Ukulinganisa kwengcindezi okuhlukile kudlala indima ebalulekile ezisetshenziswa zezimboni nezohwebo, njengoba kuhilela ukuqapha nokulawula umehluko wengcindezi phakathi kwamaphoyinti amabili ngaphakathi kwesistimu. Le ndlela yokulinganisa ayiqinisekisi ukuphepha kokusebenza kuphela kodwa futhi ithuthukisa ukusebenza kahle kwamandla futhi iqinisekisa ikhwalithi yemikhiqizo namasevisi. Ezinhlelweni zokushisisa, zokungenisa umoya, nezomoya (i-HVAC), ingcindezi ehlukile isetshenziselwa ukuqapha ukumelana nokugeleza komoya kwabalandeli, izihlungi, namapayipi, ngaleyo ndlela kuthuthukisa ukusebenza kwesistimu nokunciphisa ukusetshenziswa kwamandla. Ngokufanayo, emkhiqizweni kawoyela negesi, ukwelashwa kwamanzi, nezimboni zemithi, ukukalwa kwengcindezi ehlukile kubalulekile ukuze kuqashwe ukugeleza koketshezi, okokuhlunga, nokusebenza kwepompo, okusiza ukugcina ukusebenza kwesistimu evamile nokuvimbela izingozi ezingaba khona.
Izidluliseli zengcindezi ezihlukene zingamathuluzi abalulekile okufeza lo mgomo. Bangakwazi ukuguqula umehluko wengcindezi yomzimba ube amasignali kagesi, angase asetshenziselwe izinjongo zokuqapha nokulawula. Ngokusebenzisa ama-elementi azwela ukucindezela njengama-diaphragm, ama-strain gauge, noma amakristalu e-piezoelectric, izidluliseli zengcindezi ezihlukile zikala ngokunembile umehluko wengcindezi futhi zikhiqize amasignali okukhiphayo ka-4-20 mA noma 0-10 V. Lawa masignali angadluliselwa nakakhulu kumadeshibhodi, ukutholwa kwedatha. amasistimu, noma amasistimu okulawula okuqapha nokulungiswa kwesikhathi sangempela.
Ukusetshenziswa kokulinganisa kwengcindezi ehlukile kubanzi. Akusizi nje kuphela ukuqinisekisa ukusebenza okuphephile kwemishini yezimboni nezinqubo, ukugwema ukucindezela ngokweqile kanye nezingozi ezihlobene kodwa futhi kuthuthukisa ukusebenza kahle kwamandla kanye nekhwalithi yomkhiqizo ngokusebenzisa imisebenzi eyenziwe kahle. Embonini yezemithi, ukukalwa kwengcindezi ehlukile kuqinisekisa ukunemba kwezinqubo zokuvutshelwa nokuhlunga, ukuqinisekisa ukuthi umkhiqizo wokugcina uhlangabezana nokucaciswa nokugcina ukwethenjwa kwabathengi kumkhiqizo. Ngakho-ke, ngokombono wokuphepha, ukusebenza kahle, nokuqinisekiswa kwekhwalithi, ingcindezi ehlukile kanye nokulinganisa kwayo kuyizingxenye ezibalulekile zemisebenzi yesimanje yezimboni neyezentengiselwano.
Izinhlelo zokusebenza zama-Differential Pressure Transmitters
Ama-transmitter okucindezela ahlukene ayizingxenye ezibalulekile ze-automation yezimboni. Ngokunemba kwawo okuphezulu nokuzinza, adlala indima ebalulekile ezimbonini ezahlukahlukene njengamakhemikhali e-petrochemicals, ukukhiqiza amandla, i-metallurgy, ukwelashwa kwamanzi, ukudla neziphuzo, kanye nemithi. Lawa madivayisi ngokuyinhloko asebenzisa izimiso ezibonakalayo, njenge-Bernoulli equation kanye nesimiso sokucindezela okumile, ukukala ukugeleza, ileveli yoketshezi, kanye nesimo sezihlungi, ngaleyo ndlela kunikeze idatha ebalulekile ukusekela ukukhiqizwa nokuqapha izinqubo.
Isilinganiso sokugeleza siyindawo enkulu yokusetshenziswa kwama-transmitter okucindezela okuhlukile. Ngokulinganisa umehluko wengcindezi okhiqizwa lapho uketshezi lugeleza emshinini odonsa umoya, izinga lokugeleza likawoyela, igesi yemvelo, isitimu, nolunye uketshezi lungabalwa ngokunembile. Ngaphezu kwalokho, ama-transmitter okucindezela okuhlukile afakazele inani lawo esilinganisweni sezinga le-liquid, aqapha ngokunembile ubude bezinga loketshezi kumathangi okugcina, ama-boilers, nama-reactors, okubalulekile ekuqinisekiseni ukuphepha nokusebenza kahle kokukhiqiza.
Ukuqapha kwesihlungi kungolunye uhlelo lokusebenza olubalulekile. Ama-transmitter okucindezela okuhlukile abonisa ukuthi isihlungi sivalekile ngokuthola izinguquko emehlukweni wengcindezi ngaphambi nangemuva kwesihlungi, ngaleyo ndlela siqinisekise ukusebenza okuvamile kwesistimu. Ngaphandle kwalezi zinhlelo zokusebenza ezithile, ama-transmitter okucindezela okuhlukile nawo asetshenziswa kabanzi ukuqapha ukuvuza kwamapayipi, ukusebenza kwepompo, kanye nesimo samavalvu. Ngokuqapha izinguquko ekuhlukeni kwengcindezi, banikeza ukusekelwa kwedatha okuthembekile ukuze kugcinwe ukusebenza kwesistimu okuphumelelayo.
Ama-transmitter okucindezela okuhlukile nawo adlala indima ebalulekile ekuqaphelweni kwemvelo, ikakhulukazi ekuqaphelweni kwekhwalithi yomoya. Ngokulinganisa umehluko wengcindezi phakathi kwezindawo ezihlukene emoyeni, lawa mathuluzi angakwazi ukubala ngokunembile isivinini somoya nevolumu, ngaleyo ndlela aqaphe ukuhlangana kwezinhlayiyana ezifana ne-PM2.5 ne-PM10, namagesi afana ne-SO2 ne-NO2. Ukwengeza, badlala indima ebalulekile ekuqapheni ukukhishwa kwezimboni, ukuthuthwa kwezimoto, kanye nekhwalithi yomoya wasendlini.
Ekuqaphelweni kwegumbi elihlanzekile, abadlulisi bengcindezi abahlukene baqinisekisa ukuthi ukuhlanzeka komoya kuhlangabezana nezindinganiso ngokuqapha umehluko wengcindezi ngaphakathi kwezindlu ezihlanzekile, okubalulekile ekulawuleni ikhwalithi ezimbonini zemithi, zikagesi, nezokudla. Ngaphandle kokuqapha izinga lomoya, lezi zithumeli zibuye zisetshenziswe ekuqaphelweni kwekhwalithi yamanzi, umswakama wenhlabathi, kanye nokubhekwa kwesimo sezulu, okubonisa ukuguquguquka kwazo emkhakheni wokuqapha imvelo.
Ngenxa yokunemba kwazo okuphezulu kwesilinganiso (kufika ku-0.1% -0.5%), ukuzinza okuhle kakhulu kwesikhathi eside, kanye nobubanzi bohlelo lokusebenza, kuhlanganiswe nokufaka kalula nokugcinwa kahle, ama-transmitter okucindezela okuhlukile asephenduke amathuluzi abalulekile ekuqaphelweni kwemvelo. Njengoba ukwanda kokuqwashisa ngokuvikelwa kwemvelo, kulindeleke ukuthi abadlulisi bengcindezi abahlukene bazobona izinhlelo zokusebenza ezibanzi esikhathini esizayo. Ngokuthuthuka kwezobuchwepheshe, ukusebenza kwawo kokulinganisa kanye nobubanzi bohlelo lokusebenza kulindeleke ukuthi kuqhubeke kwandise, kunikeze ukwesekwa kwedatha okunembe kakhudlwana nokuthembekile ukuze kuvikelwe imvelo.
Ukubala Ukucindezela Okuhlukile
Ukubala ingcindezi ehlukile kuyisinyathelo esibalulekile ezisetshenziswa zezimboni nezohwebo, ikakhulukazi esilinganisweni sokugeleza, ukulinganisa izinga loketshezi, nokuqapha isihlungi. Ukucindezela okuhlukile, umehluko wengcindezi phakathi kwamaphoyinti amabili ngaphakathi kwesistimu, umqondo womzimba owumongo. Ifomula yayo yokubala ilula nokho iyasebenza: ingcindezi ehlukile (Pd) ilingana nokucindezela kohlangothi oluphezulu (Ph) khipha ingcindezi eseceleni ephansi (Pl), futhi ingavezwa ngamayunithi ahlukene njengePascal (Pa), amaphawundi ngeyintshi yesikwele (PSI) ), noma ibha.
Ukubala ukucindezela kokuhlukanisa kuhilela izinyathelo ezimbalwa ezibalulekile: okokuqala ukulungiselela, ukuqinisekisa ukufakwa okulungile nokuxhumeka kwe-transmitter yokucindezela okuhlukile; okulandelayo ukwenza ukubala, ukuthola imiphumela ngokusebenzisa ifomula yokucindezela okuhlukile; ekugcineni, ukuguqula amayunithi njengoba kudingeka. Isibonelo, uma ingcindezi yohlangothi oluphezulu lwesistimu ingu-100 PSI futhi ingcindezi eseceleni ephansi ingu-50 PSI, khona-ke ingcindezi ehlukile ingu-50 PSI.
Ukunemba kokulinganisa kwengcindezi ehlukile kuthonywa izici ezihlukahlukene, okuhlanganisa ukunemba kwenzwa, ukuvuza okungase kube khona, izinguquko kuzinga lokushisa kwemvelo, nokudlidliza. Ngaphezu kwalokho, kuye ngohlelo lokusebenza, kunezinhlobo ezahlukahlukene zama-transmitters okucindezela okuhlukile, njenge-capacitive, i-piezoresistive, ne-piezoelectric, ngayinye ifanele indawo ethile yokulinganisa kanye nezidingo.
Ibanga lohlelo lokusebenza lokucindezela okuhlukile libanzi kakhulu, alikhawulelwe ekuhloleni ukugeleza, ileveli yoketshezi, nezihlungi, kodwa futhi lihlanganisa nokulawula ingcindezi phakathi kwezinye izindawo. Ukulinganisa okunembile kwengcindezi ehlukile kubalulekile ukuze kuqinisekiswe ukusebenza kahle kwezinqubo zezimboni, ukuthuthukisa ukusebenza kwemishini, nokuqinisekisa ukuphepha ekukhiqizeni. Ngakho-ke, ukuqonda izimiso eziyisisekelo zokucindezela okuhlukile, izindlela zokubala, kanye nendima yayo ezinhlelweni ezihlukahlukene kuyikhono eliyisisekelo nelibalulekile lonjiniyela nabasebenzi bezobuchwepheshe.
Isikhathi sokuthumela: Mar-28-2024