seth@tkflow.com 
Incazelo Okujwayelekile
Uketshezi, njengoba igama lisho, libonakaliswa yikhono layo lokugeleza.Ihlukile kusuka kokuqinile kulokho kuhlupheka ukonakala ngenxa yokuxineka kwe-shear, noma ngabe kuncane ukucindezelwa kwe-shear. Ukuphela kwenqubomgomo yokuthi isikhathi esanele kufanele sidlule ekuguqukeni kwezokwenzeka. Ngalo mqondo uketshezi lungenasici.
I-Fluids ingahlukaniswa ibe uketshezi namagesi. Uketshezi lungacindezelwa kancane futhi kukhona indawo yamahhala lapho ibekwa esitsheni esivulekile. Ngakolunye uhlangothi, igesi lihlala linwebeka ukugcwalisa isitsha salo. Umphunga uyigesi esondele ezulwini le-liquid.
Uketshezi olwenziwa ngalo unjiniyela ikakhulukazi amanzi. Ingaqukatha amaphesenti amathathu omoya ngesixazululo lapho izingcindezi zasemkhathini ezingaphansi zivame ukukhishwa. Ukuhlinzekwa kumele kwenziwe ngalokhu lapho kuklanywa amaphampu, ama-valve, ama-pipelines, njll.
I-Diesel Injini vertical turbinage turlistage centrifugal inline inline shaft shaft shaft water amanzi drainage pump lolu hlobo lwamaphompu wokudonsa mpo ikakhulukazi asetshenziselwa ukugqwala, ama-grits) okuqukethwe ngaphansi kwendle noma okuqukethwe. Iphampu ye-VTP hlobo mpo yokudonsa mpo kumaphampu wamanzi we-vp, futhi ngesisekelo sokwanda kanye nekholaji, setha i-tube lubrucation ngamanzi. Ingabhema izinga lokushisa elingaphansi kwama-60 ° C, lithumele liqukethe okusanhlamvu okuthile okuqinile (njengensimbi yensimbi nesihlabathi esihle, amalahle, njll.) Amanzi wendle noma amanzi.
Izakhiwo eziphambili ze-fluids zichazwa ngale ndlela elandelayo:
Ubuningi (ρ)
Ubukhulu boketshezi buyinqwaba yayo ngayinye yeyunithi. Esihlelweni se-SI kuvezwa njenge-kg / m3.
Amanzi abukhulu obukhulu baka-1000 kg / m3ngo-4 ° C. Kunokuncipha okuncane kobuningi ngokushisa okwandayo kepha ngezinhloso ezisebenzayo ubuningi bamanzi buyi-1000 kg / m3.
Ubuningi obuhlobene yisilinganiso sobukhulu boketshezi oluya kulokho kwamanzi.
Isisindo esithile (w)
Isisindo esithile se-fluid yisona laso ngevolumu ngalinye leyunithi.Isistimu ye-SI, ivezwa ku n / m3. Emazingeni okushisa ajwayelekile, w ngu-9810 n / m3noma 9,81 Kn / m3(cishe u-10 Kn / m3 Ukuze kube lula ukubalwa).
Amandla adonsela phansi athile (SG)
Ukudonsela phansi okuthile koketshezi kungukulinganisa kwesisindo sethamo elinikeziwe loketshezi kunqwaba yenani elifanayo lamanzi. Ngakho-ke futhi kungukuthi isilinganiso somuntu ongamanzi oshukumisayo kubantu abaningi abahlanzekile, imvamisa bonke ku-15 ° C.
I-Vacumfury Priming Well Point Pump
Model No: TWP
I-TWP Series Montable Diesel Injini yama-Pow Well-Peint Well Well Pow Pumps eziphuthumayo zihlanganiswe ngokuhlanganiswa kwe-Drakos Pump of Singapore kanye Reeoflo Company yeJalimane. Lolu chungechunge lwephampu lungahambisa zonke izinhlobo ezihlanzekile, ezingathathi hlangothi nezilonakalisayo eziqukethe izinhlayiya eziqukethe. Rarulula amaphutha amaningi we-mpompi wokuzikhethela we-mpompis. Lolu hlobo lwesakhiwo esizimele se-POMP UQALA LOKUQHAWULA LOKUQHAWULA kuzoba ukuqala okuzenzakalelayo bese uqala kabusha ngaphandle koketshezi ukuqala kokuqala, inhloko yokungamukeli ingaba ngaphezu kwe-9 m; Idizayini enhle ye-hydraulic nesakhiwo esiyingqayizivele gcina ukusebenza okuphezulu ngaphezulu kwama-75%. Nokufakwa kwesakhiwo okuhlukile kokukhethwa kukho.
Inqwaba modulus (k)
noma izinjongo ezingokoqobo, uketshezi lungabhekwa njengento ebonakalayo. Kodwa-ke, kunezimo ezithile, njengokugeleza okungagxili emapayipi, lapho kufanele kubhekwe khona ukuqina. I-modulus ngobuningi be-elasticity, k, inikezwe ngu:
Lapho kukhuphuka khona kwengcindezi okuyinto, lapho isetshenziswa kuvolumu v, kuphumela ekunciphiseni kwevolumu av. Njengoba ukwehla kwevolumu kumele kuhlotshaniswe nokwanda okulinganayo kokuncipha, i-equation 1 ingavezwa ngokuthi:
noma amanzi, k cishe ama-2 150 MPA emazingeni okushisa ajwayelekile kanye nezingcindezi. Kulandela ukuthi amanzi acishe abe yi-100 angcolisa ngokwengeziwe kunensimbi.
Uketshezi olufanele
Uketshezi olufanele noma oluphelele lungenye lapho kungekho ngcindezi ye-tangential noma ye-shear phakathi kwezinhlayiya zamanzi. Amabutho ahlala esebenza ngokujwayelekile engxenyeni futhi akhawulelwe ekucindezelweni nasekusheshiseni amabutho. Awekho uketshezi lwangempela oluhambisana ngokuphelele nalomqondo, futhi kuwo wonke amanzi ashukumisayo aqhubeka nokuxineka kwamanje okukhona okukhona okunomphumela wokudangala lapho kushunyayelwa. Kodwa-ke, ezinye iziphuzo, kufaka phakathi amanzi, ziseduze noketshezi olufanele, futhi lokhu kucabanga okulula kwenza izindlela zezibalo noma zokuqhafaza ziye zamukelwa kwikhambi lezinkinga ezithile zokugeleza.
Model Cha: I-XBC-VTP
I-XBC-VTP yochungechunge olude olude sha sha shaft shaft uchungechunge lwesigaba esisodwa, amaphampu we-multistage diffusers, okwenziwe ngokuhambisana ne-National Standard GB6245-2006. Sithuthukise ukwakheka nesethenjwa seZinga le-United States Fire Protection Association. Isetshenziselwa ikakhulukazi ukuhlinzekwa kwamanzi ngomlilo ku-petrochemical, igesi yemvelo, isitshalo samandla, izindwangu zekotoni, i-wharf, indiza, ukugcinwa komhlaba, isakhiwo esiphakeme kakhulu nezinye izimboni. Ingasebenza futhi ekuhambeni, ithangi lasolwandle, umkhumbi womlilo kanye nezinye izikhathi zokuhambisa.
Ukuhlakanipha
I-viscosity ye-fluid iyisilinganiso sokumelana kwayo ekucindezelweni kwe-tangential noma kwe-shear. Kuvela ekuxhumaneni nasekubumbeni kwama-molekyuli e-fluid. Onke amanzi wangempela anokubonakala, yize ngamazinga ahlukahlukene. Ukuxineka kwe-Shear ku-SOGER kulingana nokuxazulula kanti ukucindezelwa kwe-vear ku-fluid kulingana nezinga lokufutheka.Ilandela ukuthi akukho ngcindezi ye-vear ku-fluid okuphumule.
Fig.1.
Cabanga ngoketshezi olwenziwe phakathi kwamapuleti amabili asuswe ibanga elifushane kakhulu y ngaphandle (Fig. 1). Ipuleti eliphansi limile ngenkathi ipuleti elingaphezulu lihamba eVelocity v. Ukunyakaza kwe-fluid kucatshangwa ukuthi kwenzeke ochungechungeni lwezendlalelo esincanyana noma i-laminae, mahhala ukuslayida enye ngaphezulu kolunye. Akukho ukugeleza okuwela noma isiphithiphithi. Isendlalelo esiseduze kwepuleti lokuma liphumule ngenkathi ungqimba oluseduze nepuleti elishukumisayo line-velocity v. Isilinganiso sokufunda ubunzima noma i-velocity gradient yi-DV / DY. I-viscosity enamandla noma, kalula, i-viscosity μ inikezwa ngu
Ukuze:
Le nkulumo yengcindezi ye-viscous yaqala yahlelwa nguNewton futhi yaziwa ngokuthi i-equation kaNewton yokubonakala. Cishe wonke uketshezi lunenqwaba yokulingana futhi kubhekiselwa kuwo njengoketshezi lweNewtonia.
Fig.2. Ubudlelwane phakathi kokugunda ukukhathazeka kanye nezinga lokufutheka.
Umdwebo wesi-2 uyisifanekiso esibonisa isimo se-equation 3 futhi ukhombisa ukuziphatha okuhlukile kwama-solids noketshezi ngaphansi kokuncipha kwengcindezi.
I-Viscosity ivezwa kuma-centiposies (PA.S noma NS / M2).
Ezinkinga eziningi maqondana nokunyakaza kwe-fluid, i-viscosity ivela ngobuningi kwifomu μ / P (abazimele ngamandla) futhi kulula ukuqasha igama elilodwa v, owaziwa ngokuthi yi-kinematic viscosity.
Inani le-í kwamafutha asindayo kungenzeka liphakeme njengo-900 x 10-6m2/ s, kanti amanzi, anokuvunywa okuphansi okuphansi, kungu-1,14 x 10 kuphela? M2 / s ku-15 ° C. Ukubonakaliswa kwe-kinematic of ketshezi okukhulayo. Emazingeni okushisa ekamelo, ukubonwa kwe-kinematic komoya kungamahlandla ayi-13 okungamanzi.
Ukungezwani komhlaba kanye ne-capillarity
Qaphela:
Ukubumbana kungukuheha okuthi ama-molecule afanayo anawo omunye komunye.
Ukunamathela kungukuheha okuthi ama-molecule angafani anawo omunye nomunye.
Ukungezwani komhlaba kuyindawo ebonakalayo evumela ukuthi ithonsi lamanzi libanjwe ekumisweni ngompompi, umkhumbi ozogcwaliswa ngoketshezi ngaphezulu kwe-brim futhi ungachithi noma inaliti ukuzenta phezulu koketshezi. Zonke lezi zimo zibangelwa ukubumbana phakathi kwama-molecule ngaphezulu koketshezi oluhlangene olunye uketshezi olungabonakali noma igesi. Kunjengokungathi ingaphezulu liqukethe ulwelwesi olunwebekile, olucindezelwe ngokufanayo, oluthambisa njalo ukukhokhela indawo enamandla. Ngaleyo ndlela sithola ukuthi ama-bubble kagesi ku-ketshezi futhi amaconsi omswakama esibhakabhakeni acishe abe yimodeli.
Amandla wengxabano ebusweni kulo lonke noma yimuphi umugqa wokucabanga endaweni yamahhala alingana nobude bomugqa futhi asebenza ngendlela eqondile kuyo. Ukuxineka okungaphezulu kobude beyunithi ngayinye kuvezwa ku-MN / M. Ubukhulu bawo buncane impela, ngokuba cishe ama-73 MN / M ukuthola amanzi ngokuxhumana nomoya ekushiseni kwegumbi. Kunokuncipha okuncane kwamashumi aphezuluikuvulwa izinga lokushisa elikhulayo.
Kuzinhlelo eziningi kuma-hydraulics, ukungezwani okungaphezulu kubaluleke kakhulu njengoba amabutho ahambisana nawo ngokuvamile akunakuqhathaniswa nokuqhathaniswa namandla ama-hydrostatic namandla ashukumisayo. Ukungezwani komhlaba kubaluleke kakhulu lapho kunendawo yamahhala futhi ubukhulu bomngcele buncane. Ngakho-ke esimweni samamodeli we-hydraulic, imiphumela yengxabano yengxabano, engatholi umphumela wokuPrototype, kungathonya ukusebenza kokugeleza kumodeli, futhi lo mthombo wephutha ekulingiseni kumele ubhekwe lapho uhumusha imiphumela.
Imiphumela yengcindezi yengxabano ishiwo kakhulu esimweni samashubhu omncane avulekele umkhathi. Lokhu kungathatha uhlobo lwamashubhu we-manometer ehlathini lakulebhuku noma elivulekile enhlabathini. Isibonelo, lapho ishubhu lengilazi encane ligcwele emanzini, lizotholakala ukuthi amanzi akhuphuka ngaphakathi kweshubhu, njengoba kukhonjisiwe kuMfanekiso 3.
Indawo yamanzi e-tube, noma ama-meniscus njengoba ibizwa, ikhonsathi phezulu. Umcimbi waziwa ngokuthi uCapillarity, kanye nokuxhumana kweTangentint phakathi kwamanzi futhi ingilazi ikhombisa ukuthi ukuhlangana kwangaphakathi kwamanzi kungaphansi kokunamathela phakathi kwamanzi nengilazi. Ingcindezi yamanzi ngaphakathi kweshubhu eliseduze nendawo engenayo ingaphansi komoya.
Umdwebo 3. I-Capillariarity
I-Mercury iziphatha ngendlela ehlukile, njengoba kukhonjisiwe kuMdwebo 3 (B) .Kuthu Ingcindezi eseduze nendawo yamahhala inkulu kune-Atmospheric.
Imiphumela yeCapillarity kuma-manometers kanye nezingilazi zegeji kungagwenywa ngokusebenzisa amashubhu angaphansi kobubanzi obungaphansi kwe-10 mm.
I-Centrifugal Sea Amanzi Wamanzi Wokuya Kwendawo
Model No: ASN ASNV
Imodeli asn namaphampu we-asnv ayi-volting-stage suction couning amaphampu we-caserifugal ama-centrifugal ama-centrifugal ama-centrifugal
Ingcindezi ye-vapor
Ama-molecule e-liquid anawo amandla okwanele we-kinetic atholakala emzimbeni omkhulu woketshezi endaweni yawo yamahhala futhi adlule emphuleni. Ingcindezi eyayigcwele lo mphunga yaziwa ngokuthi umfutho we-vapor, k. Ukwanda kwezinga lokushisa kuhlotshaniswa nokuphazamiseka okukhulu kwamangqamuzana ngakho-ke ukwanda kwengcindezi ye-vapor. Lapho ingcindezi ye-vapor ilingana nengcindezi yegesi ngaphezulu kwayo, amathumba alinganayo. Ingcindezi ye-vapor yamanzi e-15 ° C ingu-1,72 KPA (1,72 kN / m / m2).
Ingcindezi yasemkhathini
Ingcindezi yomoya emkhathini womhlaba ilinganiswa yi-barometer. Ezingeni lolwandle lengcindezi yasemkhathini zilinganiselwa ku-101 KPA futhi zilinganiswa ngale nzuzo. Kunokuncipha ekucindezelweni komkhathi nge-ukuphakama; Ngokwesibolo, ngo-1 500m kuncishiswa kwaba ngama-88 KPA. Isilinganiselo samanzi esilinganayo sinokuphakama kwe-10,3 m ezingeni lolwandle, futhi kuvame ukubizwa ngokuthi yi-barometer yamanzi. Ukuphakama kuyinto yokuqonda, ngoba ingcindezi yamanzi ye-vapor ibingavimba i-vacuum ephelele etholakala. I-Mercury iyi-barometric liquid ephakeme kakhulu, ngoba inengcindezi ye-vapor enganakwa. Futhi, ukuqina kwalo okuphezulu kuholela kukholamu yokuphakama okunengqondo -About 0,75 m ezingeni lolwandle.
Njengoba izingcindezi eziningi ezihlangabezana nazo kuma-hydraulics zingaphezulu kwengcindezi yasemkhathini futhi zilinganiswa ngamathuluzi aqopha ngokungenakuqopha, kulula ukubheka ingcindezi ye-arveric njenge-datum, ie zero. Izingcindezi zibe sezibizwa ngokuthi izingcindezi ze-gauge lapho zicindezela ngaphezulu kwe-armospheric kanye ne-vacuum lapho ngaphansi kwayo. Uma ingcindezi ye-zero yangempela ithathwa njenge-datum, izingcindezi kuthiwa ziphelele. Esahlukweni 5 lapho kuxoxwa khona, zonke izibalo zivezwa kumagama aphelele ama-barometer amagama, amagama we-IEEA = 0 Ibha ye-Bar
Isikhathi sePosi: Mar-20-2024