovery system and method utilizing vapor detection

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Publication number Priority date Publication date Assignee Title
US5355915A (en) * 1990-12-11 1994-10-18 Gilbarco Vapor recovery improvements

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5040577A (en) * 1990-05-21 1991-08-20 Gilbarco Inc. Vapor recovery system for fuel dispenser
DE9206675U1 (en) * 1992-05-16 1993-06-17 Leybold AG, 6450 Hanau Device for extracting fuel vapors
US5269353A (en) * 1992-10-29 1993-12-14 Gilbarco, Inc. Vapor pump control
DE4313720C1 (en) * 1993-04-27 1994-10-06 Anton Ellinghaus Maschinenfabr Arrangement for ensuring the presence and attention of monitoring personnel when mineral oil products are discharged
DE29521160U1 (en) * 1995-07-11 1996-11-14 Honeywell Ag, 63067 Offenbach Device for operating a tank system
WO1997006095A1 (en) * 1995-08-10 1997-02-20 Schlumberger Industries S.A. Process for the recovery of steam emitted in a liquid distribution plant
US5860457A (en) * 1995-08-15 1999-01-19 Dresser Industries Gasoline vapor recovery system and method utilizing vapor detection

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ATE261397T1 (en) 2004-03-15
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