China matenthedwe kutchinjiriza zitsulo chitoliro fakitale
Matenthedwe kutchinjiriza payipi chimagwiritsidwa ntchito mu madzi ndi mpweya kufala chitoliro maukonde, mankhwala payipi matenthedwe kutchinjiriza zomangamanga, mafuta, makampani mankhwala, chapakati Kutentha maukonde, chapakati mpweya mpweya mpweya payipi, zomangamanga tauni, etc. Zitsulo jacketed zitsulo gulu kutchinjiriza zitsulo chitoliro.
The matenthedwe kutchinjiriza kapangidwe zitsulo jacketed zitsulo gulu matenthedwe kutchinjiriza zitsulo chitoliro akhoza kugawidwa m'magulu awiri kutengera mitundu kutsetsereka:
1.Mkati kutsetsereka mtundu: ndi matenthedwe kutchinjiriza kapangidwe wapangidwa ndi ntchito zitsulo chitoliro, zotayidwa silicate, kuukoka kuchepetsa wosanjikiza, microporous calcium silicate, matenthedwe kutchinjiriza wosanjikiza, zitsulo zosapanga dzimbiri yomanga zitsulo Mzere, zotayidwa zojambulazo kunyezimira wosanjikiza, polyurethane matenthedwe kutchinjiriza wosanjikiza, kunja chitsulo chitoliro ndi kunja odana ndi dzimbiri wosanjikiza. Chitoliro chamkati chotsetsereka chosungira kutentha kwachitsulo chimapangidwa ndi chitoliro chotengera sing'anga, silicate yophatikizika kapena silicate ya microporous calcium, pulasitiki yolimba ya polyurethane thovu, chitoliro chakunja chachitsulo ndi chipolopolo cha FRP anticorrosive protective layer. The matenthedwe kutchinjiriza mankhwala luso zovekera zosiyanasiyana chitoliro ndi okhwima ndipo khalidwe ndi odalirika.
2. Kunja kutsetsereka mtundu: matenthedwe kutchinjiriza kapangidwe wapangidwa ntchito zitsulo chitoliro, galasi ubweya matenthedwe kusanjikiza wosanjikiza, zitsulo zotayidwa zojambulazo wosanjikiza wosanjikiza, zitsulo zosapanga dzimbiri zomangira lamba, kutsetsereka kalozera thandizo, mpweya kutchinjiriza wosanjikiza, kunja zoteteza zitsulo chitoliro ndi kunja odana ndi dzimbiri wosanjikiza. .
1. Chitoliro chachitsulo chamkati
2. Zinc wolemera primer
3. Chingwe chowongolera cholowera
4. Ubweya wagalasi wosatentha kwambiri
5. Aluminium zojambulazo zowonetsera
6. Air insulation layer
7. Jacket chitsulo chitoliro
8. Chitoliro chakunja chachitsulo chotchingira anti-corrosion
Chitsulo jacketed zitsulo gulu kutchinjiriza zitsulo chitoliro ndi imodzi mwa mobisa mwachindunji kukwiriridwa mapaipi. Ikhozanso kukwiriridwa mobisa popanda dongosolo la konkire, ndiko kuti, kuwonjezeka kwa kutentha kwa chitoliro chachitsulo chogwira ntchito kukuchitika mu chitoliro chakunja, chomwe chimachepetsa mtengo wamtengo wapatali, chifupikitsa tsiku lomanga, chimatsimikizira chitetezo cha payipi yotentha, ndipo imatha. ikhale yotetezeka komanso yogwiritsidwa ntchito kwambiri m'malo osiyanasiyana otentha, Ndiwoyenera makamaka pama projekiti a mapaipi a nthunzi kutentha kwambiri. Kutentha kwautumiki kumatha kufika 150 ℃ - 450 ℃. Malekezero a chitoliro nthawi zambiri amasindikizidwa ndi filimu ya polyethylene kapena tepi yozizira ya PE ya magawo atatu kuti ateteze chinyezi kapena madzi kulowa musanayike kapena pakumanga. Kumangirira kosanjika kwamitundu ingapo kwa zida zotchinjiriza kutentha kumachepetsa kutayika kwa kutentha. Panthawi imodzimodziyo, njira zowongolera zimatengedwa pamtunda wa manja akunja kuti ateteze kubadwa kwa mlatho wozizira, kuti zitsimikizire kutentha kwa zokutira zakunja zotsutsana ndi dzimbiri. Chophimba cha multilayer aluminiyamu chowoneka bwino chimakutidwa ndi zinthu zotchinjiriza, zomwe zimachepetsa kutayika kwa kutentha ndikupangitsa kuti payipi ya nthunzi ikhale yotsika mtengo komanso yololera. Dongosolo la ngalandeyo limatsekedwa mokwanira, ndi mawonekedwe osinthika, kapangidwe koyenera, chitetezo ndi kudalirika. Chitoliro chotulutsa chinyezi pazitsulo zachitsulo sichingangotulutsa mpweya wonyowa panthawi yake, komanso imakhala ngati chitoliro cha alamu cha ntchito ya tsiku ndi tsiku. The matenthedwe chipukuta payipi utenga apamwamba mvuvu compensator, amene anaika mu casing ndi kupanga mwachindunji kukwiriridwa mawonekedwe. Palibe chifukwa chokhazikitsa zowonera bwino. Ntchito yomangayi ndi yabwino ndipo nthawi yomanga ndi yochepa. Ndizoyenera kutumiza nthunzi kapena zofalitsa zina pansi pa 2.5MPa ndi 350 ℃. Chogulitsacho chimagwiritsa ntchito chitoliro chachitsulo ngati chosanjikiza chakunja choteteza, chomwe chili ndi ubwino wa mphamvu zambiri, zovuta zowonongeka, zomangamanga zosavuta ndi kukonza komanso moyo wautali wautumiki.
Pofuna kuchepetsa kutentha kwa payipi kupita kunthaka, chophatikiza chotenthetsera chotenthetsera chimawonjezedwa kunja kwa payipi papaipi yapakati komanso yaying'ono yaing'ono yopatsira kutentha kwamafuta kapena mapaipi otenthetsera. Zomwe zimagwiritsidwa ntchito nthawi zambiri ndi thovu la polyurethane, ndipo kutentha kumakhala pakati pa 18 ndi 120 madigiri. Nkhaniyi ndi yofewa m'mapangidwe. Pofuna kupititsa patsogolo mphamvu zake, chingwe cha polyethylene chapamwamba kwambiri chimagwiritsidwa ntchito kunja kwa kutentha kwa kutentha kuti apange zinthu zowonongeka kuti madzi apansi asalowe muzitsulo zotentha. A wathunthu mkulu-anzanu polyurethane thovu zida ntchito kuwombera kuphulika dzimbiri kuchotsa pamwamba padziko zitsulo chitoliro ndi corona mankhwala pa m'kati pamwamba pa chitoliro chakunja zoteteza chitoliro, kuti patsogolo kugwirizana ntchito ya chitoliro kutchinjiriza matenthedwe. The insulating wosanjikiza zakuthupi ndi okhwima polyurethane thovu ndi osalimba 60kg/m3 kuti 80kg/m3. Kusiyana pakati pa chitoliro chachitsulo ndi casing kumadzazidwa mokwanira ndipo kumakhala ndi mphamvu zina zomangirira, kotero kuti cholimba chikhoza kupangidwa pakati pa magawo atatu a chitoliro chachitsulo, chitoliro cha manja akunja ndi chosanjikiza. Chithovu cha polyurethane chili ndi zida zabwino zamakina komanso kutentha kwamafuta. Nthawi zonse, imatha kupirira kutentha kwa madigiri 120 Celsius. Imatha kupirira kutentha kwa madigiri 180 posintha kapena kuphatikiza ndi zida zina zotchingira.
Prefabricated polyurethane insulated zitsulo chitoliro chagawidwa zigawo zitatu kuchokera mkati kupita kunja:
Malo oyamba: ntchito zitsulo chitoliro pansi
Malinga ndi kapangidwe ndi zofuna za makasitomala, chitoliro chachitsulo chosasunthika, chitoliro chachitsulo chozungulira komanso chitoliro chachitsulo chowongoka nthawi zambiri chimasankhidwa. Pambuyo zitsulo chitoliro pamwamba ankachitira ndi patsogolo kuwombera kuphulika, ndi dzimbiri kuchotsa kalasi ya zitsulo chitoliro angafikire SA2 mu GB / t8923-1988 muyezo, ndi roughness pamwamba akhoza kufika R = 12,5 microns mu gb6060.5-88 muyezo.
Gawo lachiwiri: polyurethane insulation layer
Pulasitiki yolimba ya polyurethane imalowetsedwa m'bowo lomwe limapangidwa pakati pa chitoliro chachitsulo ndi m'chimake chakunja ndi makina otulutsa thovu othamanga kwambiri, omwe amadziwika kuti "tube in chubu thovu".
Gawo lachitatu: mkulu kachulukidwe polyethylene chitetezo wosanjikiza
Zokonzedweratu mu mapaipi apulasitiki akuda kapena achikasu a polyethylene ndi makulidwe ena a khoma. Polyethylene ndi yopanda fungo, yopanda poizoni komanso imamveka ngati sera. Ili ndi kukana kwambiri kutentha kochepa. Kutentha kochepa kwautumiki kumatha kufika - 70 ~ - 100 ℃. Ili ndi kukhazikika kwamankhwala abwino, imatha kukana kukokoloka kwa ma acid ambiri ndi zoyambira (zosagonjetsedwa ndi ma acid okhala ndi oxidizing katundu), imasungunuka muzosungunulira zonse kutentha kwachipinda, ndipo imakhala ndi mayamwidwe otsika. Komabe, chifukwa ndi molekyulu liniya, akhoza pang'onopang'ono kupasuka mu zosungunulira organic popanda kutupa, Wabwino kwambiri kutchinjiriza magetsi. Ntchito yake ndikuteteza wosanjikiza wa polyurethane kuchokera ku zinthu zolimba zamakina, ndipo ina ndi anti-corrosion ndi madzi. Mkulu kachulukidwe polyethylene polyurethane thovu kutchinjiriza zitsulo chitoliro ayenera kutsatira SY / t114-2000 ndi SY / t115-2001 mfundo.
