DK168241B1 - Pipe for lining underground pipelines - Google Patents

Pipe for lining underground pipelines Download PDF

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Publication number
DK168241B1
DK168241B1 DK577187A DK577187A DK168241B1 DK 168241 B1 DK168241 B1 DK 168241B1 DK 577187 A DK577187 A DK 577187A DK 577187 A DK577187 A DK 577187A DK 168241 B1 DK168241 B1 DK 168241B1
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DK
Denmark
Prior art keywords
wall
casing
pipeline
pipe
underground pipelines
Prior art date
Application number
DK577187A
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Danish (da)
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DK577187A (en
DK577187D0 (en
Inventor
Thomas Johansson
Bjoern Olsson
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Uponor Nv
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Filing date
Publication date
Priority claimed from SE8600964A external-priority patent/SE8600964L/en
Application filed by Uponor Nv filed Critical Uponor Nv
Publication of DK577187A publication Critical patent/DK577187A/en
Publication of DK577187D0 publication Critical patent/DK577187D0/en
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Publication of DK168241B1 publication Critical patent/DK168241B1/en

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Description

i DK 168241 B1in DK 168241 B1

Opfindelsen angår et rør til foring af underjordiske rørledninger.The invention relates to a pipe for the lining of underground pipelines.

En metode til renovering af underjordiske rørledninger består g i at fore rørledningen med et rør, som trækkes ind i rørled ningen og dernæst fastgøres heri ved hjælp af et hærdende materiale, såsom cementmørtel, som sprøjtes ind mellem ydersiden af foringsrøret og indersiden af rørledningen. De foringsrør, der i dag benyttes, er relativt stive, og det er derfor i de fleste tilfælde nødvendigt at udgrave en stor skakt ved den ende af rørledningen, hvor foringsrøret skal indføres, i den underjordiske rørledning. Yderligere kan det være vanskeligt at trække disse foringsrør gennem rørledningerne, hvis der i de gamle rørledninger er en indsnævring, en retningsæn-dring eller andre forhindringer.One method of renovating underground pipelines consists of lining the pipeline with a pipe which is drawn into the pipeline and then secured therein by a hardening material, such as cement mortar, which is injected between the outside of the casing and the inside of the pipeline. The casings used today are relatively rigid, and therefore in most cases it is necessary to excavate a large shaft at the end of the pipeline where the casing is to be inserted into the underground pipeline. Furthermore, it may be difficult to pull these casings through the pipelines if there is a narrowing, a change of direction or other obstacles in the old pipelines.

Formålet med opfindelsen er at tilvejebringe et foringsrør, som er lettere at håndtere, som letter indføringen, og som reducerer det arbejde, der må udføres på stedet sammenlignet med, hvad der er tilfældet ved brug af almindelige foringsrør også i det tilfælde, hvor der er forhindringer i rørledningen.The object of the invention is to provide an easier-to-handle casing which facilitates insertion and which reduces the work that has to be done on-site compared to what is the case with ordinary casings even in the case where there are obstacles in the pipeline.

Det ifølge opfindelsen tilvejebragte foringsrør omfatter, et rør af kendt sammensat type med en i rundtgående retning stiv korrugeret ydervæg af polymert materiale, som er fastgjort 2 5 til en glat yderside af en elastisk indervæg, som også har en glat inderside. Ved kendte udførelsesf orner for denne type rør er indervæggen stiv, og det sammensatte rør bliver herved så stift, at det ikke er i stand til at afhjælpe de ovenfor nævnte ulemper.The casing provided by the invention comprises a tube of known composite type having a circumferentially rigidly corrugated outer wall of polymeric material which is attached to a smooth exterior of an elastic inner wall which also has a smooth interior. In known embodiments of this type of pipe, the inner wall is rigid, and the composite pipe thereby becomes so rigid that it is unable to overcome the disadvantages mentioned above.

3030

Endvidere kendes fra den til grund for DK-B1-163260 liggende danske patentansøgning nr. 4026/86, almindelig tilgængelig 24. februar 1987 (dvs. efter foreligende ansøgnings priori- tetsdag), et rør med en ydre korrugeret væg og en indre glat 3 5 væg. Det anføres, at den indre væg kan være fremstillet af en olefinbaseret termoplastisk elastomer, såsom en ethylen-baseret termoplastisk elastomer.Furthermore, from Danish Patent Application No. 4026/86, which is available on February 24, 1987 (ie according to the priority date of the present application), a tube with an outer corrugated wall and an inner smooth 3 is known from the basis of DK-B1-163260. 5 wall. It is stated that the inner wall may be made of an olefin-based thermoplastic elastomer such as an ethylene-based thermoplastic elastomer.

DK 168241 B1 2DK 168241 B1 2

Til opnåelse af ovennævnte formål med opfindelsen er der tilvejebragt et rør, som er ejendommeligt ved de i krav 1 anførte tegnende træk.In order to achieve the above object of the invention, a tube is provided which is characterized by the drawing features of claim 1.

5 Opfindelsen forklares nærmere nedenfor under henvisning til tegningen, hvor fig. 1 viser dels fra siden og dels i snit en udførelsesform for et foringsrør ifølge opfindelsen, fig. 2 lodret snit visende anvendelsen af foringsrøret i fig. 1, og fig. 3 et delsnit af et foringsrør ifølge opfindelsen, hvor rørets ydervæg har en anden profil*The invention is explained in more detail below with reference to the drawing, in which fig. 1 is a side elevational view, partly in section, of an embodiment of a casing according to the invention; FIG. 2 is a vertical section showing the use of the casing of FIG. 1, and FIG. 3 is a partial section of a casing according to the invention, the outer wall of the pipe having a different profile *.

Det i fig. 1 viste foringsrør er af en kendt udførelsesform, idet det omfatter en korrugeret ydervæg 10 og en 20 indervæg 11 med glat indre og ydre overflade, og ydervæg gens indre toppe er fastgjort til indervæggens glatte ydre overflade ved henvisningstallet 12. Den korrugerede ydervægs ribber har i dette tilfælde halvcirkulær form. Ydervæggen består af polyethylen, polypropylen eller PVC, som det er 2 5 almindeligt for den type rør, der heri henvises til. Den indre glatte væg 11 af røret er derimod fremstillet af en termoplastisk elastomer, som kan forarbejdes i en ekstruder, og som kan sammensmeltes med den korrugerede ydervæg, og består af EPDM blandet med polyethylen. Det beskrevne forings-30 rør færdigfremstilles på en fabrik og kan derefter anvendes uden nogen form for efterbehandling til renovering af underjordiske rørledninger på en måde, som er vist i fig. 2.The FIG. 1 is a known embodiment in that it comprises a corrugated outer wall 10 and an inner wall 11 with smooth inner and outer surface, and the outer tops of the outer wall are fixed to the smooth outer surface of the inner wall at reference numeral 12. The corrugated outer wall ribs have this case semi-circular shape. The outer wall consists of polyethylene, polypropylene or PVC, as is common for the type of pipe referred to herein. The inner smooth wall 11 of the tube, on the other hand, is made of a thermoplastic elastomer which can be processed in an extruder and which can be fused to the corrugated outer wall and consists of EPDM mixed with polyethylene. The described casing 30 is finished in a factory and can then be used without any post-treatment for the renovation of underground pipelines in a manner shown in FIG. 2nd

35 ' DK 168241 B1 3 I fig. 2 er der vist en underjordisk rørledning 13, som strækker sig mellem et mandehul 14 og en mandehul 15. Figuren viser, at foringsrøret, der her i sin helhed har henvisningstallet 16, indføres i rørledningen fra den ende af denne, der står 5 i forbindelse med mandehullet 14. Da foringsrøret ifølge op·*· findelsen let kan bøjes til en relativt lille radius på grund af, at indervæggen 11 består af en termoplastisk elastomer og således kan sammenpresses (rynkes) ved indersiden af bøjningen og/eller kan strækkes ved ydersiden af bøjningen for jo at vende tilbage til den spændingsfrie tilstand, når forings røret rettes ud, er det ikke nødvendigt at foretage en udgravning ved rørledningens indføringsende; foringsrøret kan let fra jordniveau føres gennem mandehullet og ind i rørledningen 13, idet det bøjes i nødvendig grad. Med henblik på at lette ^5 indføringen af foringsrøret i rørledningen er der ved rørled ningens indføringsende anbragt en bøjet indføringstragt 17. Foringsrøret trækkes ind i rørledningen ved hjælp af et reb 18, som strækker sig hen over en skive 19 i mandehullet 15 og er forbundet med et hejseapparat 20, der er anbragt i jord-20 niveau.35 'DK 168241 B1 3 In FIG. 2, an underground pipeline 13 is shown which extends between a manhole 14 and a manhole 15. The figure shows that the casing, which in its entirety has the reference numeral 16, is inserted into the pipeline from the end of it which is connected 5 with the manhole 14. As the casing according to the invention can be easily bent to a relatively small radius because the inner wall 11 consists of a thermoplastic elastomer and thus can be compressed (wrinkled) at the inside of the bend and / or can be stretched at the outside of the bend, in order to return to the stress-free state when the casing is straightened, it is not necessary to excavate at the insertion end of the pipeline; the casing can be easily passed from the ground level through the manhole and into the conduit 13, bending it to the required degree. In order to facilitate the insertion of the casing into the pipeline, a curved introductory funnel 17 is provided at the insertion end of the pipeline. The casing is pulled into the pipeline by means of a rope 18 extending over a disc 19 in the manhole 15 and connected. with a hoisting device 20 disposed at ground-20 level.

På grund af at foringsrøret har korrugeringsribber med halvcirkulær form, lettes indføringen af foringsrøret i rørledningen, idet foringsrøret da lettere kan passere eksisterende skarpe kanter i rørledningen uden at blive fanget af sådanne kanter. Yderligere gør den fleksible opbygning det meget let at føre det forbi nedtrykninger og retningsændringer i den gamle rørledning. Indføringen lettes yderligere af, at foringsrøret, når det strækkes, f.eks. på grund af at det sidder fast i rørledningen på grund af store friktionskræfter eller af andre årsager, aftager i diameter og derfor lettere kan passere begrænsninger i rørledningen.Because the casing has corrugated ribs of semi-circular shape, the introduction of the casing into the pipeline is facilitated, as the casing can then more easily pass existing sharp edges of the pipeline without being trapped by such edges. Furthermore, the flexible structure makes it very easy to pass it by depressions and changes of direction in the old pipeline. The insertion is further facilitated by the fact that the casing, when stretched, e.g. due to it being stuck in the pipeline due to large frictional forces or for other reasons, decreases in diameter and therefore can more easily pass restrictions in the pipeline.

Den korrugerede ydervæg 10 bibringer foringsrøret en rundt-35The corrugated outer wall 10 imparts a round-35 to the casing

Claims (3)

1. Rør til foring af underjordiske rørledninger, og som er 25 af sammensat type med en i rundtgående retning stiv kor rugeret ydervæg (10) af et polymert materiale, som er fastgjort til en glat yderside af en elastisk indervæg (11), som også har en glat inderside, kendetegnet ved, at indervæggen er fremstillet af en termoplastisk elastomer, som 3. består af EPDM blandet med polyethylen, og som kan forarbej des i en ekstruder.A tube for lining underground pipelines, having a composite type having a circumferentially rigidly corrugated outer wall (10) of a polymeric material attached to a smooth exterior of an elastic inner wall (11) which also has a smooth inside, characterized in that the inner wall is made of a thermoplastic elastomer, which 3. consists of EPDM mixed with polyethylene and which can be processed in an extruder. 2. Rør ifølge krav 1, kendetegnet ved, at ydervæggen (10) har korrugeringstoppe med i hovedsagen halvcirkulær 35 form. DK 168241 B1 5Pipe according to claim 1, characterized in that the outer wall (10) has corrugating peaks of generally semi-circular shape. DK 168241 B1 5 3. Rør ifølge krav 1, kendetegnet ved, at ydervæggen består af polyethylen. 5 10 15 20 25 30 35Pipe according to claim 1, characterized in that the outer wall consists of polyethylene. 5 10 15 20 25 30 35
DK577187A 1986-03-04 1987-11-03 Pipe for lining underground pipelines DK168241B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE8600964A SE8600964L (en) 1986-03-04 1986-03-04 RODS FOR INFO LINING OF MARKET LOCATIONS
SE8600964 1986-03-04
PCT/SE1987/000099 WO1987005376A1 (en) 1986-03-04 1987-03-03 Pipe for relining underground pipelines
SE8700099 1987-03-03

Publications (3)

Publication Number Publication Date
DK577187A DK577187A (en) 1987-11-03
DK577187D0 DK577187D0 (en) 1987-11-03
DK168241B1 true DK168241B1 (en) 1994-02-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
DK577187A DK168241B1 (en) 1986-03-04 1987-11-03 Pipe for lining underground pipelines

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DK (1) DK168241B1 (en)
NO (1) NO874592L (en)

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Publication number Publication date
DK577187A (en) 1987-11-03
NO874592D0 (en) 1987-11-03
NO874592L (en) 1987-11-03
DK577187D0 (en) 1987-11-03

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B1 Patent granted (law 1993)
PUP Patent expired