Daim Ntawv Qhia Txog Kev Tiv Thaiv Hluav Taws Kub Npauj Npaim Valve

Cov npauj npaim tiv thaiv hluav taws yog qhov tshwm sim ntau heev hauv kev tsim cov tshuab tua hluav taws.

Lawv feem ntau yog siv los tswj cov dej ntws. Lawv qhib thiab kaw sai sai. Lawv me me thiab yooj yim rau kev teeb tsa.

Piv nrog rau cov qhov rooj vag lossis cov qhov rooj thoob ntiaj teb, cov qhov rooj npauj npaim xav tau lub zog ua haujlwm tsawg dua. Qhov no ua rau lawv tsim nyog rau cov kav dej loj.
Koj feem ntau tuaj yeem pom lawv ntawm cov kav dej tseem ceeb ntawm cov tshuab tua hluav taws sab hauv tsev, cov tshuab txau dej tsis siv neeg, cov qhov hluav taws xob, cov tshuab muab dej faib ua zoned, thiab cov kav dej tua hluav taws sab nraum zoov.
Lawv nyob txhua qhov chaw hauv cov tshuab tua hluav taws. Vim li no, feem ntau lawv raug suav tias yog qhov tseem ceeb.

1. Dab tsi ua rau lub Butterfly Valve "Qib Tiv Thaiv Hluav Taws"

1.1 Lub ntsiab lus ntawm Lub Voj Voog Tiv Thaiv Hluav Taws.

Cov li qub tiv thaiv hluav taws feem ntau hu ua cov li qub teeb liab hluav taws lossis cov li qub hluav taws tshwj xeeb.

Lub qhov hluav taws kub tiv thaiv npauj npaim valve tsis yog txhais los ntawm nws qhov tsos lossis lub npe.
Nws yog hais txog lub valve npauj npaim uas tsim nyog rau kev siv hauv cov tshuab tua hluav taws. Nws feem ntau yog siv los tswj cov dej ntws hauv cov kav dej hydrant lossis sprinkler.

Qhov sib txawv tseem ceeb ntawm lub valve npauj npaim ib txwm yog qhov no:
Nws tuaj yeem xa cov teeb liab qhib lossis kaw lub sijhawm tiag tiag mus rau qhov chaw tswj hluav taws.

Tsis tas li ntawd xwb, lub qhov hluav taws kub tiv thaiv npauj npaim yuav tsum ua haujlwm tau zoo nyob rau hauv cov xwm txheej hluav taws kub heev, suav nrog:

* Lub sijhawm ntev static siab
* Lub siab nce siab sai sai thaum lub twj tso hluav taws pib
* Lub rauj dej thaum lub sijhawm ua haujlwm valve lossis hloov pauv system
* Kev ua haujlwm txhim khu kev qha hauv cov xwm txheej ceev

1.2 Vim li cas cov npauj npaim valve thiaj siv rau hauv cov tshuab tua hluav taws?

Kev ua haujlwm 90-degree rau kev teb sai
Kev tiv thaiv disc qis thiab kev tswj hwm kev poob siab
Pheej yig dua li cov qhov rooj vag rau cov qhov loj me

2. Cov Hom thiab Cov Khoom Siv ntawm Cov Li Qub Tiv Thaiv Hluav Taws Kub

Feem ntau cov npauj npaim tiv thaiv hluav taws yog hom grooved lossis hom flanged.
Lawv muaj cov teeb liab qhia qhov chaw. Qhov xwm txheej qhib thiab kaw tuaj yeem xa mus rau chav tswj hluav taws.

2.1 Hom Kev Sib Txuas

2.1.1 Lub Vev Npauj Npaim Grooved

Cov grooves raug txiav ntawm cov yeeb nkab kawg thiab txuas nrog cov couplings.
Kev teeb tsa yog ceev thiab tsis tas yuav vuam.
Grooves hom npauj npaim valvetsim nyog rau cov tsev tshiab thiab kev kho dua tshiab ntawm qhov chaw.
Ntau tshaj 80% ntawm cov tshuab tua hluav taws siv hom no.

2.1.2 Wafer Npauj Npaim Valve

Lubwafer hom valvelub cev tsis muaj flanges thiab ncaj qha clamped ntawm cov flanges ntawm ob lub kav dej.

Nws yog qhov me tshaj plaws thiab sib dua, tab sis yuav tsum tau ua kom raug thaum lub sijhawm teeb tsa.

2.1.3 Lub Rooj Vag Npauj Npaim Flanged

Ob qho kawg muaj flanges thiab raug kho nrog bolts.
Kev sib khi yog qhov txhim khu kev qha thiab kev txij nkawm yooj yim.
Hom no feem ntau siv rau cov kav dej siab dua lossis cov kav dej loj dua.

2.2 Hom Kev Sib Nqus

2.2.1 Lub Rooj Zaum Mos Mos Npauj Npaim Valve

Siv roj hmab sealing. Kev kaw nruj nreem.
Haum rau dej huv ntawm qhov kub ib txwm.

2.2.2 Hlau Zaum Npauj Npaim Valve

Hlau-rau-hlausealing. Zoo dua rau kev siab dua.
Haum rau cov dej uas muaj cov khoom tsis huv.

Rau cov ntaub ntawv, lub cev valve feem ntau yog hlau ductile nrog epoxy txheej rau kev tiv thaiv corrosion.
Lub disc yog ductile hlau nrog nickel txheej lossis stainless hlau.
Lub qia yog stainless hlau.

Cov dej hluav taws feem ntau tsis txav mus los ntev. Kev pheej hmoo ntawm kev xeb yog siab.
Cov ntaub ntawv no raug xaiv rau lub neej ntev.

3. Cov Kev Ntsuas Siab Tseem Ceeb hauv Cov Txheej Txheem Tiv Thaiv Hluav Taws

3.1 Qhov Siab ntawm Kev Tsuag Tshuaj Theoretical Hauv Qab Siab

Hauv feem ntau cov haujlwm tua hluav taws, PN16 yog qhov ntsuas siab ua ntej.

Raws li tus qauv Suav teb GB 50974 - Code for Design of Fire Water Supply and Hydrant Systems, lub siab ua haujlwm ntawm cov tshuab tua hluav taws sab hauv tsev feem ntau yog nruab nrab ntawm 1.0 MPa thiab 1.6 MPa.

Rau cov tsev siab lossis cov chaw loj, qhov siab yuav siab dua.
Txawm li cas los xij, PN16 twb npog feem ntau cov tsev ib txwm muaj lawm.

Muaj ntau tus neeg nug tias dej siab npaum li cas thiaj li txau tau rau hauv qab qhov siab no.
Piv txwv li, siv lub qhov dej tua hluav taws, nyob rau hauv PN16 lub siab, dej tuaj yeem ncav cuag li 163 meters ntsug.

Tus nqi no yog xam los ntawm kev siv cov mis:

h = P / (ρ × g)

Qhov twg:
P = 1.6 × 10⁶ Pa
ρ (dej ceev) ≈ 1000 kg/m³
g ≈ 9.81 m/s²

Cov txiaj ntsig tau xam:
siab ≈ 163 m

Hauv cov xwm txheej tiag tiag, kev tiv thaiv ntawm lub nozzle, kev sib txhuam ntawm huab cua, thiab kev poob ntawm cov yeeb nkab txo qhov siab.
Qhov siab tiag tiag ntawm cov tshuaj tsuag feem ntau yog 140-150 meters.
Qhov no txaus rau feem ntau cov tsev, xws li cov tsev siab thiab cov khw loj.

3.2 Qhov Siab Tseeb ntawm Kev Tsuag hauv Kev Xyaum Ua Haujlwm Engineering

Hauv cov tshuab hluav taws, kev siab tsis yog kev xav.
Nws muaj feem cuam tshuam ncaj qha rau qhov siab ntawm lub tsev.

Tom qab xav txog kev poob ntawm cov yeeb nkab, cov kev nyab xeeb, thiab kev hloov pauv ntawm lub siab uas tshwm sim los ntawm kev pib thiab nres ntawm lub twj tso kua mis, cov nqi hauv qab no feem ntau raug lees txais:

Vim li no, PN16 dhau los ua qhov kev xaiv zoo tshaj plaws thiab pheej yig tshaj plaws.

3.3 Cov Kev Ntsuas Siab Feem Ntau Hauv Cov Haujlwm Hluav Taws

Cov tshuab tua hluav taws hauv tsev → PN16
Cov tshuab txau dej tsis siv neeg → PN16
Cov kav hluav taws sab nraum zoov → PN16 lossis siab dua
Cov kav dej tso tawm ntawm lub twj tso kua hluav taws → PN20 / PN25 hauv qee qhov project

Yog tias qhov ntsuas siab qis dua PN16,
lub kaw lus yuav tsis muaj kev nyab xeeb txaus thaum muaj xwm txheej ceev.