Common Valve Knowledge II

1, valavu yanjira zitatu

Thupi la mavavu anjira zitatu lili ndi ma nozzles atatu, omwe ndi oyenera kuwongolera mapaipi amadzi amaloza atatu. Ambiri aiwo amagwiritsidwa ntchito pakuwongolera kutentha, kuwongolera chiŵerengero ndi kuwongolera njira yosinthira kutentha. Pogwiritsidwa ntchito, tiyenera kumvetsera kusiyana kwa kutentha kwamadzimadzi sikuyenera kukhala kwakukulu, kawirikawiri osachepera 150 C, apo ayi valavu ya njira zitatu idzakhala ndi nkhawa kwambiri, mwinamwake valavu ya njira zitatu idzakhala ndi nkhawa kwambiri ndipo imayambitsa kusokonezeka, chifukwa chake. mu kutayikira kapena kuwonongeka pa mphambano. Vavu yanjira zitatu ili ndi valavu yolumikizira njira zitatu ndi valavu yolowera njira zitatu. Valavu yolumikizira njira zitatu ndi sing'anga yomwe imalowa ndikutuluka m'madoko awiri olowera mutatha kusakanikirana. Valavu yolowera njira zitatu ndi sing'anga yomwe ikuyenda kuchokera kulowera kumodzi ndipo imagawidwa m'malo awiri.

2. Vavu ya Cam Flexure

Cam flexure valve, yomwe imadziwikanso kuti eccentric rotary valve, ili ndi tsinde lozungulira ngati fan, lomwe limaponyedwa mumodzi ndi mkono wopindika ndi manja ndikukhazikika pamtengo wozungulira. Dzanja lopotoka limatha kupangitsa kuti pakhale kuponderezedwa, komwe kumapangitsa kuti gawo lozungulira la valavu likhale lolumikizana kwambiri ndi mphete yapampando ndipo limagwira bwino ntchito yosindikiza. Lili ndi ubwino wa kulemera kwa kuwala, voliyumu yaying'ono, unsembe wosavuta, ndipo ndi yoyenera kuwongolera otaya sing'anga ndi mamasukidwe apamwamba komanso zinthu zoimitsidwa.

3. Direct Single Mpando Vavu

Pali mpando umodzi wokha ndi spool mu thupi la mpando umodzi wokha. Ubwino wake ndi mawonekedwe osavuta komanso kusindikiza bwino, ndipo ndi mtundu wa ma valve omwe amagwiritsidwa ntchito kwambiri. Choyipa chake ndikuti chimakhala ndi mphamvu yoyenda bwino komanso mphamvu yayikulu yosakwanira, yomwe siyenera kukakamizidwa kusiyanasiyana komanso nthawi zazikulu.

4. Direct Double Mpando Vavu

Pali mipando iwiri ndi ma spools mu thupi la valavu yokhala ndi mipando iwiri. Ubwino wake ndikuti mphamvu yomwe imagwira pamadzi apamwamba komanso otsika amadzimadzi imatha kusokonezana, kotero kuti valavu yokhala ndi mipando iwiri imakhala ndi kusiyana kwakukulu kovomerezeka. Choyipa ndichakuti ma spools apamwamba ndi apansi sayenera kutsekedwa nthawi yomweyo, chifukwa chake kutayikira kumakhala kwakukulu. Ndikoyenera kwa media zoyera zokhala ndi kusiyana kwakukulu pamalekezero onse a valve komanso kutsika kocheperako. Sikoyenera kukhudzika kwakukulu komanso nthawi yokhala ndi ulusi.