Mu dziko la kutenthamuyeso wa mphamvu, zoyezera kutentha zamagetsi ndi zoyezera kutentha zamagetsi zimaonekera ngati zipangizo ziwiri zodziwika bwino komanso zapamwamba kwambiri paukadaulo. Ngakhale kuti cholinga chawo chofanana ndi kuyeza molondola momwe kutentha kumagwiritsidwira ntchito, zimasonyeza kusiyana kwakukulu pa mfundo zawo zogwirira ntchito, makhalidwe a ntchito, ndi zochitika zogwiritsira ntchito. Kumvetsetsa kusiyana kumeneku ndikofunikira kwambiri posankha njira yoyenera kwambiri yoyezera kutentha pamakina osiyanasiyana otenthetsera ndi kuziziritsa.
1. Mfundo Zogwirira Ntchito
1.1 Ma Electromagnetic Heat Meters
Ma electromagnetic heat meter amagwira ntchito motsatira lamulo la Faraday la electromagnetic induction. Mkati mwa meter, muli mphamvu ya maginito yopangidwa ndi ma coil. Pamene chotenthetsera choyendetsa, monga madzi, chikuyenda kudzera mu chubu choyezera cha meter cholunjika ku mphamvu ya maginito iyi, mphamvu ya electromotive imayambitsidwa. Malinga ndi lamulo la Faraday, kukula kwa mphamvu ya electromotive iyi kumagwirizana mwachindunji ndi liwiro la kuyenda kwa medium ndi mphamvu ya mphamvu ya maginito. Poyesa mphamvu yamagetsi iyi,kuchuluka kwa madziKuchuluka kwa chotenthetsera kungadziwike. Kuphatikiza pa kuyeza kusiyana kwa kutentha pakati pa mapaipi operekera ndi obweza, kuchuluka kwa kutentha komwe kumagwiritsidwa ntchito kumatha kuwerengedwa molondola. Mfundo imeneyi imapangitsa kuti magetsi oyezera kutentha amagetsi akhale ozindikira kwambiri kayendedwe ka madzi oyendetsera magetsi, ndipo amatha kupereka zotsatira zodalirika zoyezera malinga ngati madziwo akusunga mphamvu zamagetsi.
1.2 AkupangaMayeso a Kutentha
Kumbali ina, ma ultrasound heat meters amagwiritsa ntchito mfundo yofalitsa ma ultrasound mu madzi. Amapangidwa ndi ma ultrasound transducers omwe amatulutsa ndikulandira ma ultrasound wave. Pali njira ziwiri zazikulu zoyezera kuyenda: njira yodutsa - nthawi ndi njira ya Doppler. Mu njira yodutsa - nthawi, ma ultrasound wave amatumizidwa mmwamba ndi pansi kudzera mu flow medium. Kusiyana kwa nthawi yofalitsa ma ultrasound wave omwe akuyenda m'njira zakumtunda ndi zakumunsi kumayesedwa. Kusiyana kwa nthawi kumeneku kumagwirizana ndi liwiro la flow medium. Pamene medical ikuyenda, ultrasound wave yomwe ikuyenda pansi imathamanga, pomwe yomwe ikuyenda mmwamba imachepetsedwa. Powerengera kusiyana kwa nthawiyi ndikugwiritsa ntchito njira zoyenera, flow rate ingapezeke. Doppler method, yomwe imagwiritsidwa ntchito makamaka pamadzi okhala ndi tinthu tomwe timayimitsidwa kapena thovu, imayesa frequency shift ya ma ultrasound wave yomwe imawonetsedwa kuchokera ku tinthu tomwe timasuntha kuti tidziweliwiro la kuyendaMofanana ndi zoyezera kutentha zamagetsi, zoyezera kutentha za ultrasonic zimayesanso kusiyana kwa kutentha pakati pa mapaipi operekera ndi obweza kuti ziwerengere momwe kutentha kumagwiritsidwira ntchito.
2. Kulondola kwa Muyeso ndi Kuzindikira
2.1 Ma Electromagnetic Heat Meters
Ma electromagnetic heat meter nthawi zambiri amapereka kulondola kwakukulu komanso kukhazikika, makamaka pamadzi oyera komanso oyendetsera magetsi. Kulondola kwawo sikukhudzidwa kwambiri ndi zinthu monga kukhuthala kwamadzi ndi kuchuluka kwake, bola madziwo akadali oyendetsera magetsi. Amatha kukwaniritsa kulondola kwa ± 0.5% mpaka ± 1% pansi pa magwiridwe antchito abwinobwino. Komabe, ngati madziwo ali ndi zinthu zambiri zosayendetsa magetsi, monga thovu la mpweya kapena tinthu tosayendetsa magetsi, zitha kusokoneza mphamvu ya maginito ndikuchepetsa kulondola kwa muyeso.
2.2 Ma Ultrasonic Heat Meters
Kulondola kwa zoyezera kutentha kwa ultrasonic kumadalira zinthu zosiyanasiyana, kuphatikizapo mtundu wa zoyezera kutentha za ultrasonic, mtundu wa kuyika, ndi makhalidwe a madzi oyezera. Mu nyengo yabwino, ndi madzi oyera komanso kuyika koyenera, zoyezera kutentha za ultrasonic pogwiritsa ntchito njira yoyendera nthawi zimatha kufika pa kulondola kwa pafupifupi ±1% mpaka ±2%. Komabe, kukhalapo kwa zinthu zolimba zopachikidwa, sikelo, kapena thovu la mpweya mumadzimadzi kumatha kusokoneza kufalikira kwa mafunde a ultrasound, zomwe zimapangitsa kuti pakhale zolakwika muyeso. Zoyezera kutentha za ultrasonic za mtundu wa Doppler, zomwe zimakhala zoyenera kwambiri pamadzi odetsedwa, nthawi zambiri zimakhala ndi kulondola kochepa poyerekeza ndi mtundu wa nthawi yoyendera, nthawi zambiri zimakhala pafupifupi ±2% mpaka ±5%.
3. Zochitika Zogwiritsira Ntchito
3.1 Magetsi amagetsiMayeso a Kutentha
Zoyezera kutentha zamaginito ndi zoyenera kugwiritsidwa ntchito pomwe chotenthetsera chili choyera komanso chothandizira, monga m'makina otenthetsera apakati okhala ndi madzi okonzedwa, makina otenthetsera nyumba zamakono, komanso njira zamafakitale zokhala ndi madzi oyendetsera. Sizovomerezeka kugwiritsidwa ntchito ndi madzi osayendetsa kapena madzi okhala ndi zinthu zambiri zosayendetsa, chifukwa izi zingayambitse kulephera kwa muyeso. Kuphatikiza apo, chifukwa cha kapangidwe kake, zoyezera kutentha zamaginito zimafuna kutalika kwina kwa mapaipi owongoka asanayambe komanso atayikidwa kuti zitsimikizire kuti kuyenda kwa madzi kumakhala kokhazikika, zomwe zingachepetse kugwiritsidwa ntchito kwawo m'malo ena okhala ndi malo ochepa.
3.2 Ma Ultrasonic Heat Meters
Ma ultrasound heat meter ndi osinthasintha kwambiri malinga ndi momwe amagwiritsidwira ntchito. Mtundu wa nthawi yoyendera ndi woyenera madzi oyera ndipo nthawi zambiri amagwiritsidwa ntchito m'makina otenthetsera m'nyumba, ma network otenthetsera m'chigawo, ndi makina operekera madzi. Ma ultrasound heat meter amtundu wa Doppler amatha kugwira madzi okhala ndi tinthu tating'onoting'ono kapena thovu, zomwe zimapangitsa kuti agwiritsidwe ntchito m'mafakitale komwe madziwo angakhale ndi zodetsa, monga malo oyeretsera madzi otayira kapena njira zina zopangira ndi madzi odetsedwa. Kuphatikiza apo, ma ultrasound heat meter safuna kutalika kwa mapaipi olunjika monga ma electromagnetic heat meter, zomwe zimapangitsa kuti akhale chisankho chosavuta chokhazikitsa m'malo opapatiza.
4. Kusamalira ndi Kukhalitsa
4.1 Magetsi amagetsiMayeso a Kutentha
Zoyezera kutentha kwa maginito nthawi zambiri zimakhala ndi kapangidwe ka mkati kosavuta popanda ziwalo zosuntha, zomwe zimachepetsa chiopsezo cha kuwonongeka ndi kung'ambika kwa makina. Komabe, chubu choyezera chikhoza kukhudzidwa ndi dzimbiri ndi kukula pakapita nthawi, makamaka pochita ndi madzi okhala ndi zinthu zowononga kapena mchere wambiri. Kuyang'ana ndi kuyeretsa chubu choyezera nthawi zonse ndikofunikira kuti muyeso ukhale wolondola. Kuphatikiza apo, ma coil ndi ma electrode amagetsi amafunika kutetezedwa ku kusokonezedwa ndi magetsi komanso kuwonongeka kwakuthupi.
4.2 AkupangaMayeso a Kutentha
Ma ultrasound heat meter alibe ziwalo zosuntha, zomwe zimapangitsa kuti zikhale zodalirika kwa nthawi yayitali. Chodetsa nkhawa chachikulu pakusamalira ma ultrasound heat meter ndi momwe ma ultrasound heat meter amagwirira ntchito. Pakapita nthawi, ma transducer amatha kuchepa chifukwa cha zinthu monga kusinthasintha kwa kutentha, dzimbiri la mankhwala, kapena kugwedezeka kwa makina. Kuyang'anira ndi kuyang'anira ma transducer nthawi zonse ndikofunikira kuti zitsimikizire kuti muyeso ndi wolondola. Komabe, poyerekeza ndi ma electromagnetic heat meter, ma ultrasound heat meter nthawi zambiri sakhudzidwa kwambiri ndi dzimbiri lamadzimadzi ndi kukula, zomwe zimapangitsa kuti zikhale zolimba kwambiri m'malo ena ovuta amadzimadzi.
Pomaliza, zoyezera kutentha zamagetsi ndi zoyezera kutentha zamagetsi zamagetsi zili ndi ubwino ndi zofooka zawo. Zoyezera kutentha zamagetsi zamagetsi zimakhala bwino kwambiri poyesa madzi oyera, oyenda bwino komanso molondola kwambiri, pomwe zoyezera kutentha zamagetsi zamagetsi zimapereka kusinthasintha kwakukulu pakugwiritsa ntchito ndipo zimatha kusinthasintha malinga ndi mitundu yosiyanasiyana yamadzimadzi. Posankha pakati pa ziwirizi, zinthu monga mtundu wa chotenthetsera, kulondola kofunikira pakuyeza, malo oyika, ndi zofunikira pakukonza ziyenera kuganiziridwa mosamala kuti zitsimikizire kuti kutentha kukugwira ntchito bwino -makina oyezera.
Nthawi yotumizira: Meyi-27-2025