Ukukhethwa kwamapharamitha ayisisekelo

创建于03.17

(3) Ukukhethwa kwamapharamitha ayisisekelo

① Ingcindezi elinganiselwe yamaphampu asebenza ngogesi anezinhlobo ezahlukene zengcindezi yokusebenza kanye nokucaciswa kwayo kuhlukile.

Ingcindezi yokuphumayo engu-PP yepompo ye-hydraulic izoba isamba somfutho we-P1 odingwa i-actuator kanye nokulahlekelwa okuphelele kwengcindezi ∑△ P (okuhlanganisa ukulahlekelwa kwengcindezi yepayipi kanye nokulahlekelwa kwengcindezi yevalvu yokulawula) kumjikelezo wokungenisa uwoyela wesistimu, okungukuthi.

pp≥P1+∑△p (1-42)

I-pump output pressure PP ngeke idlule ingcindezi elinganiselwe kusampula. Ngokuvamile, ingcindezi evamile yokusebenza yesistimu ye-hydraulic emishini engaguquki ingakhethwa njenge-70% - 80% yengcindezi elinganiselwe yepompo, kanye nengcindezi yokusebenza yesistimu ye-hydraulic ohlelweni noma imishini yokuhamba (njengezimoto nemishini yokwakha) edinga ukuthembeka okuphezulu kokusebenza ingakhethwa njenge-50% - 60% yengcindezi elinganiselwe yepompo.

Ingcindezi yokusebenza ephezulu kusampula yomkhiqizo ingcindezi evumelekile uma kuba nomthelela wesikhathi esifushane. Uma ukucindezela komthelela kwenzeka kumjikelezo ngamunye, impilo yepompo izofinyezwa kakhulu, futhi ngisho nepompo izolimala.

Ukucindezela okukhulu kanye nesivinini esiphezulu sepompo akufanele kusetshenziswe ngesikhathi esifanayo ukwandisa impilo yesevisi yepompo.

② Ukugeleza kwe-QP yephampu ye-hydraulic ephumayo ihlobene nesimo sokusebenza. Ukugeleza kokuphumayo kwe-QP yephampu ye-hydraulic kufanele ihlanganise ukugeleza okudingekayo kwe-actuator (lapho kunama-actuator amaningi, ukugeleza okuphelele kungabalwa kusukela kumdwebo womjikelezo wesikhathi sokugeleza) kanye nesamba sokuvuza kwesici ngasinye, okungukuthi, singanqunywa ngefomula elandelayo:

qp≥K(∑q)ubuningi (1-43)

Lapho u-k eyi-coefficient yokuvuza yesistimu, ngokuvamile engu-1.1-1.3 (inani elincane lokugeleza okukhulu kanye nenani elikhulu lokugeleza okuncane);

(∑ q) ubuningi -- izinga lokugeleza eliphezulu le-hydraulic actuator esebenza ngesikhathi esifanayo, m3/s.

Ohlelweni oluhlala lusebenzisa i-valve yokugeleza ukuze lulawule isivinini phakathi nenqubo yokusebenza, ukugeleza okuchichimayo okuncane kwe-valve yokuchichima kufanele kwengezwe, ngokuvamile okungu-2-3l/min. Ngezinye izikhathi, kuyadingeka ukucabangela ukuncishiswa kokugeleza okubangelwa ukulahlekelwa kwemoto (imvamisa mayelana ne-LR / s) nokunciphisa ukugeleza okubangelwa ukuncishiswa kokusebenza kahle kwepompo ye-hydraulic ngemva kokusetshenziswa isikhathi eside (imvamisa i-5% - 7%). Ukususwa, ibanga lesivinini nokugeleza kokuphumayo ngaphansi kwengcindezi ehlukile yesivinini esijwayelekile kuvame ukunikezwa kusampula.

③ I-Prime Mover prime Mover inezinhlobo ezimbili: injini nenjini yomlilo yangaphakathi. Izidingo zomguquli oyinhloko kanye nokunqunywa kwamandla omnyakazo oyinhloko.

④ Isivinini kanye nesivinini sokufuduka kuhlobene nempilo yepompo, ukuqina, i-cavitation nomsindo. Nakuba ijubane elivumelekile liboniswa eshidini lezicaciso zobuchwepheshe lomkhiqizo, kungcono ukulisebenzisa ngesivinini esingcono kakhulu esilungele injongo, futhi akumele lidlule isivinini esikhulu. Ikakhulukazi lapho iphampu ye-hydraulic iqhutshwa injini yomlilo yangaphakathi, kunzima ukumunca amafutha ngesivinini esiphansi lapho izinga lokushisa likawoyela liphansi, futhi kunengozi yokuhluleka ukuthunjwa ngenxa yokugcoba okungalungile. Ngesivinini esikhulu, kungenzeka ukuthi i-cavitation, vibration, ukugqoka okungavamile nokungazinzi kokugeleza kufanele kucatshangelwe. Ukushintsha okukhulu kwejubane lokujikeleza nakho kunethonya elikhulu emandleni ezingxenye zangaphakathi zepompo.

Lapho ukugeleza okudingekayo kwesistimu kwaziwa, isivinini kanye nokufuduka kwepompo ye-hydraulic kufanele kucatshangelwe ngokugcwele. Ngokuvamile, inani lereferensi kufanele libalwe kuqala ngokwezinga lokugeleza elidingekayo lesistimu QV (L / min), isivinini esiyinhloko sepompo ye-hydraulic n1 (R / min) kanye nokusebenza kahle kwevolumu yephampu η V (okungathathwa ngokuthi η v = 0.9 ngokuya ngesampula yomkhiqizo)

Vg=1000qv/(n1ηv)(1-44)

Ngepompo yomthamo, ukugeleza kwepompo kokugcina kufanele kuhambisane nokugeleza okudingwa isistimu ngangokunokwenzeka ukuze kugwenywe ukulahlekelwa amandla amaningi.

⑤ Inani elisebenza kahle lepompo elisebenza kahle liwumfanekiso wekhwalithi yepompo. Uma ingcindezi iphezulu, ijubane liphansi, kuyancipha ukusebenza kahle kwe-volumetric yepompo, kanye nokusebenza kahle kwe-volumetric kuncipha lapho ukugudluzwa kwephampu eguquguqukayo yokugudluza kulungiswa. Uma isivinini singaguquki, ukusebenza kahle okuphelele kwephampu kuphakeme kakhulu ngaphansi kwengcindezi ethile, futhi ukusebenza kahle okuphelele kwephampu eguquguqukayo yokugudluza kuphezulu kakhulu ngaphansi kokugudluzwa okuthile nokucindezela. Ukusebenza kahle okuphelele kwepompo kunethonya elikhulu ekusebenzeni kahle kwesistimu ye-hydraulic. Kufanele sikhethe iphampu ngokusebenza kahle okuphezulu futhi sizame ukwenza iphampu isebenze endaweni esebenza kahle kakhulu yesimo sokusebenza.

(4) Uma amandla okuzi-priming asetshenziswa kusekethe evulekile, iphampu idinga ukuba nomthamo othile wokuzilungisa. I-Cavitation kanye ne-cavitation ingase ingalimazi nje ipompo, kodwa futhi ibangele ukudlidliza nomsindo, okuholela esenzweni esibi se-valve yokulawula kanye ne-actuator, enomthelela omubi kulo lonke uhlelo lwe-hydraulic. Ngenkathi uqinisekisa amandla okuzilungiselela wepompo, kuyadingeka ukunquma indawo yokufaka yepompo ngokuhlobene nezinga loketshezi lwethangi likawoyela bese uklama ipayipi lokudonsa uwoyela ngesisekelo sokubala ukumelana kwepayipi lokudonsa uwoyela ngokubheka isimo sokushisa sensiza yedivayisi ye-hydraulic kanye ne-viscosity kawoyela we-hydraulic. Ngaphezu kwalokho, inani elibaliwe lomthamo wokuzilungisa wephampu kufanele libe nemajini eyanele.

(5) Iphampu ye-hydraulic yomsindo iwumthombo oyinhloko womsindo wesistimu ye-hydraulic. Endabeni yomsindo olinganiselwe, iphampu yomsindo ophansi noma isivinini esiphansi kufanele sisetshenziswe.

Shiya imininingwane yakho futhi
sizokuthinta.

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