EP0353009A1 - Unité de contrôle pour le chargement et le déchargement de citernes de transport de fluides - Google Patents

Unité de contrôle pour le chargement et le déchargement de citernes de transport de fluides Download PDF

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Publication number
EP0353009A1
EP0353009A1 EP89307514A EP89307514A EP0353009A1 EP 0353009 A1 EP0353009 A1 EP 0353009A1 EP 89307514 A EP89307514 A EP 89307514A EP 89307514 A EP89307514 A EP 89307514A EP 0353009 A1 EP0353009 A1 EP 0353009A1
Authority
EP
European Patent Office
Prior art keywords
foot valve
fluid transport
transport container
container
valve
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
EP89307514A
Other languages
German (de)
English (en)
Other versions
EP0353009B1 (fr
Inventor
Simon H.A. James
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.)
Emco Wheaton UK Ltd
Original Assignee
Emco Wheaton UK 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 Emco Wheaton UK Ltd filed Critical Emco Wheaton UK Ltd
Publication of EP0353009A1 publication Critical patent/EP0353009A1/fr
Application granted granted Critical
Publication of EP0353009B1 publication Critical patent/EP0353009B1/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
    • B67D7/04—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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/54—Gates or closures
    • B65D90/66—Operating devices therefor
    • 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
    • B67D7/36—Arrangements of flow- or pressure-control valves

Definitions

  • This invention relates to fluid transport containers, such as containers forming part of or carried by road and rail tankers, and to control means therefor.
  • Fluid containers of e.g. road tankers are often provided with a so-called foot valve located in a lower region of the container through which fluid may be discharged from the container during unloading and by means of which a container may be filled with fluid by bottom loading under pressure.
  • the foot valve is connected by a flexible conduit to, say, either a supply of fluid or a storage tank respectively.
  • the invention provides a fluid transport container comprising a foot valve arranged in a lower part of the container through which the container may be loaded and unloaded, and control means for rapidly closing said foot valve, the arrangement being such that the foot valve is closed more rapidly in a discharge mode than in a load mode.
  • control means is responsive to a control signal indicative of whether the container is in a discharge or load mode and is operable automatically to adjust the speed of closing of the foot valve accordingly.
  • the foot valve is opened in response to an actuating signal received from said control means, and means are provided for changing the speed of removal of said signal to close the valve at different rates in drop and load modes.
  • the changing means has two states corresponding to discharge and load modes and is switched automatically between these states.
  • the foot valve be actuated by a pneumatic signal, although electrical or hydraulic signals may also be employed.
  • the speed changing means may comprise a pilot valve adapted to exhaust the pressure at the foot valve at different rates.
  • the pressure may be exhausted through a relatively wide orifice or directly to atmosphere in the discharge mode, and through a more restricted orifice in the load mode.
  • the restricted orifice may be variable to enable adjustment of the closure speed in the discharge mode.
  • control means may be employed to ensure that an overspill protection system is operational during loading of the container through the foot valve.
  • the present invention provides a fluid transport container comprising a foot valve arranged in a lower part of the container through which the container may be loaded and unloaded, control means for actuating said foot valve in load and discharge modes, and an overspill protection system adapted to interrupt loading should the level in the container exceed a predetermined maximum, wherein an electrical interface is provided whereby said overspill protection system is automatically enabled whenever the foot valve is open in the load mode.
  • the interface comprises a pressure switch responsive to signals received from the control means and the foot valve.
  • the drawing shows the bottom of a container 1 with a foot valve 2.
  • the container In a road tanker, the container would in fact be divided into a plurality of longitu­dinally spaced compartments each with its own foot valve.
  • the foot valve is shown connected to a flexible conduit 3 at the other end of which is an adaptor 4.
  • the conduit may be fitted to a bottom loading arm for loading of fluid into the container, or alternatively to a delivery hose for discharge of fluid, e.g. petrol, from the container.
  • the opening of the foot valve is controlled by control means which will now be described in detail.
  • the foot valve is pneumatically operable and is opened in response to a pneumatic signal generated by a control unit 5 and applied via a control line 6.
  • a shuttle valve 7 is provided in the control line and is connected to the foot valve by a pilot line .
  • the shuttle valve 7 enables a rapid exhaust of the pressure at the foot valve and thus rapid closing of the foot valve.
  • the pilot line 8 the shuttle valve 7 is switched to vent the pressure at the foot valve 2 via a pilot operated valve 9.
  • the pilot valve 9 has two positions. In a first position, shown in the drawing, the foot valve is connected directly to atmosphere. In the second position the foot valve is connected to atmosphere through a variable restricted orifice 10. Thus when the pilot valve is in the second position the pressure at the foot valve is released more slowly and the foot valve closes relatively slowly compared to when the pilot valve 9 is in its first position.
  • the pilot valve is switched from its first to second position in response to a signal, indicative of the load mode, applied by the control unit 5 via line 11.
  • a signal is generated by the control unit 5 and applied to the pilot valve 9 to switch the valve to its second position.
  • fluid in a discharge mode is unloaded at a rate of about 1000 litres/­min. and the foot valve is closed in under 2 secs.
  • the load rate is about 2400 litres/min. and the foot valve is closed in about 10 secs.
  • a further line 12 leads away from the foot valve 2 for transmitting a signal indicative of the foot valve condition. In particular when the foot valve is open a signal is returned to the control unit 5.
  • a branch of line 12 also leads to a pneumatic "and gate" 13.
  • the other input of the and gate 13 is a branch of line 11.
  • the output of the and gate is connected to a pressure switch 14 for activating an overspill protection system.
  • the rate of air exhaustion from the foot valve may be controlled.
  • the actual speed of closure for any restrictor setting will be dependant upon the rate of product flow and thus the system becomes self-compensating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Refuse Collection And Transfer (AREA)
  • Safety Valves (AREA)
EP89307514A 1988-07-22 1989-07-24 Unité de contrôle pour le chargement et le déchargement de citernes de transport de fluides Expired - Lifetime EP0353009B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8817487 1988-07-22
GB888817487A GB8817487D0 (en) 1988-07-22 1988-07-22 Fluid transport containers & control means therefor

Publications (2)

Publication Number Publication Date
EP0353009A1 true EP0353009A1 (fr) 1990-01-31
EP0353009B1 EP0353009B1 (fr) 1994-06-01

Family

ID=10640932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89307514A Expired - Lifetime EP0353009B1 (fr) 1988-07-22 1989-07-24 Unité de contrôle pour le chargement et le déchargement de citernes de transport de fluides

Country Status (4)

Country Link
EP (1) EP0353009B1 (fr)
DE (1) DE68915633T2 (fr)
ES (1) ES2057131T3 (fr)
GB (1) GB8817487D0 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2661232A1 (fr) * 1990-04-23 1991-10-25 Sepame Sa Systeme de securite de commande de vanne et de clapet a manóoeuvre sequentielle preferentielle pour bas de citerne.
US5566007A (en) * 1993-09-06 1996-10-15 Kabushiki Kaisha Toshiba Reflection type liquid crystal display device capable of color display

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731029A (en) * 1951-05-04 1956-01-17 Bowser Inc Bottom fill apparatus
FR1327848A (fr) * 1962-04-10 1963-05-24 Soupape d'urgence de chargement d'un réservoir par le fond
FR1572924A (fr) * 1967-07-24 1969-06-27
FR2562054A1 (fr) * 1984-03-27 1985-10-04 Perolo Sa Procede de mise en oeuvre sequentielle automatique d'un event a commande pneumatique et ensemble permettant la mise en oeuvre de ce procede

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2600977A (en) * 1948-10-13 1952-06-17 Frees Joseph H De Emergency valve system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731029A (en) * 1951-05-04 1956-01-17 Bowser Inc Bottom fill apparatus
FR1327848A (fr) * 1962-04-10 1963-05-24 Soupape d'urgence de chargement d'un réservoir par le fond
FR1572924A (fr) * 1967-07-24 1969-06-27
FR2562054A1 (fr) * 1984-03-27 1985-10-04 Perolo Sa Procede de mise en oeuvre sequentielle automatique d'un event a commande pneumatique et ensemble permettant la mise en oeuvre de ce procede

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2661232A1 (fr) * 1990-04-23 1991-10-25 Sepame Sa Systeme de securite de commande de vanne et de clapet a manóoeuvre sequentielle preferentielle pour bas de citerne.
US5566007A (en) * 1993-09-06 1996-10-15 Kabushiki Kaisha Toshiba Reflection type liquid crystal display device capable of color display

Also Published As

Publication number Publication date
GB8817487D0 (en) 1988-08-24
EP0353009B1 (fr) 1994-06-01
ES2057131T3 (es) 1994-10-16
DE68915633T2 (de) 1995-01-12
DE68915633D1 (de) 1994-07-07

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