1. Thevalavu ya mpiraamapangidwa kuchokera ku valavu ya pulagi.Gawo lake lotsegula ndi lotseka limakhala ngati gawo, lomwe limagwiritsa ntchito gawoli kuti lizizungulira madigiri a 90 mozungulira tsinde la valve kuti likwaniritse cholinga chotsegula ndi kutseka.
2. Ntchito ya valve ya mpira
Vavu ya mpira imagwiritsidwa ntchito kwambiri podula, kugawa ndikusintha njira yoyendetsera sing'anga mu payipi.Valve ya mpira yopangidwa ngati kutsegulira kwa V imakhalanso ndi ntchito yabwino yosinthira kuyenda.
Valve ya mpira sikuti imangokhala yophweka, imayendetsa bwino kusindikiza, komanso kukula kwake kochepa, kulemera kwake, kutsika kwa zinthu zakuthupi, kakulidwe kakang'ono kakuyika, ndi kakang'ono pakuyendetsa torque mkati mwa ndime inayake.Ndizosavuta kugwiritsa ntchito komanso zosavuta kukwaniritsa kutsegulira ndi kutseka mwachangu.Imodzi mwa mitundu ya valve yomwe ikukula kwambiri m'zaka zopitilira khumi.Makamaka m'mayiko otukuka monga United States, Japan, Germany, France, Italy, West, ndi Britain, kugwiritsa ntchito ma valve a mpira ndi kwakukulu kwambiri, ndipo kusiyanasiyana ndi kuchuluka kwa ntchito kukupitiriza kukula.Moyo, machitidwe abwino kwambiri oyendetsera ntchito ndi chitukuko chamitundu yambiri ya valve, kudalirika kwake ndi zizindikiro zina zogwirira ntchito zafika pamtunda wapamwamba, ndipo zasintha pang'ono ma valve a zipata, ma valve oyimitsa, ndi ma valve oyendetsa.
Ndi kupita patsogolo kwa ukadaulo wa ma valve a mpira, pakanthawi kochepa, padzakhala kugwiritsa ntchito kwambiri mapaipi amafuta ndi gasi, mayunitsi oyenga mafuta ndi osweka, komanso mafakitale anyukiliya.Kuphatikiza apo, ma valve a mpira adzakhalanso amodzi mwa mitundu yotsogola ya ma valve mu ma calibers akulu ndi apakatikati komanso minda yotsika komanso yapakatikati m'mafakitale ena.
3 ubwino wa valavu mpira
Ili ndi kukana kotsika kwambiri (kwenikweni ziro)
Chifukwa sichidzakakamira panthawi yogwira ntchito (popanda mafuta), itha kugwiritsidwa ntchito modalirika kuzinthu zowonongeka komanso zamadzimadzi otentha.
Pazovuta zazikulu ndi kutentha, chisindikizo chathunthu chikhoza kupezedwa.
Itha kuzindikira kutseguka ndi kutseka mwachangu, ndipo nthawi yotsegulira ndi kutseka yazinthu zina ndi 0.05-0.1s zokha kuti zitsimikizire kuti zitha kugwiritsidwa ntchito pamakina opangira benchi yoyesera.Potsegula ndi kutseka valavu mwamsanga, palibe kugwedezeka pakugwira ntchito.
Mapangidwe a valve ya mpira
Sing'anga yogwirira ntchito imasindikizidwa modalirika mbali zonse ziwiri.
Mukatsegulidwa kwathunthu ndi kutsekedwa kwathunthu, malo osindikizira a mpira ndi mpando wa valve amasiyanitsidwa ndi sing'anga, kotero sing'anga yomwe imadutsa mu valve pa liwiro lalikulu sichidzachititsa kukokoloka kwa malo osindikizira.
Ndi mawonekedwe ophatikizika komanso kulemera kwake, imatha kuonedwa ngati njira yabwino kwambiri yamavavu yamakina a cryogenic media.
Thupi la valavu ndi lofanana, makamaka pamene mawonekedwe a valavu ali ndi welded, omwe amatha kupirira kupsinjika kwa payipi.
Chidutswa chotseka chingathe kupirira kusiyana kwakukulu kothamanga pamene chatsekedwa.
Valavu ya mpira yokhala ndi thupi lopangidwa bwino imatha kukwiriridwa pansi, kuti mbali zamkati za valavu zisawonongeke, ndipo moyo wautali wautumiki ukhoza kufika zaka 30.Ndiwo valavu yabwino kwambiri yamapaipi amafuta ndi gasi.
Chifukwa valavu ya mpira ili ndi zabwino zomwe zili pamwambazi, zimakhala ndi ntchito zambiri.Vavu ya mpira ingagwiritsidwe ntchito ku: ndime yodziwika bwino imachokera ku 8mm mpaka 1200mm.
Kuthamanga mwadzina kumachokera ku vacuum mpaka 42MPa ndipo kutentha kwa ntchito kumachokera ku -204 ° C mpaka 815 ° C.