SE455340B

SE455340B - Protective plate for fastening two double pipes

Info

Publication number: SE455340B
Application number: SE8405282A
Authority: SE
Inventors: Sakari Hautala
Original assignee: Sakari Hautala
Priority date: 1983-11-21
Filing date: 1984-10-22
Publication date: 1988-07-04
Also published as: NO159041B; FI834252A0; FI67613C; SE8405282L; SE8405282D0; NO844352L; NO159041C; FI67613B

Abstract

The ends of two double pipes (1), each with an inner (3) and outer (2) pipe, are joined by a protective plate (8) between the outer and inner pipes. Connected to the edge of the plate located against the inner pipe is a female-type outer connection (10) for joining the plate to the outer pipe. Tracks outside the inner connection (9) and the outer connection serve to fasten the plate and seals. In the track (13) outside the outer connection (10) is connected a fixture fillet (6) which in conjunction with a clamp fillet (7) fastens the two double pipes axially.

Description

20 25 30 3.5 455 340 z Fig. 6 visar fästorganet enligt fig. 5 sett i riktning av pilen, Fig. 7 visar ett till teknikens ståndpunkt hörande fästorgan sett uppi- från, Fig. 3 visar detsamma sett 1 riktning av pilen i fig. 7. Fig. 6 shows the fastening member according to Fig. 5 seen in the direction of the arrow, Fig. 7 shows a fastening member belonging to the prior art seen from above, Fig. 3 shows the same seen in the direction of the arrow in Figs. 7.

Hänvisningsbeteckningen 1 betecknar ett dubbelrör, som omfattar ett yttre rör 2 och ett inre rör 3. Mellan dessa finns ett värmeisoleringsämne Ä.The reference numeral 1 denotes a double pipe, which comprises an outer pipe 2 and an inner pipe 3. Between these there is a thermal insulation substance Ä.

Fästorganet enligt uppfinningen har åsatts beteckningen 5 i fig. 3 och N och med 5' i fig. 5 och 6. Med siffran 6 betecknas en fästlist, medelst vilken fastsättningen av två dubbelrör med ändarna mot varandra sker. Den vid fastsättningen använda skjutlisten 7 syns i fig. 2. Fästorganet upp- visar en skyddsskiva 8, som i sin mot det inre rörets ändkant belägna del uppvisar ett honartat, inre anslutningsorgan 9, som är avsett att samverka med änden av det inre röret för att sammankoppla fästorganet S, 5' med sagda inre rör 3. l den mot det yttre rörets ändkant belägna delen av skyddsskïvan förefinns ett yttre anslutningsorgan 10, som är avsett att sammankoppla fästorganet och det yttre röret 2. Radiellt utanför det inre an- slutningsorganet finns ett därtill omedelbart anslutet spår ll. Radiellt innanför det yttre anslutningsorganet 10 och radiellt utanför-detsama finns spår 12 och 13 som omedelbart ansluter sig till det yttre anslut- ningsorganet. I dessa spår kan placeras tätningsorgan 16 och 17, såsom framgår av fig. 2. Dessa spår behövs även för fastsättning av fästorganet 5, 5' vid dubbelrörets ände med anslutningsorgan 9 och 10, med en s.k. listtång.The fastening member according to the invention has been given the designation 5 in Figs. 3 and N and by 5 'in Figs. 5 and 6. The number 6 denotes a fastening strip, by means of which the fastening of two double pipes with the ends against each other takes place. The sliding strip 7 used in the fastening is shown in Fig. 2. The fastening member has a protective disc 8, which in its part located against the end edge of the inner tube has a female, inner connecting member 9, which is intended to cooperate with the end of the inner tube for to connect the fastening member S, 5 'to said inner tube 3. In the part of the protective disc located towards the end edge of the outer tube there is an outer connecting member 10, which is intended to connect the fastening member and the outer tube 2. Radially outside the inner connecting member there is an immediately connected track ll. Radially inside the outer connecting member 10 and radially outside these are grooves 12 and 13 which immediately connect to the outer connecting member. Sealing means 16 and 17 can be placed in these grooves, as can be seen from Fig. 2. These grooves are also needed for fastening the fastening means 5, 5 'at the end of the double pipe with connecting means 9 and 10, with a so-called list pliers.

Fig. 3 visar fästorganets placering i dubbelröret. Dubbelrörets tvärsnitt har formen av en rektangel och dess symmetriaxlar har angivits med bok- stäver A-A och B-B. Som framgår av fíg. 2, har till alla fyra sidor i dubbelrörets ände mellan det yttre och inre röret anbragts ett fästorgan 5. Sammanfogningen säkras genom att man med en s.k. lísttång hårt pressar anslutningsorganens 9 och 10 sidor mot det inre röret 3 och det yttre röret 2. Säkringen kan även åstadkommas med s.k. pop-nitar. På samma sätt ansluts fästorganen 5' till rektangelns hörn. Fästorganens 5 och 5' mått väljes så, att de överlappar varandra i skarvställen i tillräcklig mån d.v.s. ca 1-2 cm, såsom framgår av fig. 1. Fästandet av dubbelröret med ändarna mot varandra sker därefter på ovan beskrivet sätt.Fig. 3 shows the location of the fastening member in the double tube. The cross section of the double tube has the shape of a rectangle and its axes of symmetry are indicated by letters A-A and B-B. As shown in fig. 2, a fastening member 5 has been arranged on all four sides at the end of the double tube between the outer and the inner tube. The joining is secured by using a so-called pliers hard press the sides of the connecting means 9 and 10 against the inner tube 3 and the outer tube 2. The securing can also be provided with so-called pop-nitar. In the same way, the fasteners 5 'are connected to the corner of the rectangle. The dimensions of the fastening members 5 and 5 'are chosen so that they overlap each other in joint places to a sufficient extent, i.e. about 1-2 cm, as shown in Fig. 1. The attachment of the double tube with the ends towards each other then takes place in the manner described above.

Genom uppfinningen ernås bättre värme- och ljudisoleringsegenskaper samt 3 455 340 bättre brandsäkerhet. Såscm en ytterligare fördel kan nämnas lägre till- verkningskostnader, vilket beror på den enkla konstruktíønen. Även mon- teríngen av fästorganet är lättare att utföra.The invention achieves better heat and sound insulation properties and 3,455,340 better fire safety. An additional advantage can be mentioned lower production costs, which is due to the simple design. The assembly of the fastening member is also easier to carry out.

Claims

1. 0 15 20 455 340 '1: CLAIMS Fixing means (5,5') intended for fastening with the ends to each other of a double tube (1) made of sheet metal, such as a ventilation tube, which comprises an outer (2) and an inner ( 3) pipe and an intermediate thermal insulation material (H), in the case of another double pipe, the fastening strips being arranged by means of fastening strips (6) arranged in the outer edges of the fastening means (5,5 ') and a sliding strip (7), characterized in that the fastening member (5, S ') has a protective disc (8) which is intended to be arranged between the inner tube (3) and the outer tube (2) and has a female portion located opposite the end edge of the inner tube (3) having a female inner connecting means (9), which is intended in connection with the end of the inner tube to connect the fastening means (5,5 ') to the inner tube (3) and in its part located towards the end edge of the outer tube (2) has a female outer connecting member (10), which is intended to connect the fastening means (5,5 ') to the outer tube (2) in cooperation with the end of the outer tube, e a groove (11) located radially outside the inner connecting member (9) and tightly connected thereto, a groove located (12) radially inside the outer connecting member (10) and tightly connected thereto, a groove (13) located radially outside the outer connecting member (10) ) and tightly connected thereto and a mounting strip (6) connected to the groove (13) radially outside the outer connecting member (10).