FR2630187A3 - Improved welding connection - Google Patents

Improved welding connection Download PDF

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Publication number
FR2630187A3
FR2630187A3 FR8805256A FR8805256A FR2630187A3 FR 2630187 A3 FR2630187 A3 FR 2630187A3 FR 8805256 A FR8805256 A FR 8805256A FR 8805256 A FR8805256 A FR 8805256A FR 2630187 A3 FR2630187 A3 FR 2630187A3
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France
Prior art keywords
collar
nut
welded
welding
connection
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
FR8805256A
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French (fr)
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FR2630187B3 (en
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Individual
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Priority to FR8805256A priority Critical patent/FR2630187B3/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F16L19/0218Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0206Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)

Abstract

The connection is noteworthy in that the collar 6 or smooth part to be welded has an identical length to the threaded piece 1, in that this collar has a long peripheral bearing surface 6.1 extending beyond the plane of the nut 2, of which the end 6.2 is butt welded to the pipe, the said bearing surface being extended by a double stepped shoulder 6.3-6.4 allowing the collar to be centred in the opening of the nut and to be positioned in abutment against the bottom of the nut whilst being in a plane of axial alignment coinciding with the axis of the connection to be welded.

Description

L'invention a pour objet un raccord à souder perfectionné. L'invention trouve une application particulière pour l'équipenient de tuyauteries pour il industrie de l'agroalimetaire. The invention relates to an improved weld fitting. The invention finds a particular application for the equipment of pipes for the agroalimetry industry.

Selon l'art antérieur1 on utilise des raccords commercialisés sous la dénomination "sus" illustré figures 1 et 2 des dessins comprenant une pièce filetée a souder < 1 > , un écrou cannelé (2), un joint de raccord (3) et un collet < 4 > ou pièce lisse a souder. Cette dernière pièce se présente avec une collerette C4.1) venant en butée contre le fond (1.1) de l'écrou ; en outre sa longueur (1) est très réduite ne débordant que de un ou deux millimétres du plan extérieur de l'écrou, ou restant dans le même plan. According to the prior art1, fittings sold under the name "sus" illustrated in FIGS. 1 and 2 of the drawings are used, comprising a threaded piece to be welded <1>, a fluted nut (2), a fitting joint (3) and a collar <4> or smooth piece to be welded. This last part is presented with a collar C4.1) abutting against the bottom (1.1) of the nut; furthermore, its length (1) is very small, extending only one or two millimeters from the outside plane of the nut, or remaining in the same plane.

Un raccord de cette conception présente plusieurs inconvénients. La longueur réduite du collet entraîne de grosses difficultés de soudage des tuyaux CT). Ceux-ci sont en effet soudés bout-à-bout au collet et il est extrêmement délicat d'effectuer une soudure correcte de par le très faible ou l'absence de débordement de l'extrémité du collet en égard au plan extérieur de l'écrou. Cette disposition actuelle exclut toute inter-vention de soudure automatique. A connector of this design has several drawbacks. The reduced length of the collar leads to great difficulties in welding the CT pipes). These are indeed welded end-to-end to the collar and it is extremely delicate to carry out a correct weld due to the very weak or the absence of overflow of the end of the collar in relation to the external plane of the nut. This current provision excludes any automatic welding intervention.

En ou#tre, lorsque l'opération de soudure est effectuée, de par la faible dimension et longueur du collet, celui-ci a tendance à se déformer, ce qui entraîne un voilage du collet et une mauvaise qualité de liaison. Un autre inconvénient réside dans le fait que le collet n'est pas tenu dans le fond de l'écrou. Il n'est pas centré par rapport a l'axe diamétral de l'écrou mais par rapport au filetage intérieur de l'écrou entraînant une excentration de position. In addition, when the welding operation is carried out, owing to the small size and length of the collar, the latter tends to deform, which causes the collar to be warped and poor connection quality. Another disadvantage lies in the fact that the collar is not held in the bottom of the nut. It is not centered in relation to the diametrical axis of the nut but in relation to the internal thread of the nut, causing an offset in the position.

En autre, le collet n'est pas de meme longueur que la pièce filetée, de sorte qu'il n'y a pas d'interchangeabilité possible. Figure 3, on a montré a partir d'un coude < 5? asymètrique, l'adaptation de raccords à souder avec les lignes < Li L2) de soudure et les distances A et B respectives desdites lignes avec les extrémités de la pièce filetée (1 > à souder et du collet (4 > . L'asymétrie du coude est gênante au plan de la standardisation de production.In addition, the collar is not the same length as the threaded part, so that there is no possible interchangeability. Figure 3, we showed from an elbow <5? asymmetrical, the adaptation of welding fittings with the welding lines <Li L2) and the respective distances A and B of the said lines with the ends of the threaded piece (1> to be welded and the collar (4>). elbow is troublesome in terms of production standardization.

Le but recherché selon l'invention était de remédier å ces inconvénients. La solution proposée consiste dans un aménagement nouveau du, raccord à souder, de fabrication simple et de grande fiabilité d'utilisation. The aim sought after according to the invention was to remedy these drawbacks. The proposed solution consists in a new arrangement of the weld fitting, simple to manufacture and highly reliable in use.

Selon une première caractéristique, le raccord est remarquable en ce que le collet ou pièce lisse a souder est de longueur identique a la pièce filetée, en ce que ce collet présente à partir d'une portée périphérique de grande longueur débordante du plan de l'écrou, dont l'extrémité est soudée bout-à-bout du tuyau, ladite portée se prolongeant par un double épaulement étagé autorisant le centrage du collet dans l'ouverture de l'écrou et son positionnement en- butée contre le fond de l'écrou en étant dans un plan d'alignement axial coincidant avec l'axe du raccord à souder. According to a first characteristic, the connector is remarkable in that the collar or smooth piece to be welded is of identical length to the threaded part, in that this collar has from a peripheral surface of great length projecting from the plane of the nut, the end of which is welded end-to-end of the pipe, said bearing extending by a double stepped shoulder allowing the centering of the collar in the opening of the nut and its positioning abutting against the bottom of the nut while being in an axial alignment plane coinciding with the axis of the fitting to be welded.

Ces caractéristiques et d'autres entre ressortiront bien de la suite de la description. These characteristics and others between will emerge clearly from the rest of the description.

Pour fixer l'objet de l'invention illustrée d'une manière non limitative aux figures des dessins
La figure 1 est une vue en coupe longitudinale d'un raccord à souder selon l'art antérieur.
To fix the subject of the invention illustrated in a nonlimiting manner in the figures of the drawings
Figure 1 is a longitudinal sectional view of a weld fitting according to the prior art.

La figure 2 est une vue du collet seul selon la figure 1. FIG. 2 is a view of the collar alone according to FIG. 1.

La figure 3 est une vue illustrant l'adaptation de raccords å souder selon la figure 1 sur un coude de tuyauterie. Figure 3 is a view illustrating the adaptation of fittings to be welded according to Figure 1 on a pipe bend.

La figure 4 est une vue en perspective éclatée avant montage du raccord à souder selon l'invention. Figure 4 is an exploded perspective view before mounting of the weld fitting according to the invention.

La figure 5 est une vue en coupe longitudinale du raccord selon la figure 4 en position montée. Figure 5 is a longitudinal sectional view of the connector according to Figure 4 in the assembled position.

La figure 6 est une vue du collet seul selon l'invention. Figure 6 is a view of the collar alone according to the invention.

La figure 7 est une vue illustrant l'adaptation de raccords a souder selon la figure 4 sur un coude de tuyauterie.  Figure 7 is a view illustrating the adaptation of fittings to be welded according to Figure 4 on a pipe bend.

Afin de rendre plus concret l'objet de l'invention,
on le décrit maintenant d'une manière non limitative en se référant aux exemples de réalisation des figures des dessins.
In order to make the object of the invention more concrete,
it is now described in a nonlimiting manner with reference to the embodiments of the figures of the drawings.

Le raccord à souder perfectionné comprend de manière
identique a l'art antérieur, la pièce filetée a souder < 1),
l'écrou cannelé (2) et un joint de raccord (3).
The improved weld fitting includes
identical to the prior art, the threaded part to be welded <1),
the grooved nut (2) and a connector gasket (3).

Selon l'invention, le collet (6) ou pièce lisse à
souder est tout d'abord de longueur identique à la pièce
filetée < 1 > , ce qui permet d'obtenir un montage symétrique lors de la soudure d'une de ces deux pièces, soit la pièce filetée
(1 > , soit la pièce lisse à souder. Ce collet présente à partir
d'une portée périphérique (6.1) de grande longueur et
débordante largement du plan de l'écrou, et- dont l'extrémité
(6.2) est soudée bout-a-bout au tuyau < T), un double épaulement
(6.3 - 6.4) étagé, avec un congé de raccordement (6.5 > entre la
portée (6.1) et le premier épaulement < 6.3 > ,#et une face droite
< 6.6) entre les deux épaulements.De par cette réalisation, ce
collet (6) est tout d'abord centré parfàitement par son
épaulement < 6.3) eu égard a l'ouverture de l'écrou et en butée
dans le fond dudit écrou, de sorte que l'axe du collet coincide
exactement avec l'axe du raccord à souder. De par sa plus
grande longueur et en particulier sa portée (6.1), l'épaisseur
du métal, ce collet n'est plus déformé et donc voilé lors de
l'opération dessoudure à une température de l'ordre de 1000in
On obtient ainsi une surface de référence parfaite. En outre,
par le dégagement important de la portée (6.1), l'opération de
soudure peut être effectuée par soudure automatique.
According to the invention, the collar (6) or smooth part with
weld is the same length as the workpiece first
threaded <1>, which makes it possible to obtain a symmetrical mounting when welding one of these two parts, namely the threaded part
(1>, or the smooth piece to be welded. This collar presents from
a very long peripheral span (6.1) and
extending well beyond the plane of the nut, and- the end of which
(6.2) is butt welded to pipe <T), a double shoulder
(6.3 - 6.4) storied, with a connecting leave (6.5> between the
reach (6.1) and the first shoulder <6.3>, # and a straight face
<6.6) between the two shoulders.
collar (6) is first of all perfectly centered by its
shoulder <6.3) having regard to the opening of the nut and in abutment
in the bottom of said nut, so that the axis of the collar coincides
exactly with the axis of the fitting to be welded. By its more
great length and in particular its range (6.1), the thickness
metal, this collar is no longer deformed and therefore veiled during
the desoldering operation at a temperature of the order of 1000in
This gives a perfect reference surface. In addition,
by the significant clearance of the span (6.1), the operation of
welding can be done by automatic welding.

Un autre avantage réside dans le fait que la pièce
lisse à souder et la pièce filetée à souder sont de mêmes
dimensions A' égale à B', de sorte que les coudes de
raccordement peuvent être symétriques.
Another advantage is that the room
smooth to weld and the threaded part to be welded are the same
dimensions A 'equal to B', so that the elbows of
connection can be symmetrical.

L'invention ainsi réalisée offre un grand intérêt en
pratique, facilité pour le montage des raccords à souder et
leur soudage sur les tuyaux. Les raccords précités trouvent une
application particulièrement avantageuse pour l'équipement de
tuyauteries dans l'industrie agroallmentaire.
The invention thus produced is of great interest in
practical, easy to assemble the welding fittings and
their welding on the pipes. The aforementioned fittings find a
particularly advantageous application for the equipment of
piping in the food industry.

Claims (4)

REVENDICATIONS -1- Raccord sur des tuyauteries (T) du type comprenant une pièce filetée à souder (1), un écrou cannelé (2), un joint de raccord (3D, un collet (4), la soudure des tuyaux s'effectuant bout-à-bout contre au moins la face en regard dudit collet, ledit raccord étant caractérisé en ce que le collet < 6) ou pièce lisse à souder est de longueur identique à la pièce filetée < 1), en ce que ce collet présente à partir d'une portée périphérique (6.1) de grande longueur débordante du plan de l'écrou (2), dont l'extrémité (6.2) est soudée bout-à-bout du tuyau, ladite portée se prolongeant par un double épaulement étage (6.3 - 6.4) autorisant a le centrage du collet dans l'ouverture de l'écrou et son positionnement en butée contre le fond de l'écrou en étant dans un plan d'alignement axial coincidant avec l'axe du raccord å souder.-1- Connection on pipes (T) of the type comprising a threaded piece to be welded (1), a grooved nut (2), a connection joint (3D, a collar (4), the welding of the pipes being carried out -to butt against at least the opposite face of said collar, said connector being characterized in that the collar <6) or smooth piece to be welded is of identical length to the threaded part <1), in that this collar has from a peripheral span (6.1) of great length projecting from the plane of the nut (2), the end (6.2) of which is welded end-to-end of the pipe, said span being extended by a double stage shoulder ( 6.3 - 6.4) authorizing the centering of the collar in the opening of the nut and its positioning in abutment against the bottom of the nut while being in an axial alignment plane coinciding with the axis of the fitting to be welded. -2- Raccord à souder selon la revendication , caractérisé en ce qu'un congé de raccordement (6.5) est établi entre la portée (6.1) et le premier épaulement (6.3), et en ce qu'une face droite joint les épaulement entre eux.-2- Welding connection according to claim, characterized in that a connection leave (6.5) is established between the bearing surface (6.1) and the first shoulder (6.3), and in that a straight face joins the shoulders between them. -3- Raccord à souder selon la revendication 1, caractérisé dans son adaptation sur des conduits de tuyaux, tels que coudes de manière symétrique.-3- Welding connection according to claim 1, characterized in its adaptation to pipe conduits, such as elbows symmetrically. -4- Raccord à souder selon l'une quelconque des revendications, dans son application aux tuyauteries pour l'industrie agroalimentaire. -4- Welding connection according to any one of claims, in its application to piping for the food industry.
FR8805256A 1988-04-13 1988-04-13 IMPROVED WELDING FITTING Expired - Lifetime FR2630187B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8805256A FR2630187B3 (en) 1988-04-13 1988-04-13 IMPROVED WELDING FITTING

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8805256A FR2630187B3 (en) 1988-04-13 1988-04-13 IMPROVED WELDING FITTING

Publications (2)

Publication Number Publication Date
FR2630187A3 true FR2630187A3 (en) 1989-10-20
FR2630187B3 FR2630187B3 (en) 1990-04-13

Family

ID=9365509

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8805256A Expired - Lifetime FR2630187B3 (en) 1988-04-13 1988-04-13 IMPROVED WELDING FITTING

Country Status (1)

Country Link
FR (1) FR2630187B3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654796A1 (en) * 1989-11-20 1991-05-24 Mpi Creation Connector, and particularly a connector to be welded or expanded by rolling
EP1832794A1 (en) * 2006-03-11 2007-09-12 Karl Hamacher GmbH Pipe coupling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654796A1 (en) * 1989-11-20 1991-05-24 Mpi Creation Connector, and particularly a connector to be welded or expanded by rolling
EP1832794A1 (en) * 2006-03-11 2007-09-12 Karl Hamacher GmbH Pipe coupling

Also Published As

Publication number Publication date
FR2630187B3 (en) 1990-04-13

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