Hom ntawm cov kav dej: txheej txheem cej luam, cov yam ntxwv, nta thiab xyuas mounting

Thaum nws nqa pipeline tso, durability thiab kev cia siab ntawm lub cev txiav txim los ntawm cov kev xaiv ntawm cov kav dej. Lawv yuav tsum tau muaj ib tug ntev kev pab cuam lub neej thiab muaj corrosion resistant. Ib qho tseem ceeb kuj yog ib tug nqi tsim nyog. Yuav luag tag nrho cov hom ntawm cov kav dej, uas yog muaj hnub no, cov niaj hnub ua lag luam, rau ib co raws li tau raws li cov uas yuav tsum tau. Txawm li cas los, lawv yuav tsum tau xaiv kev noj mus rau hauv tus account lub hom phiaj thiab txoj kab uas hla.

Lub ntsiab ntawm ntau yam steel kav

Xav lub hom steel kav, nws yog ib qho tseem ceeb them sai sai mus rau txoj kev ntawm lawv cov khoom. Nyob rau hauv lub tsim txoj kev muaj peev xwm muab tau welded los yog weldless khoom. Cov yav tas hom muaj ib tug high cia siab rau, tab sis tus nqi yuav siab dua. Steel kav yus muaj los ntawm:

• plasticity;
• sib zog hnyav;
• lub dag lub zog;
• muaj peev xwm mus yauv mus siab nrog siab.

Qhov luaj li cas ntawm cov khoom no yog txiav txim los ntawm cov pa nrog zaj. Tag nrho cov hom ntawm cov hlau kav muaj ib tug zoo disadvantage, uas yog qhia nyob rau hauv uas tsis muaj xeb kuj. Manufacturers tseem tabtom mus tshem tawm no disadvantage los ntawm daim ntawv thov ntawm anti-xeb txheej los yog siv mus rau theem ntawm zus tau tej cov alloying hais, uas tso cai rau kom tau stainless steel hlab.

Xav hom kav uas yog ua los ntawm steel, galvanized yuav tsum muab sau ua ke tsis tau ntxiv kev tiv thaiv. Uas tseg tau yuav tsum tsuas yog ua nyob rau hauv cov chaw uas lub carving tau ua ntawv thov. Galvanized khoom uas tej zaum raug xa mus rau tin, lawv yog siv rau kev kho ntawm kua, cua sov tshuab thiab kav xa dej.

Xav hom compound kav, nws yuav tsum tau muab sau tseg tias hluav taws xob vuam sawv raws li feem ntau haum txoj kev raug ntawm cov hlau. Weldability kav yog txo yog tias cov tshuaj muaj pes tsawg leeg yog muaj nyob rau hauv ib tug loj npaum li cas ntawm cov pa roj carbon. Qhov no txoj kev yuav tsis yooj yim kuj vim lub zinc coating.

Lub ntsiab ntawm ntau yam hlau kav

Kws txawj lawv cheeb tsam yuav tsum tau paub hom hlau kav, nws yog tsim nyog los paub qhov txawv ntawm lawv:

• txhuas;
• tooj liab;
• steel;
• cam khwb cia hlau;
• titanium.

Lawv yog siv nyob rau hauv hnub no yuav luag tag nrho cov cheeb tsam ntawm kev lag luam. Ntawm dub yeeb nkab ua kuav los tiag siab thiab uas tsis yog-siab khoom, uas yuav ua tau ib feem ntawm lub teeb luag hauj lwm los yog lub hwj huam hlau lug. Tej khoom uas yog siv ntau dhau thiab kho ntawm huab cua ducts thiab tog vaj tog tsev. Lawv tsiag ntawv los ntawm high nplhaib nruj thiab lub peev xwm ntawm lub siab kuj ntawm lub longitudinal thiab transverse loads. Cov kav dej no tsis tsis muaj drawbacks, uas yog qhia nyob rau hauv lub nyhav rau corrosion thiab nqi.

Nta installation ntawm hlau kav

Thaum assembling ntawm steel lug thiab kav siv plaub yooj yim txoj kev uas cov pob qij txha ua:

• soldering;
• flare kev twb kev txuas;
• vuam;
• ib tug threaded kev twb kev txuas.

Vuam thiab brazing muaj ib, thiab rau tom kawg yog ib yam ntawm cov kev kho mob xyaum nyob rau hauv maj mam loaded tshuab. Qhov no yuav tsum muaj xws li domestic cua kub los yog ntsuas seev. Nrog kev pab los ntawm vuam peev xwm ua tau impressive tau. Qhov no mounting txoj kev yog siv tsis tau tsuas yog nyob rau hauv kev lag luam, tab sis kuj nyob rau hauv lub neej txhua hnub.

Lwm yam kev hlab tej zaum yuav mounted ntawm releasable kev sib txuas, no yuav tsum tau ntaus nqi qhov socket thiab xov. Nyob rau hauv lub caij nyoog kawg no cov ntaub ntawv, qhov xaus thiab fittings yog ua los ntawm lub tiav lawm thread. Profile li yuav ua tau Trapezoidal los yog voos.

Taub qab teem lub haum thiab cov kev sib koom txoj hauj lwm yuav tsum tau supplemented nrog ib tug xauv noob txiv nrog ib tug foob. Lub funnel yog ntsia thiab hais tias yog yooj yim rau qhov no yuav xaus li no tso tus taub qab. Txais insulate lub abutment los yog kev sib khi tov siv Kabolka uas yog ib tug cob hlua.

Hom ntawm profile kav

Yog hais tias koj xav nyob rau hauv cov khoom piav nyob rau hauv tsab xov xwm, koj yuav tsum xav txog kuj cov profile kav. Nyob rau hauv daim ntawv lawv yog:

• square;
• pav ca-dawb;
• lub;
• oval.

Rau txhua hom muaj ib tug txhais uas pab. Piv txwv li, tiaj dawb muaj ib tug high yooj, uas tso cai rau kev siv ntawm tej kav dej nyob rau hauv lub rooj tog kev lag luam, qhov twg nws yog feem ntau tsim nyog nyob rau hauv qhov siv thiab ua hniav ntsiab.

Square thiab lub hom profile kav muaj xws li qhov ntev uas yog yooj yim rau siv nyob rau hauv kev tsim kho ntawm lug yuav tsum tau muab tso rau hauv ib tug ca saum npoo. Siv xws li cov yeeb nkab fittings thiab siv mus tsim lub tog raj ncej designs.

Lub ntsiab ntawm ntau yam yas kav

Hom ntawm yas kav hais niaj hnub mus muag ntau ntau yam, nws yog tsim nyog los paub qhov txawv ntawm lawv:

• PVC.
• PP.
• PE.
• PEX.
• PEX-AL-PEX.

Thawj tsiaj ntawv stands rau cov nram qab no: polyvinyl tshuaj dawb, thaum lub sij hawm thib ob yuav lub polypropylene kav. Lub los PE ntawd hais tias ua ntej koj cov yeeb nkab uas ua los ntawm polyethylene, whereas lub sewn propylene xaiv los ntawm peb cov tsiaj ntawv - PEX. Qhov kawg ntawm lub aforementioned cim qhia cov hlau kav.

Specifications ntawm yas kav

Tom qab xav tias tag nrho cov hom ntawm cov hlau kav, muaj peev xwm yuav nrhiav tau nyob rau hauv ntau yam nrog yas khoom. Piv txwv li, polypropylene yuav muaj ib tug plaub-meter raj ntev, whereas txoj kab uas hla mas nws txawv ntawm 16 mm rau 1.25 m.

Kev cob cog rua cov yeeb nkab fittings los yog nrog tshwj xeeb khoom, uas yog hu ua tus apparatus rau lub thermoplastic welding. Polyethylene kav yuav siv tau rau lub rooj sib txoos ntawm sab nraud thiab sab hauv siab piping systems. txheem Lub siab ntawm 6 atmospheres, uas yog muaj tseeb rau cov kav dej nrog txoj kev xaiv "C". Lub siab nce mus rau 10 atmospheres, nyob rau hauv cov ntaub ntawv ntawm cov kav dej nyob rau hauv lub daim ntawv lo "T".

Yog hais tias peb los sib piv xws hom hlab, nws yuav sib cav hais tias polyethylene khoom yuav raug packing txawm nyob rau hauv lub qis tshaj kub thaum kub poob rau -20 ° C. Thaum txoj kab uas hla txawv nruab nrab ntawm 20 thiab 63 hli, cov khoom muaj kev cob cog ua ke los ntawm roj hmab gaskets los yog rings. Koj siv tau cov nyob rau hluav taws xob welding.

Thaum txoj kab uas hla yog nce mus rau 60 hli thiab nce mus txog 160 hli, cov kev twb kev txuas yog nqa tawm thiaj tau tuaj los ntawm txoj kev taub qab vuam. Tam sim no koj paub lub diameters, hom kav, tab sis nws yog ib qho tseem ceeb thaum twg yog xav yas khoom paub hais tias lawv yuav tsum tau muab faib mus rau hauv yeeb nkab siab thiab tsis tshua muaj siab. Tsis siab muaj ib lub cheeb nyob rau hauv lub chav 50 mus rau 110 hli. Tej kav dej uas siv rau tso dej systems.

Xyuas ntawm lub cam khwb cia kav PEX

Raws li buyers, xws crosslinked polyethylene kav siv tau rau cua sov tshuab thiab dej. Lawv muab tso rau los ntawm ib tug los ua ke ntawm qhov chaw. cov ntaub ntawv yeeb nkab rau installation ntawm hauv pem teb cua kub systems thiab melting daus yog haum ntau. Yuav kom tiv thaiv lub nkag mus ntawm oxygen mus rau hauv cov yeeb nkab los npog lawv tau txais kev pab yuav tsum tau diffusion barrier.

Xyuas ntawm lub hlau-yeeb nkab

Cov hlab tau invented tsis yog li ntawd ntev dhau los, tab sis twb tswj kom tau chaw. Lawv xub tshwm sim nyob rau hauv ces, thiab niaj hnub no tau txais kev pab siv lawv ntau heev. Lawv yog ua los ntawm cov ntaub ntawv nrog tas li ntawd ntawm lub tshav kub-resistant polyethylene, pa polyethylene thiab txhuas. Cov neeg muas zaub xaiv yas kav rau yog vim li cas hais tias lawv muaj peev xwm ua siab ntev nyiaj hnyav loads.

Lawv yuav siv tau txawm rau systems uas yuav nyob rau hauv kev sib cuag nrog cov dej haus. Cov me me thermal expansion thaum lub sij hawm lawv lub lag luam. Buyers taw tes kom paub tias cov sab nraud hloov thiab hnav thaum lub sij hawm siv yog yuav luag muaj. Muab lawv nyob rau hauv ib tug ntawm ob txoj kev, namely los ntawm lej thiab screwing.

Nta installation ntawm polypropylene kav

Tej kav yuav tsum tau tsau mus rau lub phab ntsa los ntawm clamps, threading lawv mus rau hauv cov khoom. Nws yog ib qho tseem ceeb yuav tau nco ntsoov hais tias cov lwm cov cua kub yuav tsum tsis coj polypropylene hlab rau boiler khoom. Lawv twb kev txuas yog ua los ntawm txoj kev adapters uas phooj ywg nrog cov hlau yeeb nkab. Qhov ntev ntawm lub yav tas yuav tsum mus txog 0.5 m.

Yog hais tias cov kev sib piv ntawm welded pob qij txha nrog cov ntsia hlau, lub yav tas yog tsis tau txais kev pab, uas yog vim li cas tej khoom yuav pw hauv lub phab ntsa. Txawm li cas los, cov system rau pre-soj ntsuam txog kev ceev ceev thiab kev cia siab. Cov tib pom zoo siv rau cov lus xaus ua crimp inserts.

xaus

Cam khwb cia hlau kav niaj hnub no tseem haum ntau. Tab sis lately, lawv tso tseg rau hauv dej siab ntawm cov khoom los ntawm ntau niaj hnub cov ntaub ntawv, uas tau piav saum toj no.

Qhov no yog vim tej nta ntawm cam khwb cia hlau, vim hais tias nws tsis yog haum rau siv nyob rau hauv cov mos mos hauv av, raws li tau zoo raws li qhov chaw nyob qhov twg siab seismic uas muaj feem yuav. Ntawm lwm yam, xws kav muaj impressive luj, brittleness nce, thiab cov kev siv thiab yuav siv sij hawm ib tug ntau ntawm cov hlau. Yuav kom manufacture ib cov yeeb nkab uas me me lub cheeb thiab puas problematic.