Yuav ua li cas zoo dua cov kav dej: polypropylene, hlau los sis yas? Dej kav uas yog zoo tshaj plaws nyob rau hauv lub teb chaws thiab nyob rau hauv lub apartment?

Tam sim no los yog yav tom ntej, cov neeg muaj kev nyuaj siab rau lo lus nug ntawm yuav ua li cas los hloov tus kav dej. Yuav ua li cas yog zoo dua mus xaiv, txiav txim siab los host ib lub tsev los yog chav tsev, thiab qhov no muaj feem xyuam rau qhov zoo kev txiav txim thiab ntev-lub sij hawm kev lag luam ntawm cov dej-mov systems.

Cov kev txaus qhia yog nyob los ntawm cov khoom ntawm polypropylene, HDPE thiab yas, uas yog pib rau displace hlau. Nyob rau hauv cov yam ntxwv ntawm cov ntaub ntawv, nqi, kev khiav hauj lwm tej yam kev mob, thiab nyiaj txiag muaj peev xwm ntawm tus neeg siv nyob ntawm seb lub xaiv cov kav dej. Uas yog zoo dua? Xyuas ntawm cov neeg inclined ntawm cov khoom ua los ntawm polypropylene thiab hlau yas.

polypropylene Kav

Ua ib tug txiav txim txog dab tsi cov dej kav yog zoo tshaj plaws rau nruab rau hauv lub chav tsev yog heev nyuaj. Feem ntau ntawm cov tswv nres rau ntawm polypropylene khoom. Lub raj dej yog tsis folding, welded fittings thiab tsim txhim khu kev qha thiab check sib txuas. Lawv tej zaum yuav txawv configurations: couplings, fab 90 ⁰ thiab 45 ^0, crosses, tees.

Lub ntsiab cuab tam

polifuz (nyob rau ib lub teb chaws - - hlau los yog soldering hlau) ib tug tshwj xeeb cov cuab tam yog siv rau welding. Nyob rau caij cua kub 2 teev nozzle diameters yuav tsum tau. Lawv tso rau hauv cov yeeb nkab kawg li thiab ces Cua sov lawv ua rau 6-10 vib nas this. Ces, kub qhov chaw yog npaum li cas tawm thiab kev cob cog rua. Nyob rau hauv cia li ib tug ob peb lub vib nas this lub welding, muab txhim khu kev qha ob leeg lub zog. Disconnect cov lus ces tsis tau.

Cov khoom tshwj xeeb ntawm lub polypropylene tso cai rau nws siv rau cov cua kub thiab dej. Ib qho ntawm nws variants - "Random copolymer" - yog lub feem ntau thaum tshav kub kub-resistant thiab yog siv qhov twg tso cai dej kub rau 95 ⁰ C, thiab nws nce mus txog 100 ⁰ C nrog malfunction tsis txo cov durability ntawm cov yeeb nkab.

Zoo thiab tsis zoo ntawm cov lub polypropylene khoom

Nyob rau hauv cov kav dej muaj lawv tus kheej zoo thiab disadvantages. Zoo polypropylene hlab raws li nram no:

• kuj mus tshuaj active;
• simplicity thiab poj ceev ntawm installation;
• High ductility kev puas tsuaj ceeb toom peremerzanii yeeb nkab thaum cov dej nyob rau hauv lub system;
• durability thaum siv nyob rau hauv high-tes hauj lwm;
• tej friendliness.

Lub disadvantage ntawm cov kav dej yog lawv rigidity. Raws li ib tug tshwm sim ntawm lawv installation yuav tsum tau ntau TIG fittings. Nyob rau hauv tas li ntawd, lub polymer muaj ib tug ntau dua thermal deformation uas yuav tsum raug xam tias yog thaum lub sij hawm installation. Nyob rau hauv lub qhaj ntawv ntawm thermal compensators yeeb nkab yuav tsum deformed thiab txawm muab rhuav pov tseg.

Polypropylene hlab yog muab faib ua peb yam:

1. PN 10 - tsim rau cov kev mob khaub thuas dej thiab sov plag tsev.
2. PN 20 - rau muab dej kub piping nrog kub txog li 80 ⁰ C (universal).
3. PN 25 - rau cov lag luam nyob rau high school kub (95 ⁰ C).

Cov yav tas hom raj yog tam ntawv ci ntawm txhuas los yog fiberglass. Perforation tso cai hlau tsis mus thov cov nplaum rau cov koom khaubncaws sab nraud povtseg. Lub qhov cuab lub zog tsub kom lub dag lub zog thiab stability ntawm cov khoom. Lub raj tej zaum yuav loj nrog hlau nyob rau sab nraum los yog sab hauv. Aluminium yog siv feem ntau los txo cov thermal expansion.

Fiberglass yog siv tsis tau nplaum khaubncaws sab nraud povtseg. Nws fuses nrog lub polypropylene txheej, muab ib tug zoo zoo kev twb kev txuas.

Muaj pes tsawg leeg cov yeeb nkab

raj qauv muaj 2 khaubncaws sab nraud povtseg ntawm polyethylene PE-X thiab pov tseg ntawm lub txhuas txheej. Hlau ua ke rau yas tshwj xeeb nplaum. Los ntawm nws lub zog yog nyob ntawm seb qhov zoo tshaj ntawm cov khoom. Tag nrho cov manufacturers muaj lawv tus kheej nplaum formulations, lawv tas li kev txhim kho. Lub polymer tsim yooj thiab smoothness, thiab txhuas - lub dag lub zog thiab txo thermal expansion ntawm cov yeeb nkab thaum rhuab. Qhov zoo tshaj plaws kev khoom yam ntxwv yog lub teb chaws Yelemees, Belgium thiab Ltalis.

Ib tug raj kev cob cog rua ntawm lub compression los yog nias fittings. Nyob rau hauv lub yav tas los cov ntaub ntawv yuav tsum tau tsuas yog ib lub ciaj ntswj, thaum lub sij hawm thib ob - ib tug tshwj xeeb lub cuab tam.

Tsib-txheej yeeb nkab qauv muaj ib tug me me thickness, uas ua yooj yim yog fwm cov khoom. Lub txhuas txheej yog heev nyias thiab yog ntau zoo li ib tug ntawv ci tshaj lub txheej ntawm hlau.

Zoo thiab tsis zoo ntawm cov hlau thiab yas

Rau cov khoom uas muaj lawv pros thiab cons. Zoo hlab nram qab no cov khoom:

• yooj feem ntau mus tsis fittings;
• lub teeb yuag;
• kua kub nce mus txog 95 ⁰ C;
• tsawg thermal deformation;
• kuj mus corrosion thiab corrosive npuas;
• heev me ntsis suab nrov thaum thauj kua.

Tsis zoo ntawm cov kav dej raws li nram no:

• combustibility cov khoom;
• ntsiab muaj ntau thermal deformation, uas ua rau delamination ntawm lub nplaum khaubncaws sab nraud povtseg ntawm cov yeeb nkab thiab nyob rau kev twb kev txuas cov ntsiab lus nrog dag fittings;
• phem cov ntaub ntawv uas tiv ultraviolet tawg;
• tsawg zog nyob rau hauv tej yam loads;
• nqaim kev txwv ntawm diameters - 16-33 hli;
• yeeb nkab rupture vim khov ntawm cov dej nyob rau ntawd;
• tus nqi ntawm fittings.

Lwm drawback yog lub roj tso cai ntawm lub haum seem piv rau txoj kab uas hla ntawm cov yeeb nkab. Qhov no ua ntxiv kuj mus zog ntawm cov dej.

HDPE yeeb nkab

Polyethylene (PE) yeeb nkab siv nyob rau hauv ob lub versions: kom muaj thiab haus dej. Nws yog elastic thiab muag nyob rau hauv coils. Vim li no cov mounting yuav tsum tau tsawg dua fittings, uas yog ua los ntawm cov yas.

PE yeeb nkab yog siv mas rau lwm cov kav dej. Nws yog resistant kom tsawg kub sau mus rau -50 ⁰ C. Qhov yooj, durability thiab tus nqi qis tau ua nws nrov rau cov dej haus thiab dej suburban cheeb tsam. Kav ntev exploited, tsis overgrown thiab tsis corrode. Rau cov pa dej kub PE kav yog tsis haum vim hais tias lawv khiav hauj lwm kub tsis ntau tshaj 45 ⁰ C. Peb feem ntau siv ib tug crosslinked polyethylene rau cov kav dej. Yuav ua li cas yog ib qho zoo yog heev ntshiab. Tab sis lawv cov nqi yog ntau ntau, tab sis qhov zoo tshaj thiab.

Yuav ua li cas zoo dua cov kav dej - polypropylene los yog hlau thiab yas?

Nyob rau hauv lub lag luam los ntawm cov hlau cov khoom maj hloov los ntawm cov yas. Yog hais tias koj xav mus yuav cov kav xa dej, uas yog zoo tshaj plaws txiav txim los ntawm tus nqi thiab zoo. Yog li ntawd nws yog tsim nyog los noj mus rau hauv tus account tsis tau tsuas yog tus nqi ntawm cov yeeb nkab, tab sis tseem muaj lwm yam. Polypropylene yog ib tug me ntsis cheaper yas, tab sis ib tug tshwj xeeb cov nyiaj khaws tseg no tiav rau lub fittings. Tsis txhob hnov qab tias installation ntawm cov kav dej yuav tsum tau ib tug welder, rau qhov purchase ntawm uas yuav tsum tau siv. Rau ib tug loj dej mov nqi nws yuav tsis tau zoo heev, txij thaum lub soldering hlau yog ib qho yooj yim los mus kawm rau lawv tus kheej, thiab kev koom tes ntawm cov kws txawj yuav raug nqi considerably kim kim.

Polypropylene hlab yog ua nyob rau hauv ib tug ntau ntawm cov diameters nyob rau hauv cov kev taw qhia ntawm lawv nce ib ncua los ntawm 63 hli. Loj diameters, cov lus nug zoo li cas ntawm cov kav dej yog zoo dua - yas los yog hlau thiab yas, nws yog tsis tsim nyog. Nws yog tseeb hais tias ntawm no nws yog tsim nyog los siv cov polypropylene.

Yas cov khoom muaj ib tug ho me me thermal expansion coefficient tshaj lub polymer vim lub xub ntiag ntawm lub hlau txheej (5-6 lub sij hawm tsawg dua). Yog li ntawd, rau polypropylene kav yuav tsum tau kub compensators nyob rau hauv daim ntawv ntawm cov loops. Muaj cov ntaub ntawv uas sib txawv thermal expansion nyob rau hauv ib tug system thiaj li lub sij hawm ntawm lub lag luam los ntawm cov hlau kav nrog heev kub influences.

Hlau-yas dej yeeb nkab mounted yooj yim thiab yuav tsis tau kim vuam siv lub tshuab rau nws. Communications polypropylene tau collapsible, tab sis lub weld cheeb tsam tsis txawv nyob rau hauv lub dag lub zog ntawm lub raj khoom.

Dej kav tsev

Nyob rau hauv Farmland Irrigation thiab koj tus kheej xav tau kev pab ib txwm nyob rau hauv yuav tsum tau ntawm cov kav dej. Yuav ua li cas yog qhov zoo tshaj plaws nyob rau hauv lub teb chaws? Yuav ua li cas yog ib qhov tseeb yog hais tias qhov no yog qhov khoom ntawm lub IPA, uas outperform lwm yam ntaub ntawv nyob rau hauv cov nram no tsis:

1. Tus nqi rau cov nyiaj.
2. Durability, yooj yim thiab yooj yim ntawm kev.
3. Fittings txhais tes yuav tsum tau tsis muaj tshwj xeeb cov cuab yeej, kev txawj ntse thiab kev txawj ntse.
4. Muaj tshwj xeeb adapters rau installation ntawm li qub thiab kev twb kev txuas ntawm cov kev pab (da dej, dab ntxuav tes, ywg dej ntaus ntawv).

Tag nrho cov Cheebtsam thiab seev muag nyob rau hauv tshwj xeeb khw muag khoom noj. Uas dej tsis cuam tshuam nrog kev tshem rau ntawm qhov chaw, nws muaj peev xwm khawb rau hauv av. Yuav kom tiv thaiv kev puas tsuaj rau cov yeeb nkab vaj lub cuab tam rau nws paving trench ntawm yas tais, them nrog sab saum toj tuav. Lub raj dej yuav tsum tau muab teem txhua xyoo, tiam sis nws kuj tshuav nyob rau hauv qhov chaw. Ces lub caij ntuj no lub sij hawm rau cov dej yog drained tawm ntawm nws, thiab lub system twb purged nrog, e.g., siv ib lub tshuab nqus tsev ntxhua khaub ncaws.

nrog dej mov

Yuav ua li cas zoo dua kev siv ntawm cov kav dej nyob rau hauv lub teb chaws, nyob rau hauv ib lub teb chaws lub tsev los yog hauv ib chav tsev nyob rau thaj chaw? Kev yam ntxwv ntawm polypropylene thiab hlau kav uas tso cai rau lawv mus kawm ntaub ntawv thov kev nrog siv. Lawv yog cov yooj yim mus nkaum qab ib tug muab faib los yog nyob hauv pem teb, uas preserves lub sam xeeb ntawm lub sab hauv. Muab txhim khu kev qha kev sib txuas los ntawm lub raj txia. Yog hais tias lub manifest shortcomings, nws yog feem ntau vim tsis yog installation los yog technology.

xaus

Muaj ntau cov tswv pom tau tias nws nyuaj mus xaiv tus kav dej. Yuav ua li cas yog qhov zoo tshaj plaws ntawm cov uas twb hom, nws yog ib qhov nyuaj los mus txiav txim, vim tus hlau-yas thiab polypropylene cov khoom muaj lawv pros thiab cons. Tag nrho cov no yog thaws rov los nyob rau hauv cov yam ntxwv ntawm cov khoom, uas yog ib txwm yuav tsum tau kawm rau kev nthuav dav. Yuav ua li cas zoo dua rau muab tso rau cov kav dej nyob ntawm qhov zoo tshaj, yam ntxwv, nyiam fwjchim luj kawg nkaus thiab lawv cov nyiaj txiag muaj peev xwm.

HDPE kav muaj ntau haum rau lub vaj thiab sab nraum zoov cov dej haus. Rau nqi thiab cov yam ntxwv, lawv yog cov nyob deb ua ntej ntawm kev sib tw.