Intshayelelo:

Ekusetyenzisweni kwemihla ngemihla kwabasebenzisi beevalvu zebhabhathane ezinkulu ezinobubanzi obukhulu, sidla ngokubonisa ingxaki, oko kukuthi, ivalvu yebhabhathane enkulu enobubanzi obukhulu esetyenziselwa uxinzelelo oluhlukeneyo yimidiya emikhulu, efana nomphunga, amanzi anoxinzelelo oluphezulu kunye neminye imisebenzi ecinezelweyo, kudla ngokuba nzima kakhulu ukuyivala, nokuba kunzima kangakanani ukuyivala, kuhlala kufumaniseka ukuba kuya kubakho into yokuvuza, kunzima ukuyivala ngokuqinileyo, nto leyo ebangela ingxaki ebangelwa luyilo lwesakhiwo sevalvu kwaye umda womntu kwinqanaba le-torque yokukhupha awanelanga.

Uhlalutyo lwezizathu zobunzima bokutshintsha iivalvu ezinkulu

Amandla okukhupha amandla aqhelekileyo omlinganiselo othe tye womntu omdala yi-60-90kg, kuxhomekeke kubukhulu bomzimba obahlukeneyo.

Indlela eqhelekileyo yokuhamba kwevalvu yebhabhathane yenzelwe ukuba ibe sezantsi ngaphakathi nangaphandle, xa umntu evala ivalvu, umzimba womntu utyhala ivili lesandla ngokuthe tye ukuze lijikeleze, ukuze i-valve flap iye ezantsi ukuze ivalwe, nto leyo efunekayo ukuze koyiswe indibaniselwano yamandla amathathu, oko kukuthi:

1) Ukutyhala phezulu kwe-Axial Fa;

2) ukupakisha kunye namandla okungqubana kwesiqu Fb;

3) I-Stem kunye ne-valve core contact friction Fc

Itotali iyonke yi-∑M=(Fa+Fb+Fc)R

Njengoko kunokubonwa, okukhona i-caliber inkulu, kokukhona amandla okutyhala axial aphezulu, xa ekufutshane nemeko evaliweyo, amandla okutyhala axial aphantse asondele kuxinzelelo lokwenyani lwenethiwekhi yepayipi (ngenxa yokuvalwa kwe-P1-P2 ≈ P1, P2 = 0)

Ukuba kusetyenziswa ivalvu yebhabhathane ye-DN200 caliber kumbhobho womphunga we-10bar, kuphela i-axial thrust yokuqala yokuvala i-Fa = 10 × πr2 = 3140kg, kwaye amandla ajikelezayo angqindilili afunekayo ukuvala asondele kumda wamandla angqindilili angqindilili anokuphuma emzimbeni womntu oqhelekileyo, ngoko ke kunzima kakhulu ukuba umntu ayivale ngokupheleleyo ivalvu phantsi kweemeko zokusebenza ezinjalo.

Kakade ke, ezinye iifektri zicebisa ukuba kufakwe olu hlobo lwevalvu ngasemva, nto leyo esombulula ingxaki yobunzima bokuvala, kodwa emva koko kuvela ingxaki yobunzima bokuvula emva kokuvala.

 

Umenzi weTianjin Zhongfa Valve-ZFA technology department finishing, i-electric flange butterfly valve flange enkulu eneziphene zokuvuza zineemeko ezahlukeneyo ngokweenkqubo ezahlukeneyo, kukho izizathu ezahlukeneyo, ezi zilandelayo ukuze kuhlalutywe la matyala mabini:

 

Okokuqala, ixesha lokwakhiwa elibangelwa yi-flange yombane enkulu ye-flange yebhabhathane, i-valve yokuvuza kwangaphakathi: 

1. Ukuthutha nokuphakamisa ngendlela engafanelekanga okubangelwa kukonakala ngokubanzi kwivalvu yebhabhathane yeflange yombane enkulu enobubanzi obukhulu, ngaloo ndlela kubangele ukuvuza kwevalvu yebhabhathane yeflange yombane enkulu enobubanzi obukhulu;

2. Emva kokuba uxinzelelo lwamanzi luphelile, i-flange yombane enkulu, i-butterfly valve yomile kwaye inyangwa ngonyango lokulwa nokugqwala, nto leyo ebangela ukuba kubekho ukuvuza kwangaphakathi komphezulu wokutywina ukugqwala;

2. Ukhuseleko kwindawo yokwakha alukho, ivalvu yebhabhathane yombane enobubanzi obukhulu ayifakwanga kuzo zombini iziphelo ze-blind, imvula, isanti kunye nezinye izinto ezingcolileyo kwisihlalo sevalvu, nto leyo ebangela ukuvuza;

④ Ngexesha lokufakelwa, akukho grisi ifakwayo kwisihlalo sevalvu, nto leyo ebangela ukuba ukungcola kungene ngasemva kwesihlalo sevalvu, okanye ukutsha okubangelwa kukuvuza kwangaphakathi ngexesha lokuwelda;

⑤ Ivalvu ayifakwanga kwindawo evulekileyo ngokupheleleyo, nto leyo ebangela umonakalo ebholeni. Ngexesha lokuwelda, ukuba ivalvu ayikho kwindawo evulekileyo ngokupheleleyo, i-welding spatter iya kubangela umonakalo ebholeni, kwaye xa ibhola ene-welding spatter ivuliwe kwaye icinyiwe, iya kubangela umonakalo ngakumbi kwisihlalo sevalvu, nto leyo ekhokelela ekuvuzeni kwangaphakathi;

⑥ I-Welding slag kunye nezinye izinto ezishiyekileyo zokwakha ezibangelwa kukukrweleka komphezulu wokutywina;

Indawo engachanekanga yefektri okanye yexesha lokufakelwa elibangelwa kukuvuza, ukuba isingxobo se-valve stem drive okanye ezinye izixhobo kunye nokungahambisani kwayo ne-assembling angle, i-large diameter electric flange butterfly valve iya kuvuza.

 

Okwesibini, ixesha lokusebenza elibangelwa kukuvaleka kwevalvu yebhabhathane yombane enkulu yeflange yombane:

2 Isizathu esiqhelekileyo kukuba umphathi wemisebenzi uqwalasela iindleko zolondolozo ezibizayo ze-large diameter electric flange butterfly valve ayenzi ulondolozo, okanye ukungabikho kwesayensi yeendlela zolawulo kunye neendlela zolondolozo ze-large diameter electric flange butterfly valve ayenzi ulondolozo lokuthintela, nto leyo ebangela ukuba izixhobo zingasebenzi kakuhle kwangaphambili;

② ukusebenza okungafanelekanga okanye ukungahambelani neenkqubo zokulungisa ezibangelwa kukuvuza kwangaphakathi;

③ Xa kusetyenzwa ngendlela eqhelekileyo, iintsalela zokwakha ziyakrwela umphezulu wokutywina, nto leyo ebangela ukuvuza kwangaphakathi;

④ Ukucocwa kwemibhobho ngendlela engafanelekanga kubangela umonakalo kumphezulu wokutywina okubangela ukuvuza kwangaphakathi;

⑤ Ukungalungi okanye ukungasebenzi kwexesha elide kwevalvu yebhabhathane yeflange yombane enkulu, okubangela ukuba isihlalo sevalve kunye nokubamba ibhola, okubangela umonakalo wokutywina xa utshintsha ivalvu yebhabhathane yeflange yombane enkulu enkulu ukuze yenze ukuvuza kwangaphakathi;

⑥ iswitshi yevalvu yeflange yombane enkulu enobubanzi obukhulu ayikho kwindawo yokubangela ukuvuza kwangaphakathi, nayiphi na ivalvu yeflange yombane enkulu enobubanzi obukhulu nokuba ikwindawo yokuvula nokuvala, ngokubanzi ithambekele kwi-2 ° ~ 3 ° inokubangela ukuvuza;

⑦ Iivalvu ezininzi zeflange yombane enkulu enobubanzi obukhulu zinebloko yokumisa isiqu, ukuba zisetyenziswa ixesha elide, ngenxa yokugqwala nokubola kunye nezinye izizathu phakathi kwesiqu kunye nebloko yokumisa isiqu ziya kuqokelelana umhlwa, uthuli, ipeyinti kunye nezinye izinto ezimdaka, ezi nkunkuma ziya kubangela ukuba ivalve yeflange yombane enkulu enobubanzi obukhulu ayinakujikeleziswa endaweni yayo kwaye ibangele ukuvuza - ukuba ivalve yeflange yombane enkulu enobubanzi obukhulu ingcwatyiwe, ukwandiswa kwesiqu sevalve kuya kuvelisa kwaye kuwa umhlwa omninzi kwaye ukungcola kuya kuthintela ukujikeleza kwebhola yevalve endaweni, okubangela ukuvuza kwevalve yeflange yombane enkulu enobubanzi obukhulu.

⑧ i-general actuator nayo inqongophele, ukuba unobangela wexesha elide wokugqwala, ukuqina kwegrisi okanye iibholithi zomda ziya kukhulula umda, nto leyo ebangela ukuvuza kwangaphakathi;

⑨ indawo yevalvu ye-actuator yombane ebekwe phambili, ayinxulumananga nokuba ikwindawo ebangela ukuvuza kwangaphakathi;

⑩ ukungabikho kokugcinwa nokugcinwa rhoqo, okubangela ukuba igrisi yokuvala iqine, igrisi yokuvala eyomileyo, eyomileyo, iqokelelane kwisihlalo sevalvu elastiki, nto leyo ethintela intshukumo yesihlalo sevalvu, nto leyo ebangela ukuba itywinwe.

I-ZFA Valve Factory inamaqela e-QC angoochwephesha ukuqinisekisa ukuba ivalvu nganye engaphakathi nembonakalo yayo ilungile. Kwangaxeshanye, sinetekhnoloji yobungcali kunye namaqela asemva kokuthengisa ukunceda abathengi basombulule iingxaki ezahlukeneyo abadibana nazo ngexesha lokufakwa nokusetyenziswa.