Buku Lotsogolera Kusankha Pumpu ya Hydraulic: Mndandanda wa Masitepe 8 ndi Mafomula Okulitsa

Pampu ya PV2R yotsatizana ya vane ya machitidwe a hydraulic a mafakitale” style=”width:100%;max-width:800px;height:auto;border-radius:6px;m'mphepete:0 0 28px;” />

Fakitale yathu ya Ningbo yapanga mapampu opitilira 80,000 a vane pachaka, ndipo kusankha kulikonse kumayamba ndi njira ziwiri zomwe gulu lathu la mainjiniya limagwiritsa ntchito tsiku lililonse.

Mu fakitale yathu yopanga zinthu ku Ningbo, timayendetsa mizere 6 yopanga zinthu zomwe zimapanga mapampu opitilira 80,000 pachaka. Gulu lathu la mainjiniya lakonza zinthu zambirimbiri zomwe ogula amafuna, ndipo njira yopangira kukula kwake pansipa ndiyo poyambira kusankha kulikonse komwe timapanga. Timagawana pano kuti ogula athe kudzitsimikizira okha zomwe akufuna asanatitumizire RFQ.

Mafomula Okulitsa: Kuwerengera Kuthamanga kwa Mayendedwe ndi Mphamvu

Gulu lathu la mainjiniya ku fakitale yathu yopanga zinthu yokhala ndi mizere 6 yopangira zinthu limayamba nthawi iliyonsekalozera wosankha pampu ya hydraulickukambirana ndi ma formula awiri. Popeza ma formula awa amatsimikizira kusuntha kwa pampu, kuthamanga kwa ntchito, ndi mphamvu ya injini zomwe zidzafotokoze momwe makina anu amagwirira ntchito, kuwayika pamalo oyenera pamlingo woyenera kumateteza zolakwika zosakwanira kukula ndi kukula kwambiri zomwe timaziwona nthawi zambiri mu ma specifications omwe amaperekedwa ndi ogula.

Fomula yoyamba imawerengera pampu yofunikirakuchuluka kwa madzi:

Q (L/min) = V (cm³) × N (ma stroke/min) ÷ 1000

Pamene Q ndi kayendedwe kofunikira mu malita pamphindi, V ndi kusuntha kwa silinda kapena mota mu masentimita a cubic, ndipo N ndi chiwerengero cha ma stroke pamphindi (pa ma silinda) kapena liwiro lozungulira mu RPM (pa ma hydraulic motors). Pa makina omwe ali ndi ma actuator angapo omwe amagwira ntchito nthawi imodzi, sonkhanitsani zofunikira za kayendedwe kake ndikuwonjezera 10 mpaka 20 peresenti ya kutayika kwa makina - kutayikira kwamkati kudutsa ma valve clearances, kudutsa kwa madzi kudzera mu ma valve ochepetsa kupanikizika, ndi kufalikira kwa kutentha kwa madzi ogwirira ntchito. Deta yathu yopangira kuchokera ku kutulutsa kwathu kwa pampu kwapachaka kwa 80,000+ ikuwonetsa kuti kusatchula bwino kutayika kwa makina ndi oposa 15 peresenti ndiye chifukwa chachikulu cha pafupifupi 30 peresenti ya madandaulo okhudza magwiridwe antchito.

Fomula yachiwiri imawerengera mphamvu yoyendetsera yofunikira:

P (kW) = Q (L/min) × p (MPa) ÷ 60

Pamene P ndi mphamvu ya injini yofunikira mu kilowatts, Q ndi liwiro la kuyenda, ndipo p ndi kuthamanga kwa ntchito mu megapascals. Fomula iyi imatenga mphamvu ya pampu ya 100 peresenti - m'machitidwe, mapampu athu a vane amakwaniritsa mphamvu ya volumetric ya 85 mpaka 94 peresenti kutengera kuthamanga ndi liwiro, kotero mphamvu yeniyeni yofunikira imagawidwa ndi P ndi mphamvu. Pa pampu yomwe imapereka 80 L/min pa 14 MPa yokhala ndi mphamvu ya 90 peresenti: P = 80 × 14 ÷ 60 ÷ 0.90 = 20.7 kW. Gulu lathu la mainjiniya limapereka ma curve oyendetsera bwino pa mtundu uliwonse wa pampu, wojambulidwa motsutsana ndi kuthamanga ndi liwiro, kuti ogula athe kuwerengera mphamvu yeniyeni yofunikira pamalo awo ogwirira ntchito.

Zomwe takumana nazo popanga zinthu zosiyanasiyana m'mizere isanu ndi umodzi ya zinthu zimatipatsa chithunzi chomveka bwino cha ukadaulo wa pampu womwe ukugwirizana ndi ntchito iti. Nayi kufananiza kwathu.

Vane vs Gear vs Piston: Tebulo Loyerekeza

Ukadaulo wa mapampu atatu omwe timagwira nawo ntchito —valavu, giya, ndi pisitoni — chilichonse chili ndi mawonekedwe ogwirira ntchito komwe zimayang'anira kwambiri. Chifukwa fakitale yathu yopanga imapanga mapampu a vane okha (okhala ndi mizere 6 yopangira ndi mphamvu zopitilira mayunitsi 80,000 pachaka), tili ndi ukadaulo wozama pakufananiza zofunikira za mapampu a vane ndi ntchito. Nayi tebulo lathu lofananizira:

Vane Pump (ntchito yathu yapadera):Kupanikizika kwa mpweya kuyambira 7 mpaka 21 MPa. Kuthamanga kwa mpweya kuyambira 5 mpaka 450 L/min. Phokoso kuyambira 62 mpaka 68 dB(A) pa 1500 RPM.Kugwiritsa ntchito bwino kwa voliyumu85 mpaka 94 peresenti. Kulekerera kuipitsidwa pang'ono (ISO 4406kalasi 18/16/13). Mtengo wapakati. Ntchito zodziwika bwino: kupanga jekeseni, makina osindikizira, chiwongolero cha m'madzi, ma hydraulic a mafakitale.

Pampu ya Zida:Kupanikizika kuyambira 3 mpaka 25 MPa (kunja), 3 mpaka 10 MPa (mkati). Kuyenda kwa madzi kuyambira 1 mpaka 300 L/min. Phokoso kuyambira 70 mpaka 80 dB(A). Mphamvu ya voliyumu kuyambira 75 mpaka 90 peresenti. Kupirira kuipitsidwa ndi kwakukulu. Mtengo wotsika. Kugwiritsa ntchito kwachizolowezi: zida zoyendera, makina opaka mafuta, ma circuits osavuta.

Pampu ya Pisitoni:Kupanikizika kwa mpweya ndi 21 mpaka 70 MPa. Kuthamanga kwa mpweya ndi 5 mpaka 1000 L/min. Phokoso ndi 75 mpaka 90 dB(A). Mphamvu ya voliyumu ndi 90 mpaka 98 peresenti. Kulekerera kuipitsidwa ndi kochepa (ISO 4406 kalasi 16/14/11 kapena kupitirira apo). Mtengo ndi wokwera. Ntchito zodziwika bwino: makina osindikizira amphamvu, kupanga jakisoni (wapamwamba), zida zoyesera, ndi malo opumira.

Kusankha kumayamba ndi zofunikira pa kuthamanga ndi kuyenda kwa madzi. Ngati makina anu akugwira ntchito pansi pa 21 MPa ndipo safuna mphamvu yapamwamba kwambiri, apompu ya vaneimapereka phokoso labwino kwambiri, magwiridwe antchito, mtengo, komanso kulekerera kuipitsidwa. Mndandanda wathu wa PV2R umakhudza ntchito zambiri za pampu ya vane ya mafakitale, yokhala ndi makonzedwe a pampu imodzi ndi iwiri komanso ma code osunthira pakati pa 6 mpaka 237 cm³/rev.

Gulu lathu la mainjiniya limagwiritsa ntchito mndandanda wa masitepe 8 uwu pa zomwe wogula aliyense amanena. Chifukwa chakuti sitepe iliyonse imapeza cholakwika chosiyana, timayendetsa zonse zisanu ndi zitatu tisanatchule mawu.

Mndandanda Wosankha Pampu wa Masitepe 8

Gulu lathu la mainjiniya limagwiritsa ntchito mndandanda wa masitepe 8 uwu poyesa zofunikira za ogula. Chifukwa sitepe iliyonse imapeza cholakwika cha mtundu wina wa zofunikira, kudumpha sitepe iliyonse kumawonjezera mwayi woti malo awonongeke, zopempha za chitsimikizo, kapena kusintha pampu msanga.

Gawo 1: Fotokozani kuchuluka kwa madzi komwe kukufunika.Gwiritsani ntchito fomula ya Q = V × N ÷ 1000 kuti muwerengere kayendedwe ka mfundo, kenako onjezerani 10 mpaka 20 peresenti ya kutayika kwa makina. Mndandanda wathu wa PV2R umakhudza ma code oyendera kuyambira 6 mpaka 237 cm³/rev — gwirizanitsani code yosunthira ndi kayendedwe kanu kowerengedwa pa liwiro la injini yomwe mukufuna.

Gawo 2: Fotokozani kuthamanga kwa ntchito.Dziwani kuthamanga kwakukulu kogwira ntchito kosalekeza komanso kuthamanga kwapamwamba (kosinthasintha). Mapampu athu a vane amayesedwa kuti azitha kuthamanga kosalekeza mpaka 17.5 MPa (PV2R series) kapena 21 MPa (ABTmndandanda), ndi kupsinjika kwakukulu kwa 20 mpaka 25 peresenti kuposa kosalekeza. Tchulani mitengo yonse iwiri mu oda yanu yogulira.

Gawo 3: Sankhani mtundu wa pampu.Gwiritsani ntchito tebulo lathu loyerekeza pamwambapa. Pa ntchito zambiri zamafakitale zomwe zimagwira ntchito pa 7 mpaka 21 MPa, kuchuluka kwa mapampu athu a vane kumapereka mulingo woyenera. Pa ntchito zopitilira 21 MPa, ganizirani mapampu a pistoni. Pa ntchito zosavuta komanso zotsika mtengo zosakwana 10 MPa, mapampu a giya angakhale otsika mtengo.

Gawo 4: Yang'anani liwiro la galimoto.Mapampu athu a vane amagwira ntchito bwino kwambiri pa 600 mpaka 1800 RPM. Kugwira ntchito pansi pa 600 RPM kumachepetsa mphamvu ya volumetric (mphamvu yocheperako ya centrifugal yotsekera ma vane motsutsana ndi mphete ya kamera). Kugwira ntchito pamwamba pa 1800 RPM kumathandizira kuwonongeka kwa nsonga ya vane ndikuwonjezera phokoso. Gwirizanitsani liwiro la pampu ndi injini yanu kapena liwiro la galimoto kudzera mu kulumikizana mwachindunji kapena kuchepetsa lamba/giya.

Gawo 5: Tsimikizirani kuti madzi akugwirizana.Mapampu athu odziwika bwino a vane amapangidwira madzi a hydraulic okhala ndi mchere (ISO VG 32, 46, kapena 68). Pa madzi opangidwa, madzi-glycol, kapena madzi owonongeka ndi zinthu zina, tchulani mtundu wa madzi omwe mukufuna — timapereka zinthu zomatira zogwirizana (FKMzamadzimadzi opangidwa,EPDMza madzi-glycol) ndi zipangizo za vane za media yosakhala ya muyezo.

Gawo 6: Werengani mphamvu ya drive.Gwiritsani ntchito P = Q × p ÷ 60 ÷ η (komwe η ndiye mphamvu ya pampu kuchokera ku ma curve athu a catalog). Sankhani mota yokhala ndi mphamvu ya 10 mpaka 15 peresenti kuposa mtengo wowerengedwa kuti igwire ntchito yodzaza ndi zinthu zosakhalitsa komanso zinthu zozizira.

Gawo 7: Tchulani kuyika ndi kuyika.Mapampu athu amapezeka mu flangekuyika(SAE A, B, C, D), kuyika mapazi, ndi kukonza kwa through-drive. Ma doko olumikizira amatsatira miyezo ya SAE ndi BSPP. Tchulani mtundu wa kuyika, njira yozungulira shaft (CW, CCW, kapena reversible), ndi kukula kwa ma doko mu dongosolo lanu.

Gawo 8: Fotokozani nthawi yogwirira ntchito ndi malo ogwirira ntchito.Tchulani maola ogwirira ntchito omwe akuyembekezeka patsiku, kuchuluka kwa nthawi yogwirira ntchito pa ola limodzi, kutentha komwe kumazungulira, ndi zinthu zilizonse zachilengedwe (za m'madzi, zakunja, chipinda choyera, malo oopsa). Mapampu athu ovomerezeka a CCS/DNV/ABS/BV/LR amaphimba ntchito za m'madzi; mapampu athu okhazikika amaphimba malo ambiri a fakitale.

Deta yathu yochotsera kutentha imachokera ku mayeso athu a labotale pa mitundu yonse ya mapampu. Popeza kutentha kumakhudza makina onse a hydraulic, mainjiniya athu amagwiritsa ntchito kusinthaku pa chilichonse chomwe chimagwiritsidwa ntchito mosalekeza.

Kuchepa kwa Kupanikizika ndi Kutentha

Kugwira ntchito kwa pampu ya hydraulic kumadalira kutentha chifukwa kukhuthala kwa madzi kumatsika pamene kutentha kukukwera, zomwe zimawonjezera kutuluka kwa madzi mkati ndikuchepetsa mphamvu ya volumetric. Njira yathu yodziwika bwino yochepetsera kuthamanga kwa madzi: kuchepetsa kuthamanga kosalekeza ndi 10 peresenti pa madigiri 15 Celsius aliwonse pamwamba pa kutentha koyenera kwa madigiri 50. Pa pampu yomwe ili ndi 17.5 MPa pa madigiri 50, kuthamanga kwa madzi komwe kuli ndi 65 madigiri ndi 15.75 MPa, pa madigiri 80 ndi 14 MPa, ndipo pa madigiri 95 ndi 12.25 MPa.

Mapampu athu a T6/T7 series vane amagwiritsa ntchito kapangidwe ka bilabian vane komwe kamasunga mphamvu yotsekera pa kutentha kwakukulu kuposa ma vane achizolowezi a single-lip. Chifukwa kapangidwe ka bilabian kamapanga malo awiri otsekera pa vane, kutsika kwa kuthamanga pa malo aliwonse otsekera kumachepetsedwa ndi theka, zomwe zimachepetsa kutuluka kwa madzi ngakhale pamene kukhuthala kuli kochepa. Mu mayeso athu otentha kwambiri (madigiri 80 mosalekeza, 14 MPa), mndandanda wa T7B umasunga mphamvu yogwira ntchito yoposa 88 peresenti - 3 mpaka 5 peresenti kuposa mapangidwe a single-lip vane pamikhalidwe yomweyi.

Kwa ogula omwe amagwira ntchito m'malo ozizira (osakwana madigiri Celsius 0), mapampu athu a vane ali ndi mawonekedwe oyambira otsika kutentha: mphete ya kamera ndi zololera za vane zimapangidwa kuti zigwirizane ndi kukhuthala kwakukulu kwa madzi ozizira popanda kumangirira, zomwe zimapangitsa kuti makina oyambira odalirika azikhala ndi madigiri osachepera 20 ndi madzi a ISO VG 32. Gulu lathu la mainjiniya limapereka ma curve a torque ozizira pa mtundu uliwonse wa pampu, zomwe zimathandiza ogula kuti azikulitsa bwino ma drive motor awo kuti agwirizane ndi nyengo yozizira.

Njira Zabwino Zokhazikitsira Ma Vane Pumps

Gulu lathu la mainjiniya lalemba zolakwika zomwe zimachitika kawirikawiri zomwe zimapangitsa kuti pampu isagwire ntchito msanga. Chifukwa chakuti ubwino wa pampu umakhudza mwachindunji moyo wa pampu — cholumikizira cholakwika chingachepetse moyo wa pampu ndi 50 peresenti — timapereka malangizo okhazikitsa pa pampu iliyonse yotumizidwa.

Kulinganiza kwa shaft.Mapampu athu a vane amafuna kulumikizana mkati mwa 0.05 mm total indicated runout (TIR) ​​pa coupling interface. Chifukwa kusalingana bwino kumabweretsa katundu wonyamula ma radial omwe amafulumizitsa kuwonongeka, tikupangira zida zolumikizira laser pamakina opitilira 7.5 kW. Pamakina ang'onoang'ono, kulumikizana kwa dial indicator ndikovomerezeka ngati kuchitidwa mosamala.

Kapangidwe ka mzere wokoka.Mapampu athu amafuna liwiro la chingwe chokoka pansi pa 1.5 mita pa sekondi imodzi ndi chokweza chokoka pansi pa 0.5 mita (mutu wabwino ndi wabwino).kupweteka kwa m'mimba— kupangika ndi kugwa kwa thovu la nthunzi mu mzere wokoka — kumawononga nsonga za vane ndi malo ozungulira kamera mkati mwa maola ochepa, gulu lathu lopanga limatchula kukula kwa mzere wokoka wocheperako ndi 25 peresenti kuposa doko lolowera pampu. Gulu lathu la mainjiniya limapereka mawerengedwe a kukula kwa mzere wokoka pa chitsanzo chilichonse cha pampu.

Ukhondo wamadzimadzi.Mapampu athu a vane amavomereza ukhondo wamadzimadzi wa ISO 4406 kalasi 18/16/13, koma tikupangira kalasi 16/14/11 kuti akhale ndi nthawi yayitali ya vane komanso yonyamula. Popeza kuipitsidwa ndiye chifukwa chachikulu cha kulephera kwa makina a hydraulic padziko lonse lapansi, timasankha fyuluta yobwerera ya 10-micron ngati muyezo komanso fyuluta yothamanga ya 3-micron yogwiritsira ntchito mphamvu yoposa 14 MPa. Kapangidwe kathu ka cartridge kit kamalola kuti ma vane oipitsidwa asinthidwe popanda kuchotsa pampu mumakina.

Chithandizo cha Pambuyo pa Market ndi Kusintha kwa Cartridge Kit

Chitsanzo chathu chothandizira pambuyo pa msika chapangidwa motsatira mfundo yakuti mapampu a vane omwe amagwira ntchito mosalekeza adzafunika kusinthidwa kwa zigawo zamkati. Chifukwa kapangidwe kathu ka cartridge kit kamalekanitsa zinthu zomwe zawonongeka (ma vane, cam ring, mbale zam'mbali) ndi nyumba ya pampu ndi shaft, njira yosinthira imatenga ola limodzi - poyerekeza ndi maola 4 mpaka 6 kuti pakhale kusintha kwathunthu kwa pampu.

Zipangizo zathu za makatiriji zimatumizidwa kale ndipo zimayesedwa kale kuchokera ku fakitale yathu ya Ningbo, zokonzeka kuyikidwa. Popeza timasunga makatiriji a mitundu yonse ya mapampu ogwira ntchito, nthawi yathu yotumizira zida zosinthira ndi masiku atatu mpaka asanu ndi awiri ogwira ntchito pazinthu zomwe zilipo komanso masiku 15 mpaka 25 kuti zikonzedwe mwamakonda. Chitsimikizo chathu cha miyezi 12 chimaphimba zida za makatiriji pansi pa malamulo omwewo monga mapampu athunthu - zolakwika zopangira pansi pa mikhalidwe yoyenera yogwirira ntchito.

Kwa ogula omwe amagwiritsa ntchito zida zambiri za hydraulic, timapereka pulogalamu yodzitetezera: kutengera nthawi yanu yogwirira ntchito komanso nthawi yogwira ntchito, gulu lathu la mainjiniya limawerengera kuchuluka kwa kuvala kwa vane komwe kukuyembekezeka ndipo limalimbikitsa nthawi yosinthira zida za cartridge. Chifukwa kusintha zida za cartridge musanagwe kumawononga ndalama zochepa poyerekeza ndi nthawi yogwira ntchito yomwe imachitika chifukwa cha kulephera kwa pampu kosayembekezereka, pulogalamu yathu yokonza imachepetsa ndalama zonse za umwini ndi 20 mpaka 30 peresenti pazaka 5.

Gulu lathu la mainjiniya ku Ningbo lilipo kuti likambirane zofunikira pakugwiritsa ntchito kwanu ndikupangira chitsanzo chabwino kwambiri cha pampu ya vane, code yosunthira, ndi kasinthidwe ka makina anu a hydraulic. Lumikizanani nafe kudzera mu pulogalamu yathu.tsamba lothandizira uinjiniyakuti mupeze lipoti losankha pampu lokonzedwa mwamakonda.