Iivalve zebhabhathanezikho kuyo yonke indawo kwizicelo zemizi-mveliso kwaye ziyinxalenye ebalulekileyo yokulawula ukuhamba kwamanzi ahlukeneyo kwimibhobho.Ingqwalasela ephambili xa ukhetha kwaye usebenzisa ivalve yebhabhathane luxinzelelo oluphezulu.Ukuqonda oku kulinganisa kubalulekile ekuqinisekiseni ukusebenza okukhuselekileyo nokusebenzayo kweenkqubo zolwelo.
Kweli nqaku, siza kungena kwingqikelelo yomgangatho woxinzelelo oluphezulu olunokuthi ivalve yebhabhathane imelane, kwaye sifunde impembelelo kuxinzelelo olulinganisiweyo oluvela kwimiba efana noyilo lwevalve yebhabhathane, izinto eziphathekayo, ukutywinwa, njl.
Loluphi olona xinzelelo luphezulu?
Iqondo eliphezulu loxinzelelo lwevalve yebhabhathane libhekisa kuxinzelelo olukhulu apho ivalve yebhabhathane inokusebenza ngokukhuselekileyo ngaphandle kokungasebenzi kakuhle okanye ukuchaphazela ukusebenza.Oku kulandelayo zizinto ezininzi ezimisela umlinganiselo woxinzelelo oluphezulu lwevalve yebhabhathane
1. Imathiriyeli yevalvu yebhabhathane
Izinto ezisetyenziselwa ukwenza umzimba wevalve, ipleyiti yevalvu, isiqu sevalvu kunye nesitulo sevalvu zezona zinto ziphambili ekumiseleni umlinganiselo woxinzelelo lwevalve yebhabhathane.Izinto eziphathekayo ezinamandla amakhulu, ukuxhathisa kwe-corrosion kunye nokuzinza kweqondo lokushisa kunokumelana noxinzelelo oluphezulu.Umzekelo, iivalve zebhabhathane zensimbi engenasici zinokumelana noxinzelelo oluphezulu ngenxa yokumelana nokugqwesa kwazo okugqwesileyo kunye namandla.
Iisihlalo sevalveizinto zokutywinakuya kuchaphazela amandla okuthwala uxinzelelo lwevalve yebhabhathane.Umzekelo, i-EPDM, i-NBR, njl. zizinto eziqhelekileyo ezisetyenziswayo zokutywina irabha, kodwa amandla abo okuthwala uxinzelelo anqongophele.Kwizicelo ezifunekayo ukumelana noxinzelelo oluphezulu, ezinye izinto zokutywina ezikwazi ukumelana noxinzelelo zingakhethwa.
2. Ubume bevalve yebhabhathane
Ukwakhiwa kwevalve yebhabhathane yenye into ebalulekileyo echaphazela uxinzelelo lwevalve yebhabhathane.Ngokomzekelo, i-valve yebhabhathane ye-centerline-soft-sealing butterfly isetyenziswa ngokubanzi kwiinkqubo zoxinzelelo oluphantsi, oko kukuthi, i-PN6-PN25.Uyilo lwevalve yebhabhathane ephindwe kabini luphucula ukusebenza kokutywina ngokuguqula ubume bepleyiti yebhabhathane kunye nesitulo sevalvu ukumelana noxinzelelo olukhulu.
3. Ubukhulu bodonga lwevalvu yebhabhathane
Kukho ubudlelwane obulinganayo phakathi kobukhulu bodonga lomzimba wevalvu kunye noxinzelelo.Ngokuqhelekileyo ubukhulu beqondo loxinzelelo lwevalve, ngokukhona umzimba wevalve yebhabhathane ungqiyama ukukhawulelana nemikhosi esetyenziswayo xa uxinzelelo lolwelo lusanda.
4. Imigangatho yoyilo lwevalvu yebhabhathane
Imigangatho yoyilo lwevalve yebhabhathane iya kuchaza olona xinzelelo luphezulu inokumelana nayo.Iivalvu zebhabhathane zenziwe ngokuthobela i-API (i-American Petroleum Institute), i-ASME (i-American Society of Mechanical Engineers), i-ISO (i-International Organisation for Standardization) kunye neminye imigangatho yoshishino, kwaye ivavanywa ngokungqongqo kunye nokuhlolwa ukuqinisekisa ukuba ivalve yebhabhathane ihlangabezana nemimiselo echaziweyo. inqanaba loxinzelelo.
Ngaba iivalvu zebhabhathane zilungile kuxinzelelo oluphezulu?
Iivalve zebhabhathane zinokohlulwa zibe zivacuum butterfly valves, i-low-pressure butterfly valves, medium-pressure butterfly valves, kunye ne-high-pressure butterfly valves ngokoxinzelelo lwegama.
1).Ivacuum butterfly valve—isivalo sebhabhathane esinoxinzelelo oluphantsi kunoxinzelelo oluqhelekileyo lomoya.
2).Ibhabhathane elinoxinzelelo oluphantsiivalve-ivalve yebhabhathane ene-PN yoxinzelelo lwegama elingaphantsi kwe-1.6MPa.
3).Ivalve yebhabhathane yoxinzelelo oluphakathi-ivalve yebhabhathane enoxinzelelo lwegama PN 2.5 ~ 6.4MPa.
4).Ivalve yebhabhathane enoxinzelelo oluphezulu-ivalve yebhabhathane enoxinzelelo lwegama PN10.0 ~ 80.0MPa.
Olona xinzelelo luphezulu lwevalve yebhabhathane lufana nje nefuthe leplate emfutshane yebhakethi.Umthamo wamanzi uxhomekeke kwipleyiti emfutshane.Kuyafana nakwixabiso eliphezulu loxinzelelo lwevalve yebhabhathane.
Ngoko ke sinquma njani umlinganiselo ophezulu woxinzelelo?
Inkqubo yokumisela iqondo loxinzelelo oluphezulu lwevalve yebhabhathane luluhlu lweemvavanyo ezenziwa ngumenzi ukuvavanya ukusebenza kwevalve kunye nokuqinisekisa ubungakanani boxinzelelo lwayo.Olu vavanyo lungabandakanya:
1. Uhlalutyo lwezinto
Qhuba uhlalutyo lwe-metallographic kumacandelo evalve yebhabhathane ukuqinisekisa iipropathi zezinto eziphathekayo, kwaye wenze iimvavanyo zoomatshini ukuqinisekisa ukuba ivalve yebhabhathane iyahlangabezana nemigangatho emiselweyo yokomelela, ukudumba, njl.njl.
2. Uvavanyo lwe-Hydrostatic
Ivalve iphantsi koxinzelelo lolwelo olungaphaya koxinzelelo oluphezulu olulinganisiweyo (ngokuqhelekileyo kumaqondo obushushu asezantsi okanye anyukileyo) ukuvavanya imfezeko yesakhiwo kunye nokusebenza kokutywinwa.
1).Ukulungiselela phambi kovavanyo
Ngaphambi kokwenza uvavanyo lwe-butterfly valve hydraulic, la malungiselelo alandelayo kufuneka enziwe:
a)Jonga ukuthembeka kwezixhobo zovavanyo ukuqinisekisa ukuba uvavanyo lunokwenziwa ngokukhuselekileyo nangesiqhelo.
b)Qinisekisa ukuba ivalve yebhabhathane ifakwe ngokuchanekileyo kwaye udibaniso nomatshini wokulinganisa uxinzelelo luvalwe kakuhle.
c)Khetha impompo yamanzi enoxinzelelo olufanelekileyo ukuqinisekisa ukuba uxinzelelo lovavanyo kunye nesantya sokuhamba kuyahlangabezana neemfuno.
d)Susa inkunkuma enokuthi ichaphazele iziphumo zovavanyo ngexesha lovavanyo kwaye uqinisekise ukuba indawo yovavanyo icocekile kwaye icocekile.
2).Amanyathelo ovavanyo
a)Okokuqala vala ivalve kwivalve yebhabhathane, emva koko uvule impompo yamanzi, kwaye ngokuthe ngcembe wandise uxinzelelo lwamanzi ukufikelela kuxinzelelo lovavanyo.
b)Gcina uxinzelelo lovavanyo kangangexesha elithile kwaye ujonge ukuba kukho ukuvuza okujikeleze ivalve yebhabhathane.Ukuba kukho ukuvuza, kufuneka kulungiswe kwangethuba.
c)Emva kwexesha lokuvavanya, ukunciphisa ngokuthe ngcembe uxinzelelo lwamanzi kwaye uhlambulule i-valve yebhabhathane kunye nomatshini wokulinganisa uxinzelelo ukuze ugweme amabala amanzi emva kovavanyo.
3).Iindlela zovavanyo
Kukho ikakhulu ezi ndlela zilandelayo zovavanyo lwe-hydraulic valve yebhabhathane:
a)Indlela yokuvavanya uxinzelelo oluzinzileyo: Misa impompo yamanzi, gcina uxinzelelo lovavanyo lweeyure ezi-1-2, kwaye ujonge ukuba kukho ukuvuza okujikeleze ivalve yebhabhathane.
b)Indlela yokuvavanya uxinzelelo lweDynamic: Ngelixa ugcina uvavanyo kunye noxinzelelo, vula ivalve yebhabhathane, jonga ukuba ivalve isebenza ngokwesiqhelo, kwaye ujonge ukuba kukho ukuvuza okujikeleze kuyo.
c)Uvavanyo loxinzelelo lomoya: Faka uxinzelelo lomoya okanye igesi kwivalve yebhabhathane ukulinganisa iimeko zokusebenza kwaye uvavanye impendulo yayo ekuguquguqukeni koxinzelelo ukuze kuqinisekiswe ukusebenza okuthembekileyo phantsi kweemeko ezinamandla.
d)Uvavanyo lokuhamba ngebhayisikile: Ivalve yebhabhathane ijikeleza ngokuphindaphindiweyo phakathi kweendawo ezivulekileyo nezivaliweyo phantsi kweemeko ezahlukeneyo zoxinzelelo ukuvavanya ukuqina kwayo kunye nokutywinwa kokuthembeka.
Kutheni umisela umlinganiselo ophezulu woxinzelelo lwevalve yebhabhathane?
Ukumisela umlinganiselo ophezulu woxinzelelo kukuvumela ukuba ukhethe i-valve ye-butterfly efanelekileyo kwisicelo kwaye uqinisekisa ukusebenza okukhuselekileyo ngaphakathi kwemida yoxinzelelo oluchaziweyo.
1. Ukuhambelana kwesicelo
Khetha ivalve yebhabhathane eneqondo loxinzelelo olungaphezulu koxinzelelo oluphezulu lokusebenza olunokuthi lwenzeke kwisixokelelwano semibhobho ukuthintela ukugcwala kwevalve yebhabhathane.
2. Iingqwalasela zobushushu
Qwalasela utshintsho lobushushu kwisixokelelwano solwelo, kungekhona nje ngenxa yokwandiswa kwe-thermal kunye nokuncipha.Ukushisa okuphezulu kuya kubangela ukunyuka koxinzelelo lwe-fluid, kwaye ukushisa okuphezulu kuya kuchaphazela izinto eziphathekayo zevalve kunye nokunciphisa amandla okuphatha uxinzelelo.
3. UKhuseleko loTshintsho loxinzelelo
Faka izixhobo ezifanelekileyo zokunceda uxinzelelo okanye izicinezeli zokuthoba uxinzelelo kunye nokukhusela ivalve yebhabhathane kwizantya zoxinzelelo zesiquphe ezidlula umthamo wayo olinganiselweyo.
Isishwankathelo, olona xinzelelo luphezulu aivelufa butterflyinokumelana kumiselwa kuyilo, imathiriyeli, ulwakhiwo, kunye nendlela yokutywina.Ubungakanani boxinzelelo oluphezulu luyiparameter ebalulekileyo yokuqinisekisa ukusebenza okukhuselekileyo nokusebenzayo kweevalve zebhabhathane.Ngokuqonda izinto ezichaphazela ukulinganiswa koxinzelelo, indlela abazimisele ngayo, kunye nefuthe labo ekukhetheni i-valve ye-butterfly kunye nokusetyenziswa, i-valve ye-butterfly efanelekileyo inokukhethwa ngokuchanekileyo ukuqinisekisa ukhuseleko kunye nokusebenza kwevalve yebhabhathane ngexesha lokusetyenziswa.