Paunonzwa 'impeller', vazhinji vanofunga kuti ingori fan blade mupombi kana musanganiswa. Ndiyo yekutanga kusanzwisisa. Muchokwadi, iyo geometry yayo - iyo blade angle, kupeta, upamhi hwekubuda - inoraira zvese kubva mukushanda kwehurongwa kusvika kuhupenyu hwegungano rese. Ndakaona mapurojekiti akawandisa uko iyo impeller yaive yekufungidzira, ichitungamira kune cavitation ruzha runonzwika senge matombo mupombi kana pombi inofamba ichiremerwa mukati memwedzi. Iwo mwoyo, kwete chishongedzo.
Dhiyabhorosi ari muKukanda Details
Kuwana chimiro chakanaka kunotanga ne mold. Kune ma impeller akaoma, kunyanya akavharwa kana semi-akavhurika marudzi ane tight clearances, kukanda mari kazhinji ndiyo yega nzira inoshanda. Wakisi patani kuperera ndizvo zvese. Chikanganiso chidiki mukufa, kusawirirana kudiki, kunodzokororwa mune imwe neimwe yekukandira. Ndinorangarira bhechi repombi yemugungwa uko mipendero yemashizha yaigara yakakora kupfuura spec. Izvo hazvina kutadza kuongororwa pazviyero, asi curve yekuita yakanga yadzimwa neinosvika 15%. Mupari wemhosva? Wax shrinkage haina kubhadharwa zvizere mukugadzira kufa. Ichi chidzidzo chinodhura chakadzidzwa kwete pabhodhi rekudhirowa, asi mushure mekunge mazana ezvimedu zvadirwa.
Apa ndipo panoratidza chiitiko chemuvambi. Kambani yakadai Qingdao Qiangsenyuan Technology Co., Ltd.(QSY), nemakumi emakore emugoko uye kuisa mari, vaizowana izvi. Vanogona kunge vaona zvese shrinkage uye kukanganisa mamiriro mubhuku. Kushanda nesimbi isina tsvina kana nickel-based alloys ye corrosive duty inowedzera imwe layer; kuyerera kwesimbi uye kutonhora mitengo kwakasiyana. Iwe haugone kungoshandisa kabhoni simbi maitiro. Kushanda kwavo kwenguva refu kunoratidza kuti vakagadzirisa matekiniki avo pazvinhu zvese, izvo zvakakosha.
Dzimwe nguva, nyaya haisi yekukanda asi kuchenesa. Iyo as-cast surface munzvimbo yevolute rurimi kana kune blade pressure side inoda kunyatsokuya. Kupfuura-kuya imwe nzvimbo, uye iwe unoshandura iyo hydraulic mbiri. Ndakasimbirira pakushandisa matemplate ekukuya madhairekitori ezvekupokana, ayo mamwe zvitoro anoona achinetesa. Asi ndizvozvo kana kuti njodzi yeharmonic vibration gare gare.
Machining: Apo Dzidziso Inosangana neChuck
Kunyangwe kukanda kwakaringana kunoda machining chaiwo. The bore for the shaft, hub yakatarisana, uye zvakanyanya kutsoropodza, iyo ine simba kuenzanisa. Apa ndipo apo CNC inoratidza kukosha kwayo. Unoda muchina unokwanisa kubata kucheka kwakakanganiswa kwemablades pasina chatter. Ndakashanda pane kaviri-kusveta impeller purojekiti uko shopu yekutanga yakaedza kumichina nzvimbo dzeblade neyakajairwa 3-axis maitiro. Kupedza kwacho kwaityisa, uye kusara kwacho kwaityisa—kwaida kuchera kwakanyanyisa.
Iyo yakakodzera multi-axis setup iri nani. Inokubvumira kuti uswedere kune blade contours zvakananga. The technical details on https://www.tsingtaocnc.com simbisa kugona kwavo kweCNC, ndizvo chaizvo zvinodiwa. Kune yepamusoro-speed pombi impeller, chiyero chechiyero (seG2.5 kana G1.0) chinotsanangurwa. Kuwana izvozvo hakusi kungobvisa uremu chete; ndezvekutanga kufanana kubva mukugadzira. Kana iyo CNC ikashanda pahubhu uye mashizha ari symmetric, kururamisa kwekuenzanisa kudiki uye hakukanganise kutendeseka kwechimiro.
Isu takambotora mamwe ma compressor impellers mune cobalt-based alloy. Machina chaive chikara. Izvo zvinhu zvinoshanda-zvinoomesa nekukurumidza. Chitoro chaifanira kugadzirisa mafeed, kumhanya, uye kushandisa chaiwo maturusi machira epakati pebasa. Kwakanga kusiri kushanda kwebhuku; yaingogara ichikwenenzverwa zvichibva pakuonekwa kwezvishandiso. Chitoro chinongoita michina mild steel chingadai chaparadza zvikamu.
Sarudzo Yezvinhu Haisi Yekungoora
Wese munhu anotora 316 isina tsvina yemvura yegungwa. Kutanga kwakanaka. Asi kune yakakwirira-kumhanya maapplication, senge mu-multi-stage booster pombi, simba rezvinhu uye kuramba kuneta kunove kwakanyanya. A cast iron impeller inogona kunge yakanaka pa1800 rpm, asi pa3600 rpm, centrifugal stresses inopetwa kana. Ndipo paunotarisa duplex isina tsvina kana kunyange nickel alloys seInconel 725.
Ndinoyeuka purojekiti yekudzorera apo takatsiva mapombi esimbi nesimbi yegiredhi yepamusoro-soro papombi ine tsvina, tichifunga kuti yakasimba. Yakanga iri, asi yakanga yakanyanya brittle. Iko kukanganiswa kubva kune yakasimba particles kwakakonzera micro-kutsemuka pamudzi weblade, zvichikonzera kutadza kukuru. Takadzokera shure ndokushandisa martensitic stainless yakaoma—yakasimba, kwete chete kuoma. QSYKutaurwa kwekushanda nemaaloyi akakosha senge cobalt uye nickel-based ndiyo yakakosha pano. Zvinoreva kuti vanonzwisisa aya mashandisirwo-chaiyo zvinhu mechanics, kwete chete chemistry.
Dzimwe nguva sarudzo isiriyo ndeyekuchengetedza mari pazvinhu pachayo, asi inoregeredza mutengo wakazara. Yakachipa kabhoni simbi impeller munzvimbo ine acid ine hunyoro inogona kugara gore. The downtime and replacement labour inodhura zvakapetwa kagumi musiyano wezvinhu. Iri nyore maverengero ekuverenga anowanzo kupotsa.
Kubatanidzwa uye System Effect
Impeller haimboshande yega. Kuita kwayo kwakasungirirwa kune volute casing clearance, iyo yekukwevera pombi kumisikidzwa, uye kunyangwe iyo yakadzika vharafu. Iko kukanganisa kwekirasi kuisa impeller yepamusoro-soro mune yekare, yakasakara casing ine yakawedzera kubvumidzwa kwemukati. Kuwana kwekuita hakuna basa nekuti kurasikirwa kwekudzokorora kunodya zvese zvakanaka.
Takaedza izvi kamwe chete. A itsva, optimized impeller mune itsva casing yakarova 82% kunyatsoshanda. Iyo imwe chete inosevenzesa mune casing ine 0.5mm yakafara kupfeka mhete clearance (ichiri mukati meinobvumidzwa miganho yekugadziridza) yakadonha kusvika 78%. Ndiyo chaiyo-yepasi data poindi iwe yausingawane pane yakatarwa sheet. Iko kufanira, kunyanya neinotsiviwa kupfeka mhete, itsika yekuchengetedza iyo inoregeredzwa.
Imwe nyaya yehurongwa ndeye Net Positive Suction Head (NPSH). Iyo inoyevedza yakakandwa uye yakadhindwa impeller ichiri cavitate kana iyo NPSHA system yakadzikira. Ndakashevedzwa kuti nditarise kutadza kwe impeller uko mablades akanyudzwa, ndakazongoona kuti nyaya yaive yakavharika inlet sefa kana mutsara wekusveta wakadzika mamita matatu kumusoro. Mupfuri ndiye akanga abatwa, kwete honzeri.
Kukundikana seDiagnostic Tool
Iwe unodzidza zvakawanda kubva kune akakundikana impeller pane akakwana. Nzira yekutyoka inotaura nyaya. Kuneta kutsemuka kunopararira kubva pamudzi weblade? Zvingangoita resonant vibration kana chirema. Kukukurwa kweUniform pamucheto unotungamira? Cavitation. Localized pitting pane chaiwo mablades? Inogona kunge iri kuyerera kubva kugokora riri pedyo. Ini ndinochengeta mafoto ekukundikana. Ndiyo yakanakisa kudzidzisa zvinhu kuchikwata changu.
Imwe nyaya inoyeukwa yaive yemagetsi inogera kubva pahubhu. Pfungwa yekutanga yaive chikanganiso chekukanda. Metallurgical analysis yakaratidza zvinhu zvakanaka. Imwezve ongororo yakaitsvaga kusvika kune yakakwira-frequency vibration kubva pakubatanidza zvisina kurongeka izvo zvakagadzira torsional resonance chaiyo pamhepo yemhepo. Iyo gadziriso yanga isiri nyowani impeller dhizaini, asi yakaomarara kubatanidza uye chaiyo laser alignment. Iyo impeller yaive canary mumugodhi wemarasha kune yakakura mechanic nyaya.
Ichi ndicho chikonzero cheni yese yekugadzira yakakosha. A foundry uye machinist akafanana QSY iyo inopa masevhisi akasanganiswa kubva pakukanda kuenda kuCNC machining inopa mukana wekuenderana. Vanodzora zvimwe zvakasiyana. Kana kutadza kukaitika, tsinhiro yechikonzero iri nyore - hausi kubata nevatengesi vaviri vakasiyana vachipomerana maitiro. Kune yekupedzisira-mushandisi, iyo traceability yakakosha, kunyangwe isiri iyo yakachipa bhidhi nguva dzose.
Kupedzisa Pfungwa: Iyo Ecosystem
Saka, kutaura nezve a impeller hachisi chingori chikamu chimwe chete. Zviri maererano nehunyanzvi hwekukanda hunobata chinangwa chayo che hydraulic, machining anoziva kurongeka kwayo, zvinhu zvinopona nharaunda yayo yekushandisa, uye hurongwa hwahunogara mairi. Chigadzirwa chezvose zviri zviviri art nesainzi- empirical tweaks yakavakirwa patioretical curves. Iwo akanakisa anobva mukubatana pakati peinjiniya yekugadzira anoziva nzvimbo yebasa uye mugadziri wekugadzira anoziva maitiro esimbi paunoyedza kuigadzira. Kudyidzana ikoko, kwakavakwa kwemakore uye kusaverengeka kudzokororwa, ndiko kunoshandura dhirowa kuita chikamu chakavimbika chinotenderera. Hazvinakidze, asi kana zvakanaka, hurongwa hwese hunongorira.
