Mukamagwiritsa ntchito valavu, nthawi zambiri pamakhala zovuta zina, kuphatikizapo valve yosatsekedwa njira yonse. Kodi nditani? Valavu yowongolera ili ndi mitundu yosiyanasiyana yotayikira mkati chifukwa cha mtundu wake wa mawonekedwe ovuta kwambiri. Lero, tikambirana mitundu isanu ndi iwiri yosiyanasiyana ya kutayikira kwa ma valve owongolera mkati ndikuwunika ndi kukonza iliyonse.

1. Vavu sinatseke mokwanira ndipo mawonekedwe a zero a actuator ndi olakwika.

Yankho:

1) Tsekani valavu pamanja (onetsetsani kuti yatsekedwa kwathunthu);

2) Tsegulaninso valavu pamanja, pokhapokha mphamvu yaying'ono singagwiritsidwe ntchito kuti mutembenuzire;

3) Tembenuzirani valavu motembenukira ku mbali ina;

4) Kenako, sinthani malire apamwamba.

2. Kukankhira kwa actuator sikukwanira.

Kukankhira kwa actuator sikukwanira chifukwa valavu ndi yamitundu yotsekera yolowera pansi. Pamene palibe kupanikizika, n'zosavuta kufika pamalo otsekedwa kwathunthu, koma pamene pali kupanikizika, kuwonjezereka kwamadzimadzi sikungathe kutsutsidwa, zomwe zimapangitsa kuti zikhale zosatheka kutseka kwathunthu.

Yankho: m'malo mwa high-thrust actuator, kapena sinthani kukhala spool yokwanira kuti muchepetse mphamvu yosagwirizana ya sing'anga.

3. Kutayikira kwamkati komwe kumadza chifukwa chosapanga ma valve owongolera magetsi

Chifukwa opanga ma valve samayang'anira mwamphamvu zida za valve, teknoloji yopangira makina, teknoloji ya msonkhano, ndi zina zotero panthawi yopanga, kusindikiza pamwamba sikunakhazikitsidwe pamtunda wapamwamba ndipo zolakwika monga pitting ndi trachoma sizimachotsedwa kwathunthu, zomwe zimapangitsa kuti pakhale kutuluka kwamkati. valavu yowongolera magetsi.

Yankho: Konzaninso malo osindikizira

4. Gawo lowongolera lamagetsi lamagetsi limakhudza kutulutsa kwamkati kwa valve.

Njira zowongolera makina, kuphatikiza kusintha kwa ma valve ndi ma torque, ndi njira yachikhalidwe yogwiritsira ntchito valavu yamagetsi. Malo a valve ndi osadziwika bwino, kasupe watha, ndipo mphamvu yowonjezera kutentha imakhala yosafanana chifukwa zinthu zowongolerazi zimakhudzidwa ndi kutentha kozungulira, kupanikizika, ndi chinyezi. ndi zochitika zina zakunja, zomwe zimachititsa kuti valavu yamagetsi iwonongeke mkati.

Yankho: sinthani malire.

5. Kutayikira kwamkati komwe kumabwera chifukwa cha zovuta za valve yowongolera magetsi

Ndizofanana kuti ma valve oyendetsa magetsi amalephera kutseguka atatsekedwa pamanja, zomwe zimachitika chifukwa cha kukonza ndi kusonkhana. Malo ochitirapo masinthidwe apamwamba ndi otsika angagwiritsidwe ntchito kusintha kugunda kwa valve yolamulira magetsi. Ngati sitiroko imasinthidwa yaying'ono, valavu yoyendetsera magetsi sidzatseka mwamphamvu kapena kutseguka; ngati sitiroko isinthidwa kukhala yayikulu, imayambitsa njira yodzitchinjiriza ya torque;

Ngati kusintha kwa torque kwachulukira, padzakhala ngozi yomwe ingawononge valavu kapena njira yochepetsera, kapena kuwotcha mota. Kawirikawiri, valavu yamagetsi itatha kusinthidwa, malo otsika otsika a chitseko cha magetsi amaikidwa ndi kugwedeza pamanja valavu yoyendetsera magetsi pansi, ndikuyigwedeza poyambira, ndipo malire apamwamba amaikidwa ndi pamanja. kugwedeza valavu yowongolera magetsi pamalo otseguka kwathunthu.

Choncho, valavu yoyendetsera magetsi sichingalepheretse kutsegula pambuyo potsekedwa mwamphamvu ndi dzanja, kulola chitseko chamagetsi kuti chitsegulidwe ndi kutseka momasuka, koma makamaka chidzachititsa kutuluka kwamkati kwa chitseko chamagetsi. Ngakhale valavu yamagetsi yamagetsi imayikidwa bwino, popeza malo osinthira malire amakhala okhazikika, sing'anga yomwe imawongolera imatsuka mosalekeza ndikuvala valavu pamene ikugwiritsidwa ntchito, zomwe zimabweretsanso kutulutsa kwamkati kuchokera kutseka kwa valve.

Yankho: sinthani malire.

6. Cavitation Kutuluka kwamkati kwa valve yoyendetsa magetsi kumayambitsidwa ndi dzimbiri za valve zomwe zimabweretsedwa ndi kusankha kolakwika kwa mtundu.

Kusiyanitsa kwa cavitation ndi kuthamanga kumalumikizidwa. Cavitation idzachitika ngati kusiyana kwenikweni kwapakati P kwa valve ndipamwamba kuposa kusiyana kwapakati pa PC kwa cavitation. Kuchuluka kwa mphamvu kumapangidwa panthawi ya cavitation pamene kuwira kuphulika, komwe kumakhudza mpando wa valve ndi pakati pa valve. Valavu yambiri imagwira ntchito mu cavitation kwa miyezi itatu kapena kucheperapo, kutanthauza kuti valavu imakhala ndi corrosion ya cavitation, zomwe zimapangitsa kuti mpando wa valve uwonongeke mpaka 30% ya kutuluka kwake. Zigawo zogwedeza zimakhala ndi zotsatira zowononga kwambiri. Kuwonongekaku sikungakonzedwe.

Choncho, zofunikira zenizeni za ma valve amagetsi zimasiyana malinga ndi zomwe akufuna. Ndikofunikira kusankha mavavu owongolera magetsi mwanzeru molingana ndi dongosolo.

Yankho: Kuti muwongolere ntchitoyi, sankhani valavu yowongolera masitepe angapo kapena yowongolera manja.

7. Kutuluka kwamkati chifukwa cha kuwonongeka kwapakati ndi kukalamba kwa valve yolamulira magetsi

Pambuyo pa kusinthidwa kwa valve yamagetsi, pakatha ntchito inayake, valavu yoyendetsa magetsi idzatsekedwa chifukwa sitiroko ndi yaikulu kwambiri chifukwa cha valve cavitating, kuphulika kwapakati, pakati pa valve ndi mpando watha, ndi kukalamba kwa zigawo zamkati. Kuwonjezeka kwa kutayikira kwa valve yolamulira magetsi ndi chifukwa cha zochitika za kuledzera. Kutayikira kwamkati kwa valve yowongolera magetsi kumakulirakulira pakapita nthawi.

Yankho: sinthani actuator ndikukonza ndikusintha pafupipafupi.