Isingeniso:

Ekusetshenzisweni kwansuku zonke kwabasebenzisi abakhulu be-butterfly valve, sivame ukubonisa inkinga, okungukuthi, i-valve enkulu ye-butterfly esetshenziselwa ukucindezela okuhlukile imidiya enkulu kakhulu, njenge-steam, amanzi anomfutho ophezulu kanye nomunye umsebenzi ocindezelweyo, ngokuvamile kunzima kakhulu ukuvala, kungakhathaliseki ukuthi kunzima kangakanani ukuvala, njalo kutholakala ukuthi kuzoba khona ukuvuza, kunzima ukuvala ngokuqinile okubangelwa ukwakheka kwe-valve kanye nomphumela we-valve. Izinga le-torque yokukhiphayo ayanele. ‍

Ukuhlaziywa kwezizathu zobunzima ekushintsheni ama-valves amakhulu

Amandla okukhipha umkhawulo ovundlile ojwayelekile womuntu omdala angama-60-90kg, kuya ngosayizi abahlukene bomzimba.

Ukuqondisa okujwayelekile kokugeleza kwe-valve uvemvane kuklanyelwe ukuba kube kuncane futhi kube phezulu, lapho umuntu evala i-valve, umzimba womuntu uphusha isondo lesandla ngokuvundlile ukuze lijikeleze, ukuze i-flap ye-valve iye phansi ukuze ifinyelele ukuvala, okudingekayo ukuze kunqobe inhlanganisela yamandla amathathu, okungukuthi:

1) i-Axial top thrust Fa;

2) ukupakisha kanye ne-stem friction force Fb;

3) Isiqu kanye ne-valve core contact friction Fc

Isamba setorque ngu-∑M=(Fa+Fb+Fc)R

Njengoba kubonakala, i-caliber enkulu, i-axial thrust force enkulu, lapho iseduze nesimo esivaliwe, i-axial thrust force cishe iseduze nokucindezela kwangempela kwenethiwekhi yepayipi (ngenxa yokuvalwa kwe-P1-P2 ≈ P1, P2 = 0)

Uma i-valve uvemvane we-DN200 isetshenziswa epayipini le-steam elingu-10bar, i-axial thrust yokuqala evalayo kuphela engu-Fa = 10 × πr2 = 3140kg, futhi amandla ayisiyingi avundlile adingekayo ukuze kuvalwe asondele emkhawulweni we-axial circumferential force engakwazi ukuphuma kumuntu oseduze nezimo ezivamile ezisebenzayo, ngakho-ke i-valve esebenza ngaphansi kwezimo ezinjalo inzima kakhulu.

Yiqiniso ezinye izimboni zitusa ukufaka lolu hlobo lwe-valve ngokuphambene, okuxazulula inkinga yobunzima bokuvala, kodwa-ke inkinga yobunzima ekuvuleni ngemva kokuvala kuphakama. ‍

 

I-diameter enkulu kagesi ye-flange butterfly valve umenzi we-Tianjin Zhongfa Valve-ZFA umnyango wobuchwepheshe wokuqeda, ububanzi obukhulu be-flange butterfly valve ukuvuza izizathu zinezimo ezihlukene ngokwezinhlelo ezahlukene, kunezizathu ezahlukene, okulandelayo ukuhlaziya amacala amabili:

 

Okokuqala, isikhathi sokwakha esibangelwa ububanzi obukhulu be-valve butterfly valve ye-butterfly izizathu zokuvuza kwangaphakathi: 

① ezokuthutha nokuphakamisa ngendlela engafanele okudalwe umonakalo ophelele we-valve yovemvane ye-flange kagesi enobubanzi obukhulu, ngaleyo ndlela kubangele ukuvuza kwevalvu yevamvane ye-flange enkulu;

② ifektri, ngemva ukucindezela kwamanzi akazange ukudlala ububanzi electric flange butterfly valve omiswe kanye nokwelashwa anticorrosion, okuholela ekwakhekeni ukuvuza kwangaphakathi ukugqwala seal surface;

③ ukuvikelwa indawo ukwakhiwa akukho endaweni, ububanzi electric flange butterfly valve enkulu ayifakiwe emikhawulweni yomibili impumputhe, imvula, isihlabathi nokunye ukungcola esihlalweni valve, okuholela ukuvuza;

④ Ngesikhathi sokufakwa, awekho amafutha afakwa esihlalweni sevalvu, okuholela ekungcoleni okungena ngemuva kwesihlalo sevalvu, noma ukusha okubangelwa ukuvuza kwangaphakathi ngesikhathi sokushisela;

⑤ I-valve ayifakiwe endaweni evulekile ngokugcwele, idala umonakalo ebhola. Ngesikhathi sokushisela, uma i-valve ingekho endaweni evulekile ngokugcwele, i-spatter ye-welding izodala umonakalo ebhola, futhi lapho ibhola eline-welding spatter livuliwe futhi livaliwe, lizoqhubeka libangele umonakalo esihlalweni se-valve, ngaleyo ndlela kuholele ekuvuzeni kwangaphakathi;

⑥ I-slag yokushisela nezinye izinsalela zokwakha ezibangelwa imihuzuko yokuvalwa kwendawo;

ifekthri noma isikhathi sokufaka indawo engalungile ebangelwa ukuvuza, uma umkhono we-valve stem drive noma ezinye izesekeli kanye nokungahambi kahle kwayo kwe-engeli yomhlangano, i-valve yovemvane ye-flange enkulu enobubanzi bayovuza.

 

Okwesibili, isikhathi sokusebenza esibangelwa izizathu zokuvuza kwe-valve ye-butterfly enkulu kagesi ye-flange:

① Isizathu esivame kakhulu ukuthi umphathi wokusebenza ucabangela izindleko zokunakekela ezibiza kakhulu ze-valve yovemvane ye-flange enkulu enobubanzi kagesi ayenzi ukunakekelwa, noma ukuntuleka kokuphathwa kwe-valve ye-butterfly kagesi ububanzi obukhulu kanye nezindlela zokugcinwa kwe-valve ye-butterfly enkulu ububanzi kagesi ayenzi ukulungiswa kokuvimbela, okuholela ekuhlulekeni kwemishini kusenesikhathi;

② ukusebenza ngendlela engafanele noma cha ngokuhambisana nezinqubo zokulungisa ukulungiswa okubangelwa ukuvuza kwangaphakathi;

③ Ekusebenzeni okuvamile, izinsalela zokwakha ziklwebha indawo yokuvala, okuholela ekuvuzeni kwangaphakathi;

④ Ukuhlanzwa kwamapayipi okungafanele kubangela ukulimala endaweni evalekile okuholela ekuvuzeni kwangaphakathi;

⑤ Ukungakhathaleli isikhathi eside noma ukungasebenzi kwevalve yovemvane ye-flange kagesi enobubanzi obukhulu, okuholela esihlalweni se-valve nokubamba ibhola, okubangela ukulimala kokuvala lapho ushintsha i-valve ye-butterfly kagesi enobubanzi obukhulu ukuze kwakhe ukuvuza kwangaphakathi;

⑥ ububanzi electric flange butterfly valve switch ayikho endaweni ukuze kubangele ukuvuza kwangaphakathi, noma yimuphi ububanzi electric flange uvemvane valve kungakhathaliseki indawo yokuvula nokuvala, ngokuvamile sitsheke 2 ° ~ 3 ° kungase kubangele ukuvuza;

⑦ Amavalvu amaningi kagesi anobubanzi obukhulu anobubanzi obukhulu ngokuvamile ane-stem stop block, uma esetshenziswa isikhathi eside, ngenxa yokugqwala nokugqwala nezinye izizathu phakathi kwe-stem ne-stem stop block azoqongelela ukugqwala, uthuli, upende nezinye izibi, le mfucumfucu izodala ububanzi obukhulu be-flange kagesi ye-butterfly ibe i-valve ejikelezayo ye-butterfly ingakwazi ukubangela indawo ye-butterfly ejikelezayo I-valve uvemvane we-flange Iyangcwatshwa, ukwelula isiqu se-valve kuzoveza futhi kuwele ukugqwala okwengeziwe futhi ukungcola kuvimbele ukuzungezisa kwebhola le-valve endaweni, okuholela ekuvuzeni kwevalve ye-valve ye-valve enkulu ububanzi.

⑧ i-actuator evamile nayo inomkhawulo, uma imbangela yesikhathi eside yokugqwala, ukuqina kwamafutha noma ukuxega kwamabholithi axege kuzokwenza umkhawulo unganembile, okuholela ekuvuzeni kwangaphakathi;

⑨ Ukuma kwevalvu ye-actuator kagesi kuya phambili, okungahlobene nendawo okubangela ukuvuza kwangaphakathi;

⑩ ukuntuleka kokugcinwa nokugcinwa ngezikhathi ezithile, okuholela ekuvaleni amafutha omile, aqinile, omisiwe omisiwe aqoqana esihlalweni sevalvu enwebekayo, okuvimbela ukunyakaza kwesihlalo se-valve, okuholela ekuhlulekeni kophawu.

I-ZFA Valve Factory inamaqembu aqeqeshiwe e-QC ukuqinisekisa ukuthi i-valve yefekthri ngayinye ngaphakathi nokubukeka kuzwakala. Ngesikhathi esifanayo, sinobuchwepheshe obuchwepheshile kanye namaqembu angemuva kokuthengisa ukusiza amakhasimende ukuxazulula izinkinga ezihlukahlukene okuhlangatshezwane nazo phakathi nokufakwa nokusebenzisa.