Asebenza kanjani ama-butterfly valves?

Butterfly valveiwuhlobo lwevalvu esebenzisa ingxenye yokuvula nokuvala idiski ukuze ibuyisele cishe u-90° ukuze ivule, ivale noma ilungise izinga lokugeleza kwendawo ephakathi. I-Butterfly valve ayinayo nje isakhiwo esilula, usayizi omncane, isisindo esincane, ukusetshenziswa kwezinto eziphansi, usayizi omncane wokufaka, i-torque encane yokushayela, ukusebenza okulula nokushesha, kodwa futhi inomsebenzi omuhle wokulawula ukugeleza kanye nezici zokuvala zokuvala, futhi ingenye yezinhlobo zama-valve ezikhula ngokushesha eminyakeni eyishumi edlule. Ama-valve ovemvane asetshenziswa kakhulu. Izinhlobonhlobo kanye nenani lokusetshenziswa kwayo kuyaqhubeka nokukhula, futhi kuthuthuke kumazinga okushisa aphezulu, ukucindezela okukhulu, ububanzi obukhulu, ukuqina okuphezulu, impilo ende, izici ezinhle kakhulu zokulawula, kanye nokusebenza okuningi kwe-valve eyodwa. Ukuthembeka kwayo nezinye izinkomba zokusebenza sezifinyelele izinga eliphezulu.

Ngokusetshenziswa kwerabha yokwenziwa engamelana namakhemikhali ukuzeizivalo uvemvane, ukusebenza kweizivalo uvemvaneisithuthukisiwe. Ngoba irabha yokwenziwa inezici zokumelana nokugqwala, ukumelana nokuguguleka, ukuzinza kobukhulu, ukuqina okuhle, ukubunjwa okulula, izindleko eziphansi, njll., irabha yokwenziwa enezakhiwo ezahlukene ingakhethwa ngokwezidingo ezahlukene zokusebenzisa ukuhlangabezana nezimo zokusebenzaizivalo uvemvane.

Ngenxa yokuthi i-polytetrafluoroethylene (PTFE) inokumelana nokugqwala okuqinile, ukusebenza okuzinzile, akulula ukuguga, i-coefficient ephansi yokungqubuzana, ukwakheka kalula, ukuzinza kwe-dimensional, futhi ingathuthukisa izici zayo eziphelele ngokugcwalisa nokwengeza izinto ezifanele, i-butterfly valve sealing material enamandla angcono kanye nemikhawulo ephansi yokungqubuzana kwe-polymer ingatholakala, futhi i-polymer syntheric coefficient ingatholakala, emelelwa yi-PTFE kanye nezinto zayo eziguquliwe zokugcwalisa zisetshenziswe kabanzi ku-valve ye-butterfly, ukuze ukusebenza kwe-valve butterfly kuye kwathuthukiswa nakakhulu.Ama-valve e-Butterflyngobubanzi obubanzi bamazinga okushisa nezingcindezi, ukusebenza okuthembekile kokubeka uphawu nempilo ende yesevisi yenziwe.

Ukuze kuhlangatshezwane nezidingo zezicelo zezimboni ezifana nokushisa okuphezulu nokuphansi, ukuguguleka okuqinile, nokuphila isikhathi eside, ama-valve ovemvane ophawu lwensimbi athuthukiswe kakhulu. Ngokusetshenziswa kokumelana nokushisa okuphezulu, ukumelana nokushisa okuphansi, ukumelana nokugqwala okuqinile, ukumelana nokuguguleka okuqinile, kanye ne-high-power alloy materials kuma-valve uvemvane, ama-valve ovemvane avalwe ngensimbi asetshenziswe kabanzi emikhakheni yezimboni ezifana nokushisa okuphakeme nokuphansi, ukuguguleka okuqinile, nokuphila isikhathi eside, nama-valve ovemvane ane-diameter enkulu (9~750mm), izinga lokushisa eliphakeme elingu-42. (-196 ~ 606 ° C) zivele, ukuze ubuchwepheshe be-butterfly valves bufinyelele ezingeni elisha.

Lapho i-valve ye-butterfly ivuliwe ngokugcwele, inokumelana nokugeleza okuncane. Uma ukuvulwa kuphakathi kuka-15 ° ~ 70 °, kungasetshenziswa ukulawula ukugeleza okubucayi, ngakho-ke ukusetshenziswa kwe-valve butterfly kuvame kakhulu emkhakheni wokulungiswa kobubanzi obukhulu.

Ngenxa yokunyakaza okusulekayo kwepuleti uvemvane uvemvane, amavalvu ovemvane amaningi angasetshenziselwa imidiya enezinto eziqinile ezimisiwe. Ngokuya ngamandla esigxivizo, ingabuye isetshenziselwe imidiya eyimpuphu kanye ne-granular.

Ama-valve e-butterfly afanele ukulawulwa kokugeleza. Ngenxa yokuthi ukuncipha kwengcindezi ye-valve uvemvane epayipini kukhulu uma kuqhathaniswa, cishe ngokuphindwe kathathu kune-valve yesango, lapho kukhethwa i-valve uvemvane, ithonya lokulahlekelwa kwengcindezi yesistimu yepayipi kufanele licatshangelwe ngokugcwele, namandla epuleti uvemvane ukuze athwale ukucindezela kwendawo yepayipi lapho livaliwe kufanele futhi kucatshangelwe. Ukwengeza, imikhawulo yezinga lokushisa lokusebenza lapho impahla yesihlalo se-elastomeric ingafakwa ngaphansi kwamazinga okushisa aphezulu kufanele futhi inakwe.

I-valve uvemvane inobude obuncane bokwakha kanye nobude bubonke, isivinini sokuvula nokuvala ngokushesha, nezici ezinhle zokulawula uketshezi. Isimiso sesakhiwo samavalve emvemvane sifaneleka kakhulu ekwenzeni ama-valve amakhulu. Lapho i-valve uvemvane kudingeka ukuba isetshenziselwe ukulawula izinga lokugeleza, kubalulekile ukukhetha usayizi olungile kanye nohlobo lwe-valve uvemvane ukuze lusebenze kahle nangempumelelo.

Ngokuvamile, ku-throttling, ukulawulwa kokulawula kanye nodaka, ubude besakhiwo bufushane, isivinini sokuvula nokuvala siyashesha, futhi ukunqanyulwa kwengcindezi ephansi (umehluko omncane wengcindezi) kuyadingeka, futhi i-valve butterfly iyanconywa. Ama-valve e-Butterfly angasetshenziswa uma kunokulungiswa kwezindawo ezimbili, isiteshi esincishisiwe sobubanzi, umsindo ophansi, i-cavitation kanye ne-vaporization, inani elincane lokuvuza emkhathini, kanye nemidiya ehlukumezayo. Ngaphansi kwezimo ezikhethekile zokusebenza, ukulungiswa kwe-throttling, noma ukuvalwa okuqinile, ukuguga okukhulu, izinga lokushisa eliphansi (cryogenic) nezinye izimo zokusebenza.