Cov kav dej yas tau ua tiav kev txhim kho thiab txhim kho kev tsim qauv thiab kev siv thev naus laus zis hauv kev tsim kho, thiab tau txais cov kev paub zoo tshaj plaws, uas tau txhawb nqa cov kav dej yas los tuav txoj haujlwm tseem ceeb hauv kev tsim cov dej thiab cov kav dej engineering, thiab tsim kom muaj kev txhim kho tsis tuaj yeem. sib.
HDPE yeeb nkab txais cov cuab yeej tsim khoom thiab thev naus laus zis, thiab yog tsim los ntawm kub extrusion. Nws muaj cov yam ntxwv ntawm corrosion kuj, du sab hauv phab ntsa, tsis tshua muaj dej tsis kam, siab zog, zoo toughness thiab lub teeb yuag. HDPE kav yog qhov thib ob siv cov kav dej yas hauv ntiaj teb tom qab PVC-U cov kav dej.
1. Kev tsim kho cov kav dej HDPE
Hauv cov kav dej thiab cov kav dej, cov kav dej yas tau maj mam hloov cov kav dej ib txwm muaj xws li cov kav hlau cam khwb cia thiab cov kav dej galvanized steel thiab ua cov kav dej loj. Piv nrog rau cov kav dej ib txwm muaj, cov kav dej yas muaj qhov zoo xws li lub teeb yuag, kev tiv thaiv corrosion, tsis tshua muaj dej ntws tsis kam, txuag hluav taws xob, yooj yim thiab ceev installation, thiab tus nqi qis, thiab nyiam los ntawm cov kav dej engineering hauv zej zog. Nyob rau tib lub sijhawm, nrog kev txhim kho sai ntawm kev lag luam petrochemical thiab kev nce qib ntawm kev tsim cov tshuab yas, cov khoom siv ntawm cov kav dej yas tau nce sai heev, thiab cov khoom lag luam tau dhau los ua ntau haiv neeg.
HDPE kav yog qhov thib ob siv cov kav dej yas hauv ntiaj teb tom qab PVC-U cov kav dej. Cov kav dej nruab nrab lossis siab ntom ntom polyethylene ntawm PE80 thiab PE100 qib yuav tsum tau siv rau kev xa roj; Cov kav dej nruab nrab lossis siab ntom ntom polyethylene ntawm qib PE80 thiab PE100 feem ntau yog siv rau cov kav dej, thiab PE63 tau maj mam tshem tawm. Hais txog kev xa dej, kev loj hlob sai tshaj plaws yog PE100 cov kav dej, uas xav tias yuav loj hlob ntau dua 10 feem pua hauv tsib xyoos tom ntej.
Hauv Tebchaws Europe, cov kav dej HDPE tau tsim thiab siv tau nrawm dua, thiab cov kav dej HDPE tau maj mam hloov cov txheej txheem ntawm cov kav dej PVC-U thiab dhau los ua cov kav dej loj. Tib lub sijhawm, cov kav dej HDPE tau maj mam siv sab nraud Europe.
2. HDPE yeeb nkab specifications thiab txoj kev sib txuas
Txoj kab uas hla ntawm HDPE kav yog li ntawm DN32 txog DN1000, thiab muab faib ua 26 qib. Cov qib siab yog nyob nruab nrab ntawm 0.6Mpa ~ 1.6Mpa, nrog rau tag nrho 5 qib.
HDPE yeeb nkab yuav yaj ntawm qhov kub ntawm 190 degree thiab 240 degree. Siv cov yam ntxwv no, ob qho tib si melted ntawm cov yeeb nkab (los yog cov yeeb nkab fittings) tau txais kev sib cuag thiab tswj xyuas kom tsim nyog. Tom qab txias, ob qho tib si tuaj yeem ruaj khov. Yog li ntawd, txoj kev sib txuas ntawm PE yeeb nkab yog qhov txawv ntawm U-PVC yeeb nkab. Feem ntau, ob txoj kev siv hluav taws xob kub yaj txuas thiab kub yaj pob tw yog siv. Raws li qhov loj ntawm cov yeeb nkab, nws tuaj yeem muab faib ua: thaum DN Tsawg dua lossis sib npaug ntawm 63, kev txhaj tshuaj molding kub yaj qhov (socket) txuas tau txais yuav; Thaum DN Ntau dua los yog sib npaug rau 75, siv kub yaj pob tw txuas lossis electrofusion socket txuas; thaum txuas nrog cov khoom sib txawv, siv flange lossis xov txuas.
Nyob rau hauv cov nqe lus ntawm txoj kev kho kav dej, muaj txoj kev nthuav dav cov yeeb nkab siv thiab txheej txheej HDPE.
3. Daim ntawv thov thaj chaw ntawm HDPE
Cov kav dej HDPE feem ntau yog siv rau: cov kav dej hauv nroog engineering, dej hauv tsev hauv tsev, sab nraum zoov faus dej thiab cov tsev nyob, faus dej hauv cov chaw tsim khoom, kho cov kav dej qub, cov kav dej kho vaj tse, vaj tsev, dej ntws. thiab lwm yam kev lag luam cov kav dej, thiab lwm yam.
Txawm li cas los xij, nws yuav tsum raug sau tseg tias cov kav dej HDPE tsis tuaj yeem siv rau cov kab dej kub.
4. Qhov zoo ntawm HDPE dej kav dej hauv daim ntawv thov
Cov kav dej HDPE tau siv dav, feem ntau vim tias lawv muaj qhov zoo sib xws ntawm lwm cov kav dej:
(1) Nws yog ib qho yooj yim los tsim ib lub kaw anti-seepage system los ntawm lub taub qab vuam thiab electrofusion vuam. Thaum nteg nyob rau hauv lub trench, tus nqi ntawm earthwork excavated thiab tus nqi ntawm accessories yuav txo tau.
(2), lub teeb yuag thiab yooj yim rau nruab thiab tuav;
(3), muaj zog hnav tsis kam thiab kev ua haujlwm zoo hydraulic, tsis tas yuav muaj kev tiv thaiv sab nraud hauv cov kav dej faus. Nws tuaj yeem siv rau hauv av qeeg thiab av qeeg hauv thaj chaw mining, thiab tseem tuaj yeem tso rau hauv qab ntawm cov dej ntws los ntawm txoj kev submersion.
(4), tshuaj tiv thaiv corrosion, tsis kam rau sab hauv, sab nraud thiab microbial corrosion, muaj zog corrosion kuj, thiab noj qab nyob zoo. Nws yog tsim rau conveying acidic thiab alkaline tshuaj, dej phwj tuaj, natural gas, roj thiab lwm yam khoom;
(5), zoo ib puag ncig adaptability thiab Frost tsis kam. Yuav siv tau rau cov kav dej hauv tsev thiab sab nraum zoov.
(6), lub neej ua haujlwm ntev, nrog lub neej ua haujlwm ntev tshaj li 50 xyoo;
(7), yooj yim rau rov siv dua.
5. Cov teeb meem xav tau kev saib xyuas hauv kev siv cov kav dej HDPE
(1) Nws raug nquahu kom siv shading ntsuas rau sab nraum zoov tso rau hauv qhov qhib huab cua, qhov twg muaj hnub ci.
(2) Cov kav dej HDPE faus, cov kav dej nrog DN Tsawg dua lossis sib npaug li 110 tuaj yeem ntsia tau rau hauv cov duab serpentine nyob rau lub caij ntuj sov, thiab cov kav dej nrog DN Ntau dua lossis sib npaug li 110 tuaj yeem tiv taus thermal stress vim muaj av txaus, yog li muaj tsis tas yuav khaws cov yeeb nkab ntev; Thaum lub caij ntuj no, Tsis tas yuav khaws cov yeeb nkab ntev.
(3) Thaum cov kav dej HDPE raug teeb tsa, yog tias qhov chaw ua haujlwm tsawg dhau (xws li cov kav dej zoo, kev tsim kho hauv qab nthab, thiab lwm yam), yuav tsum siv txoj kev sib txuas ntawm electrofusion.
(4) Thaum lub qhov (socket) kub-melt sib txuas, cov cua kub yuav tsum tsis txhob siab dhau los yog ntev heev, thiab qhov kub thiab txias yuav tsum tau tswj ntawm 210 ± 10 degree, txwv tsis pub nws yuav ua rau ntau dhau molten slurry extruded hauv fittings thiab txo. sab hauv txoj kab uas hla ntawm dej; Nyob rau tib lub sijhawm, ua tib zoo saib xyuas lub kaum sab xis thiab kev taw qhia ntawm cov yeeb nkab fittings kom tsis txhob rov ua haujlwm dua.
(5) Thaum qhov kub-melt taub qab txuas yog tsim, qhov voltage yuav tsum nyob nruab nrab ntawm 200 thiab 220V. Yog tias qhov hluav taws xob siab dhau lawm, qhov kub ntawm lub phaj cua sov yuav siab dhau, thiab qhov hluav taws xob yuav qis dhau, thiab lub tshuab docking yuav tsis ua haujlwm ib txwm; lub docking interface yuav tsum tau khaws cia kom zoo thaum docking. Txwv tsis pub, nws yuav ua rau cov pob qij txha tsis txaus, tsis muaj zog vuam tsis txaus, thiab curling tsis raug; Thaum cov cua sov phaj yog rhuab, cov yeeb nkab interface tsis tau ntxuav, los yog cov cua kub phaj muaj impurities xws li cov roj stains, sediment, thiab lwm yam., uas yuav ua rau lub sib koom ua ke mus rau detach thiab xau dej; Lub sij hawm cua sov yuav tsum tau tswj kom zoo, lub sij hawm cua sov yog luv, thiab lub sij hawm nqus cua sov ntawm cov yeeb nkab tsis txaus, uas yuav ua rau lub vuam di ncauj curling me me, thiab lub sij hawm cua sov yog ntev dhau lawm, uas yuav ua rau lub vuam di ncauj curling me me, thiab lub sij hawm cua sov yog ntev dhau lawm, uas yuav ua rau lub welding di ncauj curling. welding hlws ris curling kom loj dhau, uas yuav ua rau lub vuam virtual.
