Muyenera kukhazikitsa valavu, koma kusankha mtundu wolakwika kungatanthauze maola owonjezera ntchito pambuyo pake. Kukonza kosavuta kungakukakamizeni kudula mapaipi ndikutseka dongosolo lonse.

Valovu yamagulu awiri ophatikizana imatha kuchotsedwa papaipi kuti ikonzedwe, pomwe valavu imodzi yamagulu sangathe. Izi zimapangitsa kuti mgwirizano wapawiri ukhale wapamwamba kwambiri pakukonza komanso ntchito yayitali.

Kutha kugwiritsa ntchito valavu mosavuta ndi chinthu chachikulu pamtengo wonse wa umwini. Ndi mutu wofunikira womwe ndimakambirana ndi anzanga ngati Budi, woyang'anira zogula ku Indonesia. Makasitomala ake, makamaka omwe ali m'mafakitale, sangakwanitse kupeza nthawi yayitali. Ayenera kusinthanitsa zisindikizo za valve kapena thupi lonse la valve mumphindi, osati maola. Kumvetsetsa kusiyana kwamakina pakati pa mapangidwe amodzi ndi awiri a mgwirizano kudzakuthandizani kusankha valavu yomwe imakupulumutsirani nthawi, ndalama, ndi mutu waukulu pamsewu.

Kodi pali kusiyana kotani pakati pa valavu ya mpira umodzi wa mgwirizano ndi valavu yamagulu awiri?

Mukuwona ma valve awiri omwe amawoneka ofanana koma ali ndi mayina ndi mitengo yosiyana. Izi zimakupangitsani kudabwa ngati njira yotsika mtengo ya mgwirizano umodzi ndi "yabwino mokwanira" pantchito yanu.

Mgwirizano wapawiri walumikiza zolumikizira mbali zonse ziwiri, kulola kuti zichotsedwe kwathunthu. Mgwirizano umodzi umakhala ndi cholumikizira chimodzi, kutanthauza kuti mbali imodzi imakhala yokhazikika, nthawi zambiri ndi simenti yosungunulira.

Taganizirani ngati kukonza tayala lagalimoto. Vavu yolumikizana pawiri ili ngati gudumu logwiridwa ndi mtedza; mutha kuchotsa gudumu lonse kuti mukonze. Valovu imodzi yolumikizana ili ngati gudumu lomangiriridwa ku ekseli mbali imodzi; simungathe kuchichotsa kuti mugwiritse ntchito. Mutha kulumikiza mbali imodzi ndikuichotsa panjira. Ngati valavu thupi lokha likulephera kapena muyenera kusintha zisindikizo, ndimgwirizano wapawiridesign ndi yabwino kwambiri. Makontrakitala a Budi amangogwiritsa ntchito ma valve awiri ogwirizana pazovuta kwambiri chifukwa amatha kusintha m'malo mwa mphindi zisanu osadula chitoliro chimodzi. Kamtengo kakang'ono kakang'ono kowonjezerapo kamalipiritsa koyambirira kofunikira.

Kodi pali kusiyana kotani pakati pa valavu imodzi ndi valavu iwiri?

Mumamva mawu ngati "valavu imodzi" ndi "vavu iwiri" ndikusokonezeka. Mukuda nkhawa kuti mwina mukutanthauzira molakwika za projekiti, zomwe zimabweretsa kuyitanitsa kolakwika.

"Vavu imodzi" nthawi zambiri imatanthawuza valavu yosavuta, imodzi yopanda mgwirizano. "Valavu iwiri" nthawi zambiri imakhala yofupikitsa ya "vavu yamagulu awiri," yomwe ndi gawo limodzi la valve lomwe lili ndi zolumikizira ziwiri.

Terminology ikhoza kukhala yovuta. Tiyeni tifotokoze bwino. "Vavu imodzi" mu mawonekedwe ake osavuta nthawi zambiri ndi "compact" kapenavalavu imodzi ya mpira. Ndi gawo losindikizidwa lomwe limamatiridwa mwachindunji mu payipi. Ndizotsika mtengo komanso zosavuta, koma ngati zikulephera, muyenera kuzidula. A "vavu iwiri" kapena "valavu iwiri ya mgwirizano” akutanthauza zinthu za ngwazi yathu: gawo la magawo atatu (malekezero awiri a mgwirizano ndi thupi lalikulu) lomwe limalola kuchotsedwa mosavuta. Ndikofunika kuti tisasokoneze izi ndi khwekhwe la “double block”, lomwe limaphatikizapo kugwiritsa ntchito ma valve awiri osiyana, odzipatula otetezeka kwambiri. unsembe uliwonse khalidwe.

Kufananiza kwa Valve Serviceability

Kodi pali kusiyana kotani pakati pa valavu ya mpira ya mtundu 1 ndi mtundu 2?

Mukuyang'ana pulani yakale kapena pepala la mpikisano ndikuwona "Type 1" kapena "Type 2" valve. Buku lachikale limeneli limapangitsa chisokonezo ndipo zimapangitsa kuti zikhale zovuta kuyerekeza ndi zinthu zamakono.

Awa ndi mawu akale. "Mtundu 1" nthawi zambiri umatanthawuza kapangidwe ka mavavu amtundu umodzi. "Mtundu wa 2" umatanthawuza kamangidwe katsopano kamene kamakhala kothandiza kwambiri, komwe kadasanduka mavavu amakono ogwirizana.

Ganizilani ngati "Mtundu 1" galimoto kukhala Model T ndi "Mtundu 2" kukhala galimoto yamakono. Malingaliro ndi ofanana, koma ukadaulo ndi kapangidwe kake ndizosiyana padziko lonse lapansi. Zaka makumi angapo zapitazo, makampaniwa adagwiritsa ntchito mawuwa kusiyanitsa mapangidwe a valve. Masiku ano, mawuwa nthawi zambiri satha, koma amatha kuwonekerabe pamapulani akale. Ndikawona izi, ndimafotokozera abwenzi ngati Budi kuti Pntek yathumavavu owona mpira wa mgwirizanondikusintha kwamakono kwa lingaliro la "Mtundu wa 2". Amapangidwa kuchokera pansi kuti azitha kuyika mipando mosavuta ndikusintha ndikuchotsa pamzere. Nthawi zonse muyenera kutchula "valvu ya mpira weniweni" kuti muwonetsetse kuti mukupeza chinthu chamakono, chotheka kutheka, osati chojambula chachikale kuchokera patsamba lazaka makumi angapo.

Kodi pali kusiyana kotani pakati pa mavavu a mpira a DPE ndi SPE?

Mumawerenga pepala laukadaulo lomwe limatchula mipando ya DPE kapena SPE. Ma acronyms awa akusokoneza, ndipo mukuwopa kuti kusankha kolakwika kungapangitse kuti paipi yanu ikhale yovuta kwambiri.

SPE (Single Piston Effect) ndi DPE (Double Piston Effect) amatanthawuza momwe mipando ya valve imagwirira ntchito pamene valavu yatsekedwa. SPE ndiye muyeso wa mavavu a PVC, chifukwa imangotulutsa mphamvu mosatetezeka.

Izi zimakhala zaukadaulo, koma lingaliro ndilofunikira pachitetezo. Mu valavu yotsekedwa, kupanikizika nthawi zina kumatha kutsekeka mkatikati mwa thupi.

• SPE (Piston Effect Imodzi):Uwu ndiye muyeso wamakampani wama valve a mpira wa PVC omwe amagwiritsidwa ntchito pafupipafupi. AnMpando wa SPEzisindikizo motsutsana ndi kuthamanga kuchokera kumtunda kwa mtsinje. Komabe, ngati kupanikizika kumawonjezekamkativalavu thupi, akhoza bwinobwino kukankhira kupyola mpando kunsi kwa mtsinje ndi mpweya. Ndi mapangidwe odzipumula okha.
• DPE (Double Piston Effect): A Mpando wa DPEakhoza kusindikiza motsutsana ndi kukakamizidwa kuchokeraonsembali. Izi zikutanthauza kuti zimatha kutsekereza kupanikizika m'thupi, zomwe zingakhale zoopsa ngati zikuwonjezeka chifukwa cha kuwonjezereka kwa kutentha. Mapangidwe awa ndi a ntchito zapadera ndipo amafunikira njira yosiyana yapabowo la thupi.

Pazinthu zonse zogwiritsira ntchito madzi, monga zomwe makasitomala a Budi ali nazo, mapangidwe a SPE ndi otetezeka komanso zomwe timapanga.Ma valve a Pntek. Imalepheretsa kuthamanga kowopsa kokhazikika.

Mapeto

Valavu yamagulu awiri ogwirizana ndiabwino kwambiri pamakina aliwonse omwe amafunikira kukonza, chifukwa amatha kuchotsedwa popanda kudula mapaipi. Kumvetsetsa kapangidwe ka valve kumatsimikizira kuti mumasankha bwino.