Kgokelo e nang le diphanele ke mmele wa valve o nang le diphanele mahlakoreng ka bobedi, tse tsamaellanang le diphanele tse hodima phaephe, ka ho kenya flange e kentsweng ka hara phaephe. Kgokelo e nang le diphanele ke mofuta o sebediswang haholo wa kgokelo ya valve. Diphanele di na le convex (RF), plane (FF), convex le concave (MF) le dintlha tse ding. Ho ya ka sebopeho sa bokahodimo ba manonyeletso, e ka arolwa ka mefuta e latelang:
(1) mofuta o boreleli: bakeng sa valve e nang le khatello e tlase. Ho sebetsa ho bonolo haholoanyane;
(2) mofuta o kobehileng le o kobehileng: khatello e phahameng ea ho sebetsa, e ka sebelisa gasket e thata;
(3) mofuta oa mokoti oa tenon: gasket e nang le phetoho e kholo ea polasetiki e ka sebelisoa haholo mecheng ea litaba e senyang, 'me phello ea ho koala e betere;
(4) mofuta oa mokoti oa trapezoidal: lesale la tšepe le oval e le gasket, le sebelisoang khatellong ea ho sebetsa ea valve ≥64 kg/cm2, kapa valve ea mocheso o phahameng;
(5) Mofuta oa lense: gasket e ka sebopeho sa lense, e entsoeng ka tšepe. E sebelisoa bakeng sa li-valve tsa khatello e phahameng tse nang le khatello e sebetsang ea ≥ 100kg/cm2, kapa li-valve tsa mocheso o phahameng;
(6) Mofuta oa lesale la O: ena ke mofuta o mocha oa khokahano ea flange, ke ka ho hlaha ha mefuta eohle ea lesale la O la rabara, 'me le ntlafalitsoe, le tšepahala haholoanyane phellong ea ho koala ho feta gasket e bataletseng e akaretsang.
(1) Kgokelo ya ho tjheseletsa marago: dipheletso ka bobedi tsa mmele wa valve di sebetswa ka hara mokoti wa ho tjheseletsa marago ho ya ka ditlhoko tsa ho tjheseletsa marago, tse tsamaellanang le mokoti wa ho tjheseletsa phaephe, mme di kentswe hodima phaephe ka ho tjheseletsa.
(2) khokahano ea ho tjheseletsa li-socket: lipheletso ka bobeli tsa 'mele oa valve li sebetsoa ho latela litlhoko tsa ho tjheseletsa li-socket 'me li hokahantsoe le phaephe ka ho tjheseletsa li-socket.
Kgokelo e nang le khoele ke mokhoa o bonolo oa ho hokahanya 'me hangata o sebelisoa bakeng sa li-valve tse nyane. 'Mele oa valve o sebetsoa ho latela khoele e tloaelehileng, 'me ho na le mefuta e 'meli ea khoele ea kahare le khoele ea kantle. E tsamaellanang le khoele e holim'a phaephe. Kgokelo e nang le khoele e arotsoe ka maemo a mabeli:
(1) ho tiisa ka ho toba: likhoele tsa ka hare le tsa kantle li bapala karolo ea ho tiisa ka kotloloho. E le ho netefatsa hore lenonyello ha le lutle, hangata ka oli ea loto, hemp le lebanta la ho tlatsa thepa e tala ea PTFE; Har'a tsona, lebanta la thepa e tala ea PTFE le sebelisoa haholo. Thepa ena e na le khanyetso e ntle ea mafome, phello e ntle ea ho tiisa, e bonolo ho e sebelisa le ho e boloka, ha e qhaqhoa, e ka tlosoa ka ho feletseng, hobane ke lera la filimi e sa viscous, e betere haholo ho feta oli ea loto, hemp.
(2) ho tiisa ka tsela e sa tobang: matla a ho tiisa dikurufu a fetisetswa ho gasket pakeng tsa difofane tse pedi, e le hore gasket e bapale karolo ya ho tiisa.
Ho na le mefuta e mehlano ea likhoele tse sebelisoang haholo:
(1) Khoele e tloaelehileng ea metric;
(2) Khoele e tšoanang ea lisenthimithara;
(3) Khoele ea phaephe e koalang khoele;
(4) khoele ea phaephe ea ho koala e sa koaheloang;
(5) Likhoele tsa phaephe tse tloaelehileng tsa Amerika.
Selelekela se akaretsang ke se latelang:
① Tekanyetso ea machaba ea ISO228/1, DIN259, bakeng sa khoele e bapileng ea kahare le kantle, khoutu G kapa PF(BSP.F);
② Sejeremane se tloaelehileng ISO7/1, DIN2999, BS21, bakeng sa khoune ea leino le ka ntle, khoele e bapileng ea leino le ka hare, khoutu ea BSP.P kapa RP/PS;
③ Standard ea Brithani ISO7/1, BS21, khoele ea taper ea kahare le kantle, khoutu ea PT kapa BSP.TR kapa RC;
④ ANSI B21 e tloaelehileng ea Amerika, khoele ea taper ea kahare le kantle, khoutu ea NPT G(PF), RP(PS), RC (PT) tooth Angle ke 55°, NPT tooth Angle ke 60°BSP.F, BSP.P le BSP.TR ka kakaretso li bitsoa meno a BSP.
Ho na le mefuta e mehlano ea likhoele tse tloaelehileng tsa liphaephe United States: NPT bakeng sa tšebeliso e akaretsang, NPSC bakeng sa likhoele tsa liphaephe tse otlolohileng tsa ka hare bakeng sa li-fittings, NPTR bakeng sa likhoele tsa lithupa tse tataisang, NPSM bakeng sa likhoele tsa liphaephe tse otlolohileng bakeng sa likhoele tsa mechini (likhoele tsa mechini tse loketseng mahala), le NPSL bakeng sa likhoele tsa mechini tse loketseng tse lokolohileng tse nang le linate tse notlelang. Ke ea khoele ea liphaephe tse koetsoeng tse sa koaheloang (N: tekanyetso ea naha ea Amerika; P: phaephe; T: Taper)
4. Khokahano ea Taper
Molao-motheo oa khokahano le ho tiisa oa sleeve ke hore ha nate e tiisitsoe, sleeve e tlas'a khatello, e le hore moeli o kene leboteng le ka ntle la phaephe, 'me khoune e ka ntle ea sleeve e koetsoe ka thata ka khoune ea 'mele o kopantsoeng tlas'a khatello, kahoo e ka thibela ho lutla ka mokhoa o tšepahalang. Joalo kali-valve tsa lisebelisoa.Melemo ea mofuta ona oa khokahano ke:
(1) Bophahamo bo bonyenyane, boima bo bobebe, sebopeho se bonolo, ho qhaqha le ho kopanya habonolo;
(2) relay e matla, e sebelisoang ka mefuta e mengata, e ka mamella khatello e phahameng (1000 kg/sekwere sa sentimitara), mocheso o phahameng (650℃) le ho thothomela ha matla;
(3) e ka khetha mefuta e fapaneng ea thepa, e loketseng thibelo ea ts'enyeho;
(4) ho nepahala ha mechini ha ho hodimo;
(5) ho bonolo ho e kenya sebakeng se phahameng.
5. Khokahano ea clamp
Ke mokhoa oa ho hokela ka potlako o hlokang liboutu tse peli feela 'me o loketse li-valve tse nang le khatello e tlase tse atisang ho tlosoa.
Nako ea poso: Hlakola-22-2022