Dab tsi yog cov teeb meem nquag thiab kev siv tsis meej ntawm cov roj detectors?
Lub ncauj lus ntawm kev siv cov tshuaj ntsuam cov roj tau muaj ntau cov xim. Niaj hnub no, peb tau sau thiab sau qee cov lus nug uas nquag muaj thiab kev nkag siab tsis meej txog lawv siv. Nov yog cov lus teb rau cov lus nug no:
1. Dab tsi yog cov pa roj muaj peev xwm (kua) kev puas tsuaj rau kev tua hluav taws thiab txuag ib puag ncig?
Teb: (1) Cov phom sij ntawm cov pa oxygen:
Thaum cov pa oxygen concentration ntau tshaj li 23%, qee cov tshuaj yuav ua rau muaj kev sib txuas, thiab nws yog qhov sib txuas. Kev tiv thaiv cov ris tsho tiv thaiv no kuj tseem tuaj yeem hlawv hauv huab cua nrog cov ntsiab lus oxygen thiab tsis muaj kev tiv thaiv. Thaum nws tshaj 70%, nws yuav ua rau raug mob rau tib neeg lub cev, ua rau "oxygen" oxygen "lom;
Thaum cov pa oxygen yog qis dua 12%, cov neeg txiav txim siab yuav ploj, ua tsis taus pa yuav ploj, yuav tshwm sim xws li daim di ncauj nyuaj, thiab cov tsos mob xws li ntshav daim di ncauj yuav tshwm sim. Thaum nws qis dua 10%, ntuav, immobility, tsis nco qab, thiab kev tuag yuav tshwm sim.
(2) Cov kev phom sij ntawm cov roj toxic (kua):
Gases, vapors, thiab cov pa luam yeeb (sulgrur sulfide, sulfur sulfide, carbon monoxide, tshuaj cholorine, roj av, organic pa).
(3) Cov kev phom sij ntawm cov pa roj tawg lossis tawg roj:
Kev ua ntau dhau ntawm cov roj, chav, lossis hmoov av tuaj yeem ua rau kev sib txuas lossis tawg.
2. Dab tsi ntawm cov roj detectors twg tuaj yeem faib raws li lawv cov ntsiab cai ua haujlwm?
Teb: Mloog: Ultrasonic, Infrared Acoustic;
Saib: Cov Duab Qeb;
Wen: catalytic combustion, electrofochemistry ir / laser, pid.
3. Dab tsi yog lub hauv paus ntsiab lus ntawm kev tshawb xyuas cov pa oxygen thiab cov roj toxic?
Teb: electrochemicalical sensors, tseem hu ua cov roj txheem tam sim no, tau nruab nrog electrolytes thiab qhov zoo thiab tsis zoo hluav taws xob sab hauv lub sensor. Thaum cov roj uas muaj cov roj nkag rau hauv, nws yuav nqus tau los ntawm cov yeeb yaj kiab nyias, ua rau oxidation lossis txo cov kev cuam tshuam sab hauv. Cov kev hloov pauv tam sim no, thiab cov roj concentration tuaj yeem txiav txim siab los ntawm ntsuas ntsuas qhov tam sim no.
XIM: Qee lub sensors yuav tsum muaj kev cuam tshuam rau hluav taws xob ntawm cov electrodes, thiab feem ntau muaj cov pa roj oxygen kom muaj kev ua haujlwm ib txwm muaj. Cov av noo thiab lub caij ntuj qhuav tuaj yeem cuam tshuam kev pabcuam lub neej ntawm sensor, thiab instantaneous hloov pauv yuav ua rau lub tswb cuav.
4. Dab tsi yog lub hauv paus ntsiab lus ntawm kev tshawb xyuas greams gases?
Teb: cov roj txuas nrog me me (methane, LPG, arehod, acetylene) tuaj yeem kuaj pom raws li lub hauv paus ntsiab lus ntawm kev sib xyaw ua ke ntawm catalytic.
Catalytic cov kev sib txuas cov sensors yog cov siab - kub sensors. Kev tshawb nrhiav lub ntsiab ntawm cov catalytic tiv thaiv yog tsim los ntawm kev qhwv aluminium coil (φ 0.025) los tswj hwm cov pa hluav taws xob (300 ~ 400 degree) ntawm kev kuaj pom.
Txij ntawm no, yog hais tias nyob rau hauv kev sib cuag nrog methane roj, methans yuav hlawv ntawm cov txheej txheem catalystion, thiab cov tshuaj tiv thaiv ntawm methane adsorbed nyob rau saum npoo ntawm cov pa tawm thiab adsorbed oxygen ions.
Saib xyuas: Yuav tsum muaj cov pa oxygen txaus hauv qhov chaw kuaj pom. Nyob rau hauv ib qho pa oxygen dawb ib puag ncig, txoj kev kuaj pom no tsis tuaj yeem kuaj pom cov pa roj av.
