iyunithi ezi-3 (25MW) zomzi-mveliso wombane zixhotyiswe ngamabini axwesileyo  iimpompo zecasing eziqhekezayo  njengeempompo zokupholisa ezijikelezayo. Iiparamitha zempompo yegama lezi:

Q=3240m3/h, H=32m, n=960r/m, Pa=317.5kW, Hs=2.9m (okt NPSHr=7.4m)

Isixhobo sempompo sinika amanzi kumjikelo omnye, kwaye indawo yokungena nokuphuma kwamanzi ikwindawo enye yamanzi.

Ngaphantsi kweenyanga ezimbini zokusebenza, i-impeller yepompo yonakaliswe kwaye ihlanjwe yi-cavitation.

Ukucwangciswa:

Okokuqala, senza uphando kwisayithi kwaye safumanisa ukuba uxinzelelo lokuphuma kwempompo lwaluyi-0.1MPa kuphela, kwaye isalathisi sasiguqa ngamandla, sihamba kunye nesandi sokuqhuma kunye ne-cavitation. Njengomsebenzi wempompo, ingcamango yethu yokuqala kukuba i-cavitation yenzeka ngenxa yeemeko zokusebenza ezingaphelelanga. Ngenxa yokuba intloko yoyilo lwempompo yi-32m, njengoko ibonakaliswe kwi-gauge yokukhupha uxinzelelo, ukufundwa kufuneka kube malunga ne-0.3MPa. Ukufundwa kwegeyiji yoxinzelelo kwisiza yi-0.1MPa kuphela. Ngokucacileyo, intloko yokusebenza yempompo imalunga ne-10m kuphela, oko kukuthi, imeko yokusebenza ye-horizontal. impompo yecasing yokwahlula ikude nendawo yokusebenza echaziweyo ye-Q=3240m3/h, H=32m. Ipompo kweli nqanaba kufuneka ibe ne-cavitation residu, ivolumu iye yanda ngokungalindelekanga, i-cavitation iya kwenzeka ngokuqinisekileyo.

Okwesibini, ukulungiswa kwe-site kuqhutywe ukuvumela umsebenzisi ukuba aqonde ukuba impazamo kwintloko yokukhetha impompo yenziwe. Ukuze kupheliswe i-cavitation, iimeko zokusebenza zempompo kufuneka zibuyiselwe kufuphi neemeko zokusebenza ezichaziweyo ze-Q = 3240m3 / h kunye ne-H = 32m. Indlela yokuvala ivalve yesikolo. Abasebenzisi bakhathazeke kakhulu malunga nokuvala ivalve. Bakholelwa ukuba izinga lokuhamba alanele xa i-valve ivuleke ngokupheleleyo, ibangela ukuhlukana kweqondo lokushisa phakathi kokungena kunye nokuphuma kwe-condenser ukufikelela kwi-33 ° C (ukuba isantya sokuhamba sanele, ukuhluka kweqondo lokushisa eliqhelekileyo phakathi kokungena kunye nokuphuma. kufuneka ibe ngaphantsi kwe-11°C). Ukuba ivalve yokuphuma ivalwe kwakhona, , ngaba isantya sokuhamba kwempompo asiyi kuba sincinci? Ukuze kuqinisekiswe abaqhubi bemizi-mveliso yamandla, baye bacelwa ukuba balungiselele abasebenzi abafanelekileyo ukuba bajonge ngokwahlukeneyo iqondo le-condenser vacuum degree, ukuveliswa kombane, ubushushu bamanzi aphuma kwicondenser kunye nolunye ulwazi olunovakalelo kutshintsho lokuhamba. Abasebenzi beplanti yempompo bavala ngokuthe ngcembe ivalve yokukhupha impompo kwigumbi lokumpompa. . Uxinzelelo lokuphuma lukhula ngokuthe ngcembe njengoko ukuvulwa kwevalve kuncipha. Xa iphakama ukuya kwi-0.28MPa, isandi se-cavitation sempompo sipheliswe ngokupheleleyo, i-degree ye-vacuum ye-condenser iphinda inyuke ukusuka kwi-650 ye-mercury ukuya kwi-700 mercury, kwaye umehluko weqondo lokushisa phakathi kokungena kunye nokuphuma kwe-condenser uyancipha. ukuya ngaphantsi kwe-11℃. Zonke ezi zinto zibonisa ukuba emva kokuba iimeko zokusebenza zibuyela kwindawo echaziweyo, i-cavitation phenomenon yempompo inokupheliswa kwaye ukuhamba kwepompo kubuyela ngokuqhelekileyo (emva kokuba i-cavitation yenzeke kwiimeko zokusebenza zempompo, zombini izinga lokuhamba kunye nentloko iya kuncipha. ). Nangona kunjalo, ukuvulwa kwevalve kumalunga ne-10% kuphela ngeli xesha. Ukuba iqhuba ngolu hlobo ixesha elide, i-valve iya konakala ngokulula kwaye ukusetyenziswa kwamandla kuya kuba kungenamali.

isisombululo:

Ekubeni intloko yepompo yokuqala i-32m, kodwa intloko entsha efunekayo i-12m kuphela, umehluko wentloko ude kakhulu, kwaye indlela elula yokusika i-impeller yokunciphisa intloko ayisekho. Ngoko ke, isicwangciso sasicetywayo ukunciphisa isivinini semoto (ukusuka kwi-960r / m ukuya kwi-740r / m) kunye nokuhlaziya i-pump impeller. Ukuziqhelanisa kamva kwabonisa ukuba esi sisombululo sayisombulula ngokupheleleyo ingxaki. Ayizange isombulule kuphela ingxaki ye-cavitation, kodwa yanciphisa kakhulu ukusetyenziswa kwamandla.

Isitshixo kwingxaki kule meko kukuba ukuphakanyiswa kwe-horizontal icasing casing impompo iphezulu kakhulu.