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WO2007012365A1 - Dispositif servant a limiter le remplissage d’un reservoir par un fluide - Google Patents

Dispositif servant a limiter le remplissage d’un reservoir par un fluide Download PDF

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Publication number
WO2007012365A1
WO2007012365A1 PCT/EP2006/006006 EP2006006006W WO2007012365A1 WO 2007012365 A1 WO2007012365 A1 WO 2007012365A1 EP 2006006006 W EP2006006006 W EP 2006006006W WO 2007012365 A1 WO2007012365 A1 WO 2007012365A1
Authority
WO
WIPO (PCT)
Prior art keywords
filling
tank
limiting
fluid according
blocking valve
Prior art date
Application number
PCT/EP2006/006006
Other languages
English (en)
Inventor
Achille Tomasetto
Original Assignee
Tomasetto Achille S.P.A.
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 Tomasetto Achille S.P.A. filed Critical Tomasetto Achille S.P.A.
Publication of WO2007012365A1 publication Critical patent/WO2007012365A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/03006—Gas tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
    • F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
    • F16K31/24—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with a transmission with parts linked together from a single float to a single valve
    • F16K31/26—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with a transmission with parts linked together from a single float to a single valve with the valve guided for rectilinear movement and the float attached to a pivoted arm
    • F16K31/265—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with a transmission with parts linked together from a single float to a single valve with the valve guided for rectilinear movement and the float attached to a pivoted arm with a second lever or toggle between the pivoted arm and the valve

Definitions

  • the present invention relates to a device for limiting the filling of a tank with fluid, particularly suitable to limit filling to no more than 80% of the capacity of tanks installed on motor vehicles that run on liquefied petroleum gas.
  • the fuel is stored in one or more tanks manufactured in accordance with regulations such as ECE ONU 67-R01 , the European directive that regulates the subject.
  • a multipurpose valve is applied to the tanks and allows to fill the tank, supplies the engine, indicates the level of fuel present in the tank, and also performs certain safety functions.
  • such multipurpose valve limits the internal pressure of the tank to 27 bars, optionally opens external venting ports in case of fire, and limits filling to no more than 80% of the total capacity of the tank, according to the constraints set by currently applicable standards.
  • the filling limiting device used by most manufacturers generally bases its operation on the difference in pressure between the inside of the tank and the pump of the filling station and is generally constituted mainly by a valve which can slide within a chamber provided with an inlet, which can be connected to the nozzle of the filling station, and an outlet, which is connected directly to the inside of the tank.
  • valve which in the normal inactive condition closes the inlet by virtue of the constant and continuous thrust of a spring, is connected to a stem by which it interacts with a rod-and-floater device, which is able to block its sliding during filling, keeping both openings free and accordingly allowing the inflow of gas into the tank.
  • the rod-and-floater device frees the stroke of the stem and consequently of the valve, which under the pressure of the gas that arrives from the nozzle blocks the outlet, overcoming the constant contrast thrust applied by the spring. At this point, filling is stopped, interrupting the action of the nozzle, and the spring returns the valve to the inactive condition described earlier.
  • the above system has a severe drawback, which becomes evident as the filling limit threshold is reached, i.e., when the flow-rate of the nozzle is reduced, consequently decreasing the difference in pressure between the inside of the tank and the pump of the filling station.
  • the aim of the invention is to solve the problems described above, by providing a device for limiting the filling of a tank with a fluid which can operate even with extremely low flow-rates.
  • a particular object of the invention is to provide a device for limiting the filling of a tank with fluid which in particular operates even with flow- rates of less than 2 liters per minute.
  • Another object of the invention is to provide a device for limiting the filling of a tank with fluid which is simple to manufacture and can be produced at competitive costs.
  • a device for limiting the filling of a tank with fluid comprising a substantially hollow main body, which forms a chamber provided with at least one inlet and at least one outlet, said chamber slidingly accommodating a flow blocking valve inside it, said flow bloking valve being kept in an inactive condition by an elastic means, in which said blocking valve prevents the flow of said fluid through said inlet, said blocking valve being rigidly coupled to a guiding stem, which interacts with a floater-type actuation means, which is adapted to produce the transition from a filling condition, in which said inlet and said outlet are both open, to a closed condition, in which said blocking valve prevents the flow of said fluid through said outlet, characterized in that it comprises a movable abutment means adapted to interrupt the action of said elastic means on said blocking valve during said filling condition.
  • Figure 1 is a side view of a multipurpose valve device
  • Figure 2 is a partially sectional view of the multipurpose valve device of Figure 1 ;
  • Figure 3 is a partially sectional side view of a device for limiting the filling of a tank with fluid according to the invention
  • Figure 4 is a partially sectional front view of a device for limiting the filling of a tank with fluid according to the invention, in the inactive condition;
  • Figure 5 is a partially sectional side view of the device for limiting the filling of a tank with fluid according to Figure 4;
  • Figure 6 is a partially sectional front view of a device for limiting the filling of a tank with fluid according to the invention, in the filling condition;
  • Figure 7 is a partially sectional side view of the device for limiting the filling of a tank with fluid of Figure 6;
  • Figure 8 is a partially sectional front view of a device for limiting the filling of a tank with fluid according to the invention, in the closed condition;
  • Figure 9 is a partially sectional side view of the device for limiting the filling of a tank with fluid of Figure 8;
  • Figure 10 like Figure 3, is a partially sectional side view of a further embodiment of a device for limiting the filling of a tank with fluid according to the invention;
  • Figure 1 1 is a partially sectional front view of the embodiment of Figure 10, shown in the inactive condition;
  • Figure 12 is a partially sectional side view of the device for limiting the filling of a tank with fluid of Figure 1 1 ;
  • Figure 13 is a partially sectional front view of the embodiment of Figure 10, shown in the filling condition;
  • Figure 14 is a partially sectional side view of the device for limiting the filling of a tank with fluid of Figure 13;
  • Figure 15 is a partially sectional front view of the embodiment of Figure 10, shown in the closed condition;
  • Figure 16 is a partially sectional side view of the device for limiting the filling of a tank with fluid of Figure 15;
  • Figure 17 is a perspective view of a detail of the embodiment of the preceding figures.
  • a limiter device for limiting the filling of a tank with fluid is commonly fitted to multipurpose valve devices 100, which are generally applied to the tanks of cars fueled by liquefied petroleum gas.
  • the limiter device 1 has a main body, which is substantially hollow and is constituted by two portions 2 and 3, which are joined together detachably and form a chamber 4, which is substantially cylindrical and is provided with an inlet 5, which is connected to an inlet duct 6, and with an outlet 7, which is connected directly to the inside of the tank, which is not shown in the accompanying figures.
  • the chamber 4 slidingly accommodates a blocking valve 8, which is rigidly coupled to a guiding stem 9, which can slide axially and is guided by a through hole 10 formed in the portion 3 of the main body.
  • the blocking valve 8 has a transverse cross-section which has a polygonal profile or is in any case such as to leave a gap with respect to the walls of the chamber 4, in order to allow the passage of the gas during the filling condition, in which the inlet 5 and the outlet 7 are both free, as shown in the accompanying Figures 6 and 7.
  • An elastic means preferably constituted by a helical spring 12 which is associated coaxially with the guiding stem 9, keeps the blocking valve 8 in an inactive condition, shown in Figures 4 and 5, in which the blocking valve 8 prevents the flow of gas through the inlet 5, also by means of a gasket 1 1.
  • the path of the guiding stem 9 affects a milled pivot 13, which is associated rotatably with the portion 3 of the main body so that the longitudinal axis of the former and the rotation axis of the latter are substantially perpendicular.
  • the milled pivot 13 is provided with a contoured portion 14, which under the action of a floater-type actuation means produces the transition from the filling condition, described earlier, to a closed condition, in which the blocking valve 8 prevents the flow of gas through the outlet 7, as shown in Figures 8 and 9.
  • a floater 16 is connected to the end of a rod 15, which is rigidly coupled, at its opposite end, to the milled pivot 13, which converts the ascending and descending motion of the floater 16 into a rotary motion, conditioning the position of the contoured portion 14, which can limit the axial sliding of the guiding stem 9 in the through hole 10 or allow it completely, respectively in the filling and closure conditions.
  • a movable abutment means 17 is provided in the limiter device 1 for limiting the filling of a tank with fluid and allows to interrupt the action of the elastic means on the blocking valve 8 during the filling condition.
  • the movable abutment means 17 comprises a spring guiding slider 18, which is guided slidingly by the guiding stem 9, on which it is fitted coaxially by a through cavity
  • the profile of the transverse cross-section of the cavity 19 is substantially complementary to the profile of the transverse cross-section of the guiding stem 9.
  • a receptacle 24 is formed on the spring guiding slider 18 and partially accommodates the helical spring 12, which abuts, at the opposite end, against a seat 20, which is formed in the portion 3 of the main body at the through hole 10.
  • the spring guiding slider 18 has a pressure surface 21 , which is substantially flat and is formed at right angles to its longitudinal axis, on the opposite end with respect to the end of the receptacle 24, so as to offer the largest possible pressure surface to the gas during filling.
  • a calibrated bush 22 is associated with the portion 3 of the main body, coaxially to the longitudinal axis of the chamber 4, and forms an abutment surface 23, on the end related to the blocking valve 8, allowing the blocking valve to rest thereon and form a seal during the closed condition.
  • the internal profile of the transverse cross-section of the calibrated bush 22 is substantially complementary to the outside profile of the transverse cross-section of the spring guiding slider 18, which can thus slide therein with extremely limited play, so as to almost form a seal, during the inactive and closed conditions.
  • the blocking valve 8 which is rigidly coupled to the guiding stem 9, may also be provided with a circular profile, provided that its transverse cross-section is smaller than the transverse cross- section of the chamber 4.
  • the gap between the circular profile of the blocking valve 8 and the walls of the chamber 4 considerably facilitates the flow of the gas during the filling condition, and allows the optional insertion, during construction, of a pusher means, not shown in the figures, which is constituted by a second spring, which abuts at one end against the wall of the chamber 4 related to the inlet 5 and at the opposite end against the abutment surface 23 of the calibrated bush 22, keeping the bush in the correct position.
  • the blocking valve 8 can be provided with a frustum-shaped portion 25, which is formed on its portion related to the guiding stem 9 and is such as to allow convenient mating with the abutment surface 23.
  • the spring guiding slider 18 may be provided with multiple wings 26a, 26b, 26c and 26d, which are formed on the pressure surface 21 , as clearly shown in Figure 17.
  • the parts that correspond to the parts that have already been described with reference to the embodiment shown in Figures 1 to 9 have been designated by the same reference numerals.
  • the inlet duct 6 is connected to the pump of the filling station and the dispensing of the gas begins, leading to the filling condition.
  • the gas which flows through the gap that exists between the polygonal profile of the blocking valve 8 and the internal walls of the chamber 4, encounters the pressure surface 21, against which it applies a pressure which is sufficient to cause the spring guiding slider 18 to slide, causing the compression of the helical spring 12, which in this manner interrupts its pushing action against the blocking valve 8 during the filling condition.
  • the sliding of the spring guiding slider 18 also allows the gas to flow into the tank through the outlet 7, and as the level of the gas increases, the floater 16 rises, causing a rotation of the milled pivot 13, consequently gradually moving the contoured portion 14.
  • the helical spring 12 returns the blocking valve 8 to the initial inactive condition, by means acting on the spring guiding slider 18.
  • the device for limiting the filling of a tank with fluid shown in Figures 10 to 17 has an operation which is similar to what has been described with reference to Figures 1 to 9, except that during the closed condition the blocking valve 8 prevents the gas from flowing through the outlet 7, resting its frustum-shaped portion 25 against the internal edge of the abutment surface, as shown in Figures 15 and 16.
  • the device for limiting the filling of a tank with fluid according to the invention fully achieves the intended aim and objects, being simple and economic and ensuring its correct operation even with extremely low flow-rates of the nozzle and in particular even with flow-rates of less than 2 liters per minute.
  • the materials used may be any according to requirements and to the state of the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

L’invention concerne un dispositif servant à limiter le remplissage d’un réservoir par un fluide. Le dispositif comporte un corps principal sensiblement creux formant une enceinte pourvue d’une entrée et d’une sortie, l’enceinte recevant une vanne d’arrêt d’écoulement susceptible de coulisser à l’intérieur de celle-ci. La vanne est maintenue dans un état inactif par un moyen élastique, où elle empêche le fluide de s’écouler par l’entrée. La vanne d’arrêt est solidaire d’une tige de guidage, laquelle agit sur un moyen d’actionnement du type flotteur conçu pour assurer la transition entre un état de remplissage dans lequel l’entrée et la sortie sont toutes deux ouvertes, et un état fermé dans lequel la vanne d’arrêt empêche le fluide de s’écouler par la sortie. Le dispositif comporte également un moyen de butée mobile, conçu pour interrompre l’action du moyen élastique sur la vanne d’arrêt pendant l’état de remplissage.
PCT/EP2006/006006 2005-07-26 2006-06-22 Dispositif servant a limiter le remplissage d’un reservoir par un fluide WO2007012365A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVI2005A000210 2005-07-26
ITVI20050210 ITVI20050210A1 (it) 2005-07-26 2005-07-26 Dispositivo di limitazione del riempimento con fluido di un serbatoio

Publications (1)

Publication Number Publication Date
WO2007012365A1 true WO2007012365A1 (fr) 2007-02-01

Family

ID=36928275

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/006006 WO2007012365A1 (fr) 2005-07-26 2006-06-22 Dispositif servant a limiter le remplissage d’un reservoir par un fluide

Country Status (2)

Country Link
IT (1) ITVI20050210A1 (fr)
WO (1) WO2007012365A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2335765A1 (fr) * 1975-12-15 1977-07-15 Grandpierre Bruno Dispositif limiteur de remplissage
US4266582A (en) * 1978-09-28 1981-05-12 Petit & Cie Tank filling limiter
US6318421B1 (en) * 1997-12-16 2001-11-20 Lafon Production Limit control device for filling a liquid storage tank

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2335765A1 (fr) * 1975-12-15 1977-07-15 Grandpierre Bruno Dispositif limiteur de remplissage
US4266582A (en) * 1978-09-28 1981-05-12 Petit & Cie Tank filling limiter
US6318421B1 (en) * 1997-12-16 2001-11-20 Lafon Production Limit control device for filling a liquid storage tank

Also Published As

Publication number Publication date
ITVI20050210A1 (it) 2007-01-27

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