Xeetu jëfandikoo gi ñuy jëfandikoo ngir polyurethan- ay pipelines ci macceer yi, liggéey yi, performance yi, ak test yi ci liggéey bi yépp. Sistem biñ gëna xam mooy:
I.
GB/T 29047-2012
Bii standard dafay tëral ay leeral yu am solo ngir tuyo polyurethan-nasulated tuyo yi, di leeral li ñuy laaj ci wàllu jëmmal {1} 1}) yu polyetthylene ci biti, ak pre- fabriced polyurethan foam plastik bu suul. Li gëna am solo mooy:
Densité insulation bi gëna rëy wala tollu ci 60 kg/m3, tëjug- Njëg li gëna rëy wala mu tollu ci 88%, yoon wi gëna néew wala mu tollu ci 0.033 W/(mMK) (ci 50 degre);
Densing bi ci biti moo gëna rëy wala mu tollu ci 950 kg/m3, dooley tensile bi gëna rëy wala mu tollu ci 19 MPa.
Dañu ko mëna jëfandikoo ci wàllu tàngoor ak ci wàllu gasoduk industriel.
GB/T 29046-2012
Focuss ci anam yi ñuy saytoo, leeral anam yi ñuy jëfandikoo ngir gëna dëgër, air- test test, ak natt ay yoon ci wàllu tàngoor, di laaj ñu saytu bu baax {1 } Sill selulaar bu gëna rëy wala mu tollu ci 88%, ak gëna dëgëral couche de centre ±3 mm.
2. Designu jëmmal ak Material
Sàrtu Sàrtu Sàrtu Sàrt
Tuyo asiye: Tuyo yu DN800 dañu wara jëfandikoo tuyo yu am spiral yuñ soude ci Q235B (SY/T 5037 {5000) wala tuyo yu amul 20# 20# 20# gëna bari ay tige asiye (8163-2018), ak pajum anti-corosion ba ci Sa2.5 grade te ñu boole ko ak 3PE layer;
Asulasioŋ: densité polyurethane gëna rëy wala tollu ci 55 kg/m3 (diggante bu gëna suufe), ak carbide silicon yi ñuy yëg wala aérien yi ñuy soxla ngir senaario yu kawe- température, dëgëraay 50-100 mm (ñu tëral ko ci anam yi ñuy doxalee);
Casing bi ci biti: HDPE casing bi ci biti dafa wara jàll ci test 15 kV, te casage bi ci biti dafay yokk permeabilite ion chloride ci 30%.
Standard yuñ jagleel Scenario yu wuute
Oil/Gas Field: Tuyo yiy liggéey dañu wara topp GB/T 971-2017 (taggal ngir tige arcelle arcelle arcelle);
High-Temperature Pipes (>140 degre): Jëfandikool asiye-} ay structure ci biti asiye, ak kasetu asiye galvanise bu ëpp wala mu tollu ci 0.5 mm.
3. Produksioŋ ak saytu
Presififikaasioŋ yiñ tëral ci wàllu liggéey
Guddaayiñu gañcax gi ñu defaree ci {-based sections mooy 12 meetar ci piyees bu nekk, ak 200 mm area reso bu am area buñ reserve ci joint yi;
High{)} 0.5%, gap bi am ci diggante isolation bi moo gëna néew wala mu tollu ci 0.5 mm.
Saytu ak nangu nangu ak nangu
Tolerance bu dëgër bi ci biti ±0.2 mm, tàngoor wi tàngoor di ñàkk ci kilometre bu nekk ci kilometre bu nekk wala mu tollu ci 2% (tànk bu ndox mi gëna néew wala mu tollu ci 140 degre);
Ñatteelu test bi dafa wara xool yoon termik (Less bu ëpp 0.033 W/(m.M.K)) ak tëjug {2} Lu gëna rëy wala mu tollu ci 90% ci senaario yu kawe {4 } }}për);
High{0}} tuyo yi ci température war nañu joxe rapoor test de responsabilite- rapports à férgiter ci 300 degre .
4. Standard yu ndaw yi
CJ/T 114-2000
Norm yu yokk ngir tuyo yu isolé yi am tàngoor wu yam. Njariñ yi gëna néew wala ñu tollu ci 120 degre, di fësal li ñuy laaj ci wàllu tuyo asiye ak densité couche insulation;
EN 253
Dafay am ay sàrt yuñ tëral ci àdduna bi, méngoo ak reso thermique bu nekk ci suufu suuf.
Ci sistem bu mat sëkk bii, polyurethane- ay pipeline yu mat sëkk- di doxal bu baax ci tànneefi mbir yi ba ci nangu projet bi, ngir mëna wóolu ak yàgg gi ci anam yu jafee xam.
