Kodi ubwino ndi kuipa kwa ma ultrasound flow meter ndi kotani?

Ma flow meters a ultrasonic amapereka ubwino ndi zofooka zosiyanasiyana, zomwe zimapangitsa kuti zikhale zoyenera kugwiritsidwa ntchito pazifukwa zina koma zimafuna kuganizira zina. Pansipa pali kusanthula mwatsatanetsatane kwa zabwino ndi zoyipa zake:

Ubwino wa Ma Ultrasonic Flow Meters

1. Kuyeza Kosasokoneza

Palibe Kusintha kwa Paipi:

Imayikidwa kunja kwa khoma la payipi, kupewa kusokoneza kayendedwe ka madzi. Izi zimachotsa kutayika kwa mphamvu, zoopsa zotsekeka, kapena kuwonongeka kwa mita chifukwa cha madzi owononga/osagwira ntchito.

Kukhazikitsa Kosavuta:

Amachepetsa ndalama zoyikira ndi kukonza, makamaka mapaipi akuluakulu omwe mita yachikhalidwe imakhala yokwera mtengo.

2. Kugwiritsa Ntchito Kwambiri

Madzi Osiyanasiyana: Oyenera madzi oyera, zimbudzi, matope, mpweya, ndi zinthu zowononga (bola ngati madziwo amatulutsa mafunde a ultrasound).

Kuyenerera kwa Kukula Kwakukulu:

Ndi yotsika mtengo makamaka pa mapaipi opitirira 300 mm, pomwe zoyezera madzi zina (monga ma orifice plates) zimakhala zosagwira ntchito.

3. Kulondola Kwambiri ndi Kulondola Kwambiri

Kulondola:

Ikhoza kufika ±0.5% mpaka ±1% m'malo abwino (monga kuyenda kokhazikika, madzi oyera), ofanana ndi makina oyezera magetsi apamwamba.

Chiŵerengero Chochepa cha Kutembenuka:

Miyeso imayenda kuchokera pa liwiro lotsika mpaka lalikulu popanda zolakwika zazikulu.

4. Kutha Kuyeza Mosiyanasiyana

Kuyenda kwa Mayendedwe Awiri: Kuyeza kuyenda kwa madzi mbali zonse ziwiri, kothandiza pa ntchito monga maukonde ogawa madzi kapena njira zamakemikolo.

Kudalira Kupanikizika/Kukhuthala:

Kupanikizika kwa madzi kapena kukhuthala kwa madzi sikukhudzidwa kwambiri poyerekeza ndi makina oyezera (monga, makina oyezera ma turbine).

5. Zinthu Za digito ndi Zanzeru

Kukonza Zizindikiro Zapamwamba:

Amagwiritsa ntchito ukadaulo wa digito (monga DSP) kusefa phokoso ndikuwonjezera kukhazikika kwa muyeso.

Kuphatikiza Deta: Kumalumikizana mosavuta ndi ma PLC kapena machitidwe a SCADA kuti aziwunika patali ndikulemba deta.

Zoyipa za Ma Ultrasonic Flow Meters

1. Kukhudzidwa ndi Madzi ndi Mapaipi

Kugwedezeka/Mababu/Tinthu Tating'onoting'ono:

Kugwedezeka kwambiri, thovu la mpweya, kapena tinthu tolimba (monga m'madzi otayira) zimatha kufalitsa zizindikiro za ultrasound, kuchepetsa kulondola kapena kupangitsa kuti muyeso ulephereke.

Zofunikira pa Paipi:

Imafunika magawo ataliatali owongoka (nthawi zambiri mapaipi 10-20 m'mimba mwake pamwamba ndi 5 pansi pake) kuti iwonetsetse kuti ikuyenda bwino, zomwe zingakhale zovuta m'malo ocheperako.

2. Kutentha ndi Kapangidwe ka Acoustic

Kudalira Kutentha:

Liwiro la mafunde a ultrasound limasiyana malinga ndi kutentha kwa madzi (monga, ± 0.5%/°C pa madzi), zomwe zimafuna kulipidwa kutentha kuti zitsimikizire kulondola kwakukulu.

Kuchepetsa mphamvu ya mawu:

Madzi okhala ndi mphamvu yoyamwa kwambiri (monga madzi okhuthala kapena omwe ali ndi zinthu zolimba kwambiri) amatha kufooketsa zizindikiro, zomwe zimalepheretsa kuchuluka kwa muyeso.

3. Kuyika ndi Kukonza Zovuta

Kulinganiza Molondola:

Ma transducer ayenera kuyikidwa bwino (monga ngodya yoyenera ndi mtunda woyenera) kuti mafunde a ultrasound adutse bwino mumadzimadzi. Kusakhazikika bwino kumayambitsa zolakwika muyeso.

Mavuto Okhudza Kulinganiza:

Kuyesa malo ogwirira ntchito n'kovuta chifukwa chodalira momwe mapaipi alili; kuyesa kwa fakitale sikungafotokoze mokwanira za zinthu zomwe zili pamalopo.

4. Mtengo ndi Ukatswiri wa Ukadaulo

Mtengo Woyamba Wokwera:

Zokwera mtengo kuposa zoyezera makina wamba (monga zoyezera mawilo a paddlewheel) pa mapaipi ang'onoang'ono.

Kufunika kwa Luso la Ukadaulo: Kukhazikitsa ndi kuthetsa mavuto kumafuna ukatswiri mu ukadaulo wa ultrasonic ndi mphamvu zamadzimadzi.

5. Zolepheretsa pa Zochitika Zinazake

Liwiro Lotsika la Kuyenda:

Amavutika ndi kuchuluka kwa madzi otsika kwambiri (monga <0.1 m/s) chifukwa cha kusiyana kochepa kwa nthawi pakati pa zizindikiro zakumtunda/zotsika.

Kutentha/Kupanikizika Kwambiri:

Zochepa chifukwa cha zinthu zosinthira kutentha; siziyenera kutentha kwambiri (monga >200°C) kapena kupsinjika popanda mapangidwe apadera.

Ma ultrasound flow meters ndi abwino kwambiri pakugwiritsa ntchito ma ultrasound omwe amafunikira kuyeza kolondola kwambiri kwa madzi akuluakulu kapena ovuta (monga kuyeretsa madzi, gasi wachilengedwe). Komabe, amafunika kuganizira bwino momwe mapaipi alili, mawonekedwe a madzi, ndi luso loyika. Pa malo omwe madzi samayenda bwino, okhala ndi zinthu zolimba kwambiri, kapena malo okhazikika, ma electromagnetic kapena vortex meters angakhale oyenera kwambiri.