Tshem tawm thiab ntws
(1) Kev tshem tawm v Qhov ntim ntawm cov kua tso tawm suav los ntawm kev hloov pauv ntawm qhov loj me ntawm qhov sib khi kab noj hniav yog xam los ntawm kev xa xov ntxaiv ntawm qhov hloov pauv v hydraulic twj tso kua mis ib kiv puag ncig (los yog ib qho arc), uas yog hu ua kev hloov ntawm hydraulic. twj tso kua mis, uas yog, qhov ntim ntawm cov kua uas tuaj yeem tawm los ntawm ib lub kiv puag ncig ntawm lub twj tso kua mis yam tsis muaj to. Chav tsev raug cai ntawm kev ntsuas rau kev hloov pauv yog m3 / r (cubic meters ib kiv puag ncig), thiab chav tsev feem ntau siv hauv engineering xyaum yog mL / r (milliliters ib kiv puag ncig) (1mL / r=lOOmm3 / r, 1m3 / r =106 mL/r).
(2) Lub ntim ntawm cov kua tso tawm los ntawm theoretical flow QT hydraulic twj tso kua mis suav los ntawm kev hloov pauv ntawm geometric loj ntawm nws cov kab noj hniav sib khi hauv chav tsev lub sijhawm, uas yog, qhov ntim ntawm cov kua uas tuaj yeem tawm hauv ib lub sijhawm tsis muaj dej, hu ua lub theoretical txaus tus nqi ntawm lub twj tso kua mis hydraulic, uas feem ntau yog hais txog qhov nruab nrab theoretical txaus tus nqi txawm hais tias lub pulsation ntawm cov kua tso tawm los ntawm lub twj tso kua mis hydraulic. Hauv kev xyaum ua engineering, tus nqi ntws ntawm lub twj tso kua mis nyob rau hauv xoom qhov sib txawv siab feem ntau suav hais tias yog qhov theoretical flow.
Chav tsev raws cai ntawm kev ntsuas rau cov nqi ntws (theoretical, instantaneous, nruab nrab, qhov tseeb, to, thiab lwm yam) yog m3 / s (cubic meters ib ob). Cov chav tsev uas nquag siv hauv engineering xyaum yog L/min (litres ib feeb) (1L/min=106 mm3/min, 1m3/s=60000L/min).
Kev sib raug zoo ntawm cov theoretical flow rate qt ntawm lub twj tso kua mis hydraulic thiab qhov hloov V ntawm lub twj tso kua mis yog raws li nram no:
qt=(Vn/60)×l{2}} (m3/s) (1-1)
Formula V - tshem tawm hydraulic twj tso kua mis, mL / r;
n - qhov ceev ntawm lub twj tso kua mis hydraulic, r / min.
(3) Qhov tam sim no ntws ntawm QINST twj tso kua mis ntawm txhua qhov tam sim no yog hu ua instantaneous flow ntawm hydraulic twj tso kua mis, uas feem ntau yog hais txog lub instantaneous theoretical (geometric) ntws, uas muaj ib tug tej yam pulsation.
(4) Qhov nruab nrab ntws QAV Tus nqi ntws xam raws li lub sijhawm nruab nrab yog hu ua qhov nruab nrab ntws ntawm hydraulic twj.
(5) Thaum lub ntsuas ntws QN hydraulic twj tso kua mis ua haujlwm raws li qhov ntsuas siab thiab ntsuas nrawm, cov zis ntws tawm uas lub twj tso kua mis hydraulic yuav tsum xyuas kom meej raws li cov qauv ntsuas.
(6) Qhov tseeb txaus q Qhov tseeb tso tawm ntawm lub twj tso kua mis hydraulic thaum nws ua haujlwm yog hu ua qhov tseeb ntws ntawm lub twj hydraulic.
Vim tias cov dej xau ntawm lub twj tso kua mis hydraulic thiab qhov poob ntawm ib feem ntawm cov dej ntws vim yog compression ntawm cov kua, rated flow QN thiab qhov tseeb txaus Q ntawm hydraulic twj tso kua mis yog me dua qhov theoretical flow QT ntawm lub twj tso kua mis.
Qhov tseeb tsheb q tuaj yeem qhia tau tias
q=qt-q1=Vn-k1△p (1-2)
Q1 - tus nqi ntws poob los ntawm hydraulic twj tso kua mis mus rau sab nraud los yog lub siab tsis tshua muaj chamber vim to thiab compression;
K1 - to coefficient ntawm lub twj tso kua mis;
△ P - lub siab sib txawv ntawm lub twj tso kua mis, thaum lub inlet (gauge siab los yog txheeb ze siab) siab ntawm lub twj tso kua mis yog kwv yees li xoom, lub qhov hluav taws xob ua hauj lwm siab P ntawm lub twj tso kua mis yuav siv tau hloov, tib yam hauv qab no.
Lwm cov cim muaj lub ntsiab lus zoo ib yam.
Los ntawm kev sib npaug (1-2), nws tuaj yeem pom tau tias Q1 thiab Q muaj feem cuam tshuam nrog kev ua haujlwm siab p ntawm lub twj tso kua mis, thiab thaum lub zog ua haujlwm nce, qhov poob qis Q1 nce, thaum qhov tseeb tso zis ntws Q txo.
