I-valve yokupheliswa kwengxaki eqhelekileyo, ukugcinwa koxinzelelo oluphantsi lwe-valve ye-ADAMS yokuvala ixesha lokumisela indlela

Ivalve exhaphakileyo yokupheliswa kwengxaki, ukugcinwa koxinzelelo oluphantsi ivelufa ye-ADAMS yokuvala ngokukhawuleza indlela yokuseta ixesha 1. Kutheni le nto ivalve yokusikwa kufuneka itywinwe nzima kangangoko kunokwenzeka? Sika iimfuneko zokuvuza kwevalve kokusezantsi kokungcono, ukuvuza kwevalve yevalve ethambileyo yeyona iphantsi, inqunyulwe isiphumo ngokuqinisekileyo ilungile, kodwa ayixhathisi, ukuthembeka okulambathayo. Ukusuka ekuvuzeni kunye nokuncinci, ukutywinwa kunye nomgangatho ophindwe kabini othembekileyo, itywina elithambileyo elisikiweyo lingcono kunetywina eliqinileyo elisikiweyo. Njengomsebenzi opheleleyo we-valve yokulawula i-ultra-light, itywinwe kwaye ifakwe ngokhuseleko lwe-alloy-resistant-resistant, ukuthembeka okuphezulu, izinga lokuvuza kwe-10-7, liye lakwazi ukuhlangabezana neemfuno ze-valve yokusika. 2. Kutheni ivalve yokutywina kabini ingenakusetyenziswa njengesivalo esisikiweyo? I-advanteji ye-spool ye-valve yezihlalo-ezimbini yindlela yokulinganisa amandla, evumela umahluko omkhulu woxinzelelo, kunye nobubi bayo obubalaseleyo kukuba iindawo ezimbini zokutywina azikwazi ukunxibelelana kakuhle ngexesha elinye, okukhokelela ekuvuzeni okukhulu. Ukuba isetyenziswe ngokunyanzeliswayo kunye nokunyanzeliswa ukunqumla umcimbi, ngokucacileyo umphumo awulungile, nokuba wenze uphuculo oluninzi (njenge-valve ye-sleeve yokutywina kabini), ayinqweneleki. 3. Kutheni kulula ukushukuma xa ivalve enezihlalo ezibini ivulekile? Kwisiseko esisodwa, xa i-medium yi-flow evulekileyo uhlobo, ukuzinza kwevalve kulungile; Xa i-medium ivaliwe, ukuzinza kwevalve kubi. I-valve yesitulo esiphindwe kabini sine-spool ezimbini, i-spool esezantsi ikwi-flow evaliweyo, i-spool ephezulu ikwi-flow evulekileyo, ngoko ke, kumsebenzi omncinci wokuvula, ukuhamba okuvaliweyo kohlobo lwe-spool kulula ukubangela ukungcangcazela kwevalve, oku. sisizathu sokuba ivalve yesitulo esiphindwe kabini ingasetyenziselwa umsebenzi omncinci wokuvula. I-4, yeyiphi i-stroke echanekileyo yokulawula ukusebenza kwevalve engalunganga, ukusebenza kwe-Angle stroke blocking valve kulungile? I-spool yevalve yestroke ethe nkqo ibethe nkqo, kwaye indawo ephakathi ihamba ethe tye ukungena nokuphuma kumjelo wegumbi levalve kufuneka ijike umva, ukuze indlela yokuhamba kwevalvu ibenzima kakhulu (imilo efana nohlobo lwe-S olujikiweyo). Ngale ndlela, kukho iindawo ezininzi ezifileyo, ezibonelela ngesithuba semvula yemvula ephakathi, kwaye ekuhambeni kwexesha, kubangela ukuvala. Icala le-Angle stroke valve throttling licala elithe tye, i-medium iqukuqela ingene kwaye iphume ngokuthe tye, kwaye kulula ukuyithatha indawo engacocekanga. Ngexesha elifanayo, indlela yokuhamba ilula, kwaye indawo yemvula ephakathi incinci kakhulu, ngoko i-valve ye-Angle stroke inomsebenzi omhle wokuthintela. 5, kutheni i-valve yokulawula i-stroke isiqu esithe ngqo sincinci? Ivalve yokulawula istrowuthe ethe ngqo ibandakanya umgaqo olula womatshini: ukukhuhlana okukhulu kokutyibilika, ukukhuhlana okuncinci okuqengqelekayo. Ivalve yevalve ethe tye isikhondo phezulu nasezantsi intshukumo, ipakisha icinezelwe kancinci, iya kubeka isikhondo sevalve esongelwe ngokuqinileyo, ivelise umahluko omkhulu ngasemva. Ngenxa yesi sizathu, i-valve stem yenzelwe ukuba ibe yincinci kakhulu, kwaye ukupakishwa ngokuqhelekileyo kusetyenziswa kunye ne-coefficient encinci yokupakisha i-PTFE yokupakisha, ukuze kuncitshiswe i-backdifference, kodwa ingxaki kukuba i-valve stem incinci, kulula ukugoba. , kwaye ubomi bokupakisha bufutshane. Ukusombulula le ngxaki, eyona ndlela ilungileyo kukusebenzisa isiqu sevalve yokuhamba, oko kukuthi, i-Angle stroke ye-valve stem, isiqu sayo sevalvu ngama-2 ~ 3 amaxesha atyebileyo kunokubetha okuthe tye kwesiqu sevalve, kunye nokukhetha ixesha elide. -ubomi bokupakisha igraphite, ukuqina kwesiqu kulungile, ukupakisha ubomi bude, i-torque ye-friction incinci, umehluko omncinci wokubuya. 6. Kutheni umahluko woxinzelelo olusikiweyo wevalve yeAngle stroke umkhulu? Ivalve yohlobo lwe-Angle inqunyulwe umahluko woxinzelelo mkhulu, kuba indawo ephakathi kwi-spool okanye iplati yevalve isiphumo samandla kwi-torque ye-rotation shaft incinci kakhulu, ke ngoko, inokumelana nomahluko omkhulu woxinzelelo. 7. Kwakutheni ukuze isivalo somkhono sithathe indawo yevalve yesitulo esinye nesiphindwe kabini kodwa ingayiphumezi injongo yayo? Ivalve yomkhono, eyaphuma ngeminyaka yoo-1960, yayisetyenziswa kakhulu ekhaya nakwamanye amazwe ngeminyaka yoo-1970. Kwiplanti yepetrochemical eyaziswa ngeminyaka yoo-1980, ivalve yesikhono yabalelwa kumlinganiselo omkhulu. Ngelo xesha, abantu abaninzi babekholelwa ukuba ivalve yomkhono ingathatha indawo yevalve yesitulo esinye kunye nesibini kwaye ibe sisizukulwana sesibini seemveliso. Namhlanje, oku akunjalo, ivalve yesitulo esinye, ivalve yesitulo esiphindwe kabini, ivalve yesitulo isetyenziswa ngokulinganayo. Oku kungenxa yokuba ivalve yomkhono iphucula kuphela imo yokugobhoza, uzinzo kunye nokugcinwa ngcono kunevalve yesitulo esinye, kodwa ubunzima bayo, izikhombisi zokuvala kunye nokuvuza ziyahambelana nevalve yesitulo esinye kunye nesiphindwe kabini, ingayibuyisela njani ivalve yesitulo esinye nesiphindwe kabini. ? Ngoko ke, kufuneka kwabelwane ngayo. 8. Kutheni le nto ubomi benkonzo yomthombo wamanzi akhupha ityuwa bufutshane nevalve yerabha yebhabhathane kunye nefluorine lined diaphragm valve bufutshane? Isiphakathi samanzi sokugalela ityuwa siqulethe i-asidi ephantsi okanye i-alkali, inomhlwa omkhulu kwirabha. I-corrosion ye-rubber ibonakala ngokunyuka, ukuguga kunye namandla aphantsi. Ukusetyenziswa kwevalve yebhabhathane kunye nevalve yediaphragm efakwe irabha imbi. Undoqo kukuba irabha ayixhathisi kukuhlwa. Emva kokuba ivalve ye-rubber lining diaphragm iphuculwe ukuxhathisa umhlwa kwevalve ye-fluorine efakwe kwi-diaphragm, kodwa i-diaphragm yevalve ene-fluorine ene-diaphragm ayikwazi ukuma phezulu naphantsi ukusonga kunye nokwaphukile, okukhokelela kumonakalo womatshini, ubomi bevalve bufutshane. Ngoku eyona ndlela ilungileyo kukusebenzisa ivalve yebhola yokucoca amanzi, ingasetyenziselwa iminyaka emi-5 ukuya kwe-8. I-9, kutheni ukusetyenziswa kwe-pneumatic valve piston actuator kuya kuba ngaphezulu nangaphezulu? Kwivalve ye-pneumatic, i-piston actuator inokusebenzisa ngokupheleleyo uxinzelelo lomthombo womoya, ubungakanani be-actuator buncinci kunefilimu, i-thrust inkulu, i-O-ring kwipiston inokuthenjwa ngakumbi kunefilimu, ngoko iya kuba njalo. zisetyenziswe ngakumbi nangakumbi. 10. Kutheni ukukhetha kubaluleke ngaphezu kokubala? Ukubala kunye nokukhetha xa kuthelekiswa, ukhetho lubaluleke kakhulu, lunzima kakhulu. Ngenxa yokuba ukubala kubalwa kwefomula elula, yona ngokwayo ayixhomekeke kwiqondo lefomula, kodwa kuxhomekeke ekuchanekeni kweeparameters zenkqubo enikeziweyo. Ukhetho lubandakanya umxholo ongaphezulu, ukungakhathali kancinci, kuya kukhokelela ekukhethweni okungafanelekanga, kungabangela ukuchithwa kwabasebenzi, izixhobo eziphathekayo, izibonelelo zemali, kunye nokusetyenziswa kwempembelelo ayifanelekanga, kuzisa inani leengxaki zokusetyenziswa, ezifana nokuthembeka. , ubomi, umgangatho wokusebenza, njl. Kuvavanyo lokuvala ngokukhawuleza kwe-valve yoxinzelelo oluphantsi kwisayithi, ixesha lokuvala ngokukhawuleza kwezinye iivalve zokumisa alifanelekanga. I-inlet ye-valve yokukhulula ngokukhawuleza ilungelelaniswe kwisayithi ukwenza ixesha lokuvala ngokukhawuleza kwazo zonke iivalve zihlangabezana neemfuno. Kuvavanyo lokuvala olukhawulezayo lwevalve yoxinzelelo oluphantsi kwisiza, ixesha lokuvala ngokukhawuleza kweevalve ezimbalwa zokumisa alifanelekanga. I-inlet ye-valve yokukhulula ngokukhawuleza ilungelelaniswe kwisayithi ukwenza ukuvala ngokukhawuleza kwazo zonke iivalve ukuhlangabezana neemfuno. I-inlet ye-valve ye-Adams yoxinzelelo oluphantsi ukuya kwi-valve yokukhupha ngokukhawuleza iguqulwa ngokutshintsha inani le-gaskets yangaphambili nasemva. Umphumo oshukumayo wecandelo elincinci li-± 0.15s, kwaye umphumo ohambayo wecandelo elinzima yi-± 0.3s, njengoko kuboniswe kumfanekiso ongezantsi. Ngokutsho kwesakhiwo somatshini wesixhobo, umgaqo uthathwa nje ngolu hlobo lulandelayo: Idityaniswe KUNYE nomzobo weskimu kunye neefoto, kunokubonwa ukuba indlela yohlengahlengiso kukutshintsha i-gaskets kumacala omabini omphathi ukulungisa ubude bomsebenzi. yonke isilayidi nzulu kwisekethe yeoli. Kukho iindidi ezimbini zesilayidi, enye ibhityile kwaye enye engqindilili. Imizobo emibini elandelayo ibonisa indawo yesilayidi ngexesha lokusebenza okuqhelekileyo kunye nokuvala ngokukhawuleza. Njengoko kunokubonwa kumfanekiso, xa usebenza ngokuqhelekileyo, isilayidi siqhutyelwa phambili, kwaye indlela yokukhupha ivaliwe; Xa ukuvalwa ngokukhawuleza kokutsiba kwenzeka, isilayidi singaphandle kwaye isekethe yeoli yokukhulula iyavulwa. Tshintsha inani leegaskets emva kwebhloko yesilayidi, unokutshintsha isihlalo sangasemva sebhloko yesilayidi, ngaphandle ukuya kubude bendlela ye-oyile yokukhulula, ngaphandle ukongeza i-gasket, unokwenza ixesha lokuvala ngokukhawuleza landiswe i-0.15s, kwi ngaphandle ukongeza gasket eshinyeneyo, kungenza ixesha lokuvala ngokukhawuleza landiswe 0.3s. Xa iwasha ifakwe ngaphakathi, ayitshintshi ixesha. Isetyenziselwa ukugcina i-backup.