Choyambirira cha Sauer Danfoss Valves MCV116 Series

Valve ya MCV116 Pressure Control Pilot (PCP) ndi valavu yotsika mtengo yogwiritsidwa ntchito m'makina a electrohydraulic omwe amawongolera makina omwe amagwiritsidwa ntchito pomanga, ulimi, kusamalira zinthu, zam'madzi, migodi ndi mafakitale. Chipangizochi chapangidwa kuti chizitha kuwongolera ma valve oyendetsa oyendetsa (mavavu akuluakulu oyendera ma spool mu 5-50 gpm range), mapampu osinthira osinthika ndi ma mota ndi zida zina zilizonse zomwe zimayendetsedwa mosiyanasiyana. PCP ndi torque-motor actuated, double-nozzle flapper valve yomwe imapanga kusiyana kosiyana kofanana ndi chizindikiro cholowetsa magetsi. Ndi siteji imodzi, yoyimirira, yotsekedwa loop pressure control valve yomwe imagwiritsa ntchito mphamvu yamkati ya hydraulic

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Januware 7, 2019

PCP imavomereza dc yapano ndipo imapanga mphamvu yofananira ya hydraulic differential pressure. Onani Internal Workings Schematic. Zomwe zalowetsedwa zimawongolera siteji ya mota yama torque, netiweki ya mlatho wokhala ndi zida zomangidwira pa torsion pivot ndikuyimitsidwa panjira ya mpweya wa maginito. Maginito awiri okhazikika opangidwa molumikizana ndipo mbale yolumikizira imapanga chimango cha mlatho wa maginito.

Popanda kanthu, zida zankhondo zimakhazikika mumpata wa mpweya pakati pa mitengo yopingasa ya maginito potengera mphamvu ya maginito ndi akasupe apakati a null-adjust. Pamene mphamvu yolowera ikukwera, mapeto a armature amakhala okondera kumpoto kapena kum'mwera, kutengera komwe akuchokera. Kusuntha kwa zida zoyeserera kumatsimikiziridwa ndi kuchuluka kwa mphamvu zowongolera pano, kasupe kosalekeza komanso mphamvu zosiyanitsira zosiyanitsira (zomwe zimafuna kukhazikika kwa torque, monga tafotokozera pansipa). Linearity ya zolowetsa / zotuluka ubale ndi zosakwana 10% kudzera 80% ya ovotera panopa.

Januware 7, 2019

Kutulutsa kwa mlatho wa maginito, torque ya flapper, imayang'aniranso kuchuluka kwa mlatho wa hydraulic. Pa null, flapper imakhala pakati pa ma nozzles awiri. Kumtunda kuchokera pamphuno iliyonse pali tsinde lomwe limapereka kutsika kwapang'onopang'ono pamene dongosolo latha. Pakati pa nozzle ndi orifice kumbali iliyonse pali doko lowongolera. Pamene torque imasuntha chowotchacho kuchoka pamphuno imodzi kupita ku china, kupanikizika kwapadera kumabweretsa, mbali yapamwamba imakhala yomwe ili pafupi ndi flapper.

PCP ndi valavu yotsekera-loop pressure control valve yogwiritsa ntchito ma hydraulic pressure reaction mkati kuti ipange mayankho amkati. Ndi gawo lolowera kuchokera komwe lilipo, chowotchacho chimayamba kupita ku sitiroko yonse kuti atseke (cholamulidwa) cham'mbali mwake. Kuthamanga kwamadzi kumakwera mbali iyi ndikubwezeretsa chowotcha kuti chikhale chopanda kanthu. Pamene kutulutsa kwa torque kuchokera ku mota kumakhala kofanana ndi kutulutsa kwa torque kuchokera pakukakamira, dongosololi limakhala lofanana. Deferential pressure ndiye yolingana ndi kulamula panopa.