Ngaphambi kobana ivalvu ifakwe, ukuhlolwa kwamandla wevalvu nokuhlolwa kokuvala kwevalvu kufanele kwenziwe ebhentjhini lokuhlolwa kwevalvu. Ama-20% wamavalvu anomfutho ophasi kufanele ahlolwe ngokungakahleleki, begodu ama-100% kufanele ahlolwe nangabe awafaneleki; I-100% yamavalvu aphakathi nendawo naphezulu kufanele ahlolwe. Iinsetjenziswa ezisetjenziswa khulu ekuhlolweni komfutho wevalvu ngamanzi, amafutha, umoya, umtjhiso, inayitrojini, njll. Iindlela zokuhlola umtjhini wamavalvu wezebubulo afaka hlangana amavalvu womoya zilandelako:
Indlela yokuhlola ukugandeleleka kwevalvu ye-Butterfly
Ukuhlolwa kwamandla wevalvu yevivane ye-pneumatic kuyafana neyevalvu ye-globe. Ekuhlolweni kokusebenza kokuvala kwevalvu ye-butterfly, umtjhini wokuhlola kufanele ungeniswe ukusuka ekupheleni kokugeleza kwe-medium, ipuleti le-butterfly kufanele livulwe, elinye ihlangothi kufanele livalwe, begodu umfutho womjovo kufanele ufinyelele inani elibekiweko; ngemva kokuhlola bona akukho ukuvuza ephaketheni nezinye iinvalo, vala ipuleti yevithamini, vula enye iphethelo, bese uhlola ivalvu yevivane. Akukho ukuvuza ekuvalweni kwepuleti okufaneleko. Ivalvu ye-butterfly esetjenziselwa ukulawula ukugeleza kungenzeka ingahlolwa ukusebenza kokuvala.
Indlela yokuhlola ukugandeleleka kwevalvu yokuhlola
Isimo sokuhlolwa kwevalvu yokuhlola: i-eksisi yediski yevalvu yokuhlola yokuphakamisa isebujameni obuqondene nobujamo obuvundlileko; i-eksisi ye-swing check valve channel kanye ne-eksisi yediski zisebujameni obufana nomugqa ovundlileko.
Ngesikhathi sokuhlolwa kwamandla, umtjhini wokuhlola ungeniswa ukusuka ekungeneni ukuya enanini elibekiweko, bese omunye umkhawulo uvalwa, begodu uyafaneleka ukubona bona umzimba wevalvu nesivalo sevalvu azikho ukuvuza.
Ekuhlolweni kokuvala, umtjhini wokuhlola ungeniswa ukusuka ekupheleni kokuphuma, begodu indawo yokuvala ihlolwa ekupheleni kokungena, begodu akukho ukuvuza ephaketheni ne-gasket okufaneleko.
Indlela yokuhlola ukugandeleleka kwevalvu yesango
Ukuhlolwa kwamandla wevalvu yesango kuyafana nokwevalvu ye-globe. Kuneendlela ezimbili zokuhlola ukuqina kwevalvu yesango.
①Vula isango ukwenza umfutho wevalvu ukhuphukele enanini elibekiweko; bese uvala isango, ukhuphe ivalvu yesango khonokho, uhlole bona ingabe kukhona ukuvuza eendaweni ezivala emahlangothini womabili wesango, nofana ufake ngqo umtjhini wokuhlola ngaphakathi kwepulaki esembozweni sevalvu ukuya enanini elibekiweko, hlola iimvalo emahlangothini womabili wesango. Indlela engenhla ibizwa ngokuthi yi-intermediate pressure test. Indlela le akukafaneli isetjenziselwe ukuhlolwa kokuvala amavalvu wesango anobubanzi obungaphasi kwe-DN32mm.
②Enye indlela kuvula isango ukwenza umfutho wokuhlolwa kwevalvu ukhuphukele enanini elibekiweko; bese uvala isango, uvule umphetho owodwa wepuleti engabonakaliko, bese uhlola bona indawo yokuvala iyavuza na. Bese ubuyela emuva begodu uphinde ukuhlolwa okungenhla bekube kulapho sele kufaneleka.
Ukuhlolwa kokuqina kokupakisha ne-gasket yevalvu yesango le-pneumatic kuzokwenziwa ngaphambi kokuhlolwa kokuqina kwesango.
Indlela yokuhlola umfutho wevalvu yokunciphisa umfutho
①Ukuhlolwa kwamandla wevalvu yokwehlisa umfutho kuvamise ukuhlanganiswa ngemva kokuhlolwa kwesiqetjhana sinye, begodu kungahlolwa ngemva kokuhlanganiswa. Isikhathi sokuhlolwa kwamandla: 1min ye-DN<50mm; ngaphezu kwemizuzu emi-2 ye-DN65～150mm; ngaphezu kwemizuzu emi-3 ye-DN>150mm.
Ngemva kobana ibhelo neengcenye zihlanganiswe, faka umfutho ophindwe ka-1.5 wevalvu yokwehlisa umfutho, bese wenza ukuhlolwa kwamandla ngomoya.
②Ukuhlolwa kokungangeni komoya kuzokwenziwa ngokuya kwendlela yokusebenza yangempela. Lokha nawuhlola ngomoya nofana ngamanzi, hlola ngomfutho ophindwe ka-1.1; lokha nawuhlola ngomtjhiso, sebenzisa umfutho wokusebenza ophezulu ovunyelweko ngaphasi kwezinga lokutjhisa lokusebenza. Umehluko phakathi komtjhini wokungena nomfutho wokuphuma kutlhogeka bona ungabi ngaphasi kwe-0.2MPa. Indlela yokuhlola ithi: ngemva kokuthi umfutho wokungena ulungiswe, kancanikancani lungisa isikrufu sokulungisa sevalvu, ukwenzela bona umfutho wokuphuma utjhuguluke ngokuzwela begodu ngokuragela phambili ngaphakathi kwebanga lamazinga aphezulu naphasi, ngaphandle kokuma nofana ukujamelana. Nge-valve yokwehlisa umfutho womtjhiso, lokha umfutho wokungena ulungiswa kude, i-valve ivalwa ngemva kokuthi i-valve ivalwe, begodu umfutho wokuphuma uba ngamanani aphezulu naphasi. Ngaphakathi kwemizuzu emi-2, ukwanda komfutho wokuphuma kufanele kuhlangabezane neemfuneko ezikuThebuli 4.176-22. Ngesikhathi esifanako, iphayiphi ngemva kwevalvu kufanele ibe Ivolumu ihambisana neemfuneko ezikuThebuli 4.18 ukuze ifaneleke; emavalvuni wokwehlisa umfutho wamanzi nomoya, lokha umfutho wokungena nawubekiweko begodu umfutho wokuphuma u-zero, ivalvu yokwehlisa umfutho ivalwa ukuhlolwa ukuqina, begodu akukho ukuvuza ngaphakathi kwemizuzu emi-2 okufanelekileko.
Indlela yokuhlola umfutho we-globe valve kanye ne-throttle valve
Ukuhlolwa kwamandla we-globe valve ne-throttle valve, i-valve ehlanganisiweko ivamise ukufakwa ngaphakathi kwefreyimu yokuhlola ukugandeleleka, idiski ye-valve iyavulwa, i-medium ifakwa enanini elibekiweko, bese umzimba we-valve nesembozo se-valve kuyahlolwa ukujuluka nokuvuza. Ukuhlolwa kwamandla kungenziwa godu esiqetjhaneni sinye. Ukuhlolwa kokuqina kwenzelwe ivalvu yokuvala kwaphela. Ngesikhathi sokuhlolwa, isiqu se-valve se-globe valve sisebujameni obujame ngqo, idiski ye-valve iyavulwa, umphakathi ungeniswa ukusuka ekupheleni okungezansi kwe-valve disc ukuya enanini elitjhiwoko, bese kuthi ukupakisha ne-gasket kuyahlolwa; ngemva kokuphumelela ekuhlolweni, idiski yevalvu iyavalwa, kuthi enye iphethelo ivuliwe ukuhlola bona ingabe kukhona ukuvuza. Nangabe ukuhlolwa kwamandla nokuqina kwevalvu kuzokwenziwa, ukuhlolwa kwamandla kungenziwa kokuthoma, bese umfutho wehliswa ube senani elitjhiwoko lokuhlolwa kokuqina, bese kuthi ukupakisha ne-gasket kuyahlolwa; bese idiski yevalvu iyavalwa, bese umphetho wokuphuma uvulwa ukuhlola bona indawo yokuvala iyavuza na.
Indlela yokuhlola ukugandeleleka kwevalvu yebholo
Ukuhlolwa kwamandla wevalvu yebholo yomoya kufanele kwenziwe ebujameni obuvulekileko bevalvu yebholo.
①Ukuhlolwa kokuvala kwevalvu yebhola elintantako: faka ivalvu ibe sebujameni obuvulekileko, faka umtjhini wokuhlola ngakelinye ihlangothi, bese uvala elinye ihlangothi; jika ibholo kanengi, vula umphetho ovaliweko lokha ivalvu nayisebujameni obuvaliweko, begodu uhlole ukusebenza kokuvala ekupakishweni nasegasketi ngesikhathi sinye. Akukafaneli kube nokuvuza. Umtjhini wokuhlola uyafakwa ukusuka ngakelinye ihlangothi bese ukuhlolwa okungenhla kuyaphindwa.
②Ukuhlolwa kokuvala kwe-valve yebholo engatjhugulukiko: ngaphambi kokuhlolwa, jika ibholo kanengi ngaphandle komthwalo, i-valve yebholo engatjhugulukiko isebujameni obuvaliweko, begodu umtjhini wokuhlola ungeniswa ukusuka kwelinye icala ukuya enanini elibekiweko; ukusebenza kokuvala kwesiphetho sokungeniswa kuhlolwa ngegeji yomfutho, begodu ukunemba kwegeyiji yomfutho ku-0 .5 ukuya ku-1, ububanzi buphindwe ka-1.6 umfutho wokuhlolwa. Ngesikhathi esibekiweko, nangabe kungekho isenzakalo sokunciphisa umfutho, kuyafaneleka; bese wethula umtjhini wokuhlola ukusuka ngakelinye ihlangothi, bese uphinda ukuhlolwa okungenhla. Bese, faka ivalvu ibe sesimweni esivulekileko, vala zombili iinphetho, bese ugcwalisa umgodi wangaphakathi nge-medium. Hlola ukupakisha ne-gasket ngaphasi komfutho wokuhlolwa, begodu akukafaneli kube nokuvuza.
③Ivalvu yebholo eneendlela ezintathu izakuhlolwa ukuqina endaweni ngayinye.
Isikhathi sokuposa: Mar-02-2022
