chifukwa chake VPD ndi yofunika kwambiri pakupanga ma transformer amphamvu komanso omwe ndi ogulitsa akuluakulu ku China

Kuumitsa kwa Nthunzi (VPD) ndi njira imodzi yofunika kwambiri popanga transformer yamagetsi chifukwa imatsimikizira kuti chinyezi chimachotsedwa kwathunthu mu insulation system (makamaka pepala la cellulose ndi bolodi losindikizira). Chinyezi ndi chimodzi mwa adani akuluakulu a kudalirika kwa transformer.

Nazi zifukwa zazikulu zomwe VPD ilili yofunika kwambiri:

1. Chinyezi Chimachepetsa Kwambiri Mphamvu Yoteteza

Makina otetezera kutentha a transformer amapangidwa makamaka ndi zinthu za cellulose (pepala, bolodi losindikizira) pamodzi ndi mafuta a transformer.

• Ngakhale chinyezi cha 1-2% mu cellulose chingachepetse kwambiri mphamvu ya dielectric.
• Madzi angayambitse kutuluka pang'ono kwa madzi, kulephera kwa insulation, ndi zolakwika zamkati.

VPD imachepetsa chinyezi chomwe chili mu insulation nthawi zambiri kufika pansi pa 0.5%, chomwe chimafunika pa ma transformer okhala ndi mphamvu zambiri komanso amphamvu kwambiri.

2. Imakulitsa Moyo wa Transformer

Chinyezi chimathandizira kukalamba kwa cellulose kudzera mu hydrolysis.

Zotsatira za chinyezi:

• Kuwonongeka kwa unyolo wa polima mwachangu
• Kuchepetsa digiri ya polymerization (DP)
• Nthawi yocheperako ya transformer

Kuumitsa bwino pogwiritsa ntchito VPD kungathe kukulitsa moyo wa transformer kuyambira zaka 20 mpaka zaka 40+ nthawi zambiri.

3. Kuthamanga Kwambiri Kuposa Kuwumitsa Kwachizolowezi kwa Vacuum

Mpweya wotentha kapena kuuma kwa vacuum wamba kumachitika pang'onopang'ono chifukwa kusamutsa kutentha mkati mwa kupotoza sikugwira ntchito bwino.

VPD imagwiritsa ntchito solvent yotenthedwa ndi nthunzi (nthawi zambiri palafini) yomwe:

• Zimakhuthala pamwamba pa chotenthetsera chozizira
• Amatulutsa kutentha kwakukulu kobisika
• Amalowa mkati mwa mlengalenga

Zotsatira:

• Kutentha kofanana
• Kuumitsa mwachangu kwambiri

Kuyerekeza nthawi kwachizolowezi:

Njira Yowumitsira Nthawi Yachizolowezi

Kuumitsa mpweya wotentha kwa masiku 10--20

Kuumitsa kwa vacuum kwa masiku 5--10

VPD masiku 2--5

4. Kuumitsa Kwambiri kwa Mapangidwe Olimba Oteteza Kunyumba

Ma transformer akuluakulu ali ndi zinthu zoteteza kutentha kwambiri:

• Masilinda okhuthala a bolodi losindikizira
• Ma windings amitundu yambiri
• Misonkhano ikuluikulu ya core-coil

VPD imapereka kutentha kozama, zomwe zimathandiza kuti chinyezi chisamuke kuchokera ku zigawo zamkati zotetezera kutentha, zomwe zimakhala zovuta ndi njira zina zowumitsira.

5. Zofunika pa Ma Transformer a Voltage Yaikulu

Kwa ma transformer a ≥220 kV, makamaka 400 kV / 500 kV / 765 kV, VPD imaonedwa kuti ndi zida zokhazikika m'makampani.

Opanga ambiri akuluakulu amagwiritsa ntchito, monga:

• Siemens Energy
• Hitachi Energy
• GE Vernova
• TBEA

Popanda kuumitsa bwino, transformer singathe kupirira kugwedezeka kwa mpweya ndipo AC singathe kupirira mayeso.

6. Zimathandiza Kuti Ntchito Iziyenda Bwino

Machitidwe a VPD amathandizanso kuti ntchito yopanga zinthu iziyenda bwino:

• Kufupika kwa nthawi yopangira
• Ubwino wokhazikika wa kutchinjiriza
• Chiwopsezo chochepa cha kulephera kwa mayeso a fakitale

Kwa mafakitale opanga ma transformer akuluakulu, VPD nthawi zambiri imakhala vuto lalikulu pakupanga, kotero kudalirika kwake ndi mphamvu zake ndizofunikira kwambiri.

Mwachidule:

Ngati kupotoza ndi "mtima" wa transformer, kuuma kwa insulation ndiye "moyo" wake.

VPD ndiyo njira yothandiza kwambiri yotsimikizira moyo umenewo.

Popeza mudanena kale kuti mukugwira ntchito yopereka ma tender a zida za transformer kumapulojekiti a Siemens, zida za VPD nthawi zambiri zimakhala imodzi mwa makina ofunika kwambiri komanso owunikidwa kwambiri pakupanga ndalama m'mafakitale a transformer.

Ngati mukufuna, nditha kufotokozanso:

• Chifukwa chiyani mafakitale ambiri osinthira magetsi amakonda VPD kuposa Hot Oil Spray (HOS)
• Magawo ofunikira aukadaulo omwe makasitomala amawunika akamagulitsa machitidwe a VPD
• Ndi makampani ati omwe amalamulira msika wa zida za VPD padziko lonse lapansi

Mfundo zimenezi nthawi zambiri zimakhala zofunika kwambiri pakupanga zida za transformer.

Mu makampani opanga magetsi, msika wa zida za Vapor Phase Drying (VPD) ndi wochepa komanso wapadera, ndi ogulitsa ochepa okha odziwa bwino ntchito padziko lonse lapansi. Opanga ma transformer nthawi zambiri amasankha ogulitsa omwe ali ndi mbiri yayitali komanso ukadaulo wotsimikizika wowuma, chifukwa VPD ndi yofunika kwambiri pakupanga bwino kwa insulation.

Pansipa pali malingaliro othandiza a makampani ogulitsa zinthu zazikulu.

1. Ogulitsa Akuluakulu Padziko Lonse a Zida za VPD

Makampani awa ndi ogulitsa odziwika bwino ku mafakitale akuluakulu a transformer padziko lonse lapansi.

Atsogoleri a Ukadaulo ku Ulaya

• Micavac (Germany)
• Mmodzi mwa opanga mapulogalamu oyambirira a ukadaulo wa VPD
• Amadziwika ndi ukadaulo wa JET evaporator wokhala ndi patent
• Malo ambiri ku Ulaya ndi Asia
• Kawirikawiri amaonedwa kuti ndi ukadaulo wapamwamba kwambiri
• Ma Piller Blower ndi Compressors (Germany)
• Amapereka njira zotsukira mpweya ndi njira zowumitsira zomera zazikulu zosinthira magetsi
• Kawirikawiri zimaphatikizidwa mu mizere ikuluikulu yopangira transformer.

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2. Ogulitsa Zida Zazikulu za VPD zaku China

Tsopano dziko la China lili ndi ogulitsa ambiri amphamvu, makamaka omwe akutumikira mafakitale aku China komanso mapulojekiti otumiza kunja.

Ogulitsa Otsogola aku China

Ndipo Shanghai Trihope

• Wogulitsa ma turnkey a mafakitale a transformer
• Amapereka machitidwe a VPD, mizere yodulira pakati, makina opindirira zojambulazo, ndi zina zotero.
• Zipangizo zimayikidwa m'mafakitale ambiri padziko lonse lapansi.

B Zhongshan Kaixuan Vacuum Technology

• Amapereka mafakitale a VPD omwe amagwiritsidwa ntchito ndi makampani akuluakulu osinthira magetsi ndi makampani amagetsi.

Ogulitsa aku China awa ndi okwera mtengo kwambiri ndipo amagwiritsidwa ntchito kwambiri mu:

• Kum'mwera chakum'mawa kwa Asia
• Kuulaya
• Latini Amerika
• Africa

Mwachitsanzo, Shanghai Trihope yapereka seti imodzi ya VPD ku PEL Pakistan, kampani yotsogola yopanga ma transformer amagetsi ku South Asia. Zipangizozi zakhala zikugwira ntchito bwino ndipo kasitomala wapereka kalata yoyamikira.