Ukuhlolwa phambi kofakelo lwevalvu

① Jonga ngononophelo ukuba imodeli yevalvu kunye neenkcukacha ziyahlangabezana neemfuno zomzobo.

② Jonga ukuba isiqu sevalve kunye nediski yevalvu ziyaguquguquka na ekuvulekeni, nokuba zixingekile okanye zijijekile.

③ Jonga ukuba ivalve yonakele kwaye ukuba imisonto yevalve ephothiweyo ithe tye kwaye ayichanekanga.

④ Jonga ukuba unxibelelwano phakathi kwesitulo sevalve luqinile na, unxibelelwano phakathi kwediski yevalvu kunye nesitulo sevalvu, isigqubuthelo sevalvu kunye nomzimba wevalvu, kunye nesiqu sevalvu kunye nediski yevalvu.

⑤ Khangela ukuba i-valve gasket, ukupakisha kunye ne-fasteners (iibholithi) zifanelekile kwiimfuno zendalo yokusebenza.

⑥ Iivalvu zokunciphisa uxinzelelo ezindala okanye ezishiywe ixesha elide kufuneka ziqhaqheke, kwaye uthuli, isanti kunye nobunye ubugoxo kufuneka bucocwe ngamanzi.

⑦ Susa isiciko sokutywina kwaye ujonge idigri yokutywina. Idiski yevalve kufuneka ivalwe ngokuqinileyo.

Uvavanyo loxinzelelo lwevalve

Izivalo zoxinzelelo olusezantsi, uxinzelelo oluphakathi kunye noxinzelelo oluphezulu kufuneka zenze iimvavanyo zamandla kunye novavanyo lokuqina. Iivalve zensimbi ye-alloy kufuneka kwakhona ziqhube uhlalutyo lwe-spectral kwiigobolondo nganye kwaye zihlolisise izinto.

1. Uvavanyo lwamandla e-valve

Uvavanyo lwamandla evalve kukuvavanya ivalve kwindawo evulekileyo ukujonga ukuvuza kumphezulu ongaphandle wevalve. Kwi-valve ene-PN ≤ 32MPa, uxinzelelo lovavanyo luyi-1.5 ngamaxesha oxinzelelo oluqhelekileyo, ixesha lokuvavanya alikho ngaphantsi kwemizuzu emi-5, kwaye akukho kuvuza kwigobolondo kunye nokupakisha i-gland ukuba ifaneleke.

2. Uvavanyo lokuqina kwevalve

Uvavanyo lwenziwa ivalve ivalwe ngokupheleleyo ukujonga ukuba akukho nto ivuzayo kumphezulu wokutywina. Uxinzelelo lovavanyo, ngaphandle kweevalvu zebhabhathane, iivalve zokujonga, iivalve ezisezantsi kunye neevalvu ze-throttle, kufuneka ziqhutywe ngoxinzelelo oluqhelekileyo. Xa inokumiselwa Ekuxinzezeleni kokusebenza, uvavanyo lunokuthi luqhutywe ngamaxesha e-1.25 yoxinzelelo olusebenzayo, kwaye indawo yokutywinwa yediski ye-valve iya kufaneleka ukuba ayivuzi.

Imithetho ngokubanzi yofakelo lwevalvu

1. Indawo yofakelo lwevalvu akufuneki ithintele ukusebenza, ukuqhaqha kunye nokugcinwa kwezixhobo, iipayipi kunye nomzimba wevalvu ngokwawo, kunye nenkangeleko yobuhle bendibano kufuneka ithathelwe ingqalelo.

2. Kwiivalvu ezikwimibhobho ethe tye, isiqu sevalve kufuneka sifakwe phezulu okanye sifakwe kwi-engile. Musa ukufaka ivalve ngevili lesandla lijonge ezantsi. Iivalvu, izikhondo zevalve kunye namavili esandla kwimibhobho yobude obuphezulu inokufakwa ngokuthe tye, kwaye ikhonkco elithe nkqo kwinqanaba elisezantsi lingasetyenziselwa ukulawula ukude ukuvuleka nokuvalwa kwevalve.

3. Ulungelelwaniso lu-symmetrical, lucocekile kwaye luhle; iivalvu kumbhobho omileyo, ukuba inkqubo iyavuma, i-handwheel yevalve yeyona ifanelekileyo ukuba iqhutywe kumphakamo wesifuba, ngokubanzi i-1.0-1.2m ukusuka emhlabeni, kunye nesiqu sevalve kufuneka silandele ufakelo lwe-Orienteation yomsebenzisi.

4. Iivalve kwimibhobho ethe nkqo ecaleni-ngecala, kungcono ukuba ube nomgangatho ofanayo wokuphakama komgca ophakathi, kwaye umgama ocacileyo phakathi kwamavili ezandla akufanele ube ngaphantsi kwe-100mm; iivalvu ezikwimibhobho ethe tyaba ecaleni-ngecala, kufuneka zigxadazeliswe ukunciphisa umgama phakathi kwemibhobho.

5. Xa ufaka ii-valve ezinzima kwiimpompo zamanzi, i-heater exchangers kunye nezinye izixhobo, iibrakethi ze-valve kufuneka zifakwe; xa iivalve zisebenza rhoqo kwaye zifakwe ngaphezu kwe-1.8m kude nendawo yokusebenza, iqonga elimiselweyo lokusebenza kufuneka lifakwe.

6. Ukuba kukho uphawu lotolo kumzimba wevalvu, icala lotolo licala lokuhamba kwesixhobo. Xa ufaka i-valve, qiniseka ukuba utolo lukhomba kwicala elifanayo kunye nokuhamba kwendawo ephakathi kumbhobho.

7. Xa ufaka i-valve ye-flange, qinisekisa ukuba ubuso bokuphela kwee-flanges ezimbini zihambelana kwaye zigxininise kunye nomnye, kwaye i-gaskets ephindwe kabini ayivumelekanga.

8. Xa ufaka i-valve ene-threaded, ukwenzela ukuba kube lula ukuchithwa, i-valve enentambo kufuneka ixhotyiswe ngomanyano. Ubume bombutho kufuneka buthathele ingqalelo ukulungelwa kwesondlo. Ngokuqhelekileyo, amanzi ahamba ngevalve kuqala aze adlule kwimanyano.

Amanyathelo okhuseleko lofakelo lwevalvu

1. Isixhobo somzimba wevalve ubukhulu becala yintsimbi etyhidiweyo, ene-brittle kwaye akufanelekanga ukuba ibethwe zizinto ezinzima.

2. Xa uthutha ivalve, musa ukuyilahla ngokungacwangciswanga; xa uphakamisa okanye uphakamisa ivalve, intambo kufuneka ibotshelelwe kumzimba wevalve, kwaye inqatshelwe ngokungqongqo ukuyibopha kwi-handwheel, isiqu sevalve kunye nomngxuma webholithi yeflange.

3. I-valve kufuneka ifakwe kwindawo efanelekileyo kakhulu yokusebenza, ukugcinwa kunye nokuhlolwa, kwaye inqatshelwe ngokungqongqo ukuyingcwaba phantsi komhlaba. Iivalve kwimibhobho engcwatywe ngokuthe ngqo okanye kwimisele kufuneka ixhotyiswe ngamaqula okuhlola ukuququzelela ukuvulwa, ukuvala kunye nokulungiswa kweevalve.

4. Qinisekisa ukuba imisonto icocekile kwaye isongelwe nge-hemp, i-oyile ekhokelayo okanye iteyiphu ye-PTFE.