High-Temperature Steam Testing Guide rau Vortex Flowmeters
Cov chav kub kub siab tshaj 300 ° C tuaj yeem ua rau cov vortex flowmeters tau yooj yim los yog ua rau muaj kev puas tsuaj yog tias kuaj tsis raug. Phau ntawv qhia kev nyab xeeb no pab kom tsis txhob muaj cov ntaub ntawv yuam kev, cov cuab yeej hluav taws xob, thiab kev pheej hmoo ntawm kev nyab xeeb.
1. Pre-Test Safety & Npaj
Ua ntej kuaj, txo cov yeeb nkab siab thiab qhov kub thiab txias kom muaj kev nyab xeeb, thiab hnav cov hnab looj tes tiv thaiv tshav kub thiab tiv thaiv lub ntsej muag.
Txoj cai tseem ceeb ntawm rwb thaiv tsev: Tsis txhob tshem cov yeeb nkab rwb thaiv tsev, tab sis kom tsawg kawg yog ib nrab ntawm lub sensor txuas ntxiv pas nrig kom txias. Ncua lub transmitter nyob rau hauv rwb thaiv tsev yuav overheat thiab puas electronics.
2. Kev Txhim Kho & Ncaj Yeeb Nkab Yuav Tsum Tau
Tsis ruaj khov ntws los ntawm lub luj tshib lossis li qub ua rau muaj teeb meem loj heev.
- Upstream ncaj yeeb nkab:15D – 20D(tshaj 40D yog tias cov tswj valve nyob ze)
- Downstream ncaj yeeb nkab:≥5DKev nyeem tsis zoo feem ntau yog los ntawm kev teeb tsa tsis zoo, tsis yog lub 'meter' nws tus kheej.
3. Parameter Chaw: Saturated vs. Superheated Chav
Kev sib xyaw ua ke ntawm chav ua noj yog qhov ua rau cov ntaub ntawv tsis raug.
- Superheated chav: Yuav tsum tau them nyiaj kub thiab siab.
- Saturated chav: Xav tau yam tsawg kawg ib qho kev them nyiaj tsis zoo. Cov rwb thaiv tsev tsis zoo yuav ua rau cov chav dej saturated rau hauv chav ntub dej, ua rau cov txiaj ntsig tsis raug yog tias tsis kho. Xyuas kom tseeb RTD thiab siab transmitter tso chaw.
4. Kev kuaj teeb liab: Tshawb xyuas Waveforms, tsis yog nyeem ntawv xwb
Siv lub oscilloscope los xyuas kom huv si pulse signals. Lub suab nrov ntau dhau los ntawm cov yeeb nkab vibration. Txhim kho kev co-resistant mounts thiab pads kom txo kev cuam tshuam.
