FI92098C

FI92098C - Isoleringsrörkanalsystem

Info

Publication number: FI92098C
Application number: FI920678A
Authority: FI
Inventors: Reijo Hautala
Original assignee: Hautala Ky R
Priority date: 1992-02-17
Filing date: 1992-02-17
Publication date: 1994-09-26
Also published as: FI920678A; DE4390465C2; AU3501093A; NO943001D0; SE9402707D0; DK170719B1; NO303847B1; DE4390465T1; SE9402707L; WO1993016321A1; NO943001L; SE503728C2; FI92098B; FI920678A0

Description

9209892098

Eristysputkikanavaj 3rjestelmaInsulation duct system

KeksinnOn kohteena on eristysputkikanavajarjestelma, joka kSsittSå eristettyja putkistokomponentteja, kuten 5 eristysputkia, palopelteja, saatOpelteja, mittayhteita ja haaraosia, jolloin putkistokomponentti kåsittaa sisaput-ken, ulkoputken ja naiden vaiissa olevan tilan eristysai-netta vårten, jonka putkistokomponentin kummassakin paa-ssa on paatylaippa, joka olennalsesti peittaa sisa- ja 10 ulkoputken vaiisen alueen ja joka liittymaiia sisaputkeen ja ulkoputkeen keskittaa sisaputken ulkoputken suhteen, jolloin lisaksi ulkoputken kehaile on muodostettu laip-parengas.The invention relates to an insulated pipe duct system comprising insulated piping components, such as insulation pipes, fire dampers, baffles, gauges and branch sections, the piping component comprising an inner pipe, an outer pipe and an insulating material for the space in which the pipe is located. substantially covering the silent region of the inner tube and the outer tube 10 and centering the joints with the inner tube and the outer tube with respect to the outer tube of the inner tube, the flange ring being further formed on the periphery of the outer tube.

KeksinnOn mukainen eristysputkikanavajarjestelma 15 sopii erityisesti kaytettavaksi lampO- palo- ja aanieris-tettyihin ilmastointijarjestelmiin, jotka aikaansaadaan liittamana toisiinsa eripituisia ja -muotoisia eristys-putkikappaleita. Halkaisijaltaan putket ovat tyypillisesti alueella 100 - 1200 mm. On huomattava, etta keksinnOn mu-20 kaista eristysputkikanavajarjestelmaa voidaan kåyttaa myOs muita sovellutuksia kuin ilmastointijarjestelmia vårten. Nain olien eristysputkikanavajarjestelmaa voidaan kayttaa muiden kaasujen, kuten myOs veden ja muiden nesteiden kul-jettamiseen.The insulation duct system 15 according to the invention is particularly suitable for use in lamp-fire and sound-insulated air-conditioning systems, which are provided by connecting insulation pipe pieces of different lengths and shapes to each other. The diameter of the pipes is typically in the range of 100 to 1200 mm. It should be noted that the insulation duct system of the present invention can also be used for applications other than air conditioning systems. Thus, an insulated duct system can be used to transport other gases such as myOs water and other liquids.

25 Ilmastointijarjestelmien eristysputket aikaansaa daan viela tana paivana usein siten, etta paikan paaiia putki, jonka sisalla virtaavan vaiiaineen on tarkoitus vir-rata, eristetaan eristysaineella ja eristysaineen ympa-rille asennetaan ulkovaippa. Menetelmå on tyOlas, eika si ta 30 sen vuoksi voi suositella kohteisiin, joissa putkisto on vedettava lyhyessa ajassa. Helpottamaan ja nopeuttamaan putkien asentamista on kehitetty tehdasvalmisteisia eristysputkia, jotka kasittavat sisaputken, ulkoputken ja naiden vaiissa olevan eristeen. Tailaisten eristysputkien 35 ongelmana on yleensa jatkoksien muodostaminen asennuksen 2 92098 aikana. Eristysputkikappaleiden, kuten myOs muiden putkis-tokomponenttien, vaiisien liitoksien on oltava tiiviita ja liitoskohdassa on oltava riittava eristys ymparistOsta. Jatkokset muodostetaan tunnetusti kaytannOssa siten, etta 5 toisiinsa liitettavien putkikappaleiden (ja muiden putkis-tokomponenttien) vaiiin asennetaan vaiiholkki. vaiiholkki asetetaan sisaputkien sisaan ja kiinnitetaan naihin niit-taamalla. Jotta niittaus voitaisiin suorittaa, liitoksen kohdalta sisaputkien ymparilta on poistettava eristysaine 10 ja ulkoputki. Niittauksen jaikeen liitoskohta on eris-tettava ja eristeen ymparille laitetaan vieia vaippa. va-liholkin paikalleen panoa hankaloittaa vieia se, etta si-saputki ei aina ole sama-akselinen sita ympårOivan ulko-putken kanssa, mika johtuu siita, etta eristysputken kul-15 jetuksen aikana tarina ja muu mekaaninen kuormitus pakkaa ulko- ja sisaputken vaiisen eristysaineen toispuoleises-ti, jolloin alunperin ulkoputken kanssa samankeskisesti sijaitseva sisaputki siirtyy pois alkuperaisesta asennos-taan. Kayttamaiia asennuksessa vaiiholkkia saadaan varmis-20 tetuksi, etta toisiinsa liitettavien eristysputkien (ja muiden putkistokomponenttien sisaputket asettuvat sama-akselisesti kohdakkain. Tunnetuistaputkistokomponenteista valmistettujen putkistojen korjaus- ja saneeraustyO on myOs ongelmallista. Tama johtuu siita, etta vioittuneen putkis-25 to-osan vaihtaminen edellyttaa jatkoksien avaamisia, mika on hyvin tyOiasta.Insulation pipes for air conditioning systems are still often provided this day by insulating the pipe in which the flowing resin material is to flow with insulating material and installing an outer jacket around the insulating material. The method is labor and therefore cannot be recommended for sites where the piping needs to be pulled in a short time. To facilitate and speed up the installation of the pipes, prefabricated insulation pipes have been developed, which cover the inner pipe, the outer pipe and the insulation in their silence. The problem with such insulated pipes 35 is usually the formation of splices during installation 2 92098. Silent joints in insulation pipe sections, such as myOs other pipe components, must be tight and there must be sufficient insulation from the environment at the joint. The splices are known to be formed in use by installing a phase sleeve in the piles of the pipe sections (and other pipe components) to be connected to each other. the sleeve is placed inside the inner tubes and fastened to them by riveting. In order to perform riveting, the insulating material 10 and the outer tube must be removed around the inner tubes at the joint. The joint of the riveting part must be insulated and a sheath is placed around the insulation. The fact that the inner tube is not always coaxial with the outer tube surrounding it, which is due to the fact that during transport of the insulating tube, the story and other mechanical load compresses the silent insulation material of the outer and inner tube on one side, makes it difficult to put the outer sleeve in place. -ti, whereby the inner tube, which is originally concentric with the outer tube, moves away from its original position. In the case of installation, it is ensured that the inner pipes of the insulating pipes to be connected to each other (and other piping components are aligned coaxially. openings, which is very workable.

Esilia olevan keksinnOn tarkoituksena on poistaa edeliamainitut ongelmat. Taman toteuttamiseksi keksinnOn mukaiselle eristysputkikanavajarjestelmaile on paaasialli-30 sesti tunnusomaista, etta mainittu paatylaippa ulkokehånså kautta liittyy vaiillisesti ulkoputkeen siten, etta se on kiinnitetty ulkoputken kehaiia olevan laipparenkaan yh-teyteen jarjestettyyn eristysrenkaaseen niin, etta paatylaippa ei ole suorassa kosketuksessa putkistokomponentin 35 ulkoputkeen. KeksinnOn mukaisen kanavajarjestelman suosi- 3 92098 teltavia suoritusmuotoja on esitetty oheistetuissa patent-tivaatimuksissa 2-10.It is an object of the present invention to obviate the aforementioned problems. In order to achieve this, the insulating pipe duct systems according to the invention are generally characterized in that said end flange through its outer circumference is silently connected to the outer pipe so that it is attached to Preferred embodiments of the duct system according to the invention are set out in the appended claims 2-10.

KeksinnOn mukaisen eristysputkikanavajarjestelman suurimmat edut ovat, etta paloluokituksen ja saannOkset 5 tayttavat ilmastointijarjestelmat ja vastaavat ovat hel-posti ja nopeastl aikaansaatavissa, koska asennuspaikkai-sen tyOn maara jaa mlnimiin: eripituiset ja -muotoiset kanavistot ja putkistot on aikaansaatavissa yhdistamaiia eripituisia ja -muotoisia, keksinnOn mukaisia putkistokom-10 ponentteja, mukaan lukien kayrat putket, palopellit, saa-tOpellit, mittayhteet, haarat, muuntoyhteet jne. KeksinnOn mukaisia eristysputkia on viimeksi mainittua tarkoitusta vårten kaytannOssa useita vakiomittoja, joilla halutut kokonaispituudet on aikaansaatavissa. MyOs putkistojen 15 korjaus- ja saneeraustyO on helppoa kun ne on aikaansaatu keksinnOn mukaisilla putkistokomponenteilla. Putkistokom-ponentin paadyissa olevat laipat mahdollistavat, etta va-liholkit, joita perinteisesti kaytetaan liitettaessa eristysputkia toisiinsa voidaan jopa jattaa kokonaan pois lii-20 toksesta. Paadyissa olevat laipat mahdollistavat myOs, etta ulkoputken ja sisaputken vaiinen tila taytetaan eris-tysaineella, esimerkiksi puhallusmenetelmaa hyvaksi kayt-taen, vasta sen jaikeen kun eristysputki muilta osiltaan on valmis.The main advantages of the insulation pipe duct system according to the invention are that the air-conditioning systems and the like which meet the fire classification and yields can be easily and quickly obtained, because the amount of work on site is divided into millions: piping components, including curved pipes, fire dampers, dampers, measuring joints, branches, conversion joints, etc. The insulating pipes according to the invention have several standard dimensions for the latter purpose, with which the desired total lengths can be obtained. Repair and refurbishment of MyOs pipelines 15 is easy when provided with the piping components of the invention. The flanges in the bottom of the piping component allow the intermediate sleeves traditionally used to connect the insulation pipes to each other to be completely omitted from the connection. The flanges in the beds also allow the silent space of the outer tube and the inner tube to be filled with an insulating material, for example using a blowing method, only when the insulating tube is otherwise finished.

j 25 Seuraavassa keksintoa selitetaan seikkaperaisesti yhden suositeltavan suoritusmuodon avulla viittaamalla oheistettuun piirustukseen, jossa kuviossa 1 on esitetty sivukuvantona kaksi keksinnOn mukaista eristysputkea asetettuina kohdakkain liitta-30 mista vårten, kuviossa 2 on esitetty nakyma pitkin kuvion 1 nuo-lia II - II ja kuviossa 3 on esitetty nakyma pitkin kuvion 1 nuo-lia III - III.In the following, the invention will be described in detail by means of one preferred embodiment with reference to the accompanying drawing, in which Figure 1 shows a side view of two insulating pipes according to the invention aligned, Figure 2 shows a view along lines II-II in Figure 1 and Figure 3 shows Figure 3; shown along the line III-III in Figure 1.

4 920984,92098

Kuvion 1 suora eristysputki 1 on esitetty katkais-tuna siten, etta sen molemmat, taysin samanlaiset paat ovat nakyvissa. Vasemmalla oleva eristysputki 2 on tyypiltaan ja paadyiltaan aivan samanlainen kuin eristysputki 1. Eris-5 tysputki 1 kasittaa teraksisen sisaputken 3, teraksisen ulkoputken 4 ja naiden vaiissa olevan tilan, joka on tay-tetty eristysaineella 5. Eristysputken 1 kummassakin pååssa on teraksinen paatylaippa 6, joka peittaa ulko- ja sisaputken vaiisen alueen siten, etta eristysaine 5, esimerkiksi 10 vuorivilla, ei paase ulos. Paatylaipan 6 ulkokeha 7 kiin-nittyy silikonikumia olevan eristysrenkaan 8 vaiitykselia laipparenkaaseen 9, joka on yhta kappaletta ulkoputken 4 kanssa ja paatylaipan sisakeha muodostuu putkimaisesta osasta 10, joka asettuu limittain sisaputken 3 paaile.The straight insulation pipe 1 of Fig. 1 is shown cut so that both of its completely identical ends are visible. The insulating pipe 2 on the left is exactly similar in type and reinforcement to the insulating pipe 1. The insulating pipe 1 covers the steel inner pipe 3, the steel outer pipe 4 and the space in the silent of them, which is filled with insulating material 5. The insulating pipe 1 has a steel end at each end. which covers the silent area of the outer and inner tube so that the insulating material 5, for example 10 rock wool, does not escape. The outer circumference 7 of the end flange 6 is fixed to the flange ring 9 of the silicone rubber insulating ring 8, which is integral with the outer tube 4, and the inner circumference of the end flange consists of a tubular part 10 which overlaps the edge of the inner tube 3.

15 Paatylaippa 6 ei ole metalli-metallikosketuksessa ulkoput-keen 4 tai laipparenkaan 9 metalliseen osaan. Kuvatun jar-jestelyn ansiosta sisaputki 3 tulee keskitetyksi ulkoputken 4 suhteen eika lampOa paase virtaamaan sisSputkesta 3 ulko-putkeen 4 paatylaipan 6 vaiitykselia.The end flange 6 is not in metal-to-metal contact with the metal part of the outer tube 4 or the flange ring 9. Due to the described jar arrangement, the inner tube 3 becomes centered with respect to the outer tube 4 and no lamp is allowed to flow from the inner tube 3 to the outer tube 4 by the silencing of the end flange 6.

20 Laipparenkaan 9 merkitys ei ainoastaan ole siina, etta se toimii paatylaipan 6 ulkokehan 7 vastaanottavana osana ja suojana eristysrenkaalle 8, vaan laipparengas toi-mii myOs kiinnitysvaiineena kun eristysputket 1, 2 halutaan kiinnittaa toisiinsa kuvioissa 1 ja 2 katkoviivalla esite-25 tyn, kasin kiristettavdn kiristyspannan 11 avulla. Laipparengas 9 kasittaa olennaisesti suoran pinnan 12, joka on kulmassa a = 55° ulkoputkeen 4 nahden. Pinta 12 toimii kiristyspintana sen johdosta, etta kiristyspannan 11 sisakeha 13 liukuu pitkin pintaa 12 kun kiristyspantaa kiris-30 tetaan (ja sen halkaisijaa pienennetaan), jolloin toisiinsa liitettavat eristysputket 1, 2 kiristyvat tai puristuvat toisiaan vasten. Kulma a voi edelia mainittu toiminto sai-lyttaen vaihdella alueella n. 40 - 70°. Mikaii kulma on liian suuri, akselinsuuntainen kiristysmatka jaa kovin 35 lyhyeksi, mika asettaa eristysputken osien toleransseille 5 92098 suurempia vaatimuksia ja hankaloittaa kiristyspannan asen-tamista, ja mikali kulma on pieni, vaarana on, etta kiristyspannan sisSkeha 13 ei pysty liukumaan pitkin pintaa 12.The significance of the flange ring 9 is not only that it acts as a receiving part of the outer circumference 7 of the end flange 6 and as a shield for the insulating ring 8, but the flange ring also acts as a fastening means when the insulating pipes 1, 2 are fastened to each other in Fig. 1 and 2. by means of the clamping collar 11. The flange ring 9 covers a substantially straight surface 12 at an angle α = 55 ° to the outer tube 4. The surface 12 acts as a clamping surface due to the inner circumference 13 of the clamping collar 11 sliding along the surface 12 when the clamping collar is tightened (and its diameter is reduced), whereby the insulating tubes 1, 2 to be joined are tightened or pressed against each other. The angle α can vary in the range of about 40 to 70 °, allowing the aforementioned function. If the angle is too large, the axial tightening distance is very short, which places greater demands on the tolerances of the insulating pipe parts 5 92098 and makes it difficult to install the tightening collar, and if the angle is small, there is a risk that the inner collar 13 cannot slide along the pin.

Laipparengas 9 on helposti aikaansaatavissa ulko-5 putkeen 4 tata muotoilemalla.The flange ring 9 can be easily obtained in the outer 5 tube 4 by shaping it.

Laipparengas 9 kasittaa mytts pååtylaipan 6 tasossa olevan pinnan 14, jolloin eristysrengas 8 tulee riittavan kattavasti ymparOidyksi pysyen paikallaan eristysputken eri kasittelyvaiheissa.The flange ring 9 covers the flat surface 14 of the end flange 6, whereby the insulating ring 8 becomes sufficiently comprehensively surrounded while remaining in place during the various stages of handling of the insulating pipe.

10 Paatylaipan 6 putkimainen osa 10 kasittaa kaksi halkaisijaltaan hieman poikkeavaa osaa 10a ja 10b, joiden ylimenokohdassa on rengasolake 15. Osan 10a halkaisija vastaa olennaisesti sisaputken 3 halkaisijaa tai se voi olla muutaman millimetrin suurempi ja osan 10b halkaisija 15 on hieman pienempi kuin sisaputken halkaisija niin, etta putkimainen osa 10 voidaan pienelia vaiykselia tyttntaa sisaputken 3 paaile tai oikeamminkin sisaan. Sisaputki 3 ja putkimaisen osan 10 osa 10b ovat limittain matkan X verran, joka matka voi olla varsin lyhyt, esimerkiksi 20 10 - 20 % ulkoputken 4 halkaisijasta. Putkimaisen osan 10 kiinnityksessa sisaputkeen 3 ei tarvita hitsausta, niitte-ja taikka muita liitosvalineita: rengasolakkeet 15 toimi-vat keskitysvaiineina estaen sisaputken 3 aksiaaliset siirtymiset ulkoputken 4 suhteen. Rengasolakkeen 15 etai-25 syys eristysputken paadysta on 15 - 50 %, edullisesti 20 - 40 % ulkoputken 4 halkaisijasta. Toisiinsa liitetta-vien eristysputkien 1 ja 2 valiin voidaan asentaa katko-viivalla piirretty jatkos- tai vaiiholkki 16, mikali tai-lainen katsotaan edistavan liitoksen kestavyytta ja tur-30 vallisuutta. vaiiholkin 16 turvallisuutta edistava merki-tys on siina, etta liitos pysyy koossa siinakin tapaukses-sa, etta kiristyspanta 11 jostakin syysta avautuisi.The tubular part 10 of the end flange 6 has two slightly different diameter parts 10a and 10b with an annular shoulder 15 at the transition point. The diameter of the part 10a substantially corresponds to the diameter of the inner tube 3 or may be a few millimeters larger and the diameter 15 of the part 10b slightly smaller than the inner tube. that the tubular part 10 can be filled slightly or rather into the inner tube 3. The inner tube 3 and the portion 10b of the tubular part 10 are limited by a distance X, which distance can be quite short, for example 20 to 20% of the diameter of the outer tube 4. No welding, riveting or other connecting means are required for attaching the tubular part 10 to the inner tube 3: the ring shoulders 15 act as centering means, preventing the axial displacements of the inner tube 3 with respect to the outer tube 4. The distance of the annular shoulder 15 from 25 to 50%, preferably 20 to 40% of the diameter of the outer tube 4 An extension or phase sleeve 16, drawn in broken lines, may be installed between the insulating pipes 1 and 2 to be connected to each other, if such is considered to promote the durability and safety of the connection. the safety-promoting meaning of the sleeve 16 is that the joint remains together even in the event that the clamping collar 11 opens for some reason.

Kuviosta 1 nahdaan, etta eristysrengas 8 ei taysin tayta laipparenkaan 9 maarittelemaa tilaa, vaan toiseen 35 yiareunaan on muodostettu ympyrakehaa kiertava pieni ura, 6 92098 joka mahdollistaa eristysrenkaan elåmisen esimerkiksi sil-loin kun kiristyspanta 11 kiristetaan ja muodostetaan lii-tos kahden eristysputken vaiilia.It can be seen from Figure 1 that the insulating ring 8 does not completely fill the space defined by the flange ring 9, but a small groove 6 92098 is formed on the other outer edge 35, which allows the insulating ring to live, for example when the clamping collar 11 is tightened and the two pipes are joined.

Kuviossa 2 eristysputki 1 on esitetty katsottuna 5 pitkin kuvion 1 leikkausta II - II. Viitenumero 17 osoit-taa kiristyspannan 11 kasikayttdista kiristys- ja aukaisu-kahvaa.Fig. 2 shows the insulating pipe 1 seen from 5 along the section II-II in Fig. 1. Reference numeral 17 denotes a casual clamping and opening handle of the clamping collar 11.

Kuviosta 3, joka esittaa nakymaå eristysputken 1 paadysta, nahdaan selvasti, etta paatylaippa 6 ei tule 10 suoraan kosketukseen laipparenkaaseen 9, vaan paatylaipan ja pinnan 14 vaiissa on eristysaineella 8 taytetty rako 18.It can be clearly seen from Fig. 3, which shows the end of the insulating pipe 1, that the end flange 6 does not come into direct contact with the flange ring 9, but has a gap 18 filled with insulating material 8 in the groove of the end flange and the surface 14.

Edelia keksintoa on havainnollistettu vain yhden esimerkin avulla ja sen vuoksi huomautetaan, etta keksintd 15 voidaan yksityiskohdiltaan toteuttaa monella tavalla oheistettujen patenttivaatimuksien puitteissa. Nain olien on ajateltavissa, etta eristysputken tai putkistokomponen-tin laipparengas 9 on ulkoputkeen nShden erillinen kap-pale. Tailainen ratkaisu ei kuitenkaan ole valmistusnSkO-20 kohdat huomioon ottaen laheskaan yhta edullinen. Eristysrenkaan 8 ei vaittamatta tarvitse olla silikonikumia, vaan on ajateltavissa, etta kaytetaan jotain muuta joustavaa, edullisesti lammOnkestavaa materiaalia. Silikonikumin kaytttt on kuitenkin suositeltavaa, koska sen lammdnkesta-25 vyys on jopa noin 200 °C. Laipparenkaan vinon suoran pinnan 12 sijasta voidaan kayttaa vinoa, hieman kaarevaa pin-taa, jolla on aikaansaatavissa mainittu kiristava vaiku-tus, joka edesauttaa tiiviin liitoksen aikaansaamisessa.The foregoing invention has been illustrated by means of only one example, and it is therefore noted that the invention may be practiced in detail in many ways within the scope of the appended claims. Thus, it is conceivable that the flange ring 9 of the insulating pipe or piping component is a separate Kap piece for the outer pipe. However, such a solution is not nearly as advantageous considering the points of manufacture SKO-20. The insulating ring 8 does not necessarily have to be silicone rubber, but it is conceivable that another flexible, preferably heat-resistant material is used. However, the use of silicone rubber is recommended because its heat resistance is as high as about 200 ° C. Instead of an oblique straight surface 12 of the flange ring, an oblique, slightly curved surface can be used, which has said tightening effect, which helps to provide a tight joint.

On ajateltavissa, etta paatylaippa on rei'itetty. MyOskaan 30 paatylaipan putkimaisen osan 10 ei tarvitse kasittaa kak-si halkaisijaa ja rengasolaketta, vaikkakin tama on erit-tain suositeltavaa sen johdosta, etta rengasolake keskit-taa sisaputken aksiaalisesti ja keskittaa myds vaiiholkin (16), mikali tailaista halutaan kayttaa.It is conceivable that the end flange is perforated. Also, the tubular portion 10 of the end flange 30 does not need to have two diameters and a ring shoulder, although this is highly recommended due to the ring shoulder centering the inner tube axially and centering the myds sleeve (16) if desired.

Claims

92098 7

An insulated pipe duct system for insulating insulated piping components, such as insulating pipes, fire dampers, dampers, gauges and branch sections, wherein the piping component provides an insulating material (5) for the inner pipe (3), the outer pipe (4) and the silent space (5). each end has a end flange (6) which substantially covers the silent area of the inner and outer tubes 10 and which centers the connecting grooves on the inner tube (3) and the outer tube (4) with respect to the outer tube, in addition a flange ring (9) is formed on the outer tube circumference, characterized in that said end flange (6) is silently connected to the outer tube (4) via its outer body (7) so as to be attached to an insulating ring (8) arranged in connection with the flange ring (9) of the outer tube circumference so that the end flange is not in direct contact to the outer tube of the piping component.

Insulation pipe duct system according to Claim 1, characterized in that the insulation ring (8) arranged in connection with the flange ring (9) is arranged inside the flange ring.

Insulation duct system according to Claim 2, characterized in that the insulation ring. 25 (8) is a lamm-resistant flexible material.

Insulation duct system according to Claim 3, characterized in that the insulation ring (8) is made of silicone rubber.

Insulation pipe duct system according to Claim 1, characterized in that the flange ring (9) is integral with the outer pipe (4) and is formed by bending the outer pipe.

Insulation duct system according to Claim 5, characterized in that the profile of the flange ring 35 (9), viewed in the tangential direction of the flange ring, provides a substantially straight surface (12) in the form of a ring tensioning, preferably at an angle to the outer pipe. a clampable clamping collar 5 (11) with which the oppositely arranged piping components (1, 2) hardened by the clamping collar can be connected and tightened to each other.

Insulation duct system according to Claim 6, characterized in that the straight surface 10 (12) is at an angle α = approx. 40 to 70 ° with respect to the outer tube (4).

Insulating pipe duct system according to Claim 6, characterized in that the profile of the flange ring (9), viewed in the tangential direction of the flange ring, covers the surface 15 (14) of the piped component.

Insulation duct system according to Claim 1, characterized in that the inner circumference of the end flange (6) consists of a tubular part (10) with a diameter substantially corresponding to the diameter of the inner tube and which overlaps the edge of the inner tube (3).

Insulation duct system according to Claim 9, characterized in that the tubular part (10) has two slightly different diameter parts (10a and 10b) with an annular shoulder (15) at the transition point. ", Wherein the larger diameter part (10a) is closer to the end of the piping component (6) than the smaller diameter part (10b) and that the distance of the annular shoulder from the end of the piping component is 15 to 50%, preferably 20 to 40% of the diameter of the outer pipe (4).