Valavu ya butterfly yoyendetsedwa ndi hydraulic controlled slow closing check butterfly ndi chipangizo chapamwamba chowongolera mapaipi kunyumba ndi kunja. Chimayikidwa makamaka pamalo olowera turbine a siteshoni ya hydropower ndipo chimagwiritsidwa ntchito ngati valavu yolowera turbine; Kapena chimayikidwa mu malo osungira madzi, magetsi, madzi ndi malo otulutsira madzi, m'malo mwa valavu yowunikira ndi valavu ya chipata. Ikagwira ntchito, valavu imagwirizana ndi injini yayikulu ya payipi, malinga ndi mfundo ya njira yosinthira ya hydraulic, ndipo kudzera mu njira zotsegulira ndi kutseka zomwe zakonzedweratu, imatha kuzindikira kudula kodalirika kwa payipi, kuchotsa bwino nyundo yamadzi mu payipi, ndikuchita gawo loteteza chitetezo cha dongosolo la mapaipi.

Mfundo yogwirira ntchito

Mphamvu yotseka yosungidwa ya valavu ya gulugufe yolemera ya hydraulic control yotseka pang'onopang'ono ndi mphamvu ya mphero yolemera, yomwe imagawidwa m'magulu awiri: valavu ya gulugufe yolemera yokhazikika yosunga mphamvu ya hydraulic control yotseka pang'onopang'ono (pano imatchedwa mtundu wosunga mphamvu ya mphero yolemera) ndi valavu ya gulugufe yotseka yolemera yokhazikika yosunga mphamvu ya hydraulic control yotseka pang'onopang'ono (pano imatchedwa mtundu wotseka wa mphero yolemera). Mikhalidwe ya ntchito ikuphatikizapo mkhalidwe wa pampu ya centrifugal, mkhalidwe wa pampu ya axial flow ndi mkhalidwe wa turbine.

Momwe pampu ya centrifugal imagwirira ntchito yokhala ndi valavu yotseguka (kuphatikiza pampu yosakanikirana ya centrifugal): yambani pampu kaye, ndikutsegula valavu mutachedwetsa nthawi yomwe mwakonza.

Momwe ntchito ya pampu yolumikizira mpweya ya valve yotseguka (kuphatikiza pampu yolumikizira mpweya ya axial): tsegulani valavu ya pampu nthawi yomweyo, kapena tsegulani valavuyo pa ngodya inayake kaye, kenako yambani pompoyo.

Momwe turbine yotsegulira ma valve imagwirira ntchito: choyamba tsegulani valavu yodutsa kuti muyeretse mphamvu, kenako tsegulani valavu, kenako tsegulani turbine.

Kawirikawiri amafunika kutseka valavu nthawi yomweyo pamene magetsi azima kapena alephera kugwira ntchito m'njira zosiyanasiyana.

Mfundo yoyambira yogwiritsira ntchito magetsi ndi ma hydraulic ndi iyi:

Potsegula valavu, valavu ya solenoid imabwerera m'mbuyo, pampu yamafuta imayamba, ndipo mafuta a hydraulic amalowa mu silinda yamafuta kudzera mu valavu yowongolera kuyenda ndi payipi yopanikizika kwambiri kuti akankhire pistoni ndikuyendetsa lever yolumikizidwa nayo kuti ikweze nyundo yolemera kuti itsegule valavu. Vavu ikatsegulidwa pamalo pake, makina osungira kuthamanga okha amayamba; Mota imapitiliza kuyitanitsa accumulator. Kupanikizika kukafika pamalo okhazikika a kuthamanga kwambiri, pampu yamafuta imayima. Nthawi yotsegulira valavu imatha kusinthidwa pozungulira gudumu lamanja la valavu yowongolera kuyenda, ndipo nthawi yosinthira ndi masekondi 10 ~ 90.

Pamene makinawo atuluka ndipo kuthamanga kwa mpweya kukutsika kufika pa malo otsika oikapo mphamvu, injini ya pampu ya mafuta imayamba yokha ndikuyima ikafika pamalo okwera oikapo mphamvu.

Mukatseka valavu, valavu ya solenoid imabwerera m'mbuyo, mafuta opanikizika omwe ali mu silinda yamafuta amabwerera ku thanki yamafuta kudzera mu valavu yothamanga komanso yocheperako yolumikizirana, payipi yothamanga kwambiri ndi valavu ya solenoid, nyundo yolemera imagwa pansi, ndipo ndodo yolumikizira imayendetsa mbale ya gulugufe kuti izungulire kuti itseke valavu, kuti ichepetse mwachangu madzi ambiri pafupifupi 70% ya kugunda kwapitako; 30% yomaliza ya kugunda imatsekedwa pang'onopang'ono. Ngodya yotseka mwachangu komanso pang'onopang'ono komanso nthawi yosungira gawo lililonse zitha kusinthidwa malinga ndi momwe payipi imagwirira ntchito kuti ichotse bwino nyundo yamadzi mupayipi; Nthawi yosinthira ndi masekondi awiri mpaka masekondi 25 kuti mutseke mwachangu komanso masekondi 6 mpaka masekondi 90 kuti mutseke pang'onopang'ono.

Potsegula ndi kutseka, valavu imatha kuyimitsidwa pamalo aliwonse apakati ndi batani loyimitsa. Kuyimitsa kumagwiritsidwa ntchito makamaka pokonza zolakwika pamakina.

Pampu yamanja imagwiritsidwa ntchito makamaka pokonza zolakwika pamakina. Ngati palibe magetsi kapena pampu yamafuta singagwire ntchito bwino, kugwedeza pampu yamanja kumathanso kumaliza kutsegula kwa valavu ndi kusunga mphamvu yamakina. Tsegulani valavu yoyimitsa yomwe nthawi zambiri imatsekedwa, pogwiritsa ntchito mphamvu ya hammer ndi hydrodynamic torque, ndodo yolumikizira imayendetsa mbale ya gulugufe kuti izungulire kuti itseke valavu.