Ingxoxo yeButterfly Valve

Kwi-30s, iIbhotile yebhabhathaneyakhiwe eUnited States, yaziswa kwiJapan kwi-50s kwi-50s, kwaye yasetyenziswa ngokubanzi eJapan kwiminyaka engama-60, yaye yaphakanyiswa e-China emva kwe-70s emva kwe-70s emva kwe-70s. Okwangoku, i-butterfly valls ngaphezulu kwe-DN300 mm emhlabeni ithathe indawo yesango. Kuthelekiswa neI-valves yesango, i-vally yebhabhathane linexesha elifutshane lokuvulwa kunye nokuvalwa kweTorque, indawo encinci yokufakelwa kunye nobunzima bokukhanya. Ukuthatha i-DN1000 Njengomzekelo, ivalve yebhabhathane imalunga ne-2T, kwaye i-valve yesango imalunga ne-3.5T, kwaye ivalve yebhabhathane kulula ukudibanisa nezixhobo ezahlukeneyo, ngokuqiniseka.

Ukungancedi itywina lerabhaIbhotile yebhabhathaneNgaba loo nto xa isetyenziselwa ukuqaqamba, i-cavication iyakwenzeka ngenxa yokusetyenziswa okungalunganga, okuya kubangela isitulo serabha ukuba siphose kwaye sonakaliswe. Kwiminyaka yakutshanje, i-China ikwavelise nakwintsimbi yebhulethi yebhabhathane, kwaye kwiminyaka yakutshanje, iJapan iphinde yaqulunqa iivalves zebhabhathane elinebhotile, ingxolo ephantsi kunye nengxolo ephantsi.

Inkonzo yobomi besihlalo esiqhelekileyo sokutywina yiminyaka eli-15 ukuya kwengama-20 yerabha kunye ne-80-90 yentsimbi phantsi kweemeko eziqhelekileyo. Nangona kunjalo, indlela yokukhetha ngokuchanekileyo ixhomekeke kwiimfuno zeMeko yokuSebenza.

Ubudlelwane phakathi kokuvulwa kweIbhotile yebhabhathanekwaye ireyithi yokuhamba iyahambelana ngokusisiseko kunye nenqanaba. Ukuba isetyenziselwa ukulawula ireyithi yokuhamba, iimpawu zayo zokuhamba zihambelana ngokusondeleyo nokunganyangeki kwendlela yokuhamba, njengokufakelwa kweeveli ezifakwe kwimibhobho emibini kuyahlukile, kwaye inqanaba lokuhamba kwe-valve liya kwahluka kakhulu.

Ukuba ivalve ikwimeko yeflethi enkulu, umva weplate ye-valve ithambekele kuCavication, kwaye kukho into enokubangela ukuba iyonakalise ivalve, ngoko ke isetyenziswa ngaphandle kwe-15 °.

Xa ivalve yebhabhathane ikwindawo yokuvula ephakathi, imilo yokuvula eyenziwa nguivalveUmzimba kunye nomzimba ongaphambili weplate yebhabhathane igxile kwi-vall, kwaye la macala mabini abumba amanzi ahambayo, kwaye elinye icala lihamba ngendlela ehamba-hamba, kwaye elinye icala lifana kakhulu nomngxunya Ikhawuleza ngaphezu kwecala lendlela yokucinezela, kwaye uxinzelelo olubi luya kuveliswa phantsi kwevalve yecala elisecaleni, kwaye itywina lerabha lihlala liwa.

I-Torque eSebenzayo yeBhutely Valve, ngenxa yokuvula kunyekweniso lokuvula kunye nokuvula ivalve, ixabiso layo lahlukile, ngenxa ye-vatve yamanzi, iveliswe yi-vatve ye-varve, iveliswe ngumanzi wentloko engaphantsi kwe-valve engazange ityeshelwe. Ukongeza, xa i-elbow ifakwe kwindawo yokungena kwivalve, indawo yokuhamba iyenziwa, kwaye ukunyuka kwe-torque. Xa ivalve ikwindawo yokuvula ephakathi, indlela yokusebenza kufuneka ibe kukuzilalela ngenxa yesenzo sokuhamba kwamanzi.