Kubutterfly valvejuyike i ngom mi Amerika i oro 1930. Jukelo i Japan i oro 1950 man jubed jutiyo kudu ungo i Japan nitundo i oro 1960. Ebedo ngo piny ma dhanu zo maru in ngom para nitundu i oro 1970. Lembe madongo pa butterfly valves utiye: kero ma nok mi tic, kabedo ma nok mi ketho man pek ma yot. Ka wakwanu DN1000 calu lanyuth,butterfly valveutiye 2T, mavalve mi dhugolautiye 3.5T. Kubutterfly valveyot ni ketho karacelu ku jam tic matung tung man etiye ku kero man gen. Peko pa butterfly valves ma jukubo ku rubber utiye nia ka jutiyo kudu pi throttling, cavitation copo timere pi tic marac, ma weko rubber seat copo wok man unyothere. Pieno, kite mi yero maber ucungo iwi kite ma tic utiye kudu. Bede pa yabo pa butterfly valve ku rwom pa pii utiye linear. Ka jutiyo kudu pi jwigo kadhiri pa pii, kite ma pii mol kudu de rwate ku kero pa mol pa pii. Ku lapor, ka valve caliber man form pa pipelines ario zoo gi rom, ento pipeline loss coefficient utiye tung tung, flow rate pa valve de bibedo tung tung. Ka valve utiye i rwom ma malu mi throttling amplitude, cavitation copo timere in ngeye pa valve plate, ma copo nyayu peko i valve. Pol kare jutiyo kudu woko pa 15°. Kinde mabutterfly valveutiye i kind dhugola, dhugola ma juyiko ku kum valve man thenge ma kore pa butterfly plate utiye ikind valve shaft, man lembe matung tung juyubu ku thenge ario zoo. I ngeye pa butterfly plate yo acel wotho yo ma pii mol kudu, man yo mange wotho yo ma pii mol kudu. Pieno, kum valve man valve plate yo acel gi ketho dhugola ma calu nozzle, man yo mange utiye calu dhugola ma calu vur mi throttle. Thenge pa nozzle utiye ku rwom ma malu uloyu pa throttle, man pressure marac biwok piny pa valve i thenge pa throttle, man rubber seal bipodho piny. Tego pa tic pabutterfly valvelokore ni kum kabedo matung tung ma oyabere man yore ma oyabere man cego pa valve. Teko ma wok kud i tung tung mi wi pii ma malu ku ma piny pa valve mi butterfly ma ucungo, asaga valve ma diameter pare dit, pi thum pa pii, jucopo weko ngo. Mi medo, ka juketho elbow i thenge mi donjo pa valve, bias flow bedo nuti, man torque bi medere. Ka valve utiye i kind dhugola, yore mi tic ucikere ni bedo ma ucungo kende pi tic pa torque mi mol pa pii.
China utiye ku dul madwong mi tic ku valve, ento epe ku tego pa valve. Ka waweco lemandha, ngom para umondo i rwom pa ngom ma tek pa valve, ento i yore mi ber pa piny, ngom para podi utiye bor ku bedo ku valve power. Tic eni podi utiye ku rwom ma piny mi yubu piny, kero ma nok mi R&D pa valves ma rwate ku piny mabecu, man rwom ma piny mi yubu piny i tic mi valve, man wel piny ma jucwalo kud i ngom mange man ma jucwalo woko umediri ka medere. Etie ngo nia kampuni madwong mi valve copo kwo i soko. Ento, ngwec ma tek eni i tic mi valve bi kelo gum madit, man adwogi pa ngwec eni bi miyo tic mi soko bedo maber. Yo mi nwangu valve ma malu utiye "bumpy" mandha. Jam piny ma pigi tek udoko piny ma nyayu peko i dongo pa tic mi yubu piny i ngom para ni piny ma malu. I kind 12th Five-Year Plan, gavumente bimediri ku medo rwom pa jam tic ma pigi tek. Kae wabe yero lembe madongo mapol i "yub mi timo" man tic mi valve pi nyang ikum ka nyo piny ma jucwalo kud i ngom mange copo bedu maber. Kud i lembe ma jutimo, jucopo neno nia bedo pa loko valve ma jucwalo kud i ngom mange i sub-industries matung tung tung tung, man valves ma malu mitu kony pa cik man kony pa lembe mi ngec.
Tic mi valve timo tic ma pire tek calu dul ma pire tek i tic mi yubu jam tic i dongo pa lim pa ngom. Calu rwom pa tic mi yubu valve mi ngom para podi utiye bor ku rwom ma malu mi ng'om zoo, lembe madwong ma pire tekvalvesku lembe ma malu, lyethu ma malu man pressure ma malu, man pound ma malu ubedu ka geno piny ma jucwalo kudi ngom mawoko. Ku lapor, nying OMAL mi Europe ubedo piny ma pire tek ikind ju ma timo tic ku valve. Pi ni ketho valves i kabedo migi, i ngei ma State Council umiyu "Lembe mapol ikum dwoko rwom pa tic mi yubu jam tic", dipatment mi adhura gitimo tic madongo mapol nimakere ku yeny pa gavumente pi ketho jam tic madongo i kabedo migi. Ku telowic pa National Development and Reform Commission, China Machinery Industry Federation man China General Machinery Industry Association gi ketho man gi kethovalveyub mi poko piny pi jam tic madongo i kabedo ma rwate, man gi timo tic karacelu ku dipatment ma rwate wang mapol. Kawoni kabedo pa valves ubedo lembe ma jumoko ung'olo ikind ju ma timo tic mi valve. Ti ku cik mi ng'om zoo pi yiku piny; gamo wil maber pa ngom mawoko (ma ikind gi utiye diro ma juyiko); temo piny man neno tic pa piny jutimo nimakere ku cik mi ng'om zoo; gamo ngec mi tic mi yubu piny woko kud i ngom mawoko man iketh lembe ma pire tek i kum sayu lembe man ketho piny manyen; nyuthu lembe ma pire tek man kite ma tic pa piny ma jucwalo kud i ngom mawoko ma rwom pare malu, man mange. utiye yore mi medo rwom pa tic pa valve, medo rwom pa tic pa valve, man timo tic pa valve. Ku rwom ma malu mi dwoko piny i tic mi valve, tic mi anyim bibedo pyem ikind ber pa piny ma jutiyo kudu pi valve man bedo maber pa piny ma jutiyo kudu. Piny ma juyubu bi dongo i yore mi ryeko ma malu, lembe ma malu, kero ma tek mi juku nyoth, man kwo ma lac. Kende kende ni kadhu kud i lembe manyen mi ryeko, dongo pa piny manyen, man aloka loka mi ryeko, rwom pa ryeko mi jam tic copo bedu maber moth moth ni rombu ku jam tic mi pacu man ni nwangu kabedo pa valves. I thenge mi yeny madit, tic mi yubu valve mi ngom para bi nyuthu dongo maber.
Saa mi cwalo: Nov-02-2024
