FR2534225A1 - Assembly method for a tank base for a container, and tank thus obtained - Google Patents

Assembly method for a tank base for a container, and tank thus obtained Download PDF

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Publication number
FR2534225A1
FR2534225A1 FR8217045A FR8217045A FR2534225A1 FR 2534225 A1 FR2534225 A1 FR 2534225A1 FR 8217045 A FR8217045 A FR 8217045A FR 8217045 A FR8217045 A FR 8217045A FR 2534225 A1 FR2534225 A1 FR 2534225A1
Authority
FR
France
Prior art keywords
tank
ring
cap
cylindrical body
tank body
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
FR8217045A
Other languages
French (fr)
Other versions
FR2534225B1 (en
Inventor
Michel Etienne Charl Hennemand
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.)
BSL Bignier Schmidt Laurent SA
Original Assignee
BSL Bignier Schmidt Laurent 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 BSL Bignier Schmidt Laurent SA filed Critical BSL Bignier Schmidt Laurent SA
Priority to FR8217045A priority Critical patent/FR2534225A1/en
Publication of FR2534225A1 publication Critical patent/FR2534225A1/en
Application granted granted Critical
Publication of FR2534225B1 publication Critical patent/FR2534225B1/fr
Granted legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/22Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cartridges or like shells
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D88/00Large containers
    • B65D88/02Large containers rigid
    • B65D88/12Large containers rigid specially adapted for transport
    • B65D88/128Large containers rigid specially adapted for transport tank containers, i.e. containers provided with supporting devices for handling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Abstract

The base assembled according to the invention comprises a spherical cap 20, assembled to a cylindrical body 10 by means of a ring 30 obtained for example by bending a flat iron bar. With respect to the conventional base with flanged edges 20a, 20b, the base according to the invention, which is simpler to manufacture, offers an increased capacity 50. Furthermore, the ring participates in the stiffening of the cylindrical body.

Description

La présente invention concerne un procédd d'assemblage d'un fond de citerne pour conteneur, ainsi que la citerne ainsi obtenue. The present invention relates to a method of assembling a tank bottom for a container, as well as the tank thus obtained.

Les citernes des conteneurs-citernes sont géné- ralement formées d'un corps cylindrique ou "virole aux deux extrémités duquel sont soudés deux fonds bombés fermant le corps cylindrique. The tanks of tank-containers are generally formed by a cylindrical body or "ferrule at the two ends of which are welded two rounded ends closing the cylindrical body.

Ces fonds bombés ont une forme générale de calotte sphérique (donc de rayon de courbure constant), pour une répartition optimale des contraintes. Pour permettre le raccordement de cette calotte au corps cylindrique, on réalise généralement un "fond à bord tombé, où la courbure de la calotte devient plus forte au voisinage de sa périphérie ; cette zone à courbure croissante ou "carre" assure a-insi la transition entre la calotte sphérique (de rayon de courbure supérieur au rayon du corps cylindrique) et un "bord droit", cylindrique, qui sera ajusté puis soudé à l'intérieur de ce corps cylindrique, le cas échéant avec mise en place d'entretoises entre l'extérieur de la carre et l'intérieur du corps cylindrique. These domed bottoms have a general shape of a spherical cap (therefore of constant radius of curvature), for an optimal distribution of the stresses. To allow the connection of this cap to the cylindrical body, there is generally produced a "bottom with a fallen edge, where the curvature of the cap becomes stronger near its periphery; this zone with increasing curvature or" square "ensures a-insi the transition between the spherical cap (radius of curvature greater than the radius of the cylindrical body) and a "straight edge", cylindrical, which will be adjusted then welded inside this cylindrical body, if necessary with the installation of spacers between the outside of the edge and the inside of the cylindrical body.

La présente invention propose de réaliser un fond de citerne pour conteneur en évitant d'avoir à fabriquer un tel fond à bord tombé. The present invention proposes to provide a tank bottom for a container while avoiding having to manufacture such a bottom with a fallen edge.

A cette fin, on forme une tôle plane en une calotte sphérique ; on soude la périphérie de cette calotte sur la face intérieure d'une bague dont le diamètre intérieur est sensiblement égal au diamètre extérieur de la calotte et dont le diamètre extérieur est sensiblement égal au diamètre intérieur du corps cylindrique de citerne ; on introduit la bague pourvue de la calotte à l'intérieur du corps de citerne ; enfin, on soude la bague au corps de citerne.  To this end, a flat sheet is formed into a spherical cap; the periphery of this cap is welded to the inner face of a ring whose inner diameter is substantially equal to the outer diameter of the cap and whose outer diameter is substantially equal to the inner diameter of the cylindrical body of the tank; the ring provided with the cap is introduced inside the tank body; finally, the ring is welded to the tank body.

De préférence, la bague est cylindrique et obtenue par cintrage d'un fer plat dont on rapproche les deux extrémités les plus éloignées. Preferably, the ring is cylindrical and obtained by bending a flat iron, the two most distant ends of which are brought together.

L'invention s'applique aussi bien à l'assemblage des surfaces d'extrémité de la citerne qu'à celui des parois de cloisonnement intérieur. The invention applies as well to the assembly of the end surfaces of the tank as to that of the interior partition walls.

Un premier avantage est bien entendu une rationalisation de la fabrication, par suppression des étapes de formage de la carre et du bord droit. En outre, il devient aisé de préparer des ensembles calottebague qui ne seront soudés au corps cylindrique qu'au dernier moment, l'un et l'autre éléments étant stockés à part. Il est en effet aisé d'introduire l'ensemble bague-calotte dans le corps de citerne avec son axe incliné par rapport à celui du corps de citerne, la bague étant ensuite soumise à un pivotement d'une fraction de tour pour aligner les deux axes. A first advantage is of course a rationalization of the production, by eliminating the steps of forming the edge and the straight edge. In addition, it becomes easy to prepare cap-ring assemblies which will not be welded to the cylindrical body until the last moment, the one and the other elements being stored separately. It is indeed easy to introduce the ring-cap assembly into the tank body with its axis inclined relative to that of the tank body, the ring then being subjected to a pivoting of a fraction of a turn to align the two axes.

Un autre avantage est l'augmentation de capacité de la citerne pour des dimensions extérieures identiques on récupère en effet le volume pris par la carre dans le cas d'un fond à bord tombé. Another advantage is the increase in capacity of the tank for identical external dimensions, in fact the volume taken up by the edge is recovered in the case of a bottom with a fallen edge.

Un dernier avantage du fond assemblé selon l'invention est que la bague joue un rle de frette qui rigidifie le corps cylindrique de la citerne. A final advantage of the bottom assembled according to the invention is that the ring plays a hoop role which stiffens the cylindrical body of the tank.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée ci-dessous d'un exemple de l'invention, faite en référence aux dessins annexés, sur lesquels - la figure l est une vue en coupe d'une citerne compor
tant un fond assemblé selon 1'invention ; - la figure 2 est un détail de la figure l montrant plus
précisément les détails d'exécution de cet assemblage.
Other characteristics and advantages of the invention will appear on reading the detailed description below of an example of the invention, made with reference to the appended drawings, in which - FIG. 1 is a sectional view of a compor tank
both a bottom assembled according to the invention; - Figure 2 is a detail of Figure l showing more
precisely the details of execution of this assembly.

Sur les figures 1 et 2, la référence 10 désigne le corps cylindrique, horizontal, de la citerne. Ce corps cylindrique est fermé ou compartimenté au moyen d'un fond 20 en forme de calotte sphérique de rayon R, ce rayon étant très supérieur à -celui du corps cylindrique 10. Une bague 30 est ajustée à l'intérieur du corps cylindrique 10 : son diamètre extérieur est voisin de celui du diamètre du corps cylindrique, et son diamètre intérieur voisin de celui de la calotte 20. Cette dernière est soudée à la bague 30 au moyen de deux points de soudure 40, 41 en un emplacement tel que le prolongement de la fibre neutre 21 de la calotte arrive au voisinage du centre d'inertie 31 dé la bague. La bague, après introduction dans le corps cylindrique, est soudée à celui-ci par l'intermédiaire des soudures 42 et 43. In Figures 1 and 2, the reference 10 designates the cylindrical, horizontal body of the tank. This cylindrical body is closed or compartmentalized by means of a bottom 20 in the form of a spherical cap of radius R, this radius being much greater than that of the cylindrical body 10. A ring 30 is fitted inside the cylindrical body 10: its outer diameter is close to that of the diameter of the cylindrical body, and its inner diameter close to that of the cap 20. The latter is welded to the ring 30 by means of two welding points 40, 41 in a location such as the extension neutral fiber 21 of the cap arrives in the vicinity of the center of inertia 31 of the ring. The ring, after introduction into the cylindrical body, is welded to the latter by means of the welds 42 and 43.

Sur la figure l, on a représenté en trait interrompu l'emplacement occupé par un fond à bord tombé selon la technique antérieure : la référence 20a désigne la carre, et la référence 20b désigne le bord droit : on voit ainsi que le fond selon l'invention permet de récupérer un volume 50 précédemment perdu à cause de la carre 20a.  In FIG. 1, the space occupied by a bottom with a fallen edge according to the prior art has been shown in broken lines: the reference 20a designates the edge, and the reference 20b designates the straight edge: it is thus seen that the bottom according to l The invention makes it possible to recover a volume 50 previously lost because of the edge 20a.

Claims (7)

REVENDICATIONS 1. Procédé d'assemblage d'un fond de citerne pour conteneur, caractérisé en ce qu'il consiste à - former une tôle plane en une calotte (20) sphérique, - souder la périphérie de cette calotte sur la face 1. A method of assembling a tank bottom for a container, characterized in that it consists in - forming a flat sheet in a spherical cap (20), - welding the periphery of this cap on the face intérieure d'une bague (30) dont le diamètre intérieur inside of a ring (30) whose inside diameter est sensiblement égal au diamètre extérieur de la is substantially equal to the outside diameter of the calotte et dont le diamètre extérieur est sensiblement cap and whose outer diameter is substantially égal au diamètre intérieur du corps cylindrique (10) equal to the inside diameter of the cylindrical body (10) de la citerne, - introduire la bague pourvue de la calotte à l'intérieur of the tank, - insert the ring provided with the cap inside du corps de citerne, - souder la bague au corps de citerne. of the tank body, - weld the ring to the tank body. 2. Procédé selon la revendication 1, caractérisé en ce que la calotte sphérique est soudée à la bague en un emplacement tel que, en section radiale, le prolongement de la fibre neutre (21) de la calotte passe au voisinage du centre d'inertie (31) de la bague. 2. Method according to claim 1, characterized in that the spherical cap is welded to the ring in a location such that, in radial section, the extension of the neutral fiber (21) of the cap passes in the vicinity of the center of inertia (31) of the ring. 3. Procédé selon l'une des revendications 1 et 2, caractérisé en ce que la bague est cylindrique et obtenue par cintrage d'un fer plat. 3. Method according to one of claims 1 and 2, characterized in that the ring is cylindrical and obtained by bending a flat iron. 4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la bague est introduite dans le corps de citerne avec son axe incliné par rapport à celui du corps de citerne, la bague étant ensuite soumise à un pivotement d'une fraction de tour pour aligner les deux axes. 4. Method according to one of claims 1 to 3, characterized in that the ring is introduced into the tank body with its axis inclined relative to that of the tank body, the ring then being subjected to a pivoting of a fraction of a turn to align the two axes. 5. Citerne, caractérisée en ce qu'elle comporte au moins un fond assemblé par le procédé selon l'une des revendications 1 à 4. 5. Cistern, characterized in that it comprises at least one bottom assembled by the method according to one of claims 1 to 4. 6. Citerne selon la revendication 5, caractérisée en ce que le fond forme une surface d'extrémité de la citerne. 6. Tank according to claim 5, characterized in that the bottom forms an end surface of the tank. 7. Citerne selon l'une des revendications 5 et 6, caractérisée en ce que le fond forme une paroi de cloisonnement intérieur de la citerne.  7. Tank according to one of claims 5 and 6, characterized in that the bottom forms a partition wall inside the tank.
FR8217045A 1982-10-12 1982-10-12 Assembly method for a tank base for a container, and tank thus obtained Granted FR2534225A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8217045A FR2534225A1 (en) 1982-10-12 1982-10-12 Assembly method for a tank base for a container, and tank thus obtained

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8217045A FR2534225A1 (en) 1982-10-12 1982-10-12 Assembly method for a tank base for a container, and tank thus obtained

Publications (2)

Publication Number Publication Date
FR2534225A1 true FR2534225A1 (en) 1984-04-13
FR2534225B1 FR2534225B1 (en) 1985-01-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR8217045A Granted FR2534225A1 (en) 1982-10-12 1982-10-12 Assembly method for a tank base for a container, and tank thus obtained

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FR (1) FR2534225A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0549921A1 (en) * 1991-12-30 1993-07-07 Westerwälder Eisenwerk Gerhard GmbH Tank with partition

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191511059A (en) * 1915-07-30 1916-03-02 Scottish Tube Company Ltd Improvements in Bottles for Compressed Gases.
FR1368087A (en) * 1963-09-06 1964-07-24 Underground shelter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191511059A (en) * 1915-07-30 1916-03-02 Scottish Tube Company Ltd Improvements in Bottles for Compressed Gases.
FR1368087A (en) * 1963-09-06 1964-07-24 Underground shelter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0549921A1 (en) * 1991-12-30 1993-07-07 Westerwälder Eisenwerk Gerhard GmbH Tank with partition
AU652875B2 (en) * 1991-12-30 1994-09-08 Westerwaelder Eisenwerk Gerhard Gmbh A tank having an intermediate wall
US5346092A (en) * 1991-12-30 1994-09-13 Westerwaelder Eisenwerk Gerhard Gmbh Tank having an intermediate wall

Also Published As

Publication number Publication date
FR2534225B1 (en) 1985-01-18

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