SE129018C1

SE129018C1 -

Info

Publication number: SE129018C1
Authority: SE
Publication date: 1950-01-01

Description

Uppfinnare: V. Lindedal. Inventor: V. Lindedal.

Foreliggande uppfinning har till foremal en sfirskilt for ror av koppar eller annan tanjbar metall avsedd rOrforbindning, vid vilken det motande roret med en koniskt utvidgad Linde pressas mot ett i rormynningen inskjutet koniskt kopplingsstycke av en overfallsmutter genom formedling av en over roranden tradd koniskt uppborrad press- eller latningsring. Uppfinningen avser att genom lamplig konstruktion av rorforbindningen avlasta tatningsringen frau de pa densamma verkande expanderande krafterna. For detta andamal ar enligt uppfinningen den skruvdel, varmed overfallsmuttern samverkar, sa utford, att densamma i forbindningens hopdragna lage skjuter fram Over anden av det motande roret med en forldngning med cylindrisk borrning, sá att mellan rOranden och forlangningen ett kilformigt ringspar bildas for tatningsringen, vilken ar anordnad att medelst en cylidrisk ytteryta passa i skruvdelsforlangningen med glidpassning. The present invention has for example a separate pipe connection intended for copper or other extensible metal pipes, in which the receiving pipe is pressed with a conically widened Linde against a conical coupling piece inserted into the pipe mouth by an abutment nut by forming a conically drilled conical bore. or ratchet ring. The invention aims to relieve the sealing ring from the expanding forces acting on it by the flexible construction of the pipe connection. For this purpose, according to the invention, the screw part with which the union nut cooperates is so challenged that in the contracted joint of the joint it protrudes above the end of the receiving pipe with an extension with cylindrical bore, so that between the pipe edge and the extension a wedge ring pair is formed for the sealing ring. which is arranged to fit by means of a cylindrical outer surface in the screw part extension with sliding fit.

Uppfinningen mojliggor att anvanda en icke uppslitsad jamfOrelsevis tunn tatningsring, vilken, da den ay Overfallsmuttern pressas upp pa det omslutna kopparrOrets koniska andparti och i samband ddrmed pressar kopparroret med tillrackligt tryck mot den i roret inskjutande koniska kopplingsdelen, expanderar och lagger sig mot den overskjutande skruvdelsforlangningen, som darvid bildar stod for ringen och hindrar ytterligare expansion. De pa tatningsringen verkande expanderande krafterna upptagas salunda av ringen och stodfarlangningen gemensamt, sa att forlangningen kan utforas med mindre godstjocklek, fin som eljest yore mojligt. Vidare blir genom anvandningen av en icke uppslitsad ring tatningen vid roranden dubbel, namligen dels mellan roret och den i rOtänden inskjutande koniska kopplingsdelen, dels mellan tatningsringen och roret resp. f orlangningen. Skulle ringen trots stOdet mot fOrlangningen brista, kvarstar alltid tatningen mellan roret och den koniska kopplingsdelen. The invention makes it possible to use a non-slit comparatively thin sealing ring, which, when pressed on the conical end portion of the enclosed copper tube and in connection therewith, presses the copper tube with sufficient pressure against the conical coupling part projecting into the tube, expands and overlaps the screw. , which thereby forms the ring and prevents further expansion. The expanding forces acting on the sealing ring are thus absorbed by the ring and the stand extension jointly, so that the extension can be carried out with a smaller wall thickness, fine as otherwise possible. Furthermore, by using a non-slotted ring, the sealing at the rudder edge is doubled, namely partly between the rudder and the conical coupling part projecting at the root end, partly between the sealing ring and the rudder resp. for the longing. Should the ring break despite the support against the extension, the seal between the rudder and the conical coupling part always remains.

Uppfinningen shall nu ndrmare beskrivas med ledning av bifogade ritning, som i fig. 1 och 2 visar tva olika utforingsformer av en kompressionsr5rf orbindning enlist uppfinningen. The invention will now be described in more detail with reference to the accompanying drawing, which in Figures 1 and 2 shows two different embodiments of a compression tube connection according to the invention.

I fig, 1 betecknar 10 och 11 de hada rOr av koppar eller liknande, som skola forbindas med varandra, och 12 den i form av en dub- hellionbussning eller kopplingsdel, Over vilken de bada rorens koniska uppdornade andar aro trO.dda. Med 31 Or beteeknad den Over roret 10 tradda skruvdelen. Denna Or utford med en hylsformig forlangning 32, som skjuter fram Over den uppdornade an-den av det motande roret 11 med ett cylindriskt urborrat mynningsparti, ste att ett kilformigt ringspar bildas mellan forldngningens lure cylinderyta 33 och rOrets 11 koniska ytteryta. Den pa motsvarande salt med en cylindrisk ytteryta och en konisk inneryta utformade tatningsringen 31 passar med glidpassning 1 fOrlangningshylsan 32, sa att vid obelastad tatningsring ett spelrum pa exempelvis 0,1 millimeter finnes mellan tatningsringen och den hylsformiga stOdfOrlangningen. Vid sin fran kilkanten vanda andyta hr tatningsringen 34 forsedd med en yttre forstarkningsfldns 35. Vid atdragning av Overfallsmuttern 36, som med en tvarstalld plan yta 37 pressar mot tatningsringens 34 plana andyta, inklammes tatningsringen i det ringformiga kilsparet, varvid ringen pressar fin-den av roret 11 mot bussningen 12 och samtidigt pte grund av kilverkan expanderar till anliggning mot skruvdelsforlangningens 32 inre cylinderyta 33 med sin cylindriska ytteryta, varefter fOrlangningen motsatter sig ytterligare expansion av ringen. Genom anliggningen mot skruvdelens overskjutande hylsformiga forlangning motverkas vidare tatningsringens tendens att -arida sig tillsammans med overfallsmuttern, och darmed hindras effektivt varje icke onskad vridning av kopparroren 10 och 11 relativt varandra. Vid atdragen rorforbindning erhalles tydligen tatning sa.- val mellan kopparroret 11 och bussningen 13 som mellan tatningsringen 34 och kopparroret 11 resp. forlangningen 32. Skulle ringen 34 brista, kvarstar alltid tatningen mellan r5ret 11 och bussningen 12. In Figs. 1, 10 and 11 denote the had tubes of copper or the like which are to be connected to each other, and 12 denote it in the form of a double helion bushing or coupling part, over which the conical convex spirits of both tubes are believed. With 31 Or denoted the Over the rudder 10 threaded screw part. This problem is with a sleeve-shaped extension 32 projecting over the mandreled end of the receiving tube 11 with a cylindrically drilled mouth portion, so that a wedge-shaped pair of rings is formed between the lure cylinder surface 33 of the extension and the conical outer surface of the tube 11. The sealing ring 31 formed on the corresponding salt with a cylindrical outer surface and a conical inner surface fits with a sliding fit in the extension sleeve 32, so that in the case of an unloaded sealing ring there is a clearance of, for example, 0.1 millimeter between the sealing ring and the sleeve-shaped support extension. At its wedge edge surface, the sealing ring 34 is provided with an outer reinforcing flange 35. When the cover nut 36 is tightened, which with a transverse flat surface 37 presses against the flat surface of the sealing ring 34, the sealing ring is clamped in the annular wedge pair, whereby the ring presses the the tube 11 against the bushing 12 and at the same time due to the wedge action expands into abutment against the inner cylinder surface 33 of the screw part extension 32 with its cylindrical outer surface, after which the extension opposes further expansion of the ring. The abutment against the excess sleeve-shaped extension of the screw part further counteracts the tendency of the sealing ring to slide together with the union nut, and thereby effectively prevents any undesired rotation of the copper tubes 10 and 11 relative to each other. When the pipe connection is tightened, sealing is apparently obtained between the copper pipe 11 and the bushing 13 as between the sealing ring 34 and the copper pipe 11 resp. the extension 32. Should the ring 34 rupture, the seal between the pipe 11 and the bushing 12 always remains.

Utforingsformen eligt fig. 2 skiljer sig frau 2— — den i fig. 1 visade i huvudsak endast darige-- nom, att tatningsringen 34 saknar forstark-ningsflans, vilket gor det mojligt att lata skruvdelens 31 hylsformiga forlangning 32 skjuta fram over tatningsringen 34 ett mot,svarande langre stycke.. The embodiment according to Fig. 2 differs from the one shown in Fig. 1 essentially only in that the sealing ring 34 has no reinforcing flange, which makes it possible to let the sleeve-shaped extension 32 of the screw part 31 project over the sealing ring 34. against, corresponding longer paragraph ..

Uppfinningen är givetvis icke begransad till °de ovan beskrivna och pa ritningen visade utforingsformerna, titan modifikationer av olika slag iiro tankbara utan franghende av uppfinningstanken. Sarskilt omfattar uppfinningen givetvis alla ekvivalenta anordningar. The invention is of course not limited to the embodiments described above and shown in the drawing, titanium modifications of various kinds are conceivable without departing from the spirit of the invention. In particular, the invention naturally encompasses all equivalent devices.

Claims

Patent claim:

1. A pipe connection, in particular for copper or other extensible metal pipes, in which the receiving pipe is pressed with a conically enlarged spirit against a conical coupling piece inserted into the pipe mouth by an abutment nut by forming a conically threaded, conically drilled press -, or sealing ring, characterized by the fact that the screw part (31), with which the attack nut (36) cooperates, in the constricted layer protrudes over the spirit of the said ring (11) with a. extension (32) with cylindrical bore, so that between the tube edge and the extension a wedge-shaped pair of rings is formed for the mounting ring (34), and that this, which is preferably not slit, by means of a cylindrical outer surface fits in the screw part extension with sliding fit.

2. A pipe connection according to patent claim 1, characterized in that the sealing ring from the wedge edge is used, as the abutment surface against the abutment nut serving surface is substantially flat.

3. A pipe connection according to claim 1 or 2, characterized in that the sealing ring is provided with an outer reinforcing flange adjacent to it from its wedge edge. Stockholm 1950. Kungl. Boktr. P. A, Norstedt & Kner 900089