Kusintha kwa Valve Positioner:

Ma valve positioners akhoza kugawidwa mupneumatic valve positioners, electro-pneumatic Valve positioner ndi wanzeru valavu positioner malinga ndi kapangidwe kake ndi mfundo ntchito.
Choyimitsa valavu chimatha kuwonjezera mphamvu yotulutsa valavu yowongolera, kuchepetsa kufalikira kwa chizindikiro chowongolera, kufulumizitsa kusuntha kwa tsinde la valavu, kukonza mzere wa valavu, kuthana ndi kukangana kwa tsinde la valavu ndikuchotsa mphamvu ya valve. mphamvu yosagwirizana Kuti mutsimikizire malo olondola a valve yolamulira.

Ma Adapter a Valve Positioner:

Nthawi zambiri ntchito actuator pneumatic actuator, actuator magetsi, pali sitiroko molunjika, angular sitiroko.Pakuti basi, Buku kutsegula ndi kutseka mitundu yonse ya mavavu, mbale mphepo, etc.

Mfundo Yogwira Ntchito ya Valve Positioner:

Choyimira valavu ndicho chowonjezera chachikulu cha valve yolamulira.Zimatengera chizindikiro chosinthira tsinde la valve ngati chizindikiro choyezera mayankho, chimatenga chizindikiro chowongolera ngati chizindikiro chokhazikitsa, chimapitilira kufananiza, pomwe awiriwo asokonekera, amasintha chizindikiritso chake kukhala makina oyendetsa, amachititsa kuti olamulira achitepo kanthu. , makalata amodzi ndi amodzi pakati pa kusamutsidwa kangapo kwa tsinde la valve ndi chizindikiro chotuluka cha wolamulira chimakhazikitsidwa.Chifukwa chake, choyimira valavu chimakhala ndi chizindikiro choyezera tsinde la valavu kupita kumayendedwe owongolera owongolera.Zosintha zamakina owongolera ndizizindikiro zotuluka za choyika ma valve ku actuator.

Gulu la Ma Valve Positioners:

Vavu poyika molingana ndi chizindikiro cholowera amagawidwa kukhala pneumatic valve positioner ndi magetsi valve positioner.Chizindikiro cholowetsa choyimira ma valve pneumatic ndi chizindikiro chodziwika bwino cha gasi, mwachitsanzo, 20 ~ 100KPA chizindikiro cha mpweya, chizindikiro chake chotuluka ndi chizindikiro chokhazikika cha gasi.Chizindikiro cholowetsa chamagetsi chamagetsi ndi chizindikiro chapano kapena chamagetsi, monga 4 ~ 20mA siginecha yamakono kapena 1 ~ 5V siginecha yamagetsi, ndi zina zotere. Mu choyikapo chamagetsi chamagetsi chidzasinthidwa kukhala mphamvu yamagetsi, chizindikiro cha gasi chimatuluka pa kuyimba. valve control.
Malinga ndi malangizo a zochita akhoza kugawidwa mu njira imodzi valavu positioner ndi njira ziwiri valavu positioner.Pamene choyimitsira valavu cha njira imodzi chikugwiritsidwa ntchito mu choyimitsa cha Piston, choyimira valavu chimagwira ntchito njira imodzi yokha, ndipo choyikapo valavu cha njira ziwiri chimagwira mbali zonse za silinda ya piston actuator ndi mbali zonse ziwiri.

Malinga ndi kutulutsa kwa valavu ndi zizindikiro zopezera chizindikiro zimagawidwa kukhala choyimira valavu chabwino ndi choyika ma valve.Pamene chizindikiro cholowetsamo chowongolera cha valve chikukwera, chizindikiro chotuluka chimawonjezeka, kotero kuti phindu likhale labwino.Pamene chizindikiro cholowetsa choyimira chotsutsana ndi Valve chikuwonjezeka, chizindikiro chotuluka chimachepetsedwa ndipo, chifukwa chake, phindu ndilolakwika.

Malingana ndi chizindikiro cholowera cha valve ndi chizindikiro cha analogi kapena chizindikiro cha digito, chikhoza kugawidwa m'magulu onse a valve ndi malo opangira magetsi a basi.Chizindikiro cholowera cha general valve positioner ndi kuthamanga kwa mpweya wa analogi kapena siginecha yapano ndi yamagetsi, ndipo chizindikiro cholowera chamagetsi amagetsi a basi ndi chizindikiro cha digito cha basi yakumunda.

Malingana ndi ngati choyika ma valve ndi CPU chikhoza kugawidwa kukhala choyimira chamagetsi chamagetsi ndi chanzeru chamagetsi chamagetsi.Ma valve oyendetsa magetsi ambiri alibe CPU, choncho alibe nzeru ndipo sangathe kugwira ntchito zanzeru.Makina anzeru a valve okhala ndi CPU amatha kugwira ntchito mwanzeru, mwachitsanzo, amatha kulipira malipiro osagwirizana ndi njira yopita patsogolo, ndi zina zotero. .