xov xwm

1) Kev Tiv Thaiv Kev Sib Tsoo thiab Lub Neej Ua Haujlwm Ntev

Cov kav dej FRP muaj kev tiv thaiv xeb zoo heev, tiv taus xeb los ntawm cov kua qaub, alkalis, ntsev, dej hiav txwv, cov dej khib nyiab roj, cov av corrosive, thiab cov dej hauv av - uas yog, ntau yam tshuaj lom neeg. Lawv kuj ua pov thawj tias tiv taus cov oxides muaj zog thiab halogens. Yog li ntawd, lub neej ntawm cov kav dej no tau ntev dua, feem ntau tshaj 30 xyoo. Kev sim ua hauv chav kuaj qhia tau tiasCov kav dej FRPtuaj yeem muaj lub neej ua haujlwm ntau dua 50 xyoo. Qhov sib piv, cov kav hlau hauv qhov chaw qis, saline-alkali, lossis lwm qhov chaw corrosive heev xav tau kev saib xyuas tom qab tsuas yog 3-5 xyoos, nrog rau lub neej ua haujlwm tsuas yog li 15-20 xyoo, thiab cov nqi saib xyuas siab dua hauv cov theem tom qab ntawm kev siv. Kev paub txog kev ua haujlwm hauv tsev thiab thoob ntiaj teb tau ua pov thawj tias cov kav dej FRP khaws cia 85% ntawm lawv lub zog tom qab 15 xyoos thiab 75% tom qab 25 xyoos, nrog rau cov nqi saib xyuas qis. Ob qho tib si ntawm cov nqi no tshaj qhov tsawg kawg nkaus ntawm kev khaws cia lub zog xav tau rau cov khoom FRP siv hauv kev lag luam tshuaj tom qab ib xyoos ntawm kev siv. Lub neej ua haujlwm ntawm cov kav dej FRP, qhov teeb meem ntawm kev txhawj xeeb loj, tau ua pov thawj los ntawm cov ntaub ntawv sim los ntawm cov ntawv thov tiag tiag. 1) Cov yam ntxwv hydraulic zoo heev: Cov kav dej FRP (fiberglass reinforced plastic) uas tau teeb tsa hauv Tebchaws Meskas hauv xyoo 1960 tau siv rau ntau dua 40 xyoo thiab tseem ua haujlwm ib txwm.

2) Cov yam ntxwv zoo ntawm hydraulic

Cov phab ntsa sab hauv du, kev sib txhuam hydraulic qis, kev txuag hluav taws xob, thiab kev tiv thaiv kev tawg thiab xeb. Cov kav hlau muaj cov phab ntsa sab hauv ntxhib, ua rau muaj kev sib txhuam siab uas nce sai nrog kev xeb, ua rau muaj kev poob ntxiv. Qhov chaw ntxhib kuj muab cov xwm txheej rau kev tso cov nplai. Txawm li cas los xij, cov kav FRP muaj qhov ntxhib ntawm 0.0053, uas yog 2.65% ntawm cov kav hlau tsis sib xws, thiab cov kav yas sib xyaw ua ke muaj qhov ntxhib ntawm tsuas yog 0.001, uas yog 0.5% ntawm cov kav hlau tsis sib xws. Yog li ntawd, vim tias phab ntsa sab hauv tseem du thoob plaws nws lub neej, qhov tsis kam qis coefficient txo qhov poob siab raws cov kav dej, txuag hluav taws xob, nce lub peev xwm thauj mus los, thiab coj cov txiaj ntsig kev lag luam ntau. Qhov chaw du kuj tiv thaiv kev tso cov khoom tsis huv xws li cov kab mob, nplai, thiab quav ciab, tiv thaiv kev ua qias tuaj ntawm cov khoom thauj.

3) Zoo Tiv Thaiv Kev Laus, Tiv Thaiv Kub, thiab Tiv Thaiv Khov

Cov kav dej fiberglass siv tau ntev hauv qhov kub ntawm -40 txog 80 ℃. Cov resins uas tiv taus kub siab nrog cov qauv tshwj xeeb tuaj yeem ua haujlwm li qub ntawm qhov kub siab tshaj 200 ℃. Rau cov kav dej siv sab nraum zoov rau lub sijhawm ntev, cov khoom nqus ultraviolet raug ntxiv rau sab nraud kom tshem tawm cov hluav taws xob ultraviolet thiab qeeb qeeb kev laus.

4) Kev ua kom sov tsawg, kev rwb thaiv tsev zoo thiab kev rwb thaiv tsev hluav taws xob

Cov khoom siv yeeb nkab uas siv ntau tshaj plaws yog qhia nyob rau hauv Rooj 1. Cov khoom siv fiberglass thermal conductivity yog 0.4 W/m·K, kwv yees li 8‰ ntawm cov hlau, ua rau muaj kev ua haujlwm rwb thaiv tsev zoo heev. Fiberglass thiab lwm yam khoom siv tsis yog hlau tsis yog conductive, nrog rau kev tiv thaiv rwb thaiv tsev ntawm 10¹² txog 10¹⁵ Ω·cm, muab kev rwb thaiv tsev zoo heev, ua rau lawv zoo tagnrho rau kev siv hauv thaj chaw uas muaj cov kab hluav taws xob thiab cov kab sib txuas lus thiab thaj chaw uas muaj teeb meem xob laim.

5) Lub teeb yuag, lub zog tshwj xeeb siab, thiab tiv taus kev qaug zog zoo

Qhov ceev ntawmCov yas fiberglass reinforced (FRP)yog nruab nrab ntawm 1.6 thiab 2.0 g / cm³, uas tsuas yog 1-2 npaug ntawm cov hlau ib txwm thiab kwv yees li 1/3 ntawm txhuas. Vim tias cov fibers txuas ntxiv hauv FRP muaj lub zog tensile siab thiab elastic modulus, nws lub zog kho tshuab tuaj yeem ncav cuag lossis tshaj qhov ntawm cov hlau carbon ib txwm, thiab nws lub zog tshwj xeeb yog plaub npaug ntawm cov hlau. Rooj 2 qhia txog kev sib piv ntawm qhov ceev, lub zog tensile, thiab lub zog tshwj xeeb ntawm FRP nrog ntau yam hlau. Cov ntaub ntawv FRP muaj kev tiv thaiv kev qaug zog zoo. Kev qaug zog tsis ua haujlwm hauv cov ntaub ntawv hlau tsim sai sai los ntawm sab hauv mus rau sab nraud, feem ntau tsis muaj kev ceeb toom ua ntej; txawm li cas los xij, hauv cov khoom siv fiber-reinforced, qhov sib txuas ntawm cov fibers thiab matrix tuaj yeem tiv thaiv kev tawg, thiab kev qaug zog tsis ua haujlwm ib txwm pib los ntawm qhov tsis muaj zog tshaj plaws hauv cov khoom siv. Cov kav dej FRP tuaj yeem teeb tsa kom muaj lub zog sib txawv ntawm circumferential thiab axial los ntawm kev hloov pauv cov fiber layup kom phim lub xeev kev ntxhov siab, nyob ntawm lub zog circumferential thiab axial.

6) Kev hnav tsis kam zoo

Raws li kev ntsuam xyuas cuam tshuam, nyob rau hauv tib qho xwm txheej thiab tom qab 250,000 lub voj voog thauj khoom, qhov hnav ntawm cov kav hlau yog kwv yees li 8.4 hli, cov kav asbestos cement kwv yees li 5.5 hli, cov kav pob zeb kwv yees li 2.6 hli (nrog tib lub qauv sab hauv zoo li PCCP), cov kav av nplaum kwv yees li 2.2 hli, cov kav polyethylene siab ceev kwv yees li 0.9 hli, thaum cov kav fiberglass tsuas yog hnav mus txog 0.3 hli. Qhov hnav ntawm cov kav fiberglass yog me heev, tsuas yog 0.3 hli nyob rau hauv cov khoom hnyav. Nyob rau hauv lub siab ib txwm, qhov hnav ntawm cov khoom nruab nrab ntawm sab hauv ntawm cov kav fiberglass yog qhov tsis tseem ceeb. Qhov no yog vim tias sab hauv ntawm cov kav fiberglass yog tsim los ntawm cov resin siab thiab cov iav fiber lev txiav, thiab cov txheej resin ntawm sab hauv zoo tiv thaiv kev raug fiber.

7) Tsim tau zoo

Fiberglass yog ib yam khoom sib xyaw uas nws cov hom khoom siv raw, qhov sib piv, thiab kev teeb tsa tuaj yeem hloov pauv kom haum rau ntau yam kev ua haujlwm. Cov kav dej fiberglass tuaj yeem tsim thiab tsim kom ua tau raws li ntau yam kev xav tau ntawm tus neeg siv, xws li qhov kub thiab txias sib txawv, qhov nrawm ntws, qhov siab, qhov tob faus, thiab qhov xwm txheej thauj khoom, ua rau cov kav dej muaj qhov kub thiab txias sib txawv, qhov ntsuas siab, thiab qib tawv sib txawv.Cov kav dej fiberglassSiv cov resins uas tiv taus kub thiab txias uas tsim tshwj xeeb kuj tseem ua haujlwm tau zoo li qub ntawm qhov kub siab tshaj 200 ℃. Cov khoom siv yeeb nkab fiberglass yooj yim rau kev tsim khoom. Cov flanges, lub luj tshib, tees, reducers, thiab lwm yam, tuaj yeem ua tau raws li qhov xav tau. Piv txwv li, cov flanges tuaj yeem txuas nrog txhua lub flange hlau ntawm tib lub siab thiab lub raj txoj kab uas hla uas ua raws li cov qauv hauv tebchaws. Lub luj tshib tuaj yeem ua tau ntawm txhua lub kaum sab xis raws li qhov xav tau ntawm qhov chaw tsim kho. Rau lwm cov ntaub ntawv yeeb nkab, lub luj tshib, tees, thiab lwm yam khoom siv nyuaj rau kev tsim khoom tsuas yog cov khoom txheem ntawm cov lus qhia tshwj xeeb.

8) Cov nqi tsim kho thiab kev txij nkawm qis

Cov kav dej fiberglass yog lub teeb yuag, muaj zog heev, yooj yim rau kev thauj mus los, thiab yooj yim rau kev teeb tsa, tsis tas yuav muaj hluav taws qhib, ua kom muaj kev nyab xeeb hauv kev tsim kho. Qhov ntev ntawm ib lub kav dej txo cov pob qij txha hauv qhov project thiab tshem tawm qhov xav tau kev tiv thaiv xeb, tiv thaiv kev ua qias tuaj, rwb thaiv tsev, thiab kev ntsuas kev txuag cua sov, ua rau cov nqi tsim kho thiab kev txij nkawm qis. Kev tiv thaiv cathodic tsis tas yuav tsum muaj rau cov kav dej faus, uas tuaj yeem txuag tau ntau dua 70% ntawm cov nqi txij nkawm engineering.