Ukuhlaziywa kafushane kokukhubazeka okuvamile namazinga okuhlola okuhlolwa kwekhwalithi yokubukeka kwamavalvu
I-torque amandla abangela ukuba into iphenduke. I-torque yenjini iyitorque ekhishwa yinjini ukusuka ekugcineni kwe-crankshaft. Ngaphansi kwesimo samandla angaguquki, ihambisana ngokuphambene nesivinini senjini. Lapho ijubane lishesha khona, iba yi-torque encane, kanye netorque enkulu, ekhombisa umthamo womthwalo wemoto ebangeni elithile.
Incazelo yebizo: torque
I-torque amandla abangela ukuba into iphenduke. I-torque yenjini iyitorque ekhishwa yinjini ukusuka ekugcineni kwe-crankshaft. Ngaphansi kwesimo samandla angaguquki, ihambisana ngokuphambene nesivinini senjini. Lapho ijubane lishesha khona, iba yi-torque encane, kanye netorque enkulu, ekhombisa umthamo womthwalo wemoto ebangeni elithile.
Iyiphi indlela yokubala i-valve torque? I-torque ye-valve iyipharamitha ebalulekile ye-valve, ngakho-ke abangani abaningi bakhathazeke kakhulu ngokubala kwe-torque ye-valve. Ngezansi, inethiwekhi ye-valve yephampu yemboni yomhlaba ukuze wethule ukubala kwetorque yevalvu ngokuningiliziwe.
Ukubalwa kwetorque yevalvu kungokulandelayo: Ingxenye yobubanzi be-valve x 3.14 isikwele indawo yepuleti le-valve, iphindaphindeka ngomfutho wokuthwala (okungukuthi, umsebenzi we-valve yokucindezela) dweba shaft kungcindezi emile, iphindaphindwe nge-coefficient of friction. (hlola ithebula le-coefficient yensimbi evamile engu-0.1, insimbi ye-rubber friction coefficient 0.15), inani lezikhathi zobubanzi be-ekseli ehlukaniswe ngo-1000 ngetorque ye-valve esheshayo, iyunithi yezinkomo, amamitha, Inani lokuphepha lereferensi lamadivayisi kagesi nomoya womoya. ama-actuator izikhathi ezingu-1.5 ze-torque ye-valve.
Lapho i-valve iklanywa, ukukhethwa kwe-actuator kulinganiselwa, okuhlukaniswe ngokuyisisekelo izingxenye ezintathu:
1. I-Friction torque yezimpawu (i-sphere nesihlalo sevalvu)
2. I-Friction torque yokupakisha esiqwini se-valve
3. I-Friction torque yokuthwala esiqwini se-valve
Ngakho-ke, ukucindezela okubaliwe kuvame izikhathi ezingu-0.6 ukucindezela okujwayelekile (mayelana nokucindezela kokusebenza), futhi i-coefficient ye-friction inqunywa ngokusho kwezinto. I-torque ebaliwe iphindaphindwa izikhathi ezingu-1.3~1.5 ukuze ukhethe i-actuator.
Ukubalwa kwe-torque ye-valve kufanele kucabangele ukungqubuzana phakathi kwepuleti le-valve nesihlalo, ukungqubuzana phakathi kwe-valve shaft nokupakisha, kanye nokusunduza kwepuleti le-valve ngaphansi komehluko ohlukene wengcindezi.
Ngoba kuneZINHLOBO eziningi zediski, isihlalo kanye nokupakisha, ngayinye inamandla ahlukene okungqubuzana, usayizi wendawo yokuxhumana, izinga lokucindezelwa, njalonjalo. Ngakho-ke, ngokuvamile ikalwa ngethuluzi kunokuba ibalwe.
Inani elibaliwe le-torque ye-valve linenani elikhulu lokubhekisela, kodwa alikwazi ukukopishwa ngokuphelele. Ngaphansi kwethonya lezici eziningi, ukubala kwe-torque ye-valve akunembile kunemiphumela yokuhlola.
Ukukhubazeka Okujwayelekile kanye Namazinga Okuhlola okuhlolwa kwekhwalithi yokubukeka kwamavalvu Ngenxa yokungaguquguquki kokukhiqizwa komkhiqizo, ukuhlolwa kwekhwalithi kanye nezindinganiso zokwamukelwa endaweni, izinga ngalinye linezimiso zokwahlulela ezihlukene zokukhubazeka, futhi ngezinye izikhathi kuyoba neziphetho ezihlukene zokuhlola. Isibonelo, izinga lomkhiqizo wevalvu yokubumba i-GB/T 1228-2006 ivumela ukukhubazeka ngaphakathi kosayizi womkhawulo ongu-5% noma 1.5mm, futhi izinga lomkhiqizo we-valve yokuphosa JB/T 7927-2014 livumela izibonelo ezimbili zokukhubazeka ku-A no-B. ezingeni lokwamukelwa kwenkundla i-SY/T 4102-2013, indawo engaphandle yevalvu akufanele ibe nemifantu, ama-trachholes, isikhumba esinzima, amachashaza, ukulimala komshini, ukugqwala, izingxenye ezingekho kanye nama-nameplates.
Ngenxa yokungaguquguquki kokukhiqizwa komkhiqizo, ukuhlolwa kwekhwalithi kanye nezindinganiso zokwamukela endaweni, izimiso zokunquma zokukhubazeka ezingeni ngalinye zihlukile, futhi ngezinye izikhathi kuzovela iziphetho ezihlukene zokuhlola. Isibonelo, izinga lomkhiqizo wevalvu yokubumba i-GB/T 1228-2006 ivumela ukukhubazeka ngaphakathi kosayizi womkhawulo ongu-5% noma 1.5mm, futhi izinga lomkhiqizo we-valve yokusakaza i-JB/T 7927-2014 livumela izibonelo ezimbili zokukhubazeka ku-A no-B. Izinga lokwamukela inkundla ye-valve i-SY/T 4102-2013 ibeka ukuthi ingaphezulu le-valve akufanele libe neminkenke, ama-trachholes, isikhumba esinzima, amabala, ukulimala komshini, ukugqwala, izingxenye ezingekho, ama-nameplates nokuxebuka kopende, njll. Izinga lokuhlola ikhwalithi yamavalvu I-SH 3515-2013 ibeka ukuthi lapho umzimba we-valve uphonswa, ubuso bawo kufanele busheleleke, ngaphandle kokuqhekeka, izimbobo ezinciphayo, ama-tracholes, ama-pores, ama-burrs nokunye ukukhubazeka; lapho umzimba we-valve wakhiwe, ubuso bawo kufanele bungabi nemifantu, ama-interlayers, isikhumba esinzima, amabala, ukuntuleka kwehlombe nezinye iziphambeko.
Uwoyela negesi yemvelo kuyavutha, kuyaqhuma, futhi kuyagqwala. Ngokungeziwe ekusebenziseni ngokuqinile i-SH3518-2013 ejwayelekile, ukuhlolwa kwekhwalithi yama-valve kufanele futhi kubhekisele esimisweni sokwamukelwa kwenkundla yevalvu kanye nezinga lokukhiqiza levalvu. Ngenkathi uncoma futhi ukhetha abakhiqizi abahlinzeki, ukuqinisa ukuhlolwa kwefekthri, ukuhlolwa kwekhwalithi ye-valve kufanele kusekelwe endaweni yesici, ubukhulu kanye nokuma. Futhi ingcindezi yokusebenza kwe-valve, i-work medium, ukusetshenziswa kwemvelo yokuhlola okuphelele, hhayi kuphela ukuqinisekisa ikhwalithi yomkhiqizo, kodwa futhi nokwenza ubulungisa, ukulunga.
Ukuhlola iphutha lokubukeka
Ngo-2014, inani lama-valve angu-170284 ezinhlobo ezehlukene ahlolwe yi-Changqing Oilfield Technology Monitoring Center, kanti ama-valve angu-5622 ayengafaneleki, nenani elingafaneleki elingu-3.30%, phakathi kwawo ama-valve angu-2817 ayengafaneleki ekuhlolweni kwekhwalithi yokubukeka, okubalelwa ku-50.11% wama-valve angu-50.11%. inani eliphelele lama-valve angafanelekile. I-trachoma eyinhloko, ama-pores, imifantu, ukulimala komshini, ukuncipha, amamaki nokuqina kodonga lomzimba isakhiwo esingafanelekile nosayizi.
1. Izici zokubukeka
Isizathu esiyinhloko ukuthi ukuphela kwesiqu akucutshungulwa, isiqu kanye nesondo lesandla akukwazi ukuhlanganiswa eduze, i-valve ayiguquguquki ukuvula nokuvala, noma ubukhulu bodonga lwe-valve, ububanzi besiqu kanye nobude. yesakhiwo asihlangabezani nezidingo ezijwayelekile. Ubude be-valve yesango i-Z41H-25 DN50 bungama-230mm ngokwezinga, kanti ubude obulinganisiwe bungu-178mm.
2. Indlela yokuhlola
Isakhiwo se-valve singahlolwa ngokuhlola okubonakalayo. Ubukhulu bodonga lomzimba we-valve ngokuvamile bulinganiswa imitha yobukhulu be-ultrasonic, futhi ubude besakhiwo ngokuvamile bulinganiswa ngama-vernier caliper, izilinganiso zetheyiphu, amarula okujula namanye amathuluzi nezinsimbi. Ingxenye elinganisiwe kufanele ipholishwe ngokushelelayo lapho kukalwa ubukhulu bodonga, ukuze kungathinti ukunemba kokuhlolwa. Ubukhulu bodonga oluncane lomzimba ngokuvamile luvela ezinhlangothini zombili zephaseji lokugeleza noma phansi komzimba.
3. Ukuhlolwa kokukhubazeka
Amavaluvu ANESAKHIWO samavalve angavumelani, ukujiya kodonga lomzimba, ubude BOKUHLELWA, KANYE NObubanzi be-STEM athathwa ngokuqondile ngokuthi AKUNGOKUHLANGANISA.
Trachoma kanye stoma
Ukuncipha kanye ne-porosity
1. Izici zokubukeka
I-shrinkage kanye ne-porosity ngokuvamile kutholakala engxenyeni eqinile ye-valve yokuphonsa (ijoyinti elishisayo) noma ingxenye yokuguqulwa kwesakhiwo. I-shrinkage kanye nendawo yangaphakathi evulekile ngaphandle kombala we-oxidation, ukwakheka okungajwayelekile, udonga lwama-pore olumahhadla okuhambisana nokungcola okuningi nezimbotshana ezincane.
2. Indlela yokuhlola
Ukuncipha nokubukeka okuxekethile akulula ukukuthola, futhi ukuvuza ngokuvamile kwenzeka ngesikhathi sokuhlolwa kwengcindezi. Ngesikhathi sokuhlolwa, ukunakwa kufanele kukhokhwe ezingxenyeni ezinciphayo zomlomo othululwayo, isikhuphukeli kanye nomzimba we-valve we-valve. Ngemuva kokuhlolwa, lezi zingxenye ezingenhla kufanele zithintwe ngesandla ukuvimbela amaphutha ukuthi angaphuthelwa ngenxa yokumboza upende.
3. Ukuhlolwa kokukhubazeka
Ukuncipha kulula ukubangela ukungaqhubeki kwesakhiwo se-valve, ukuncipha noma ukuxega kufanele kubhekwe njengobubanzi obungafanelekile.
Umfantu
1. Izici zokubukeka
I-crack ngokuvamile ivela engxenyeni ehlangene eshisayo yezindonga ezimbili zomzimba we-valve eyakhayo kanye nengxenye yokuguqulwa kwesakhiwo, njengempande ye-flange kanye nobuso obuyi-convex bodonga olungaphandle lomzimba we-valve. Ukujula komfantu akujulile, ngokuvamile kusekelwe emigqeni yezinwele. Ukuma kokuqhekeka okushisayo kuyahlukumeza futhi akujwayelekile, igebe libanzi, ingxenye yesiphambano i-oxidized sina, futhi ukuqhekeka akuyona i-metallic luster, futhi ukuqhekeka kwenzeka futhi kuthuthuke emngceleni wokusanhlamvu. Ukuqhekeka okubandayo kuvame ukuqondile, ingaphezulu lensimbi lokuqhekeka alinayo i-oxidized, futhi ukuqhekeka kuvame ukudlula okusanhlamvu kuye esigabeni sonke.
2. Indlela yokuhlola
Ngaphezu kokuhlola okubukwayo, impushana kazibuthe noma ukuhlolwa kwe-osmotic nakho kungasetshenziselwa imifantu ebusweni be-valve.
3. Ukuhlolwa kokukhubazeka
Ukuba khona kwemifantu kunciphisa indawo ye-valve ene-cross-sectional, futhi ukuphela kwe-crack kwenza amanotshi abukhali, futhi ukucindezeleka kugxile kakhulu, okulula ukunwetshwa futhi kuholele ekuhlulekeni. Ngokuvamile ukuqhekeka okubonakalayo okusobala akuvunyelwe, kungakhathaliseki ukuthi indawo yabo kanye nosayizi bahlulelwa njengokungafaneleki. Ngemva kokutholakala komfantu, ingapholishwa ngesondo lokugaya. Uma kuqinisekiswa ukuthi ukuqhuma kuqedwe ngokuphelele, i-valve surface ayilimazi, futhi ubukhulu buncane futhi bungabonakali, bungagwetshwa njengobufanelekile, ngaphandle kwalokho buzophathwa njengembuyiselo.
Ukulimala komshini
1. Izici zokubukeka
Ukulimala kwemishini i-valve ngesikhathi sokuthutha, ukuphatha, ukuphakamisa, ukupakisha nokunye ukulimala okungqongqozayo, noma ukusika, ukusika kanye nokunye ukulimala kokucubungula, okufana ne-convex noma indiza evala uphawu lwe-flange yokuvala i-surface scratch, i-indentation, i-casting riser gas cutting surface kanye amaphutha okusika onqenqemeni okwakhiwa ngokungacutshungulwa. Lezi ziphambeko zifinyelela ekujuleni okuthile, zizophinde zithinte ikhwalithi nokuphila kwe-valve.
2. Indlela yokuhlola
UKULIMALA Komshini EBUHLENI VEVA UNGATHOLAKALA NGOKUHLOLA OLUBONAKALAYO, FUTHI UKUJULA KOBUCIKO BUYIKALWA NGEMBUSI WOKUHLOLA I-WELD NOMA UMBUSI OKUJULA.
3. Ukuhlolwa kokukhubazeka
Ukuklwebheka kwe-radial, ukulimala komshini kanye nokukhubazeka endaweni evalekayo ye-convex noma i-flange evaliwe yendiza, kanye nokuklwebheka namaqhuqhuva ezinhlangothini ezimbili zendandatho exhumene ne-flange evala umsele ongaphezulu, kuzothinta indawo yokuvala yama-valve flange futhi ngokuvamile akuvunyelwe. ukuba khona. I-Flange ayivaliwe, imihuzuko yomzimba kanye nekhava ebusweni kanye nokulimala komshini inqobo nje uma ukujula kungaphakathi kwebanga lokuvunyelwa, akuthinti ikhwalithi iyonke yevalvu, ingamukelwa njengemikhiqizo efanelekayo. Kodwa-ke, imihuzuko ebukhali kufanele ipholishwe ishelele ukuze kuvinjelwe ukugxila ekucindezelekeni.
Ukuhlonza umzimba we-valve nokunye
Ubukhulu bodonga lomzimba oyinhloko, ubude besakhiwo abufanelekile noma ukucindezela okulinganiselwe komzimba ku-die casting, uphawu lokuhweba lukhona ukwenzeka kokuguqulwa, inqubo yokuhlola kufanele ivimbele ipuleti noma i-valve yokucindezela okuphansi esikhundleni se-valve yomfutho ophezulu. Isibonelo, umfutho ojwayelekile othi “25″ ophonswe ku-valve womzimba we-Z41H-25 DN50 ushintshiwe, futhi ubukhulu bomzimba we-valve bulinganiswe ukuthi bube ngu-7.8mm, obungahambisani nesimiso sika-8.8mm. i-valve esetshenziswa embonini ye-petrochemical. Ingeyevalvu engu-1.6mpa esikhundleni sevalvu engu-2.5mpa ngemva kokupholisha umaki.
isiphetho
Ukuhlolwa kwengcindezi kungenziwa kuphela ngemuva kokuthi ikhwalithi yokubukeka ye-valve idlula ukuhlolwa. Uma izinga lokubukeka lingafaneleki, i-valve izovuza ngesikhathi sokuhlolwa okungenani, futhi ingozi yokuqhekeka izokwenzeka kakhulu. Uma iphutha linganqunywa, lizodala ukumosha okungadingekile kanye nezingxabano zekhwalithi. Ngakho-ke, ukusebenza kwe-valve ehlukene kanye nezidingo zokuthembeka akufani, ukukhubazeka okwamukelekayo akufani, ukunqunywa kokulimala kwe-valve ebusweni kufanele kusekelwe ekusetshenzisweni kwe-valve, uhlobo lokukhubazeka, indawo, ubukhulu kanye nokunye ukuhlaziywa okuphelele, ukuze kuhlolwe ikhwalithi yesayensi, efanelekile, efanelekile, ukuze kuhlangatshezwane nezidingo zokwakhiwa kobunjiniyela bezinkundla zikawoyela negesi.
Isikhathi sokuthumela: Aug-20-2022
