Ngaphambi kokuba ivalvu ifakwe, uvavanyo lwamandla evalvu kunye novavanyo lokutywina ivalvu kufuneka lwenziwe kwibhentshi yovavanyo lwe-hydraulic valve. Ama-20% eevalvu ezinoxinzelelo oluphantsi kufuneka ahlolwe ngokungacwangciswanga, kwaye ama-100% kufuneka ahlolwe ukuba akafanelekanga; ama-100% eevalvu ezinoxinzelelo oluphakathi kunye noluphezulu kufuneka ahlolwe. Izixhobo ezisetyenziswa rhoqo kuvavanyo loxinzelelo lwevalvu ngamanzi, ioyile, umoya, umphunga, initrogen, njl. Iindlela zovavanyo loxinzelelo lweevalvu zoshishino kuquka iivalvu zomoya zezi zilandelayo:
Indlela yokuvavanya uxinzelelo lwevalvu yebhabhathane
Uvavanyo lwamandla evalvu yebhabhathane ephefumulayo lufana nolwevalvu yeglobe. Kuvavanyo lokusebenza kwevalvu yebhabhathane, kufuneka kungeniswe i-medium yovavanyo ukusuka kwisiphelo sokuhamba kwe-medium, ipleyiti yebhabhathane mayivulwe, elinye icala livalwe, kwaye uxinzelelo lwe-injection lufikelele kwixabiso elichaziweyo; emva kokujonga ukuba akukho kuvuza kwindawo yokupakisha nakwezinye izitywino, vala ipleyiti yebhabhathane, vula elinye icala, kwaye ujonge ivalvu yebhabhathane. Akukho kuvuza kwindawo yotywino yepleyiti kuyafaneleka. Ivalvu yebhabhathane esetyenziselwa ukulawula ukuhamba ayinakuvavanywa ukusebenza kwe-itywino.
Indlela yokuvavanya uxinzelelo lwevalvu yokujonga
Imeko yovavanyo lwevalvu yokujonga: i-axis yediski yevalvu yokujonga ilifti ikwindawo ethe nkqo ukuya kwethe tyaba; i-axis yetshaneli yevalvu yokujonga i-swing kunye ne-axis yediski zikwindawo ephantse ilingane nomgca othe tyaba.
Ngexesha lovavanyo lwamandla, i-test medium ingeniswa ukusuka kwindawo yokungena ukuya kwixabiso elichaziweyo, kwaye elinye icala livaliwe, kwaye kufanelekile ukubona ukuba umzimba wevalvu kunye nesigqubuthelo sevalvu azinawo amanzi.
Kuvavanyo lokutywina, i-test medium ifakwa kwisiphelo sokuphuma, kwaye umphezulu wokutywina ujongwa kwisiphelo sokungena, kwaye akukho kuvuza kwindawo yokupakisha kunye ne-gasket kuyafaneleka.
Indlela yokuvavanya uxinzelelo lwevalvu yesango
Uvavanyo lwamandla evalvu yesango lufana nolwevalvu yeglobe. Kukho iindlela ezimbini zovavanyo lokuqina kwevalvu yesango.
①Vula isango ukuze uxinzelelo olukwivalvu lunyuke luye kwixabiso elichaziweyo; uze uvale isango, ukhuphe ivalvu yesango ngoko nangoko, ujonge ukuba kukho ukuvuza kwiitywina kumacala omabini esango, okanye ufake ngqo isixhobo sokuvavanya kwiplagi ekwisigqubuthelo sevalvu ukuya kwixabiso elichaziweyo, ujonge iitywina kumacala omabini esango. Le ndlela ingentla ibizwa ngokuba luvavanyo loxinzelelo oluphakathi. Le ndlela ayifanele isetyenziswe kwiivavanyo zokuvala kwiivalvu zesango ezinobubanzi obungaphantsi kwe-DN32mm.
②Enye indlela kukuvula isango ukuze uxinzelelo lovavanyo lwevalvu lunyuke luye kwixabiso elichaziweyo; emva koko uvale isango, uvule elinye icala lepleyiti engaboniyo, kwaye ujonge ukuba umphezulu wokuvala uyavuza na. Emva koko jika ubuye umva kwaye uphinde uvavanyo olungasentla ude lufaneleke.
Uvavanyo lokuqina kokupakisha kunye ne-gasket yevalvu yesango elinomoya kufuneka lwenziwe ngaphambi kovavanyo lokuqina kwesango.
Indlela yokuvavanya uxinzelelo lwevalvu yokunciphisa uxinzelelo
①Uvavanyo lwamandla lwevalvu yokunciphisa uxinzelelo luhlala luhlanganiswa emva kovavanyo lwenxalenye enye, kwaye lunokuvavanywa emva kokuhlanganiswa. Ubude bovavanyo lwamandla: 1 min kwi-DN<50mm; ngaphezulu kwe-2 min kwi-DN65～150mm; ngaphezulu kwemizuzu emi-3 ye-DN>150mm.
Emva kokuba i-bellows kunye nezinto ezisetyenzisiweyo zidibene, faka uxinzelelo oluphindwe kayi-1.5 lolona luphezulu lwevalvu yokunciphisa uxinzelelo, kwaye wenze uvavanyo lwamandla ngomoya.
②Uvavanyo lokungena komoya kufuneka lwenziwe ngokwendlela yokusebenza yokwenyani. Xa uvavanya ngomoya okanye ngamanzi, vavanya ngokuphindwe kayi-1.1 koxinzelelo oluqhelekileyo; xa uvavanya ngomphunga, sebenzisa uxinzelelo oluphezulu lokusebenza oluvunyelweyo phantsi kobushushu obusebenzayo. Umahluko phakathi koxinzelelo lokungena kunye noxinzelelo lokukhupha kufuneka ungabi ngaphantsi kwe-0.2MPa. Indlela yovavanyo yile: emva kokuba uxinzelelo lokungena luhlengahlengiswe, lungisa kancinci isikrufu sokulungisa sevalvu, ukuze uxinzelelo lokukhupha lutshintshe ngokubonakalayo nangokuqhubekayo ngaphakathi koluhlu lwamaxabiso aphezulu kunye nawona mancinci, ngaphandle kokuma okanye ukuxinana. Kwivalvu yokunciphisa uxinzelelo lomphunga, xa uxinzelelo lokungena luhlengahlengiswa kude, ivalvu ivaliwe emva kokuba ivalvu ivaliwe, kwaye uxinzelelo lokukhupha luxabiso eliphezulu neliphantsi. Ngaphakathi kwemizuzu emi-2, ukunyuka koxinzelelo lokukhupha kufuneka kuhlangabezane neemfuno ezikwiTheyibhile 4.176-22. Kwangaxeshanye, umbhobho ongasemva kwevalvu kufuneka ube. Umthamo uhambelana neemfuno ezikwiTheyibhile 4.18 ukuze ufaneleke; Kwiivalvu zokunciphisa uxinzelelo lwamanzi nomoya, xa uxinzelelo lokungena lumiselwe kwaye uxinzelelo lokuphuma luyi-zero, ivalvu yokunciphisa uxinzelelo ivaliwe ukuze kuvavanywe ukuqina, kwaye akukho kuvuza kungakapheli imizuzu emi-2 kuyafaneleka.
Indlela yokuvavanya uxinzelelo lwevalvu yeglobe kunye nevalvu ye-throttle
Kwivavanyo lwamandla evalvu yeglobhu kunye nevalvu ye-throttle, ivalvu edibeneyo idla ngokufakwa kwisakhelo sovavanyo loxinzelelo, idiski yevalvu iyavulwa, i-medium ifakwe kwixabiso elichaziweyo, kwaye umzimba wevalvu kunye nesigqubuthelo sevalvu ziyajongwa ukubila kunye nokuvuza. Uvavanyo lwamandla lunokwenziwa nakwiqhekeza elinye. Uvavanyo lokuqina lwenzelwe kuphela ivalvu yokuvala. Ngexesha lovavanyo, isiqu sevalvu yevalvu yeglobhu sikwimeko ethe nkqo, idiski yevalvu iyavulwa, i-medium ingeniswa ukusuka kwisiphelo esisezantsi sediski yevalvu ukuya kwixabiso elichaziweyo, kwaye ukupakisha kunye negasket kuyajongwa; emva kokuphumelela uvavanyo, idiski yevalvu iyavalwa, kwaye elinye icala liyavulwa ukujonga ukuba kukho ukuvuza na. Ukuba uvavanyo lwamandla kunye nokuqina kwevalvu luya kwenziwa, uvavanyo lwamandla lungenziwa kuqala, emva koko uxinzelelo luyancitshiswa ukuya kwixabiso elichaziweyo lovavanyo lokuqina, kwaye ukupakisha kunye negasket kuyajongwa; emva koko idiski yevalvu iyavalwa, kwaye isiphelo sokuphuma siyavulwa ukujonga ukuba umphezulu wokutywina uyavuza na.
Indlela yokuvavanya uxinzelelo lwevalvu yebhola
Uvavanyo lwamandla evalvu yebhola yomoya kufuneka lwenziwe kwimeko yokuba ivalvu yebhola ivuleke kancinci.
①Uvavanyo lokutywina ivalvu yebhola edadayo: beka ivalvu kwimeko evulekileyo kancinci, faka isixhobo sokuvavanya kwelinye icala, uze uvale elinye icala; jikelezisa ibhola izihlandlo ezininzi, vula isiphelo esivaliweyo xa ivalvu ikwimeko evaliweyo, uze ujonge ukusebenza kokutywina kwindawo yokupakisha kunye negasket ngaxeshanye. Akufanele kubekho kuvuza. Isixhobo sokuvavanya emva koko singeniswa kwelinye icala kwaye uvavanyo olungasentla luyaphindwa.
②Uvavanyo lokutywina ivalvu yebhola esisigxina: ngaphambi kovavanyo, jikelezisa ibhola izihlandlo ezininzi ngaphandle komthwalo, ivalvu yebhola esisigxina ikwimeko evaliweyo, kwaye i-test medium ingeniswa ukusuka kwelinye icala ukuya kwixabiso elichaziweyo; ukusebenza kokutywina kwesiphelo sokungeniswa kujongwa nge-pressure gauge, kwaye ukuchaneka kwe-pressure gauge yi-0 .5 ukuya kwi-1, uluhlu luphindwe kayi-1.6 kuxinzelelo lovavanyo. Ngaphakathi kwexesha elichaziweyo, ukuba akukho nto ibangela ukuxinezeleka, iyafaneleka; emva koko ngenisa i-test medium ukusuka kwelinye icala, kwaye uphinde uvavanyo olungasentla. Emva koko, beka ivalvu kwimeko evulekileyo kancinci, vala zombini iziphelo, kwaye ugcwalise umngxuma wangaphakathi nge-medium. Jonga ukupakisha kunye ne-gasket phantsi koxinzelelo lovavanyo, kwaye akufuneki kubekho ukuvuza.
③Ivalvu yebhola enamacala amathathu kufuneka ivavanywe ukuba iqinile na kwindawo nganye.
Ixesha lokuthumela: Matshi-02-2022
