Ngaphambi kokuba kufakwe ivalve, uvavanyo lwamandla evalve kunye novavanyo lokutywina kufuneka lwenziwe kwibhentshi yovavanyo yevalve hydraulic. I-20% ye-valve ye-low-pressure valves kufuneka ihlolwe ngokungaqhelekanga, kwaye i-100% kufuneka ihlolwe ukuba ayinakufaneleka; I-100% ye-valve ephakathi kunye nephezulu yoxinzelelo kufuneka ihlolwe. Imithombo yeendaba edla ngokusetyenziswa kuvavanyo loxinzelelo lwevalvu ngamanzi, i-oyile, umoya, umphunga, initrogen, njalo njalo.
Indlela yokuvavanya uxinzelelo lwevalve yebhabhathane
Uvavanyo lwamandla evalve yebhabhathane yepneumatic luyafana nolwevalve yeglowubhu. Ekuvavanyeni kokutywinwa kokusebenza kwevalve yebhabhathane, i-medium yovavanyo kufuneka iqaliswe ukusuka kwi-flow end of medium, i-butterfly plate kufuneka ivulwe, enye isiphelo kufuneka ivalwe, kwaye uxinzelelo lwenaliti kufuneka lufikelele kwixabiso elichaziweyo; emva kokukhangela ukuba akukho kuvuza kwipakethe kunye nezinye izitywina, vala ipleyiti yebhabhathane, uvule kwelinye icala, kwaye ujonge ivalve yebhabhathane. Akukho kuvuza kwi-plate seal kufanelekile. Ivalve yebhabhathane esetyenziselwa ukulawula ukuhambahamba ayinakuvavanywa ukusebenza kokutywinwa.
Indlela yokuvavanya uxinzelelo lwevalve yokukhangela
Hlola imeko yovavanyo lwevalve: i-axis ye-disc yevalve yokukhangela i-disc ikwindawo ethe tye ukuya kwindawo ethe tye; i-axis yeshaneli yevalve yokukhangela i-swing kunye ne-disc axis zikwimeko ephantse ingqamene nomgca othe tye.
Ngethuba lovavanyo lwamandla, i-medium yokuvavanya ifakwe kwi-inlet ukuya kwixabiso elichaziweyo, kwaye enye isiphelo ivaliwe, kwaye ifanelekile ukubona ukuba umzimba we-valve kunye ne-valve cover ayinakho ukuvuza.
Kuvavanyo lokutywinwa, uvavanyo oluphakathi luyaziswa ukusuka ekupheleni kokuphuma, kwaye umphezulu wokutywina ujongiwe ekupheleni kokungena, kwaye akukho kuvuza kwipakethi kunye ne-gasket ifanelekile.
Indlela yokuvavanya uxinzelelo lwevalve yesango
Uvavanyo lwamandla evalve yesango luyafana nolo lwevalve yeglowubhu. Kukho iindlela ezimbini zovavanyo lokuqina kwevalve yesango.
①Vula isango ukwenza uxinzelelo kwi-valve lukhuphuke kwixabiso elichaziweyo; emva koko uvale isango, ukhuphe ivalve yesango ngokukhawuleza, khangela ukuba kukho ukuvuza kwezitywina kumacala omabini esango, okanye ugalele ngokuthe ngqo isixhobo sovavanyo kwiplagi ekwisigqubuthelo sevalvu kwixabiso elikhankanyiweyo, khangela izitywini kuzo zombini. amacala esango. Le ndlela ingentla ibizwa ngokuba luvavanyo loxinzelelo oluphakathi. Le ndlela akufuneki isetyenziselwe iimvavanyo zokutywina kwiivalvu zesango ezinobukhulu obuncinci ngaphantsi kwe-DN32mm.
②Enye indlela kukuvula isango ukwenza uxinzelelo lwevalve lunyukele kwixabiso elichaziweyo; uze uvale isango, uvule icala elinye lepleyiti eyimfama, kwaye ujonge ukuba indawo yokutywina iyavuza na. Emva koko jikela umva kwaye uluphinde olu vavanyo lungentla lude lube lufanelekile.
Uvavanyo lokuqina lokupakisha kunye ne-gasket ye-valve yesango ye-pneumatic iya kuqhutywa phambi kovavanyo lokuqina kwesango.
Indlela yokuvavanya uxinzelelo lwevalve yokunciphisa uxinzelelo
①Uvavanyo lwamandla lwevalve yokunciphisa uxinzelelo luhlanganiswe ngokubanzi emva kovavanyo lweqhekeza elinye, kwaye lunokuvavanywa emva kokuhlangana. Ubude bexesha lovavanyo lwamandla: 1min ye-DN<50mm; ngaphezu kwe-2min ye-DN65～150mm; ngaphezu kwe-3min ye-DN> 150mm.
Emva kokuba i-bellows kunye namacandelo adibeneyo, sebenzisa amaxesha angama-1.5 uxinzelelo oluphezulu lwe-valve yokunciphisa uxinzelelo, kwaye uqhube uvavanyo lwamandla ngomoya.
②Uvavanyo lokungangeni moya luya kwenziwa ngokweyona ndlela yokusebenza. Xa uvavanya ngomoya okanye ngamanzi, vavanya ngamaxesha e-1.1 uxinzelelo lwegama; xa uvavanya nge-steam, sebenzisa uxinzelelo oluphezulu lokusebenza oluvunyelwe phantsi kobushushu bokusebenza. Umahluko phakathi koxinzelelo lokungena kunye noxinzelelo lokuphuma kufuneka ungabi ngaphantsi kwe-0.2MPa. Indlela yokuvavanya: emva kokuba uxinzelelo lwe-inlet luhlengahlengiswe, ngokuthe ngcembe ulungelelanise i-screw yokulungelelanisa i-valve, ukwenzela ukuba uxinzelelo lwe-outlet lutshintshe ngokukhawuleza kwaye ngokuqhubekayo ngaphakathi koluhlu lwamanani aphezulu kunye nobuncinci, ngaphandle kokuphazamiseka okanye ukuxubha. Kwi-valve yokunciphisa uxinzelelo lwe-steam, xa uxinzelelo lwe-inlet luhlengahlengiswa kude, i-valve ivaliwe emva kokuba i-valve ivaliwe, kwaye uxinzelelo lwe-outlet luphezulu kunye nexabiso eliphantsi. Ngaphakathi kwe-2min, ukunyuka kwengcinezelo yokuphuma kufuneka kuhlangabezane neemfuno kwiThebhile 4.176-22. Ngexesha elifanayo, umbhobho emva kwevalve kufuneka ube Umthamo uhambelana neemfuno kwiThebhile 4.18 ukuba ifaneleke; kumanzi kunye neevalve zokunciphisa uxinzelelo lomoya, xa uxinzelelo lwe-inlet lubekwe kwaye uxinzelelo lwe-outlet luyi-zero, i-valve yokunciphisa i-valve ivaliwe kuvavanyo lokuqina, kwaye akukho kuvuza ngaphakathi kwemizuzu emi-2 ifanelekile.
Indlela yovavanyo loxinzelelo lwevalve yeglowubhu kunye nevalve ye-throttle
Kuvavanyo lwamandla evalve yeglowubhu kunye nevalve ye-throttle, ivalve edityanisiweyo ihlala ibekwe kwisakhelo sovavanyo loxinzelelo, idiski yevalve iyavulwa, i-medium itofelwe kwixabiso elichaziweyo, kunye nomzimba wevalve kunye nesivalo sevalve zikhangelwa ukubila kwaye ukuvuza. Uvavanyo lwamandla lunokwenziwa nakwiqhekeza elinye. Uvavanyo lokuqina lolwevalve yokuvala kuphela. Ngethuba lovavanyo, i-valve stem ye-valve ye-globe ikwimeko ethe nkqo, i-disc ye-valve ivuliwe, i-medium yaziswa ukusuka ekupheleni kwe-disc ye-valve ukuya kwixabiso elichaziweyo, kwaye ukupakishwa kunye ne-gasket zihlolwe; emva kokuphumelela uvavanyo, i-disc ye-valve ivaliwe, kwaye enye isiphelo ivuliwe ukujonga ukuba kukho ukuvuza. Ukuba uvavanyo lwamandla kunye nokuqina kwevalve kufuneka lwenziwe, uvavanyo lwamandla lunokwenziwa kuqala, ngoko uxinzelelo luyancitshiswa kwixabiso elichaziweyo lovavanyo lokuqina, kwaye ukupakishwa kunye ne-gasket kuhlolwe; emva koko idiski yevalve ivaliwe, kwaye isiphelo sokuphuma siyavulwa ukujonga ukuba indawo yokutywina iyavuza.
Indlela yokuvavanya uxinzelelo lwevalvu yebhola
Uvavanyo lwamandla evalve yebhola ye-pneumatic kufuneka lwenziwe kwindawo evulekileyo yesiqingatha sevalve yebhola.
①Uvavanyo lokutywinwa kwevalve yebhola edadayo: beka ivalve kwindawo evulekileyo, yazisa indawo yovavanyo kwelinye icala, kwaye uvale elinye icala; ukujikeleza ibhola ngamaxesha amaninzi, vula isiphelo esivaliweyo xa i-valve ikwimeko evaliweyo, kwaye ukhangele ukusebenza kokutywinwa kwi-packing kunye ne-gasket ngexesha elifanayo. Kufuneka kungabikho kuvuza. Uvavanyo oluphakathi luye lwaziswa ukusuka kwelinye icala kwaye uvavanyo olungentla luyaphindwa.
②Uvavanyo lokutywinwa kwe-valve yebhola ehleliweyo: ngaphambi kovavanyo, ujikeleze ibhola ngamaxesha amaninzi ngaphandle komthwalo, i-valve yebhola ehleliweyo ikwimeko evaliweyo, kwaye uvavanyo oluphakathi luqaliswa ukusuka kwelinye icala ukuya kwixabiso elichaziweyo; ukusebenza kokutywinwa kokuphela kwesingeniso kuhlolwe nge-gauge ye-pressure gauge, kwaye ukuchaneka kwe-gauge ye-pressure gauge yi-0 .5 ukuya ku-1, uluhlu luyi-1.6 amaxesha oxinzelelo lovavanyo. Ngexesha elichaziweyo, ukuba akukho nto ye-depressurization, ifanelekile; emva koko yazise i-test medium ukusuka kwelinye icala, kwaye uphinda olu vavanyo lungentla. Emva koko, faka i-valve kwindawo evulekileyo, vala zombini iziphelo, kwaye ugcwalise i-cavity yangaphakathi nge-medium. Khangela ukupakishwa kunye ne-gasket phantsi koxinzelelo lovavanyo, kwaye akufuneki kubekho ukuvuza.
③Ivalve yebhola eneendlela ezintathu iya kuvavanywa ukuqina kwindawo nganye.
Ixesha lokuposa: Mar-02-2022
