EP3747829B1 - Risque d'explosion additive - Google Patents

Risque d'explosion additive Download PDF

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Publication number
EP3747829B1
EP3747829B1 EP20171775.8A EP20171775A EP3747829B1 EP 3747829 B1 EP3747829 B1 EP 3747829B1 EP 20171775 A EP20171775 A EP 20171775A EP 3747829 B1 EP3747829 B1 EP 3747829B1
Authority
EP
European Patent Office
Prior art keywords
fuel
additive
conduit
dispensing unit
pump
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.)
Active
Application number
EP20171775.8A
Other languages
German (de)
English (en)
Other versions
EP3747829A1 (fr
Inventor
Bengt I Larsson
Mattias Mårtensson
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.)
Wayne Fueling Systems Sweden AB
Original Assignee
Wayne Fueling Systems Sweden AB
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 Wayne Fueling Systems Sweden AB filed Critical Wayne Fueling Systems Sweden AB
Publication of EP3747829A1 publication Critical patent/EP3747829A1/fr
Application granted granted Critical
Publication of EP3747829B1 publication Critical patent/EP3747829B1/fr
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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
    • B67D7/74—Devices for mixing two or more different liquids to be transferred
    • 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
    • B67D7/02—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 liquids other than fuel or lubricants
    • B67D7/0277—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 liquids other than fuel or lubricants using negative pressure
    • 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
    • B67D7/74—Devices for mixing two or more different liquids to be transferred
    • B67D2007/745—Devices for mixing two or more different liquids to be transferred for obtaining fuel of a given octane level
    • B67D2007/748—Devices for mixing two or more different liquids to be transferred for obtaining fuel of a given octane level by mixing fuel with additives, e.g. anti-knocking agents
    • 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
    • B67D7/78—Arrangements of storage tanks, reservoirs or pipe-lines

Definitions

  • the invention relates to a fuel dispensing unit for refueling vehicles and to a method for handling a fuel dispensing unit.
  • electromechanical devices such as the motor or the above mentioned switching device, must be enclosed in explosion-proof housings or isolated through the use of intrinsically safe circuitry in order to protect against the hazards of a spark igniting fuel vapors.
  • the additive constitutes a highly inflammable substance and is normally held in a container which is placed in connection to the fuel dispensing unit and is connected thereto.
  • the additive is pumped into the fuel at a pressure side of a fuel pump inside the fuel dispensing unit.
  • the additive itself is pumped by means of a pump driven by a motor.
  • a fuel dispensing unit according to the preamble of independent claim 1 is known from WO 2015/009215 A1 .
  • a fuel dispensing unit for refueling vehicles.
  • the fuel dispensing unit comprises an underground tank for holding fuel, a fuel conduit for transporting the fuel, the fuel conduit extending between the underground tank and a hose connection, a pump arranged on the fuel conduit, the pump having a suction side and a pressure side, an additive tank for holding additive, and an additive conduit for transporting the additive.
  • the additive conduit extends between the additive tank and the fuel conduit.
  • the fuel dispensing unit is characterized in that the additive conduit is connected to the fuel conduit on the suction side of the pump.
  • the additive Since the additive enters the fuel conduit at the suction side of the pump, it is no longer pressurized in concentrated form. In other words, the additive is mixed into the fuel present in the fuel conduit before being pressurized by means of the pump.
  • Another advantage is that the need for an additional pump and motor for pumping the additive in the fuel dispensing unit is removed.
  • the fuel dispensing unit may further comprise a flow meter and a control valve arranged in series in the additive conduit.
  • the fuel dispensing unit may further comprise a control unit connected to the flow meter and a control valve.
  • the control unit may be adapted to control the control valve based on the volume of fuel present in a fuel flow path of the fuel dispensing unit when a refuelling process is initiated to compensate for lack of additive in that volume of fuel.
  • the volume of fuel present between the nozzle of the fuel dispensing unit and the additive injection point of the system, i.e. where the additive conduit connects with the fuel conduit, is known.
  • the control valve in the additive conduit is set to distribute a higher level of additive for the first 5 litres of fuel to compensate for the lack of additive in the fuel present in the system when the refuelling process is initiated. If the preceding refuelling process in the system included additive, no such compensation will be necessary.
  • the fuel dispensing unit may further comprise a flow meter arranged in the fuel conduit at the suction side of the pump, wherein the control unit is connected to the flow meter arranged in the fuel conduit.
  • the control unit may be adapted to control the control valve based on information from the flow meter arranged in the additive conduit and from the flow meter arranged in the fuel conduit.
  • the fuel dispensing unit may further comprise bypass channel extending between the pressure side and the suction side of the pump on the fuel conduit, the bypass channel comprising a control valve.
  • the pump and the flow meter arranged in the fuel conduit may be arranged in a hydraulics compartment of the fuel dispensing unit.
  • the additive tank, and the flow meter and the control valve arranged in the additive conduit, may be arranged in an additive compartment.
  • the additive compartment may be arranged in an opposite side to the hydraulics compartment of the fuel dispensing.
  • the fuel dispensing unit may further comprise a nozzle connected to the hose connection via a hose.
  • the fuel dispensing unit comprises an underground tank for holding fuel, a fuel conduit for transporting fuel, the fuel conduit extending between the underground tank and a hose connection, a pump arranged on the fuel conduit, the pump having a suction side and a pressure side, an additive tank for holding additive, an additive conduit for transporting additive.
  • the additive conduit extending between the additive tank and the fuel conduit.
  • the method is characterized by the step of connecting the additive conduit to the fuel conduit at the suction side (S) of the pump.
  • the method may further comprise the step of controlling the control valve arranged in the additive conduit based on the volume of fuel present in the fuel flow path of the fuel dispensing unit when a refuelling process is initiated to compensate for lack of additive in that volume of fuel.
  • the method may further comprise the step of controlling a control valve arranged in the additive conduit based on information from a flow meter arranged in the additive conduit and information from a flow meter arranged in the fuel conduit.
  • hose connection is the part, portion or section connecting the fuel conduit with the hose in the fuel dispensing unit. It may for example be constituted by a normal connection means, or by a part or portion of a conduit.
  • Fig. 1 illustrates an exemplary embodiment of a fuel dispensing unit 1 for refueling vehicles.
  • the fuel dispensing unit 1 has hose storage spaces 2 on each opposing side of the fuel dispensing unit 1, an electrical compartment 3 containing all the electronics for the fuel dispensing unit 1, a hydraulic compartment 4 containing fuel dispensing means (not shown), e.g. fuel metering means, valves, vapour recovery system etc., and a column 5 extending vertically between and separating the electrical compartment 3 and the hydraulic compartment 4 from the hose storage spaces 2.
  • the fuel dispensing unit 1 also has an additive compartment 6 which is arranged on an opposite side of the fuel dispensing unit 1 in relation to the hydraulics compartment 4.
  • the fuel When filling up the tank of a motor vehicle, the fuel is pumped from an underground tank 7 by means of a pump 8 which is located in the hydraulic compartment 4, and from there to the column 5 and out to a nozzle 9 via a hose connected 10 to the hose connection 11.
  • the fuel dispensing unit 1 has a nozzle boot 12 in which the nozzle 9 is arranged when not in use.
  • the nozzle boot 12 preferably comprises a sensor (not shown) for detecting if the nozzle 9 is present in the nozzle boot 12. Further, the nozzle 9 is normally equipped with a flow meter (not shown) for measuring the fuel flow rate from the nozzle 9 upon refuelling.
  • Fig. 2 illustrates the fuel dispensing unit 1 from a see through perspective.
  • the fuel dispensing unit 1 comprises the underground tank 7 for holding fuel and a fuel conduit 13 for transporting the fuel.
  • the fuel conduit 13 extends between the underground tank 7 and the hose connection 11.
  • the fuel dispensing unit 1 further comprises the pump 8 arranged on the fuel conduit 13, the pump having a suction side S and a pressure side P, an additive tank 14 for holding additive, and an additive conduit 15 for transporting the additive.
  • the additive conduit 15 extends between the additive tank 14 and the fuel conduit 13 and is connected the fuel conduit 13 at the suction side S of the pump 8.
  • a flow meter 16 and a control valve 17 are arranged in series in the additive conduit 15.
  • the fuel dispensing unit 1 also comprises a control unit 18 which is connected to the flow meter 16 and the control valve 17.
  • the control unit 18 is used to control the flow of additive through the additive conduit 15 by means of the control valve 17.
  • the control unit 18 may for example be adapted to control the control valve 17 based on the volume of fuel present in a fuel flow path of the fuel dispensing unit 1 when a refuelling process is initiated to compensate for lack of additive in that volume of fuel.
  • the control valve 17 in the additive conduit 15 may be set to distribute a higher level of additive for a predetermined number litres of fuel to compensate for the lack of additive in the fuel present in the system when the refuelling process is initiated. If the preceding refuelling process in the system included additive, no such compensation is necessary.
  • the predetermined number of litre is established based on the volume of fuel present in the system when the refuelling process is initiated.
  • a flow meter 19 is arranged in the fuel conduit at the suction side S of the pump 8.
  • the control unit 18 is connected to the flow meter 19 arranged in the fuel conduit 13.
  • the control unit 18 may be adapted to control the control valve 17 based on information from the flow meter 16 arranged in the additive conduit and from the flow meter 13 arranged in the fuel conduit.
  • the control valve 17 in the additive conduit 15 may be set to distribute a level of additive which is based on the fuel flow rate detected by the flow meter in the fuel conduit 13.
  • control unit 18 may be adapted to combine the different solutions described above in order to give the best possible accuracy of the ratio blending.
  • the control unit 18 may be adapted to control the control valve 17 based on information from both the flow meter 16 and the flow meter 19, as well as, simultaneously compensating for the potential for the lack of additive in the fuel volume present in the system when the refuelling process is initiated.
  • the fuel dispensing unit 1 may also further comprise a bypass channel 20 extending between the pressure side P and the suction side S of the pump 8 on the fuel conduit 13, wherein the bypass channel 20 comprises a control valve 21.
  • the control valve 21 in the bypass channel 20 is closed or open at a small opening degree.
  • a backpressure develops and causes the control valve 21 to open. Thereby, a portion of the pumped fuel is recirculated to the inlet of the pump 8.
  • the pump 8 and the flow meter 13 arranged in the fuel conduit are arranged in a hydraulics compartment 4 of the fuel dispensing unit 1, while the additive tank 14, and the flow meter 16 and the control valve 17 arranged in the additive conduit 15, are arranged in an additive compartment 6.
  • the additive compartment 6 is in this embodiment arranged at an opposite side to the hydraulics compartment 4 of the fuel dispensing unit 1.
  • control valve 17 may be constituted by an on-off valve, a proportional valve, or another device for adjusting the additive flow rate in the additive conduit 15.
  • the pump 8 may be connected to a pump motor which drives the same but it may also include a pump motor in itself.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)

Claims (13)

  1. Unité de distribution de carburant (1) pour ravitailler en carburant des véhicules, comprenant:
    un réservoir souterrain (7) pour contenir du carburant,
    un conduit de carburant (13) pour transporter le carburant, le conduit de carburant (13) s'étendant entre le réservoir souterrain (7) et un de raccordement de flexible (11),
    une pompe (8) disposée sur le conduit de carburant (13), la pompe (8) ayant un côté d'aspiration (S) et un côté de refoulement (P),
    un réservoir d'additif (14) pour contenir l'additif, et
    un conduit d'additif (15) pour transporter l'additif, le conduit d'additif (15) s'étendant entre le réservoir d'additif (14) et le conduit de carburant (13),
    caractérisé en ce que le conduit d'additif (15) est raccordé au conduit de carburant (13) du côté d'aspiration (S) de la pompe (8).
  2. Unité de distribution de carburant (1) selon la revendication 1, comprenant en outre un débitmètre (16) et une vanne de commande (17) disposés en série dans le conduit d'additif (15).
  3. Unité de distribution de carburant (1) selon la revendication 2, comprenant en outre une unité de commande (18) reliée au débitmètre (16) et une vanne de commande (17) dans le conduit d'additif (15).
  4. Unité de distribution de carburant (1) selon la revendication 3, dans laquelle l'unité de commande (18) est adaptée pour commander la vanne de commande (17) sur la base du volume de carburant présent dans un trajet d'écoulement de carburant de l'unité de distribution de carburant (1) lorsqu'un processus de ravitaillement est lancé pour compenser le manque d'additif dans ce volume de carburant.
  5. Unité de distribution de carburant (1) selon une quelconque des revendications précédentes, comprenant en outre un débitmètre (19) disposé dans le conduit de carburant (13) du côté d'aspiration (S) de la pompe (8), dans lequel l'unité de commande (18) est reliée au débitmètre (19) disposé dans le conduit de carburant (13).
  6. Unité de distribution de carburant (1) selon la revendication 5, dans laquelle l'unité de commande (18) est adaptée pour commander la vanne de commande (17) en fonction des informations du débitmètre (16) disposé dans le conduit d'additif (15) et du débitmètre (19) disposé dans le conduit de carburant (13).
  7. Unité de distribution de carburant (1) selon une quelconque des revendications précédentes, comprenant en outre un canal de dérivation (20) s'étendant entre le côté de refoulement (P) et le côté d'aspiration (S) de la pompe (8) sur le conduit de carburant (13), le canal de dérivation (20) comportant une vanne de commande (21).
  8. Unité de distribution de carburant (1) selon une quelconque des revendications précédentes, dans laquelle la pompe (8) et le débitmètre (19) disposés dans le conduit de carburant (13) sont disposés dans un compartiment hydraulique (4) de l'unité de distribution de carburant (1).
  9. Unité de distribution de carburant (1) selon la revendication 9, dans laquelle le réservoir d'additif (14), et le débitmètre (16) et la vanne de commande (17) disposés dans le conduit d'additif (15), sont disposés dans un compartiment d'additif (6), le compartiment d'additif (6) étant disposé d'un côté opposé au compartiment hydraulique (6) de l'unité de distribution de carburant (1).
  10. Unité de distribution de carburant (1) selon une quelconque des revendications précédentes, comprenant en outre une buse (9) reliée au tuyau de raccordement (11) par l'intermédiaire d'un tuyau (10).
  11. Procédé de manipulation d'une unité de distribution de carburant (1), l'unité de distribution de carburant (1) comprenant:
    un réservoir souterrain (7) pour contenir du carburant,
    un conduit de carburant (13) pour transporter du carburant, le conduit de carburant (13) s'étendant entre le réservoir souterrain (7) et un raccordement de flexible (11),
    une pompe (8) disposée sur le conduit de carburant (13), la pompe (8) ayant un côté d'aspiration (S) et un côté de refoulement (P),
    un réservoir d'additif (14) pour contenir l'additif,
    un conduit d'additif (15) pour transporter l'additif, le conduit d'additif (15) s'étendant entre le réservoir d'additif (14) et le conduit de carburant (13), caractérisé par l'étape de:
    raccordement du conduit d'additif (15) au conduit de carburant (13) au niveau du côté d'aspiration (S) de la pompe (8).
  12. Procédé selon la revendication 11 comprenant en outre les étapes de:
    contrôle si le processus de ravitaillement en carburant précédent comprenait du carburant contenant un additif,
    si non, commande de la vanne de commande (17) disposée dans le conduit d'additif (15) sur la base du volume de carburant présent dans un trajet d'écoulement de carburant de l'unité de distribution de carburant (1) lorsqu'un nouveau processus de ravitaillement en carburant est lancé pour compenser le manque d'additif dans ce volume de carburant.
  13. Procédé selon la revendication 11 ou 12, comprenant en outre l'étape de commande d'une vanne de commande (17) disposée dans le conduit d'additif (15) en fonction des informations d'un débitmètre (16) disposé dans le conduit d'additif (15) et les informations d'un débitmètre (19) disposé dans le conduit de carburant (13).
EP20171775.8A 2019-06-05 2020-04-28 Risque d'explosion additive Active EP3747829B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1950672A SE543664C2 (en) 2019-06-05 2019-06-05 A fuel dispensing unit and a method for handling additives inside a fuel dispensing unit

Publications (2)

Publication Number Publication Date
EP3747829A1 EP3747829A1 (fr) 2020-12-09
EP3747829B1 true EP3747829B1 (fr) 2021-10-13

Family

ID=70475997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20171775.8A Active EP3747829B1 (fr) 2019-06-05 2020-04-28 Risque d'explosion additive

Country Status (3)

Country Link
EP (1) EP3747829B1 (fr)
PT (1) PT3747829T (fr)
SE (1) SE543664C2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE545426C2 (en) * 2021-09-16 2023-09-05 Dover Fueling Solutions Uk Ltd A pumping system with an equalizer tube

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055554A (en) * 1958-06-09 1962-09-25 Donald F Wight Means for measuring and mixing lubricating oil with gasoline
US3316844A (en) * 1965-05-18 1967-05-02 Michael J Valk Additive delivery device
US4131215A (en) * 1977-07-05 1978-12-26 Sun Oil Company Of Pennsylvania Dispenser with additive option
US4790454A (en) * 1987-07-17 1988-12-13 S. C. Johnson & Son, Inc. Self-contained apparatus for admixing a plurality of liquids
US5251785A (en) * 1992-02-06 1993-10-12 The Lubrizol Corporation Additive injection system and method
US8234870B2 (en) * 2009-04-17 2012-08-07 Hamilton Sundstrand Corporation Additive injection system for improving thermal stability of jet fuel
US9440843B2 (en) * 2013-07-03 2016-09-13 Kurt A. Polzin Mobile platform for dispensing fuel from any tank
SE1350881A1 (sv) * 2013-07-15 2015-01-16 Wayne Fueling Systems Sweden Ab System och förfarande för säker hantering av ett bränsletillsatsmedel
CN104512857A (zh) * 2013-09-29 2015-04-15 德莱赛稳加油设备(上海)有限公司 一种用于燃油加注机的添加剂注射装置及方法
FR3042787A1 (fr) * 2015-10-23 2017-04-28 Tokheim Holding Bv Distributeur de carburant dont le compartiment hydraulique est equipe d'un dispositif d'injection d'additif

Also Published As

Publication number Publication date
SE543664C2 (en) 2021-05-25
EP3747829A1 (fr) 2020-12-09
PT3747829T (pt) 2022-01-06
SE1950672A1 (en) 2020-12-06

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