ʻO ka valve i hoʻohana pinepine ʻia e nānā i ke ʻano pili ma waena o ka mea hana uila a me kēlā me kēia pahu

ʻO ka valve i hoʻohana pinepine ʻia e nānā i ke ʻano pili ma waena o ka mea hana uila a me kēlā me kēia pahu

ʻO ka noho ʻana o ka ethylene propylene rubber i helu ʻia ka pae wela he -28 ¡æ~120¡æ. Kū ʻo EPDM no ka terpolymer o ka ethylene, propylene, a me diene, i kapa ʻia ʻo EPT Nordell. ʻO ke kūpaʻa ozone maikaʻi a me ka pale ʻana i ka wā, ka hana hoʻokalakupua uila maikaʻi, ke kūpaʻa maikaʻi i nā capacitors polar a me nā media anorganic. No laila, hiki ke hoʻohana ʻia i ka ʻoihana HVAC, ka wai, ka phosphate ester, ka waiʻona, ka ethylene glycol, a me nā mea ʻē aʻe.
Hoʻohana maʻamau ʻo Valve i nā mea metala ʻole
Aloha, nitrile rubber
He -18 ¡ã C a hiki i 100 ¡ã C. Ua kapa ʻia hoʻi ʻo NITRILE, a i ʻole HYCAR. ʻO ia kahi mea hoʻoheheʻe honua kūpono no ka wai, ke kinoea, ka aila a me ka momona, ka ʻaila (koe wale nō ka ʻaila me nā mea hoʻohui), ka waiʻona a me ka ethylene glycol, ke kinoea liquefied petroleum, propane a me ka butane, ka aila wahie a me nā mea ʻē aʻe he nui. Loaʻa iā ia ke kūpaʻa aahu maikaʻi a me ke kū'ē deformation. ʻO ka papa meaʻai (FG) ka nitrile rubber noho i helu ʻia ka pae wela o -18¡æ i 82¡æ. Kūlike kona haku me ka CFR Standard Part 21, Section 177.2600. Hiki ke hoʻohana ʻia e like me ka nitrile rubber maʻamau akā koi ʻia ka ʻae FDA.
Ethylene propylene rubber EPDM
ʻO ka noho ʻana o ka ethylene propylene rubber i helu ʻia ka pae wela he -28¡æ~120¡æ. Kū ʻo EPDM no ka terpolymer o ka ethylene, propylene, a me diene, i kapa ʻia ʻo EPT Nordell. ʻO ke kūpaʻa ozone maikaʻi a me ka pale ʻana i ka wā, ka hana hoʻokalakupua uila maikaʻi, ke kūpaʻa maikaʻi i nā capacitors polar a me nā media anorganic. No laila, hiki ke hoʻohana ʻia i ka ʻoihana HVAC, ka wai, ka phosphate ester, ka waiʻona, ka ethylene glycol, a me nā mea ʻē aʻe.
ʻO ka papa meaʻai ethylene propylene rubber noho i helu ʻia ka pae wela he -28¡æ~120¡æ. Kūlike kona haku me ka CFR Standard Part 21, Section 177.2600. Hiki ke hoʻohana ʻia e like me ka nitrile rubber maʻamau akā koi ʻia ka ʻae FDA.
PTFE PTFE
ʻO ka pae wela o ka noho Teflon i helu ʻia he -32 ¡ã C a 200 ¡ã C. Kūʻē maikaʻi loa i ka wela kiʻekiʻe a me ka corrosion kemika. Ma muli o ke kiʻekiʻe kiʻekiʻe o ka polytetrafluoroethylene, permeability maikaʻi loa, akā hiki nō ke pale i ka corrosion o ka hapa nui o nā media kemika.
ʻO TEFLON Conductive he huahana TEflON i hoʻololi ʻia e hiki ai i kēia manawa ke hele i ka lining e wehe i ka INSULATION o ka TEflON. Ma muli o kona conductivity, ʻaʻole hiki ke hoʻāʻo ʻia ka polytetrafluoroethylene conductive e ka uila uila.
Hoʻoikaika ʻia polyteflon RTFE
ʻO RTFE kahi hoʻololi o nā mea PTFE. ʻOiai ʻoi loa ka haʻahaʻa o ka friction coefficient o PTFE maʻemaʻe (0.02 ~ 0.04), akā maikaʻi ka ʻaʻahu, a no ka maʻalahi o kona kolo ʻana, nā waiwai mechanical maikaʻi ʻole, haʻahaʻa haʻahaʻa haʻahaʻa, ʻilihune dimensional stability a me nā ʻano ʻē aʻe, no ka mea, he mea nui ka friction. palena. ʻO ka hoʻololi wale ʻana, ma o ke ʻano o ka composite waiwai e hoʻokō i nā koi kūikawā o nā mea hoʻopaʻa hoʻopaʻa paʻa paʻa i nā wahi a pau o ke ola, i ka hoʻomaikaʻi ʻana i ke kūpaʻa ʻana o ka PTFE, hiki ke hoʻohui ʻia me kekahi mau mea pale e like me ke aniani fiber, carbon fiber. , graphite, molybdenum disulfide, pauka keleawe a me kekahi mau mea hoʻohuihui, Ua hoʻokumu ʻia nā hui mesh i loko o ka ʻōnaehana papa PTFE e hoʻomaikaʻi ai i ka ʻoʻoleʻa, ka hana wela, ka pale ʻana, a me ke kūpaʻa ʻana.
ʻO ka lāʻau fluorine Viton
ʻO ka mahana i helu ʻia o ka noho kaila fluorine he -18¡æ~150¡æ. He hōʻailona inoa inoa ʻo Viton o DuPont Company, a ʻo Fluorel kahi hōʻailona inoa inoa e like me ka fluorine rubber o 3M Company. He kiʻekiʻe ke kūpaʻa wela o kēia mea a me ka maikaʻi o ka pale ʻana i ka corrosion. He kūpono no nā huahana hydrocarbon, ka haʻahaʻa haʻahaʻa a me ke kiʻekiʻe o ka ʻakika mineral, akā ʻaʻole i loko o ka media mahu a me ka wai (ʻino ke kūpaʻa wai).
ʻO ka polyethylene UHMWPE kaumaha molekala kiʻekiʻe
Ua helu ʻia nā noho polyethylene kaumaha ultra-kiʻekiʻe mai -32 ¡ã C a 88 ¡ã C. ʻOi aku ka maikaʻi o kēia mea haʻahaʻa haʻahaʻa ma mua o ka PTFE, akā ʻoi aku ka maikaʻi o ka pale kemika. Loaʻa iā Uhmwpe ke kūpaʻa ʻaʻahu maikaʻi a me ka pale ʻana i ka corrosion, a hiki ke hoʻohana ʻia i nā kūlana pale lole kiʻekiʻe.
Silicone copper rubber Silicone
ʻO ke kopa silicone keleawe he polymer me nā pūʻulu organik, nona ke kaulahao nui i haku ʻia me nā silikoni a me nā ʻāpana oxygen. ʻO ke ana wela i helu ʻia mai -100 ¡ã C a 300 ¡ã C. He kūpaʻa maikaʻi ka wela a me ke kūpaʻa wela, maikaʻi loa ka hana insulation uila a me ka inertness kemika nui. He kūpono no ka waikawa organik a me ka haʻahaʻa haʻahaʻa o ka waika inorganic, dilute alkali a me ka alkali concentrated. Nā hemahema: haʻahaʻa ikaika mechanical. Pono ka mālama ʻana ma hope o ka vulcanization.
graphite graphite
ʻO ka graphite he aniani kalapona, he mea hao ʻole, kala hina hina, maikaʻi palupalu, me ka luster metala. ʻO ka paʻakikī o Mohs he 1 ~ 2, ʻo ka umekaumaha kikoʻī he 2.2 ~ 2.3, a ʻo ka nui o ka nui he 1.5 ~ 1.8. Loaʻa iā ia ka pale wela kiʻekiʻe, ke kūpaʻa oxidation, ka pale ʻana i ka corrosion, ke kūpaʻa haʻalulu wela, ka ikaika kiʻekiʻe, ka paʻakikī maikaʻi, ka ikaika lubricating kiʻekiʻe, ka conductivity thermal ikaika, ka conductivity uila a me nā mea ʻē aʻe ʻē aʻe. Loaʻa iā ia ke kūpaʻa oxidation kūikawā, ka lubricity ponoʻī a me ka plasticity i ka wela kiʻekiʻe, a me nā waiwai uila, thermal a adhesion maikaʻi. Hiki ke hoʻohana ʻia e like me ka hoʻopiha a i ʻole ka hana IMPROver no ka lāʻau, plastik a me nā mea hana like ʻole e hoʻomaikaʻi ai i ka pale ʻana i ka lole, ke kūpaʻa ʻana a i ʻole ka conductivity o nā mea. Hana ʻia ka pahu valve, hoʻopili a me ka noho i ka graphite.
Graphite o kiʻekiʻe hehee ai wahi, i 3000 ¡æ ma lalo o ka hakahaka mea e hoʻomaka e hoopalupalu i ka hoohehee moku'āina, graphite evaporated sublimation i 3600 ¡æ, ka mea maʻamau ma lalo o ke kiʻekiʻe wela ikaika emi malie, oiai ka graphite i ka wela i 2000 ¡æ, ʻo kona ikaika ka wela maʻamau pālua ma kahi, akā ua hoʻonui mālie ʻia ka ʻokoʻa o ke kūpaʻa oxidation o ka graphite oxidation rate me ka mahana.
He kiʻekiʻe loa ka conductivity thermal a me ka conductivity uila o ka graphite, ʻo kona conductivity he 4 mau manawa kiʻekiʻe ma mua o ke kila kila, 2 mau manawa kiʻekiʻe ma mua o ke kila kalapona, 100 mau manawa kiʻekiʻe ma mua o ka metala maʻamau. Kona thermal conductivity, 'aʻole wale oi ma mua o kila, hao, alakai a me na mea metala mea, akā, me ka mahana hoʻonui i ka thermal conductivity emi, i okoa mai ka maʻamau metala mea, ma kiʻekiʻe loa wela, graphite a hiki i ka adiabatic moku'āina. No laila, ma lalo o nā kūlana wela ultra-kiʻekiʻe, hilinaʻi loa ka hana insulation graphite. Graphite i maikai lubricity a me ka plasticity, graphite friction coefficient mea emi ma mua o 0.1, graphite hiki ke hoʻomohala i permeable malamalama pepa, i loko o ka papa mua o ka graphite paakiki he nui loa, me ka daimana mea paʻakikī e hana. Loaʻa i ka graphite ke kūpaʻa kemika, ka pale ʻana i ka waika, ke kūpaʻa alkali, ke kūʻē ʻana i ka corrosion solvents organik. Ma muli o nā waiwai maikaʻi o ka graphite ma luna nei, ʻoi aku ka maikaʻi o ka hoʻohana ʻana i nā ʻoihana hou.
ʻO ke ʻano hoʻohui ma waena o ka mea hana uila a me kēlā me kēia valve
Hoʻohālikelike ʻia ka mea hoʻokele uila me ka valve, i hoʻohana ʻia i ka ʻōnaehana hoʻokele aunoa. Nui nā ʻano mea hana uila, ʻokoʻa ke ʻano o ka hana. No ka laʻana, ʻo ka mea hoʻoheheʻe uila ka angular stroke ʻo ia ka puka makani angular torque, aʻo ka mea hoʻoheheʻe uila pololei ʻo ia ka hoʻoneʻe ʻana o ka puka. Pono e koho ʻia ke ʻano o ka mea hana uila i ka noi ʻōnaehana e like me nā pono hana o ka valve.
ʻO ke ala pili
I. Hoʻohui Flange:
ʻO kēia ke ʻano maʻamau o ka pilina i hoʻohana ʻia i nā valves. Ma muli o ke ʻano o ka ʻili hui, hiki ke hoʻokaʻawale ʻia i kēia mau mea:
1. ʻAno maʻemaʻe: hoʻohana ʻia no nā kiwi me ka haʻahaʻa haʻahaʻa. Hana maʻalahi
2, concave a me convex type: kiʻekiʻe kiʻekiʻe hana kaomi, hiki ke hoʻohana 'ia i loko o ka paʻakikī holoi
3. ʻO Tenon a me ke ʻano ʻano: hiki ke hoʻohana ʻia ka gasket me ka nui o ka plastic deformation i nā media corrosive, a ʻoi aku ka maikaʻi o ka hopena sealing.
4, trapezoidal groove type: me ka oval metala apo e like me ka mea holoi, hoʻohana 'ia ma ka hana kaomi o 64 kg/cm2 valve, a kiʻekiʻe wela kiwikā.
5, ʻano lens: ʻo ka mea holoi he ʻano lens, i hana ʻia me ka metala. No nā VALVE PRESSURE kiʻekiʻe ME KA PRESSURE HANA O 100 kg/CM2, a i ʻole nā ​​kiʻekiʻe wela wela.
6, ʻO ke ʻano o ke apo: He ʻano pili flange hou kēia, ua hoʻomohala ʻia me ke ʻano o nā ʻano like ʻole o ka pahu O ring, aia ia i ka hopena sealing o ke ʻano pili.
ʻElua, pili kaula:
He ala hoʻohui maʻalahi kēia a hoʻohana pinepine ʻia me nā valve liʻiliʻi. ʻElua mau hihia hou aʻe:
1, hoʻopaʻa pololei: hoʻokani pono nā kaula i loko a me waho i ke kuleana o ke sila. I mea e hōʻoiaʻiʻo ai ʻaʻole leak ka hui, pinepine me ka aila kepau, linoleum a me PTFE maka mea i hoʻopiha ʻia; Ptfe raw material belt, ka hoʻohana ʻana i ka hoʻonui kaulana; He maikaʻi ke kūpaʻa corrosion o kēia mea, ka hopena sealing, maʻalahi e hoʻohana a mālama, wehe ʻia, hiki ke hoʻopau loa ʻia, no ka mea, he kiʻi ʻoniʻoni ʻole, ʻoi aku ka maikaʻi ma mua o ka ʻaila alakaʻi, linoleum.
2. Hoʻopaʻa ʻole ʻia: hoʻololi ʻia ka ikaika o ka hoʻopaʻa ʻana i ka wili i ka mea holoi ma waena o nā mokulele ʻelua, no laila e hoʻokani ka mea holoi i ka hana sila.
ʻEkolu, pili lima kāleka:
ʻO ke kumu o ka pilina a me ka sila ʻana o ka lima paʻa, ʻo ia ke hoʻopaʻa ʻia ka nati, ke kaomi ʻana i ka lima lima, no laila e nahu kona lihi i ka paia o waho o ka paipu, a kokoke ka cone waho i ka cone kino hui. ma lalo o ke kaomi, no laila hiki iā ia ke pale pono i ka leakage.
ʻO nā mea maikaʻi o kēia ʻano pili:
1, liʻiliʻi liʻiliʻi, kaumaha māmā, hana maʻalahi, wehe maʻalahi;
2, pili ikaika, ākea o ka hoʻohana ʻana, hiki ke kū i ke kaomi kiʻekiʻe (1000 kg / cm2), ka wela kiʻekiʻe (650¡æ) a me ka haʻalulu haʻalulu
3, hiki ke koho i nā ʻano mea like ʻole, kūpono no ka pale ʻana i ka corrosion;
4, ʻaʻole kiʻekiʻe nā koi pololei machining; Maʻalahi e hoʻouka ma kahi kiʻekiʻe.
Ua hoʻohana ʻia ke ʻano hoʻopili lima lima ma kekahi mau huahana valve liʻiliʻi ma Kina.
ʻEhā, pili pili:
HE KANAWAI HOOPII WIWAKI keia e makemake ana i elua wale no BOLTS A KUPONO NO NA VALVE PRESSURE haahaa i wehe pinepine ia.
ʻElima, pili hoʻopaʻa pono i loko:
Ma luna o nā ʻano ʻano pili like ʻole, ʻo ia ka hoʻohana ʻana i ka ikaika o waho e hoʻopau i ke kaomi o ka medium, e hoʻokō ai i ka sila. Hōʻike ka mea ma lalo nei i ke ʻano o ka pilina paʻa ponoʻī me ka hoʻohana ʻana i ke kaomi waena. Hoʻokomo ʻia kona apo hoʻopaʻa i loko o ka cone i loko, me ka ʻaoʻao ʻaoʻao ʻē aʻe i kekahi Angle, kaomi maʻamau i ka cone i loko, a hoʻoneʻe ʻia i ke apo hoʻopaʻa, ma kekahi Angle o ka ʻili cone, hana ʻelua ʻāpana, hoʻokahi like me ka laina waena o ke kino kiwi i waho, ʻo ke kaomi ʻē aʻe i ka paia o loko o ke kino valve. ʻO ka ʻāpana hope ka ikaika hoʻopaʻa ponoʻī. ʻO ka ʻoi aku ka nui o ke kaomi waena, ʻoi aku ka nui o ka ikaika paʻa ponoʻī. No laila ua kūpono kēia ʻano pilina no nā valve kiʻekiʻe. Hoʻopakele ia i ka nui o nā mea a me ka hana ma mua o ka pili flanged, akā pono nō hoʻi i kahi nui o ka preload, no laila ʻaʻole kiʻekiʻe ke kaomi i ka valve, hoʻohana pono. ʻO ka valve i hana ʻia me ke kumu o ka hoʻopaʻa paʻa paʻa ponoʻī ʻo ia ka valve kiʻekiʻe.
Nui nā ʻano o ka pili valve, no ka laʻana, ʻaʻole pono kekahi e wehe i ka valve liʻiliʻi, i hui pū ʻia me ka paipu; ʻO kekahi mau kīwī non-metallic, me ka hoʻohana ʻana i ka pilina socket, a pēlā aku. Pono e mālama ʻia nā mea hoʻohana Valve e like me nā kūlana kikoʻī.