Uyazi, lapho abantu abaningi abangaphandle kwenkundla bezwa 'i-valve yokuhlola', babona ngeso lengqondo isheke elilula emugqeni wamanzi. Kulungile lokho, kodwa akulula ukuklwebheka. Ingxoxo yangempela iqala lapho ucacisa eyodwa yolayini wesitimu esinomfutho ophezulu, noma isistimu yokudlulisa amakhemikhali ebolayo, futhi uyabona ukuthi ukukhetha phakathi kwesheke le-wafer enamapuleti amabili kanye nesheke le-piston akukona okwezemfundo—kungumehluko phakathi kwesistimu ehumzayo naleyo ezibambayo ibe yizicucu ezinyangeni eziyisithupha. Ngikubonile kokubili.
Umsebenzi Owumongo kanye Nenkimbinkimbi Efihliwe
Isimiso silula: vimbela ukubuyela emuva. Kodwa ukubulawa? Yilapho kugqitshwa khona amashumi eminyaka ekhanda elibuhlungu. Akukhona nje nge-disc noma ibhola elimisa ukugeleza okuhlanekezelayo; kumayelana nokuthi ivala ngokushesha kangakanani, ukwehla kwengcindezi okukudalayo lapho ivuliwe, kanye nokuthi kwenzekani kulowo mzuzwana we-split lapho ukugeleza kuhlehla. Ukuvala kancane hlola i-valve emugqeni wokukhipha iphampu kungabangela isando samanzi sibe nzima kakhulu kube sengathi ipayipi lishaywa ngesando. Ngifunde ukuthi kunzima ohlelweni lwamanzi abandayo ekuqaleni komsebenzi wami. Sisebenzise isheke lokujikijela elijwayelekile ngoba lalishibhile futhi litholakala. Umphumela wokushaqeka kwamagagasi aqhekeka ukulingana ezinyangeni ezimbili ngemuva kokusebenza. Izindleko ze-valve zazingenamsebenzi uma kuqhathaniswa nesikhathi sokuphumula nokulungiswa.
Yingakho ukukhetha izinto ezibonakalayo kuba okuhamba phambili. I-cast iron ingase isebenzele amanzi angabalulekile, kodwa kunoma yini enokushisa, ukugqwala, noma imihuzuko, ubheke insimbi, i-stainless, noma ama-alloys akhethekile. Kulapho ukubambisana nomsunguli kanye nochwepheshe bemishini oqonda izingxenye zokusebenza kubalulekile. Ngisebenze nabahlinzeki abanjalo I-Qingdao Qiangsenyuan Technology Co., Ltd. (QSY) kumaphrojekthi adinga imizimba yama-valve okuhlola ngokwezifiso. Okuhlangenwe nakho kwabo ku ukubunjwa kwegobolondo futhi ukutshala imali kumajiyometri ayinkimbinkimbi, alandelwa ngokunemba CNC imishini indawo yokuhlala kanye nama-hinge amaphuzu, yilokho okuguqula umklamo ephepheni ube ingxenye ethembekile. Awukwazi ukuvele uthenge lokhu eshalofini elijwayelekile; idinga ukwakhiwa futhi yenziwe njengengxenye yesistimu.
Ukukhethwa kwe-alloy kuqondisa ngokuqondile impilo yesevisi. Ngohlelo lokusebenza lwamanzi okuphakelayo kubhayela, umzimba we-carbon steel one-trim engagqwali (idiski, iphinikhodi) ungase wanele. Kodwa ngomugqa wokudlula esitshalweni samakhemikhali esiphatha ama-chloride, ucacisa okuqinile insimbi engagqwali noma i-valve ye-alloy esekelwe ku-nickel ukugwema ukwehluleka ukugqwala okuyinhlekelele. Ikhwalithi yokusakaza lapha ayinakuxoxiswana—noma iyiphi i-porosity noma ukufakwa emngceleni wengcindezi iyindawo yokuvuza yesikhathi esizayo.
Izinhlobo Endle: Ngale Kwekhathalogi
Imininingwane yekhathalogi ikutshela usayizi nesilinganiso sokucindezela. Abavamile ukukutshela mayelana nokusebenza okuguquguqukayo. Thatha i-valve yokuhlola ethule noma esekelwe entwasahlobo. Kuhle kakhulu ekuvimbeleni i-slam, akunjalo? Ngokuvamile, yebo. Kodwa ngake ngabona uhlelo lapho izinga lentwasahlobo laliphezulu kakhulu kukhanda lepompo elitholakalayo, okubangela ukwehla kwengcindezi engapheli kanye nemishini ebulawa yindlala ezansi nomfula. Kwakudingeka sidonse i-valve, silinganise intwasahlobo, futhi sithole inkambiso ngokulayishwa kuqala okuphansi. Bekuyimininingwane emincane enomthelela omkhulu wokusebenza.
Ukuhlolwa kwewafa enamapuleti amabili kuhle kakhulu ekongeni isikhala nesisindo. Kodwa uma ubhekene noketshezi oluthwala izinhlayiya-ezifana ne-slurry noma amanzi angcolile-lawo mahinji kanye nokukhipha okuncane okuzungeze amapuleti kungase kube izindawo zokuvala. Ngingancika ekuhlolweni kwebhola noma edizayini yediski etshekisayo kulezo zimo, noma ngabe inkulu kakhulu. Ithimba labalungisayo lizokubonga ngokuhamba kwesikhathi.
Bese kuba nevalvu yokuhlola i-lift. Kuthembeke kakhulu ekugelezeni okuya phezulu okuqondile. Kodwa ifake ivundlile ngaphandle komcabango wesibili, futhi udale i-paperweight. Umhlahlandlela kanye nesisindo sediski kudinga amandla adonsela phansi ukuze asebenze njengoba yakhelwe. Kuzwakala kusobala, kodwa ungamangala ukuthi kaningi kangakanani amaphutha okufaka eyenzeka ngenxa yokuthi uhlobo lwevalvu lwalungaqondwa phansi ngesikhathi sokufakwa.
Ukuhlanganisa kanye ne-System Mindset
A hlola i-valve akusona isiqhingi. Ukusebenza kwayo kuboshelwe kwijiko lephampu elikhuphuka nomfula kanye ne-dynamics yesistimu ezansi nomfula. Ukucacisa eyodwa kudinga ukubuza: Ithini inhloko yokuvala iphampu? Ingakanani isivinini esikhulu sokugeleza okubuyela emuva ngaphambi kokuba i-valve ivaleke ngokugcwele? Ingabe likhona ithuba lokuhamba ngebhayisikili kwe-valve ngokushesha, okungaholela ekugqokeni ngaphambi kwesikhathi esihlalweni?
Ezinhlelweni zomshini, njengalezo zamasistimu asebenza ngamanzi noma okugcoba, ivalvu yokuhlola ivamise ukudinga ukuhlanganiswa kubhulokhi ehlukahlukene. Lena ayiseyona i-valve ezimele; yiphaseji elakhiwe ngomshini elinopapa noma ibhola nentwasahlobo. Ukunemba komshini—indawo engaphezulu yesihlalo, ububanzi obuyibhore, ukujula komgodi wasentwasahlobo—kuthinta ngokuqondile amazinga okuvuza kanye nokunemba kwengcindezi yokuqhekeka. Lena indawo yengxenye yokunemba, lapho kunesitolo CNC imishini amandla kanye namakhono e-metrology abaluleke njengokulingisa okungahluziwe.
Sibe nephrojekthi yesitendi sokuhlola esidinga ivalvu yokuhlola enembile kakhulu, enengcindezi ephansi. Iyunithi engaphandle kweshalofu ngeke ilingane nomklamo ohlukahlukene. Isixazululo sasiwukuba umzimba we-valve nesihlalo kufakwe imishini ngokuqondile ebhulokhini ehlukahlukene kusukela ku-forging yensimbi engagqwali eqinile, enespring esicijwa ngokwezifiso kanye nebhola. Ukubekezelelana kwakukuma-microns. Isebenze kahle ngoba umakhi wemishini wayiphatha njengengxenye ebalulekile yokulawula uketshezi, hhayi nje ucezu lwensimbi olunembobo kulo.
Amamodi Okwehluleka Nokuxilongwa Komhlaba Wangempela
Abahluleki ngomusa. Ngokuvamile, ukuvuza (isihlalo esihlulekile), i-slam (indlela yokuvalwa ehlulekile), noma ukuvaleka okuphelele (idiski livaleleke livuliwe noma livaliwe). Ukuxilongwa kuvame ukuqala ngokulalela. Umsindo oshayayo ekuvaleni kwephampu ukhomba ukuvala kancane. Ingxoxo engaguquki, enemvamisa ephezulu ingase isho ukuthi ivaluzi iyabhakuza endaweni evuleke kancane ngenxa yokugeleza okungazinzile.
I-corrosion yangaphakathi ingumbulali othule. Ngike ngavula a hlola i-valve kusukela kulayini wokupholisa amanzi olwandle owawubukeka kahle ngaphandle. Ngaphakathi, iphinikhodi yehinge yacishe yagqwala, futhi idiski yayiboshwe njengenyanga. Izinto ezisetshenziswayo bekufanele zibe ngu-316, kodwa ikhwalithi yokulingisa noma ibanga elithile elisetshenzisiwe belingekho endaweni ye-chloride. Kungakho ukulandeleka kanye nezitifiketi zezinto ezibonakalayo ezivela kumnikezeli wakho wempahla kubalulekile. Inkampani efana ne-QSY, egxile kakhulu kuma-alloys akhethekile, ingaba yindawo yokuya endaweni enokhahlo, ihlinzeka ngezinto ezifana ne-duplex engagqwali noma ama-alloys asekelwe ku-cobalt ukuze kuguge kakhulu futhi kugqwale.
Ukugqoka kungenye inkinga. Kusistimu ye-steam, ngisho nenani elincane lokudweba ucingo (ukuguguleka kusuka ku-steam yesivinini esiphezulu) esihlalweni kungabangela ukuvuza. Uma isiqalile, iyashesha. Ngezinye izikhathi, ukulungisa akuyona i-valve entsha kodwa ukuklama kabusha—mhlawumbe ukuya kuvalvu yokuhlola yesitayela se-nozzle ekwazi ukumelana nalolo hlobo oluthile lokuguguleka.
I-Special Sheet iyindawo yokuqala, hhayi iVangeli
Ekugcineni, igama mayelana nokucaciswa. Isigaba sokucindezela kwe-ANSI (isb., Isigaba 150, 300) simayelana nomzimba oqukethe ingcindezi. Ayisho lutho mayelana nekhono lomshini wokuvala lokusingatha isivinini sokugeleza noma ukukhathala okujikelezayo. Udinga ukubheka idatha yomkhiqizi ukuze uthole isivinini esiphezulu esivumelekile kanye nokwehla kwengcindezi encane ukuze uvule ngokugcwele. Lezi izinombolo ezikungenisa ebholeni.
Ungalokothi ucabange ukuthi insimbi engagqwali yanele. Cacisa ibanga: CF8M, Duplex 2205, Alloy 20. Umehluko wezindleko nokusebenza mkhulu kakhulu. Ngohlelo lokusebenza lwangokwezifiso noma lwevolumu ephansi, kulapho ingxoxo yezobuchwepheshe nozakwenu wokukhiqiza ibalulekile. Udinga ukudlulisa izimo zesevisi-uketshezi, izinga lokushisa, ingcindezi, imvamisa yomjikelezo-ukuze bakwazi ukweluleka ngendlela engcono kakhulu yokuphonsa (ukutshala imali ngemizimba eyinkimbinkimbi, enemininingwane emincane; ukubunjwa kwegobolondo ukugijima okukhudlwana komumo othize obunzima) kanye nendlela yokwenza imishini.
Ekugcineni, ukukhetha i-valve yokuhlola efanele kuwumsebenzi wokuguquguquka kwesistimu esetshenziswayo kanye nesayensi yezinto. Imayelana nokulindela ukuthi izoziphatha kanjani hhayi elebhu yokuhlola, kodwa esimweni sangempela esinomsindo, esidlidlizayo, sokuhamba ngebhayisikili okushisayo kwesitshalo sakho. Ukukhetha okulungile akubonakali-kusebenza iminyaka. Engalungile izimemezela yona, ebiza kakhulu futhi evame kakhulu.
