Poliyuritan-bololanɛgɛw waleyali sariyaw Sinuwa jamana na, olu bɛ fɛnw, taabolo, baarakɛcogo, ani kɔrɔbɔliw ɲɛfɔ baara bɛɛ kɔnɔ. sariya kɛrɛnkɛrɛnnen sigicogo ye nin ye:
i. Jamana ka sariyaw jɔnjɔnw .
GB/T 29047-2012
Nin sariya in bɛ poliyuritani-insulated pipes (poliyuritan-insulated pipes) ɲɛfɔli jɔnjɔnw sigi senkan, ka ɲɛfɔli kɛ u jɔcogo kan poliyetilɛni kɛnɛma casing (polyéthylène) caman na ani polyurethane rigide foam plastic buried insulated pipes. taamasiyɛn jɔnjɔnw ye ninnu ye:
Insulation layer density ka bon walima a bɛ bɛn kilo 60/m3 ma, seli dagalen hakɛ min ka bon walima min bɛ bɛn 88% ma, funteni jiginni min ka dɔgɔn walima min bɛ bɛn 0,033 W/(m·k) ma (a bɛ kɛ degere 50 ye );
Kɛnɛma kafolan density ka bon walima a bɛ bɛn kilo 950 ma/m
A bɛ tali kɛ minisiriso ka tasuma ni izini pibiliki forow la.
GB/T 29046-2012
A bɛ sinsin sɛgɛsɛgɛli fɛɛrɛw kan, ka taabolo ɲɛfɔ insulation layer thickness, fiɲɛbɔ sɛgɛsɛgɛli, ani funteni jiginni sumanikɛcogo kan, o bɛ kɛ sababu ye ka seli dagalen hakɛ sɛgɛsɛgɛli kɛ k’a sɔrɔ a ma kɛ ni 88% ye, ani insulation layer thickness tolerance ±3 mm.
2. Jɛkulu ka baarakɛcogo ani a ka fɛnw ɲɛfɔcogo .
Composite structure layer wajibiyalenw .
Baarakɛminɛn min bɛ baara kɛ ni nɛgɛ ye: DN800 pipew ka kan ka baara kɛ ni Q235B spiral welded pipes (SY/T 5037-2000) walima 20# seamless steel pipes (GB/T 8163-2018) ye, ni corrosion anti-corrosion furakɛli bɛ se SA2.5 grade ma ani ka datugu ni 3PE layɛrɛw ye
Insulation layer: poliyuritan density (poliyuritani density) min ka bon walima a bɛ bɛn kilo 55 ma (Jamana hakɛ dɔgɔman, ni silikoni karɔti ye walima ni airgel interlayers (airgel) ye minnu ka kan ka kɛ funteni hakɛ caman na, a janya ye milimɛtɛrɛ 50–100 ye (a bɛ ladilan ka da baarakɛcogo kan)
Kɛnɛyaji: HDPE kɛnɛma ka kan ka tɛmɛ 15 kV spark sɛgɛsɛgɛli la, ani fibreglasi kɛnɛma bɛ kulori ion doncogo ɲɛ ni 30%. ye.
Kɛrɛnkɛrɛnnenya la, a bɛ se ka kɛ cogo min na .
Tumu/gazi foro: Baarakɛminɛn minnu bɛ baara kɛ, olu ka kan ka GB/T9711-2017 (standard for spiral seam submerged arc welded steel pipes) labato);
High-Temperature Pipes (>140 degre ): Aw bɛ baara kɛ ni nɛgɛ ye min bɛ kɛ ni nɛgɛ ye, ni nɛgɛ ye nɛgɛ ye min ka bon ni 0.5 mm ye.
3. sɛnɛfɛnw dilanni taabolo ani sɛgɛsɛgɛli sɔnni .
Pre-Fabrication Process Specifications .
Pipe yɔrɔw janya hakɛ dantigɛlen ye mɛtɛrɛ 12 ye a yɔrɔ kelen na, ni 200 mm welding net yɔrɔ maralen bɛ jogindaw la;
Fomu min bɛ kɛ ni tansiyɔnba ye, o bɛ void hakɛ < 0.5%, insulasi layɛrɛ gap dɔgɔya ka tɛmɛ walima ka bɛn 0,5 mm ma.
Sɛgɛsɛgɛli ni sɔnni wajibiyalenw .
Kɛnɛma daji muɲuni ±0,2 mm, funteni bɔnɛ hakɛ kilomɛtɛrɛ kelen na min ka dɔgɔn walima min bɛ bɛn 2% ma (ji funteni ka dɔgɔn walima min bɛ bɛn degere 140 ma );
Mɔgɔ sabananw ka sɛgɛsɛgɛli ka kan ka funteni jiginni sɛgɛsɛgɛ ( a ka dɔgɔ walima a bɛ bɛn 0,033 W/(M·K)) ani selilɛri dafalen hakɛ ma ( a ka ca ni 90% ye walima a bɛ bɛn 90% ma ɲɛjiralibaw la)
Pipu minnu bɛ funteni caman na, olu ka kan ka funteni hakɛ jateminɛ waati kunkurunnin kɔnɔ, o bɛ se ka kɛ fo ka se degere 300 ma .
4. Industriw ka dɛmɛnanw .
CJ/T 114-2000
Normes supplémentaires pour les pipes insulatifs avec température moyennes de temps 120 degrés , ka a jira ko wajibiw bɛ kɛ nɛgɛ pipe kogo janya ni insulation layer density kan
EN 253 .
A bɛ bɛn ni diɲɛ sariyaw ye, minnu bɛnnen don dugujukɔrɔla réseau integrated pre-fabrication systems ma.
Nin sigida sariyaba in sababu fɛ, pibiliki minnu bɛ kɛ ni poliyuritan ye, olu bɛ se ka kunnafoni dafalen sɔrɔ ka bɔ fɛnw sugandili la ka taa porozew sɔnni na, ka dannaya ni muɲuli sabati baarakɛcogo gɛlɛnw kɔnɔ.
