WO2018122873A1 - Distributeur de carburant doté d'un agencement de protection de l'alimentation électrique - Google Patents

Distributeur de carburant doté d'un agencement de protection de l'alimentation électrique Download PDF

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Publication number
WO2018122873A1
WO2018122873A1 PCT/IN2017/050622 IN2017050622W WO2018122873A1 WO 2018122873 A1 WO2018122873 A1 WO 2018122873A1 IN 2017050622 W IN2017050622 W IN 2017050622W WO 2018122873 A1 WO2018122873 A1 WO 2018122873A1
Authority
WO
WIPO (PCT)
Prior art keywords
power supply
fuel
power
fuel dispenser
protection arrangement
Prior art date
Application number
PCT/IN2017/050622
Other languages
English (en)
Inventor
Nilesh GAWALI
Vikas VESHAN
Original Assignee
Gilbarco Veeder Root India Pvt. Ltd.
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 Gilbarco Veeder Root India Pvt. Ltd. filed Critical Gilbarco Veeder Root India Pvt. Ltd.
Publication of WO2018122873A1 publication Critical patent/WO2018122873A1/fr

Links

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
    • 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
    • B67D7/3218—Arrangements of safety or warning devices; Means for preventing unauthorised delivery of liquid relating to emergency shut-off means
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F13/00—Coin-freed apparatus for controlling dispensing or fluids, semiliquids or granular material from reservoirs
    • G07F13/02—Coin-freed apparatus for controlling dispensing or fluids, semiliquids or granular material from reservoirs by volume
    • G07F13/025—Coin-freed apparatus for controlling dispensing or fluids, semiliquids or granular material from reservoirs by volume wherein the volume is determined during delivery
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F15/00—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity
    • G07F15/003—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity for electricity
    • G07F15/005—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity for electricity dispensed for the electrical charging of vehicles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations

Definitions

  • the present invention relates generally to equipment used in fuel dispensing environments. More specifically, embodiments of the present invention relate to a fuel dispenser having a power supply protection arrangement.
  • Fuel dispensers may be subject to variations in AC power supply connectivity and/or quality. Additionally, fuel dispensers may suffer from component failures, due to such events as power glitches, power surges, lightning strike, electrostatic discharge (ESD), or the like. In some fueling environments, such as rural areas or areas with a developing power grid, power supply failures and transients may cause one or more fuel dispensers to fail. This results in a loss of revenue to the fueling station operator. In areas where there are few qualified technicians to repair the dispenser, the loss of revenue is more acute.
  • the present invention recognizes and addresses various considerations of prior art constructions and methods.
  • the present invention provides a fuel dispenser including a fuel nozzle configured to be connected to a vehicle fuel system, fuel piping configured to transfer fuel from a fuel storage tank associated with the fuel dispenser through the fuel nozzle into the vehicle fuel system, as well as fuel handling components operative to control and measure flow of the fuel through the fuel piping.
  • the fuel dispenser further includes a suitable power supply such as a switch mode power supply configured to receive alternating current power from a mains power source and provide direct current power for one or more direct current components associated with the fuel dispenser.
  • a power supply protection arrangement configured to limit voltage in excess of a predetermined voltage threshold from reaching the power supply is also provided.
  • FIG. 1 illustrates a perspective view of an exemplary fuel dispenser in accordance with an embodiment of the present invention.
  • FIG. 2 illustrates a diagrammatic representation of internal components of the fuel dispenser of FIG. 1 according to an embodiment of the present invention.
  • FIG. 3 illustrates a block diagram of an example of a fuel dispenser power supply and associated protection arrangement according to an embodiment of the present invention.
  • FIG. 4 illustrates a block diagram of one example of a power supply protection arrangement according to an embodiment of the present invention.
  • FIGs. 5A and 5B show operation of the circuit of FIG. 4 in normal and overvoltage conditions, respectively.
  • a fuel dispenser may include a power supply protection arrangement configured to prevent or limit excessive voltage from reaching a power supply, which may otherwise cause damage to or malfunction of the power supply.
  • the power supply protection arrangement may be configured to monitor supplied AC voltage and interrupt the voltage source in response to the voltage exceeding a predetermined voltage threshold.
  • the power supply protection arrangement may include a switch, which may be opened in response to the excessive voltage and closed in response to the voltage returning to a suitable value.
  • the power supply protection arrangement may also include one or more energy storage components, such as at least one suitable capacitor to supply power during the interruption of the external power source.
  • the power supply protection circuit may also include one or more surge suppression components configured to shunt, clamp, or otherwise dissipate undesired electrical transients, such as voltage spike of about 0.5 kV to about 4 kV.
  • the surge suppression components may include, for example, one or more of a metal-oxide varistor (MOV), a gas discharge tube (GDT) and a thyristor surge protector device (TSPD).
  • MOV metal-oxide varistor
  • GDT gas discharge tube
  • TSPD thyristor surge protector device
  • embodiments of the present invention may be particularly suitable for use with a fuel dispenser in a retail service station environment, and the below discussion will describe some preferred embodiments in that context. However, those of skill in the art will understand that the present invention is not so limited. In fact, it is contemplated that embodiments of the present invention may be used with any fluid dispensing environment and with other fluid dispensers. For example, embodiments of the present invention may also be used with diesel exhaust fluid (DEF) dispensers, compressed natural gas (CNG) dispensers, and liquefied petroleum gas (LPG) and liquid natural gas (LNG) applications, among others.
  • DEF diesel exhaust fluid
  • CNG compressed natural gas
  • LPG liquefied petroleum gas
  • LNG liquid natural gas
  • FIG. 1 is a perspective view of an exemplary fuel dispenser 10 according to an embodiment of the present invention.
  • Fuel dispenser 10 includes a housing 12 with a flexible fuel hose 14 extending therefrom.
  • Fuel hose 14 terminates in a fuel nozzle 16 adapted to be inserted into a fill neck of a vehicle's fuel tank.
  • Fuel nozzle 16 includes a manually-operated fuel valve.
  • Various fuel handling components, such as valves and meters, are also located inside of housing 12. These fuel handling components allow fuel to be received from underground piping and delivered through fuel hose 14 and fuel nozzle 16 to a vehicle's fuel system (fuel tank).
  • Fuel dispenser 10 has a customer interface 18.
  • Customer interface 18 may include an information display 20 relating to an ongoing fueling transaction that shows the amount of fuel dispensed and the price of the dispensed fuel. Further, customer interface 18 may include a display 22 that provides instructions to the customer regarding the fueling transaction. Display 22 may also provide advertising, merchandising, and multimedia presentations to a customer, and may allow the customer to purchase goods and services other than fuel at the dispenser.
  • FIG. 2 is a schematic illustration of internal fuel flow components of fuel dispenser 10 according to an embodiment of the present invention.
  • fuel may travel from an underground storage tank (UST) via main fuel piping 24 to fuel dispenser 10 and nozzle 16 for delivery.
  • UST underground storage tank
  • fuel dispenser 10 may have an internal pumping unit to draw fuel from the UST.
  • STP submersible turbine pump associated with the UST may be used to push fuel to the fuel dispenser 10.
  • shear valve 26 is designed to close the fuel flow path in the event of an impact to fuel dispenser 10.
  • Shear valve 26 contains an internal fuel flow path to carry fuel from main fuel piping 24 to internal fuel piping 28.
  • valve 30 may be positioned downstream of the flow meter 32.
  • valve 30 may be a suitable proportional solenoid controlled valve.
  • Control system 34 can control the opening and closing of flow control valve 30 to either allow fuel to flow or not flow through meter 32 and on to the hose 14 and nozzle 16.
  • Control system 34 may comprise any suitable electronics with associated memory and software programs running thereon whether referred to as a processor, microprocessor, controller, microcontroller, or the like.
  • control system 34 typically includes a pump control node (PCN) and a "card reader in dispenser” (CRIND) module.
  • PCN pump control node
  • CRIND card reader in dispenser
  • the PCN includes the hardware and software necessary to control the dispenser's hydraulic functions.
  • the CRIND module includes the hardware and software necessary to support any payment processing and peripheral interfaces, such as PIN pad, card reader, and the displays(s).
  • the CRIND module may, for example, inform the PCN that a transaction has been authorized, which in turn causes valve 30 to open.
  • control system 34 may be in electronic communication with a site controller located at the fueling site.
  • the site controller which may take the form of or be incorporated into a point-of-sale (POS) system, communicates with control system 34 to control authorization of fueling transactions and other conventional activities.
  • POS point-of-sale
  • a vapor barrier 36 delimits hydraulics compartment 38 of fuel dispenser 10, and control system 34 is located in electronics compartment 40 above vapor barrier 36.
  • Fluid handling components, such as flow meter 32 are located in hydraulics compartment 38.
  • flow meter 32 may be any suitable flow meter known to those of skill in the art, including positive displacement, inferential, and Coriolis mass flow meters, among others.
  • Meter 32 typically comprises electronics 42 that communicates information representative of the flow rate or volume to control system 34.
  • electronics 42 may typically include a pulser as known to those skilled in the art.
  • control system 34 can update the total liters (or gallons) dispensed and the price of the dispensed fuel on information display 20.
  • Flow switch 44 provides a flow switch communication signal to control system 34 when fuel is flowing through flow meter 32.
  • the flow switch communication signal indicates to control system 34 that fuel is actually flowing in the fuel delivery path and that subsequent signals from flow meter 32 are due to actual fuel flow.
  • a blend manifold may also be provided downstream of flow switch 44.
  • the blend manifold receives fuels of varying octane levels from the various USTs and ensures that fuel of the octane level selected by the customer is delivered.
  • fuel dispenser 10 may comprise a vapor recovery system to recover fuel vapors through nozzle 16 and hose 14 to return to the UST.
  • fuel dispenser 10 includes a power distribution system 100 in accordance with the present invention.
  • Power distribution system 100 preferably receives AC mains power at a known nominal level and provides both AC and DC power to the various components inside the dispenser.
  • the AC power needed by some of the internal components may be at the same or a different voltage level than the input voltage.
  • the DC voltage can be supplied by a suitable power supply, such as a switch mode power supply (SMPS) 102, at a particular voltage level equal to or slightly higher than the level required for the various DC-powered components.
  • SMPS switch mode power supply
  • the SMPS can take AC or DC input and generates a DC output.
  • Each such DC-powered component may have an associated voltage regulator to provide the precise DC voltage level that it requires.
  • the AC power may be provided through a power supply protection circuit 200 configured to prevent an overvoltage condition at power supply 102.
  • power supply 102 receives AC power from an external AC power source 104, such as a mains supply associated with the gas station or other fueling environment.
  • the AC power source 104 may typically supply voltage at a level within the range of 98-240 VAC depending on the local available voltage.
  • the switch mode power supply may convert the AC power to DC power, such as 24 VDC for supplying DC-powered components within the dispenser, such as flow control valves, pump control signals, various other hydraulic components of the fuel dispenser, thermal printers, or the like.
  • a fuel dispenser power distribution system 100 includes the switch mode power supply (SMPS) 102 and power supply protection arrangement 200.
  • the power supply protection circuit 200 may be electrically connected in series between the external AC power source 104 and the power supply 102. As noted above, the power supply protection circuit 200 may receive AC power between 98 VAC and 240 VAC based on the local available voltage.
  • the power supply protection circuit 200 may be configured to limit or prevent voltage in excess of a predetermined voltage threshold from reaching the power supply 102.
  • power supply protection arrangement 200 may continue to provide an adequate voltage (for a period of time) in an under-voltage condition, such as less than 80 VAC, to allow uninterrupted operation of the fuel dispenser.
  • the power supply protection circuit 200 may also be configured to suppress a potentially damaging voltage surge, e.g., a voltage of between 0.5kV to 4.0 kV, appearing on the power supply line.
  • FIG. 4 illustrates a block diagram of exemplary circuitry which may comprise a power supply protection arrangement 200 in accordance with the present invention.
  • power supply protection arrangement 200 may nominally receive alternating current power between 98 VAC and 240 VAC from external AC power source 104.
  • Power supply protection arrangement 200 may include surge suppression components (labeled "surge suppressor 202") configured to prevent voltage spikes from reaching the power supply 102 and/or other downstream components.
  • surge suppressor 202 is operative to shunt, clamp, or otherwise dissipate large voltage transients, such as voltage spike, of about 0.500 kV to about 4 kV.
  • surge suppressor 202 may comprise a metal-oxide varistor (MOV), a thyristor surge protection device (TSPD), a gad discharge tube (GTD), or the like. Due to this fault current generated, the safety FUSE (which is mounted outside of this circuit) shall blow to avoid a fire hazard. But now this fault current will be generated only in case of very high energy spikes and not for the faulty overvoltage situation such as above 300 VAC.
  • MOV metal-oxide varistor
  • TSPD thyristor surge protection device
  • GTD gad discharge tube
  • surge suppressor 202 may degrade over its lifetime. The degradation of the surge suppressor 202 may be accelerated in response to exposure to large voltage spikes or transients.
  • a fuse such as a thermal fuse, may be electrically connected in series with the surge suppressor. In an instance in which degradation of the surge suppressor 202 causes an increase of current through the surge suppressor 202, the fuse 203 may open preventing excessive current or electrical shorts.
  • Other components of power supply protection arrangement 200 may include a voltage sensor 204, charge controller 206, switch 208, and energy storage component 210. Power supply switch 208 is configured to interrupt the incoming AC power when it exceeds a predetermined voltage threshold, such as a voltage exceeding 290 VAC.
  • the threshold voltage will generally depend on the particular characteristics of power supply 102. Such power supplies can generally tolerate some excessive voltage for short periods of time without damage. For example, a typical power supply that delivers 24 VDC up to 72 Watts may be able to withstand 300 VAC input for a maximum of 5 seconds and 2kV surge of 12 ⁇ 8 duration for up to approximately 50 times.
  • Power supply switch 208 may comprise a mechanical switch or an electronic switch, such as a silicon controlled rectifier (SCR), transistor, or the like. In some instances, power supply switch 208 may be configured to quickly open before damage occurs to the switch mode power supply 102, such as before 1 microsecond, after sensing AC power in excess of the predetermined voltage threshold.
  • SCR silicon controlled rectifier
  • Voltage sensor 204 is configured to sense or measure the voltage of the AC power supplied by the external AC power source 104. Voltage sensor 204 acts fast to trigger activation of charge controller 206. Charge controller 206 may open the power supply switch 208, such as by applying or removing a gating bias, which may cause the switch 208 to interrupt the AC power supplied to the switch mode power supply 102.
  • charge controller 206 may cause the power supply switch 208 to close in response to the AC power returning to a value less than the predetermined voltage threshold.
  • Charge controller 206 may cause a gate bias to be applied or removed to close the power supply switch 208.
  • the power supply protection arrangement 200 may also include one or more energy storage components 210, such as one or more capacitors.
  • the AC power may be utilized to charge the components 210 during normal operations.
  • components 210 may provide power to the switch mode power supply 102.
  • charge controller 206 provides controlling action which keeps charging the energy storage component(s) so as to supply the AC/DC power adequately so that the power supply can generate the rated output.
  • the switch in normal operation the switch is always "ON" and the charge controller is disabled.
  • the output capacitor is fully charged and delivers a constant DC voltage to the SMPS input.
  • the switch if there is sustained overvoltage beyond threshold, the switch is controlled by the charge controller so as to maintain a predefined charge in the output capacitor enough to sustain the SMPS output load.
  • the charge controller is triggered by the over voltage detector.
  • the surge suppression device such as a MOV which is rated well above the threshold voltage of overvoltage detection stage, conducts to create an additional current path so that a fault current is generated which can blow a FUSE connected via an external circuit. In normal operating voltage range the surge suppression device does not conduct.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

Un système de distribution d'énergie d'un distributeur de carburant comprend une alimentation électrique en mode de commutation configurée pour recevoir une puissance en courant alternatif provenant d'une source d'alimentation et produire une puissance en courant continu pour un ou plusieurs composants à courant continu associés au distributeur de carburant. Le système de distribution d'énergie d'un distributeur de carburant comprend également un agencement de protection de l'alimentation électrique configuré pour limiter la tension située au-delà d'un seuil de tension prédéterminé d'atteindre l'alimentation électrique en mode de commutation.
PCT/IN2017/050622 2017-01-02 2017-12-28 Distributeur de carburant doté d'un agencement de protection de l'alimentation électrique WO2018122873A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201721000092 2017-01-02
IN201721000092 2017-01-02

Publications (1)

Publication Number Publication Date
WO2018122873A1 true WO2018122873A1 (fr) 2018-07-05

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5784231A (en) * 1997-04-25 1998-07-21 Philips Electronics North America Corp. Overvoltage protection for SMPS based on demagnetization signal
US20030025397A1 (en) * 2001-02-13 2003-02-06 Young Douglas Gibbons System for providing assured power to a critical load
US7259481B2 (en) * 2003-02-28 2007-08-21 Kohler Co. Automatic transfer switch capable of receiving input power having voltage within a wide range
RU130313U1 (ru) * 2012-11-23 2013-07-20 Юрий Владимирович Сулимин Станция защиты от коррозии импульсным током
RU2604763C1 (ru) * 2015-09-24 2016-12-10 Николай Титович Краснов Способ компоновки и монтажа винтовым заглублением вертикальных блоков моноблочной/мультиблочной автозаправочной станции

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5784231A (en) * 1997-04-25 1998-07-21 Philips Electronics North America Corp. Overvoltage protection for SMPS based on demagnetization signal
US20030025397A1 (en) * 2001-02-13 2003-02-06 Young Douglas Gibbons System for providing assured power to a critical load
US7259481B2 (en) * 2003-02-28 2007-08-21 Kohler Co. Automatic transfer switch capable of receiving input power having voltage within a wide range
RU130313U1 (ru) * 2012-11-23 2013-07-20 Юрий Владимирович Сулимин Станция защиты от коррозии импульсным током
RU2604763C1 (ru) * 2015-09-24 2016-12-10 Николай Титович Краснов Способ компоновки и монтажа винтовым заглублением вертикальных блоков моноблочной/мультиблочной автозаправочной станции

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