Ngokuhambela phambili kwenqanaba letekhnoloji yaseTshayina, iivalvu ezizenzekelayo eziveliswe yiChemChina nazo ziphunyezwe ngokukhawuleza, ezinokugqiba ulawulo oluchanekileyo lokuhamba, uxinzelelo, inqanaba lolwelo kunye nobushushu. Kwinkqubo yokulawula iikhemikhali ngokuzenzekelayo, i-valve elawulayo yeyomsebenzi omkhulu I-actuator, imodeli yayo kunye nomgangatho wesixhobo kunempembelelo enkulu kumgangatho wokulungiswa komgangatho wesekethe yokumisela. Ukuba ukukhethwa kunye nokusetyenziswa kwevalve yokulawula ayifanelekanga, kuya kusongela ubomi benkonzo yevalve elawulayo, kwaye nokuba imeko inzima, iya kubangela ukuba inkqubo ibangele iingxaki zokupaka. . Ngophuhliso lwe-automation ye-industrial, i-valve yokulawula i-pneumatic nayo isetyenziswe ngokubanzi njenge-actuator ebalaseleyo. Olu hlobo lwevalve yokulawula luneempawu zesenzo esithembekileyo kunye nesakhiwo esilula. Inentsingiselo ebaluleke kakhulu yokuqinisekisa ukhuseleko lwenkqubo. Olu lulandelayo Uhlalutyo olunzulu ekukhethweni nasekusetyenzisweni kweevalve zokulawula umoya kwinkqubo yokulawulwa ngokuzenzekelayo kweekhemikhali.
1. Ukukhethwa kwe-valve yokulawula i-pneumatic kwinkqubo yokulawulwa kweekhemikhali ngokuzenzekelayo 1. Ukukhethwa kohlobo lwevalve yokulawula kunye nesakhiwo sisekelwe kumahluko we-stroke yayo. Ivalve yokulawula umoya inokwahlulwa ibe ziindidi ezimbini ezahlukeneyo, ezizezi, istroke ethe tye kunye ne-angular stroke, ngokwesakhiwo Ngokubhekiselele kumanqaku, iivalve zokulawula umoya zinokwahlulwa zibe ziivalve zebhabhathane, iivalve ze-angle, iivalve zemikhono, iivalve zebhola, i-diaphragm valves, kunye iivalvu zesitulo esinye esithe ngqo. Okwangoku, ivalve yokulawula isihlalo esithe ngqo yivalve elawulayo enokuvuza okuncinci kwinkqubo yesicelo. Umsebenzi wokuhamba ulungile kwaye isakhiwo silula. Ingasetyenziswa kwiindawo ezineemfuno eziqatha zokuvuza, kodwa indlela yayo yokuqukuqela ingcolisekile, nayo ithintelwe kumlinganiselo othile. Ukuphucula isikali sokusetyenziswa kwayo. I-valve yokulawula izihlalo eziphindwe kabini ichasene ne-valve yokulawula isihlalo esisodwa esithe ngqo. Akukho mfuneko ingqongqo yokuvuza. Kufanelekile ukusetyenziswa kwiindawo ezinomahluko omkhulu woxinzelelo lokusebenza. Ngoku, ivalve yokulawula isihlalo esithe tye yeyona isetyenziswa kakhulu eTshayina. Uhlobo lwevalve yokulawula. Iivalve zemikhono zinokwahlulwa zibe ziindidi ezimbini, ezizezi, iivalve zemikhono ezitywinwe kabini kunye neevalve ezinemikhono etywiniweyo enye. Iivalve ze-sleeve zinozinzo olubalaseleyo, ingxolo ephantsi, kunye ne-disassembly efanelekileyo kunye nokudibanisa. Nangona kunjalo, iikowuteshini zabo ziphezulu kwaye nezicelo zokulungisa ziphezulu. Ke ngoko, ubungakanani besicelo bukwaxhomekeke kwezinye izithintelo. Indlela yokuhamba yevalve ye-diaphragm ilula, kwaye iphinda ivelise kwaye isebenzise i-PT-FE kunye ne-PFA ene-corrosion resistance resistance, efanelekileyo kakhulu ekusebenziseni i-alkali eqinile okanye i-asidi eqinile, kodwa umsebenzi wokumisela umbi kakhulu. 2. Ukukhethwa kwezixhobo zokulawula i-valve Ukusetyenziswa kweevalvu zokulawula kuneemfuno eziphantse ziqatha zokumelana nokubola, ukulinganiswa koxinzelelo kunye nobushushu. Ke ngoko, iivalvu zolawulo lwangoku zisebenzisa kakhulu izinto zentsimbi, ezinokuthi ziphucule ngokufanelekileyo ukuxhathisa kwe-corrosion yevalve yokulawula. Nokuqina koxinzelelo; izinto zensimbi ezingenasici zisetyenziswa kakhulu kwizinto eziluhlaza zamacandelo angaphakathi kwi-valve yokulawula. Ukuba inkqubo ineemfuno eziphantsi zokuvuza, unokukhetha izitywina ezithambileyo. Ukuba inkqubo ineemfuno eziphezulu zokuvuza, kufuneka usebenzise i-Hastelloy. Ekukhethweni kwezinto ezinganyangekiyo kwi-corrosion, kuyimfuneko ukushwankathela kwaye uqwalasele i-concentration ye-liquid, iqondo lokushisa kunye noxinzelelo, kwaye wenze ukhetho malunga nokutshatyalaliswa komatshini. 3. Umgaqo wokusebenza kunye neenzuzo zevalve yokulawula umoya (1) Uhlalutyo lomgaqo wokusebenza kwevalve yokulawula umoya Ivalve yendawo kunye namanye amacandelo anokugqiba isiphumo sokuqhuba ivalve, kwaye inokugqiba uhlengahlengiso olulungelelanisiweyo lokutshintsha, kwaye emva koko. sebenzisa imiqondiso eyahlukeneyo yolawulo ukugqiba ukusetwa kombhobho wobushushu obuphakathi, uxinzelelo, izinga lokuhamba kunye nezinye iiparamitha. Ivalve yokulawula umoya ineempawu zokuphendula ngokukhawuleza, ulawulo olulula, kunye nokhuseleko lwangaphakathi, kwaye akukho mfuneko yokufakela izixhobo ezinobungqina bokudubula. Emva kokuba igumbi lomoya linomqondiso othile woxinzelelo, inwebu iya kubonisa ukutyhala, ukutsala ipleyiti yokutyhala, isiqu sevalvu, intonga yokutyhala, i-compress spring, kunye ne-valve core ukuhamba. Emva kokuba i-valve core yahlulwe kwisitulo sevalve, umoya ocinezelweyo uya kujikeleza. Emva kokuba uxinzelelo lwesignali lufikelela kwixabiso elithile, i-valve iya kuhlala kwindawo yokuvula ehambelanayo. I-valve yokulawula i-pneumatic inokuthembeka okuphezulu, isakhiwo esilula, kwaye ayiyi kubonisa i-spark yombane kwinkqubo yomsebenzi. Ke ngoko, isikali sayo sosetyenziso sibanzi kakhulu, kwaye sinokusetyenziswa nakwizikhululo zothumelo lwerhasi ezineemfuno zobungqina bokudubula.
2. Uhlalutyo lweempawu zokuhamba kwevalve yokulawula Iimpawu zokuhamba kwevalve yokulawula ziquka ukuhamba komsebenzi kunye nokuhamba kakuhle. Ngaphantsi kwemeko yokuba ukuhlukana koxinzelelo phakathi kwe-inlet kunye ne-outlet ihlala rhoqo, ukuhamba nge-valve yolamlo kukuhamba okufanelekileyo. Oku kuhamba kakuhle kunomgca ochanekileyo, iParabola, ukuvulwa ngokukhawuleza, iimpawu zepesenti. Ngokumalunga nomgangatho wokulungisa, inkqubo yokulawula imichiza ngokuzenzekelayo ixhomekeke ikakhulu kumgaqo wembuyekezo yeempawu zokuvelisa. Ukuveliswa kwenkqubo kunemithetho engqongqo kwiimpawu zevalve yokulawula. Ngokwale nto, xa ukhetha, kuyimfuneko ukuhlalutya i-amplification factor of the valve regulating. Thintela i-coefficient yokulungelelanisa ekutshintsheni. Ngokubhekiselele kwiimpawu zokuhamba, i-valve yokulawula iya kubonisa utshintsho ekuhambeni ngexesha lenkqubo yokusebenza, elula kakhulu ukubangela imibuzo yokungcangcazela. Xa umsebenzi omkhulu wokuvula uphunyezwa, i-valve yokulawula iya kubonakala icotha, kwaye ilula kakhulu ukubonisa ukuba ulungelelwaniso aluzange lufike ngexesha kwaye ulungelelaniso alubonakali. Ukuqwalasela le nto, i-valve yokulawula ukuhamba komgca akufanele isetyenziswe kwinkqubo enotshintsho olukhulu.
3. Amanyathelo okhuseleko xa ufaka ivalve elawulayo Ngaphambi kokufaka ivalve yokulawula, isivalo esilawulayo kufuneka sihlalutywe ngononophelo nangolwazi. Emva kokuba umbhobho ucocwe ngokucokisekileyo, ukufakela kungaqhutywa. Ngethuba lokufakwa kwenkqubo, kuyimfuneko ukugcina imeko echanekileyo okanye ethe tye. Ngexesha elifanayo, kuyimfuneko kwakhona ukumisa izibiyeli kwizikhundla zangaphambili nasemva kwe-valve yokulawula ukuqinisekisa ukhuseleko kunye nokuzinza komsebenzi we-valve olawulayo. Ukongezelela, kwinkqubo yokufakela, kuyafuneka kwakhona ukuhlalutya ulwalathiso lokuhamba. Ukuze kuqinisekiswe umgangatho wesixhobo, isixhobo kufuneka sifakwe phantsi kweemeko zoxinzelelo oluncinci. Kwakhona kuyimfuneko ukuqinisekisa ukuba ubude becandelo lombhobho othe ngqo kwindlela yokungena ihlangabezana neemfuno zenkcazo. Ukuba ukufakela kufuna i-valve encinci ye-diameter, kufuneka ihambelane ngokungqongqo nemimiselo yokucwangcisa. Ngaphantsi kweemeko eziqhelekileyo, icandelo lombhobho elichanekileyo kwindlela yokuphuma kufuneka libe ngama-3 ukuya ku-5 amaxesha amakhulu kunobubanzi be-valve. Ngethuba lofakelo, kuyimfuneko ukushiya indawo eyaneleyo ukwenzela ukuba kube lula ukukhuselwa kunye nokusebenza okulandelayo, kunye nokulawula ububanzi bombhobho. Xa ukhetha indlela yokudibanisa umbhobho, izinto ezahlukeneyo ezichaphazelayo kufuneka zishwankathelwe kwaye zihlalutywe. 4. Ekugqibeleni, i-valve yokulawula iyona nxalenye ephambili yekhemikhali yokulawula loop ngokuzenzekelayo. Ukukhethwa, isixhobo kunye nokukhuselwa kwevalve yokulawula kuya kuchaphazela umsebenzi wenkqubo yeekhemikhali. Ngoko ke, umsebenzisi kufuneka athobele ngokungqongqo izikhokelo zesixhobo esifanelekileyo kwaye ashwankathele Ukuhlalutya iindidi ngeendidi, soloko ukhetha ivalve elawulayo. Ngophuhliso lwesayensi kunye nobuchwepheshe, ulawulo oluzenzekelayo lwekhemikhali luye lwabeka phambili iimfuno eziphezulu zokulawula iivalvu. Oku kufuna uphando olunzulu malunga neevalvu zokulawula ukuqhubeka nokuphucula ukuthembeka kunye nokuzinza kweevalve zokulawula.
Ixesha lokuposa: Nov-27-2021