FR2627239A2 - Method of applying protective coat to internal surface of tube - Google Patents
Method of applying protective coat to internal surface of tube Download PDFInfo
- Publication number
- FR2627239A2 FR2627239A2 FR8801796A FR8801796A FR2627239A2 FR 2627239 A2 FR2627239 A2 FR 2627239A2 FR 8801796 A FR8801796 A FR 8801796A FR 8801796 A FR8801796 A FR 8801796A FR 2627239 A2 FR2627239 A2 FR 2627239A2
- Authority
- FR
- France
- Prior art keywords
- tube
- foot
- yoke
- edges
- arms
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
- E04B1/5837—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially circular form
- E04B1/585—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially circular form with separate connection devices
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Coating With Molten Metal (AREA)
Abstract
Description
L'invention concerne une chape adaptable a des tubes de différents diamètres et épaisseurs, présentant deux bras solidaires d'un pied tronconique, prévu pour être fixé a l'extrémité d'un tube. La chape est formée éventuellement de deux éléments identiques, comprenant chacun un bras et une moitié de pied, formant un demitronc de cone, assemblés selon au moins un bord. The invention relates to a yoke adaptable to tubes of different diameters and thicknesses, having two arms integral with a frustoconical foot, intended to be fixed to the end of a tube. The yoke is optionally formed of two identical elements, each comprising an arm and a half of a foot, forming a half-cone, assembled according to at least one edge.
Le brevet principal concernait une chape, adaptable a des tubes de diamètres différents, monobloc ou obtenue à partir de deux éléments que l'on assemblait selon leurs bords par un cordon de soudure continu. Après soudure des chapes sur les extrémités du tube, l'ensemble est pratiquement étanche et à l'abri de' la corrosion interne. The main patent concerned a yoke, adaptable to tubes of different diameters, in one piece or obtained from two elements which were assembled along their edges by a continuous weld bead. After welding of the yokes on the ends of the tube, the assembly is practically sealed and protected from internal corrosion.
Malheureusement, la soudure complète des bords de la chape necessite deux opérations : une de pointage pour le maintien en place des éléments et une de soudure à proprement parler. Ces opérations prennent un temps non négligeable, aussi, généralement s'arrête-t-on à la première opération. Cette manière de faire n'entratne aucun inconvénient en ce qui concerne la transmission des efforts puisque la périphérie du piéd est soudée au bord du tube sans discontinuité. Dans la plupart des cas d'utilisation normale de ces ensembles, le traitement de surface auquel ils sont soumis et en particulier la peinture produit une étanchéification presque parfaite des fissures restant entre les éléments. Unfortunately, the complete welding of the edges of the screed requires two operations: a pointing to hold the elements in place and a welding proper. These operations take a considerable time, therefore, generally we stop at the first operation. This procedure does not cause any drawback with regard to the transmission of forces since the periphery of the base is welded to the edge of the tube without discontinuity. In most cases of normal use of these assemblies, the surface treatment to which they are subjected and in particular the paint produces an almost perfect sealing of the cracks remaining between the elements.
Par contre, dans le cas ou les ensembles sont utilisés dans des conditions climatiques particulièrement sévères, telles qu'en milieu marin, ou en milieu corrosif, il est nécessaire de leur appliquer un traitement de protection comportant par exemple le dépôt de couches métalliques tel par exemple que la galvanisation. La températu ré de bain métallique dans lequel ils sont plongés étant relativement élevée, il faut prévoir des évents afin d'assurer l bquilibrage de la pression dans le tube avec l'atmosphère. Ces évents sont constitués, dans le cas des chapes formées par deux éléments assemblés, par les parties non soudées du pied. On the other hand, in the case where the assemblies are used in particularly severe climatic conditions, such as in a marine environment, or in a corrosive environment, it is necessary to apply a protective treatment comprising for example the deposition of metallic layers such as example as galvanizing. The temperature of the metal bath in which they are immersed being relatively high, it is necessary to provide vents in order to ensure the balancing of the pressure in the tube with the atmosphere. These vents are formed, in the case of yokes formed by two assembled elements, by the non-welded parts of the foot.
Les évents généralement prévus, permettent la circulation de l'air ambiant et par conséquent la corrosion de l'intérieur des ensembles, sans être toutefois suffisamment importants pour permettre le libre passage du bain dans le tube, ni laisser s'écouler le bain qui a pu s'introduire et qui est retenu entre le pied tronconique et la paroi du tube, lors de l'égouttage. The vents generally provided, allow the circulation of the ambient air and consequently the corrosion of the interior of the assemblies, without however being sufficiently important to allow the free passage of the bath in the tube, nor to let the bath flow which has could be introduced and which is retained between the frustoconical foot and the wall of the tube, during the draining.
L'invention a pour but de permettre le dépôt d'une couche pratiquement uniforme d'un produit ou d'un métal de protection liquides sur les parois internes d'un ensemble formé par les chapes soudées au tube, en modifiant les chapes objet de la demande principale. The object of the invention is to allow the deposition of a practically uniform layer of a liquid protective product or metal on the internal walls of an assembly formed by the yokes welded to the tube, by modifying the yokes object of the main request.
La chape, selon l'invention, est remarquable en ce qu'elle comporte au moins entre les deux bras une ouverture communiquant avec l'intérieur creux du pied et en ce que la partie tronconique du pied penetrant dans le tube présente au moins une ouverture traversant ladite partie tronconique. The yoke according to the invention is remarkable in that it comprises at least between the two arms an opening communicating with the hollow interior of the foot and in that the frustoconical part of the foot penetrating into the tube has at least one opening crossing said frustoconical part.
Les explications et figures données ci-après à titre d'exemple permettront de comprendre comment l'invention peut être réalisée. The explanations and figures given below by way of example will make it possible to understand how the invention can be implemented.
La figure 1 est une vue en coupe par le plan de symétrie perpendiculaire aux bras d'une chape selon une forme de réalisation de l'invention. Figure 1 is a sectional view through the plane of symmetry perpendicular to the arms of a yoke according to an embodiment of the invention.
La figure 2 est une vue selon II de la figure 1. FIG. 2 is a view along II of FIG. 1.
La figure 3 est une vue de dessus d'un élément de chape selon la figure 1. FIG. 3 is a top view of a yoke element according to FIG. 1.
La figure 4 est une vue en coupe selon IV-IV de la figure 3. FIG. 4 is a sectional view along IV-IV of FIG. 3.
La figure 5 est une vue en coupe par le plan de symétrie perpendiculaire aux bras d'une chape selon une autre forme de réalisation de l'invention. Figure 5 is a sectional view through the plane of symmetry perpendicular to the arms of a yoke according to another embodiment of the invention.
La figure 6 est une vue selon VI de la figure 5. FIG. 6 is a view along VI of FIG. 5.
La figue 7 est une vue de dessus d'un élément de chape selon la figure 5. Fig 7 is a top view of a yoke element according to Figure 5.
La figure 8 est une vue en coupe selon VII-VII de la figure 7. FIG. 8 is a sectional view along VII-VII of FIG. 7.
Selon l'exempie de réalisation représenté figures l à 4, la cnape, montée à l'extrémité d une barre tubulaire T, comporte deux bras 1, 2 dans lesquels seront ou sont percés des trous coaxiaux 3, 4 destinés à recevoir des boulons de fixation à une ailette d'un noeud d'assemblage. According to the exemplary embodiment shown in Figures 1 to 4, the valve, mounted at the end of a tubular bar T, comprises two arms 1, 2 in which will be or are drilled coaxial holes 3, 4 intended to receive bolts of attachment to a fin of an assembly knot.
Les bras 1, 2 sont solidaires d'un pied 7 qui pre- sente une forme tronconique. La grande base du tronc de cône porte les bras l et 2 qui sont dans des plans parallèles entre eux et parallèles à l'axe du tronc de cône La surface latérale tronconique du pied est susceptible de s'appliquer contre les bords de l'extrémité de tubes T formant, par exemple, les barres d'une structure en treillis. The arms 1, 2 are integral with a foot 7 which has a frustoconical shape. The large base of the truncated cone carries the arms l and 2 which are in planes parallel to each other and parallel to the axis of the truncated cone The frustoconical lateral surface of the foot is capable of being applied against the edges of the end T tubes forming, for example, the bars of a lattice structure.
Le pied porte à sa surface intérieure et selon au moins deux aéneratrices,-des nervures 8 de renforcemerlt. The foot carries on its inner surface and according to at least two air vents, ribs 8 to reinforce.
.11 est prévu, comrr.e connu ta brevet principal, des saillies 9 qui sont de préférence disposées selon les memes génératrices que les nervures intérieures 8. .11 is provided, comrr.e known your main patent, projections 9 which are preferably arranged according to the same generators as the inner ribs 8.
Selon l'invention, il est prévu entre les deux bras 1, 2, une ouverture centrale 10 et sur le pied tronconique 7, au moins une ouverture latérale ll dont le ro- le, aisément compréhensible, est de mettre en communication le volume intérieur du tube T et du pied 7 avec l'extérieur, ainsi que le volume V compris entre la paroi latérale conique du pied et le tube T. According to the invention, there is provided between the two arms 1, 2, a central opening 10 and on the frusto-conical foot 7, at least one lateral opening ll whose role, easily understandable, is to bring the interior volume into communication of the tube T and of the foot 7 with the outside, as well as the volume V comprised between the conical side wall of the foot and the tube T.
Lors de l'égouttage, apres passage dans le bain de protection, l'ensemble, formé du tube fermé ses extrémités par les chapes, est suspendu verticalement et les ouvertures latérales ll permettent l'évacuation du bain qui sans cela resterait emprisonné dans le volume V. During draining, after passing through the protective bath, the assembly, formed of the tube closed at its ends by the yokes, is suspended vertically and the lateral openings ll allow the evacuation of the bath which otherwise would remain trapped in the volume V.
Lorsque la chape est réalisée sous forme d'une piece monobloc, les ouvertures 10 et Il sont obtenues par poinçonnage, perçage, etc. ou par des noyaux prévus dans les moules. When the screed is produced in the form of a single piece, the openings 10 and 11 are obtained by punching, drilling, etc. or by cores provided in the molds.
Lorsque la chape est réalisée, comme montré dans les figures 1 8 4, 4r & partir de deux éléments, les ouvertu- res sont formées, lors de la fabrication desdits éléments, par forgeage-estampage, ou par des noyaux prévus dans les moules d'injection. When the screed is made, as shown in Figures 1 8 4, 4r from two elements, the openings are formed, during the manufacture of said elements, by forging-stamping, or by cores provided in the molds of 'injection.
Dans le cas de la chape formée de deux éléments, au moins un des bords 12A, 12B, qui est dans un plan sensiblement parallèle aux plans des bras, présente dans sa partie médiane, une encoche médiane 10, au moins un des bords 13A ou 13B des demi-pieds tronconiques comporte également une encoche latérale 11. In the case of the yoke formed of two elements, at least one of the edges 12A, 12B, which is in a plane substantially parallel to the planes of the arms, has in its median part, a median notch 10, at least one of the edges 13A or 13B of the tapered half-feet also has a lateral notch 11.
Les parties de bords 12A, 12B qui sont en contact sont solidarisées par tout procédé connu tel que par exemple : soudure, brasure, collage etc... The edge parts 12A, 12B which are in contact are joined by any known method such as for example: welding, soldering, bonding, etc.
Selon une forme de réalisation de l'encoche, plus particulièrement adaptée aux éléments de chape formés par estampage ou moulage par injection, les bords de l'ouverture médiane 10 forment, avec la paroi intérieure du pied et la face interne des bras, une surface courbe continue 14. According to one embodiment of the notch, more particularly adapted to the yoke elements formed by stamping or injection molding, the edges of the central opening 10 form, with the inner wall of the foot and the inner face of the arms, a surface continuous curve 14.
Cette forme d'ouverture permet l'écoulement du bain de protection sans risque de rétention. This form of opening allows the flow of the protective bath without risk of retention.
L'exemple de réalisation montré figures 5 a 8 est en tout point semblable & celui de l'exemple précédent sauf en ce qui concerne les nervures intérieures 15 des éléments. Ces nervures présentent sur au moins une partie de leur longueur un bord 16 s'étendant selon l'axe de la chape et par lequel seront maintenus assemblés les éléments 1 et 2. The exemplary embodiment shown in FIGS. 5 to 8 is in all respects similar to that of the preceding example except as regards the internal ribs 15 of the elements. These ribs have, over at least part of their length, an edge 16 extending along the axis of the yoke and by which the elements 1 and 2 will be kept assembled.
La formation des ouvertures médiane et latérale permet en particulier la protection par bain métallique des surfaces internes de l'ensemble tube-chapes après que celui-ci soit monté et évite ainsi, comme c'était le cas lorsque les pièces devaient être protégées avant montage, la formation de zones de corrosion difficilement protégeables, même après reprise. The formation of the median and lateral openings allows in particular the protection by metal bath of the internal surfaces of the tube-screed assembly after it is mounted and thus avoids, as was the case when the parts had to be protected before assembly , the formation of corrosion zones that are difficult to protect, even after recovery.
Claims (7)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8801796A FR2627239B2 (en) | 1987-03-20 | 1988-02-16 | SCREED ADAPTABLE TO TUBES OF DIFFERENT DIAMETERS AND THICKNESSES |
PCT/FR1989/000058 WO1989007692A1 (en) | 1988-02-16 | 1989-02-16 | End-cap for fitting to tubes of different diameters and thicknesses |
DE1989604297 DE68904297T2 (en) | 1988-02-16 | 1989-02-16 | CAP TO BE ADAPTED TO TUBES OF DIFFERENT DIAMETERS AND THICKNESS. |
EP19890902790 EP0371091B1 (en) | 1988-02-16 | 1989-02-16 | End-cap for fitting to tubes of different diameters and thicknesses |
AT89902790T ATE84340T1 (en) | 1988-02-16 | 1989-02-16 | CAP FOR ATTACHING TO PIPES OF DIFFERENT DIAMETER AND THICKNESS. |
JP50258389A JPH02503210A (en) | 1988-02-16 | 1989-02-16 | Caps suitable for pipes of various diameters and wall thicknesses |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8703887A FR2612576B1 (en) | 1987-03-20 | 1987-03-20 | SCREED ADAPTABLE TO TUBES OF DIFFERENT DIAMETERS AND THICKNESSES |
FR8801796A FR2627239B2 (en) | 1987-03-20 | 1988-02-16 | SCREED ADAPTABLE TO TUBES OF DIFFERENT DIAMETERS AND THICKNESSES |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2627239A2 true FR2627239A2 (en) | 1989-08-18 |
FR2627239B2 FR2627239B2 (en) | 1990-08-03 |
Family
ID=26225859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8801796A Expired - Lifetime FR2627239B2 (en) | 1987-03-20 | 1988-02-16 | SCREED ADAPTABLE TO TUBES OF DIFFERENT DIAMETERS AND THICKNESSES |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2627239B2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB761879A (en) * | 1953-11-20 | 1956-11-21 | Painter Brothers Ltd | Improvements relating to end connections for galvanised structural tubes and similarelements |
DE8615525U1 (en) * | 1986-06-09 | 1986-07-24 | Förster, Fritz, Ing.(grad.), 8200 Rosenheim | Tube-node connection |
-
1988
- 1988-02-16 FR FR8801796A patent/FR2627239B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB761879A (en) * | 1953-11-20 | 1956-11-21 | Painter Brothers Ltd | Improvements relating to end connections for galvanised structural tubes and similarelements |
DE8615525U1 (en) * | 1986-06-09 | 1986-07-24 | Förster, Fritz, Ing.(grad.), 8200 Rosenheim | Tube-node connection |
Also Published As
Publication number | Publication date |
---|---|
FR2627239B2 (en) | 1990-08-03 |
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