Imiyalo yokukhetha i-valve

1. Ukukhethwa kwe-valve yesango

Ngokuvamile, ama-valve esango kufanele akhethwe.Ama-valve esango awafaneleki kuphela umusi, uwoyela kanye neminye imithombo yezindaba, kodwa futhi naphakathi okuqukethe izinto eziqinile ze-granular kanye ne-viscosity enkulu, futhi afanele ama-vent kanye nama-vacuum system valves aphansi.Kumidiya enezinhlayiya eziqinile, umzimba wevalvu yesango uzoba nembobo yokuhlanza eyodwa noma ezimbili.Ngokushisa okuphansi okuphakathi, i-valve ekhethekile yesango lokushisa eliphansi kufanele ikhethwe.

2. Incazelo yokukhethwa kwamavalvu embulunga  

Ivalvu yeglobhu ifanele izidingo zokumelana noketshezi lwepayipi, okungukuthi, ukulahlekelwa kwengcindezi akucatshangwa, futhi izinga lokushisa eliphezulu, ipayipi eliphakathi nomfutho ophezulu noma idivayisi, ifanele i-DN <200mm isitimu kanye namanye amapayipi abezindaba;Amavalvu amancane angakhetha i-valve yeglobhu, njenge-valve yenaliti, i-valve yensimbi, i-valve yesampula, i-valve gauge yokucindezela, njll. Ivalvu yeglobhu inokulawula ukugeleza noma ukulawulwa kwengcindezi, kodwa ukunemba kokulungisa akuphezulu, futhi ububanzi bepayipi buncane uma kuqhathaniswa. , kufanele ukhethe i-valve yeglobe noma i-throttle valve;Ukuze uthole medium enobuthi kakhulu, kuyafaneleka ukukhetha bellows sealed globe valve;Kodwa-ke, i-valve yembulunga akufanele isetshenziselwe okuphakathi nendawo ene-viscosity enkulu kanye ne-medium equkethe izinhlayiya kalula, futhi akufanele isetshenziselwe i-valve yokukhipha umoya kanye ne-vacuum system valve.

3, Byonke imiyalelo yokukhetha i-valve 

I-valve yebhola ifanele ukushisa okuphansi, ukucindezela okuphezulu, i-viscosity ye-medium.Ama-valve amaningi ebhola angasetshenziswa nezinhlayiya eziqinile ezimisiwe phakathi nendawo, ngokusho kwezidingo zezinto zokuvala zingasetshenziselwa impushana kanye nemidiya ye-granular;I-valve yebhola egcwele isiteshi ayifanele ukulawulwa kokugeleza, kodwa ifanele izikhathi ezidinga ukuvulwa nokuvala ngokushesha, okulungele ukufezeka kokunqanyulwa kwezingozi eziphuthumayo;Imvamisa ekusebenzeni kokuvala okuqinile, ukuguga, ukuncipha kweshaneli, ukuvulwa nokuvala isenzo ngokushesha, ukunqanyulwa kwengcindezi ephezulu (umehluko wengcindezi), umsindo ophansi, into ye-gasification, i-torque encane yokusebenza, ukumelana noketshezi oluncane epayipini, kunconyelwe ukusetshenziswa kwe-valve yebhola. ;I-valve yebhola ifanele isakhiwo sokukhanya, i-low pressure cut-off, imidiya egqwalayo;I-valve yebhola noma izinga lokushisa eliphansi, i-cryogenic medium iyi-valve ekahle kakhulu, i-valve yamapayipi aphakathi nendawo yokushisa ephansi kanye nedivayisi, kufanele isetshenziswe ne-valve ye-valve yokushisa okuphansi kwebhola;Ukukhethwa kwempahla yesihlalo se-valve ye-valve yebhola elintantayo kufanele kuthathe ibhola kanye nomthwalo ophakathi nendawo, i-valve enkulu yobubanzi bokusebenza idinga amandla amakhulu, i-DN≥200mm valvu yebhola kufanele ikhethwe ifomu lokudlulisela igiya lezikelemu;I-valve yebhola engaguquki ifanele ububanzi obukhulu kanye nezikhathi zokucindezela okuphezulu;Ngaphezu kwalokho, i-valve yebhola esetshenziselwa inqubo yezinto ezinobuthi obukhulu, ipayipi eliphakathi nendawo elivuthayo, kufanele libe nesakhiwo esingashi, esilwa ne-static.

4, Timiyalo yokukhetha i-valve ye-hrottle 

I-valve ye-Throttle ifanele ukushisa okuphakathi iphansi, izikhathi zokucindezela okuphezulu, ezifanele isidingo sokulungisa izingxenye zokugeleza nengcindezi, ayifanele i-viscosity futhi iqukethe izinhlayiya eziqinile ze-medium, hhayi njenge-valve yokuhlukanisa.

 

5, Pimiyalelo yokukhetha i-lug valve

I-valve yokuxhuma ifanele izikhathi zokuvula nokuvala ngokushesha, ngokuvamile ayifaneleki isitimu kanye nendawo yokushisa ephezulu, izinga lokushisa eliphansi, i-viscosity medium ephezulu, futhi ilungele okuphakathi nezinhlayiya ezimisiwe.

6, Bimiyalelo yokukhetha i-valve ye-utterfly

I-valve ye-Butterfly ifanele ububanzi obukhulu (njenge-DN>600mm) kanye nezidingo zobude besakhiwo esifushane, kanye nesidingo sokulawula ukugeleza kanye nezidingo zokuvula nokuvala ngokushesha zomcimbi, ngokuvamile ezisetshenziselwa izinga lokushisa ≤80℃, ingcindezi ≤1.0MPa amanzi, uwoyela nomoya ocindezelwe kanye neminye imidiya;Uma kuqhathaniswa nama-valve esango kanye nama-valve ebhola, ama-butterfly valves afaneleka ezinhlelweni zamapayipi anezidingo zokulahlekelwa kwe-lax pressure.

7, Cimiyalo yokukhetha i-valve ye-heck

Ama-valve okuhlola ngokuvamile afanelekela imidiya ehlanzekile, hhayi imidiya equkethe izinhlayiya eziqinile kanye ne-viscosity.Uma i-DN≤40mm, sebenzisa ama-valve okuhlola okuphakamisayo (avunyelwe kuphela ukufakwa kumapayipi avundlile);Uma i-DN = 50 ~ 400mm, kuyafaneleka ukusebenzisa i-valve yokuhlola yokuphakamisa u-swing (ephayiphini elivundlile neliqondile lingafakwa, njengokufakwa epayipini eliqondile, ukugeleza okuphakathi ukusuka phansi kuya phezulu);Uma i-DN≥450mm, i-valve yokuhlola uhlobo lwe-buffer kufanele isetshenziswe;Lapho i-DN = 100 ~ 400mm ingaphinda ikhethe i-valve yokuhlola i-wafer;I-valve yokuhlola i-Swing ingenziwa ngengcindezi ephezulu yokusebenza, i-PN ifike ku-42MPa, ngokusho kwegobolondo kanye nezinto zokufaka uphawu zingasetshenziswa kunoma iyiphi i-medium kanye nanoma yiluphi uhla lokushisa lokusebenza.Okumaphakathi amanzi, isitimu, igesi, i-corrosive medium, uwoyela, umuthi, njll. Izinga lokushisa elisebenzayo lendawo liphakathi -196 ℃ kanye no-800℃.

 

8, Dimiyalo yokukhetha i-valve ye-iphragm 

I-valve ye-diaphragm ifanele ukushisa okusebenzayo ingaphansi kuka-200 ℃, ingcindezi ingaphansi kukawoyela we-1.0MPa, amanzi, i-acidic medium kanye nendawo emisiwe, ayifanele izinyibilikisi eziphilayo kanye ne-oxidant medium eqinile;I-abrasive granular medium kufanele ikhethe i-valve ye-diaphragm ye-weir, i-valve ye-diaphragm ye-weir kufanele ibhekisele etafuleni layo lezimpawu zokugeleza;I-Viscous fluid, i-slurry kasimende kanye ne-precipitation medium kufanele ikhethe ngokuqondile nge-valve ye-diaphragm;Amavalvu e-diaphragm akufanele asetshenziswe emigqeni ye-vacuum kanye nezinto ze-vacuum ngaphandle uma kucacisiwe.

Ama-valve ayahlukahluka ekusetshenzisweni, imvamisa yokusebenza kanye nenkonzo.Ukulawula noma ukuqeda ukuvuza okuncane, ama-valve ayimishini ebaluleke kakhulu nebalulekile.Ukufunda ukukhetha i-valve efanele kubalulekile.

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