ʻO ka pilina Flanged kahi kino valve me nā flanges ma nā ʻaoʻao ʻelua, e pili ana i nā flanges ma ka pipeline, ma ka hoʻopaʻa ʻana i ka flange i hoʻokomo ʻia i ka pipeline. ʻO ka pilina Flanged ka mea maʻamau i hoʻohana pinepine ʻia. Loaʻa nā flanges i convex (RF), plane (FF), convex a concave (MF) a me nā mea ʻē aʻe. E like me ke ʻano o ka ʻili hui, hiki ke hoʻokaʻawale ʻia i nā ʻano like ʻole:
(1) ʻano maʻemaʻe: no ka valve me ka haʻahaʻa haʻahaʻa. ʻOi aku ka maʻalahi o ka hana ʻana;
(2) ʻano concave a me convex: kiʻekiʻe ke kaomi hana, hiki ke hoʻohana i ka gasket paʻakikī;
(3) ke ʻano o ka tenon groove: hiki ke hoʻohana nui ʻia ka gasket me ka plastic deformation nui i loko o ka media corrosive, a ʻoi aku ka maikaʻi o ka hopena sealing;
(4) trapezoidal groove type: oval metala apo e like me gasket, hoʻohana 'ia i loko o ka valve hana puʻe ≥64 kg/cm2, a kiʻekiʻe wela wela;
(5) ʻAno Lens: ʻo ka gasket i ke ʻano o ka lens, i hana ʻia me ke kila. Hoʻohana ʻia no nā kiʻekiʻe kiʻekiʻe kiʻekiʻe me ke kaomi hana ≥ 100kg/cm2, a i ʻole nā kiʻekiʻe wela wela;
(6) O-ring type: he ano hou keia o ka pili flange, me ka puka ana mai o na ano a pau o ke apo O-ringe, a ua hooulu ia, ua oi aku ka hilinai i ka hopena o ka hoailona ma mua o ka gasket palahalaha.
(1) Hoʻohui ʻia ʻo Butt-weld: Hoʻopili ʻia nā ʻaoʻao ʻelua o ke kino valve i loko o ka ʻūhā kuʻekuʻe e like me nā koi o ka kuʻi ʻana o ka butt, e pili ana i ka ʻūhā wili paipu, a hoʻopaʻa ʻia ma ka pipeline ma o ka welding.
(2) hoʻohui socket welding: ua hana ʻia nā ʻaoʻao ʻelua o ke kino valve e like me nā koi o ka socket welding a pili pū me ka pipeline ma o ka socket welding.
ʻO ka pilina pili he ala kūpono o ka pilina a hoʻohana pinepine ʻia no nā valve liʻiliʻi. Hoʻopili ʻia ke kino valve e like me ke kaula maʻamau, a ʻelua ʻano ʻano o ka milo kūloko a me ke kaula waho. E pili ana i ke kaula ma ka paipu. Hoʻokaʻawale ʻia ka pilina pili i ʻelua mau kūlana:
(1) hoʻopaʻa hoʻopaʻa pololei: hoʻokani pono nā kaula i loko a me waho i kahi hana sila. I mea e hōʻoiaʻiʻo ai ʻaʻole leak ka hui, pinepine me ka aila kepau, hemp a me PTFE maka mea hoʻopiha kāʻei; I waena o lākou, hoʻohana nui ʻia ke kāʻei ʻo PTFE maka. He maikaʻi ke kūpaʻa corrosion o kēia mea, ka hopena sealing maikaʻi, maʻalahi e hoʻohana a mālama, i ka wā e wehe ai, hiki ke hoʻopau loa ʻia, no ka mea, he papa ia o ke kiʻi ʻoniʻoni ʻole, ʻoi aku ka maikaʻi ma mua o ka aila alakaʻi, hemp.
(2) hoʻopaʻa paʻa ʻole: hoʻoili ʻia ka ikaika o ka hoʻopaʻa ʻana i ka wili i ka gasket ma waena o nā mokulele ʻelua, no laila e hoʻokani ka gasket i kahi hana sila.
ʻElima ʻano o nā milo i hoʻohana mau ʻia:
(1) Metric pae maʻamau;
(2) ʻīniha kaula maʻamau;
(3) Ula paipa kaula kaula;
(4) ʻaʻohe milo hoʻopaʻa paipa kaula;
(5) Nā kaula paipu maʻamau ʻAmelika.
ʻO ka hoʻolauna maʻamau penei:
① International standard ISO228/1, DIN259, no ka pae kuʻekuʻe o loko a me waho, code G a i ʻole PF(BSP.F);
② German standard ISO7/1, DIN2999, BS21, no ka cone niho o waho, ke kaula pili niho o loko, code BSP.P or RP/PS;
③ ʻO ke kūlana Pelekane ISO7/1, BS21, loko o waho a me waho, ka helu PT a i ʻole BSP.TR a i ʻole RC;
④ ʻAmelika maʻamau ANSI B21, loko o waho a me waho, ke code NPT G(PF), RP(PS), RC (PT) niho Angle he 55°, NPT niho Angle he 60°BSP.F, BSP.P a me BSP. Ua kapa ʻia ʻo TR i nā niho BSP.
ʻElima ʻano o nā lola paipu maʻamau ma ʻAmelika Hui Pū ʻIa: NPT no ka hoʻohana maʻamau, NPSC no nā loina paipu kūloko pololei no nā mea pono, NPTR no nā hoʻokuʻi koʻokoʻo alakaʻi, NPSM no nā loina paipu pololei no nā hoʻopili mechanical (free fit mechanical connections), a me NPSL no ka hoʻokuʻu ʻana i nā pili mechanical me nā nati laka. No ka lola paipa i hoʻopaʻa ʻole ʻia (N: American national standard; P: pipe; T: Taper)
4 . Hoʻopili liʻiliʻi
ʻO ke kumu o ka pilina a me ka sila ʻana o ka lima, ʻo ia ke hoʻopaʻa ʻia ka nut, ua paʻa ka lima i lalo o ke kaomi, i nahu ka ʻaoʻao i ka paia o waho o ka paipu, a paʻa paʻa ka cone waho o ka lima me ka cone o ka. kino hui ma lalo o ke kaomi, no laila hiki iā ia ke pale pono i ka leakage. E like memea hookani pila.ʻO nā mea maikaʻi o kēia ʻano pili:
(1) Ka leo liʻiliʻi, ke kaumaha māmā, ka hana maʻalahi, maʻalahi ka wehe a me ka hui;
(2) ka relay ikaika, ka laulā o ka hoʻohana ʻana, hiki ke kū i ke kaomi kiʻekiʻe (1000 kg/square centimeter), ka wela kiʻekiʻe (650 ℃) a me ka haʻalulu hopena;
(3) hiki ke koho i nā ʻano mea like ʻole, kūpono no ka pale ʻana i ka corrosion;
(4) ʻaʻole kiʻekiʻe ka pololei o ka mīkini;
(5) maʻalahi e hoʻouka ma kahi kiʻekiʻe.
5. Hoʻopili pili
He ala hoʻohui wikiwiki e koi ai i ʻelua bolts wale nō a kūpono i nā kīwī haʻahaʻa haʻahaʻa e wehe pinepine ʻia.
Ka manawa hoʻouna: Feb-22-2022