Dab tsi yog cov teeb meem tshwm sim thiab kev siv tsis raug ntawm cov khoom siv roj
Lub ntsiab lus ntawm kev siv lub tshuab ntsuas roj tau nyiam txhua tus neeg lub siab rau qee yam. Niaj hnub no, peb tau sau thiab sau cov ntsiab lus ntawm qee cov lus nug uas nquag nug thiab qee qhov kev xav tsis zoo txog lawv txoj kev siv. Tam sim no, peb tau sau cov lus teb rau cov lus nug no raws li hauv qab no:
1. Dab tsi yog cov pa roj (kua) phom sij hauv kev tua hluav taws thiab cawm ib puag ncig?
Teb: (1) Kev phom sij ntawm oxygen:
Thaum cov pa oxygen concentration ntau dua 23 feem pua, qee cov khoom tuaj yeem ua rau combustion, uas hnyav heev. Kev sib ntaus sib tua kuj tseem tuaj yeem hlawv hauv huab cua nrog cov ntsiab lus oxygen siab thiab tsis muaj kev tiv thaiv. Thaum nws tshaj 70 feem pua, nws tuaj yeem ua rau tib neeg lub cev raug mob thiab ua rau "oxygen" lom;
Thaum cov pa oxygen concentration qis dua 12 feem pua, tib neeg txoj kev txiav txim yuav ploj mus, ua pa nyuaj, thiab cov tsos mob ntawm daim di ncauj ntshav yuav tshwm sim. Thaum nws qis dua 10 feem pua, ntuav, txav tsis tau, tsis nco qab, thiab txawm tias tuag yuav tshwm sim.
(2) Kev phom sij ntawm cov pa phem (kua kua):
Gases, vapors, pa luam yeeb (xws li hydrogen sulfide, sulfur dioxide, carbon monoxide, chlorine, ammonia, organic gases).
(3) Kev puas tsuaj ntawm cov nplaim taws lossis cov pa tawg:
High concentrations ntawm roj, chav, los yog hmoov av yuav ua rau combustion los yog tawg.
2. Dab tsi yog cov cuab yeej ntsuas roj uas tuaj yeem faib raws li lawv cov qauv kev ua haujlwm?
Teb: Mloog: Ultrasound thiab infrared acoustics;
Saib ntawm: chav kawm duab;
Cov ntxhiab tsw: Catalytic combustion, electrochemistry, IR/Caser, PID.
3. Lub hauv paus ntsiab lus ntawm kev soj ntsuam cov pa oxygen thiab cov pa phem yog dab tsi?
Teb: Electrochemical sensors, tseem hu ua gas sensors tam sim no, yog nruab nrog electrolyte thiab zoo thiab tsis zoo electrodes hauv lub sensor. Thaum cov roj tshwj xeeb nkag mus, nws yuav raug nqus los ntawm cov yeeb yaj kiab nyias, thiab oxidation lossis txo cov tshuaj tiv thaiv yuav tshwm sim hauv. Cov kev hloov tam sim no, thiab cov roj concentration tuaj yeem txiav txim siab los ntawm kev ntsuas qhov tam sim no.
Ceeb Toom: Qee cov sensors yuav tsum muaj qhov tsis zoo ntawm qhov hluav taws xob ntawm cov electrodes, thiab cov pa roj carbon monoxide feem ntau xav tau cov pa me me kom tswj tau qhov ua haujlwm zoo. Cov av noo siab thiab drought siab tuaj yeem cuam tshuam rau lub neej ntawm lub sensor, thiab kev hloov siab sai sai yuav ua rau lub tswb tsis tseeb.
4. Dab tsi yog lub hauv paus ntsiab lus ntawm kev tshawb nrhiav cov pa roj carbon monoxide?
Teb: Cov pa roj carbon monoxide (methane, LPG, propane, hydrogen, acetylene) tuaj yeem kuaj tau raws li lub hauv paus ntsiab lus ntawm catalytic combustion.
Catalytic combustion sensors belongs rau high-temperature sensors, thiab nrhiav kom tau lub ntsiab ntawm lub catalytic caij nyob rau hauv ib tug platinum hlau kauj ( φ 0 0} 25 ~ φ 0.05) qhwv nrog txhuas oxide thiab nplaum rau tsim cov duab kheej kheej, thiab siv tam sim no rau cov hlau platinum kom cov khoom kuaj pom ntawm qhov kub siab (300-400 degree ).
Nyob rau lub sijhawm no, yog tias nws nkag mus rau hauv kev sib cuag nrog cov roj hluav taws xob xws li methane, methane yuav hlawv ntawm cov txheej txheem catalyst, thiab cov ntsiab lus ntawm combustion yog cov tshuaj tiv thaiv ntawm cov adsorbed methane rau saum npoo ntawm cov khoom thiab cov adsorbed oxygen ions.
Ceeb Toom: Yuav tsum muaj cov pa oxygen txaus hauv qhov chaw kuaj pom. Nyob rau hauv ib puag ncig tsis muaj oxygen, txoj kev tshawb nrhiav no tsis tuaj yeem ntes tau cov pa hluav taws xob.
