Ngaphambi kokuba ivalvu ifakwe, ukuhlolwa kwamandla evalvu kanye nokuhlolwa kokuvala ivalvu kufanele kwenziwe ebhentshini lokuhlola ivalvu le-hydraulic. Ama-valvu angu-20% aphansi kufanele ahlolwe ngokungahleliwe, kanti ama-valvu angu-100% kufanele ahlolwe uma engafaneleki; ama-valvu angu-100% aphakathi nendawo kanye naphezulu kufanele ahlolwe. Izinto ezisetshenziswa kakhulu ekuhlolweni kokucindezela kwevalvu ngamanzi, uwoyela, umoya, umusi, i-nitrogen, njll. Izindlela zokuhlola ukucindezela kwamavalvu ezimboni kufaka phakathi amavalvu omoya yilezi ezilandelayo:
Indlela yokuhlola ingcindezi ye-Butterfly valve
Ukuhlolwa kwamandla kwevalvu yebhabhathane ephefumulayo kufana nokwevalvu yomhlaba. Ekuhlolweni kokusebenza kokuvala kwevalvu yebhabhathane, indawo yokuhlola kufanele ingeniswe kusukela ekugcineni kokugeleza kwendawo, ipuleti lebhabhathane kufanele livulwe, olunye uhlangothi kufanele luvalwe, futhi ingcindezi yomjovo kufanele ifinyelele inani elibekiwe; ngemva kokuhlola ukuthi akukho ukuvuza epaketheni nakwezinye izivalo, vala ipuleti lebhabhathane, vula olunye uhlangothi, bese uhlola ivalvu yebhabhathane. Akukho ukuvuza epaketheni lesivalo okufanelekile. Ivalvu yebhabhathane esetshenziselwa ukulawula ukugeleza kungenzeka ingahlolwa ukusebenza kokuvala.
Indlela yokuhlola ingcindezi ye-check valve
Isimo sokuhlolwa kwevalvu yokuhlola: i-axis yediski yevalvu yokuhlola yokuphakamisa isendaweni eqondile neqondile; i-axis yesiteshi sevalvu yokuhlola yokushintshashintsha kanye ne-axis yediski kusendaweni ecishe ifane nomugqa ovundlile.
Ngesikhathi sokuhlolwa kwamandla, indawo yokuhlola ifakwa kusukela endaweni yokungena iye enanini elicacisiwe, kanti olunye uhlangothi luvaliwe, futhi kuyafaneleka ukubona ukuthi umzimba wevalvu kanye nesembozo sevalvu akunawo amanzi avuzayo.
Ekuhlolweni kokuvala, indawo yokuhlola ifakwa kusukela ekugcineni kokuphuma, futhi indawo yokuvala ihlolwe ekugcineni kokungena, futhi akukho ukuvuza ekuphakelweni kanye ne-gasket okufanelekile.
Indlela yokuhlola ingcindezi ye-valve yesango
Ukuhlolwa kwamandla evalvu yesango kufana nokwevalvu yembulunga. Kunezindlela ezimbili zokuhlola ukuqina kwevalvu yesango.
①Vula isango ukuze umfutho osevalvini ukhuphukele enanini elibekiwe; bese uvala isango, ukhiphe ivalvu yesango ngokushesha, hlola ukuthi kukhona yini ukuvuza ezivalweni zombili zesango, noma ufake ngqo i-test medium epulakini esembozweni sevalvu enanini elibekiwe, hlola izivalo zombili zesango. Indlela engenhla ibizwa ngokuthi ukuhlolwa komfutho ophakathi. Le ndlela akufanele isetshenziselwe ukuhlolwa kokuvala kumavalvu esango anobubanzi obungaphansi kwe-DN32mm.
②Enye indlela ukuvula isango ukuze ingcindezi yokuhlola i-valve ikhuphuke iye enanini elibekiwe; bese uvala isango, uvule umkhawulo owodwa wepuleti elingaboni, bese uhlola ukuthi indawo yokuvala iyavuza yini. Bese ujika ubuyele emuva bese uphinda ukuhlolwa okungenhla kuze kube yilapho kufaneleke.
Ukuhlolwa kokuqina kokupakisha kanye ne-gasket ye-valve yesango elinomoya kufanele kwenziwe ngaphambi kokuhlolwa kokuqina kwesango.
Indlela yokuhlola ingcindezi ye-valve yokunciphisa ingcindezi
①Ukuhlolwa kwamandla kwevalvu yokunciphisa ingcindezi ngokuvamile kuhlanganiswa ngemva kokuhlolwa kwengxenye eyodwa, futhi kungahlolwa ngemva kokuhlanganiswa. Ubude bokuhlolwa kwamandla: 1 min ye-DN<50mm; ngaphezu kwemizuzu emi-2 ye-DN65～150mm; ngaphezu kwemizuzu emi-3 ye-DN>150mm.
Ngemva kokuba izimbobo kanye nezingxenye sezihlanganisiwe, faka ingcindezi ephezulu yevalvu yokunciphisa ingcindezi ngokuphindwe ka-1.5, bese wenza ukuhlolwa kwamandla ngomoya.
②Ukuhlolwa kokungabi nomoya kufanele kwenziwe ngokwendlela yokusebenza yangempela. Uma uhlola ngomoya noma ngamanzi, hlola ngokuphindwe ka-1.1 kwengcindezi evamile; uma uhlola ngomusi, sebenzisa ingcindezi yokusebenza ephezulu evunyelwe ngaphansi kwezinga lokushisa lokusebenza. Umehluko phakathi kwengcindezi yokungena kanye nengcindezi yokukhipha kudingeka ube ngaphansi kuka-0.2MPa. Indlela yokuhlola yile: ngemva kokulungiswa kwengcindezi yokungena, lungisa kancane kancane isikulufu sokulungisa sevalvu, ukuze ingcindezi yokukhipha ikwazi ukushintsha ngokuzwela nangokuqhubekayo ngaphakathi kobubanzi bamanani aphezulu naphansi, ngaphandle kokuma noma ukuminyana. Kwivalvu yokunciphisa ingcindezi yomusi, lapho ingcindezi yokungena ilungiswa kude, ivalvu ivaliwe ngemva kokuvalwa kwevalvu, kanti ingcindezi yokukhipha iyinani eliphakeme neliphansi kakhulu. Ngaphakathi kwemizuzu emi-2, ukwanda kwengcindezi yokukhipha kufanele kuhlangabezane nezidingo kuThebula 4.176-22. Ngesikhathi esifanayo, ipayipi elingemuva kwevalvu kufanele libe yi-. Ivolumu ihambisana nezidingo kuThebula 4.18 ukuze ifaneleke; Kuma-valve okunciphisa umfutho wamanzi nomoya, lapho ingcindezi yokungena isethiwe futhi ingcindezi yokuphuma ingu-zero, i-valve yokunciphisa umfutho ivaliwe ukuze kuhlolwe ukuqina, futhi akukho ukuvuza okuvumelekile kungakapheli imizuzu emi-2.
Indlela yokuhlola ingcindezi ye-globe valve kanye ne-throttle valve
Ukuze kuvivinywe amandla e-globe valve kanye ne-throttle valve, i-valve ehlanganisiwe ivame ukufakwa ohlakeni lokuhlola ingcindezi, i-valve disc iyavulwa, i-medium ifakwa enanini elicacisiwe, bese umzimba we-valve kanye nesembozo se-valve kuyahlolwa ukuthi akunamjuluko noma ukuvuza. Ukuhlolwa kwamandla kungenziwa futhi engxenyeni eyodwa. Ukuhlolwa kokuqina kwenzelwe i-valve yokuvala kuphela. Ngesikhathi sokuhlolwa, isiqu se-valve se-globe valve sisesimweni esiqondile, i-valve disc iyavulwa, i-medium yethulwa kusukela ekugcineni kwe-valve disc iye enanini elicacisiwe, bese kuhlolwa ukupakisha kanye ne-gasket; ngemva kokudlula esivivinyweni, i-valve disc iyavalwa, bese kuvulwa olunye uhlangothi ukuze kuhlolwe ukuthi kukhona yini ukuvuza. Uma ukuhlolwa kwamandla kanye nokuqina kwe-valve kuzokwenziwa, ukuhlolwa kwamandla kungenziwa kuqala, bese kunciphisa ingcindezi iye enanini elicacisiwe lokuhlolwa kokuqina, bese kuhlolwa ukupakisha kanye ne-gasket; bese kuvalwa i-valve disc, bese kuvulwa ukuphela kokuphuma ukuze kuhlolwe ukuthi ngabe indawo yokuvala iyavuza yini.
Indlela yokuhlola ukucindezela kwe-ball valve
Ukuhlolwa kwamandla evalvu yebhola yomoya kufanele kwenziwe esimweni sokuvuleka kwesigamu sevalvu yebhola.
①Ukuhlolwa kokuvala ivalvu yebhola elintantayo: beka ivalvu esimweni sokuvuleka kancane, faka indawo yokuhlola ekugcineni, bese uvala okunye; phendula ibhola izikhathi eziningana, vula ukuphela okuvaliwe lapho ivalvu isesimweni sokuvala, bese uhlola ukusebenza kokuvala ekupakisheni nasegasketni ngesikhathi esifanayo. Akufanele kube khona ukuvuza. Indawo yokuhlola ibe isingeniswa kusukela komunye umkhawulo bese ukuhlolwa okungenhla kuyaphindwa.
②Ukuhlolwa kokuvala kwevalvu yebhola elungisiwe: ngaphambi kokuhlolwa, jikelezisa ibhola izikhathi eziningana ngaphandle komthwalo, ivalvu yebhola elungisiwe isesimweni sokuvalwa, futhi indawo yokuhlola yethulwa kusukela kolunye uhlangothi kuya enanini elicacisiwe; ukusebenza kokuvala kokuphela kwesingeniso kuhlolwa ngesilinganiso sokucindezela, futhi ukunemba kwesilinganiso sokucindezela kungu-0 .5 kuya ku-1, ububanzi buphindwe izikhathi ezingu-1.6 kunokucindezela kokuhlola. Phakathi nesikhathi esicacisiwe, uma kungekho sici sokucindezeleka, siyafaneleka; bese wethula indawo yokuhlola kusukela kolunye uhlangothi, bese uphinda ukuhlolwa okungenhla. Bese, faka ivalvu esimweni sokuvula ingxenye, vala zombili izinhlangothi, bese ugcwalisa umgodi wangaphakathi ngesikhala. Hlola ukupakisha kanye ne-gasket ngaphansi kokucindezela kokuhlola, futhi akumele kube nokuvuza.
③Ivalvu yebhola enezindlela ezintathu kufanele ihlolwe ukuqina endaweni ngayinye.
Isikhathi sokuthunyelwe: Mashi-02-2022
