EP0473818A1 - Dispositif pour la régulation de l'alimentation en combustibles liquides d'un appareil de mesure de débit - Google Patents

Dispositif pour la régulation de l'alimentation en combustibles liquides d'un appareil de mesure de débit Download PDF

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Publication number
EP0473818A1
EP0473818A1 EP90116933A EP90116933A EP0473818A1 EP 0473818 A1 EP0473818 A1 EP 0473818A1 EP 90116933 A EP90116933 A EP 90116933A EP 90116933 A EP90116933 A EP 90116933A EP 0473818 A1 EP0473818 A1 EP 0473818A1
Authority
EP
European Patent Office
Prior art keywords
fuel
nozzle
gas
valve
sensor
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
EP90116933A
Other languages
German (de)
English (en)
Other versions
EP0473818B1 (fr
Inventor
Gert Dipl.-Ing. Miller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scheidt and Bachmann GmbH
Original Assignee
Scheidt and Bachmann GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Scheidt and Bachmann GmbH filed Critical Scheidt and Bachmann GmbH
Priority to AT90116933T priority Critical patent/ATE90070T1/de
Priority to DE9090116933T priority patent/DE59001631D1/de
Priority to ES199090116933T priority patent/ES2042163T3/es
Priority to EP90116933A priority patent/EP0473818B1/fr
Publication of EP0473818A1 publication Critical patent/EP0473818A1/fr
Application granted granted Critical
Publication of EP0473818B1 publication Critical patent/EP0473818B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B67D7/06—Details or accessories
    • B67D7/76—Arrangements of devices for purifying liquids to be transferred, e.g. of filters, of air or water separators
    • B67D7/763—Arrangements of devices for purifying liquids to be transferred, e.g. of filters, of air or water separators of air separators

Definitions

  • the invention relates to a device for regulating the supply of liquid fuels to a quantity measuring device for the delivery of the fuels with a gas separator arranged between a fuel pump and the quantity measuring device and with a valve which interrupts the inflow to the quantity measuring device and which, depending on the gas content, produces a valve generated by a nozzle Fuel jet is controlled, which branches off from the fuel flow behind the pressure port of the fuel pump.
  • a device of the type described above is known from the Austrian patent specification 227 112.
  • This known device prevents the quantity measuring device, for example a known piston counter, from being supplied with fuel mixed with gas bubbles and accordingly an incorrect quantity of fuel being measured.
  • a fuel jet is branched off from the fuel flow behind the pressure port of the fuel pump for this purpose, which is directed at a spring-loaded piston valve, which in turn controls a differential shut-off valve which is arranged between the fuel pump and the flow meter.
  • the bundled jet causes such a load on the piston spool that it is moved against the force of the spring loading it into a position in which the piston spool the differential shut-off valve in such a way controls that this releases the inflow to the flow meter.
  • the fuel jet contains a gas bubble fraction that exceeds a predetermined value
  • the force exerted on the piston valve by the fuel jet diverging as a result of the gas fraction is no longer sufficient to move it against the force of the spring loaded to the position mentioned above.
  • the spring pushes the spool into a position in which it closes the differential shut-off valve.
  • the fuel flow generated by the fuel pump to the quantity measuring device is consequently interrupted until the proportion of gas bubbles returns to a permissible value, which is separated in the gas separator.
  • both the spring-loaded piston valve and the differential shut-off valve controlled by this have a complicated structure, which not only requires a relatively expensive production, but also a complex adjustment work.
  • the effect of both components is wear-dependent, so that in addition to regular maintenance work, the wear parts must be replaced on a regular basis.
  • the invention has for its object to develop a device of the type described in such a way that the use of wear-free and simpler components results in a cheaper production of the device while increasing its functional reliability.
  • the solution to this problem by the invention is characterized in that the nozzle is directed to a sensor converting the pressure of the fuel jet into an electrical signal, which controls the valve designed as a solenoid valve in the line leading to the quantity measuring device via an electrical evaluation circuit.
  • the senor is formed by a piezo element which, according to a further feature of the invention, is arranged behind a calibrated opening.
  • the diameter of the calibrated opening corresponds to the diameter of the bundled fuel jet generated by the nozzle, as long as it does not contain any gas bubbles. This results in very reliable monitoring of the proportion of gas bubbles in the fuel flow generated by the fuel pump.
  • the nozzle is arranged in the fuel outlet area of the gas separator.
  • the fuel jet used to control the solenoid valve is thus branched off at a point on the gas separator where the fuel supplied to the quantity measuring device may normally no longer contain any gas bubbles. In this way, the effect of the gas separator is monitored with the device according to the invention.
  • the gas separator has a tubular housing provided with a tangential inlet and outlet and a gas collecting tube penetrating the outlet and projecting centrally into the tubular housing, the nozzle being arranged in the outlet of the tubular housing. Due to the tangential inlet and outlet, a swirl is generated in the tubular housing of the gas separator, which ensures that the fuel supplied to the gas separator flows through the tubular housing on a helical path, whereas the gas portion in collects the center of the tubular housing so that the gas can be drawn off via the centrally arranged gas collecting tube.
  • the nozzle in the outlet of the tubular housing for generating the fuel jet is normally supplied with degassed fuel in this way, so that the solenoid valve is only closed via the sensor acted upon by the fuel jet if the proportion of gas bubbles in the outlet of the gas separator exceeds the permissible value .
  • the invention proposes to design the electronic evaluation circuit as a microcomputer which, in order to control the solenoid valve, evaluates the pressure curve recorded by the sensor over time in comparison with values stored in a table or calculated on the basis of mathematical functions. In this way, it is possible with the invention to disregard short-term disruptions in the gas separation if the disruptions are those which have no significant influence on the fuel quantities determined by the quantity measuring device.
  • FIGS. 1 and 2 shows a lower housing part 1, in which a fuel pump 2 designed as a cell pump is arranged.
  • This fuel pump 2 which is driven by an engine (not shown), conveys the fuel emerging from the pressure connection 3 of the fuel pump 2 into a gas separator 4 which is arranged within an upper housing part 5 placed on the lower housing part 1.
  • the gas separator 4 has a tubular housing 6 which is connected to the pressure port 3 of the fuel pump 2 by means of a tangential inlet 7.
  • the fuel emerging from the pressure port 3 of the fuel pump 2 is therefore given a swirl so that the fuel flows through the tubular housing 6 along a helical path, as shown in FIG.
  • an outlet 8 is provided, which supplies the fuel to a connecting channel 9 in the lower housing part.
  • the generation of the swirl in the inlet 7 can best be seen in FIG. 2, which among other things shows a partial section through the inlet 7.
  • any gas bubbles present in the fuel are concentrated in the center of the tubular housing 6, as is indicated in FIG.
  • These gas bubbles are withdrawn from the fuel through a gas collecting tube 10 which penetrates the outlet 8 and projects centrally into the tubular housing 6 and which is connected at its end mounted in the outlet 8 via an opening 11 to the gas collecting space formed by the housing upper part 5.
  • the gas extracted from the fuel is discharged from this gas collecting space via a discharge line 12.
  • the degassed fuel entering the connecting channel 9 is fed via a valve designed as a solenoid valve 13 to a quantity measuring device not shown in the drawing.
  • This solenoid valve 13 interrupts the inflow to the quantity measuring device as soon as the gas portion of the fuel leaving the gas separator 4 exceeds a permissible value.
  • a fuel jet is generated within the gas separator 4 by a nozzle 14, which controls the solenoid valve 13 in the line running from the gas separator 4 to the quantity measuring device.
  • the fuel jet generated by the nozzle 14 is directed at a sensor 15, which is preferably formed by a piezo element.
  • This sensor 15 is able to convert the pressure of the fuel jet into an electrical signal, which is fed to an electronic evaluation circuit 17 via a measuring line 16.
  • This electronic evaluation circuit 17 is preferably a microcomputer which controls the solenoid valve 13 via a control line 18.
  • the pressure of the jet impinging on the sensor 15 generates an electrical signal which is recognized in the evaluation circuit 17 as a signal for keeping the solenoid valve 13 open.
  • the fuel jet generated by the nozzle 14 contains a larger proportion of gas, the otherwise bundled fuel jet expands, which leads to a reduction in the pressure exerted on the sensor 15.
  • the sensor 15 therefore sends a reduced signal to the evaluation circuit 17 via the measuring line 16, which, after checking this signal, closes the solenoid valve 13 via the control line 18 as long as the pressure drop determined by the sensor 15 continues. This prevents fuel with an increased gas content from being supplied to the quantity measuring device connected downstream of the solenoid valve 13, which results in incorrect measured values for the quantity measurement.
  • the senor 15 which is preferably formed by a piezo element, can be arranged behind a calibrated opening 19 which, in the exemplary embodiment according to FIG. 1, is formed inside the wall of the upper housing part 5.
  • the electronic evaluation circuit 17 formed by a microcomputer is also able, with a corresponding design, not only to evaluate the directly recorded electrical signals resulting from the pressure of the fuel jet, but also the pressure curve recorded by the sensor 15 over time in comparison with that stored in a table or values calculated on the basis of mathematical functions. In this way it is possible to recognize short-term pressure drops at the sensor 15 as such and to avoid unnecessary brief opening and closing of the solenoid valve 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Volume Flow (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Feeding And Controlling Fuel (AREA)
EP90116933A 1990-09-04 1990-09-04 Dispositif pour la régulation de l'alimentation en combustibles liquides d'un appareil de mesure de débit Expired - Lifetime EP0473818B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT90116933T ATE90070T1 (de) 1990-09-04 1990-09-04 Vorrichtung zur regelung der zufuhr von fluessigen kraftstoffen zu einem mengenmessgeraet.
DE9090116933T DE59001631D1 (de) 1990-09-04 1990-09-04 Vorrichtung zur regelung der zufuhr von fluessigen kraftstoffen zu einem mengenmessgeraet.
ES199090116933T ES2042163T3 (es) 1990-09-04 1990-09-04 Dispositivo para la regulacion de la alimentacion de carburantes liquidos a un aparato de medicion de cantidades.
EP90116933A EP0473818B1 (fr) 1990-09-04 1990-09-04 Dispositif pour la régulation de l'alimentation en combustibles liquides d'un appareil de mesure de débit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90116933A EP0473818B1 (fr) 1990-09-04 1990-09-04 Dispositif pour la régulation de l'alimentation en combustibles liquides d'un appareil de mesure de débit

Publications (2)

Publication Number Publication Date
EP0473818A1 true EP0473818A1 (fr) 1992-03-11
EP0473818B1 EP0473818B1 (fr) 1993-06-02

Family

ID=8204429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90116933A Expired - Lifetime EP0473818B1 (fr) 1990-09-04 1990-09-04 Dispositif pour la régulation de l'alimentation en combustibles liquides d'un appareil de mesure de débit

Country Status (4)

Country Link
EP (1) EP0473818B1 (fr)
AT (1) ATE90070T1 (fr)
DE (1) DE59001631D1 (fr)
ES (1) ES2042163T3 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0532202A3 (en) * 1991-09-13 1993-07-14 Gilbarco Limited A fuel dispenser
US5363988A (en) * 1991-09-13 1994-11-15 Gilbarco Limited Fuel dispenser controlled in dependence on an electrical signal from a gas detector of the dispenser
WO1995011193A1 (fr) * 1993-10-19 1995-04-27 Dong Nam Co., Ltd. Appareil d'approvisionnement en huiles pour camions-citernes de transport d'huiles
CN1037085C (zh) * 1993-05-17 1998-01-21 D·S·l·约瑟·勃勒脱威许有限公司 用于饮料罐或饮料桶上的活嘴
WO1998050303A1 (fr) * 1997-05-05 1998-11-12 Delaware Capital Formation, Inc. Systeme de distribution de carburant separant l'air
WO2000076910A1 (fr) * 1999-06-11 2000-12-21 Delaware Capital Formation, Inc. Systeme et procede de desaeration et de distribution de carburant liquide
WO2005036291A1 (fr) * 2003-10-11 2005-04-21 Veeder-Root Company Procede et systeme pour determiner et surveiller l'efficacite de distribution d'un point de distribution de carburant dans l'environnement d'une station-service
EP1742026A1 (fr) * 2005-07-08 2007-01-10 Dresser Wayne Aktiebolag Compteur à gaz
US7814942B2 (en) 2005-06-29 2010-10-19 Dresser, Inc. Vapor recovery system for low temperatures
WO2011122965A3 (fr) * 2010-03-31 2011-11-24 Swashpump Technologies Limited Module de pompe à carburant pour distributeurs de carburant

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT227112B (de) * 1961-03-18 1963-04-25 Scheidt & Bachmann Ag Gasmeßverhüter für Tankanlagen zur Abgabe flüssiger Treibstoffe
EP0357513A1 (fr) * 1988-09-02 1990-03-07 Schlumberger Industries Distributeur d'hydrocarbure comprenant des moyens de contrôle de la teneur en gaz

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT227112B (de) * 1961-03-18 1963-04-25 Scheidt & Bachmann Ag Gasmeßverhüter für Tankanlagen zur Abgabe flüssiger Treibstoffe
EP0357513A1 (fr) * 1988-09-02 1990-03-07 Schlumberger Industries Distributeur d'hydrocarbure comprenant des moyens de contrôle de la teneur en gaz

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0532202A3 (en) * 1991-09-13 1993-07-14 Gilbarco Limited A fuel dispenser
US5363988A (en) * 1991-09-13 1994-11-15 Gilbarco Limited Fuel dispenser controlled in dependence on an electrical signal from a gas detector of the dispenser
CN1037085C (zh) * 1993-05-17 1998-01-21 D·S·l·约瑟·勃勒脱威许有限公司 用于饮料罐或饮料桶上的活嘴
WO1995011193A1 (fr) * 1993-10-19 1995-04-27 Dong Nam Co., Ltd. Appareil d'approvisionnement en huiles pour camions-citernes de transport d'huiles
WO1998050303A1 (fr) * 1997-05-05 1998-11-12 Delaware Capital Formation, Inc. Systeme de distribution de carburant separant l'air
US5884809A (en) * 1997-05-05 1999-03-23 Delaware Capital Formation, Inc. Air separating fuel dispensing system
WO2000076910A1 (fr) * 1999-06-11 2000-12-21 Delaware Capital Formation, Inc. Systeme et procede de desaeration et de distribution de carburant liquide
US6179163B1 (en) * 1999-06-11 2001-01-30 Delaware Capital Formation, Inc. System and method for evaluating the presence of air in a liquid-state fuel stream
WO2005036291A1 (fr) * 2003-10-11 2005-04-21 Veeder-Root Company Procede et systeme pour determiner et surveiller l'efficacite de distribution d'un point de distribution de carburant dans l'environnement d'une station-service
US6975964B2 (en) 2003-10-11 2005-12-13 Veeder-Root Company Method and system for determining and monitoring the dispensing efficiency of a fuel dispensing point in a service station environment
US7814942B2 (en) 2005-06-29 2010-10-19 Dresser, Inc. Vapor recovery system for low temperatures
EP1742026A1 (fr) * 2005-07-08 2007-01-10 Dresser Wayne Aktiebolag Compteur à gaz
US7963423B2 (en) 2005-07-08 2011-06-21 Dresser, Inc. Fuel dispensing unit with gas sensor
WO2011122965A3 (fr) * 2010-03-31 2011-11-24 Swashpump Technologies Limited Module de pompe à carburant pour distributeurs de carburant

Also Published As

Publication number Publication date
EP0473818B1 (fr) 1993-06-02
ATE90070T1 (de) 1993-06-15
DE59001631D1 (de) 1993-07-08
ES2042163T3 (es) 1993-12-01

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