Puas muaj qhov sib txawv ntawm WC6 thiab WC9 valve khoom, qhov txawv qhov twg?

Puas muaj qhov sib txawv ntawm WC6 thiab WC9 valve khoom, qhov txawv qhov twg?

Qhov tseem ceeb parameter ntawm lub valve yog qhov txaus coefficient thiab cavitation coefficient ntawm lub valve, uas yog feem ntau muaj nyob rau hauv cov ntaub ntawv ntawm li qub uas ua nyob rau hauv advanced industrial teb chaws, thiab txawm luam nyob rau hauv cov qauv. Peb lub teb chaws tsim lub valve yeej tsis muaj cov ntaub ntawv no nam, vim hais tias tau qhov no nam ntawm cov ntaub ntawv yuav tsum tau ua qhov kev sim kom muaj peev xwm muab tso rau pem hauv ntej, qhov no yog peb lub teb chaws thiab lub ntiaj teb no advanced theem ntawm lub valve kis ib tug ntawm cov tseem ceeb kev ua tau zoo. .
A, valve flow coefficient
Lub valve flow coefficient yog ib qho kev ntsuas ntawm lub valve flow peev Performance index, qhov ntau dua tus nqi coefficient, cov kua ntws los ntawm lub valve thaum lub siab poob qis dua.
Raws li KV tus nqi xam cov mis
Qhov twg: KV - flow coefficient Q - ntim ntws m3 / h δ P - valve siab poob barP - kua ntom ntom kg / m3
Ob, valve cavitation coefficient
Cov cavitation coefficient δ yog siv los txiav txim seb hom kev tsim kho valve xaiv rau kev tswj ntws.
Qhov twg: H1 - siab mH2 - qhov sib txawv ntawm atmospheric siab thiab saturated vapor siab sib xws rau qhov kub thiab txias M δ P - qhov sib txawv ntawm siab ua ntej thiab tom qab valve M
Qhov tso cai cavitation coefficient δ sib txawv ntawm cov li qub vim lawv cov kev teeb tsa sib txawv. Raws li pom hauv daim duab. Yog tias qhov ntsuas cavitation coefficient ntau dua li qhov tso cai cavitation coefficient, cov lus qhia siv tau thiab cavitation yuav tsis tshwm sim. Yog hais tias qhov tso cai cavitation coefficient yog 2.5, ces:
Yog tias δ> 2.5, cavitation yuav tsis tshwm sim.
Thaum 2.5 > δ > 1.5, me ntsis cavitation tshwm sim.
Thaum δ Kev siv txuas ntxiv ntawm δ Qhov yooj yim thiab kev khiav hauj lwm tus yam ntxwv nkhaus ntawm li qub tsis qhia thaum cavitation tshwm sim, cia nyob ib leeg lub ntsiab lus ntawm kev khiav hauj lwm txwv mus txog. Los ntawm kev suav saum toj no yog qhov tseeb. Yog li ntawd, cavitation yog tsim vim hais tias cov kua accelerates los ntawm ib seem ntawm shrinking seem nyob rau hauv tus txheej txheem ntawm ntws, ib feem ntawm cov kua yog vaporized, thiab cov npuas generated ces tawg nyob rau hauv lub qhib seem tom qab lub valve, uas muaj peb manifestations:
(1) Suab nrov
(2) kev co (kev puas tsuaj loj rau lub hauv paus thiab cov qauv tsim, ua rau qaug zog tawg)
(3) Kev puas tsuaj rau cov khoom siv (kev yaig ntawm lub cev thiab cov yeeb nkab)
Los ntawm kev suav saum toj no, nws tsis yog qhov nyuaj kom pom tias cavitation muaj feem cuam tshuam nrog lub siab H1 tom qab lub valve. Kev nce H1 yuav pom tseeb hloov qhov xwm txheej thiab txhim kho txoj hauv kev:
A. Nruab valve qis hauv kab.
B. Nruab ib lub phaj orifice nyob rau hauv cov yeeb nkab tom qab lub valve kom muaj zog.
C. Lub qhov hluav taws xob valve yog qhib thiab ncaj qha mus rau hauv lub reservoir, uas ua rau kom qhov chaw npuas bursting thiab txo cov cavitation yaig.
Kev tsom xam ntawm plaub yam saum toj no, suav nrog lub rooj vag valve, npauj npaim valve cov yam ntxwv tseem ceeb thiab cov npe tsis muaj npe rau kev xaiv yooj yim. Ob qhov tsis tseem ceeb ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm valve.
Puas muaj qhov sib txawv ntawm cov khoom siv valve WC6 thiab WC9? Qhov txawv yog dab tsi? Cov khoom siv valve WC6 thiab WC9: WC6 thiab WC9 yog cov hlau alloy, lawv muaj cov khoom siv tib yam, nrog tib lub zog tensile, yield zog thiab elongation ntawm chav tsev kub.
Valve khoom WC6 thiab WC9
Ob leeg WC6 thiab WC9 yog cov hlau alloy nrog lub hauv paus zoo tib yam khoom siv thiab tib lub zog tensile, yield zog thiab elongation ntawm chav tsev kub.
Qhov txawv yog cov ntsiab lus alloy. Piv nrog WC6, WC9 muaj ntau cov chromium thiab molybdenum, yog li nws lub zog txhua yam ntawm qhov kub thiab txias yog qhov zoo dua. Tsis tas li ntawd, WC9 muaj lub peev xwm zoo dua los tiv thaiv scouring.