Dade nsa dade a wɔde siw nsu ano ho paipu .
Direct buried insulation pipe, a wɔsan frɛ no "pipe pipe", yɛ "Two-Anamɔn kwan", a ɛyɛ den density polyethylene akyi ahobammɔ layer, polyurethane hard foam plastic insulation ade ne dade paipu. Insulation layer adeɛ no yɛ polyurethane foam a ɛyɛ den a ne density yɛ 60 kg/m3 kɔsi 80 kg/m3, a ɛde gap a ɛda steel pipe ne casing no ntam no ka ho koraa, na ɛwɔ bonding ahoɔden pɔtee bi, sɛdeɛ ɛbɛyɛ a dadeɛ paipu, jacket pipe ne insulation layer no yɛ adeɛ a ɛyɛ den. Polyurethane directly buried thermal insulation pipe foam has good mechanical su ne thermal insulation su, mpɛn pii no ebetumi agyina ɔhyew a ɛkɔ soro 120℃denam nsakrae anaa nkabom ne ɔhyew insulation nneɛma betumi agyina ɔhyew a ɛkorɔn 180℃, a ɛfata ma a awɔw, ɔhyew nsu a ɛkorɔn ne fam ɔhyew paipuline insulation engineering.
Polyurethane tẽẽ asie thermal insulation paipu no fata ma thermal insulation engineering a ɛwɔ media ahorow ahorow a ɛwɔ-50℃- -150℃. Wɔde di dwuma kɛse wɔ nkuropɔn mu ɔhyew, ɔhyew dan, awɔw mu nneɛma a wɔkora so, fango a wotu, ngo afiri hyɛn gyinabea, nnuru a wɔde yɛ adwuma, abɔde mu mframa paipu, anyinam ahoɔden a wɔasie tẽẽ, mfinimfini mframa a wɔde yɛ nsu afiri a wɔde siw nsu ano, nhama a wɔde fa nsu mu, nsu a wɔde siw nsu ano a wɔde siw mframa ano ne nnwuma afoforo a wɔde ɔhyew a ɛbɔ ho ban ne awɔw ho banbɔ mfiridwuma.
Mfaso a ɛwɔ polyurethane a wɔasie no tẽẽ so no siee ɔhyew a wɔde siw ano no mu .
1. Tew adwuma no ho ka so. Sɛnea dwumadibea ahorow a ɛfa ho no akontaabu kyerɛ no, abien control heating pipeline, wɔ tebea a ɛfata mu, betumi atew adwuma no bo so 25%, FRP a wɔde di dwuma sɛ ahobammɔ layer.
2. Ɔhyew a ɛyera a ɛba fam ne ahoɔden a wɔkora so. Ne ɔhyew a ɛkɔ mu ne: λ=0.013—0.03kcal/ .
MHOC no sua koraa sen nneɛma afoforo a wɔtaa de di dwuma wɔ paipu mu wɔ bere a atwam no mu, na insulation effect no yɛ 4~9 mpɛn. Bio nso, ne nsu a ɛtwetwe no sua koraa, bɛyɛ 0.2 kg/m2. Nea enti a nsu no nkɔ fam kɛse ne sɛ polyurethane foam a wɔto mu no dodow bɛyɛ 92%. Ɔhyew a ɛba fam ne nsu a ɛba fam, a ɛka ho ne insulation layer ne nsu a ɛyɛ den a ɛyɛ adwuma yiye a ɛyɛ den a ɛwɔ polyethylene anaa FRP ahobammɔ shell no, sesaa atetesɛm trench laying heating pipeline "wet wet padded jacket" tebea no, tew ɔhyew a ɛyera wɔ ɔhyew pipeline, ɔhyew a ɛyera no nyinaa so kɛse 2% sen amanaman ntam gyinapɛn ahwehwɛde ahorow a ɛfa 10%.
3. Anti-corrosion resistance, insulation adwumayɛ pa, ne ɔsom nkwa tenten. Esiane sɛ polyurethane hard foam insulation layer no ne dadeɛ paipu no were no abɔ mu yie, a wɔayiyi afiri mframa ne nsuo a ɛrekɔ mu no ho nti, ɛtumi di agorɔ pa a ɛko tia-corrosion effect. Bere koro no ara mu no, wɔatoto ne ntokuru a ɛrehuru no mu, na nsu a ɛtwetwe no sua koraa. High density polyethylene shell, glass RP shell wɔ corrosion pa, insulation ne mfiridwuma su. Enti, ɛyɛ den sɛ abɔnten mframa ne nsu bɛsɛe dade afiri a ɛyɛ adwuma no akyi were. Bere tenten a wɔayɛ nsu paipu no mu nsu pa ho adwuma yiye no, sɛnea amannɔne nsɛm kyerɛ no, ɔsom asetra no betumi adu bɛboro mfe 50, a ɛboro atetesɛm mu amena a wɔde to hɔ ne nea wɔde to so no so mpɛn 3 4.
4. Asase a ɛwɔ hɔ no sua, adansi a wɔyɛ no ntɛmntɛm, ne nea eye ma nneɛma a atwa yɛn ho ahyia ho banbɔ. Direct buried heating pipeline nhia sɛ wɔyɛ trench kɛseɛ, na wɔde sie insulation pipe no wɔ asase ase, enti ɛtew project no so kɛseɛ, ɛtew asase adwuma a wɔtutu no so bɛboro 50%, ɛtew civil masonry ne concrete dodoɔ so 90%. Bere koro no ara mu no, insulation pipe processing ne on{5}}site trench parallel, site joint nkutoo, betumi ama bere a wɔde si dan no ayɛ tiaa bɛboro 50%.
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