Ukukhetha ibhabhathane: Ungayikhetha njani phakathi kwetywina elithambileyo kunye netywina elinzima?

Ibhotile yebhabhathaneUkukhetha: Ungayikhetha njani phakathi kwetywina elithambileyo kunye netywina elinzima?

Ekukhetheni kweevalve zebhabhathane, ukhetho phakathi kwebhabhathane lebhabhathane elithambileyo elitywiniweyo kunye neevalvery zebhabhathane ezinamagqabi ngokuthe ngqo kuchaphazela ngokuthe ngqo intsebenzo yokutywina kwenkqubo, inkonzo, kunye neendleko. Umahluko ophambili phakathi kobu buxoki bobabini kwizinto zokutywina kunye nemeko esebenzayo, ekufuneka igwetyelwe ngokupheleleyo kwimiba emithathu: iimpawu eziphakathi, iqondo lobushushu, kunye nokuvula nokuvula nokuvula nokuvula rhoqo.

Ipeyinti yokutywina ithayileI-Butterfly ValvesRhoqo usebenzisa irabha (njenge-nitrile irabha, irabha ye-EPDM) okanye i-fluoroplastic (efana ne-ptfe), eneengenelo ze-PTFE Xa i-Medium inamanzi acocekileyo kwigumbi, igesi okanye irhasi ebuthathaka (njengokujikeleza kwamanzi), kwaye iveraphu yebhabhathane ethambileyo inokuthi ifezekise imigangatho yokutywina kwe-bible eqinileyo (njengokuthintela imibhobho yokubonelela ngamanzi, ukwenziwa kwamanzi, ukulungiswa kokutya). Nangona kunjalo, kufuneka kuqatshelwe ukuba umda ongaphezulu wokunganyangeki kobushushu kwirabha idla-120 ℃, kunye ne-fluoroplastics i-180 ℃. Ukugqitha kolu luhlu kunokubangela ukuba umhlaba wokutywina uye wenza nzima okanye usebenze, ukhokelela ekuvusweni.

I-vallybly eqinileyo yebhabhathane ifikelela kubushushu obuphezulu kunye nokunganyakelwa koxinzelelo oluphezulu ngentsimbi (efana nentsimbi engenasitayile, i-hard afty) ukuya kwisinyithi okanye ngesinyithi kwizibini ze-ceramic. Kwimeko yokusebenza ye-Steam, ioyile ye-thermal, igesi ephezulu yeqondo lobushushu (njenge-300 ℃) okanye imithombo yeendaba etywiniweyo yetywina elinamandla etywina. Umzekelo, iivalves ezimbini ezinamabhabhathane ezi-Eccentric zisetyenziswa rhoqo kwimibhobho ye-Boiler kwimveliso yamandla. Ulwakhiwo lwabo lwe-eccentric lunokunciphisa ukungqubana komgangatho wokutywina, ngelixa ulinganisa ukumelana kobushushu kunye nokuvula nokuvula ubutshintsho.

Zimbini izinto eziphosakeleyo eziphosakeleyo ukuba zazise xa ukhetha imveliso: Okokuqala, umntu akufuneki asukele ngamatywina anzima. Ukuba akukho maqondo amathanga aphakamileyo amaqondo aphezulu kwiphakathi, iindleko eziphezulu kunye nokuvula okukhulu kunye nokuvulwa okukhulu kunye nokuvala amandla okuvala amabhabhathane ezitywiniweyo zibe ziinqambisi; Okwesibini, i-valvery yebhabhathane ethambileyo Ngokuthambisa i-valve kunye nokomeleza uyilo lokutywina, ezinye izinto ezithambileyo zebhabhathane zinokumelana nengcinezelo ye-2.5MPA, kodwa iqinisekisiwe ngomenzi, ukuba kufuneka uqinisekiswe ngomenzi.

ISIQINISEKISO: ItywiniweI-Butterfly Valvesbakhetha ukuba amaqondo obushushu egumbi ukucoca imithombo yeendaba, ngelixa i-valves yebhabhathane etywiniweyo ikhethwa ukuba amaqumrhu amaqondo obushushu aphezulu; Ukuba iimeko zokusebenza ziphakathi kwezi zimbini (njengamanzi ashushu nge-150 ℃), ivalve enebhabhathane enomthi wokutsalwa nge-ceraramic okanye i-welding ene-hard alloy inokuqwalaselwa ukuze ilingane nexabiso lokusebenza kunye neendleko.