Miwa mungdan hta polyurethane hte matut mahkai ai pipeline ni a matu galaw sa wa ai madang ni gaw, galaw sa wa ai lam yawng hta, arung arai, ladat, galaw ai lam, chyam dinglik ai lam ni hpe shinggrup da ai. Laksan masat masa galaw da ai masa gaw lawu na hte maren rai nga ai:
I. Core Mungdan madang ni
GB/T 29047-2012
Ndai madang gaw, polyurethane-insudude pipe ni a matu madung masat masa ni hpe masat da ya ai, n-gun ja ai polyethylene shinggan casing hte shawng nnan e n-gun ja ai polyurethane foam plastic hpe lup makoi da ai n-gun rawng ai pipe ni a matu ra kadawn ai lam ni hpe hkrak tup tsun dan ai. Madung masat kumla ni gaw:
Insulation layer density 60 kg/m3 hta grau kaba ai (sh) maren sha, closed-cell rate 88% hta grau kaba ai (sh) maren sha rai nga ai, thermal conductivity n law ai (sh) 0.033 W/(m·K) (50 degree) hta grau ai;
Shinggan na casing density 950 kg/m3 hta grau kaba ai (sh) maren sha, tensile n-gun 19 hta grau kaba ai (sh) maren sha rai nga ai.
Municipal heating hte industrial pipeline hkai sun ni hta jai lang mai ai.
GB/T 29046-2012
Chyam dinglik ai ladat ni hpe madung tawn ai, n-gun n-gun n-gun n-gun n-gun, nbung n-gun n-gun chyam dinglik ai lam ni, nbung n-gun shadawn ai lam ni hpe masat da ai, 88% hta grau nna (sh) maren sha re ai hpe random hku jep joi ra ai, insulation layer n-gun hpe hkam sharang lu ai ±3 mm.
2. Structural Design hte arung arai ni a hkrang shapraw ai lam ni
Composite Structure Layer ni a ra kadawn ai lam ni
Bungli galaw ai n-gang pipe: DN800 pipe ni gaw Q235B spiral welded pipe ni hpe lang ra ai (SY/T 5037-2000) shing nrai 20# n-gun n rawng ai n-gang pipe ni (GB/T 8163-2018) hpe lang ra ai, Sa2.5 grade de n-gun shayawm ai tsi ladat hte 3PE layers ni hte ka-up da ra ai;
Insulation layer: Polyurethane density 55 kg/m3 (Mungdan madang npu tsang) hta grau kaba ai (sh) maren sha, silicon carbide hkam sha ai (sh) nbung laru kaba ai masa ni a matu ra ai nbung laru lapran na nbung laru ni, galu kaba ai lam 50–100 mm (magam bungli galaw ai masa ni hpe madung tawn nna gram lajang da ai);
Shinggan na casing: HDPE shinggan casing gaw 15 kV spark test hpe lai ra na rai nna, fiberglass shinggan casing gaw chloride ion hpe 30% jat ya lu ai.
Laksan Scenario adaptation Standards
Oil/Gas Field: Bungli galaw ai n-gang pipe ni gaw GB/T 9711-2017 (n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun) hpe hkan sa ra ai;
High-Temperature Pipes (>140℃): N-gang hte n-gang n-gang shinggan na npawt nhpang ni hpe lang nna, 0.5 mm hta grau nna (sh) maren sha re ai n-gang n-gang n-gang n-gang ni hpe lang u.
3. Production galaw ai lam hte jep joi ai lam hpe hkap la ai lam
Shawng nnan galaw ai lam ni hpe hkrak hkrak galaw ai lam
Pre-fabricated pipe daw ni a galu kaba ai lam gaw, 12 metres langai mi rai nna, 200 mm welding net area hpe joint ni hta tawn da ai;
Hpa majaw nga yang, n-gun kaba ai foaming galaw ai lam gaw, n-gun n rawng ai lam hpe hkang ai < 0.5%, Insulation layer gap 0.5 mm hta grau nna (sh) maren sha rai nga ai.
jep joi ai lam hte hkap la ai lam ni
Shinggan na casing n-gun hpe hkam sharang lu ai ±0.2 mm, kilometer langai hta katsi ai n-gun 2% hta n law ai (hka n-gun 140℃hta hka n-gun n law ai (sh) maren sha re);
Third-party chyam dinglik ai lam gaw, nbung n-gun hpe jep chyoi ra ai (0.033 W/(m·K) hta n-gun (sh) maren sha re) hte hpaw da ai n-gun ( 90% hta grau ai (sh) maren sha re ai lam ni a matu);
300℃du hkra aten kadun na matu nbung katsi ai hpe ninghkap lu ai chyam dinglik ai lam ni hpe jaw ra ai.
4. Hpaga lam hte seng ai madang ni
CJ/T 114-2000
120℃hta n-gun n law ai (sh) maren sha re ai, n-gun n rawng ai pipe ni a matu jat bang ai tara ni, bungli galaw ai steel pipe bunghku a galu kaba ai lam hte insulation layer density a matu ra kadawn ai lam ni hpe tsun da ai;
253.
Mungkan madang ni nga ai, lamu ga kata na thermal network a matu htuk manu ai align ni gaw, shawng nnan na thermal network ni hpe hpawng de da ai.
Ndai hkum tsup ai madang masa hku nna, polyurethane hte matut mahkai ai pipeline ni gaw, arung arai lata ai kaw nna, bungli masing hpe hkap la ai du hkra, hkum tsup ai madang masat da ai hkang zing ai lam hpe lu la ai, yak hkak ai bungli galaw ai masa ni hta kam hpa mai ai lam hte ngang grin ai lam hpe hkam la lu na matu.
