Masiku ano, zonse zathu Transit-Time akupanga otaya mitaamagwiritsidwa ntchito poyezera kuyenda kwamadzimadzi ndipo chitoliro choyezera chiyenera kukhala chitoliro chonse chamadzi.Transit time fluid flow mita nthawi zambiri amagwiritsidwa ntchito m'mafakitale operekera madzi, kugwiritsa ntchito kwa HVAC, fakitale yamankhwala, fakitale yazakudya, mafakitale a zakumwa, mafakitale azitsulo ndi ena.Wathu Transit-Time akupanga flowmeter akhoza kugawidwa mu umodzi njira akupanga otaya mita, wapawiri-njira akupanga otaya mita, Mipikisano njira akupanga otaya mita.
Single njira akupanga otaya mitayokhala ndi chotchinga chimodzi kapena choyikapo masensa
Iwiri njira akupanga otaya mitandi mapeyala awiri a clamp pa kapena kuyika mtundu wa masensa
Mipikisano njira kuyika akupanga otaya mita ndi 4 mawiri awiri a kuyika masensa
Ndioyenera kuyeza zamadzimadzi zoyera, zamadzimadzi zomwe zili ndi zolimba zochepa,kulondola kumatha kufika 1%, kulondola kwapawiri njira akupanga flowmeter kungakhale mpaka 0,5%.
M'makampani opanga mankhwala, mankhwala amadzi, mafuta a petroleum ndi mafakitale ena adzagwiritsa ntchito flowmeters kuyeza zakumwa zosiyanasiyana, monga zakumwa zamadzimadzi, madzi apampopi, madzi a mafakitale, madzi onyansa apanyumba ndi zina zotero.Ndipo muzamankhwala, chakudya ndi mafakitale ena, nthawi zambiri amakhala ndi miyezo yolimba mumtundu wamadzi pakuyezera koyenda , amafunikira kuyeza kutuluka kwa madzi oyera kapena madzi oyera kwambiri, ma conductivity amadzi oyera amakhala ochepa.
N'chifukwa achepetsa pa mtundu podutsa nthawi akupanga flowmeter ndi yabwino yothetsera kuyeza koyera madzi ?
Ndiroleni nditengere mitundu ina yodziwika bwino yoyezera mita ngati kufananiza.
1. Electromagnetic flowmeter
Magetsi oyendera magetsi amachokera ku lamulo la Faraday la electromagnetic induction.Amagwiritsidwa ntchito kuyeza kuchuluka kwa madzi opangira madzi okhala ndi ma conductivity akulu kuposa 5μS/cm.Ndi mita yoyezera kuchuluka kwa ma conductive sing'anga.
Meta imeneyi angagwiritsidwe ntchito kuyeza voliyumu otaya amphamvu zikuwononga zamadzimadzi monga asidi wamphamvu ndi amphamvu m'munsi ndi homogeneous madzi-olimba awiri gawo inaimitsidwa madzi monga matope, zamkati ndi pepala zamkati.Popeza madutsidwe a madzi oyera ndi 0,055 μS/cm okha, otsika kwambiri kuposa 5μS/cm, n'zoonekeratu kuti maginito flowmeters si oyenera muyeso wa madzimadzi.
2. Turbine flowmeter
Mamita otaya ma turbine amagwiritsa ntchito mphamvu yamakina amadzimadzi kuti azungulire rotor mkati mwa mtsinje.Liwiro lozungulira limagwirizana mwachindunji ndi liwiro lamadzimadzi omwe akuyenda pa mita.
Tingaone kuti chopangira makina flowmeter ndi kukhudzana otaya muyeso, ndi madzi oyera ndi zofunika makamaka mkulu zinthu, choncho mfundo yaikulu ayenera kugwiritsidwa ntchito popanga 316L, ntchito ukhondo achepetsa olowa, kupanga mtengo yomweyo kuchuluka kwambiri.
3. Vortex flow mita, Turbine flowmeter, PD otaya mita
Vortex flow mita, omwe nthawi zambiri amatchedwa ma vortex shedding flow metres, amagwiritsa ntchito chotchinga mumtsinje kuti apange ma vortices otsika omwe amapangidwa mosinthana mbali zonse za chotchingacho.Pamene ma vorticewa amachotsedwa chifukwa cha kutsekeka, amapanga madera otsika komanso othamanga kwambiri omwe amazungulira pafupipafupi molingana ndi kuthamanga kwamadzimadzi.Mlingo wothamanga ukhoza kuwerengedwa kuchokera ku liwiro lamadzimadzi.
Ma turbine flow mitaKugwiritsa ntchito ndi zakumwa kumakhala ndi lingaliro losavuta la magwiridwe antchito, ngati madzimadzi amayenda kudzera mu chubu la mita yothamanga amakhudza masamba a turbine.Masamba a turbine pa rotor amapindika kuti asinthe mphamvu kuchokera kumadzi oyenda kukhala mphamvu yozungulira.Tsinde la rotor limazungulira pama bere, pomwe kuthamanga kwamadzimadzi kumawonjezera kuzungulira kwa rotor mwachangu.Kusintha kwa mphindi imodzi kapena RPM ya rotor imayenderana mwachindunji ndi liwiro lothamanga mkati mwa chubu chothamanga ndipo izi zimagwirizana ndi voliyumu pamitundu yambiri.
Positive displacement flow metersgwiritsani ntchito ma giya awiri omwe ali ndi setifiketi kuti muyeze kuchuluka kwamadzimadzi komwe kumadutsa pa mita yothamanga pomwe magiya akuzungulira.Mamita oyendawa adapangidwa kuti athe kuyeza molondola madzi okhuthala monga ma resin, polyurethanes, zomatira, utoto, ndi mitundu yosiyanasiyana yamafuta amafuta.
Ndiwo muyeso wamadzimadzi amtundu wa kukhudzana, motero amalumikizana mwachindunji ndi madzimadzi, omwe amawononga madziwo.
4. Coriolis Misa Flowmeter
Mayendedwe a Coriolis ali ndi chubu yomwe imalimbikitsidwa ndi kugwedezeka kokhazikika.Pamene madzi (gasi kapena madzi) adutsa mu chubu ichi, kuthamanga kwa misa kumapangitsa kusintha kwa chubu kugwedezeka, chubucho chimagwedezeka zomwe zimapangitsa kuti pakhale kusintha.Kusintha kwa gawoli kumatha kuyeza ndi liniya linanena bungwe lochokera molingana ndi kuyenda.
Pamene mfundo ya Coriolis imayesa kuthamanga kwa misa mosadalira zomwe zili mkati mwa chubu, imatha kugwiritsidwa ntchito mwachindunji kumadzi aliwonse omwe amadutsamo - LIQUID kapena GAS - pomwe matenthedwe amafuta othamanga amatengera mawonekedwe amadzimadzi.Kuwonjezera apo, mofanana ndi kusintha kwa gawo pakati pa kulowetsa ndi kutuluka, ndizothekanso kuyeza kusintha kwenikweni kwa ma frequency achilengedwe.Kusintha kumeneku pafupipafupi kumakhala kofanana ndi kuchuluka kwamadzimadzi - ndipo kutulutsa kowonjezera kwazizindikiro kumatha kutengedwa.Popeza kuyeza kuchuluka kwa kuthamanga kwa misa ndi kachulukidwe ndizotheka kupeza kuchuluka kwa voliyumu.
Masiku ano, mita iyi ndi bwino kuyeza 200mm kapena pansi m'mimba mwake chitoliro, sangathe kuyeza lalikulu m'mimba mwake chitoliro;Komanso, ndi yaikulu kulemera kwake ndi kuchuluka kwake, osati yophweka kuigwira.
Pakuyezera koyenda kwamadzi koyera, mutha kusankha mita yoyenda motengera mfundo zotsatirazi.
1) Kusankha mita yoyenda yamadzi yosasokoneza komanso osalumikizana mwachindunji ndi madzi omwe amayezedwa kuti muwonetsetse kuti madziwo sakuipitsidwa;
2) Flowmeter yosankhidwa iyenera kuyeza zamadzimadzi ndi madutsidwe otsika kwambiri.
3) Kuyika ndi kuyeza deta ya mita yothamanga sikudzakhudzidwa ndi kukula kwa chitoliro choyezera.
Kunja achepetsa pa akupanga flowmeter ndi mtundu wa sanali kukhudzana madzi otaya mita, akhoza kuyeza chitoliro kuchokera 20mm kuti 5000mm, lonse m'mimba mwake osiyanasiyana chitoliro, ndipo angagwiritsidwenso ntchito kuyeza zakumwa kuti n'zovuta kukhudza ndi kuonerera.kulondola ndi mkulu, pafupifupi palibe kusokoneza zosiyanasiyana thupi katundu wa sing'anga anayeza, monga amphamvu zikuwononga, sanali conductive, radioactive, flammable ndi kuphulika zamadzimadzi ndi mavuto ena.Choncho, kwa madzi oyera muyeso, ife choyamba amalangiza kunja clamp-pa madzimadzi akupanga flowmeter kuyeza.
Onetsani zochitika zenizeni kuti muwerenge .
Nthawi yotumiza: Oct-26-2022