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US3330118A - Sunken tank with floating cover for liquid gas storage - Google Patents

Sunken tank with floating cover for liquid gas storage Download PDF

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Publication number
US3330118A
US3330118A US427026A US42702665A US3330118A US 3330118 A US3330118 A US 3330118A US 427026 A US427026 A US 427026A US 42702665 A US42702665 A US 42702665A US 3330118 A US3330118 A US 3330118A
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US
United States
Prior art keywords
roof
tank
joint
basin
cover
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.)
Expired - Lifetime
Application number
US427026A
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English (en)
Inventor
Biais Maurice
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.)
Engie SA
Original Assignee
Gaz de France SA
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 Gaz de France SA filed Critical Gaz de France SA
Application granted granted Critical
Publication of US3330118A publication Critical patent/US3330118A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/005—Underground or underwater containers or vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0329—Foam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0337—Granular
    • F17C2203/0341—Perlite
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0345—Fibres
    • F17C2203/035—Glass wool
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0646—Aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/0663—Synthetics in form of fibers or filaments
    • F17C2203/0673—Polymers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0678—Concrete
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0338—Pressure regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/03—Treating the boil-off
    • F17C2265/031—Treating the boil-off by discharge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0142—Applications for fluid transport or storage placed underground
    • F17C2270/0144—Type of cavity
    • F17C2270/0149—Type of cavity by digging cavities

Definitions

  • the present invention has essentially for object a tank for the storage of liquefied gases at low temperature comprising a shallow basin dug beneath the level of the ground, a peripheral bank raised above said ground level for confining said liquefied gas in said basin, heatinsulated fluid-type cover means floating on the free upper surface of said liquefied gas and adapted to follow the displacements of the latter, and sealing means connecting the outer periphery of said cover means to said peripheral bank, wherein said cover and sealing means comprise at least two fluid-tight sheet assemblies having confined therebetween a layer of insulating ma terial, said sheet assemblies each consisting of a composite sheet formed of at least a metal sheet applied to at least one face of a plastic film.
  • a sunken tank having a floating cover, for the storage of liquefied natural gas or liquefied oil gas at low temperature.
  • the tanks made of ice and intended to form complementing stores, or the tangs made of prestressed concrete without any lining, having an internal heat-insulation made of expanded plastic materials such as polyurethane are those which seem to be the most advantageous as regards initial expenditure. They are however attended by some inconveniences in that their installation should be especially well-designed where the tank has to be protected against the risk of being upheaved through freezing of the ground if some water-bearing stratum is present therebeneath.
  • the present invention provides a more flexible construction wherein a distortion of the ground, even if rather important, is not liable to have prejudicial effects.
  • the solution provided by the invention has the additional advantage of being more economical than those heretofore proposed for the storage of liquefied gases at low temperature within frozen grounds.
  • the tanks according to the invention for the storage of liquefied gas at low temperature is characterized in that it comprises a shallow basin covered with a sealed cover or roof, connected to the peripheral bank or rim of said basin by a fluid-tight peripheral connection, said connection including means such as bellows, folds or similar expanding portions allowing movements of the cover, which will follow the surface of the stored liquid from the upmost plane of the basin into the bottom thereof, and conversely.
  • the aforesaid cover is of such mass as to float on the free surface of the stored liquefied gas.
  • the basin is of frusto-conical shape, with a Wall flaring upwards and the cover or roof includes a disc-shaped center portion having substantially the same diameter as the basin bottom, said center portion being connected to the basin bank by a flexible portion in the shape of a surface of revolution forming part of a toric surface.
  • the cover consists of a disc with concentric peripheral undulations and possibly radial undulations.
  • FIGURE 1 shows in diametral section part of a storage tank according to the invention, including cover means connected to the basin bank by a flexible portion in the shape of a surface of revolution forming part of a toric surface;
  • FIGURE 2 shows on an enlarged scale a detail of the tank in FIGURE 1;
  • FIGURE 3 shows on a very large scale the connection of the roof periphery to the basin bank of the tank of FIGURES 1 and 2;
  • FIGURE 4 is a cross-sectional view of the spacer means provided between the sheets forming the roof of the tank shown in FIGURES 1 and 2;
  • FIGURE 5 shows in diametral section part of la storage tank according to another embodiment of the invention.
  • FIGURE 6 is a fragmentary radial sectional view of an undulation of the cover of a tank pertaining to the type shown in FIGURE 5;
  • FIGURE 7 is a fragmentary radial sectional view of a tank of the same general type as shown in FIGURE 5, according to a modified embodiment.
  • FIGURE 1 shows a basin 10 filled with liquefied natural gas.
  • the basin 10 consists of a circular excavation which is dug (with a bulldozer or other mechanical means allowing highly economical construction) to a low depth beneath the level 12 of the ground, in loose soils, preferably above the upmost level of the water-bearing stratum, so as to avoid any interference by incoming waters.
  • the bottom 14 of basin 10 is substantially horizontal.
  • To construct the basin bank 16 use is made of the earth or similar materials excavated from the basin, which are banked .up above the ground level 12.
  • the bottom 14 of basin 10 may for example lie at 6-10 feet beneath the ground level 12 and the top or crest 18 of bank or rim 16 stands at about 23-33 feet above bottom 14.
  • the rim 16 forms an annular peripheral bank or mound which surrounds completely the basin 10, the diameter of which may range up to several hundred feet.
  • a heat-insulating layer 20 e.g. of foam glass, over the external slope of rim 16 and over its top 18, which is preferably horizontal.
  • the tank 10 is closed at its top by a floating roof or cover which, as illustrated, consists of a disc 22 arranged in the central area of the tank, fluid-tight deformable connecting means being provided between the periphery 24 of disc 22 and the crest 18 surrounding basin 10.
  • a floating roof or cover which, as illustrated, consists of a disc 22 arranged in the central area of the tank, fluid-tight deformable connecting means being provided between the periphery 24 of disc 22 and the crest 18 surrounding basin 10.
  • a flexible connecting element 26 which, when the basin is filled with liquid whereon the disc 22 is floating, is in the form of a flexible surface of revolution in the shape of half a torus of circular crosssection out along a diametral plane.
  • the external periphery of the toric connection 26 is in fluid-tight relationship to the rim 16, as will appear hereinafter.
  • the floating roof consisting of the disc 22 and the toric connection 26 has heat-insulating properties and is flexible.
  • the disc 22 which, as noted before, has substantially the same diameter as the bottom of the basin, is constructed within said bottom, previously well flattened. It may for example be formed of two sheets 32 and 34, preferably of composite structure, having confined therebetween a finely divided heat-insulating material such as perlite, or heat-insulating fibers.
  • the plastic film is preferably directed to the atmosphere, the fabric being in contact with the insulation 36, as
  • the beads 38 are preferably made from a composite sheet of the same materials as sheets 32 and 34, which is so coiled and glued as to form a cylinder having confined therein finely divided insulating material 40.
  • the beads 38 are arranged concentrically with respect to one another, their lower and upper edges being glued to the sheets 32 and 34 respectively. Where a more efiicient partitioning is to be provided, then it may be contemplated to arrange further beads in radial positions (not shown).
  • the toric connection 26 is, like the disc-shaped roof, in the form of a case made of two composite sheets 46 and 48 including a layer of fabric and a layer of plastic film associated with a metal sheet, said case being filled with pulverulent insulating material.
  • pulverulent insulation perlite or the like
  • FIGURE 2 shows'in full line the roof 22 and the toric connection 26 in the positions they normally assume when the tank is filled, and in dash-and-dot lines the various positions they assume as the tank is being emptied.
  • the descent of the disc 22 within the tank 10 is attended by a relatively low increase of the radius of curvature of the toric connection 26 which is acted upon by the internal gas pressure, so that said connection may undergo the necessary deformations without risk of being torn off.
  • the sheets 46 and 48 of the toric connection 26 are joined together along their external edge and are extended into askirt 50,
  • the water may be frozen by circulating liquefied gas at low temperature thr ugh tubes (not shown) submerged in channel 52.
  • the ice t us obtained in channel 52 extends into the mound 16.
  • the tori-c connection 26 may pivot
  • a bead 54 filled with insulating powder or fibers 56 is provided between band 50 and the insulation 20.
  • a fence 25 acting as a battle to protect the tank against the action of the wind.
  • FIGURE 5 shows a tank for the storage of liquefied gases which is of the same general type as that described with reference'to FIGURES 1-4, but differs therefrom by the design of the deformable peripheral portion of its floating roof. 7
  • FIGURE 5 the same reference numerals are assigned to the portions of the store identical with those of the store in FIGURE 1, namely the basin 10, its bottom 14 and its rim 16, heat-insulated at 20.
  • the roof 60 of the tank shown in FIGURE 5 has concentrical undulations 62 allowing the peripheral portion of roof 68 to deflect between its uppermost position (FIG- URE 5) and its lowermost position, where it engages the bottom 14 of basin 10.
  • Diagrammatically shown at 64 are beads similar to the beads 38 of the embodiment of FIGURE 1, adapted to hold the insulation between the two composite sheets (each indicated by a single line in FIGURE 5) properly positioned. 1
  • FIGURE 6 is a sectional view, on an enlarged scale, of one undulation of a tank roof of the same type as that shown in FIGURE 5.
  • FIGURE 6 there is'shown at 66 the upper composite sheet and at 68 the lower com- 7 posite sheet of the roof. Interposed between the upper sheet 66 and lower sheet '68 is a layer 70 of insulating and/ or fibers. As shown in the drawing, on either.
  • Some stiflening elements 74 may consist of plates of a certain mass, which act to ballast the roof according to the above defined conditions.
  • FIGURE 7 shows a modified tank of the type illustrated in FIGURE 5, Le. including coaxial undulations or the locations where the waves 80, 82 and 84 are to be which depends radially from the bottom of a bead 44 onto which the encasing sheets 46 and 48 are glued.
  • the skirt or band 50 is arranged in a groove or channel 52 provided in the top of rim 16.
  • the channel 52 is defined by substantially vertical concrete walls 53, while its bottom formed are defined on the lower film of the roof by rollshaped floaters 81, 83, 85, in concentric annular setting about the central axis of the tank.
  • the roof periphery includes a bead 90 prolonged by a skirt 92 which is of a material identical or similar to that of the upper and lower sheets of the roof and is fluid-tightly embedded in the ice contained in a channel 94 in the top of rim 88.
  • FIGURE 7 show the .position assumed by the roof when the tank is but partly filled;
  • a flexible cover arranged above waves 80, 82 and 84. As shown, this cover 98 is inflated (by means of nitrogen or other inert gas, for example). The purpose of this cover 98 is to avoid the accumulation of water between successive Waves or to remove such water which might freeze in winter and prevent normal operation of the waves. In Windy weather, the cover 93 is deflated (since the wind has but very little hold on the waves).
  • the tanks just described are low-pressure tanks (as compared with the conventional tanks). However, should some pressure increase be desired, then the roof may be loaded with a layer of sand or water (not exceeding one inch or so). It should be noted that a blower operated by a responsive regulator is normally used to discharge the evaporated gases from the upper part of the tank. In the case of the store of FIGURE 1 or of that of FIGURE 5, having a diameter of the order of several hundred feet, the roof thickness will be in the range of about 8-l6 inches according to the preset evaporating conditions.
  • the bottom of these tanks may be either left as such after proper flattening, or covered with a thin bed of gravel or concrete for cleanness purposes, but it may also be contemplated to form thereon a bed of ice having a thickness of one or more inch to avoid any direct contact between the stored liquefied gas and the soil.
  • the tanks according to the invention are safe to a very high degree. Since the mound 16 and bottom 14 are frozen to a substantial depth, any risk of accidental discharge of liquefied gas is eliminated. Moreover, the thick layer of incombustible pulverulent insulation lying between the root sheets, the low volume of gas which is entrapped only beneath the connection and the low pressure of this gas all ensure a much higher degree of safety than in the other sunken or half-sunken tanks or even in the underground tanks, wherein a falling in of the vaults might cause intense vaporization.
  • Such tanks have also proven advantageous in that they require no foundation, this being highly important since such stores will usually be installed at the sea-side or along rivers, that is in soils of general alluvial character. This suppression of the foundations moreover allows of substantially reducing the time required for the construction.
  • a tank for the storage of liquefied gases at low temperature comprising -a shallow basin dug beneath the level of the ground, a peripheral bank raised above said ground level for confining said liquefied gas in said basin, heat-insulated fluid-tight cover means floating on the free upper surface of said liquefied gas and adapted to follow the displacements of the latter, and sealing means connecting the outer periphery of said cover means to said peripheral bank, said cover and sealing means comprising at least two fluid-tight sheet assemblies having confined therebetween a layer of insulating material, said sheet assemblies each consisting of a composite sheet formed of at least a metal sheet applied to at least one face of a plastic film.
  • a tank according to claim 1 wherein said insulating material is in a finely divided state, spacer means being provided between said sheet assemblies.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
US427026A 1964-01-22 1965-01-21 Sunken tank with floating cover for liquid gas storage Expired - Lifetime US3330118A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR961096A FR1408180A (fr) 1964-01-22 1964-01-22 Réservoir enterré, à troit flottant, pour stockage de gaz liquéfiés à basse température

Publications (1)

Publication Number Publication Date
US3330118A true US3330118A (en) 1967-07-11

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US427026A Expired - Lifetime US3330118A (en) 1964-01-22 1965-01-21 Sunken tank with floating cover for liquid gas storage

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US (1) US3330118A (tr)
ES (1) ES308403A1 (tr)
FR (1) FR1408180A (tr)
GB (1) GB1054731A (tr)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366977A (en) * 1967-03-23 1968-02-06 Carl A. Koehler Swimming pool cover
US3501917A (en) * 1968-06-14 1970-03-24 Phillips Petroleum Co Liquid storage
US3504496A (en) * 1968-09-30 1970-04-07 Exxon Research Engineering Co Storage tank
US3533110A (en) * 1969-02-25 1970-10-13 Joseph G Gisondi Swimming pool cover
US3600721A (en) * 1967-09-01 1971-08-24 Eugene H Pusey Swimming pool cover
US3667641A (en) * 1970-03-02 1972-06-06 Howard S Dial Reservoir cover arrangement
US3736754A (en) * 1970-04-14 1973-06-05 Co Fra Des Petroles Reservoirs for the storage of liquids especially volatile liquids
US3815367A (en) * 1973-03-23 1974-06-11 J Collins Floating reservoir cover
US3874175A (en) * 1972-09-05 1975-04-01 Environetics Inc Apparatus for containing waste materials
US3933628A (en) * 1974-07-10 1976-01-20 Bio-Gas Of Colorado, Inc. Method and apparatus for the anaerobic digestion of decomposable organic materials
US3943721A (en) * 1973-07-20 1976-03-16 Campagnie Francaise Des Petroles, Societe Anonyme Reservoir for storing hydrocarbon liquids and process for fabricating the same
US3991900A (en) * 1975-10-01 1976-11-16 Burke Industries, Inc. Reservoir cover and canalizing means
US4139117A (en) * 1976-09-30 1979-02-13 Dial Howard S Floating cover assembly
US4247220A (en) * 1977-12-05 1981-01-27 Vladimir Furman Subterranean storage of liquids
US4672691A (en) * 1985-12-06 1987-06-16 Adi Limited Bulk volume fermenter
US6497533B2 (en) 2000-11-16 2002-12-24 Degarie Claude J. Drainage system with membrane cover and method for covering wastewater reservoir
US20030066789A1 (en) * 2001-10-05 2003-04-10 Agri Covers, Inc. Covering systems and venting methods
USRE41442E1 (en) 1993-10-22 2010-07-20 Industrial & Environmental Concepts, Inc. Insulated removable pond cover
US20150016889A1 (en) * 2013-07-10 2015-01-15 Barak Yekutiely Floating anchor curb system
US9591797B2 (en) 2013-11-14 2017-03-14 Industrial & Environmental Concepts, Inc. Cover systems with fusion welds
US10707802B1 (en) 2017-03-13 2020-07-07 AquaEnergy, LLC Pressurized pumped hydro storage system
US11141952B2 (en) 2015-04-06 2021-10-12 Industrial & Environmental Concepts, Inc. Sludge covers, sludge management systems, and related methods
US11548725B2 (en) 2013-03-15 2023-01-10 Industrial & Environmental Concepts, Inc. Cover systems, tank covering methods, and pipe retention systems
US11916508B1 (en) 2017-03-13 2024-02-27 Aquaenergy Llc Underground pumped hydro storage

Citations (7)

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Publication number Priority date Publication date Assignee Title
US1580194A (en) * 1924-03-28 1926-04-13 Clifton A Glass Oil tank
US1909484A (en) * 1931-04-14 1933-05-16 Doherty Res Co Liquid storage reservoir
US2211958A (en) * 1939-01-12 1940-08-20 Mahaffey Birch Oliver Reservoir
US2970716A (en) * 1958-12-29 1961-02-07 Jersey Prod Res Co Floating roof for oil storage reservoir
US3159006A (en) * 1960-04-20 1964-12-01 Conch Int Methane Ltd Ground reservoir for the storage of liquefied gases
US3249251A (en) * 1963-01-07 1966-05-03 Conch Int Methane Ltd Thermally insulated and counterweighted roof
US3283512A (en) * 1963-08-19 1966-11-08 Phillips Petroleum Co Earthen storage for volatile liquids and method of constructing the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1580194A (en) * 1924-03-28 1926-04-13 Clifton A Glass Oil tank
US1909484A (en) * 1931-04-14 1933-05-16 Doherty Res Co Liquid storage reservoir
US2211958A (en) * 1939-01-12 1940-08-20 Mahaffey Birch Oliver Reservoir
US2970716A (en) * 1958-12-29 1961-02-07 Jersey Prod Res Co Floating roof for oil storage reservoir
US3159006A (en) * 1960-04-20 1964-12-01 Conch Int Methane Ltd Ground reservoir for the storage of liquefied gases
US3249251A (en) * 1963-01-07 1966-05-03 Conch Int Methane Ltd Thermally insulated and counterweighted roof
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US3366977A (en) * 1967-03-23 1968-02-06 Carl A. Koehler Swimming pool cover
US3600721A (en) * 1967-09-01 1971-08-24 Eugene H Pusey Swimming pool cover
US3501917A (en) * 1968-06-14 1970-03-24 Phillips Petroleum Co Liquid storage
US3504496A (en) * 1968-09-30 1970-04-07 Exxon Research Engineering Co Storage tank
US3533110A (en) * 1969-02-25 1970-10-13 Joseph G Gisondi Swimming pool cover
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US3874175A (en) * 1972-09-05 1975-04-01 Environetics Inc Apparatus for containing waste materials
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US3943721A (en) * 1973-07-20 1976-03-16 Campagnie Francaise Des Petroles, Societe Anonyme Reservoir for storing hydrocarbon liquids and process for fabricating the same
US3933628A (en) * 1974-07-10 1976-01-20 Bio-Gas Of Colorado, Inc. Method and apparatus for the anaerobic digestion of decomposable organic materials
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US4139117A (en) * 1976-09-30 1979-02-13 Dial Howard S Floating cover assembly
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USRE41442E1 (en) 1993-10-22 2010-07-20 Industrial & Environmental Concepts, Inc. Insulated removable pond cover
US6497533B2 (en) 2000-11-16 2002-12-24 Degarie Claude J. Drainage system with membrane cover and method for covering wastewater reservoir
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US7374059B2 (en) 2001-10-05 2008-05-20 Industrial And Environmental Concepts, Inc. Covering systems and venting methods
US11548725B2 (en) 2013-03-15 2023-01-10 Industrial & Environmental Concepts, Inc. Cover systems, tank covering methods, and pipe retention systems
US20150016889A1 (en) * 2013-07-10 2015-01-15 Barak Yekutiely Floating anchor curb system
US9045276B2 (en) * 2013-07-10 2015-06-02 Aquate Group Ltd. Floating anchor curb system
US9591797B2 (en) 2013-11-14 2017-03-14 Industrial & Environmental Concepts, Inc. Cover systems with fusion welds
US11141952B2 (en) 2015-04-06 2021-10-12 Industrial & Environmental Concepts, Inc. Sludge covers, sludge management systems, and related methods
US10707802B1 (en) 2017-03-13 2020-07-07 AquaEnergy, LLC Pressurized pumped hydro storage system
US11916508B1 (en) 2017-03-13 2024-02-27 Aquaenergy Llc Underground pumped hydro storage

Also Published As

Publication number Publication date
ES308403A1 (es) 1965-08-16
FR1408180A (fr) 1965-08-13
GB1054731A (tr)

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