Kusiyana Pakati pa 3kgf/cm² ndi 5kgf/cm² Yankee Dryers mu Papermaking

Mu zida zopangira mapepala, mafotokozedwe a "Yankee dryer" safotokozedwa kawirikawiri mu "makilogalamu". M'malo mwake, magawo monga m'mimba mwake (monga, 1.5m, 2.5m), kutalika, kuthamanga kwa ntchito, ndi makulidwe a zinthu ndizofala kwambiri. Ngati "3kg" ndi "5kg" apa akutanthauza kuthamanga kwa ntchito kwa Yankee dryer (gawo: kgf/cm², mwachitsanzo, kilogalamu-mphamvu pa sentimita imodzi), kusiyana kwawo kwakukulu kumawonekera kwambiri m'mbali zotsatirazi:

1. Kutentha Kosiyanasiyana Kogwira Ntchito

Kutentha kwa makina oumitsira a Yankee nthawi zambiri kumadalira nthunzi yokhuta mkati, ndipo kuthamanga kwa nthunzi kumagwirizana mwachindunji ndi kutentha (motsatira mawonekedwe a nthunzi):

Kutentha kwa nthunzi yokhuta pa 3kgf/cm² (pafupifupi 0.3MPa) ndi pafupifupi 133℃;

Kutentha kwa nthunzi yokhuta pa 5kgf/cm² (pafupifupi 0.5MPa) ndi pafupifupi 151℃.

Kusiyana kwa kutentha kumakhudza mwachindunji mphamvu youma ya pepala: mphamvu ikakwera (ndipo kutentha kukakwera), kutentha kumasamutsidwira ku pepala pa nthawi iliyonse, zomwe zimapangitsa kuti liume mofulumira. Izi zimapangitsa kuti likhale loyenera mapepala omwe amafunikira mphamvu youma kwambiri (monga mapepala a minofu ndi makina a mapepala othamanga kwambiri).

2. Kugwiritsa Ntchito Mphamvu Mosiyanasiyana Pakuuma ndi Kugwiritsa Ntchito Mphamvu Mosiyanasiyana

Kuuma bwino: Choumitsira cha Yankee cha 5kgf/cm², chomwe chili ndi kutentha kwakukulu, chimakhala ndi kusiyana kwakukulu kwa kutentha poyerekeza ndi pepala, zomwe zimapangitsa kuti kutentha kusamutsidwe mwachangu. Chimatha kuwononga chinyezi chochuluka nthawi imodzi ndikusintha kuti chigwirizane ndi liwiro lalikulu la makina ogwiritsira ntchito mapepala.

Mtengo wogwiritsira ntchito mphamvu: Nthunzi pa mphamvu ya 5kgf/cm² imafuna mphamvu zambiri zotulutsira boiler, zomwe zimapangitsa kuti mphamvu zigwiritsidwe ntchito kwambiri (monga malasha, gasi wachilengedwe, ndi zina zotero). Nthunzi pa mphamvu ya 3kgf/cm² imagwiritsa ntchito mphamvu zochepa, zomwe zimapangitsa kuti ikhale yoyenera pazochitika zomwe liwiro louma silili lofunika kwambiri (monga makina a mapepala othamanga pang'ono komanso mapepala okhuthala).

3. Mitundu ndi Njira Zoyenera Zopangira Mapepala

Choumitsira cha Yankee cha 3kgf/cm²: Ndi kutentha kochepa, chimagwiritsidwa ntchito pa mapepala omwe amakhudzidwa ndi kutentha (monga mapepala ena opakidwa sera, mapepala okhala ndi zokutira zomwe zimasinthasintha kutentha) kapena mapepala okhuthala omwe amafunika kuuma pang'onopang'ono kuti apewe kupindika ndi kusweka (monga bolodi la mapepala, pepala lokhuthala la kraft).

Choumitsira cha Yankee cha 5kgf/cm²: Ndi kutentha kwakukulu, chimagwiritsidwa ntchito pa mapepala opangidwa ndi minofu (monga pepala losindikizidwa, mapepala olembera), mapepala opangidwa ndi anthu opangidwa mofulumira kwambiri, ndi zina zotero. Chingathe kuchotsa chinyezi mwachangu, kuonetsetsa kuti makina olembera mapepala akugwira ntchito bwino, ndikuchepetsa chiopsezo cha kusweka kwa mapepala pochepetsa nthawi yokhazikika ya pepalalo pouma.

4. Zofunikira Zosiyanasiyana pa Zida ndi Chitetezo cha Zipangizo

Ngakhale kuti mphamvu zonse za 3kgf/cm² ndi 5kgf/cm² zimakhala za ziwiya zotsika mphamvu (nthawi zambiri, mphamvu ya kapangidwe ka choumitsira cha Yankee imakhala yokwera kuposa mphamvu yogwirira ntchito yokhala ndi malire otetezeka), mphamvu yamphamvu imatanthauza zofunikira zapamwamba pang'ono pa mphamvu ya zinthu, magwiridwe antchito otseka, ndi makulidwe a khoma la choumitsira cha Yankee:

Zipangizo zodulira za makina oumitsira a Yankee a 5kgf/cm² (monga chitsulo chosungunuka, chitsulo chosungunuka) ziyenera kutsimikizira kukhazikika pansi pa kupsinjika kwakukulu. Kulondola kwa kukonza kwa ma seams olumikizira, zisindikizo za flange, ndi zina kumakhala kolimba kwambiri kuti nthunzi isatuluke.

Onse ayenera kutsatira malamulo a chitetezo cha ziwiya zopanikizika, koma choumitsira cha Yankee cha 5kgf/cm² pressure chingakhale ndi kuwunika pafupipafupi komanso kokhwima nthawi zonse (monga mayeso a hydrostatic).

Chidule

Zipangizo zoumitsira za Yankee za 3kgf/cm² ndi 5kgf/cm² zimasintha kutentha ndi mphamvu youma pogwiritsa ntchito kusiyana kwa mphamvu ya nthunzi. Kusiyana kwakukulu kuli mu liwiro louma, mtengo wogwiritsira ntchito mphamvu, ndi mitundu yoyenera ya mapepala. Kusankha kuyenera kuweruzidwa mokwanira kutengera liwiro la makina a pepala, mawonekedwe a mtundu wa pepala, bajeti yogwiritsira ntchito mphamvu, ndi zina zotero. Kupanikizika kwakukulu sikokwanira kwenikweni; kuyenera kufanana ndi zofunikira pakupanga.