Iivalvu zihlelwa ngobungakanani obuqhelekileyo / uxinzelelo / ubushushu / izinto eziphathekayo / ukudibanisa / ukuphatha
2022-07-16
Iivalvu zihlelwa ngokobungakanani obuqhelekileyo / uxinzelelo / ubushushu / izinto / uqhagamshelo / ukuphatha Ukubola kweekhemikhali zentsimbi kuxhomekeke kwiqondo lobushushu, umthwalo womatshini weendawo zokukhuhlana, ukuzinza kweesulfides eziqulethwe kwizinto zokuthambisa kunye nokumelana neasidi, ixesha lokunxibelelana okuphakathi kunye nefuthe le-catalytic yesinyithi kwinkqubo ye-nitriding, izinga lokuguqulwa kweemolekyuli zezinto ezibolayo ukuya kwisinyithi, njl. njl. Ukusukela ukuba umhlwa usenzeka kwintsebenziswano ezenzekelayo phakathi kwesinyithi kunye nokusingqongileyo okungqongileyo, indlela yokwahlula iintsimbi kwindawo engqongileyo okanye ukusebenzisa izinto ezingeyiyo eyentsimbi eyenziweyo iye yaba yinkxalabo eqhelekileyo. 2. Kuyaziwa ukuba umonakalo wensimbi unempembelelo enkulu kubomi, ukuthembeka kunye nobomi benkonzo yeevalve. Isenzo se-mechanical and corrosive agents kwintsimbi kwandisa kakhulu inani elipheleleyo lokunxiba kwindawo yokudibanisa. I-Valve ngexesha lokusebenza, i-friction yobuso bexabiso elipheleleyo lokunxiba. Ngexesha lokusebenza kwevalvu, iindawo zokukhuhlana ziyanxitywa kwaye zonakaliswe ngenxa yesenzo soomatshini kunye neekhemikhali okanye ukusebenzisana kwe-electrochemical phakathi kwesinyithi kunye nokusingqongileyo. Kwivalve, iimeko zemozulu yokusebenza kombhobho zinzima; Ubukho be-hydrogen sulfide, i-carbon dioxide kunye nezinye ii-asidi ze-organic kwi-oyile, igesi yendalo kunye namanzi okugcinwa kwamanzi kwandisa amandla atshabalalisayo kwi-metal surface, ngaloo ndlela ilahlekelwa ngokukhawuleza amandla ayo okusebenza. 3, ngenxa yokonakala kweekhemikhali zesinyithi kuxhomekeke kwiqondo lobushushu, umthwalo womatshini wamacandelo okukhuhlana, izinto zokuthambisa eziqulethe i-sulfide kunye nokuzinza kwayo kokumelana ne-asidi kunye nobude obuphakathi bokunxibelelana kunye nesinyithi kwinkqubo ye-nitriding yesenzo sokwenza i-catalytic, ukubola kwemolekyuli zezinto. kwisantya sokuguqula isinyithi njalo njalo. Ngoko ke, indlela ye-anticorrosion yevalve yesinyithi (okanye umlinganiselo) kunye nokusetyenziswa kwe-valve yezinto zokwenziwa ibe yinto enye yezihloko zophando lweshishini levalve. I-4, ivalve yesinyithi ye-anticorrosion, inokuqondwa njengevalve yesinyithi egqunywe ukukhusela imeko yomaleko okhuselayo ekudlekeni (njengepeyinti, ipeyinti, izinto zokuthambisa, njl. njl.), ukuze ivalve nokuba ikwimveliso, ulondolozo, okanye kuyo yonke inkqubo yokusetyenziswa kwayo ayinamhlwa. I-5, indlela ye-valve yensimbi ye-anticorrosion ixhomekeke kwixesha elifunekayo lokukhusela, ukuthutha kunye neemeko zokugcinwa, iimpawu zesakhiwo se-valve kunye nezinto eziphathekayo, ngokuqinisekileyo, ukuqwalasela umphumo wezoqoqosho wokususa i-anticorrosion. Ukuhlelwa kweevalvu ngokwedayamitha yegama / uxinzelelo / ubushushu / izinto / imowudi yoqhagamshelo / imo yokusebenza Ukuhlelwa kweevalvu ngokwedayamitha yegama 1, "ivalve yedayamitha encinci" idayamitha yegama DN≤40mm 2, "ivalve edayamitha ephakathi" idayamitha ephakathi DN50-300mm 3, "ivalve yedayamitha enkulu" Ivalve yedayamitha yegama DN350-1200mm ivelufa 4, "ivalve enkulu yodayamitha" ivalve yegama elithi DN≥1400mm ivalve yevalve zihlelwa njengevalve yobungakanani obuqhelekileyo 1, "ivalve encinci yecaliber" idayamitha yegama DN≤40mm ivelufa 2, "phakathi ivelufa yecaliber "ivalve yedayamitha yegama DN50-300mm ivelufa 3, "ivalve yecaliber enkulu" ivalve yegama elinguDN350-1200mm 4, "ivalve enkulu yedayamitha" idiameter yegama DN≥1400mm ivalve Ulwahlulo lweevalvu zoxinzelelo lwegama 1, "ivalve yokufunxa" uxinzelelo olusebenzayo lusezantsi kunomgangatho wevalve yoxinzelelo lomoya 2, "ivalve yoxinzelelo oluphantsi" uxinzelelo lwegama PN≤ 1.6mpa ivelufa 3, "ivalve yoxinzelelo oluphakathi" uxinzelelo lwegama PN2.5-6.4mpa ivelufa 4, "ivalve yoxinzelelo oluphezulu" uxinzelelo lwegama PN10.0-80.0mpa ivelufa 5, "ivalve ephezulu yoxinzelelo oluphezulu" uxinzelelo lwegama PN≥100MPA ivelufa Ngokwe-valve ye-valve ephakathi yokusebenza 1, "ivalve yobushushu obuphezulu" T > 450℃ ivelufa 2, "ivalve yobushushu obuphakathi" 120℃≤ T ≤450℃ ivalve 3, "ivalve yobushushu obuqhelekileyo" -40℃≤ T ≤120℃ ivalve 4, "ivalve yobushushu obuphantsi" -100℃≤ T ≤-40℃ ivalve 5, "** ivalve yobushushu" T