Subway tunnel mafeni anochengeta mhepo ichifamba kana hupenyu hunotsamira pazviri. Haisi midziyo yekuchengetedza-ndiyo mutsara wekutanga wekudzivirira kubva kune utsi, kupisa, uye muchetura buildup panguva dzenjodzi. Isu takaisa, takaedza, uye dambudziko-pfuti Subway Tunnel fan masisitimu mumapurojekiti gumi nemaviri metro muChina neSoutheast Asia. Mune imwe yekuwedzera yeBeijing, fan yakakundikana yakakonzera maminetsi makumi mana nemanomwe ekunonoka kufefetedza mhepo panguva yekuyedzerwa kudhiraivha kwemoto-nguva yakakwana yekuti CO mazinga ayambuke mazana matatu emakumi matatu emakumi emakumi emakumi mashanu ppm yekuchengetedza chikumbaridzo. Chiitiko ichocho chakagadziridza matsananguriro atinoita, kuyedza, uye kutumira mayunitsi aya.
Sei Mafeni Majairwa Achitadza Pasi pevhu
Mazhinji mafeni maindasitiri anodonha pasi pezvitima zvepasi-kwete kubva mukuremerwa, asi kubva mukusaenderana dhizaini chinangwa. Iyo general-chinangwa axial fan inogona kufamba 120,000 m³/h pa500 Pa static pressure pabepa. Asi pasi pevhu? Inotarisana ne85% humidity gore rose, mhepo ine chloride-yakazara padyo nemahombekombe egungwa, kutenheka kubva kune zvitima zvinopfuura (kusvika 12 Hz pa 0.8 mm amplitude), uye zero margin yekudonha kwemafuta. Takaona mota dzichipisa mukati memazuva makumi mapfumbamwe nekuti kirasi F yakatsanangurwa-asi ambient tunnel temps inogara ichirova 52°C panguva yekushanda kwechirimo.
Iyo chaiyo yekutadza poindi haisi kuyerera kwemhepo-iyo kuvimbika pasi pekunetseka kwakakomba. Zvitatu zvisingagone kutaurirana zvinodiwa zvinopatsanura subway-giredhi zvikamu kubva kukhathalogi stock:
- Kuputika-proof certification (GB 3836.1–2021) yenzvimbo dzine methane-prone kana bhatiri-tunnel interfaces
- Inoenderera-basa IP55+ ingress kudzivirira, ine silicone-yakavharwa mabhengi uye simbi-yesimbi fasteners
- Dynamic chiyero giredhi G2.5 kana zvirinani, yakasimbiswa pa110% yehukuru hwekushanda-kwete kungoyerwa kumhanya
Pasina ese ari matatu, magadzirirwo ekugadzirisa anoderera ne60%. Mumwe mutengi akatsiva mafeni mwedzi gumi nemana yega yega kusvika achinja kune anopoterera-anotenderera axial madhizaini ane maviri akazvimirira mahwindi. Nguva yavo itsva: 47 mwedzi.
FBD Series: Yakagadzirirwa Tunnel Realities, Kwete Lab Sheets
Iyo FBD yakatevedzana (dⅠ) inoputika-humbowo kudzvanywa-jekiseni inopesana-inotenderera axial kuyerera yemuno mhepo yekufefetera fan inogadzirisa izvo zvakajairwa tunnel mafeni anofuratira: kutungamira uye mhinduro yenguva pfupi. Yayo-matanho maviri rotor musangano-kumberi uye kumashure mapeller anotenderera akatarisana-anopa 22% yakakwirira static kunyatsoshanda pane imwechete-nhanho yakaenzana panguva imwecheteyo 1,800 Pa pressure inosimuka. Zvakanyanya kukosha, inowana kuzara kwemhepo mukati me2.3 masekonzi ekutanga. Izvo zvine basa kana kuonekwa kweutsi kuchikonzera kufefetedza kusati kwadonha kudonha pasi pemamita gumi.
Isu hatingo taura zvekufungidzira - tinozvisimbisa. Yese FBD unit inopinda:
- 48-awa yemunyu-spray test (ISO 9227) pa5% NaCl concentration
- Vibration kutsungirira pa15 g peak acceleration ye10 miriyoni kutenderera
- Thermal runaway simulation: motor windings inopisa kusvika 180 ° C, ndokubva yatonhodzwa nokukurumidza kusvika -20 ° C - yakadzokororwa ka200.
Izvi hazvisi pamusoro-engineering. Inofananidza hardware kune envelopu yekushanda. Kana moto wemukoto ukarova 600°C, mafeni ari pedyo anofanirwa kurarama nekupisa kwakarebesa kuti abvise nzira dzekutiza nadzo. FBD zvikamu zvakapfuura makumi mapfumbamwe-maminetsi ekuratidzwa bvunzo pa750 ° C pamusoro tembiricha pasina deformation.
Kugadzirisa Haisi Sarudzo-Inodiwa neFizikisi
"Kure-pasherufu" haipo kune mafani e subway tunnel. Tunnel dhayamita, gradient, frequency yechitima, uye moto mutoro profile inoraira fan geometry, kwete mabhurocha ekushambadzira. Mugero we 5.8 m dhayamita une 3% gradient unoda akasiyana blade twist uye hub reshiyo pane 4.2 m flat-section bore — kunyangwe zvese zvinoda 150,000 m³/h.
Isu tinotanga chirongwa chega chega nedata rakaunganidzwa mumunda-kwete fungidziro. Mainjiniya edu anoyera:
- Ambient particulate density (PM₁₀ uye PM₂.₅) kwemaawa makumi manomwe nemaviri
- Baseline CO₂ uye NOₓ kutariswa panguva yepamusoro sevhisi
- Chiyero chemvura yepasi pevhu munzvimbo dzekamuri dze fan
Iyo data inotyaira sarudzo hapana pepa rinokwanisa: kana kushandisa titanium alloy blades (yekuramba kwechloride), kungave kuisa thermocouples mumotor windings (yekufungidzira kuvharwa), kana kubatanidza CAN bhazi kutaurirana kwechaiyo-nguva mamiriro ekushuma kuSCADA. Imwe saiti yeGuangzhou Line 11 yaida mafeni asingaite corrosion centrifugal ane Hastelloy C-276 casings-nekuti mvura yepasi pH yakayera 3.2. Standard kabhoni simbi ingadai yakaora mukati memwedzi gumi neimwe.
Tarisa Kupfuura Fani-Tarisa kuSystem
Iyo subway tunnel fan yakanaka chete sekubatanidzwa kwayo. Isu takaona mafeni epamusoro-soro achitadza nekuti mabhuraketi anokwirisa akanzwika pa42 Hz - iyo yakafanana neyekupfuura 8-motokari zvitima. Kugadzirisa kwanga kusiri fan nyowani. Yakarongedzerwa madhamu madhamu akasungirirwa mune yekutsigira furemu uye ega pads ane 0.035 mm deflection kushivirira.
Kuchengetedzeka kwechokwadi kunobva mukufunga kwehurongwa: kuyerera kwemhepo (uchishandisa ANSYS Fluent ine chaiyo tunnel geometry), acoustic kurapwa (kuchengeta ruzha pasi pe85 dBA pazviteshi zvevashandi), uye redundancy architecture (N+1 gadziriso ine otomatiki switchover mu <1.2 masekonzi). Wese Zibo Hongcheng Subway Tunnel fan ngarava dzine torque-slip curves, harmonic distortion mishumo, uye electromagnetic kuenderana bvunzo pfupiso-kwete chete CE mucherechedzo.
Kuvimbika hakuwanikwe mufekitari. Zvinoratidzwa mumugero-zuva nezuva, kudhiraivha kwemoto mushure mekudhirowa kwemoto, gumi mushure memakore gumi. Ndosaka tichivakira shanduko yakaipisisa, zhizha rinopisa kwazvo, uye nekurebesa kukanganiswa kwesimba. Nekuti kana utsi huchizadza mukoridho, hapana "yakanaka zvakakwana." Pane chete zvinoshanda.
