Wuraren masana'antu ba sa buƙatar magoya baya mai ƙarfi - suna buƙatar iska mai hankali. Lokacin da masu aiki a cikin mahakar ma'adinan kwal, masana'antar sinadarai, ko dakunan tukunyar jirgi suna kokawa game da hayaniya da ke lalata sadarwa - ko kuma lokacin da ƙungiyoyin kulawa suka ba da rahoton lalacewa da wuri daga girgiza - tushen tushen ba shi da wuya "iska mai yawa." Yana da yawa ƙwaƙƙwaran injiniya mara ƙarancin hayaniya fan haɗin kai: madaidaicin matsi na matsa lamba, marasa daidaituwa, rotors, ko gidaje waɗanda ke ƙara sautin murya maimakon damping.
Mun gwada sama da raka'a 47 axial da centrifugal a cikin masana'antar wutar lantarki guda uku a Shandong-kowanne yana da'awar "aiki shiru." 11 kawai ya hadu da iyakokin ikon sauti na ISO 5801 a cikakken kaya. Sauran sun wuce 82 dB(A) a mita 1-ba a yarda da su kusa da bangarori masu sarrafawa ko na sa'o'i 8 ba. Ƙarƙashin ƙaramar amo fan wasan kwaikwayo na duniyar gaske ba a bayyana ta da'awar decibel na kasida ba. Ana auna shi a cikin rage gajiyar ma'aikaci, ɗaukar tsawon rai, da kuma ceton kuzari lokacin da fan ɗin baya yaƙi da kansa.
Abin da ke Sa Fan Haƙiƙa Ƙarƙashin Surutu — Bayan Lakabin
Masoyan ƙaramar amo na gaske yana farawa da horon motsa jiki-ba kawai jinkirin RPM ba. Abubuwan ƙidayar ruwan wukake: 7-blade impellers a kan babban matsa lamba centrifugals yanke tonal amo da 6-9 dB da 5-blade daidai. Amma Geometry na ruwa kadai ya gaza ba tare da ingantaccen masana'anta ba. Mun sami 0.08 mm runout a cikin 9-19 jerin masu gasa impeller ya haifar da karu 12 dB a 1,750 Hz - kai tsaye mai mamaye mitocin magana na ɗan adam. Wannan shine dalilin da ya sa daidaitawa mai ƙarfi zuwa G2.5 (a kowace ISO 1940-1) ba zaɓi bane. Ba abin tattaunawa ba ne.
Tsarin yana watsa amo shima. Siraran ma'auni na ma'auni suna ƙara kama da ganguna. Bayanan filin mu yana nuna gidaje-fan titanium suna rage watsawa ta hanyar 40% tare da daidaitaccen ƙarfe na carbon-ko da madaidaicin iska. Amma titanium ba koyaushe ake buƙata ba. Ƙaƙƙarfan ƙira mai bango biyu tare da takura-layi damping a cikin tsaka-tsakin ƙira yana ba da haɓaka 9-11 dB(A) a rabin farashin.
Kuskuren shigarwa suna sabotage har ma da mafi kyawun ƙira. Hawan rufin axial fan kai tsaye zuwa purlins masu nauyi? Wannan yana juya dukan rufin zuwa allon sauti. Mun ƙididdige matakan da aka keɓe na roba-kuma muna tabbatar da su tare da karatun accelerometer yayin ƙaddamarwa. Idan rawar jiki ya wuce 4.5 mm/s RMS a wurin ɗaukar gidaje, muna sake kimanta tsarin gaba ɗaya. Ba fanka ba. The dubawa.
Amfanin Makamashi Ba a Sadaukar da shi ba-An Ƙarfafa shi
Wasu suna ɗauka ƙaramar amo tana nufin ƙaramin ƙarfi. Ba daidai ba. Mai fan ɗin da bai dace da shi ba yana gudanar da inganci 62% yayin da yake kururuwa a 88 dB(A). Matsakaicin ƙaramar amo mai dacewa da inganci ya kai kashi 81% a 67 dB(A) -saboda yana aiki kusa da kololuwar yanayin iska, ba shakewa ko kayatarwa ba.
Ɗauki jerin fashe-fashe na FBD fan na iska na gida. Ƙirar sa mai jujjuyawar matakai biyu tana motsa 32,000 m³/h a matsa lamba na 3,200 Pa - amma yana jan 18% ƙasa da halin yanzu fiye da daidaitattun matakai guda ɗaya a wurin aiki iri ɗaya. Me yasa? Rage asarar juzu'i tsakanin matakai yana yanke ja mai jawo tashin hankali. Karancin tashin hankali yana nufin ƙarancin zafi, ƙarancin hayaniya, da ƙarancin buƙatar kW a kowace 1,000 m³/h.
Muna bin wannan a ainihin lokacin. Wata masana'antar siminti ta sake gyara magoya bayan farko na tukunyar jirgi 9-19 tare da bambance-bambancen surutu. Ajiye makamashi na shekara: 1.2 GWh. Rage amo a tashoshin mai aiki: 14 dB(A). Lokacin dawowa: watanni 11-ba daga tallace-tallace na "kwanciyar hankali" ba, amma daga fa'idodin aerodynamic mai aunawa da rage asarar injiniyoyi.
Keɓancewa Shine Inda Daidaitaccen Katalogi Ya Kasa
"Ƙarancin amo" yana nufin kome ba tare da mahallin ba. Mai shayar da hayaki a cikin rami dole ne ya yi shuru *yayin da yake tsayayya da hawan gas 400°C. Mai son lalatawa yana buƙatar juriya na lalata *da* aikin sub-70 dB(A) a cikin hazo mai ɗauke da chloride. Takaddun ƙayyadaddun ƙayyadaddun bayanai sun faɗi a nan.
Abin da ya sa haɗin gwiwar masana'anta ya shafi masana'anta. Lokacin da abokin ciniki ya buƙaci fan titanium don mahalli na H₂S mai tsanani - kuma ya buƙaci ≤65 dB (A) a mita 3 - ba mu samo sassa ba. Mun yi injin daskarewa a cikin gida, mun walda gidaje tare da goyan bayan argon, amfani da belin yumbu mai rufi, da ingantacciyar fitowar sauti akan injin gwajin mu na anechoic. Jimlar lokacin jagora: makonni 14. Babu sasantawa kan hayaniya, amincin kayan abu, ko bayarwa.
Maɓalli na keɓancewa da muke amfani da su kullun:
Haɓaka share ruwan ruwa ga takamaiman duct tsarin impedance Acoustic rufi jeri an daidaita shi zuwa manyan makada na mitar-ba rufewar bargo ba Ƙaddamar da Motoci warewa electromagnetic hum daga inji vibration Hanyar tabbatar da fashewar fashewa Daidaitawa da IEC 60079-0/1/31 - ba kawai abubuwan rufewa ba. Zaɓan Masoyan Ƙarƙashin Hayan ku na gaba: Abubuwan Tambayoyi masu Aiki
Kafin kayyade, yi waɗannan tambayoyin—sannan a tabbatar da amsoshi tare da rahotannin gwaji, ba ƙasidu ba:
Shin ana auna ƙarfin sauti ta ISO 5801-ko kawai sautin sauti a nesa ɗaya? Shin madaidaicin tsarin aiki yana nuna kololuwa>75% a wurin aiki da ake buƙata? Shin ɗaukar lissafin rayuwa ya dogara ne akan ainihin nauyin L10-ba max RPM ba? Za su iya samar da ingantacciyar NVH na ɓangare na uku (amo-vibration-harshness) don daidaitaccen tsarin ku? A Zibo Hongcheng Fan Co., Ltd., kowane mai ƙarancin hayaniya yana jigilar kaya tare da takardar shaidar gwajin sauti da cikakken taswirar aiki-ba madaidaicin bayanai ɗaya kaɗai ba. Muna gina inda kwararar iska ta hadu da lissafi: 9,000 m² na ingantattun injina, daidaitawa mai ƙarfi, da gwaji na gaske a ƙarƙashin yanayin masana'antu da aka kwaikwayi. Domin sanyaya shiru bai kamata ya zama abin alatu ba. Ya kamata ya zama ginshiƙi don aiki mai aminci, inganci, da dorewa.
Ga injiniyoyin da suka auna nasara a decibels da aka kaucewa da kilowatts da aka ajiye-ba kawai mita cubic sun motsa ba-ƙarni na gaba na fasaha mai ƙarancin amo ya riga ya gudana. Ba a cikin labs. A cikin ma'adinai. A cikin gidajen dafa abinci. A cikin yankunan da ke tattare da sinadarai. Inda ba a yi alkawarin dogaro ba. An tabbatar.
