Kusiyanitsa pakati pa ma valve otsekera cheke ndi ma cheke chekeni ma valve makamaka kumadalira mulingo wa chete.Cheka valve yotsekerezakokha kuthetsa phokoso ndi kuchepetsa phokoso.Cheke valve cheteimatha kutchingira mwachindunji ndikuletsa phokoso likagwiritsidwa ntchito.
Ma valve opanda phokosoamagwiritsidwa ntchito kwambiri pamapaipi amadzi amadzi ndipo amayikidwa potuluka popopa madzi.Zimapangidwa ndi thupi la valve, chimbale cha valve, tsinde la valve, kasupe ndi zina.Kutsekera kotsekera ndi kwaufupi ndipo liwiro lothamanga ndilochepa panthawi yotseka.Chisindikizo cha valavu chimagwiritsa ntchito chisindikizo chofewa cha rabara, ndipo kubwerera kwa kasupe kumapangitsa kuti valavu itseguke ndi kutseka popanda kukhudza, kuchepetsa phokoso ndi nyundo yamadzi, choncho imatchedwa valavu yoyendera silencer.Chigawo chake cha valve chimatengera mawonekedwe okweza ndipo ndi mtundu wa valavu yonyamulira.
Kuletsa ma cheki ma valvezimayikidwa molunjika.Kwa ma valve owongolera a mbali ziwiri, amatha kuyikanso mopingasa.Komabe, kwa ma valve akuluakulu a diameter, kulemera kwake kwa diski ya valve kumakhala kwakukulu, zomwe zingapangitse kuvala kwa unilateral pamanja otsogolera, ndipo pazovuta kwambiri zimakhudza kusindikiza.Choncho, tikulimbikitsidwa kuyika vertically kwa mavavu akuluakulu.
Valavu yoyang'ana mwakachetechete imatchedwanso axial flow check valve, ndi chida chofunikira chomwe chimayikidwa potuluka pampu kapena kompresa kuteteza kubweza kwapakati.Chifukwa chakuti axial flow check valve ali ndi makhalidwe a mphamvu yothamanga kwambiri, kukana kwazing'ono, kayendedwe kabwino, kusindikiza kodalirika komanso kopanda nyundo yamadzi potsegula ndi kutseka.Imayikidwa pamalo olowera madzi a pampu yamadzi ndipo imatha kutsekedwa mwachangu madziwo asanabwerere., kupewa nyundo yamadzi, phokoso la nyundo yamadzi ndi zotsatira zowononga kuti mukwaniritse mwakachetechete.Chifukwa chake, amagwiritsidwa ntchito kwambiri pamapaipi amafuta ndi gasi akutali, malo opangira magetsi a nyukiliya, ma compressor ndi mapampu akulu muzomera zazikulu za ethylene, ndi zina zambiri.
Amapangidwa makamaka ndi thupi la valavu, mpando wa valve, chimbale cha valve, kasupe, ndodo yotsogolera, manja otsogolera, chivundikiro chowongolera ndi mbali zina.Mkati mwa thupi la valve, chivundikiro chowongolera, diski ya valve ndi malo ena oyendayenda ayenera kusinthidwa kuti agwirizane ndi mapangidwe a mawonekedwe a hydraulic, ndipo ayenera kuzunguliridwa kutsogolo ndikuloza kumbuyo kuti apeze njira yabwino yamadzi.Madzi amadzimadzi amachita makamaka ngati laminar ikuyenda pamwamba pake, popanda chipwirikiti chochepa kapena ayi.Mkatikati mwa thupi la valve ndi dongosolo la Venturi.Madziwo akamadutsa mumsewu wa valve, amachepa pang'onopang'ono ndikukula, kuchepetsa kubadwa kwa mafunde a eddy.Kutaya kwapakati ndi kochepa, kayendedwe ka kayendedwe kake kamakhala kokhazikika, palibe cavitation, ndi phokoso lochepa.
Ikhoza kukhazikitsidwa molunjika komanso molunjika.Pamene chiwombankhanga chachikulu chimayikidwa mozungulira, ndodo yotsogolera iyenera kutengera ndondomeko ya kalozera kawiri kuti zisawonongeke mopitirira muyeso kumbali imodzi ya mkono wotsogolera ndi ndodo yotsogolera chifukwa cha kulemera kwa diski ya valve.Izi zimapangitsa kuti ma valve osindikizira achepetse komanso phokoso liwonjezeke potseka.
Kusiyana pakati pa Kutsekereza ma valve ndi Silent check valves:
1. Mapangidwe a valve ndi osiyana.Mapangidwe a silencer check valve ndi ophweka, ndipo valavu yoyang'ana njira yothamanga imakhala ndi chikhalidwe chokhazikika.Mapangidwe a axial flow check valve ndi ovuta kwambiri.Mkatikati mwa thupi la valve ndi dongosolo la Venturi lomwe lili ndi kayendedwe ka kayendedwe kake mkati.Malo onse othamanga amawongolera.Kusintha kosalala kwa njira yoyendetsera kumachepetsa mitsinje ya eddy ndipo kumachepetsa bwino kukana koyenda.
2. Mapangidwe osindikizira a valve ndi osiyana.Valavu yoyang'anira silencer imatenga pakati pa mphira wotsekedwa ndi mphira, ndipo nsonga yonse ya valve imakutidwa ndi mphira, kapena mpando wa valve umasindikizidwa ndi mphete ya rabara.Ma valve oyendera ma axial amatha kugwiritsa ntchito zisindikizo zachitsulo zolimba komanso zowoneka bwino za alloy, kapena zofewa komanso zolimba zosindikizira.Malo osindikizira amakhala olimba kwambiri ndipo amawonjezera moyo wautumiki.
3. Mikhalidwe yogwirira ntchito ndi yosiyana.Ma valavu oyang'ana chete amagwiritsidwa ntchito kwambiri pamapaipi a kutentha kwanthawi zonse monga machitidwe amadzi, okhala ndi kukakamiza mwadzina PN10--PN25 ndi ma diameter DN25-DN500.Zida zimaphatikizapo chitsulo chosungunuka, chitsulo chosapanga dzimbiri, ndi chitsulo chosapanga dzimbiri.Ma valve oyendera ma axial amagwiritsidwa ntchito pazinthu zambiri, kuchokera ku gasi wachilengedwe wamadzimadzi pa kutentha kochepa kwa -161 ° C kupita ku nthunzi yotentha kwambiri.Kupanikizika mwadzina PN16-PN250, American muyezo Class150-Class1500.Diameter DN25-DN2000.