EP0269586A2 - Inneres Schutzsystem für Behälter, insbesondere unterirdische Behälter für Brennstoff und dergleichen - Google Patents

Inneres Schutzsystem für Behälter, insbesondere unterirdische Behälter für Brennstoff und dergleichen Download PDF

Info

Publication number
EP0269586A2
EP0269586A2 EP87830422A EP87830422A EP0269586A2 EP 0269586 A2 EP0269586 A2 EP 0269586A2 EP 87830422 A EP87830422 A EP 87830422A EP 87830422 A EP87830422 A EP 87830422A EP 0269586 A2 EP0269586 A2 EP 0269586A2
Authority
EP
European Patent Office
Prior art keywords
liner
tank
tubular elements
tanks
pressurised
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.)
Withdrawn
Application number
EP87830422A
Other languages
English (en)
French (fr)
Other versions
EP0269586A3 (de
Inventor
Gianfranco Ferazzi
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.)
ECOTHERM SpA
Original Assignee
ECOTHERM SpA
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 ECOTHERM SpA filed Critical ECOTHERM SpA
Publication of EP0269586A2 publication Critical patent/EP0269586A2/de
Publication of EP0269586A3 publication Critical patent/EP0269586A3/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • B65D90/02—Wall construction
    • B65D90/04—Linings
    • B65D90/046—Flexible liners, e.g. loosely positioned in the container
    • B65D90/047—Flexible liners, e.g. loosely positioned in the container comprising rigid bracing, e.g. bulkheads
    • 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
    • B65D9/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of wood or substitutes therefor
    • B65D9/02—Containers of curved cross-section, e.g. cylindrical boxes
    • B65D9/04—Containers of curved cross-section, e.g. cylindrical boxes made up of staves, e.g. barrels for liquids
    • 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
    • B65D2590/00—Component parts, details or accessories for large containers
    • B65D2590/02—Wall construction
    • B65D2590/04—Linings
    • B65D2590/043—Flexible liners
    • B65D2590/046—Bladders

Definitions

  • This invention relates to an internal protection system for tanks, particularly underground tanks for fuel and the like.
  • Tanks of this type are mainly constructed of mild steel plate, their geometry comprising dished ends and a cylindrical shell formed from rolled sheet or a helically welded coiled strip.
  • the outer walls are coated with tar or a special glass fibre and resin coating.
  • the tanks are formed with a double wall, the sealed interspace being below atmospheric pressure and the soundness of the wall being checked by monitoring the vacuum of the air in the interspace.
  • dregs or sediments which form with time during the use of the tank.
  • the dregs consist of impurities of greater density than the fuel, which deposit by gravity. These dregs are often agitated during refilling of the tank, and as they require a certain time for re­deposition they tend to mix with the fuel withdrawn from the tank and fed to the final user. Feeding "dirty" fuel to the final user causes problems in internal combustion engines or in burners of heating installations, and requires operators to use costly means for filtering or handing the fuel (decantation). Moreover, the presence of dregs or sediments in tanks of this type leads to corrosion of the inner tank wall, which can result in fuel leakage, with negative consequences due to the polluting effect of the fuel and the irrecoverable cost of the quantity lost.
  • the present invention provides an internal protection system for tanks, particularly for underground tanks for fuel and the like, comprising the use of a liner of flexible, elastic plastics material unattackable by the liquid material to be contained in the tank.
  • the plastics liner is inserted into the tank through the manhole or possibly through a connection if sufficiently large.
  • the liner adapts to the inner shape of the tank by virtue of the flexibility and elasticity of the material of which it is manufactured, and is kept substantially adhering to the inner walls of the tank by flexible hoop elements which are applied to the interior of the liner after it has been inserted into the tank, or by pressurisable tubes which are preformed in said liner and are pressurised after the liner has been inserted into the tank.
  • the pressurisable tubes are associated with a double wall liner, and the interspace between the two walls can be pressurised with positive or negative pressure relative to atmospheric in order to monitor any loss of seal.
  • the tubes can also be filled with expanded synthetic material.
  • the tank 1 is provided with a cylindrical wall 2, two dished ends 3 and 4, and a manhole 5.
  • the inner liner 6 is inserted into the tank 1 through the manhole 5.
  • the inner liner 6 is constructed of flexible and yieldable elastic material unattackable either by the dregs or sediments, or by the fuel to be contained in the tank.
  • the liner can be constructed for example of plasticised PVC of thickness between 0.5 and 0.7 mm.
  • the plastics liner does not need to be constructed with a shape which perfectly corresponds to the interior of the tank to be protected, as the characteristics of the chosen material allow said liner 6 to adapt to the interior of the tank 1.
  • the liner 6 is kept adhering against the interior of the tank 1 by an arrangement of hoop elements 7, 8, 9 which prevent the liner 6 becoming flabby when empty.
  • Figure 2 shows a generic hoop 7 extending over most of the cylindrical wall of the tank 1 and fixed in suitable pockets 8, as shown in Figure 3.
  • This figure shows part of the liner 6 in which a pocket element 8 is formed by welding to receive a hoop 7, which is constructed preferably of plastics material unattackable by the contents of the tank in question.
  • the hoops 7 are installed after the liner 6 has been inserted into the tank 1.
  • Figure 4 shows by way of example an inner liner kit for tanks of the said type, it comprising a folded liner 6 ⁇ , a plurality of hoops 7 ⁇ of which only one is shown, and a container 9 for the liner 6 ⁇ .
  • the liner according to the invention By using the liner according to the invention, any leakages due to perforation of the constituent sheet metal of the tank are eliminated.
  • the liner according to the invention can also be applied to already working tanks containing dregs or sediments, so avoiding the need for their removal and at the same time resulting in a reconditioned structure.
  • FIGS 5 and 6 show a second embodiment of the present invention.
  • the inner liner 12 is inserted into a tank 10 through the manhole 11 as previously described.
  • tubular ribs 13 instead of the hoop elements and pockets there are provided tubular ribs 13 which can be pressurised through a connector 14 fitted with a valve. When the tubular ribs 13 are pressurised they cause the liner 12 to adhere to the inner structure of the tank 10.
  • FIG. 6 shows a modified embodiment of the structure of Figure 5, using the same reference numerals for corresponding parts, and in which the interior of the tank 10 is divided into two compartments ZC and ZA by a baffle 15 preferably constructed of the same material as the liner 12.
  • the compartments ZC and ZA indicate the filling region and withdrawal region for the fuel or the like.
  • apertures 16 position­ed in the bottom of the baffle 15 enable the tank 10 to be filled by feeding the charge into the region ZC with reduced turbulence, and thus reduced fuel turbidity deriving from the lifting of dregs or sediments in the region ZA, from which the non-agitated fuel is withdrawn for consumption.
  • the tank 17 is provided in its interior with a double-walled liner, the walls of which are indicated by 18 and 19 respectively, and the interspace by 20.
  • the tubes 21 can be either pressurised or filled with a convenient material chosen from the various materials which expand on polymerisation, to form a cell structure of greater or lesser rigidity depending on the type of starting material used.
  • a valve 22 is provided for inflation purposes or for injection of the expandable plastics material, together with a valve 23 for feeding into the interspace 20 a gaseous medium at a pressure higher or lower than atmospheric, in order to be able to monitor the fluid-­tightness of the liner by the methods used for double-shell metal tanks.
  • interspace 20 conveniently pressurised, itself causes the outer wall 18 of the liner to adhere to the inner surface of the metal tank 17, any leakages being verified by monitoring the positive inflation pressure of said interspace 20.
  • Figure 8 shows a further modification to the construction shown in Figures 7 and 7a, in which tubular ribs 13 ⁇ are provided extending along a plurality of directrices of the substantially cylindrical tank, these being indicated by way of example as 13 ⁇ a, 13 ⁇ b, 13 ⁇ c etc., and also along the end surfaces, they being pressurised by a pneumatic circuit 14 ⁇ .
  • tubular ribs 13 ⁇ there are positioned further tubular ribs 24 which are preferably pressurised by a circuit 25 which is separate from that used for the tubular ribs 13 ⁇ .
  • the tubular ribs 24 provide improved adherence of the inner liner 12 to the inner surface of the tank 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP87830422A 1986-11-28 1987-11-26 Inneres Schutzsystem für Behälter, insbesondere unterirdische Behälter für Brennstoff und dergleichen Withdrawn EP0269586A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4869386 1986-11-28
IT8648693A IT1214750B (it) 1986-11-28 1986-11-28 Sistema di protezione interna per serbatoi,in particolare serbatoi in terrati per combustibili e simili

Publications (2)

Publication Number Publication Date
EP0269586A2 true EP0269586A2 (de) 1988-06-01
EP0269586A3 EP0269586A3 (de) 1989-01-25

Family

ID=11268083

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87830422A Withdrawn EP0269586A3 (de) 1986-11-28 1987-11-26 Inneres Schutzsystem für Behälter, insbesondere unterirdische Behälter für Brennstoff und dergleichen

Country Status (2)

Country Link
EP (1) EP0269586A3 (de)
IT (1) IT1214750B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2048643A1 (es) * 1992-04-02 1994-03-16 Cervello Boet Forro flexible para instalar en el interior de tanques de almacenamiento de productos quimicos.
FR2901259A1 (fr) * 2006-05-19 2007-11-23 Jean Marc Latour Dispositif de deploiement d'une poche a l'interieur d'un reservoir pour isoler le contenant du contenu
WO2010015099A1 (zh) * 2008-08-04 2010-02-11 中绵集装箱袋（惠州）有限公司 存储容器内衬装置及其使用方法
US20110305409A1 (en) * 2010-06-15 2011-12-15 Russell David D Self-Supporting Bladder System for a Double Wall Tank

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1909827A1 (de) * 1969-02-27 1970-09-10 Wilhelm Reisgies Chem Techn Fa Auskleidung fuer doppelwandige Behaelter wie OEltanks od.dgl.
DE1935207A1 (de) * 1969-07-11 1971-01-14 Bernd Neubacher Auskleidung fuer Behaelter
DE2035853A1 (en) * 1970-07-18 1972-01-27 Fried. Krupp Gmbh, 4300 Essen Detachable tank liner - of quilted foil with polyurethane foam filling to seal and protect tank
DE2654574A1 (de) * 1972-12-19 1978-06-08 Rupf Bolz Otto Dipl Ing Sicherungseinrichtung an fluessigkeitsbehaeltern
DE2940101A1 (de) * 1978-10-05 1980-04-17 Borsari & Co Verfahren zur herstellung eines innenbehaelters zur sanierung eines korrodierten stahlbehaelters sowie innenbehaelter eines tanks
US4552166A (en) * 1984-04-06 1985-11-12 Dc Technologies, Inc. Secondary containment system and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1909827A1 (de) * 1969-02-27 1970-09-10 Wilhelm Reisgies Chem Techn Fa Auskleidung fuer doppelwandige Behaelter wie OEltanks od.dgl.
DE1935207A1 (de) * 1969-07-11 1971-01-14 Bernd Neubacher Auskleidung fuer Behaelter
DE2035853A1 (en) * 1970-07-18 1972-01-27 Fried. Krupp Gmbh, 4300 Essen Detachable tank liner - of quilted foil with polyurethane foam filling to seal and protect tank
DE2654574A1 (de) * 1972-12-19 1978-06-08 Rupf Bolz Otto Dipl Ing Sicherungseinrichtung an fluessigkeitsbehaeltern
DE2940101A1 (de) * 1978-10-05 1980-04-17 Borsari & Co Verfahren zur herstellung eines innenbehaelters zur sanierung eines korrodierten stahlbehaelters sowie innenbehaelter eines tanks
US4552166A (en) * 1984-04-06 1985-11-12 Dc Technologies, Inc. Secondary containment system and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2048643A1 (es) * 1992-04-02 1994-03-16 Cervello Boet Forro flexible para instalar en el interior de tanques de almacenamiento de productos quimicos.
FR2901259A1 (fr) * 2006-05-19 2007-11-23 Jean Marc Latour Dispositif de deploiement d'une poche a l'interieur d'un reservoir pour isoler le contenant du contenu
WO2010015099A1 (zh) * 2008-08-04 2010-02-11 中绵集装箱袋（惠州）有限公司 存储容器内衬装置及其使用方法
US20110305409A1 (en) * 2010-06-15 2011-12-15 Russell David D Self-Supporting Bladder System for a Double Wall Tank
US8899835B2 (en) * 2010-06-15 2014-12-02 David D. Russell Self-supporting bladder system for a double wall tank

Also Published As

Publication number Publication date
IT1214750B (it) 1990-01-18
EP0269586A3 (de) 1989-01-25
IT8648693A0 (it) 1986-11-28

Similar Documents

Publication Publication Date Title
US5072623A (en) Double bladder fluid containment system
US4653312A (en) Storage tanks having formed rigid jacket for secondary containment
US4131226A (en) Sulfur electrode container construction and method of manufacture
US4696186A (en) Storage tanks having secondary containment means
US4607522A (en) Storage tanks having secondary containment means
US4912966A (en) Total containment means for storage tank systems
US4825687A (en) Storage tanks having formed inner tank for primary containment
AU4796493A (en) Connecting device for pipe assemblies
EP0727023A1 (de) Sekundäres rückhaltesystem unter verwendung flexibler untergrundrohre
US1954581A (en) Storage tank
US4871078A (en) Storage tanks with formed jacket for secondary containment
US5054645A (en) Storage tank systems with enhanced strength having in situ formed inner tank
CA2059445C (en) Double wall underground storage tank
EP0269586A2 (de) Inneres Schutzsystem für Behälter, insbesondere unterirdische Behälter für Brennstoff und dergleichen
US4942978A (en) Protective liner for containers
US4859262A (en) Method of making storage tanks with secondary containment
US4951844A (en) Double walled cylindrical-shaped storage tank with independent monitoring of tank areas
US3838795A (en) Fuel bag for arrangement in a fuel tank
US20080164261A1 (en) Replaceable Tank Lining
SU1308190A3 (ru) Резервуар дл транспортировки жидкости,газа или сыпучего материала с разгрузкой под действием силы т жести
US4913310A (en) Storage tanks with secondary containment
US4819821A (en) Cylindrical-shaped storage tanks with formed outer jacket
US5501243A (en) Liquid storage tank sump
GB2281726A (en) Fuel storage vessel with flexible inner container eg for vehicles
US5039367A (en) Method of forming storage tank system having secondary containment capability

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19890726