Introduction to Bellow Sealed valves

Malalo(s) Seal(ed) Valves

ʻO ka leaka ma nā wahi like ʻole o nā paipu i loaʻa i nā mea kanu kemika e hana i nā emissions. Hiki ke ʻike ʻia kēlā mau wahi leakage me ka hoʻohana ʻana i nā ʻano hana like ʻole a pono e ʻike ʻia e ka ʻenekini mea kanu. ʻO nā wahi leakage koʻikoʻi e pili ana i nā hui kīwī flanged a me ka Valve / pump gland packing, a me nā mea ʻē aʻe. ka pale ʻana i ka leakage o nā mea ʻona.

Leaka mai ka pahu Valve a i ʻole ka pahu hoʻopihahe mea maʻamau ka hopohopo no ka mālama ʻana a i ʻole ka ʻenekinia mea kanu. ʻO ke ʻano o kēia leakage:
a) Nalo o ka waiwai b) Polusi i ka lewa c) Poino no na limahana mea kanu.

No ka laʻana, e lawe i ka hihia o ka lele ʻana o ka mahu ma o ka ʻili Valve. Ma 150 PSI, ʻo ka ʻae ʻana o 0.001 ″ wale nō ma o ka gland e manaʻo ʻia he leak ma ka wikiwiki o 25 lb / hola. Ua like kēia me ka lilo o USD 1.2 no ka hoʻololi ʻewalu hola, a i ʻole USD 1,100 i kēlā me kēia makahiki. Pēlā nō, ʻo kahi hāʻule liʻiliʻi o 0.4 mm anawaena i kēlā me kēia kekona e hopena i ka pau ʻana o kahi 200 lita o ka makahiki o ka aila kumu kūʻai a i ʻole ka solvent. Hiki ke hoʻemi nui ʻia kēia leakage ma ka hoʻohana ʻana i ka Valve seal bellow. E noʻonoʻo kēia ʻatikala i ke kūkulu ʻana a me ka hana ʻana o ke sila bellow.

Kūkulu ʻia ma lalo

Hoʻopili ʻia ka pahu pahu i ka Valve Bonnet a me ke kumu Valve. He nui nā convolutions o ka pahu pahu a ua hoʻopili ʻia kēia mau convolutions ma muli o ka neʻe ʻana o ke kumu Valve. (Ma ka ʻōlelo ʻepekema, e hoʻopili ʻia ka bellow i ka wā e kū ana ka Valve i ke kūlana ākea a hoʻonui ʻia i ka wā i pani ʻia ka Valve). He mea nui e hoʻokomo pono i nā kino Valve. Hiki ke hoʻopaʻa ʻia ka bellow i nā Valves ma nā ʻano ʻelua. ʻO ka mea mua, hiki ke hoʻopaʻa ʻia ka lalo i ke kumu Valve ma luna a me ke kino Valve ma lalo. I kēia hihia, aia ka wai kaʻina hana i loko o ka bellow a i ʻole ma ke ala ʻelua e hoʻopili ʻia ka bellow i ke kumu Valve ma lalo a me ke kino ma luna. I kēia hihia, aia ka wai kaʻina hana ma ka ʻāpana annular ma waena o ka Valve Bonnet a me ka bellow (mai waho).

He mea koʻikoʻi ka bellow a hoʻokumu i ka puʻuwai o ka bellow seal Valves. I mea e pale aku ai i ka wili ʻana o ka lalo, pono e loaʻa i ka Valve ke kumu me ka laina laina wale nō. Hiki ke hoʻokō ʻia kēia me ka hoʻohana ʻana i kahi mea i kapa ʻia ʻo ka lima-nut ma ka ʻāpana Yoke o ka Valve Bonnet. Hoʻokomo ʻia kahi huila lima ma luna o ka puʻupuʻu lima e hoʻololi pono i ka neʻe ʻana o ka huila lima i kahi neʻe laina i loko o ke kumu Valve.

Nā ʻano ma lalo

ʻElua ʻano nui o ka bellow: ka Forged Bellow a me ka Welded Bellow. Hana ʻia nā bellow i hana ʻia mai ka ʻōwili ʻia ʻana o kahi pepa paʻa (pepa paia lahilahi) i loko o kahi paipu a laila wili ʻia me ka longitudinally. Hoʻokumu ʻia kēia paipu i ka mechanically a i ʻole hydrostatically i hoʻoheheʻe ʻia me nā pōʻai a ākea ākea. Hana ʻia ke ʻano lau i hoʻopaʻa ʻia ma ka wiliwili ʻana i nā pā e like me ka mea holoi holoi me ka metala lahilahi i hui pū ʻia ma ka ʻāpana o loko a me waho o nā mea holoi - e like me nā papa. ʻOi aku ka nui o nā pelu o ka lau i hoʻoheheʻe ʻia ma ka lōʻihi o ka lōʻihi ma mua o ka bellows forged. No laila, no ka lōʻihi like, ʻelua a ʻekolu manawa ka lōʻihi o nā bellow i hoʻopaʻa ʻia ma mua o ko lākou mau lau lau.

Ua hōʻike ʻia, hāʻule ka bellow i hana ʻia me ka mechanically ma nā wahi kikoʻī, ʻoiai ʻo ka lau welded maʻamau e hāʻule ma kahi a kokoke paha i kahi weld. No ka hōʻoia ʻana i ke komo piha ʻana o nā welau o lalo a me ka welding coller hope, pono e hana ʻia me ka hoʻohana ʻana i ka wili plasma micro.

Hoʻolālā ma lalo

ʻOi aku ka maikaʻi o ka hoʻolālā multi-ply bellow no ka lawelawe ʻana i nā wai kaomi kiʻekiʻe (maʻa mau ʻelua a ʻekolu paha pā o ka pā metala). Hiki ke hoʻonui ʻia ka helu kaomi ʻelua ma ka 80% a hiki i ka 100% ke hoʻohālikelike ʻia me hoʻokahi ply bellow o ka mānoanoa like. ʻO kahi ʻē aʻe, inā hoʻohana ʻia kahi ʻāpana o ka mānoanoa e like me ka helu kaomi o kahi ʻāpana ʻelua, ua hoʻemi ʻia ka lōʻihi o ka hahau ʻana. No laila, hāʻawi ka hoʻolālā multi-ply bellow i kahi pono kūʻokoʻa ma mua o hoʻokahi ply bellow. He mea maopopo loa ua pili ka bellow i ka luhi metala a hiki i kēia luhi ke hoʻoulu i ka hana weld. Hoʻopili ʻia ke ola luhi o lalo e ka mea hana, ka ʻenehana hana, ka lōʻihi o ka hahau ʻana a me ka pinepine o ka hahau ʻana, ma kahi o nā ʻāpana maʻamau e like me ka mahana o ka wai a me ke kaomi.

Nā mea ma lalo

ʻO AISI 316Ti ke kila kila kila kaulana loa i loko o ka Titanium e kū i nā wela kiʻekiʻe. ʻO kahi ʻē aʻe, ʻo Inconel 600 a i ʻole Inconel 625 e hoʻomaikaʻi i ka ikaika luhi a me ka pale ʻana i ka corrosion i hoʻohālikelike ʻia me nā bellow stainless steel. Pēlā nō, hāʻawi ʻo Hastalloy C-276 i ka ʻoi aku ka ikaika o ka corrosion a me ka ikaika luhi ma mua o Inconel 625. Hiki ke hoʻomaikaʻi ʻia ke kūpaʻa luhi ma ka hoʻohana ʻana i kahi ʻōnaehana multiply bellows a hoʻemi i ka lōʻihi o ka hahau ʻana; hiki i kēia ke hoʻonui nui i ke ola lawelawe bellow.

Nā koho valve

ʻO nā ʻano Valve maʻamau e hoʻokomo ʻia me nā sila bellow, ʻo ia ka ʻīpuka a me nā hoʻolālā honua (e nānā i ke Kiʻi 1). He kūpono loa kēia no ka hoʻohana ʻana me nā bellows ma muli o kā lākou hana kūloko a me ka neʻe axial o ke kumu Valve.
Ma muli o ka ʻike i loaʻa, ʻike ʻia ke ʻano o ka nui o nā Valves bellow seal i kēia manawa mai 3 mm NB a i 650 mm NB. Loaʻa nā helu kaomi mai ANSI 150# a i 2500#. Loaʻa nā koho waiwai no nā Valves i ke kila kalapona, ke kila kila a me nā mea hoʻohui exotic.

Nā noi

Heat Transfer Media: Hoʻohana maʻamau ka ʻaila wela i nā ʻoihana e like me nā fiber synthetic / POY (Partially Oriented Yarn). Eia nō naʻe, loaʻa mau ka pilikia o ke ahi ma muli o ke kahe ʻana o ka aila wela ma luna o nā kemika inflammable loa. Ma ʻaneʻi, hiki i nā Valves seal ma lalo ke hoʻōki i ka leakage.

Māmā / ʻūhā kiʻekiʻe loa: koi kekahi mau noi i kahi ʻōpala e hoʻomau mau i ka ea mai kahi paipu. Hiki i nā Valve ma'amau i ho'okomo 'ia ma ka pipeline e hiki ke 'ae i ka ea o waho e komo i loko o ka pipeline me ka piha 'ana i ka pahu pahu pahu. No laila ʻo ka bellow seal Valve wale nō ka hopena e pale aku ai i ka ea mai ka hele ʻana i ka pahu meaʻai.
ʻO nā wai ʻino loa: no ka media e like me ka chlorine (e ʻike i ke Kiʻi 2), hydrogen, ammonia a me phosgene, ʻo ka bellow seal Valve kahi hoʻolālā kūpono no ka mea ua hoʻopau loa ʻia ka leakage ma ka ʻili.
Mea kanu nuklea, mea kanu wai kaumaha: i nā manawa e pale ʻia ai ka lele ʻana o ka radiation i nā manawa a pau, ʻo ka bellow seal Valve ka koho hope loa.
ʻO nā wai kūʻai nui: ma kekahi mau noi pono e pale ʻia nā leaks ma muli o ke kumukūʻai kiʻekiʻe o ka wai. Maʻaneʻi, makemake pinepine ka loiloi waiwai i ka hoʻohana ʻana i nā Valves seal bellow.
Nā kūlana kaiapuni: ma ke ao holoʻokoʻa, ʻoi aku ka paʻakikī o nā kūlana e pili ana i ka hoʻokuʻu ʻana a me ke kaiapuni i kēlā me kēia lā. No laila hiki ke paʻakikī i nā ʻoihana e hoʻonui i loko o nā wahi e kū nei. Me ka hoʻohana ʻana i nā Valves seal bellow, hoʻonui me ka ʻole o ke kaiapuni
hiki ke poino.