Kwindlela yokulinganisa inkqubo yemizi-mveliso,abathumeli boxinzelelo olwahlukileyobanoxanduva lokufumanisa iiparameter ezibalulekileyo ezifana nomahluko woxinzelelo, inqanaba lolwelo kunye nokuhamba kwamanzi. I-DP transmitter ilinganisa umahluko woxinzelelo phakathi kwamanqaku amabini kwaye i-sensitive element yayo (i-diaphragm capsule) ibuthathaka. Ukufakelwa okanye ukusebenza okungafanelekanga—umzekelo, ukufaka uxinzelelo olugqithisileyo ngequbuliso kwicala elinye—kungonakalisa okanye kutshabalalise i-transmitter ngokusisigxina. Njengesixhobo esichanekileyo esisetyenziselwa ukulinganisa kunye nokulawula imveliso, ukusebenza kwayo okukhuselekileyo nokuchanekileyo kuxhomekeke kakhulu kwi-valve manifold ehambelana nayo.
Isixhobo sokudlulisa uxinzelelo oluhlukeneyo sifuna i-valve manifold ngenxa yezi zizathu zilandelayo:
Imfuneko yokhuseleko:I-DP transmitter ilinganisa umahluko woxinzelelo phakathi kwamagumbi ayo anoxinzelelo oluphezulu noluphantsi. Ukuba iivalvu ezikumacala omabini zisebenza ngokungacwangciswanga ngexesha lokugunyaziswa, ukuvalwa okanye ukulungiswa, i-transmitter inokufakwa kwinkqubo epheleleyo yoxinzelelo olungaguqukiyo kwicala elinye kuphela, nto leyo enokonakalisa i-diaphragm ethambileyo. I-equalizing valve kwi-manifold ibonelela ngendlela yokulinganisela uxinzelelo kumacala omabini ngaphambi kokusebenza njengoyilo olubalulekileyo oluthintela umonakalo woomatshini.
Imfuneko yokulinganisa:Zonke izixhobo zokulinganisa azinawo umbane. I-DP transmitter ifuna ukuba isignali yayo yokuphuma ijongwe kwaye ilungiswe kwi-theoretical zero point xa uxinzelelo lomahluko luyi-zero. Ngokuvala iivalvu ze-H kunye ne-L block kunye nokuvula i-equalizing valve, imeko yoxinzelelo lokwenyani oluyi-zero-differential-pressure inokwenziwa ngaphandle kokuphazamisa inkqubo, okuvumela ukulinganiswa kwe-intanethi okungekho mngcipheko ukuqinisekisa ukuchaneka komlinganiselo wexesha elide.
Imfuneko yolondolozo:Ii-impulse lines zinokuqokelela igesi, i-condensate okanye ukungcola, nto leyo ebangela ukuphazamiseka okanye ukuvaleka kwesignali. Ngenxa yoko, iivalvu ezinikezelweyo ziyafuneka ukuze kungeniswe umoya, kukhutshwe amanzi (ukubhodloza) kwaye kuhlanjwe.
I-3-valve yeyona isetyenziswa kakhulu kwi-DP transmitter. Iqulathe iivalvu ezimbini ze-process isolation (block) kunye ne-equalizing valve enye embindini. Ngexesha lokusebenza okuqhelekileyo, iivalvu ezimbini ze-block zivulekile kwaye i-equalizing valve ivaliwe, okuvumela i-process medium ukuba ingene kwii-pressure chambers ze-transmitter ezilungileyo nezingalunganga ngokulandelelana kwaye ilinganise uxinzelelo lomahluko wexesha langempela. Nangona kunjalo, ngexesha lokuqalisa okanye lokuvala, ulandelelwano lokusebenza "qala uvule i-equalizing valve, uze usebenzise (uvule okanye uvale) ii-block valves" kufuneka lulandelwe ngokungqongqo. Injongo kukuthintela uxinzelelo olucala-nye lwe-transmitter. Ukuba uxinzelelo oluphezulu lungeniswa ngequbuliso kwelinye icala, uxinzelelo olukhulu olujikelezayo olungenacala lunokonakalisa ngoko nangoko i-fragile sensor diaphragm—isizathu esiqhelekileyo sokungasebenzi kwesixhobo. I-equalizing valve igcina uxinzelelo kwii-H & L chambers lulungelelene kuyo yonke inkqubo yokuzalisa okanye yokuthomalalisa, ngaloo ndlela ikhusela i-sensor.
I-manifold ye-valve ezi-5 yakha phezu koyilo lwe-valve ezi-3 ngokongeza izibuko ze-valve ezongezelelweyo kwicala ngalinye loxinzelelo lwe-H & L. Ulwakhiwo oluqhelekileyo lwe-manifold ye-valve ezintlanu luqulathe ii-valve ezimbini zebhloko, i-valve enye yokulinganisa kunye nee-valve ezimbini zokukhupha amanzi okanye zokungenisa umoya. Ngokomgaqo, i-manifold ye-valve ezintlanu igubungela yonke imisebenzi ye-manifold ye-valve ezintathu kwaye ifezekisa inqanaba eliphezulu ekuguquguqukeni kokusebenza kunye nokulula kokugcinwa.
Kwimisebenzi ebonakalayo, kwiimilinganiselo ezibandakanya ulwelo olucocekileyo okanye iigesi ezingenazo izinto ezingcolileyo, ezingathandi ukuxinana okanye ezifuna ukubhujiswa rhoqo, i-3-valve manifold inokuhlangabezana ngokupheleleyo neemfuno. Imizekelo ibandakanya ukulinganiswa kokuhamba kwamanzi kwimibhobho yomoya ocinezelweyo okanye ukulinganiswa kwamanqanaba kwiinkqubo zamanzi acocekileyo, apho i-medium icocekile kwaye izinzile, imigca ye-impulse akunakwenzeka ukuba ivalwe kwaye kufuneka ulondolozo oluncinci kakhulu. Kwiimeko ezinjalo, i-3-valve manifold lukhetho olungabizi kwaye oluthembekileyo. Ukuba nje abaqhubi balandela ngokungqongqo iinkqubo ze-equalizing valve, i-3-valve manifold inokusebenza ngaphandle kweengxaki ixesha elide.
Nangona kunjalo, kwiindawo zoshishino ezisetyenziswayo, i-medium idla ngokuba yeyona ifanelekileyo. Xa kulinganiswa umphunga, igesi enothuli okanye udaka, ukuqokelelwa kwe-condensate okanye ukuvaleka kwamasuntswana kwimigca ye-impulse kunokubangela ukubambezeleka kokulinganisa, iimpazamo okanye nokungaphumeleli. Kwezi meko, iivalvu ezimbini ze-drain ze-5-valve manifold zivumela ukususwa kwe-drain kunye ne-condensate kwi-intanethi ngaphandle kokuchitha imigca ye-impulse okanye ukuvala yonke i-loop yokulinganisa. Iingcali zezixhobo zasentsimini kufuneka zivale iivalvu zebhloko kwaye zivule iivalvu ze-drain; emva koko zinokuqokelela ulwelo olungcolileyo kwisikhongozeli okanye zihlambulule ngomphunga ukuze zigqibezele ukucoca. Oku kulula kakhulu kwi-petrochemical kunye nokufakelwa kwamandla ombane okufuna ukuqhubeka okuphezulu kwemveliso, ukuphucula ukusebenza kakuhle kokugcinwa ngelixa kunciphisa umngcipheko wokutshiza okuphakathi okanye ukuvuza.
Ukuba ukhetha i-manifold ye-3-valve okanye ye-5-valve yesixhobo soxinzelelo oluhlukeneyo kufuneka kugqitywe ngokusekelwe kwiimfuno ezifanayo zeprojekthi, kunye nemeko ephakathi, uyilo lofakelo, kunye nesicwangciso sokusebenza nokugcinwa.Shanghai Wangyuanngumvelisi ochwephesha ogxile kwizixhobo zomculo, onamava angaphezu kweminyaka engama-20 kushishino. Ukuba unayo nayiphi na imfuno okanye imibuzo malunga nokukhetha izixhoboabathumeli boxinzelelo olwahlukileyokunye neevalvu ze-valve, nceda uzive ukhululekile ukuqhagamshelana neShanghai Wangyuan ukuze ufumane isisombululo sokulinganisa esifanelekileyo.
Ixesha leposi: Meyi-11-2026