Kutsata Mayendedwe: Kuthana ndi Vuto la Kuyeza Kuyenda kwa Open-Channel mu Mapulogalamu a Municipal

Chimodzi mwa malo oyezera apadera kwambiri ndi ma ngalande otseguka, pomwe madzi otuluka m'malo aulere amakhala "otseguka" mumlengalenga. Izi zitha kukhala zovuta kuziyeza, koma kuyang'anitsitsa kutalika kwa kayendedwe kake ndi malo a flume kungathandize kulimbikitsa kulondola ndi kutsimikizira.

M'dziko loyezera madzi moyenera komanso molondola, pali zida zingapo zomwe mungasankhe. Malingana ndi momwe zinthu zilili, kutuluka kwa madzi ndi malo omwe kuyeza kwa madzi kumafunika, pali njira yabwino yothetsera madzimadzi. Komabe, amodzi mwa malo oyezera apadera kwambiri ndi a ngalande zotseguka - zomwe zimaphatikizapo ngalande za ulimi wothirira, mitsinje, njira zogwirira ntchito zamadzi, komanso njira zonyansa zamadzi amkuntho - komwe kumayenda kwamadzi pamtunda waulere nthawi zina kumakhala "kotseguka" mumlengalenga.

Kuyeza koyenda bwino kwa njira yotseguka kumatha kukhala kovuta. Njira zotsegula sizimapanikizidwa, choncho zoyezera zapaipi zonse monga Venturi, electromagnetic kapena strap-on transit-time flow meters sizigwira ntchito. Njira yodziwika bwino yoyezera kuyenda panjira yotseguka ndiyo kuyeza kutalika kapena "mutu" wamadzimadzi pamene akudutsa malire (monga chitoliro kapena weir) mumsewu. Kwa njira iliyonse yotseguka yomwe imayenda mwaufulu kudzera mu chinthu china choyang'anira metering, kutalika kwa kuthamanga (mutu) kungakhale chizindikiro cholondola cha kuchuluka kwa kayendedwe kake kamene kamapereka muyeso woyenerera wa kuthamanga.
Ndiye Doppler radar madzi mlingo flowmeter ife tinapanga akhoza kukwaniritsa muyeso wolondola

Mapeto
Kuyeza kolondola kwa mayendedwe otseguka kukukhala kofunika kwambiri. Kutsetsereka kwakukulu, kusungunuka kapena kusintha kwakukulu kwa geometry kumatha, ndipo nthawi zambiri kumapangitsa, kusokoneza kulondola ndi kudalirika kwa chitoliro chachikhalidwe cha Parshall. Chifukwa cha kuchepa kwa madzi a m'mitsinje omwe alipo pamodzi ndi kufunikira kwa metering ndi kuyang'anira kayendedwe ka madzi amadzimadzi ndi madzi ena otsegula amadzimadzi, kulondola kuyenera kuganiziridwa kuti tisankhe njira yabwino. Kuti tipereke zotsatira zodalirika, zotsatirika zimafunikira kuyang'ana kupyola zomwe zimaperekedwa ku m'badwo wotsatira wa mayankho otsimikizika oyezera kuyenda.