Mfundo yogwira ntchito ya valavu yowongolera pneumatic

Valavu yowongolera pneumatic imatanthawuza valavu yolamulira pneumatic, yomwe imatenga mpweya ngati mphamvu, silinda ngati actuator, chizindikiro cha 4-20mA monga chizindikiro choyendetsa galimoto, ndikuyendetsa valavu pogwiritsa ntchito zipangizo monga magetsi a valve positioner, converter, solenoid valve ndi valavu yogwira, kotero kuti valve ipange zofanana kapena zoyenda, zoyendetsa ndi kayendedwe ka kayendetsedwe ka kayendetsedwe kake. wa sing'anga mapaipi angasinthidwe molingana.

Valavu yowongolera mpweya imakhala ndi ubwino wowongolera mosavuta, kuyankha mofulumira ndi chitetezo chamkati, ndipo ikagwiritsidwa ntchito pazochitika zoyaka ndi kuphulika, sikuyenera kutenga njira zina zowonetsera kuphulika.

Mfundo yogwira ntchito ya valavu yowongolera pneumatic:
Valavu yowongolera pneumatic nthawi zambiri imakhala ndi makina oyendetsa pneumatic ndikuwongolera kulumikizana kwa ma valve, kukhazikitsa ndi kutumiza. The actuator pneumatic akhoza kugawidwa m'mitundu iwiri: mtundu umodzi wochitapo kanthu komanso kawiri. Pali kasupe wobwerera mu actuator imodzi yokha, koma palibe masika obwerera pawiri zochita actuator. The actuator single actuator imatha kubwereranso kumalo otsegulira kapena kutseka kokhazikitsidwa ndi valavu pamene mpweya watayika kapena valavu ikulephera.

Njira yochitira valavu yowongolera pneumatic:
Kutsegula kwa mpweya (nthawi zambiri kutsekedwa) ndi pamene kuthamanga kwa mpweya pamutu wa nembanemba kumawonjezeka, valavu imasunthira kumbali yomwe ikuwonjezeka. Pamene kulowetsedwa kwa mpweya kukufika, valavu imakhala yotseguka. Momwemonso, mphamvu ya mpweya ikachepa, valavu imasunthira kumalo otsekedwa, ndipo pamene palibe mpweya wolowera, valavu imatsekedwa kwathunthu. Nthawi zambiri, timatcha valavu yotsegulira mpweya ngati valavu yotsekedwa.

Mayendedwe amtundu wotsekera mpweya (nthawi zambiri mtundu wotseguka) ndi wosiyana ndendende ndi mtundu wotsegulira mpweya. Kuthamanga kwa mpweya kumawonjezeka, valavu imayenda motsekedwa; pamene kuthamanga kwa mpweya kumachepa kapena ayi, valavu idzatsegulidwa kapena kutsegulidwa kwathunthu. Nthawi zambiri, timatcha valavu yoyang'anira gasi ngati valavu yotseguka

Kusiyanitsa ndi kusankha pakati pa valavu yapamwamba ya mpira ndi valavu ya mpira wamba
Mkulu nsanja valavu mpira, otchedwa mkulu nsanja valavu mpira, utenga is05211 kupanga muyezo, kuponyera lalikulu kapena kuzungulira flange ndi valavu mpira monga thupi, ndi mapeto nkhope ya nsanja ndi apamwamba kuposa m'mphepete akunja a flange pa malekezero onse awiri, amene si abwino unsembe wa pneumatic actuator, actuator magetsi actuator ndi valavu kwambiri ndi zipangizo zina. actuator, ndipo mawonekedwe ake ndi okongola komanso oyengeka.

Valavu yapamwamba ya mpira ndi chida chosinthika cha valavu wamba wamba wamba. Kusiyanitsa pakati pa valavu yapamwamba ya mpira ndi valavu ya mpira wamba ndikuti imatha kulumikizidwa mwachindunji ndi choyendetsa galimoto popanda kuwonjezera cholumikizira cholumikizira, pomwe valavu ya mpira wamba imatha kukhazikitsidwa ndi actuator pambuyo poyika bracket. Kuwonjezera pa kuchotsa zowonjezera zowonjezera zowonjezera, chifukwa zimayikidwa mwachindunji pa nsanja, kukhazikika pakati pa actuator ndi valve ya mpira kumakhala bwino kwambiri.

Ubwino wa valavu yapamwamba ya mpira ndikuti ukhoza kukhazikitsa mwachindunji pneumatic kapena actuator yamagetsi pa nsanja yake, pamene valavu ya mpira wamba imafuna kugwirizana kwa valavu yowonjezera, yomwe ingakhudze valavu yomwe ikugwiritsidwa ntchito chifukwa cha bulakete lotayirira kapena chilolezo chogwirizanitsa kwambiri. Valavu yapamwamba ya mpira sidzakhala ndi vutoli, ndipo ntchito yake imakhala yokhazikika pakugwira ntchito.

Posankha valavu yapamwamba ya mpira ndi valavu ya mpira wamba, mawonekedwe amkati a valavu yapamwamba ya mabiliyoni akadali mfundo yotsegula ndi kutseka, yomwe imagwirizana ndi valve wamba ya mpira. Kuphatikiza pa zabwino zomwe tazitchula pamwambapa, kutentha kwapakati kukakhala kokwera kwambiri, cholumikizira cholumikizira chiyenera kugwiritsidwa ntchito kuteteza kugwiritsiridwa ntchito kwanthawi zonse kwa actuator ndikuletsa actuator kuti asagwiritse ntchito chifukwa cha kutentha kwapakatikati.