Ulwazi oluyisisekelo lwamaphampu amakhemikhali

Indlela yokukhetha ipompo efanelekile kakhulu ibilokhu iyinto ekhathaza kakhulu abantu. Akulula kuwe ukuthi ukhethe ilungeloiphampu yamakhemikhalinjengoba zonke lezi zici zibalulekile: isenzakalo, imidiya, impahla, njll.

Lapha sinesingeniso esinemininingwane eminingi yezinhlobo ezahlukene zamaphampu, ukuze sikunikeze umbono ocacile wokuthi hlobo luni lwepompo yamakhemikhali okufanele ukhethe.

Ukukhetha iphampu, kufanele siqale siqonde futhi siqonde imigomo yokukhetha iphampu yamakhemikhali. 

1. Uhlobo lwephampu olukhethiwe nokusebenza ngokuhambisana nedivayisiukugeleza, ikhanda, ingcindezi, izinga lokushisa, ukugeleza kwe-cavitation, ukumunca kanye neminye imingcele yenqubo.

2. Kumele icacise izidingo zezici ezimaphakathi.

Ekuthuthweni kwephampu yemidiya evuthayo, enobuthi eqhumayo noma ebizayo, idinga isigxivizo esithembekile noma ukusetshenziswa kwamaphampu angavuzi, njengeiphampu ye-magnetic drive,iphayiphaphu yephampu,iphampu yesihlangu.

3. Ukudluliswa kwephampu yemidiya eyonakalisayo, ukwethembeka komshini, umsindo ophansi, ukudlidliza.

4. Umnotho kufanele ucabangele izindleko zemishini, izindleko zokusebenza, ukugcinwa nokuphathwa kwezindleko eziphansi kunazo zonke.

5. Izikhathi ezijwayelekile, ukukhetha iphampu yamakhemikhali:

(1) futha centrifugalngesivinini esikhulu, usayizi omncane, isisindo esincane, ukusebenza kahle okuphezulu, ukugeleza okukhulu, isakhiwo esilula, akukho pulsation of the infusion, ukusebenza okuzinzile, ukusebenza okulula nokugcinwa okulula nokunye.

(2) Kunezidingo zokulinganisa, ukukhetha kwepompo yokulinganisa.

(3) Izidingo zekhanda ziphakeme kakhulu, ukugeleza kuncane futhi akukho ukugeleza okuncane okufanelekile kwephampu ye-centrifugal motor ingasetshenziswa, iphampu ephindaphindayo ozikhethela yona, njengezidingo ze-cavitation aziphezulu nazo zingasebenzisa iphampu ye-vortex.

(4) Ikhanda liphansi kakhulu, ukugeleza okukhulu, ukukhethwa kwepompo yokugeleza kwe-axial kanye nepompo yokugeleza okuxubile.

(5) I-viscosity emaphakathi (enkulu kuno-650 ~ 1000mm2 / s), cabangela ukukhetha kwepompo yerotha noma impompo ephindaphindayo (iphampu yegiya, iphampu yesikulufu)

(6) Okuqukethwe kwegesi okuphakathi kuka-75%, izinga lokugeleza lincane futhi i-viscosity ingaphansi kuka-37.4mm2 / s, ukukhethwa kwepompo ye-vortex.

Ukuqala kaningi nomaiphampu yokuchelelaizikhathi zokuphazamiseka, kufanele kusetshenziswe ukusebenza kokuzilungiselela kwephampu, njengeiphampu ye-centrifugal yokuzilungisa,Iphampu ye-vortex ye-self-priming, iphampu yomoya (kagesi) ezinikele.

Ukufuna izingxenye ze-convection kusetshenziswa ukukhetha kwephampu yezinto ezikwazi ukumelana nokugqwala okusekelwe enqubweni kufanele kusekelwe ezidingweni zokuhlinzekwa kwamanzi kanye nokukhipha amanzi, kusukela ezicini ezinhlanu okufanele zicatshangelwe. 

1. Ukugeleza kungenye yedatha ebalulekile yokusebenza kwepompo, ihlobene ngokuqondile namandla okukhiqiza kanye nomthamo wokudlulisa wedivayisi yonke. Njengokwakheka kwenqubo ye-Design Institute kungabala ipompo evamile, ubuncane, izinhlobo ezintathu eziphezulu zethrafikhi. Khetha ipompo, ukugeleza okuphezulu njengesisekelo, kucatshangelwa ukugeleza okuvamile, lapho kungabikho ukugeleza okuphezulu, ngokuvamile kufiseleka izikhathi ezingu-1.1 ukugeleza okujwayelekile njengokugeleza okuphezulu.

2. Isistimu yedivayisi iyadingeka ukuphakamisa iphampu kungenye idatha yokusebenza ebalulekile, ukusetshenziswa okuvamile kokukhulisa 5% -10% imajini ukuya ekhanda ngemva kokukhetha.

3. Izakhiwo eziwuketshezi, okuhlanganisa igama eliphakathi nendawo eliwuketshezi, izici ezibonakalayo, izici zamakhemikhali nezinye izici, eziphathelene nenhloko yohlelo, ukubala okusebenzayo kwe-NPS kanye nohlobo olufanele lwepompo, ukukhetha kwempahla yepompo nokusebenzisa lolo hlobo lophawu lwe-shaft.

4. Isimo sokuhlela amapayipi sesistimu yokufaka sibhekisela ekuphakameni kokuphakela uketshezi, ibanga lokuthumela uketshezi, izinga elincane loketshezi lohlangothi lokumunca, izinga eliphezulu loketshezi lohlangothi olukhiphayo, njll., kanye nezicaciso. , ubude, izinto zokwakha, nokunye, ukuze uqhubeke nokubala kwekhanda lekamu kanye nokuhlola kwe-NPSH.

5. Ukunqunywa kwezimo zokusebenza, njengokusebenza kwe-liquid T egcwele umhwamuko, ingcindezi yohlangothi lokumunca (absolute), ukucindezela komkhumbi oseceleni kokukhipha, ukuphakama, ukusebenza kwezinga lokushisa elizungezile kuyigebe noma okuqhubekayo, kungakhathaliseki ukuthi indawo yepompo imisiwe noma iyasuswa. Ziyisisekelo esibalulekile sokukhetha. Izinto ezifana ne-AFB steel stainless steel resistant corrosion, i-CQF engineering plastic magnetic drive futha.

Ukuze kudluliselwe izinhlayiya eziqinile eziqukethe imidiya, ukusetshenziswa kwezingxenye ze-convective kudinga izinto ezingagugi, uma kunesidingo, ukufaka uphawu lwe-shaft nge-rinse ehlanzekile yoketshezi.

Ukuhlelwa kwamapayipi amaphampu amakhemikhali

Emgqeni wokuklama wesakhiwo, kufanele uqaphele okulandelayo:

A. Ukukhetha okunengqondo kobubanzi bepayipi, ububanzi bepayipi, ngesilinganiso sokugeleza esifanayo, isivinini sokugeleza sincane, ukulahlekelwa ukumelana kuncane, kodwa intengo iphakeme, ububanzi bepayipi buncane, kuzoholela ekwenyukeni okubukhali kokulahlekelwa ukumelana. , ikhanda lepompo liyakhula Ngokukhula kwamandla, izindleko kanye nezindleko zokusebenza ziye zanda. Ngakho kufanele kucatshangelwe ngokombono wezobuchwepheshe nezomnotho.

B. Ipayipi le-exhaust kanye nokufakwa kwalo kufanele kukwazi ukukhumbula ukucindezela okukhulu.

C. Isakhiwo sepayipi kufanele sihlelwe ngendlela eqondile ngangokunokwenzeka ukuze kuncishiswe ukufakwa kwamapayipi futhi kuncishiswe ubude bepayipi kufanele kuphendulwe lapho iradiyasi egobayo yobubanzi bepayipi lendololwane kufanele ibe izikhathi ezi-3 kuya kwezi-5 nge-engeli kaningi ngangokunokwenzeka 90 Lt; 0 & gt; C.

D. Uhlangothi lokuphuma lwepompo kufanele lufakwe ama-valve (ibhola noma i-globe valve, njll.) kanye ne-valve yokuhlola. I-valve isetshenziselwa ukulungisa indawo yokusebenza yepompo. I-valve yokuhlola ivimbela ipompo ukuthi ibuyele emuva lapho uketshezi lubuyela emuva futhi ivimbela ipompo ukuthi ingashayi isando samanzi. (Lapho i-liquid backflow, izoba nokucindezela okukhulu okuphambene, ukulimala kwepompo).