(1) kev hloov ntawm qhov qhib qhov rooj
Hloov lub twj tso kua mis tawm, nws qhov essence yog hloov tus cwj pwm ntawm tus cwj pwm. Raws li pom hauv qab no, thaum lub valve kaw lawm, lub zos ua haujlwm nce qhov kav dej, qhov kev sib txuas ntawm cov kav dej, ua haujlwm los ntawm M mus rau M1, txo cov tsheb khiav ntawm QM mus rau QM1. Thaum lub valve qhib thaum lub kav dej tuaj yeem txo, cov yeeb yam pipeline tus cwj pwm ua flatter, ua hauj lwm taw tes rau M2, nce tsheb mus rau QM2.
Li qub tswj cov ndlwg yooj yim thiab ceev, thiab qhov ndlwg sib txawv tsis tu ncua thiab tsim kev nruam ntej ntawm cov yeeb yam tshuaj. Yog li nws yog dav siv. Disadvantages yog lub sijhawm kaw kaw, ua haujlwm tsis tau, nce zog noj, tsis yog nyiaj txiag.
(2) hloov pauv ceev
Hloov qhov ceev ntawm lub twj tso kua mis yog qhov tseem ceeb hloov tus xeeb ceem ntawm lub twj tso kua mis. Pumping ceev ntawm n, m, raws li pom hauv qab no, yog hais tias tus ceev twj huam tuaj rau N1, lub twj puv cwj pwm H - Q txav, ua hauj lwm los ntawm m rau M1, nce tsheb khiav ntawm QM mus rau QM1. Yog N2 twj ceev, ua haujlwm rau M2, khiav mus rau QM2.
Txoj kev no yuav tsum ceev ceev los sis qis dua tus nqi qeeb zog, thiab nyuaj rau kev nruam nrawm, nws tsis tshua siv tshuaj lom neeg ntau lawm.