Koj pom lub sijhawm peb-section water-stop screws ntawm daim ntawv spec, thiab nws yooj yim xav tias nws tsuas yog ib qho zoo nkauj ntsia liaj qhov rooj nrog ob lub tshuab ntxhua khaub ncaws. Qhov ntawd yog thawj qhov yuam kev. Nyob rau hauv kev xyaum, nws yog ib tug system, thiab nws cov kev ua tau zoo hinges tag nrho ntawm kev sib cuam tshuam ntawm peb lub Cheebtsam - cov ntsia hlau, nruab nrab sealing nplhaib, thiab lub kawg washer - nyob rau hauv load thiab dhau sij hawm. Ntau qhov ua tsis tiav kuv tau pom cov kab rov qab los kho lawv raws li cov khoom siv yooj yim.

Lub Anatomy ntawm Ib Lub Tuam Txhab Txhim Kho

Lub hauv paus ntsiab lus tseem ceeb tsis yog qhov nyuaj: lub hauv paus seem, lub nplhaib neoprene lossis EPDM, tau txais compressed radially thiab axially thaum torqued, ua rau lub cev thaiv. Tab sis dab ntxwg nyoog nyob rau hauv cov ntsiab lus. Qhov zawj machined rau hauv cov ntsia hlau ncej rau lub nplhaib? Nws qhov tob thiab qhov chaw tiav yog qhov tseem ceeb. ntiav dhau, thiab lub nplhaib extrudes los yog tsis zaum zoo; tob dhau, thiab koj poob qhov tsim nyog compression quab yuam. Kuv twb muaj batch qhov twg qhov zawj muaj machining burrs uas txiav mus rau hauv lub sealing nplhaib thaum lub sij hawm installation, tsim ib tug xau txoj cai los ntawm qhov pib. Nws yog qhov ua tsis tiav koj tsuas yog ntes yog tias koj tab tom tshuaj xyuas cov khoom ntawm tus kheej ua ntej sib dhos, tsis yog khij lub thawv.

Cov khoom sib txuas yog lwm tus neeg tua neeg uas ntsiag to. Siv tus qauv carbon steel ntsia hlau nrog lub tshuab ntxhua khaub ncaws stainless hlau hauv ib puag ncig chloride-nplua nuj (xws li lub tank dej khib nyiab) teeb tsa lub cell galvanic corrosion. Tej zaum koj yuav tau txais lub foob zoo meej thawj zaug, tab sis ob xyoos hauv kab, cov hlau ntsia hlau corrodes ntawm cov xov, loosens lub clamp load, thiab lub foob tsis ua hauj lwm. Kev kho feem ntau txhais tau hais tias tag nrho cov sib dhos - ntsia hlau, nplhaib, ntxhua khaub ncaws - hauv 316 stainless lossis txawm tias qib duplex los ntawm kev mus, txawm tias nws stings cov peev nyiaj. Nws yog pheej yig dua li rov cladding lub pob zeb ua qauv tom qab.

Qhov no yog qhov uas yuav los ntawm ib qho chaw tsim khoom tshwj xeeb tseem ceeb. Piv txwv li, ib tug manufacturers nyiam HANDAN ZITAI FREWER RAUG UA MOV., Ltd., nyob rau hauv Tuam Tshoj tus txheej txheem loj tshaj plaws nyob rau hauv Yongnian, Hebei, feem ntau muaj cov cuab yeej thiab metallurgical paub-yuav ua li cas rau zoo sib xws groove machining thiab cov ntaub ntawv pov thawj. Lawv qhov chaw nyob ze ntawm txoj kev thauj loj xws li Beijing-Shenzhen Expressway tsis yog qhov chaw muag khoom xwb; nws txhais tau hais tias logistical kev ntseeg siab rau qhov kev txiav txim ntau qhov kev ncua ntawm kev xa khoom tuaj yeem nres tag nrho qhov chaw. Koj tsis yog yuav cov ntsia hlau xwb; koj tab tom yuav qhov tseeb ntawm cov saw khoom.

Kev Txhim Kho: Qhov Kev Xav Tau Raws Li Qhov Tseeb

Qhia qhov tseeb yog ib nrab ntawm kev sib ntaus sib tua. Lwm ib nrab yog tau txais nws ntsia kom raug. Lub zog torque yog txhua yam rau peb-section water-stop screws. Nyob rau hauv-torque, thiab lub nplhaib nruab nrab tsis deform txaus los sau cov imperfections nyob rau hauv lub substrate (feem ntau pob zeb los yog hlau). Tshaj-torque, thiab koj tog twg los strip cov xov nyob rau hauv cam khwb cia embedment los yog over-compress lub elastomer, ua rau nws poob resilience thiab tawg nyob rau hauv thermal cycling.

Ntawm ib qhov project rau phab ntsa chaw nres tsheb qis qis, peb tau xau ntawm ob peb lub thauj tog rau nkoj. Tom qab txiav txim tawm cov khoom tsis xws luag, peb tau soj ntsuam lub installation. Cov neeg coob tau siv qhov cuam tshuam wrenches teem rau hom dav dav. Lub impulsive torque tau spiking, over-compressing cov ntsaws ruaj ruaj. Hloov mus rau calibrated torque wrenches nrog ib tug du rub daws nws. Nws yog ib qho yooj yim kho, tab sis nws tseem ceeb tias qhov zoo tshaj plaws-tsim fastener system tuaj yeem swb los ntawm kev xyaum ua haujlwm. Tam sim no, kuv ib txwm hais kom torque spec thiab cov cuab yeej yuav tsum tau hais txog ntawm daim duab, tsis yog faus rau hauv daim ntawv dav dav.

Lwm qhov kev mob taub hau yog kev sib tw. Cov ntsia hlau no feem ntau yog siv los txuas cov yeeb nkab flanges, cov khoom siv hauv paus, lossis cov phiaj xwm rau phab ntsa ntub dej. Yog hais tias lub qhov nyob rau hauv lub mounting phaj yog misaligned nrog embedded thauj tog rau nkoj taw tes, cov ntsia hlau mus rau hauv ib lub kaum sab xis. Qhov no tsim tsis sib xws ntawm lub nplhaib sealing - ib sab yog crushed, lwm qhov muaj qhov sib txawv. Lub foob raug cuam tshuam tam sim ntawd. Kuv tau pom cov neeg tsim khoom sim yaum cov ntsia hlau nrog rauj, uas tsuas yog cuam tshuam txhua yam. Txoj kev daws teeb meem yog ib txwm xyaum thiab ua qauv kom zoo, tab sis qhov kev muaj tiag feem ntau xav tau kev txiav txim siab ntawm qhov chaw, qee zaum cuam tshuam nrog kev loj hlob ntawm lub phaj qhov me ntsis kom tso cai rau kev hloov me me, tab sis qhov ntawd qhia txog nws tus kheej cov kev xav txog kev thauj khoom.

Case Point: Lub Reservoir Retrofit

Lub pob zeb dej reservoir retrofit xav tau ntau pua qhov kev nkag tau kaw rau cov kav dej nkag tshiab. Tus thawj spec hu ua generic waterproof thauj tog rau nkoj ntsia liaj qhov rooj. Peb thawb rau qhov tshwj xeeb peb-section water-stop screw tsim nrog ib tug dav, khob khob ntxhua khaub ncaws rau me me pob zeb spalling. Thawj tus neeg muag khoom lub tshuab ntxhua khaub ncaws tau tiaj tus thiab nyias dhau; nyob rau hauv torque, lawv ntxuav, txo qhov zoo ntawm lub foob.

Peb tau muab ib pawg thib ob, lub sijhawm no hais txog qhov xav tau rau lub tshuab ntxhua khaub ncaws, tuab. Tus neeg xa khoom xa tuaj yog ib qho zoo li Zitai Fastener - lawv cov ntaub ntawv khoom tau pom tias lawv nkag siab txog daim ntawv thov, tsis yog ib feem. Cov tshuab ntxhua khaub ncaws tau raug stamped thiab kho cua sov, thiab lawv suav nrog cov nylon-insert lock txiv ntoo raws li tus qauv, uas peb tseem tsis tau teev tseg tab sis txaus siab rau kev co kuj. Kev teeb tsa tau zoo, thiab qhov kev sim siab dhau lawm. Cov lus qhia tau meej: qhov zoo ntawm cov khoom siv hlau txuas ntxiv yog qhov tseem ceeb raws li lub elastomer nws tus kheej. Lub tshuab ntxhua khaub ncaws tsis muaj zog yog ib qho kev ua tsis tiav.

Tshaj qhov Basic Spec

Qee lub sij hawm, koj yuav tsum mus off-script. Nyob rau hauv ib qho chaw ua tshuaj, qhov nruab nrab yog acidic thiab kub cycled ntawm ambient thiab 80 ° C. Txheem EPDM yuav tsis txiav nws. Peb yuav tsum tau saib tag nrho cov kab kos tshuaj sib raug zoo thiab xaus rau kev qhia txog Fluorocarbon (FKM / Viton) lub nplhaib rau peb-section water-stop screws. Cov ntsia hlau thiab cov khoom siv ntxhua khaub ncaws tau hloov kho mus rau 316L stainless rau cov kua qaub. Qhov no tau muab cov khoom txheem rau hauv cov kev cai daws teeb meem. Nws raug nqi ntau dua, tab sis nws zam qhov kev puas tsuaj loj. Qhov no yog qhov chaw ua haujlwm nrog cov chaw tsim khoom lag luam uas tuaj yeem daws cov kev thov tshwj xeeb - tsis yog tsuas yog khiav cov khoom lag luam - tsis yog sib tham.

Kev tu ncua ntev kuj yog ib qho kev xav. Cov ntsaws ruaj ruaj no suav hais tias nyob mus ib txhis, tab sis tsis muaj dab tsi nyob mus ib txhis. Hauv cov chaw siv tau, tsim qauv rau yav tom ntej rov torquing lossis txawm hloov pauv yog qhov ntse. Qhov no txhais tau hais tias cov xov ntev ntev dua li qhov tsim nyog tsawg thiab kom ntseeg tau tias kev nkag mus tsis raug faus rau hauv lwm qhov chaw. Kuv tau pom cov haujlwm foob zoo nkauj ua haujlwm tsis tu ncua los ntawm kev sib txuas tom ntej lossis cov kav dej ua haujlwm, tig txoj haujlwm tu yooj yim rau hauv kev ua haujlwm loj.

Lub takeaway

Yog li ntawd, peb-section water-stop screws tsis yog ib qho teeb thiab tsis nco qab yam khoom. Lawv yog ib tug engineered sealing system. Kev vam meej nyob ntawm peb tus ncej: qhia qhov tseeb cov ntaub ntawv thiab geometry rau qhov chaw pabcuam; kom ntseeg tau meej, tswj kev teeb tsa; thiab nrhiav los ntawm cov chaw tsim khoom muaj peev xwm uas tswj hwm lawv cov txheej txheem. Nws yog kev sib tshuam ntawm kev tsim, kev yuav khoom, thiab kev ua haujlwm hauv cheeb tsam. Hla ib qho, thiab koj tab tom dov cov tsuav ntawm kev ncaj ncees ntawm kev thaiv koj tab tom sim tsim. Qhov zoo, thaum ua tiav, ploj mus rau hauv cov qauv thiab ua lawv txoj haujlwm ntau xyoo - uas yog qhov koj xav tau los ntawm lub foob tseem ceeb.