Nrog rau kev txhim kho ntawm tib neeg txoj kev ua neej nyob, kev paub txog kev tiv thaiv ib puag ncig thiab kev txhawj xeeb txog kev noj qab haus huv, lub kiv puag ncig ntsuab hauv kev lag luam khoom siv hauv tsev tau raug teeb tsa hauv thaj chaw dej thiab cov dej ntws. Raws li ib tug loj tus naj npawb ntawm cov dej zoo xyuas cov ntaub ntawv, txias-galvanized steel kav feem ntau xeb tom qab tsawg tshaj li 5 xyoo ntawm kev pab cuam lub neej, thiab cov hlau tsis hnov ​​tsw yog heev. Cov neeg nyob hauv tau yws rau tsoomfwv cov chaw haujlwm ib zaug, ua rau muaj teeb meem kev sib raug zoo. Piv nrog rau cov kav hlau ib txwm siv, cov kav dej yas muaj cov yam ntxwv ntawm lub teeb yuag, kev tiv thaiv corrosion, siab compressive zog, huv si thiab kev nyab xeeb, tsis tshua muaj dej ntws tsis kam, txuag hluav taws xob, txuag hlau, txhim kho qhov chaw nyob, kev pab lub neej ntev, thiab yooj yim installation. Txaus siab los ntawm cov zej zog engineering thiab tuav txoj haujlwm tseem ceeb, tsim kom muaj kev txhim kho tsis tsim nyog.

Cov yam ntxwv thiab kev siv cov yeeb nkab yas

﹝一﹞ Polypropylene yeeb nkab (PPR)

(1) Hauv kev tsim kho thiab kev teeb tsa tam sim no, feem ntau ntawm cov cua sov thiab dej yog PPR kav dej (thooj). Nws qhov zoo yog yooj yim thiab ceev installation, kev lag luam thiab ib puag ncig tus phooj ywg, lub teeb yuag, huv si thiab tsis muaj tshuaj lom, zoo thaum tshav kub kub ua hauj, corrosion kuj, zoo thermal preservation kev ua tau zoo, lub neej ntev thiab lwm yam zoo. Cov yeeb nkab txoj kab uas hla yog ib qhov loj dua lub nominal txoj kab uas hla, thiab cov yeeb nkab diameters tau muab faib ua DN20, DN25, DN32, DN40, DN50, DN63, DN75, DN90, DN110. Muaj ntau hom yeeb nkab fittings, tees, luj tshib, yeeb nkab clamps, reducers, yeeb nkab plugs, yeeb nkab clamps, brackets, hangers. Muaj cov kav dej txias thiab dej kub, cov kav dej txias yog lub raj xaim ntsuab, thiab cov kav dej kub yog lub raj xa dej liab. Cov li qub muaj xws li PPR pob li qub, lub ntiaj teb li qub, npauj npaim li qub, lub qhov rooj li qub, thiab cov khoom siv PPR thiab cov tub ntxhais tooj liab sab hauv.

(2) Cov kev sib txuas ntawm cov yeeb nkab muaj xws li vuam, kub yaj thiab threaded kev twb kev txuas. PPR yeeb nkab siv cov dej kub sib txuas ua kom ntseeg tau zoo tshaj plaws, yooj yim rau kev khiav lag luam, huab cua nruj zoo, thiab muaj zog sib cuam tshuam. Cov yeeb nkab kev sib txuas tau txais ib lub tes tuav fusion splicer rau kev sib txuas kub-melt. Ua ntej txuas, tshem cov plua plav thiab cov khoom txawv teb chaws los ntawm cov kav dej thiab cov khoom siv. Thaum lub tshuab lub teeb liab yog nyob rau thiab ruaj khov, kho cov kav dej (thooj) kom txuas nrog. DN <50, qhov kub yaj qhov tob yog 1-2MM, thiab DN <110, qhov kub yaj qhov tob yog 2-4MM. Thaum sib txuas, muab cov yeeb nkab kawg yam tsis muaj rotating Ntxig rau hauv lub tsho cua sov kom ncav cuag qhov tob uas tau teev tseg. Nyob rau tib lub sijhawm, thawb cov yeeb nkab fittings mus rau lub taub hau cua sov yam tsis muaj kev sib hloov rau cua sov. Tom qab lub sij hawm cua sov mus txog, tam sim ntawd tshem cov kav dej thiab cov yeeb nkab fittings ntawm lub tsho cua sov thiab lub taub hau cua sov tib lub sij hawm, thiab ntxig rau lawv mus rau qhov xav tau qhov tob kom sai thiab sib npaug yam tsis muaj kev sib hloov. Ib qho kev sib flange yog tsim ntawm qhov sib koom ua ke. Thaum lub sij hawm teev cua sov, qhov sib koom ua ke tshiab tuaj yeem ntsuas tau, tab sis kev sib hloov yog txwv nruj heev. Thaum cua sov cov kav dej thiab fittings, tiv thaiv kom tsis txhob muaj cua sov ntau dhau thiab ua kom cov tuab tuab. Cov yeeb nkab yog deformed nyob rau hauv cov yeeb nkab haum. Nws yog nruj me ntsis txwv tsis pub tig thaum kub yaj intubation thiab calibration. Yuav tsum tsis muaj nplaim taws qhib ntawm qhov chaw ua haujlwm, thiab nws yog nruj me ntsis txwv tsis pub ci cov yeeb nkab nrog cov nplaim taws qhib. Thaum kho cov kav dej kub thiab fittings vertically, siv lub teeb quab yuam los tiv thaiv lub luj tshib los ntawm dabtsi yog khoov. Tom qab kev sib txuas ua tiav, cov kav dej thiab cov khoom siv yuav tsum tau tuav kom nruj kom lub sijhawm txias txaus, thiab txhais tes tuaj yeem tso tawm tom qab txias rau qee yam. Thaum cov yeeb nkab PP-R txuas nrog cov yeeb nkab hlau txuas, PP-R yeeb nkab nrog cov hlau ntxig yuav tsum tau siv los ua kev hloov pauv. Cov yeeb nkab haum thiab PP-R yeeb nkab yog txuas nrog lub qhov (socket) kub-melt thiab txuas nrog cov yeeb nkab hlau los yog cov khoom siv kho mob ntawm cov khoom siv tu cev. Thaum siv threaded kev twb kev txuas, nws yog advisable siv polypropylene raw khoom daim kab xev raws li lub sealing muab tub lim. Yog tias lub faucet txuas nrog lub pas dej mop, nruab ib lub luj tshib poj niam (xov hauv) ntawm qhov kawg ntawm PPR yeeb nkab rau ntawm nws. Tsis txhob siv lub zog ntau dhau thaum lub sij hawm kev teeb tsa cov kav dej, thiaj li tsis ua rau cov xov fittings puas thiab ua rau cov dej xau ntawm kev sib txuas. Cov yeeb nkab txiav kuj tseem tuaj yeem raug txiav los ntawm cov kav dej tshwj xeeb: bayonet ntawm cov yeeb nkab txiab yuav tsum tau hloov kho kom haum rau txoj kab uas hla ntawm cov yeeb nkab raug txiav, thiab lub zog yuav tsum sib npaug thaum tig thiab txiav. Tom qab txiav, qhov tawg yuav tsum tau muab sib npaug nrog ib qho sib npaug sib npaug. Thaum cov yeeb nkab tawg, ntu yuav tsum yog perpendicular rau cov yeeb nkab axis tsis muaj burrs.

﹝二﹞ Rigid Polyvinyl Chloride Pipe (UPVC)

(1) UPVC kav dej (thooj) yog siv rau cov dej ntws. Vim nws lub teeb yuag, corrosion kuj, siab zog, thiab lwm yam, nws yog dav siv nyob rau hauv pipeline installation. Raws li ib txwm muaj, lub neej kev pab cuam feem ntau mus txog 30 txog 50 xyoo. Cov yeeb nkab UPVC muaj cov phab ntsa zoo nkauj thiab cov dej tsis muaj kev sib txhuam tsis zoo, uas kov yeej qhov tsis xws luag uas cov yeeb nkab hlau cam khwb cia cuam tshuam rau qhov ntws tawm vim xeb thiab scaling. Cov yeeb nkab txoj kab uas hla kuj yog ib qho loj dua li lub nominal txoj kab uas hla.Cov yeeb nkab fittingsmuab faib ua oblique tees, crosses, luj tshib, yeeb nkab clamps, reducers, yeeb nkab plugs, ntxiab, yeeb nkab clamps, thiab hangers.

(2) Tshem tawm cov kua nplaum rau kev sib txuas. Cov nplaum yuav tsum tau shaken ua ntej siv. Cov kav dej thiab qhov (socket) yuav tsum tau muab ntxuav kom huv. Qhov me me ntawm qhov sib txawv ntawm lub qhov (socket), qhov zoo dua. Siv daim ntaub emery lossis saw hniav kom roughen qhov sib koom ua ke. Txhuam cov kua nplaum me me hauv lub qhov (socket) thiab siv cov nplaum ob zaug rau sab nraud ntawm lub qhov (socket). Tos kom cov kua nplaum qhuav rau 40-60s. Tom qab muab tso rau hauv qhov chaw, kev saib xyuas yuav tsum tau them nyiaj kom tsim nyog nce lossis txo cov kua nplaum kom qhuav raws li kev hloov pauv huab cua. Dej yog nruj me ntsis txwv tsis pub thaum sib khi. Cov yeeb nkab yuav tsum tau muab tso rau hauv lub trench tom qab nws nyob hauv qhov chaw. Tom qab qhov sib koom ua ke yog qhuav, pib backfilling. Thaum backfilling, sau lub voj voog ntawm cov yeeb nkab kom nruj nrog cov xuab zeb thiab tawm hauv qhov sib koom ua ke kom rov qab ua kom ntau ntau. Siv cov khoom los ntawm tib lub chaw tsim khoom. Thaum txuas cov yeeb nkab UPVC rau cov yeeb nkab steel, qhov sib koom ua ke ntawm cov yeeb nkab steel yuav tsum tau muab ntxuav thiab nplaum, UPVC yeeb nkab yog rhuab kom muag muag (tab sis tsis hlawv), thiab muab tso rau ntawm cov yeeb nkab steel thiab txias. Nws yog qhov zoo dua los ntxiv cov yeeb nkab clamp. Yog hais tias cov yeeb nkab puas nyob rau hauv ib cheeb tsam loj thiab yuav tsum tau hloov tag nrho cov yeeb nkab, ob lub qhov (socket connector) yuav siv tau los hloov cov yeeb nkab. Cov txheej txheem hnyav tuaj yeem siv los cuam tshuam nrog cov xau ntawm cov kuab tshuaj sib txuas. Lub sijhawm no, tso cov dej hauv cov yeeb nkab ua ntej, thiab ua kom cov yeeb nkab ua rau lub siab tsis zoo, thiab tom qab ntawd txhaj cov nplaum rau ntawm qhov hws ntawm qhov xau. Vim lub siab tsis zoo nyob rau hauv lub raj, cov nplaum yuav nqus mus rau hauv lub qhov hws kom ua tiav lub hom phiaj ntawm kev tso tseg. Txoj kev sib txuas ua ke yog feem ntau yog tsom rau ntawm qhov to ntawm qhov me me thiab cov pob qij txha hauv cov kav dej. Thaum lub sij hawm no, xaiv 15-20cm ntev kav ntawm tib lub caliber, txiav lawv sib nrug longitudinally, roughen lub puab nto ntawm lub casing thiab cov txheej saum npoo ntawm cov yeeb nkab yuav tsum tau patched raws li txoj kev ntawm kev sib txuas cov pob qij txha, thiab npog qhov to. nrog kua nplaum. Txoj kev iav fiber ntau yog npaj cov tshuaj resin nrog epoxy resin thiab curing agent. Tom qab impregnating resin tov nrog iav fiber ntau daim ntaub, nws yog tusyees lub qhov txhab nyob rau ntawm qhov chaw ntawm lub leaking ib feem ntawm cov yeeb nkab los yog sib koom, thiab ua FRP tom qab kho. Vim tias txoj kev muaj kev tsim kho yooj yim, yooj yim-rau-tus tswv thev naus laus zis, cov txiaj ntsig zoo plugging thiab tus nqi qis, nws muaj kev nce qib siab thiab siv tus nqi hauv kev tiv thaiv cov dej ntws thiab cov dej xau.