Gulu la mita yoyenda

Gulu lazida zoyendera zitha kugawidwa mu: volumetric flowmeter, velocity flowmeter, chandamale flowmeter, electromagnetic flowmeter, vortex flowmeter, rotameter, masiyanidwe kuthamanga flowmeter, akupanga flowmeter, Mass flow meter, etc.

1. Makina ozungulira

Kuyandama flowmeter, amatchedwanso rotameter, ndi mtundu wa variable dera flowmeter. Mu chubu chowoneka bwino chomwe chimakulira kuchokera pansi mpaka pamwamba, kukula kwa kuyandama kwa gawo lozungulira kumayendetsedwa ndi mphamvu ya hydrodynamic, ndipo kuyandama kumatha kukhala mu kondomu kumatha kukwera ndikugwa momasuka. Imayenda ndikutsika pansi poyenda komanso kuthamanga, ndipo ikatha kusinthanitsa ndi kulemera kwake, imatumizidwa kuyimba kuti iwonetse kuchuluka kwa mayendedwe kudzera pamagetsi. Nthawi zambiri amagawika magalasi ndi ma rotameter azitsulo. Metal rotor flowmeters ndi omwe amagwiritsidwa ntchito kwambiri pamsika. Pazowonera zowononga ndi mapaipi ang'onoang'ono, magalasi amagwiritsidwa ntchito. Chifukwa cha kuchepa kwa galasi, kiyi woyang'anira ndiye makina ozungulira opangidwa ndi miyala yamtengo wapatali monga titaniyamu. . Pali opanga makina ozungulira ozungulira, makamaka Chengde Kroni (pogwiritsa ntchito ukadaulo waku Cologne), Kaifeng Instrument Factory, Chongqing Chuanyi, ndi Changzhou Chengfeng onse amapanga ma rotameter. Chifukwa cholongosoka kwambiri komanso kubwereza kwa ma rotameter, Amagwiritsidwa ntchito kwambiri pozindikira kutuluka kwa mapaipi ang'onoang'ono (≤ 200MM).　　

2. mita yoyenda bwino

Kutulutsa kwakanthawi koyenda kumayesa kuchuluka kwa madzimadzi poyesa kuchuluka kwa metering yomwe imapangidwa pakati pa nyumba ndi ozungulira. Malinga ndi mawonekedwe a ozungulira, maimidwe oyenda bwino amaphatikizira mtundu wamagudumu, mtundu wopapira, mtundu wamagiya elliptical ndi zina zotero. Ma mita osunthika oyenda amadziwika bwino kwambiri, ena mpaka 0,2%; dongosolo losavuta komanso lodalirika; kugwiritsa ntchito kwakukulu; kutentha kwambiri ndi kuthamanga kukana; zinthu otsika unsembe. Amagwiritsidwa ntchito kwambiri poyesa mafuta osakonzeka ndi zinthu zina zamafuta. Komabe, chifukwa choyendetsa magiya, kuchuluka kwa payipi ndiye ngozi yobisika kwambiri. Ndikofunika kukhazikitsa fyuluta patsogolo pa zida, zomwe zimakhala ndi nthawi yochepa yamoyo ndipo nthawi zambiri zimafunikira kukonza. Zida zazikuluzikulu zopangira zoweta ndi izi: Kaifeng Instrument Factory, Anhui Instrument Factory, ndi zina zambiri.

3. Masiyanidwe kuthamanga kuthamanga mita

Masiyanidwe othamanga a flowmeter ndi chida choyezera chokhala ndi mbiri yakalekale yogwiritsira ntchito ndi chidziwitso chathunthu choyesera. Ndi mita yoyenda yomwe imayesa kusinthasintha kwakanthawi komwe kumapangidwa ndimadzimadzi omwe amayenda kudzera pachida chosunthika kuti awonetse kuthamanga. Kapangidwe kake kofunikira kwambiri kamapangidwa ndi chida chosunthira, mapaipi owerengera opanikizika komanso kusiyanasiyana kwamphamvu. Chida chogwiritsidwa ntchito kwambiri pamsika ndi "chida chokhomerera" chomwe chakhala chovomerezeka. Mwachitsanzo, orifice wokhazikika, mphuno, mphuno ya venturi, chubu ya venturi. Tsopano chida cholumikizira, makamaka kuyeza kwa mphutsi, chikupita kulumikizidwe, ndipo kulipira kwakanthawi kotsimikizika kopitilira muyeso ndikuphatikizira kutentha kumalumikizidwa ndi mphuno, yomwe imathandizira kwambiri kulondola. Ukadaulo wa pitot chubu ukhoza kugwiritsidwa ntchito poyerekeza chida chobowolera pa intaneti. Masiku ano, zida zina zosasunthika zimagwiritsidwanso ntchito poyesa mafakitale, monga mbale ziwiri zazitsulo, ma mbale ozungulira, ma annular orifice mbale, ndi zina zotero. Mamita awa amafunikira kuyerekezera kwenikweni. Kapangidwe kazipangizo zoyeserera ndizosavuta, koma chifukwa chofunikira kwambiri kulolerana, mawonekedwe ndi kulolerana kwamaimidwe, ukadaulo wakukonzanso ndi wovuta. Kutenga mbale yokhazikika ya orifice monga gawo, ndi gawo lopanda utoto wowoneka ngati mbale, yomwe imakonda kusokonekera pokonza, ndipo mbale zazikulu za orifice zimasokonekeranso pakagwiritsidwe, zomwe zimakhudza kulondola. Phokoso lapanikizika la chipangizocho sichimakhala chachikulu kwambiri, ndipo limapunduka mukamagwiritsa ntchito, zomwe zingakhudze kulondola kwa muyeso. Chipinda chokhazikika chazomwe chimatha chimatha kukonza mayendedwe okhudzana ndi muyeso (monga ma angles ovuta) chifukwa cha kukangana kwamadzimadzi omwe amatsutsana nawo mukamagwiritsa ntchito, zomwe zimachepetsa kuyeza kwake.

Ngakhale kukula kwa masiyanidwe amadzimadzi othamanga ndikumayambiriro, ndikukula kosalekeza ndikukula kwamitundu ina yamagetsi, ndikupitilizabe kupitiliza kuyeza kwamayeso pachitukuko cha mafakitale, momwe mayendedwe amtundu wamagetsi amayeserera pang'ono Amalowetsedwa m'malo otsogola, olondola kwambiri komanso oyenda bwino.

4. flowmeter yamagetsi

Kutulutsa kwamagetsi kwamagetsi kumapangidwa kutengera mtundu wamagetsi wamagetsi wama Faraday kuti athe kuyeza kuchuluka kwa madzi amadzimadzi. Malinga ndi lamulo la Faraday lakulowetsa pamagetsi, kondakitala akadula maginito pamagetsi, mphamvu zoyendetsera zimapangidwa ndi wochititsa. Kukula kwa mphamvu yamagetsi yamagetsi kumafanana ndi kwa wochititsa. M'maginito, kuthamanga kwa kayendedwe kake kofanana ndi maginito ndikofanana, kenako kutengera kukula kwa chitoliro ndi kusiyana kwa sing'anga, imasandulika kuti iziyenda.

Ma flowmeter a ma elekitiroma ndi mfundo zosankhidwa: 1) Madzi oti ayesedwe amayenera kukhala amadzimadzi oyenda kapena slurry; 2) Makulidwe ndi mawonekedwe, makamaka mtundu wabwinobwino umaposa theka lathunthu, ndipo kuthamanga kwake kuli pakati pa 2-4 mita; 3). Kupanikizika koyenera kuyenera kukhala kocheperako kukakamizidwa kwa flowmeter; 4). Zipangizo zosiyanasiyana zolowera ndi ma elekitirodi ziyenera kugwiritsidwa ntchito kutentha kosiyanasiyana komanso zowononga.

Kulondola kwa muyeso wamagetsi wamagetsi kumatengera momwe madzi amadzazira chitoliro, ndipo vuto loyesa mpweya mu chitoliro silinathetsedwe bwino.

Ubwino wamagetsi oyendera magetsi pamagetsi: Palibe gawo lopindika, chifukwa chake kuthamanga kwakanthawi ndikuchepa, komanso kugwiritsa ntchito mphamvu kumachepa. Zimangogwirizana ndi kuthamanga kwakanthawi kwamadzimadzi omwe amayeza, ndipo muyeso wake ndiyotakata; media zina zitha kuyerekezedwa pokhapokha kutsekedwa kwamadzi, popanda kuwongolera, koyenera kwambiri kugwiritsidwa ntchito ngati chida chokhazikitsira madzi. Chifukwa cha kusintha kopitilira muyeso kwaukadaulo ndi zinthu zakapangidwe, kupitilirabe kwa kukhazikika, kulumikizana, kulondola ndi moyo, ndikukula kopitilira muyeso wa mapaipi, kuyeza kwa magawo awiri olimba amadzimadzi amatenga maelekitirodi osinthika ndi ma elekitirodi kuti athetse vuto. Kuthamanga kwakukulu (32MPA), kukana kwazitsulo (anti-acid ndi alkali lining) zovuta zoyesa, komanso kuwonjezeka kopitilira muyeso (mpaka 3200MM caliber), kuwonjezeka kopitilira moyo (kwakukulu kuposa zaka 10), magetsi amagetsi ma flowmeters akuyamba kugwiritsidwa ntchito kwambiri, mtengo wake wachepetsedwanso, koma mtengo wonse, makamaka mtengo wamapaipi akulu, udali wokwera, chifukwa chake uli ndi malo ofunikira pogula mita yolowera.

5. Akupanga flowmeter

Akupanga flowmeter ndi mtundu watsopano wazida zoyesera zomwe zapangidwa masiku ano. Malingana ngati madzi omwe amatha kutumiza mawu amatha kuyeza ndi akupanga flowmeter; akupanga flowmeter amatha kuyeza kutuluka kwa madzi otulutsa mamasukidwe akayendedwe, madzi osagundika kapena gasi, ndi muyeso wake Mlingo wa kuyenda kwake ndi: kufalikira kwa kuthamanga kwa mafunde akupanga mumadzimadzi kumasiyana ndi kuchuluka kwa madzi omwe akuyesedwa. Pakadali pano, ma -metmeters opangidwa mwaluso kwambiri akadali dziko la zopangidwa zakunja, monga Fuji yaku Japan, Kanglechuang waku United States; zoweta opanga akupanga flowmeters makamaka monga: Tangshan Meilun, Dalian Xianchao, Wuhan Tailong ndi zina zotero.

Akupanga flowmeters nthawi zambiri sagwiritsidwa ntchito ngati zida zokhazikika, ndipo zopangidwazo sizingayimitsidwe kuti zisinthidwe pomwe tsamba lazowonongeka lawonongeka, ndipo limagwiritsidwa ntchito nthawi zambiri pomwe magawo oyeserera amafunikira kutsogolera kupanga. Phindu lalikulu kwambiri la akupanga ma flowmeters ndikuti amagwiritsidwa ntchito pazakuyenda kwakukulu (mapaipi akulu kuposa 2 mita). Ngakhale ma metering ena atagwiritsidwa ntchito pokonza nyumba, kugwiritsa ntchito njira zopangira zotsogola kwambiri zimatha kupulumutsa ndalama ndikuchepetsa kukonza.

6. Misa otaya mita

Pambuyo pazaka zambiri zakafukufuku, chubu lozungulira ngati U lozungulira flowmeter lidayambitsidwa koyamba ndi kampani yaku America MICRO-MOTION mu 1977. flowmeter iyi itatuluka, idawonetsa kulimba kwake. Ubwino wake ndikuti mayendedwe a misa amatha kupezeka mwachindunji, ndipo samakhudzidwa ndimphamvu ya Parameter, kulondola ndi ± 0.4% yamtengo woyesedwa, ndipo ena amatha kufikira 0.2%. Imatha kuyeza mitundu ingapo yamagesi, zakumwa ndi ma slurries. Ndioyenera makamaka kuyeza gasi wamafuta wamafuta ndi mafuta achilengedwe omwe ali ndi malonda ogulitsa bwino, akuwonjezera Kutulutsa kwamagetsi kwamagetsi sikokwanira; chifukwa sichikhudzidwa ndimagawo othamanga othamanga kumtunda kwakumtunda, palibe chifukwa chogawira zigawo zapayipi molunjika kutsogolo ndi kumbuyo kwa flowmeter. Chosavuta ndichakuti flowmeter yamafuta imakhala yolondola kwambiri ndipo imakhala ndi maziko olimba, motero ndiokwera mtengo; chifukwa imakhudzidwa mosavuta ndi kugwedezeka kwakunja ndipo kulondola kumachepa, samalani kusankha komwe kuli malo ndi njira.

7. Vortex flowmeter

Vortex flowmeter, yomwe imadziwikanso kuti vortex flowmeter, ndi chinthu chomwe chidangotuluka kumapeto kwa ma 1970. Zakhala zotchuka kuyambira pomwe zidayikidwa pamsika ndipo zakhala zikugwiritsidwa ntchito kwambiri kuyeza madzi, mpweya, nthunzi ndi zina zambiri. Vortex flowmeter ndi velocity flowmeter. Chizindikiro chotulutsa chiwonetsero chazomwe zimachitika pafupipafupi kapena chizindikiritso chamakono chofananira ndi kuchuluka kwa mayendedwe, ndipo sichikhudzidwa ndi kutentha kwamadzimadzi, kupsinjika, mamasukidwe akayendedwe ndi kachulukidwe. Kapangidwe kake ndi kophweka, palibe magawo osunthira, ndipo chowunikira sichikhudza madzi kuti ayesedwe. Iwo ali ndi makhalidwe a molondola mkulu ndi moyo wautali utumiki. Chosavuta ndichakuti gawo lina lolunjika limafunikira pakukhazikitsa, ndipo mtundu wamba ulibe yankho labwino pakanjenjemera komanso kutentha kwambiri. Msewu wa vortex uli ndi mitundu yama piezoelectric komanso yama capacitive. Otsatirawa ali ndiubwino pakukaniza kutentha komanso kukana kugwedera, koma ndiokwera mtengo kwambiri ndipo amagwiritsidwa ntchito poyesa nthunzi yotentha kwambiri.

8. chandamale otaya mita

Kuyeza mfundo: Pakatikati pakayendedwe kazitsulo koyesa, kusiyana kwa kuthamanga pakati pa mphamvu zake zakuthambo ndi cholumikizira kumayambitsa kusunthika pang'ono kwa cholumikizira, ndipo mphamvu yomwe ikutsatirayo ndiyofanana ndi kutaya kwake. Ikhoza kuyeza kutuluka kocheperako, kuthamanga kwapakatikati (0 -0.08M / S), ndipo kulondola kumatha kufikira 0.2%.