Gịnị bụ NPSH na otu esi egbochi cavitation onu

NPSH bụ oke dị mkpa nke na-atụ ike nke mgbapụta ma ọ bụ igwe mmiri ndị ọzọ iji gbochie vaporization mmiri n'okpuru ọnọdụ akọwapụtara. Ọ na-anọchi anya ike ngafe kwa nkeji arọ nke mmiri mmiri na ntinye mgbapụta nke karịrị nrụgide vaporization.

Ihe ngosi nke cavitation bụ n'ihi gas na-emepụta site na mmiri mmiri na ntinye nke impeller n'okpuru ụfọdụ nrụgide nrụgide n'oge ọrụ nke mgbapụta ahụ, na-akpụ afụ. Afụ ndị a, n'okpuru mmetụta mmegharị nke akụkụ mmiri mmiri, na-ebute mbuze na elu igwe nke impeller, si otú ahụ na-emebi impeller na ọla ndị ọzọ. Iji gbochie cavitation, enwere ike ịme ihe ndị a:

Mụbaa nrụgide mbubata. Site n'ịbawanye nrụgide ntinye, enwere ike ịbawanye nrụgide mmiri na ihe omume cavitation nwere ike ibelata.

Belata ọnụego eruba. Mbelata ọnụego nke mmiri na-asọpụta nwere ike ibelata ogo mbelata nke nrụgide mmiri, belata nguzobe nke afụ, ma gbochie ihe omume cavitation.

Melite akụrụngwa akụrụngwa. Site n'ịkwalite nhazi nke ngwá ọrụ ahụ, enwere ike ibelata nrụgide nke mmiri mmiri, na-egbochi nke ọma ihe omume nke egosipụta na cavitation.

Mụbaa oke cavitation dị irè. NPSHa dị irè bụ NPSHa nke ngwaọrụ (pipeline), nke metụtara usoro ntinye nke mgbapụta ahụ. Ịbawanye uru ya nwere ike ịkwalite ọrụ mgbochi cavitation nke mgbapụta ahụ.

Wedata NPSH dị mkpa. NPSHr bụ ihe dị mkpa nke ọrụ cavitation nke mgbapụta n'onwe ya, na ibelata uru ya nwere ike imeziwanye ọrụ mgbochi cavitation nke mgbapụta ahụ.

Site na usoro ndị a, enwere ike igbochi cavitation nke ọma ma nwee ike ichekwa ọrụ nfuli na igwe mmiri ndị ọzọ.

Ọtụtụ nfuli nwere ike ịbawanye elu mmịpụta onwe ha, mana ha enweghị ike idozi nsogbu nke cavitation. Ọnụahịa kasị elu nke VSPike agụụ onwe priming mgbapụtanwere ezigbo mgbochi cavitation arụmọrụ, na a kacha elu suction elu karịa 8 mita, na ọ gaghị emepụta cavitation onu.