WO2008007396A1 - Connexion pour tuyaux - Google Patents

Connexion pour tuyaux Download PDF

Info

Publication number
WO2008007396A1
WO2008007396A1 PCT/IT2006/000526 IT2006000526W WO2008007396A1 WO 2008007396 A1 WO2008007396 A1 WO 2008007396A1 IT 2006000526 W IT2006000526 W IT 2006000526W WO 2008007396 A1 WO2008007396 A1 WO 2008007396A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat
connection device
adapter
connection
annular groove
Prior art date
Application number
PCT/IT2006/000526
Other languages
English (en)
Inventor
Fausto Ungari
Original Assignee
Fra.Bo S.P.A.
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 Fra.Bo S.P.A. filed Critical Fra.Bo S.P.A.
Priority to PCT/IT2006/000526 priority Critical patent/WO2008007396A1/fr
Publication of WO2008007396A1 publication Critical patent/WO2008007396A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
    • F16L13/141—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside
    • F16L13/142—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside with a sealing element inserted into the female part before crimping or rolling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
    • F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
    • F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
    • F16L33/2071—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member
    • F16L33/2073—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member

Definitions

  • Object of the present invention is a connection for connecting components in fluid conveyance systems, in particular a connection for connecting pipes, for example in drinking water distribution facilities or in heating facilities .
  • the first pipe type is the so-called multilayer pipe, which consists of several alternating and concentric tubular layers of polyethylene and aluminium.
  • the second pipe type has only a first inner layer of copper, inside of which the fluid flows, and a second cover layer in polyethylene.
  • a first drawback is represented by the reduction of the diameter of the passage opening of the pipe due to the insertion of the opposing element. Such diameter reduction of the conduit causes turbulence in the flow and consequently head losses, to the detriment of the overall efficiency of the entire facility.
  • a further drawback of the connections according to the prior art consist of the fact that the opposing element, being hit by the fluid flow, can also be subject to a high static and 4 above all dynamic pressure, and therefore risks escaping from the inside of the pipe.
  • the opposing element creates recesses inside the conduit, an invitation for impurities and bacteria, unacceptable for example in the food and hospital sectors .
  • Object of the present invention is therefore that of making available a connection device which has characteristics such to overcome the drawbacks mentioned with reference to the prior art.
  • object of the present invention is that of making available a connection device which makes it possible to safely connect components of a conveyance system of fluids, in particular liquids, without intervening on the inner passage of the components themselves, for example pipes or valves.
  • a further object of the invention is that of proposing a connection device which minimises the turbulences and overall head losses in the fluid conveyance system.
  • connection device for joining a tubular portion of a first component in fluid connection with a second component in a fluid conveyance system, wherein such connection device comprises:
  • connection portion defines a seat for receiving the tubular portion and is radially pressable so to engage said tubular portion by interference, and wherein this seat comprises at least one projection which radially juts inward and which is arranged and shaped so to at least partially penetrate into an outer layer of the tubular portion, following such radial pressing of the connection portion.
  • an adapter insert adapted to be inserted in an outer portion of a radially pressable connection portion of a connection device so to join a tubular portion of a first component in fluid connection with a second component in a fluid conveyance system
  • such adapter insert is substantially tubular, defines a seat for receiving the tubular portion and is radially pressable so to engage said tubular portion by- interference
  • said seat comprises at least one projection which radially juts inward and which is arranged and shaped so to at least partially penetrate into an outer layer of the tubular portion following such radial pressing.
  • Figure 1 is a side, sectional view of an assembled connection device according to a first embodiment of the invention
  • Figure 2 is a side, sectional view of an assembled connection device according to a further embodiment of the invention.
  • Figure 3 is a perspective, sectional view of an assembled connection device according to a further embodiment of the invention.
  • Figure 4 is a perspective, sectional, exploded view of the connection device of figure 3;
  • Figure 5 is a perspective view of a detail of the connection device of figure 3 ;
  • Figure 6 is a side, sectional view of a further detail of the connection device of figure 3;
  • Figure 7 is a perspective, sectional view of the detail of figure 6;
  • Figure 8 is a side, sectional view of the detail of the connection device of figure 6 according to a further embodiment of the invention.
  • Figure 9 is a perspective, sectional view of the detail of figure 8.
  • connection device is indicated in its entirety with the reference number 1.
  • Such connection device 1 is adapted to connect at least one tubular portion 2 of a component of a fluid conveyance system with an additional component of such system.
  • Such components to be connected can be pipes, for example, eventually of different sizes, or pumps, valves, heat exchangers, tanks or the like.
  • connection device 1 comprises a main body 3 which defines a passage opening 33 at its interior.
  • main body 3 is adapted, depending on its conformation, to deviate and/or divide the flow of fluid between the components of the conveyance system interconnected by means of the connection device 1.
  • the main body 3 can be rectilinear, U-shaped, T-shaped or elbow- shaped.
  • the connection device 1 moreover comprises at least one connection portion 5, substantially tubular and in fluid communication with the passage space 33 of the main body 3.
  • connection portion 5 comprises a radially inner surface 6 which defines a seat 7 adapted to receive the tubular portion 2 of the component to be connected.
  • the seat 7 is radially pressable, so to be able to engage by interference the tubular portion 2 received in it.
  • the seat 7 comprises at least one projection 9 which radially juts inward and which is shaped so that when the tubular portion 2 is inserted in the seat 7, by applying a radial pressing action the projecting element 9 at least partially radially penetrates into an outer layer 8 of the tubular portion 2 , tightly constraining it with the respect to the connection portion 5.
  • the seat 7 of the connection portion 5 comprises two projections 9, preferably arranged in proximity to the two opposite ends, so to ensure a substantially symmetrical hold on the tubular portion 2 within the seat 7.
  • such projections 9 are annular, so to engage the outer layer 8 of the tubular portion 2 along an entire perimeter.
  • the projections 9 have in section a V-pointed form, tilted in the insertion direction of the tubular portion 2 inside the seat 7.
  • the pointed vertex of the V ensures that the projections 9 can easily penetrate into the outer layer 8 of the tubular portion 2, usually, as said, in polyethylene.
  • the tilting of the V moreover, ensures a favoured sliding direction of the tubular portion 2, which can be easily inserted in the seat 7 in assembly phase, but which is not free to slide in the opposite direction once the pressing has occurred.
  • the seat 7 comprises an annular groove 12 adapted to receive an inner seal 13.
  • annular groove 12 has in section a substantially semicircular form and can receive a seal 13 of 0-ring type with substantially circular section.
  • annular groove 12 has a substantially symmetrical, elongated form, wherein two curved ends are connected with each other by a substantially rectilinear segment (figures 8 and 9) .
  • a seal 13 can be advantageously received of 0-ring type with substantially °° section (i.e. shaped like the °° symbol) .
  • the two portions of such °° section have different diameters, such that when the 0-ring is inserted in the annular groove 12, which has in section a substantially symmetrical shape, the greater diameter portion projects radially inward for a greater amount with respect to the smaller diameter portion.
  • the °° O-ring is positioned in the annular groove 12 such that its smaller diameter portion is turned towards an outer end 31 of the connection portion 5, at which the tubular portion 2 is inserted in the seat 7.
  • the seat 7 comprises two second inner grooves 14, preferable having in section a substantially triangular or upside-down V form.
  • Such second grooves 14 have the function of receiving the material of the outer layer 8 of the tubular portion 2, which is moved during the pressing when the projections 9 penetrate into it, and ensure in this manner a form coupling between the tubular portion 2 and the connection portion 5.
  • the seat 7 of the connection portion 5 advantageously comprises a stroke-end stop 15 for the tubular portion 2, such that, during the assembly operation, the latter is inserted inside the seat 7 until it is in abutment against such stroke-end stop 15, in a position adapted for the pressing action (figure 3) .
  • such stroke-end stop 15 is an annular shoulder of substantially rectangular section which radially juts inward.
  • connection portion 5 comprises an external tubular portion 17 having an outer surface 34 which is intended to be engaged by a pressing tool (not shown in the figures) and an adapter portion 16 which defines the seat 7.
  • the outer portion 17 and the adapter portion 16 are realised in a single piece (figure 1) .
  • the outer portion 17 and the adapter portion 16 are separate from each other, so that the adapter portion 16 forms an adapter insert which can be inserted in the outer portion 17 to adapt the connection device 1 to a specific type of tubular portion 2 to be connected (see for example figures 2-5) .
  • a radially inner surface 18 of the outer portion 17 advantageously forms an adapter seat 19 adapted to receive the adapter portion 16 at its interior (figure 5) .
  • such adapter seat 19 comprises an annular groove 20 adapted to receive a seal 21 at its interior, preferably an O-ring.
  • Such seal 21, arranged between the outer portion 17 and the adapter portion 16 realises an elastic connection between these portions 16, 17 in order to prevent an accidental loss of the adapter portion 16 from the adapter seat 19.
  • an outer edge 22 of the outer portion 17 is radially folded inward, so to form a constraint which prevents the extraction of the adapter portion 16 from the adapter seat 19 of the outer portion 17 in the direction of the outer end 31. Still more advantageously, such folded outer edge 22 forms an additional projection 23 having a substantially V profile, so to penetrate into the outer layer 8 of the tubular portion 2, thus collaborating with the projections 9 of the adapter portion 16 in their holding of the tubular portion 2.
  • the adapter portion 16 advantageously comprises an annular protuberance 24 which radially juts outward, so to form a stroke-end stop * for the insertion of the adapter portion 16 within the adapter seat 19 of the outer portion 17 (figures 6-9) .
  • Such annular protuberance 24 is adapted to be in abutment against a front surface 25 of the outer edge 22 of the outer portion 17 when the adapter portion 16 reaches the correct mounting position within the adapter seat 19.
  • the adapter portion 16 at its inner end 30 can comprise a bevel 29.
  • a radially outer surface 35 of the adapter portion 16 forms anti-extraction means adapted to lock the adapter portion 16 to the outer portion 17.
  • anti- extraction means comprise a radially outer annular groove 26, preferably situated in proximity to the inner end 30.
  • the annular groove 26 has the advantageous role of receiving part of the material of the outer portion 17 which is moved during the pressing, thus making possible a form coupling between the adapter portion 16 and the outer portion 17.
  • the adapter insert 16 comprises one or more notches 32, preferably axially oriented, which are arranged inwardly with respect to the annular groove 12 for the seal 13 and which open towards the inner end 30 of the adapter portion 16 (figures 8 and 9) .
  • the adapter portion 16 is locally more pliable and therefore the pressing operation to constrain the tubular portion 2 in the seat 7 is facilitated.
  • the adapter portion 16 is preferably realised by means of moulding or casting in brass, in plastic material, aluminium or aluminium alloy.
  • connection device according to the invention resolves the problems connected with connection devices according to the prior art .
  • connection device not requiring the presence of an opposing element to be inserted in the passage opening for the fluid of the pipe or the tubular portion of the component to be connected, permits maintaining the fluid flow substantially undisturbed, even near the connection itself, avoiding abrupt section variations, shutter effects and therefore undesired turbulences and head losses .
  • connection device reduces the risk of escaping of the tubular portion inserted in the device itself, since the axial forces acting on the latter are nearly nonexistent.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

Dispositif de connexion (1) destiné à joindre une partie tubulaire d'un premier élément en connexion fluidique avec un second élément d'un système de transport de fluides. Le dispositif de connexion comprend un corps principal (3) qui définit une zone de passage (33) à l'intérieur, et une partie de connexion sensiblement tubulaire t (5) en communication fluidique avec cette zone de passage (33). La partie de connexion (5) définit un logement (7) qui est destiné à accueillir cette partie tubulaire (2) et peut être pressé radialement afin d'entrer en contact avec cette partie tubulaire (2), par interférence. Le logement (7) comprend au moins une saillie (9) qui fait saillie radialement vers l'intérieur et qui est disposée et formée de façon à pénétrer au moins partiellement dans une couche extérieure (8) de la partie tubulaire (2), à la suite de la pression radiale de la partie de connexion (5).
PCT/IT2006/000526 2006-07-11 2006-07-11 Connexion pour tuyaux WO2008007396A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IT2006/000526 WO2008007396A1 (fr) 2006-07-11 2006-07-11 Connexion pour tuyaux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2006/000526 WO2008007396A1 (fr) 2006-07-11 2006-07-11 Connexion pour tuyaux

Publications (1)

Publication Number Publication Date
WO2008007396A1 true WO2008007396A1 (fr) 2008-01-17

Family

ID=37822693

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2006/000526 WO2008007396A1 (fr) 2006-07-11 2006-07-11 Connexion pour tuyaux

Country Status (1)

Country Link
WO (1) WO2008007396A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2236889A1 (fr) * 2009-03-31 2010-10-06 VIEGA GmbH & Co. KG Raccord destiné au raccordement d'un tuyau

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1808101A (en) * 1927-12-12 1931-06-02 Eastman Joseph Peter Hose clamp
US4018462A (en) * 1975-10-31 1977-04-19 Hitachi Metals, Ltd. Pipe fitting
EP0955493A1 (fr) * 1998-04-20 1999-11-10 Sabras S.r.l. Raccord de compression pour tuyaux
EP1197701A1 (fr) * 2000-10-10 2002-04-17 Interhydraulik Gesellschaft für Hydraulikkomponenten mbH Dispositif de connection pour conduites de transport de fluide
DE20300918U1 (de) * 2003-01-22 2003-03-20 Franz Viegener II GmbH & Co. KG, 57439 Attendorn Pressverbindungsanordnung
EP1593898A1 (fr) * 2004-05-07 2005-11-09 VIEGA GmbH & Co. KG. Elément d'étanchéité

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1808101A (en) * 1927-12-12 1931-06-02 Eastman Joseph Peter Hose clamp
US4018462A (en) * 1975-10-31 1977-04-19 Hitachi Metals, Ltd. Pipe fitting
EP0955493A1 (fr) * 1998-04-20 1999-11-10 Sabras S.r.l. Raccord de compression pour tuyaux
EP1197701A1 (fr) * 2000-10-10 2002-04-17 Interhydraulik Gesellschaft für Hydraulikkomponenten mbH Dispositif de connection pour conduites de transport de fluide
DE20300918U1 (de) * 2003-01-22 2003-03-20 Franz Viegener II GmbH & Co. KG, 57439 Attendorn Pressverbindungsanordnung
EP1593898A1 (fr) * 2004-05-07 2005-11-09 VIEGA GmbH & Co. KG. Elément d'étanchéité

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2236889A1 (fr) * 2009-03-31 2010-10-06 VIEGA GmbH & Co. KG Raccord destiné au raccordement d'un tuyau
US9249907B2 (en) 2009-03-31 2016-02-02 Viega Gmbh & Co. Kg Fitting for connecting a pipe

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