Kodi Check Valve ndi Chiyani?

What Is a Check Valve

Fufuzani mavavu amaikidwa pamapaipi kuti atetezere kubwerera. Valavu yokhotakhota kwenikweni ndi valavu yanjira imodzi, kuyenda kumatha kuyenda momasuka mbali imodzi, koma ngati mayendedwewo atembenuka, valavu idzatsekedwa kuti iteteze payipi, mavavu ena, mapampu, ndi zina zambiri. Ngati madzi amadzizungulira koma cheke valavu siyiyikidwa, nyundo yamadzi imatha kuchitika. Nyundo yamadzi nthawi zambiri imachitika mwamphamvu ndipo imatha kuwononga mosavuta mapaipi kapena zinthu zina.

Zinthu zoti muzisamalire mukamasankha valavu yowunika

Mukamasankha valavu y cheke, ndikofunikira kuchita kuwunika kopindulitsa pamachitidwe ena. Cholinga chachizolowezi ndikuchepetsa ndalama mukamapeza zotsika kwambiri zotayika, koma pama valve a cheke, chitetezo chokwanira chimafanana ndi kutaya kwapanikizika. Chifukwa chake, kuti tiwonetsetse dongosolo lotetezera ma valavu, makina aliwonse amafunika kuwunikidwa padera, ndipo zinthu monga chiopsezo cha nyundo yamadzi, kutaya mtima kovomerezeka, komanso zovuta zachuma zokhazikitsa valavu ziyenera kuganiziridwa ngati nyundo yamadzi.

Kuti muthe kusankha valavu yoyenera yantchito yanu, pali njira zambiri zomwe muyenera kuziganizira. Choyambirira, palibe mtundu umodzi wama valavu womwe ungasankhe bwino ntchito zonse, ndipo njira zosankhidwazo sizofunikanso mikhalidwe yonse.

Zina mwazomwe mungasankhe posankha valavu

Zinthu zina zomwe mungafunike kuziganizira ndizofanana ndi madzimadzi, mayendedwe, kutayika kwamutu, zosakhudza, komanso mtengo wonse wa umwini. Kuti mupeze magwiridwe antchito abwino, ndikofunikira kusankha valavu molingana ndi mawonekedwe amitundu yosiyanasiyana.

Zamadzimadzi

Ma valavu onse amagwiritsidwa ntchito pochizira madzi ndi madzi owonongeka, koma chithandizo cha madzi akuda / zimbudzi zitha kubweretsa mavuto. Mukasankha mavavu amadzimadzi awa, muyenera kulingalira momwe kupezeka kwa zolimba kumakhudzira magwiridwe antchito a valavu.

Makhalidwe oyenda

Ngati vavu yotseka yatseka mwachangu kwambiri, ndizotheka kupewa kuphulika. Komabe, kutseka msanga sikulepheretsa kuchuluka komwe kumachitika mpope ukuyamba ndikutseka. Valve ikatseguka (ndikutseka) mwachangu, kuthamanga kwake kudzasintha mwadzidzidzi ndipo kuthekera kwake kumachitika.

Kutaya mutu

Kutaya kwa valavu ndi ntchito yamathamangidwe amadzimadzi. Kutaya kwa valavu kumakhudzidwa ndimomwe zinthu zikuyendera komanso mawonekedwe amkati mwa valavu. Jometri la thupi la valavu ndi kapangidwe kotseka kamapangitsa malo kuyenda kudzera mu valavu motero zimakhudzanso kuwonongeka kwa mutu.

Kutayika kwamutu komwe kumaganiziridwa ndikuphatikizika kwa mutu wosasunthika (womwe umayambitsidwa ndi kusiyanasiyana kwakutali) ndi mutu wamkangano (woyambitsidwa ndi chitoliro ndi mkatikati mwa valavu). Pachifukwa ichi, pali njira zambiri zam'mutu wamagetsi ndi mtengo wake. Chofala kwambiri chikhoza kukhala kuyenda kokwanira kwa kuchuluka kwa madzi omwe amadutsa mu valavu ndikutsika kwakanthawi kwakanthawi. Koma poyerekeza, zimaganiziridwa kuti resistivity Kv ndiye chisankho chabwino kwambiri.

Mtengo wonse wa umwini

Mtengo wa valavu yanu ingaphatikizepo zambiri kuposa mtengo wogula. Kwa makhazikitsidwe ena, mtengo wofunikira kwambiri mwina kugula ndi kukhazikitsa, koma nthawi zina, kukonza kapena kugwiritsa ntchito mphamvu zamagetsi kumatha kukhala kofunikira kapena kofunikira kwambiri. Mukamagwiritsa ntchito mtengo ngati muyezo wosankha valavu, mtengo wake wonse pa valavu uyenera kuganiziridwa. Mwambiri, mawonekedwe a valavu amakhala osavuta, zimachepetsanso zofunikira pakukonza.

Zosakhala zopanda slam

Fufuzani valavu slam imapangitsa kuti makina azisinthasintha. Gawo loyamba munjirayi ndikubwezeretsa kutuluka pamene mpope uyima. Izi zimatha kuyambitsa kubwerera m'mbuyomu kudzera mu valavu asanafike potsekeka kwathunthu. Kenako kutsetsereka kotsekedwa kumatsekedwa, ndikusintha kwamayendedwe amasintha mphamvu zakuthambo kukhala madzi.

Slam imamveka ngati phokoso lomwe limapangidwa pomwe disc kapena mpira wa valavu imagunda mpando wa valavu, ndipo imapanga phokoso lalikulu. Komabe, phokosoli silimayambitsidwa ndi kutseka kwakuthupi, koma ndi mafunde amawu omwe amapangidwa ndi ma spikes omwe amakoka khoma lachitululu. Pofuna kupewa kugunda kwathunthu, valavu yoyang'ana iyenera kutsekedwa musanayambike velocity iliyonse. Tsoka ilo, izi sizinachitike. Jometri ya valavu imatsimikizira kuchuluka kwakumbuyo komwe kudzachitike, chifukwa chake valavu ikatseka mwachangu, kumenyedwa pang'ono.


Nthawi yamakalata: Meyi-14-2021