Txoj kab uas hla thiab qhov ntev ntawm cov kav dej cam khwb cia hlau. Hom thiab nta

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Cov kav hlau cam tau siv niaj hnub no hauv kev tso cov kav dej tawm sab nraud thiab sab hauv. Cov khoom tuaj yeem yog channelless thiab channel. Lawv lub neej ua haujlwm tuaj yeem ncav cuag 100 xyoo. Kev sib txuas cov ntsiab lus thiab ntau yam ntawm cov kav dej phwj yog txiav txim siab los ntawm GOST 6942-98. Tom qab nyeem cov ntaub ntawv, koj yuav nkag siab tias cov kav dej yuav tsum muaj dab tsi.

Dimensions thiab diameters

Thaum xav txog qhov ntev ntawm cov kav dej cam khwb cia hlau, koj yuav tsum paub tias hnub no muaj peb qhov ntau thiab tsawg. Lawv txawv nyob rau hauv cross section. Cov hom tseem ceeb yog SMU thiab SME. Cov yav tas muaj du kawg, lub tom kawg muaj ib kawg du thiab lwm yam muaj ib tug tswb. Tubular cov khoom raug cim raws li qhov nominal seem.

Saib ntawm cov ntawv sau, hauv nws thawj ntu koj yuav pom cov khoom lag luam. Ntxiv musqhov nominal cross section yog qhia. Piv txwv li, yog tias lub cim zoo li no: Dn 100, thaum lub taub sab hauv yuav yog 100 hli, thiab sab nrauv yuav yog 110 hli. Xav txog qhov ntev ntawm cov kav dej cam khwb cia hlau, koj yuav tsum xyuam xim rau cov khoom siv nrog lub qhov (socket), uas tau muab faib ua peb chav kawm. Txhua tus ntawm lawv muaj nws tus kheej phab ntsa tuab thiab raug xaiv los ntawm cov ntawv A, B lossis LA.

Los ntawm lub rooj loj ntawm cov kav dej cam khwb cia hlau, koj tuaj yeem pom tias cov khoom muaj ib txoj kab nruab nrab ntawm 81 txog 429 hli. Thiab ib qho ntawm cov cim tseem ceeb - cov kab lus raws li qhov sib txawv ntawm 65 mus rau 400 hli. Raws li rau phab ntsa thickness, nws tsis tuaj yeem txawv, thiab nyob ntawm qhov no, cov yeeb nkab yog nyob rau hauv chav kawm A yog tias lub thickness txawv ntawm 7.4 mus rau 13.8. Thaum cov yeeb nkab belongs rau chav B, phab ntsa thickness txawv ntawm 8 mus rau 15 hli, tab sis. rau cov yeeb nkab ntawm chav kawm LA, phab ntsa tuab ntawm 6.7 txog 12.5 hli.

Qhov hnyav ntawm cov yeeb nkab nyob ntawm qhov ntev. Piv txwv li, yog tias koj muaj Du50 yeeb nkab nyob rau hauv pem hauv ntej ntawm koj, ces nws qhov hnyav yuav yog 11 kg. Ib lub DN 1000 yeeb nkab yuav hnyav 620 kg. Qhov nruab nrab ntawm 40 thiab 25 kg yog qhov tseeb rau cov kav dej DN150 thiab DN100, feem. Tab sis qhov loj no yog assumed. Tej zaum nws yuav txawv ntawm qhov tiag. Vim qhov hnyav hnyav, cam khwb cia hlau cov khoom raug muag hauv ntu, qhov ntev ntawm qhov txawv ntawm 0.75 txog 7 m.

Thaum xav txog qhov loj ntawm cov kav dej cam khwb cia hlau, koj yuav tsum xav txog tias koj yuav tsum tsis txhob yuav cov khoom uas muaj phab ntsa tuab yog tias lub siab nyob hauv lub cev qis. Qhov no yuav txo cov nqi yuav khoom nrog rau kev teeb tsa thiab kev thauj mus los.

Awqhov (sockets) thiab lawv qhov ntau thiab tsawg

Qhov qhov ntev ntawm lub qhov (socket) ntawm cov kav dej cam khwb cia hlau yog txiav txim siab los ntawm hom ntawm cov khoom no, uas tuaj yeem yog I, II, III thiab IV. Qhov ntev thiab tsim ntawm lub tswb hom 1 txawv ntawm qhov seem. Yog hais tias lub nominal bore yog 50 hli, lub qhov (socket) txoj kab uas hla yog 55 hli. Thaum lub orifice nce mus txog 150 hli, sab hauv txoj kab uas hla ntawm lub qhov (socket) ua 155 hli. Nyob rau hauv cov ntaub ntawv no, lub sab nraud diameters ntawm lub qhov (socket) yuav sib npaug zos rau 90 thiab 202 hli, feem.

Hauv seem no, koj tuaj yeem xav txog qhov ntev ntawm 100 mm cam khwb cia-hlau kav dej. Nyob rau hauv rooj plaub no, lub puab txoj kab uas hla ntawm lub qhov (socket) yuav yog 123 hli. Nrog rau qhov nce hauv qhov nominal bore mus rau 150 mm, lub puab kab uas hla ntawm lub qhov (socket) nce mus rau 176 mm.

hom tseem ceeb thiab lawv cov yam ntxwv

Cov khoom piav qhia tuaj yeem ua rau lub qhov (socket), tsis muaj qhov (socketless), siab thiab tsis muaj qhov siab. Hauv ntau qhov kev lag luam, cov kav dej, uas yog luv luv VSHCHG, tau pom lawv daim ntawv thov dav. Raws li ib feem ntawm cov yeeb nkab zoo li nodular graphite ua rau cov khoom lag luam elastic thiab khov. Xws li cov kav dej hloov cov analog ntawm grey cam khwb cia hlau. Raws li lawv cov khoom, lawv tuaj yeem sib npaug rau cam khwb cia thiab forged steel. Nyob rau hauv cov nqe lus ntawm cov yam ntxwv ntawm txhua yam, cov kav dej no tuaj yeem sib tw nrog cov khoom siv hlau vim qhov siab coefficient ntawm corrosion kuj. Lawv lub neej kev pabcuam yog 8 npaug siab dua li cov analogues. Cov khoom siv siab tuaj yeem siv los ua haujlwm nrog cov khoom hnyav. Lawv ua tau zoo nyob rau lub caij ntuj no. Lawv tsis ntshaidej khov.

Cov kav dej yog cov kav ntev, uas txhais tau hais tias lawv tuaj yeem muab tso rau hauv txoj kev loj, thaum lub qhov tob ntawm kev teeb tsa tuaj yeem ua tau zoo heev. Xws li cov kav dej cam khwb cia hlau, qhov ntev thiab GOST ntawm cov uas tau hais los saum no, tuaj yeem ua tswb-puab lossis muaj roj hmab foob.

Free-flow kav thiab lawv cov khoom

Cov khoom muaj lamellar graphite, yog li cov khoom tsis muaj lub zog tsim nyog. Grey cam khwb cia hlau yog siv rau lawv siv. Cov kav dej zoo li no tau nruab rau hauv cov tshuab uas tsis suav nrog kev thauj khoom siab. Lawv tuaj yeem txuas nrog cov kav dej yas.

Koj tuaj yeem siv cov roj hmab cuffs kom tau txais kev sib txuas ruaj ntseg. Cov txiaj ntsig tseem ceeb ntawm cov kav dej cam khwb cia hlau, qhov ntev ntawm cov uas tau hais los saum no, suav nrog kev siv sijhawm thib ob tom qab dismantling.

Socketless kav thiab lawv cov khoom

Cov khoom muaj graphite. Rau lub zog ntau dua, cov phab ntsa hauv cov yeeb nkab yog coated nrog epoxy resin. Qhov no tso cai rau koj kom tshem tawm cov tsim ntawm txheej thiab silting. Epoxy resin ua tau zoo nyob rau hauv ib qho chaw nruj heev thiab txuag cov khoom ntawm corrosion thiab puas. Lub rooj ntawm txoj kab uas hla ntawm cov kav dej cam khwb cia hlau yuav tso cai rau koj kom nkag siab yam tsis muaj cov khoom piav qhia. Raws li SML, uas tseem hu ua socketless, nws tsis tas yuav tsim kev tiv thaiv suab nrov ntxiv.

Cov khoom ua tau raws li qhov yuav tsum tau muaj kev nyab xeeb hluav taws, muaj peev xwm tiv taus cua sov thiab muaj lub zog siab. Clamps yog siv los txuas cov ntsiab lus ntawm qhov system. Qhov no yog vim tsis muaj qhov (sockets) ntawm qhov kawg. Xws li cov kav dej ua ntej tau paub txog thaum ntxov 60s. Nyob rau hauv cov hnub, engineers ua hauj lwm nyob rau hauv lub creation ntawm tshiab technologies thiab cov ntaub ntawv. Niaj hnub no, socketless designs tseem ntseeg tau thiab raug suav hais tias yog ib txoj hauv kev zoo ntawm kev tsim khoom, cov pob qij txha ntawm cov pob qij txha uas nruj heev yam tsis siv cov khoom sib khi. Qhov no yog vim tsis muaj tswb.

Cov txheej txheem sab hauv ntawm cov khoom yog du heev, yog li lawv txawv ntawm cov analogues hauv kev nce ntxiv. Qhov tsis muaj corrosion piav qhia qhov hnav tsis kam. Cov khoom no tuaj yeem ua haujlwm ntawm qhov kub thiab txias, lawv tuaj yeem tiv taus cov dej ntws zoo. Cov yeeb nkab yog yooj yim rau txheej txheem, ntxiv rau, nws muaj graphite. Ua tsaug rau nws, lub zog ntawm cov khoom ua tau zoo heev. Phab ntsa thickness tsis hloov raws qhov ntev.

Cov khoom ntawm lub qhov (socket)

Cov kav dej no tseem nrov niaj hnub no, txawm tias muaj kev nyab xeeb ntawm kev lag luam nrog cov ntaub ntawv tshiab. Lawv siv nyob rau hauv ntau yam lag luam, thiab lawv lub ntsiab kom zoo dua yog ib tug nce kev pab cuam lub neej, uas yog tshwj xeeb tshaj yog muaj tseeb thaum piv nrog rau lwm yam analogues. Qhov no yog vim qhov tseeb tias cov hlau pib xeb dhau sijhawm. Qhov tsis zoo yog qhov brittleness ntawm cam khwb cia hlau. Kev siv zog ua haujlwminstallation yog qhov nyuaj dua piv rau lwm cov kav dej. Txhawm rau tshem tawm cov teebmeem ntawm corrosion, cov khoom yog coated sab hauv thiab tawm nrog bitumen.

Tus nqi kav

Qhov ntau thiab tus nqi ntawm cov kav dej cam khwb cia hlau los ntawm cov ntawv teev npe tuaj yeem pom. Piv txwv li, ib tug yeeb nkab, qhov ntev yog 2 m, thiab raws li txoj cai yog 50 hli, nqi 1091 rubles. Ib tug yeeb nkab nrog ib tug nominal bore ntawm 100 hli thiab ib tug ntev ntawm 2 m yuav raug nqi 1,765 rubles. Yog hais tias qhov xwm txheej nce mus rau 150 hli, thiab qhov ntev tseem zoo ib yam, ces tus nqi ntawm cov khoom no yuav sib npaug rau 3222 rubles. Koj tuaj yeem yuav ib lub 'meter' ntev cam khwb cia-hlau yeeb nkab nrog lub bore 50 hli rau 978 rubles

Txoj kev teeb tsa thiab docking

Thaum lub sijhawm teeb tsa, kev saib xyuas tshwj xeeb yog them rau cov khoom ntim khoom. Txhawm rau kom ua tiav qhov txiaj ntsig zoo, koj yuav tsum npaj lub putty yam tsis muaj ntoo pov tseg thiab impurities. Ua ntej sau lub qhov (socket) nrog sib tov ntawm asbestos cement, nws yog ib qhov tsim nyog los sau nws nrog tarred hemp strand. Tom qab ntawd nws yog folded nrog ib tug tourniquet thiab caulked rau hauv lub qhov ntawm lub tswb. Yuav tsum ceev faj.

Lub thickness ntawm lub pob yuav tsum siab tshaj qhov dav ntawm qhov sib txawv, qhov ntev yuav tsum yog xws li cov strand nkag mus rau hauv lub qhov (socket) 30 hli ntawm ntug. Kom tau txais kev sib xyaw ntawm cov cement thiab asbestos, sib tov Portland cement qib 400 thiab asbestos fiber. Cov khoom xyaw no sib xyaw ua ke ntawm 70 txog 30.

Ua ntej siv, qhov sib tov yog moistened los ntawm kev ntxiv dej hauv ntim ntawm 12% los ntawm qhov hnyav. Docking ntawm fittings nrog cam khwb cia hlau kav yog nqa tawm los ntawm kev kaw qhov khoob uas tshwm sim ntawm lub puab nto ntawm lub qhov (socket) thiab qhov haum los yog qhov kawg ntawm cov yeeb nkab. Thaum txhim kho cov yeeb nkab, kev taw qhia ntawm lub qhov (socket).yuav tsum muaj kev ruaj ntseg nyob rau hauv qhov opposite direction ntawm cov dej txav.

Nyob hauv kaw

Ntawm lub ncov ntawm kev muaj koob meej niaj hnub no, cov kav dej yas. Cov cheeb tsam ntawm lawv cov kev siv yog dav, tab sis thaum txhim kho cov kav dej phwj tuaj, cov khoom siv hlau thiab cov hlau cam khwb cia nyob rau hauv txoj hauj lwm ua. Lawv yog cov hnav-tiv taus, muaj cov yam ntxwv zoo soundproofing, muaj zog thiab muaj qhov pom kev ncab, uas yog qhov tseem ceeb rau kev ua haujlwm mus sij hawm ntev.