Ngaphambi kokuthi i-valve ifakwe, ukuhlolwa kwamandla e-valve kanye nokuhlolwa kokuvala i-valve kufanele kwenziwe ebhentshini lokuhlola i-valve hydraulic test. I-20% yama-valve anengcindezi ephansi kufanele ihlolwe ngokungahleliwe, futhi i-100% kufanele ihlolwe uma ingafaneleki; Ama-valve angu-100% aphakathi nendawo naphezulu kufanele ahlolwe. Imidiya esetshenziswa kakhulu ukuhlola umfutho we-valve ngamanzi, uwoyela, umoya, isitimu, i-nitrogen, njll. Izindlela zokuhlola ingcindezi yamavavu ezimboni okuhlanganisa amavalvu womoya zimi kanje:
Indlela yokuhlola ingcindezi ye-Butterfly valve
Ukuhlolwa kwamandla kwevalve uvemvane womoya kuyefana naleyo yevalvu yembulunga. Ekuhlolweni kokusebenza kokuvala i-valve ye-butterfly, indawo yokuhlola kufanele yethulwe kusukela ekugcineni kokugeleza kwe-medium, ipuleti le-butterfly kufanele livulwe, elinye ukuphela kufanele livalwe, futhi ukucindezela komjovo kufanele kufinyelele inani elishiwo; ngemva kokuhlola ukuthi akukho ukuvuza ekupakisheni nakwezinye izimpawu, vala ipuleti levemvane, vula elinye icala, futhi uhlole i-valve uvemvane. Akukho ukuvuza ku-plate seal okufanelekile. Ivalve yovemvane esetshenziselwa ukulawula ukugeleza ingase ingahlolelwa ukusebenza kokuvala.
Indlela yokuhlola ingcindezi ye-valve yokuhlola
Hlola isimo sokuhlola i-valve: i-axis ye-lift check valve disc isendaweni eqondile ukuya evundlile; i-axis yesiteshi se-valve yokuhlola i-swing kanye ne-disc axis isesimweni esicishe silingane nomugqa ovundlile.
Ngesikhathi sokuhlolwa kwamandla, indawo yokuhlola yethulwa ukusuka endaweni yokungena kuye enanini elishiwo, kanti enye iphetho ivaliwe, futhi ifaneleka ukubona ukuthi umzimba we-valve nesembozo se-valve akuvuzi.
Esivivinyweni sokuvala, indawo yokuhlola yethulwa kusukela ekugcineni kokuphuma, futhi indawo yokuvala iyahlolwa ekugcineni kokungena, futhi akukho ukuvuza ekupakisheni naku-gasket okufanelekile.
Indlela yokuhlola ingcindezi ye-valve yesango
Ukuhlolwa kwamandla kwe-valve yesango kuyefana nalokho kwe-valve yembulunga. Kunezindlela ezimbili zokuhlola ukuqina kwe-valve yesango.
①Vula isango ukuze wenze ukucindezela ku-valve kukhuphuke kunani elishiwo; bese uvala isango, ukhiphe i-valve yesango ngokushesha, uhlole ukuthi ingabe kukhona ukuvuza ezimpahleni zombili zesango, noma ujove ngokuqondile indawo yokuhlola kupulaki esembozweni se-valve enanini elishiwo, hlola izimpawu kuzo zombili. emaceleni esango. Indlela engenhla ibizwa ngokuthi i-intermediate pressure test. Le ndlela akufanele isetshenziselwe ukuhlolwa kokuvala ama-valve esango anobubanzi obuncane obungaphansi kwe-DN32mm.
②Enye indlela ukuvula isango ukwenza ukucindezela kokuhlolwa kwe-valve kukhuphuke kunani elishiwo; bese uvala isango, uvule ingxenye eyodwa yepuleti eliyimpumputhe, bese uhlola ukuthi indawo yokuvala iyavuza yini. Bese ubuyela emuva bese uphinda ukuhlolwa okungenhla kuze kube yilapho kufanelekile.
Ukuhlolwa kokuqina kokupakisha kanye ne-gasket ye-valve yesango le-pneumatic kuzokwenziwa ngaphambi kokuhlolwa kokuqina kwesango.
Indlela yokuhlola ingcindezi yevalvu yokunciphisa ingcindezi
①Ukuhlolwa kwamandla kwe-valve yokunciphisa ingcindezi ngokuvamile kuqoqwe ngemva kokuhlolwa kwesiqephu esisodwa, futhi kungabuye kuhlolwe ngemva kokuhlanganiswa. Ubude besikhathi sokuhlolwa kwamandla: 1min ye-DN<50mm; ngaphezu kwemizuzu emi-2 ye-DN65～150mm; ngaphezu kwemizuzu emi-3 ye-DN> 150mm.
Ngemuva kokuthi ama-bellows kanye nezingxenye zishiselwe, sebenzisa izikhathi ezingu-1.5 ukucindezela okukhulu kwe-valve yokunciphisa ingcindezi, bese uhlola amandla ngomoya.
②Ukuhlolwa kokungenisa umoya kuzokwenziwa ngokuya ngendlela yokusebenza yangempela. Uma uhlola ngomoya noma ngamanzi, hlola izikhathi ezingu-1.1 ukucindezela okujwayelekile; lapho uhlola nge-steam, sebenzisa ingcindezi yokusebenza ephezulu evunyelwe ngaphansi kwezinga lokushisa lokusebenza. Umehluko phakathi kwengcindezi yokungena kanye nengcindezi yokuphuma kuyadingeka ukuthi ungabi ngaphansi kuka-0.2MPa. Indlela yokuhlola iwukuthi: ngemva kokulungiswa kokucindezela kokungena, lungisa kancane kancane isikulufu sokulungisa se-valve, ukuze ukucindezela kokuphumayo kungashintsha ngokuzwela nangokuqhubekayo phakathi kobubanzi bamanani aphezulu kanye nobuncane, ngaphandle kokuma noma ukugxuma. Ukuze i-valve yokunciphisa umfutho we-steam, lapho ukucindezela kwe-inlet kulungiswa kude, i-valve ivaliwe ngemva kokuba i-valve ivaliwe, futhi ukucindezela kwe-outlet kungamanani aphezulu kakhulu futhi aphansi kakhulu. Ngaphakathi kwe-2min, ukunyuka kwengcindezi yokuphuma kufanele kuhlangabezane nezidingo kuThebula 4.176-22. Ngesikhathi esifanayo, ipayipi elingemuva kwevalvu kufanele libe Ivolumu ihambisana nezidingo ezikuThebula 4.18 ukuze ifaneleke; ama-valve okunciphisa umfutho wamanzi nomoya, lapho ukucindezela kwe-inlet kusethiwe futhi ingcindezi yokuphuma ingu-zero, i-valve yokunciphisa ingcindezi ivaliwe ukuhlolwa kokuqina, futhi akukho ukuvuza phakathi kwemizuzu engu-2 kufanelekile.
Indlela yokuhlola ingcindezi ye-globe valve kanye ne-throttle valve
Ukuze kuhlolwe amandla e-globe valve kanye ne-throttle valve, i-valve ehlanganisiwe ivamise ukufakwa kuhlaka lokuhlola ingcindezi, i-valve disc iyavulwa, i-medium ijovwe enani elishiwo, bese kuthi umzimba we-valve kanye nesembozo se-valve kuhlolwe ukujuluka kanye ne-valve. ukuvuza. Ukuhlolwa kwamandla nakho kungenziwa ngocezu olulodwa. Ukuhlolwa kokuqina okwe-valve yokuvala kuphela. Ngesikhathi sokuhlolwa, isiqu se-valve se-valve yembulunga sisesimweni esiqondile, i-disc ye-valve ivuliwe, i-medium yethulwa kusukela ekugcineni kwe-disc ye-valve kuya enani elicacisiwe, futhi ukupakishwa kanye ne-gasket kuyahlolwa; ngemva kokuphumelela ukuhlolwa, i-disc ye-valve ivaliwe, futhi enye iphetho ivuliwe ukuze kuhlolwe ukuthi kukhona ukuvuza. Uma ukuhlolwa kwamandla nokuqina kwe-valve kufanele kwenziwe, ukuhlolwa kwamandla kungenziwa kuqala, khona-ke ingcindezi iyancipha ibe yinani elicacisiwe lokuhlolwa kokuqina, futhi ukupakishwa kanye ne-gasket kuhlolwe; khona-ke i-disc ye-valve ivaliwe, futhi isiphetho sokuphuma siyavulwa ukuze kubhekwe ukuthi indawo yokuvala uphawu iyavuza yini.
Indlela yokuhlola ingcindezi ye-valve yebhola
Ukuhlolwa kwamandla kwe-valve yebhola yomoya kufanele kwenziwe esimweni esivulekile se-valve yebhola.
①Ukuhlolwa kokuvala i-valve yebhola elintantayo: beka i-valve endaweni evuleke uhhafu, ngenisa indawo yokuhlola ekugcineni, bese uvala enye ingxenye; zungeza ibhola izikhathi eziningana, vula ukuphela okuvaliwe lapho i-valve isesimweni esivaliwe, futhi uhlole ukusebenza kokuvalwa kokupakisha kanye ne-gasket ngesikhathi esifanayo. Akufanele kube khona ukuvuza. I-test medium yethulwa ngakolunye uhlangothi bese ukuhlolwa okungenhla kuyaphindwa.
②Ukuhlolwa kokuvala kwe-valve yebhola ehleliwe: ngaphambi kokuhlolwa, zungeza ibhola izikhathi eziningana ngaphandle komthwalo, i-valve yebhola ehleliwe isesimweni esivaliwe, futhi indawo yokuhlola yethulwa kusukela ekugcineni kuya kwenani elicacisiwe; ukusebenza kokuvala isiphetho sesingeniso kuhlolwa nge-gauge ye-pressure gauge, futhi ukunemba kwe-gauge ye-pressure yi-0 .5 kuya ku-1, ububanzi buyizikhathi ezingu-1.6 zokucindezela kokuhlola. Phakathi nesikhathi esibekiwe, uma kungekho mkhuba wokucindezeleka, ufanelekile; bese wethula indlela yokuhlola ukusuka komunye umkhawulo, bese uphinda isivivinyo esingenhla. Bese, faka i-valve endaweni evulekile, vala iziphetho zombili, bese ugcwalisa i-cavity yangaphakathi nge-medium. Hlola ukupakisha kanye ne-gasket ngaphansi kwengcindezi yokuhlola, futhi akumele kube khona ukuvuza.
③I-valve yebhola enezinhlangothi ezintathu izohlolelwa ukucinana endaweni ngayinye.
Isikhathi sokuthumela: Mar-02-2022
