Dab tsi yog Bellow Seal Globe Valve: Phau Ntawv Qhia Qhov Kawg

Nkag siab Bellow Seal Globe Valves

Ahauv qab foob ntiaj teb valveyog ib qho tshwj xeeb kaw-off valve tsim los tshem tawm qia to hauv kev siv tseem ceeb. Tsis zoo li ib txwm ntim lub ntiaj teb li qub, nws siv lub tshuab nqus hlau sib dhos ua ke rau ob lub qia thiab lub cev lub cev, tsim kom muaj lub foob hermetic. Qhov kev tsim no yog qhov tseem ceeb rau kev tuav cov tshuaj lom, corrosive, los yog cov xov xwm uas muaj siab dawb paug uas tsis tuaj yeem lees txais.

Cov Cheebtsam tseem ceeb ntawm Bellow Seal Globe Valves

1. Bellows Assembly

• Khoom siv:Stainless hlau (SS316/316L), Inconel 625, los yog Hastelloy C276
• Tsim:Multi-ply convolutions (8-12 txheej) rau 10,000+ voj voog durability
• Muaj nuj nqi:Compresses / txuas ntxiv thaum lub sijhawm ua haujlwm valve thaum tswj kev sib khi

2. Lub cev lub cev

• Kev ntsuas siab:Chav Kawm 150 txog Chav Kawm 2500 (ANSI / ASME B16.34)
• Xaus kev sib txuas:Flanged (RF / RTJ), qhov (socket) weld, lossis buttweld
• Temp Range:-196 ° C txog 550 ° C (cryogenic rau high-kub)

3. Qeb & Disc

• Integral forged qia-disc sib dhos rau kev sib dhos
• Deg hardening (Stellite 6 txheej) rau kev puas tsuaj

4. Thib Ob Lub Foob (Thawj thaub qab)

• Graphite packing rings hauv qab bellows raws li tsis muaj kev nyab xeeb

Yuav Ua Li Cas Bellow Seal Globe Valve Ua Haujlwm

Kauj Ruam 1: Qhib lub Valve

Thaum lub handwheel tig counterclockwise:

• Lub qia nce, nqa lub disc los ntawm lub rooj zaum
• Bellows compress axially, tswj kev ruaj khov

Kauj ruam 2: Kaw lub Valve

Clockwise rotation:

• qia quab yuam disc tiv thaiv lub rooj, nres khiav
• Bellows txuas mus rau thawj qhov ntev

Kauj Ruam 3: Kev Tiv Thaiv Kev Tiv Thaiv

Ob chav sealing kev txiav txim:

• Primary foob: Bellows thaiv qia xau txoj kev
• Secondary foob: Graphite packing (API 622 raws)

Qhov zoo tshaj Standard Globe Valves

Cov ntawv thov kev lag luam

1. Kev ua tshuaj lom neeg

• Chlor-alkali nroj tsuag (chlorine gas containment)
• Pharmaceutical API ntau lawm

2. Roj & Roj

• HF alkylation units
• LNG cryogenic hloov pauv (-162 ° C)

3. Kev tsim hluav taws xob

• Boiler feedwater cais
• Chav turbine bypass systems

Txoj Cai Xaiv

1. Hom Bellows

• Forged Bellows:Kev kub siab (ASME Class 1500+)
• Welded Bellows:Corrosive media (electropolished tiav)

2. Cov yam ntxwv ntws

• Sib npaug feem pua ​​​​vs. linear flow rau tswj kev siv

3. Cov ntawv pov thawj

• NACE MR0175 rau kev pabcuam qaub
• PED 2014/68/EU rau European lag luam

Tuam Tshoj Bellow Valve Manufacturers

Suav tuam txhab xws li NSW Valve Chaw tsim tshuaj paus muaj:

• API 602 / BS 1873 raws li tus qauv tsim
• 30% kev txuag nqi vs. European hom
• Kev cai bellows kuaj (helium leak detection)

Txhim kho cov kev coj ua zoo tshaj plaws

• Txhua xyoo bellows tshuaj xyuas rau qaug zog tawg
• Stem lubrication nrog high-temperature roj
• Tsis txhob dhau torquing (max 50 Nm rau DN50 li qub)