EP0033598A2 - Geteilter Tank mit Verstärkung im Gebiet der Verbindung und Verfahren zur Herstellung des Tanks - Google Patents

Geteilter Tank mit Verstärkung im Gebiet der Verbindung und Verfahren zur Herstellung des Tanks Download PDF

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Publication number
EP0033598A2
EP0033598A2 EP81300174A EP81300174A EP0033598A2 EP 0033598 A2 EP0033598 A2 EP 0033598A2 EP 81300174 A EP81300174 A EP 81300174A EP 81300174 A EP81300174 A EP 81300174A EP 0033598 A2 EP0033598 A2 EP 0033598A2
Authority
EP
European Patent Office
Prior art keywords
band
clamping
tank
tank assembly
ring
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Withdrawn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
EP81300174A
Other languages
English (en)
French (fr)
Other versions
EP0033598A3 (de
Inventor
Arthur John Wiltshire
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.)
Structural Fibers Inc
Original Assignee
Structural Fibers Inc
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 Structural Fibers Inc filed Critical Structural Fibers Inc
Publication of EP0033598A2 publication Critical patent/EP0033598A2/de
Publication of EP0033598A3 publication Critical patent/EP0033598A3/de
Withdrawn legal-status Critical Current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
    • B65D90/02—Wall construction
    • B65D90/08—Interconnections of wall parts; Sealing means therefor

Definitions

  • This invention relates to a split tank assembly with reinforcement in the region of a joint, and to a method of making such a reinforced split tank assembly.
  • Bag-moulded fiberglass-reinforced tanks or other similar pressure vessels are disclosed, for example, in United States Reissue Patent Specification No. 25,241 and United States Patent Specification No. 3,138,507.
  • Split tank assemblies of the general class to which the present invention is directed are shown in United States Patent Specifications Nos. 2,709,524 and 3,388,823.
  • Split tank assemblies of the type herein-disclosed provide full access to the interior of the tank for positioning and removal of, for instance, rigid filter elements therein, and for various other purposes.
  • clamping flanges formed of a plastics material are adhered to the tank sections, which flanges can be clamped together; however, the clamping flanges formed of a plastics material are expensive and fit only a given size of tank: therefore, if a manufacturer makes tanks of different diameters, the manufacturer must also provide flanges of different sizes to accommodate various diameters.
  • a longitudinally-extending split tank assembly comprising:-
  • those portions defining both the mating faces are also formed by the bands of filament-wound, resin-impregnated fibers.
  • the sealing means is an 0-ring, conveniently provided in a circumferential groove in one of the mating faces.
  • the clamping means comprises a plurality of clamping members maintained in a spaced array by a band which encircles the flanges.
  • Each clamping member may include a strip having two spaced-apart convergent arms.
  • the tank sections may be formed of a fiber-reinforced plastics material.
  • One embodiment of the split tank assembly of the present invention comprises first and second tank sections, each with an open mouth, the open mouth of the first tank section having a multiplicity of resin-impregnated wound fibers adjacent the open mouth which fibers comprise a first clamping flange, the first clamping flange having an outwardly facing recess extending circumferentially around the flange, there being a circumferentially extending groove in the outwardly facing recess, there being an 0-ring in the groove, the open mouth of the second tank section having a multiplicity of resin-impregnated wound fibers adjacent that open mouth which fibers comprise a second clamping flange, the second clamping flange having an inwardly facing recess extending circumferentially around the flange, the inner diameter of the inwardly facing recess being slightly greater than the outer diameter of the outwardly facing recess so that the first clamping flange may be telescoped into the second clamping flange with the O-ring forming a seal between the f
  • Another aspect of the present invention provides a method of forming a fiber-reinforced split tank assembly formed of a plastic material, the method comprising:- rotating a longitudinally-extending, hollow pressure vessel formed of a plastics material about its longitudinal axis, level winding resin-impregnated filaments on a sidewall region of the vessel while confining the filaments to a relatively narrow band, curing the resin and the filaments, cutting the band and vessel in two at a plane perpendicular to the longitudinal axis and passing through an intermediate region of the band so that a band part is provided adjacent each resulting open mouth, machining a circumferential outwardly facing recess in one band part, machining an 0-ring groove in that outwardly facing recess, machining a circumferential inwardly facing recess in the other band part, providing an 0-ring in the groove, telescoping the band parts together to form a pressure vessel with the 0-ring pressed between the recesses, and clamping the band parts together to form the assembly.
  • the band and vessel are cut in a plane which passes approximately through the midpoint of the band.
  • the assembly 10 includes first and second mating tank sections 11 and 12 formed by transversely splitting an elongated tank having a generally cylindrical sidewall and domed end walls.
  • the tank is originally an integral, bag-moulded, fiber-reinforced, closed tank such as that shown in the aforementioned United States Reissue Patent Specification No. 25,241, the disclosure of which is incorporated herein by reference.
  • Each tank section 11, 12 is provided with an external clampable flange in the form of a band part 13, 14.
  • the band parts 13 and 14 are initially fabricated as a single band 15 by a conventional filament-winding technique.
  • the tank is mounted in a horizontal position for rotation about its longitudinal axis in a filament-winding machine which is similar to a lathe.
  • the sidewall is slightly abraded in the area to be wound.
  • Resin-impregnated fiber filaments are then laid up on the sidewall by a guide which moves back and forth, at a predetermined rate which is geared to the rate of rotation of the vessel, between end guide ends 16 (shown in Figure 2).
  • the rate of traverse is such that the filaments are laid down in a level-wound pattern where there is substantially no side-to-side overlap of the filaments.
  • the tank sections 11 and 12 are formed by rotating the unitary tank about its longitudinal axis while severing the band 15 and the tank with a suitable tool, e.g. a tungsten carbide or diamond cutting tool.
  • a suitable tool e.g. a tungsten carbide or diamond cutting tool.
  • band parts 13 and 14 are machined in the following manner.
  • the band part 13 is machined along the dotted line 17 to provide a recess with a mating face 18 and a circumferential 0-ring groove 19. This operation may be done with a single cutting tool shaped to conform to the shape of the recess (with face 18) and the 0-ring groove 19.
  • a portion 20 of the tank section 12, together with a portion 21 of theband part 14, is machined away to form an inwardly facing recess with an inwardly facing mating face 22 which has a diameter slightly greater than the diameter of the mating face 18.
  • an 0-ring 28 is inserted in the 0-ring groove 19 and,.as is indicated in Figure 4, the tank sections 11 and 12 brought together by telescoping the face 18 into the face 22 so that the 0-ring 28 is firmly pressed between the band parts 13 and 14.
  • the ends of the band parts 13 and 14 are undercut slightly to provide a gripping surface for the clamps.
  • clamps 23 As indicated in Figures 4 and 5, suitable clamping means, in the form of clamps 23, is provided.
  • Each clamp 23 has what can loosely be regarded as a ' C-shaped configuration in the form of a strip with two spaced-apart convergent arms and is provided with raised stiffening portions 24 at the arms.
  • the clamps 23 are held in place by a band 25 which extends through struck-out tab portions 26 on each clamp 23.
  • the band is fastened together by a suitable fastener; in the illustrated embodiment this is a nut and bolt 27.
  • the clamps 23 may be employed on tanks of various diameters, as opposed to prior art techniques wherein integral bands were employed as the clamping means.
  • the arms of the clamps are slightly inclined toward each other so that they conform to the undercut portions of the band parts 13 and 14.
  • the tank sections must be abutted to permit the arms to clear the ends of the band parts.
  • the sections 11 and 12 move apart slightly, as is indicated in Figure 4, so that the clamps 23 cannot be removed while the tank is under pressure.
  • the clamping means may be employed to clamp together the sections of a variety of tanks having different diameters.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
EP81300174A 1980-01-18 1981-01-15 Geteilter Tank mit Verstärkung im Gebiet der Verbindung und Verfahren zur Herstellung des Tanks Withdrawn EP0033598A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11335180A 1980-01-18 1980-01-18
US113351 1980-01-18

Publications (2)

Publication Number Publication Date
EP0033598A2 true EP0033598A2 (de) 1981-08-12
EP0033598A3 EP0033598A3 (de) 1981-08-26

Family

ID=22348937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81300174A Withdrawn EP0033598A3 (de) 1980-01-18 1981-01-15 Geteilter Tank mit Verstärkung im Gebiet der Verbindung und Verfahren zur Herstellung des Tanks

Country Status (8)

Country Link
EP (1) EP0033598A3 (de)
JP (1) JPS56147964A (de)
AU (1) AU6623681A (de)
BR (1) BR8100261A (de)
CA (1) CA1141687A (de)
DK (1) DK18581A (de)
ES (1) ES267096Y (de)
NO (1) NO810141L (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8365938B2 (en) * 2004-09-09 2013-02-05 Dynasafe International Ab Gas-tight transport container for detonation-dangerous material

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58123906U (ja) * 1982-02-16 1983-08-23 内田鍜工株式会社 電柱用バンド
JPS58127208U (ja) * 1982-02-23 1983-08-29 内田鍛工株式会社 電柱用バンド
JP5419156B2 (ja) * 2009-11-26 2014-02-19 国立大学法人九州大学 複合容器の製造試験用ライナー、及び、製造試験方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE25241E (en) * 1962-09-11 Method of making impregnated glass fiber articles
US288638A (en) * 1883-11-20 Tool for facing emery-wheels
US3138507A (en) * 1961-06-15 1964-06-23 Structural Fibers Fiber reinforced plastic articles and method of making the same
US3388823A (en) * 1967-01-11 1968-06-18 Fleming T J Co Double chamber compressed fluid reservoir
US3655085A (en) * 1968-04-12 1972-04-11 Arde Inc Filament wound spherical pressure vessel
US3700512A (en) * 1969-09-05 1972-10-24 Owens Corning Fiberglass Corp Method of forming a fluid retaining wall
US3843429A (en) * 1970-09-18 1974-10-22 Stebbins Eng And Mfg Co Glass fiber reinforced resin tank structures and method of fabricating
US4005233A (en) * 1975-10-30 1977-01-25 The United States Of America As Represented By The United States Energy Research And Development Administration Filament wound structure and method
US4133442A (en) * 1976-12-27 1979-01-09 Structural Fibers, Inc. Tank closure assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8365938B2 (en) * 2004-09-09 2013-02-05 Dynasafe International Ab Gas-tight transport container for detonation-dangerous material

Also Published As

Publication number Publication date
EP0033598A3 (de) 1981-08-26
DK18581A (da) 1981-07-19
AU6623681A (en) 1981-07-23
NO810141L (no) 1981-07-20
ES267096U (es) 1984-10-01
CA1141687A (en) 1983-02-22
ES267096Y (es) 1985-04-01
JPS56147964A (en) 1981-11-17
BR8100261A (pt) 1981-08-04

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Inventor name: WILTSHIRE, ARTHUR JOHN