US2209399A - Tank roof - Google Patents

Tank roof Download PDF

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Publication number
US2209399A
US2209399A US182671A US18267137A US2209399A US 2209399 A US2209399 A US 2209399A US 182671 A US182671 A US 182671A US 18267137 A US18267137 A US 18267137A US 2209399 A US2209399 A US 2209399A
Authority
US
United States
Prior art keywords
roof
sheet
tank
plate
portions
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
US182671A
Other languages
English (en)
Inventor
Earie W Hall
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.)
Standard Oil Development Co
Original Assignee
Standard Oil Development Co
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 Standard Oil Development Co filed Critical Standard Oil Development Co
Priority to US182671A priority Critical patent/US2209399A/en
Priority to FR845354D priority patent/FR845354A/fr
Application granted granted Critical
Publication of US2209399A publication Critical patent/US2209399A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D90/22—Safety features
    • B65D90/32—Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure
    • B65D90/36—Weakened parts

Definitions

  • a further object of the invention is to provide for a substantially fluid tight joint between adjacent sections of a tank roof while attaining the objects previously set forth.
  • Fig. l is a sectional view of a portion of a storage tank constructed according to the invention.
  • Figs. 2, 3, 4, a-nd 5 are similar views of alternate forms of construction according to the invention.
  • Fig, 6 is a diagrammatic view of a portion of a tank showing the resolution of forces exerted in the roof plates.
  • the numeral l designates the side wall of a tank, to which is secured an angle brace 2 by means of rivets 3, or by other equivalent means.
  • a roof plate l is joined to the angle brace 2 by means of a sheet or plate of material 5 which material has a tensile strength less than that of any other portion of the roof or walls of the tank.
  • the sheet or plate of low tensile material may be of aluminum or a similar weak metalror it may be o! a heavy fabric, which may or may not be treated with any of a variety of preservative or stiffening materials.
  • the plate 5 is secured to the fixed and separable portions ot the tank, as represented by the angle .brace 2 and the' roof plate 4 respectively, adjacent co
  • plates i and l are their adjoining edges, by means of'cap plates 5 and 1 and rivets or bolts, as indicated at l and 9 respectively.
  • the cap plates 6 and 1 may, one or both, also function as' shear plates as will later be described.
  • the sheet of irangible material is secured tothe upper mrface of the brace 2 and the cap plate 5 extends beyond the edge of the brace.
  • the roof plate l bears on the ipper surface of the cap plate 5, but extends outri/ardly a sum'cient distance to overlap the end/of the brace I.'
  • the plate 5 lextends beyond the edge of the angle brace 2
  • the plate '6 terminates in spaced relation to the edge of the brace 2 and roof plate I bears upon the sheet 5 directly.
  • the sheet 5 is flat rather than having an offset ⁇ Surface conformation.
  • Figs. 3 and 4 are shown two other forms of construction in both of which the roof plate 4 or separable portion, overlaps the angle brace Z or fixed portion of the roof.
  • the offset lsheet, 5 is disposed entirely within the'tank a-s are the cap plates 6 and l.
  • the offset sheet 5 and cap plates 5 and l are disposed on the upper or outer surface of the tank.
  • a supplementary means for sealing the joint between iixed and separable portions is shown at I0.
  • This means may consist of a plastic or semi-plastic adhesive material such as a sealing material containing a polymer of isobutylene, or it may be any other well known.
  • caulking vor sealing material such as oakum or manganese putty.
  • a particular advantage is de- Y rived from the construction according to Fig. 4, in that failure of the sheet 5, without substantial or violent displacement of the separable portions of the tank roof, may be easily remedied without entering the tank or moving the separable portion to insert a new sheet 5 or sections thereof, especially if the rivets 8 and 9 shown in the previous Jfigures are replaced by bolts I2 or studs il.
  • Fig. 5 there is illustrated av form of oonstruction in which the relationship of the ilxed and separable portions of the tank roof. as represented by brace 2 and roof plate l, is edge to edge.
  • the weight of the separable portion or plate l may be suitably and entirely borne by structure such as support Il.
  • the sheet 5 will be ilat as in Fig. 2 and may be disposed either interiorly of the tank as shown in heavy lines or exteriorly as shown by the dotted line portion. If the sheet 5 be disposed interiorly, a caulking or packing material I0, as previously described, should be used in the space between the adjoining edges of the respective roof sections.
  • the vectors .1ry and x-z indicate respectively and in approximate proportion the relation of the forces which tend to cause failure of the joints in a tankroof, under pressure exerted within the tank. It is apparent, therefore, that the nature of the material used for the sheet 5 should be such that it will fail under tension before the force exerted in the direction of vector z-z is such as to shear the rivets, bolts or other means used to join the other portions of the tank roof. In addition, it is necessary that the force required to cause failure of the sheet 5 under tension should be less than that which, when exerted in the direction of the vector or the roof plate 4 so as to facilitate failure of the sheet along the lines indicated at points a f and b.
  • a roof for storage tanks comprising a roof portion fixedly joined to the tank walls; a separable roofportion supported in substantially free relation to the fixed portion; frangible sheet means disposed in surface contact with each of said roof portions; and connector means disposed in substantially opposed relation marginally of said-sheet means, separately joining each roof portion to the sheet means in substantially fluid tight relation.
  • a roof for storage tanks comprising a roof portion fixedly joined to the tank walls; a separable roof portion supported in substantially free relation to ther fixed portion; sheet means of relatively low'tensile strength, disposed in surface contact with each of said roof portions; and connector means disposed in substantially opposed relation marginally of said sheet means, separately joining each roof portion to the sheet means in substantially fluid tight relation.
  • a roof for storage tanks comprising a roof portion xedly joined to the tank walls; a separable roof portion supported in substantially free relation to the xed portion; frangible sheet means covering tlfe joint between said fixed and separable portions; and connector means -dis posed in substantially opposed relation marginally of said sheet ⁇ means, separately joining each roof portion to the sheet means.
  • said sheet of frangible material is disposed exteriorly of the roof.
  • a roof for storage tanks according to claim 3 in which said sheet -of frangible material is dis-,-
  • a roof for storage tanks comprising a separable roof portion and a portion fixedly joined to the tank walls, said portions being disposed.
  • a sheet of frangible material disposed between the overlapping portions of the roof and extending inwardly beyond the edge of the overlapped portion thereof and out.
  • a cap plate for the inner edge of said shet a cap plate for. the outer edge of said sheet, means for securing said outer edge. to the upper surface of said overlapped portion and -means for securing said inner edge to the ⁇ lower surface of said overlapping portion.
  • a roof for storage tanks comprising a separable roof portion and a roof portion fixedlyjoined to the tank walls, a sheet of frangible material closing the joint between said portions, means for separately securing said sheet to each of the xed and separable portions and means for inducing rupture of the/ sheet under positive EARLEW. HALL.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
US182671A 1937-12-31 1937-12-31 Tank roof Expired - Lifetime US2209399A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US182671A US2209399A (en) 1937-12-31 1937-12-31 Tank roof
FR845354D FR845354A (fr) 1937-12-31 1938-10-29 Dessus ou toiture de réservoir

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US182671A US2209399A (en) 1937-12-31 1937-12-31 Tank roof

Publications (1)

Publication Number Publication Date
US2209399A true US2209399A (en) 1940-07-30

Family

ID=22669514

Family Applications (1)

Application Number Title Priority Date Filing Date
US182671A Expired - Lifetime US2209399A (en) 1937-12-31 1937-12-31 Tank roof

Country Status (2)

Country Link
US (1) US2209399A (fr)
FR (1) FR845354A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2664177A (en) * 1947-10-10 1953-12-29 Andrew B Hammitt Flashing construction
US2868412A (en) * 1954-04-15 1959-01-13 Black Sivalls & Bryson Inc Safety pressure relief device
FR2461888A1 (fr) * 1979-07-18 1981-02-06 Nippon Tansan Gas Cy Ltd Cartouche de securite pour recipient contenant un gaz sous pression
US4899960A (en) * 1987-05-08 1990-02-13 Mbb Gmbh Decompression panel for aircraft partition
US4989752A (en) * 1987-02-18 1991-02-05 Monsanto Company Frangible roof joint for storage tanks
FR2992635A1 (fr) * 2012-06-29 2014-01-03 Tissot Ind Reservoir frangible de stockage

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2664177A (en) * 1947-10-10 1953-12-29 Andrew B Hammitt Flashing construction
US2868412A (en) * 1954-04-15 1959-01-13 Black Sivalls & Bryson Inc Safety pressure relief device
FR2461888A1 (fr) * 1979-07-18 1981-02-06 Nippon Tansan Gas Cy Ltd Cartouche de securite pour recipient contenant un gaz sous pression
US4989752A (en) * 1987-02-18 1991-02-05 Monsanto Company Frangible roof joint for storage tanks
US4899960A (en) * 1987-05-08 1990-02-13 Mbb Gmbh Decompression panel for aircraft partition
FR2992635A1 (fr) * 2012-06-29 2014-01-03 Tissot Ind Reservoir frangible de stockage

Also Published As

Publication number Publication date
FR845354A (fr) 1939-08-21

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