Niaj hnub no, tus editor yuav qhia rau koj yuav ua li cas los daws cov teeb meem ntawm kev tswj li qub. Cia peb saib!

Dab tsi yuav tsum tau kuaj xyuas thaum muaj teeb meem tshwm sim?

1. Sab hauv phab ntsa ntawm lub cev valve

Lub sab hauv ntawm lub valve lub cev feem ntau cuam tshuam thiab corroded los ntawm nruab nrab thaum tswj li qub yog ua hauj lwm nyob rau hauv high-pressure sib txawv thiab corrosive xov xwm chaw, yog li nws yog ib qho tseem ceeb uas yuav tau xyuam xim rau kev ntsuam xyuas nws corrosion thiab siab tsis kam.

2. Valve rooj

Lub puab nto ntawm cov xov uas ruaj lub rooj zaum valve corrodes sai sai thaum lub regulating valve ua hauj lwm, uas ua rau lub valve lub rooj yuav looser. Qhov no yog vim qhov nruab nrab nkag mus. Thaum kuaj xyuas, nco ntsoov qhov no. Lub rooj zaum valve sealing nto yuav tsum tau kuaj xyuas kom tsis zoo thaum lub valve ua haujlwm nyob rau hauv qhov sib txawv ntawm qhov sib txawv.

3. Spool

Lub regulating valvemovable tivthaiv thaum nws ua haujlwm yog hu uavalve tub ntxhais. Nws yog ib qho uas cov xov xwm tau puas thiab eroded tshaj plaws. Txhua feem ntawm lub valve tub ntxhais yuav tsum muaj nws cov hnav thiab corrosion zoo tshuaj xyuas thaum kho. Nws yuav tsum raug sau tseg tias qhov hnav ntawm lub valve tseem ceeb (cavitation) hnyav dua thaum lub siab sib txawv yog qhov tseem ceeb. Nws yog ib qho tsim nyog los kho lub valve tub ntxhais yog tias nws puas loj heev. Tsis tas li ntawd, koj yuav tsum nco ntsoov txog qhov sib piv tshwm sim ntawm lub qia valve nrog rau kev sib txuas xoob nrog lub valve core.

4. "O" rings thiab lwm yam gaskets

Txawm nws laus los yog tawg.

5. PTFE ntim, sealing roj

Txawm hais tias nws yog kev laus thiab seb qhov mating nto puas, nws yuav tsum tau hloov yog tias tsim nyog.

Lub regulating valve ua suab nrov, kuv yuav ua li cas?

1. Tshem tawm suab nrov resonance

Lub zog yuav tsis dhau mus txog thaum lub regulating valve resonates, tsim lub suab nrov uas nrov tshaj 100 dB. Qee qhov muaj suab nrov tsawg tab sis muaj zog vibrations, qee qhov muaj suab nrov tab sis tsis muaj zog vibrations, thaum qee qhov muaj suab nrov thiab nrov vibrations.

Ib lub suab nrov, feem ntau ntawm cov zaus ntawm 3000 thiab 7000 Hz, yog tsim los ntawm lub suab nrov no. Tau kawg, lub suab nrov yuav ploj mus ntawm nws tus kheej yog tias lub resonance raug tshem tawm.

2. Tshem tawm cov suab nrov cavitation

Lub hauv paus ua rau lub suab nrov hydrodynamic yog cavitation. Lub zog hauv zos turbulence thiab cavitation suab nrov yog tsim los ntawm kev kub ceev uas tshwm sim thaum npuas vau thaum cavitation.

Lub suab nrov no muaj ntau qhov sib txawv thiab lub suab nrov uas zoo li cov kua dej uas muaj pebbles thiab xuab zeb. Ib txoj hauv kev zoo ntawm kev tshem tawm thiab txiav cov suab nrov yog kom txo qis thiab txo cov cavitation.

3. Siv cov kav dej tuab tuab

Ib qho kev xaiv los daws cov suab nrov yog siv cov kav dej nrog cov phab ntsa muaj zog. Kev siv cov kav dej tuab tuaj yeem txo cov suab nrov los ntawm 0 txog 20 decibels, thaum cov kav dej nyias nyias tuaj yeem ua kom nrov nrov los ntawm 5 decibels. Qhov muaj zog lub suab nrov txo cov nyhuv, qhov tuab ntawm cov yeeb nkab phab ntsa ntawm tib lub yeeb nkab txoj kab uas hla thiab qhov loj dua cov yeeb nkab txoj kab uas hla ntawm tib phab ntsa thickness.

Piv txwv li, qhov txo qis suab nrov tuaj yeem yog -3.5, -2 (uas yog, tsa), 0, 3, thiab 6 thaum phab ntsa tuab ntawm DN200 yeeb nkab yog 6.25, 6.75, 8, 10, 12.5, 15, 18, 20 , thiab 21.5mm. 12, 13, 14, thiab 14.5 dB. Lawm, tus nqi nce nrog phab ntsa thickness.

4. Siv cov khoom siv suab nrov

Qhov no kuj yog qhov nrov tshaj plaws thiab muaj txiaj ntsig zoo rau kev ua cov suab nrov. Cov kav dej tuaj yeem muab qhwv nrog cov ntaub ntawv uas nqus suab tom qab li qub thiab cov suab nrov.

Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias lub suab nrov mus deb heev los ntawm cov dej ntws, yog li siv cov kav dej tuab tuab lossis qhwv cov khoom siv suab nrov yuav tsis tshem tawm cov suab nrov.

Vim nws tus nqi siab dua, txoj hauv kev no yog qhov zoo tshaj plaws rau cov xwm txheej uas cov suab nrov qis thiab cov kav dej ntev yog luv.

5.Series muffler

Aerodynamic suab nrov tuaj yeem tshem tawm siv cov txheej txheem no. Nws muaj peev xwm ua tau zoo txo ​​cov suab nrov sib txuas mus rau txheej txheej txheej txheej thiab tshem tawm suab nrov hauv cov kua. Loj loj txaus los yog siab poob siab piv thaj chaw ua ntej thiab tom qab lub valve yog qhov zoo tshaj plaws rau txoj kev no txoj kev lag luam thiab kev ua tau zoo.

Absorptive in-line silencers yog ib txoj hauv kev zoo los txiav suab nrov. Txawm li cas los xij, qhov attenuation feem ntau txwv rau kwv yees li 25 dB vim yog cov nqi them.

6. Lub thawv tsis muaj suab nrov

Siv lub thawv tsis muaj suab nrov, lub tsev thiab lub tsev los cais cov suab nrov sab hauv thiab txo qis ib puag ncig ib puag ncig rau qhov kev siv tau.

7. Series throttling

Txoj kev throttling series yog siv thaum tswj lub valve siab siab (△P / P1≥0.8). Qhov no txhais tau hais tias tag nrho lub siab poob yog faib nruab nrab ntawm lub regulating valve thiab lub throttling lub caij ruaj khov tom qab lub valve. Txoj hauv kev zoo tshaj plaws los txo cov suab nrov yog los ntawm cov kua dej ntws txwv cov phaj, diffusers, thiab lwm yam.

Lub diffuser yuav tsum tau tsim raws li tus qauv tsim (lub cev zoo, qhov loj me) rau qhov siab tshaj plaws diffuser efficiency.