Chiyambi chakugwiritsa ntchito, zinthu zazikuluzikulu ndi mawonekedwe a mawonekedwe a valve yoyang'ana kabati

Onani valavu amatanthauza valavu yomwe imatsegula ndi kutseka chitseko cha valve podalira kutuluka kwa sing'angayo kuti iteteze kubwerera kwa sing'anga, yomwe imadziwikanso kuti.chekeni valavu, valavu ya njira imodzi, valavu yobwerera kumbuyo ndi valavu yothamanga kumbuyo. Thechekeni valavundi valavu yodziwikiratu yomwe ntchito yake yayikulu ndikuletsa kubwereranso kwa sing'anga, kuzungulira kwapampopi ndi mota yoyendetsa, komanso kutulutsa sing'anga mu chidebe. Ma valve owunika atha kugwiritsidwanso ntchito pamizere yopereka makina othandizira pomwe kupanikizika kumatha kukwera pamwamba pa kukakamiza kwa dongosolo.

1.Tamagwiritsa ntchito valavu yowongoka:

Thechekeni valavu imayikidwa mu dongosolo la mapaipi, ndipo ntchito yake yaikulu ndikuletsa kubwereranso kwa sing'anga. Thechekeni valavundi valavu yodziwikiratu yomwe imatsegulidwa ndikutsekedwa kutengera kuthamanga kwapakati.Valve yoyang'ana wafer ndi oyenera kuthamanga mwadzina PN1.0MPa ~ 42.0MPa, Class150 ~ 25000; m'mimba mwake mwadzina DN15 ~ 1200mm, NPS1/2~48; Kubwerera kwapakati. Posankha zipangizo zosiyanasiyana, angagwiritsidwe ntchito zosiyanasiyana TV monga madzi, nthunzi, mafuta, asidi nitric, asidi acetic, wamphamvu oxidizing sing'anga ndi uric acid.

2.Tiye chuma chachikulu chavalve yoyang'ana pansi:

Pali mpweya zitsulo, otsika kutentha zitsulo, wapawiri gawo zitsulo (F51/F55), titaniyamu aloyi, zotayidwa mkuwa, INCONEL, SS304, SS304L, SS316, SS316L, chrome molybdenum zitsulo, Monel (400/500), 20# aloyi, Hastelloy ndi zinthu zina zachitsulo.

3. Mapangidwe a mawonekedwe avalve yoyang'ana pansi:

A. Kutalika kwapangidwe ndi kochepa, ndipo kutalika kwake ndi 1/4 ~ 1/8 chabe ya valavu yoyendera flange.

B. Kukula kwakung'ono ndi kulemera kwake, kulemera kwake ndi 1/4 ~ 1/20 chabe ya valavu yachikhalidwe ya flange

C. Disiki ya valve imatseka mwamsanga ndipo kuthamanga kwa nyundo yamadzi kumakhala kochepa

D. Mapaipi onse opingasa kapena mipope yowongoka angagwiritsidwe ntchito, yosavuta kukhazikitsa

E. Njira yothamanga ndi yosalala ndipo kukana kwamadzimadzi kumakhala kochepa

F. Kuchita tcheru ndi ntchito yabwino yosindikiza

G. Kuyenda kwa disc ya valve ndikwaufupi ndipo mphamvu yotseka yotseka ndiyochepa

H. Mapangidwe onse ndi ophweka komanso osakanikirana, ndipo mawonekedwe ake ndi okongola

I. Moyo wautali wautumiki ndi ntchito yodalirika

4.TZolakwika zomwe zimachitika pa cheki valve ndi:

A. Vavu disc yathyoka

Kupsyinjika kwa sing'anga isanayambe ndi itatha valavu ya cheke ili pafupi ndi malire ndi "mawona" ogwirizana. Disiki ya valve nthawi zambiri imamenyedwa ndi mpando wa valve, ndipo diski ya valve yopangidwa ndi zinthu zina zowonongeka (monga chitsulo choponyedwa, mkuwa, ndi zina zotero) imasweka. Njira yodzitetezera ndiyo kugwiritsa ntchito valavu yowunikira yokhala ndi diski ngati ductile.

B. Kubwerera kwapakati

Malo osindikizira awonongeka; zonyansa zatsekeredwa. Mwa kukonza malo osindikizira ndi kuyeretsa zonyansa, kubwerera kumbuyo kungalephereke.