Kev xaiv cov dej xa dej thiab cov kav dej xau li qub thiab qhov zoo thiab qhov tsis zoo ntawm ntau yam li qub Ua cov raj xa dej tshuaj yuav tsum tau bypass li qub thaum lawv tau teeb tsa.

Kev xaiv cov dej xa dej thiab cov kav dej xa dej thiab qhov zoo thiab qhov tsis zoo ntawm ntau yam li qub Ua cov kav dej tshuaj yeeb dej caw yuav tsum tau bypass li qub thaum lawv tau teeb tsa Kev tsim cov dej thiab cov kav dej yog cov yeeb nkab yas, cov yeeb nkab hlau thiab cov yeeb nkab sib xyaw peb hom. Tab sis deb dhau ntawm cov pawg no, muaj ntau yam tshiab ntawm tubing. 1, steel yeeb nkab Cov kav hlau muaj xws li cov kav hlau zoo tib yam, cov kav hlau galvanized thiab seamless steel kav. Ordinary steel kav yog siv rau cov kav dej uas tsis yog hauv tsev lossis cov kav dej hauv tsev. Galvanized steel yeeb nkab nto (siv kub dip galvanized txheej txheem ntau lawm) yog los tiv thaiv xeb thiab corrosion, thiaj li tsis cuam tshuam rau cov dej zoo, haum rau haus cov kav dej los yog qee cov kav dej uas muaj dej zoo; Seamless steel yeeb nkab yog siv nyob rau hauv high-pressure yeeb nkab network, thiab nws ua hauj lwm siab yog siab tshaj 1.6MPa. Txoj kev sib txuas ntawm cov yeeb nkab steel yog threaded kev twb kev txuas, vuam thiab flange kev twb kev txuas. Threaded kev twb kev txuas yog tsim los ntawm threaded yeeb nkab fittings. Cov khoom feem ntau yog ua los ntawm malleable cam khwb cia hlau, muab faib ua galvanized thiab tsis-galvanized ob, nws cov corrosion kuj thiab txhua yam muaj zog ntau dua. Tam sim no, steel fittings yog tsawg. Galvanized steel kav yuav tsum tau txuas nrog threads thiab lawv fittings yuav tsum tau galvanized fittings. Txoj kev no feem ntau siv rau hauv cov yeeb nkab qhib. Vuam yog siv lub tshuab welding, vuam pas nrig welding los txuas ob ntu ntawm cov yeeb nkab ua ke. Qhov zoo yog nruj sib koom ua ke, tsis muaj dej to, tsis muaj cov khoom siv, kev tsim kho sai. Tab sis koj tsis tuaj yeem disassemble nws. Vuam tsuas yog siv tau rau cov kav hlau uas tsis muaj galvanized. Txoj kev no feem ntau yog siv rau cov yeeb nkab zais. Lub flange txuas nrog cov yeeb nkab nrog ib txoj kab uas loj dua (tshaj 50m), thiab flange feem ntau yog welded (los yog threaded) ntawm cov yeeb nkab kawg, thiab tom qab ntawd ob lub flanges txuas nrog bolts, thiab tom qab ntawd ob ntu ntawm cov yeeb nkab. txuas ua ke. Flange kev twb kev txuas feem ntau yog siv rau hauv kev sib txuas ntawm li qub, kos li qub, ntsuas dej, cov twj tso kua mis thiab lwm qhov chaw, nrog rau kev xav tau kom nquag plias, kev saib xyuas ntawm cov yeeb nkab seem. 2, Cov kav dej yas yas ** Cov kav dej uas nquag siv rau dej yog cov yeeb nkab polyvinyl chloride nyuaj (UPVC) thiab cov yeeb nkab polypropylene (PP yeeb nkab). Tsis tas li ntawd, muaj polyethylene (PE) yeeb nkab, haum rau kev xa dej kub tsis tshaj 40 ℃, cov qauv tsim raws li cov kev cai ntawm "Polyethylene (PE) yeeb nkab rau dej" GB / T13663; Crosslinked polyethylene (PE-x) yeeb nkab: polybutene (PB) yeeb nkab, haum rau conveying dej kub ntawm 20 "--90 ℃. Cov phab ntsa du, kev ua haujlwm zoo hydraulic, lub teeb pom kev zoo, kev ua haujlwm yooj yim thiab kev teeb tsa, Tab sis qhov tsis zoo yog qhov tsis zoo ntawm qhov kub thiab tsis muaj zog, yog li ntawd, nws tseem txwv rau kev siv lub zog polyvinyl chloride (UPVc) yeeb nkab qhov kub tsis tshaj 45 ° C. Feem ntau, UPVC kav yog txuas nrog lub qhov (socket), thiab lub qhov (socket bonding) yog tsim rau cov yeeb nkab sab nraud txoj kab uas hla ntawm 20 ~ 1601m Rubber nplhaib txuas yog tsim rau cov yeeb nkab txoj kab uas hla ntau dua los yog sib npaug ntawm 63 hli nrog hlau yeeb fittings, li qub, thiab lwm yam, yuav tsum threaded los yog flanged polypropylene dej mov yeeb nkab (PP yeeb), haum rau lub system ua hauj lwm siab tsis ntau tshaj 0.6Mpa, ua hauj lwm kub tsis ntau tshaj 70 ℃ Polypropylene yeeb nkab rau dej yog txuas nrog lub qhov (socket) kub yaj. Thaum txuas nrog cov yeeb nkab hlau fittings, polypropylene yeeb nkab fittings nrog hlau inserts yog siv raws li kev hloov. Cov yeeb nkab fittings yog txuas nrog polypropylene yeeb nkab los ntawm kub yaj lub qhov (socket), thiab txuas nrog hlau yeeb nkab fittings los ntawm xov. 3, PVC tube Hluav taws xob threading yeeb nkab thiab cov kav dej. 4, tooj dag Cov yeeb nkab tooj liab thiab nws cov khoom siv tau ua tiav ntau yam thiab cov lus qhia tshwj xeeb, txoj kab uas hla loj, tuaj yeem xaiv los ntawm 6mm txog 273mm. Copper yeeb nkab yog ib qho yooj yim khoov, yooj yim rau txheej txheem, yooj yim hloov cov duab, tuaj yeem ua tau raws li kev tsim hluav taws xob engineering ntawm cov kav dej txuas thiab kev sib txuas ntawm txhua qhov kev xav tau. Tshwj xeeb tshaj yog nyob rau hauv kev tsim kho, kev txiav tawm ib ntus, khoov thiab sib tsoo ntawm cov yeeb nkab tooj liab yog ib qho yooj yim thiab dawb. Txhua yam ntawm cov kav dej thiab cov khoom siv tuaj yeem sib sau ua ke thiab thauj mus rau qhov chaw, lossis tuaj yeem raug ntsia ib ntus ntawm qhov chaw l, cov nyhuv yog txaus siab. Tooj liab yog ib qho nyuaj hlau uas corrodes. Nws tuaj yeem siv rau ntau qhov chaw tsis muaj kev puas tsuaj. Raws li keeb kwm ntawm kev siv txawv teb chaws, lub sijhawm ua haujlwm ntawm ntau cov kav dej tooj liab tau dhau qhov kev pabcuam lub neej ntawm lub tsev nws tus kheej. Yog li ntawd, cov kav dej tooj liab yog cov kav dej zoo tshaj plaws thiab txhim khu kev qha. Tooj liab yog hlau liab nrog lub ntsej muag ntsuab. Tooj liab inhibits cov kab mob loj hlob thiab ua kom cov dej haus huv. Cov tais diav tooj liab muaj keeb kwm ntev, tsis muaj tshuaj lom thiab tsis qab. Cov kav dej tooj liab thiab fittings tuaj yeem tswj tau lawv cov duab thiab lub zog nyob rau hauv qhov kub thiab txias, thiab yuav tsis muaj qhov tshwm sim ntawm kev laus mus ntev. Cov yeeb nkab tooj liab muaj txheej txheej tawv tawv tiv thaiv, tsis muaj roj, carbohydrates, cov kab mob thiab cov kab mob, cov dej tsis zoo, huab cua lossis ultraviolet lub teeb tuaj yeem dhau los ntawm nws thiab tsis tuaj yeem ua rau nws thiab ua paug dej. Parasites tsis tuaj yeem nyob ntawm qhov chaw tooj liab. Tab sis tus nqi siab ntawm cov yeeb nkab tooj liab yog nws qhov tsis zoo, yog tam sim no cov kav dej zoo. 5. Composite tube Nrog kev txhim kho txuas ntxiv thiab kev txhim kho thev naus laus zis ntawm kev lag luam hauv peb lub teb chaws, cov khoom siv tshiab thiab cov technics tshiab tau txais kev pom zoo hauv cov dej thiab cov kav dej engineering, thiab cov kav dej sib xyaw tau siv dav hauv cov khoom siv dej thiab cov kav dej. (1) aluminium-yas composite yeeb nkab Qhov nruab nrab txheej ntawm aluminium-yas composite pipeline yog ua los ntawm welded txhuas raj, thiab txheej txheej thiab sab hauv txheej yog ua los ntawm nruab nrab ntom los yog high ntom polyethylene yas los yog crosslinked high density polyethylene, uas yog ua ke los ntawm kub yaj nplaum. Cov yeeb nkab tsis tsuas yog muaj lub siab ua haujlwm ntawm cov yeeb nkab hlau, tab sis kuj muaj qhov corrosion kuj ntawm cov yeeb nkab yas. Nws yog cov yeeb nkab zoo tagnrho siv rau kev tsim cov dej. Aluminium yas composite yeeb nkab feem ntau crimped los ntawm daim npav daim npav lub tes tsho, nws cov khoom siv feem ntau yog cov khoom siv tooj liab, nws yog thawj cov khoom siv txiv ntoo teem rau hauv cov yeeb nkab kawg, thiab tom qab ntawd cov tub ntxhais sab hauv ntawm cov khoom siv rau hauv qhov kawg, thiab tom qab ntawd siv cov ciaj ntswj kom nruj. accessories thiab txiv ntseej tuaj yeem ua tau. Kev kub siab ua haujlwm zoo, kev tsim kho yooj yim, txhim kho kev ua haujlwm zoo. Lub sij hawm ntev thermal expansion thiab txias contraction ntawm lub raj xa dej yuav ua rau lub dislocation ntawm cov yeeb nkab phab ntsa uas ua rau to. Aluminium-yas yeeb nkab yog lub luag hauj lwm rau tawg nyob rau hauv siab. Nyob rau hauv cheeb tsam uas lub tswv yim kho kom zoo nkauj yog qhov tshiab, aluminium yas yeeb nkab tau maj mam poob kev lag luam thiab belongs rau cov khoom tshem tawm. (2) steel-yas composite yeeb nkab Steel-yas composite yeeb nkab yog ib tug yeeb nkab lined (coated) nrog ib tug tej thickness ntawm yas composite. Feem ntau muab faib ua cov kab yas steel yeeb nkab thiab coated yas steel yeeb nkab ob. Steel-yas composite yeeb nkab feem ntau txuas nrog xov, thiab nws cov khoom siv feem ntau yog steel-yas khoom. 6, nyias phab ntsa stainless hlau yeeb nkab Nrog txoj kev loj hlob ntawm lub teb chaws kev lag luam thiab kev txhim kho ntawm tib neeg txoj kev ua neej nyob, nyias-walled stainless hlau dej yeeb nkab thiab stainless hlau yeeb nkab fittings tau dhau los ua tus qauv tshiab hauv kev txhim kho cov kav dej hauv tsev. Ua tau raws li kev noj qab haus huv ntawm cov yeeb nkab nyias-walled stainless hlau yuav tsis ua rau cov pa phem thib ob rau cov dej zoo, kom ua tau raws li lub teb chaws ncaj qha dej haus cov qauv. Thin-walled stainless hlau yeeb nkab yog cov yeeb nkab dej uas siv tau ua tiav, thiab yuav tsis tso tseg rau yav tom ntej nrog cov khib nyiab uas tsis tuaj yeem muab pov tseg. Lub zog ntawm cov ntaub ntawv nyias-wall stainless hlau yeeb nkab yog siab dua li tag nrho cov khoom siv yeeb nkab dej, txo qhov muaj peev xwm ntawm cov dej xau cuam tshuam los ntawm kev quab yuam sab nraud, thiab txuag dej ntau. Nyias-phab ntsa stainless hlau yeeb nkab muaj zoo heev corrosion kuj, tsis muaj scaling nyob rau hauv lub sij hawm ntev txoj kev siv, lub puab phab ntsa yog du thiab huv si, tsis tshua muaj zog noj, nqi txuag, yog ib tug kuj tsawg conveying nqi ntawm cov khoom siv dej. Lub thermal rwb thaiv tsev kev ua tau zoo ntawm lub nyias-walled stainless hlau yeeb nkab yog 24 npaug ntawm cov yeeb nkab tooj liab, uas zoo heev txuag lub zog ntawm geothermal poob hauv cov dej kub sib kis. Nyias phab ntsa stainless hlau raj yuav tsis ua paug rau cov khoom siv huv huv, zam cov khoom huv si tsis tuaj yeem txhuam cov "xim liab" thiab "xiav kos". Vim hais tias, tam sim no, nyob rau hauv lub tshav pob ntawm nyias-phab ntsa stainless hlau dej muab cov kav dej thiab fittings, lub ntsiab sib txawv ntawm cov khoom uas zoo sib xws yog qhov sib txawv ntawm kev sib txuas hom, yog li cov hauv qab no qhia txog ib qho yooj yim thiab yooj yim nyias-phab ntsa. Kev sib txuas hom ntawm stainless hlau dej muab kav dej thiab fittings - clamp hom kev twb kev txuas. Ib qho kev sib txuas uas cov yeeb nkab txuas nrog lub qhov (socket) haum nrog lub nplhaib sib khi thiab kaw thiab nruj nruj los ntawm nias lub qhov (socket) nrog lub cuab yeej. Lub hauv paus muaj pes tsawg leeg ntawm cov yeeb nkab clamping yog ib qho tshwj xeeb zoo li cov yeeb nkab sib txuas nrog O sealing nplhaib hauv U-shaped zawj ntawm qhov kawg. Thaum sib dhos. Cov yeeb nkab dej stainless yog muab tso rau hauv cov yeeb nkab haum, thiab cov yeeb nkab haum thiab cov yeeb nkab ntawm qhov sealing yog nyem rau hauv cov duab hexagonal nrog cov cuab yeej sealing, thiaj li tsim kom muaj kev sib txuas kom txaus, thiab cov nyhuv sealing yog tsim los ntawm kev sib khi. compression deformation ntawm lub nplhaib sealing. Tus nqi ntawm cov yeeb nkab fittings yog tsawg, haum rau kev nce qib ntawm kev lag luam hauv pej xeem, kev teeb tsa yooj yim, kev tsim kho ceev ceev. 7. Cam khwb cia hlau yeeb nkab rau cov dej xau cam khwb cia hlau kav dej muaj qhov zoo ntawm corrosion kuj, yooj yim installation, ntev kev pab cuam lub neej (nyob rau hauv ib txwm muaj xwm txheej, kev pab cuam lub neej ntawm underground cam khwb cia hlau kav yog ntau tshaj 60 xyoo) thiab tus nqi qis. . Lawv feem ntau yog siv rau hauv cov kav dej nrog DN ntau dua lossis sib npaug li 75 kas fes, tshwj xeeb tshaj yog rau kev faus. Nws qhov tsis zoo yog brittleness, hnyav hnyav, me me ntev thiab lub zog tsis zoo piv nrog cov yeeb nkab steel. Muaj peb yam uas tsis tshua muaj siab, siab siab thiab siab siab nyob rau hauv cov dej cam khwb cia hlau kav hauv peb lub teb chaws. Nyob rau hauv xyoo tas los no, cov yeeb nkab hlau yeeb nkab tau tsim los ua lub ntsiab riser hauv cov tsev loj loj thiab siv rau hauv cov dej hauv tsev. Cov yeeb nkab hlau muaj cov phab ntsa nyias thiab muaj zog ntau dua li cov yeeb nkab hlau cam khwb cia, thiab nws cov cuab yeej cuam tshuam yog ntau tshaj 10 npaug ntawm cov yeeb nkab grey cam khwb cia hlau. Ductile cam khwb cia hlau yeeb nkab nrog roj hmab nplhaib mechanical kev twb kev txuas los yog lub qhov (socket) kev twb kev txuas, kuj yuav threaded flange kev twb kev txuas. Lwm cov kav dej: Hard polyvinyl chloride yeeb nkab (UPVC) Nyob rau hauv lub ntiaj teb no, nyuaj polyvinyl chloride yeeb nkab (UPVC) yog ib tug ntau yam ntawm yas yeeb nkab noj kuj loj ntau yam. Kev siv cov yeeb nkab zoo li no tuaj yeem txo qhov xwm txheej ntawm steel tsis txaus thiab lub zog tsis txaus hauv peb lub teb chaws, thiab cov txiaj ntsig kev lag luam yog.