2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2024-01-07 20:58
Thaum sib sau cov kev thauj mus los rau ntau lub hom phiaj, piv txwv li, kev sib txuas lus cua sov lossis cov kav dej uas tsim los rau cov roj thiab cov pa roj, kom txog thaum tsis ntev los no, cov kav dej zoo tib yam ua los ntawm cov hlau feem ntau yog siv. Rau feem ntau, cov khoom ntawm hom no tseem tiv tau zoo nrog lawv txoj haujlwm. Txawm li cas los xij, cov kav dej no tseem muaj ib qho teeb meem loj heev. Txawm tias lawv cov phab ntsa tuab npaum li cas los xij, lawv tsis tuaj yeem tiv thaiv cov kua distilled los ntawm lub caij ntuj no txias.
Qhov tshwm sim ntawm cov dej khov los yog cov dej txias hauv cov kab feem ntau yog qhov tsis ua tiav tom kawg. Nyob rau tib lub sijhawm, hauv cov khoom siv hluav taws xob siv hluav taws xob thaum lub caij txias, nrog rau lwm yam, kev poob cua sov tseem ceeb, uas ua rau lawv txoj haujlwm kim dua.
PPU pipes yog dab tsi
Txhawm rau tiv thaiv kom tsis txhob khov ntawm cov kua xa mus raws txoj kev loj, tom kawg, thaum sib sau ua ke ntawm kev sib txuas ntawm txoj kev, txawm tias nteg hauv av tob heev, los yog ntxiv insulated siv.cov ntaub ntawv tshwj xeeb. Ob txoj kev yog siv zog ua haujlwm thiab siv thev naus laus zis. Yog li ntawd, cov kav dej ntawm cov qauv tsim tshwj xeeb - cov kav dej ua ntej-insulated - tau dhau los ua nrov tsis ntev los no.
Cov khoom ntawm hom no yog rwb thaiv tsev ntawm cov theem tsim khoom siv niaj hnub insulator nrog cov qib qis ntawm thermal conductivity - polyurethane ua npuas ncauj. Cov kav dej no kim dua li cov pa. Txawm li cas los xij, cov kab sib sau los ntawm lawv tuaj yeem ua haujlwm rau yav tom ntej yam tsis tas yuav kho ntau xyoo lawm.
PPU yeeb nkab tsim
Outwardly, cov khoom zoo li no zoo ib yam li cov suab puam chimneys uas paub zoo. Ntawd yog, lawv muaj peb txheej tseem ceeb:
- tiag tiag steel yeeb nkab, los ntawm cov kua yuav tsum tau pumped yav tom ntej;
- polyurethane ua npuas ncauj txheej;
- outer container.
Tshiab teeb liab cables khiav hauv polyurethane npuas txheej hauv cov kav dej. Ua tsaug rau lawv lub xub ntiag, ib txwm muaj peev xwm txiav txim siab qhov chaw ntawm kev sib tsoo ntawm txoj kev loj nrog qhov raug siab thiab ua haujlwm kho sai sai.
Dab tsi specifications yuav muaj
Hnub no, cov kav dej ua ntej tau muab tso rau hauv kev lag luam hauv ntau qhov ntau. Cov khoom zoo li no yuav txawv ntawm:
- diameter;
- phab ntsa thickness;
-
insulating txheej thickness;
- tus naj npawb ntawm cov teeb liab cables, thiab lwm yam.
Tus nqi ntawm cov khoom ntawm nontau yam ncaj qha nyob ntawm lawv txoj kab uas hla thiab lub thickness ntawm insulating txheej. Raws li qhov ntsuas tom kawg, cov kav dej PPU raug xaiv coj los siv rau hauv tus account huab cua ntawm thaj av uas lub network yuav tsum tau sib sau ua ke, nrog rau qhov tob ntawm qhov kawg. Hauv cov cheeb tsam sov, cov kav dej uas muaj txheej txheej insulating tuab ntawm 5 cm feem ntau yog sib sau ua ke. Nyob rau sab qaum teb, cov kav dej uas muaj txheej insulating ntawm 10 cm lossis ntau dua yog siv.
Signal cables hauv txheej insulating ntawm cov khoom xws li, nyob ntawm txoj kab uas hla, tuaj yeem tso ob lossis peb.
GOST qauv
Cov kav dej ua ntej yog tsim nyob rau hauv peb lub teb chaws nrog kev ua raws li GOST nruj me ntsis. Lub rwb thaiv tsev siv los tsim cov khoom zoo li no, nyob rau hauv txhua rooj plaub, yuav tsum ua raws li cov cai hauv qab no:
- dej nqus los ntawm ntim - 10%;
- compressive elasticity - tsis tsawg dua 0.3 MPa (deformation nyob rau hauv tag nrho cov lus qhia - mus txog 10%);
- density - txog 60 kg/m3.
Thaum rhuab mus rau 110 ° C, qhov ntev ntawm PPU insulator siv hauv kev sib dhos ntawm cov kav dej yuav tsum tsis pub tshaj 3%.
Polyurethane ua npuas ncauj rau cov yeeb nkab rwb thaiv tsev tuaj yeem ua los ntawm kev siv tshuab sib txawv. Tab sis feem ntau cov khoom no yog tsim los ntawm carbon dioxide thiab freon. Feem ntau, hauv kev tsim cov kav dej PPU, polyurethane ua npuas ncauj ntawm cov khoom lag luam zoo li Dow, Izolan, Huntsman, Elostokam yog siv.
Type by design
Tam sim no, muaj ob lub ntsiab ntawm cov kav dej ua ntej ua ntej ntawm kev ua lag luam:
- hard;
- yoog tau.
Cov khoom ntawm thawj ntau yam yog ua los ntawm cov hlau zoo tib yam lossis galvanized nrog polyurethane npuas rwb thaiv tsev. Sab nraud, cov kav dej no yog sheathed nrog cov nplooj ntawv ntawm cov hlau tawv lossis stainless hlau.
Cov khoom lag luam yooj yim ntawm hom no yog tsim los siv cov cuab yeej zoo sib xws. Txawm li cas los xij, cov kav dej zoo li no tsis yog npog nrog lub tsho ntawm cov hlau, tab sis ntawm cov yas corrugated. Tau kawg, cov khoom zoo li no tsis txawv ntawm kev hloov pauv ntau dhau. Tom qab tag nrho, polyurethane ua npuas ncauj - cov khoom nws tus kheej yog nruj heev thiab tsis dhau elastic. Txawm li cas los xij, tseem tuaj yeem khoov cov kav dej ntawm ntau yam no me ntsis thaum tso.
Tau kawg, hauv kev tsim cov plhaub yas ntawm cov kav dej ua ntej, GOST cov qauv kuj raug soj ntsuam yam tsis muaj kev poob. Siv rau lawv lub rooj sib txoos feem ntau yog cov khoom siv hluav taws xob zoo tshaj plaws.
Qee lub sij hawm tiv thaiv sheaths nrog ib txheej insulating tuaj yeem muab cais los ntawm cov kav dej lawv tus kheej. Nyob rau hauv cov ntaub ntawv no, ua ntej lawv installation, thaum sib sau ua ke cov kav dej, cov kav dej tau raug kuaj xyuas ua ntej kom nruj, thiab tom qab ntawd coated nrog cov tshuaj tiv thaiv corrosion.
Yuav ua li cas txheej txheej insulating siv rau PPU-pipe
Ntau lub tsev tsim khoom hauv tsev tsim cov khoom zoo li no. Pre-insulated kav kuj tau muab rau Lavxias teb sab lag luam, tau kawg, los ntawm txawv teb chaws tuam txhab uas muag.
Kev txiav txim los ntawm kev tshuaj xyuas, cov khoom lag luam hauv tsev ntawm hom no hais txog qhov zoo niaj hnub no ntawm tus nqi qis yog qhov ua tau zoo tsis muaj kev cuam tshuam rau cov khoom tuaj txawv teb chaws. Piv txwv li, tsuas zoo xyuas los ntawm cov neeg siv khoom tau txais cov khoom zoo li no tso tawm los ntawm"Novosibirsk cog ntawm preinsulated kav", "Orlovsky yeeb nkab rwb thaiv tsev", cog "Stroyizolyatsiya" (Seversk), thiab lwm yam.
Txawm li cas los xij, hauv kev tsim cov khoom lag luam, cov kws tshaj lij yam tsis tau poob, thiab lwm yam, xyuas kom meej tias qhov adhesion ntawm polyurethane ua npuas ncauj thiab cov yeeb nkab steel muaj zog li sai tau. Txhawm rau tiv thaiv cov rwb thaiv tsev los ntawm kev swb ntawm cov hlau thiab tuav kom ruaj ntseg li sai tau, ua ntej siv nws, lub hauv paus yuav tsum tau ua tib zoo ntxuav kom ua ib qho chaw ntxhib thaum tshem tawm xeb.
Thaum foaming polyurethane ua npuas ncauj nws tus kheej, cov txheej txheem thermal yuav tsum tau tswj raws nraim. Lub adhesion ntawm cov npuas dej puv sab hauv lub plhaub kuj tuaj yeem txhim kho los ntawm kev kho nrog qhov tso tawm zaum kawg.
Yog li ntawd lub insulator uas tseem tsis tau hardened tsis ntws tawm, ib tug tshwj xeeb hlau plug yog txuas mus rau qhov kawg ntawm cov yeeb nkab. Tom qab cov khoom tau hardened, cov khoom no raug tshem tawm los ntawm pre-insulated PPU yeeb nkab. Cov khoom zoo li no mus muag nrog qhib kawg ntawm polyurethane npuas txheej.
siv thaj chaw
Cov kav dej PPU thoob plaws tam sim no yog, tau kawg, feem ntau hauv kev lag luam. Cov khoom hauv qab no yog siv thaum lub sij hawm sib dhos ua ke:
- roj pipelines;
- gas pipelines;
- steam kab.
Cov kav dej ua ntej insulated feem ntau yog siv rau cov khoom siv cua sov uas tsim los rau kev siv cov kua dej kub. Xws li kev sib txuas lus feem ntau yog mounted hauv kubrhiav kev lag luam ntawm ntau yam tshwj xeeb.
Tsis ntev los no, cov kav dej ua ntej insulated tau pib muaj txiaj ntsig zoo ntawm cov khoom siv pej xeem. Cov koom haum ntawm qhov tshwj xeeb no siv cov khoom no thaum tso cov cua sov hauv nruab nrab thiab cov kav dej hauv cov nroog thiab cov nroog. Kev siv cov kav dej no tuaj yeem txhim kho kev pabcuam pej xeem zoo.
Key Benefits
Cov kav dej ua ntej rau cov cua sov, cov kav dej, cov kav dej, thiab lwm yam, los yog, rau kev sib dhos, yog siv hauv peb lub teb chaws, yog li, feem ntau. Tab sis dab tsi piav qhia txog qhov nrov ntawm cov khoom niaj hnub ntawm hom no?
Qhov zoo tsis muaj xwm txheej ntawm cov kav dej PPU, piv nrog cov pa, suav nrog:
- muaj peev xwm txhim kho kev sib txuas lus sai li sai tau thiab nrog kev ua haujlwm tsawg;
- txo qhov kub poob (feem ntau ntawm 40% txog 2%);
- nce qhov tseem ceeb hauv cov kav dej ua haujlwm;
- nce kev pabcuam lub neej ntawm tes hauj lwm los ntawm 2-5 zaug;
- txo nqi kho cov kav dej.
Vim muaj lub plhaub tiv thaiv, cov kab zoo li no tau xyaum tsis ntshai ntawm kev cuam tshuam rau ib puag ncig hnyav. Nws raug tso cai rau nteg PPU cov kav dej tsis muaj av thiab kev npaj ua ntej. Polyurethane ua npuas ncauj txawv, ntawm lwm yam, nyob rau hauv hais tias nws tsis cia ya raws los ntawm. Yog li ntawd, cov kav hlau steel insulated siv cov khoom siv no tsawg duayooj yim rau xeb.
Flaws
Muaj kev xyaum tsis muaj qhov tsis zoo rau cov kav dej PPU. Tej zaum tsuas yog qhov tsis zoo ntawm cov khoom no yog lawv cov nqi siab. Txawm li cas los xij, qhov kev rho tawm no ntau dua li qhov kev pab cuam lub neej ntev ntawm cov kab PPU thiab qhov tsis xav tau rau lawv cov kev kho tsis tu ncua.
Mounting Features
PPU kav yog tsim, yog li, los ntawm cov hlau zoo. Yog li ntawd, lawv installation yog nqa tawm siv vuam. Tau kawg, kev tso cov yeeb nkab ua ntej insulated thaum lub sij hawm sib dhos ntawm ntau yam kev lag luam thiab kev siv hluav taws xob yog ua los ntawm kev siv tshuab tshwj xeeb. Polyurethane ua npuas ncauj - ib yam khoom, hmoov tsis, tsis kam rau siab kub heev. Yog li ntawd, thaum vuam cov kav dej, cov ntxaij vab tshaus tshwj xeeb yog qhov yuav tsum tau ua.
Tom qab txuas cov ntu, cov kws ua haujlwm ua haujlwm sib sau ua ke PPU kab yuav tsum xyuas qhov zoo ntawm cov seams. Tom qab cov hlau tau txias tag ntawm cov pob qij txha, tshwj xeeb couplings yog siv rau cov kav dej, thiab lwm yam. Ib qho tshwj xeeb ntawm cov qauv tsim ntawm PPU-kab yog tias lawv tau ua los ntawm cov khoom siv cua sov-shrinkable. Tom qab txias, xws li ib tug coupling txo qhov luaj li cas thiab nruj nreem haum rau weld, yog li ua kom tiav nruj. Thaum siv cov khoom docking ntawm hom no, cov kab noj me me tseem nyob ntawm cov pob qij txha ntawm cov kav dej, uas ua npuas dej los yog polyurethane ua npuas dej tom qab nchuav.
Piav saum toj nothev naus laus zis yog siv ob qho tib si hauv kev sib dhos ntawm cov kev lag luam loj thiab kev sib txuas lus hauv tsev me me.
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