Kunzwisisa Bellow Seal Globe Mavhavha
ABellow seal globe valveivhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavharowanodhindwa kuti abvise tsinde leakage mumashandisirwo anokosha. Kusiyana neyakajairwa mavharuvhu eglobhu, inoshandisa simbi yemabhero musangano wakasungirirwa kune ese hunde nemuviri wevharuvhu, kugadzira chisimbiso che hermetic. Iyi dhizaini yakakosha pakubata zvine muchetura, corrosive, kana high-purity media uko kuburitswa kwehupoteri kusingatenderwe.
Zvikamu zvakakosha zveBellow Seal Globe Mavharuvhu
1. Bellows Assembly
- Material:Simbi isina tsvina (SS316/316L), Inconel 625, kana Hastelloy C276
- Dhizaini:Multi-ply convolutions (8-12 layers) ye10,000+ kutenderera kusimba
- Basa:Inomanikidza / inotambanudza panguva yekushanda kwevhavha uchichengetedza kuvimbika kwechisimbiso
2. Muviri wevhavha
- Pressure Rating:Kirasi 150 kusvika Kirasi 2500 (ANSI/ASME B16.34)
- Pedzisa Kubatana:Flanged (RF/RTJ), socket weld, kana buttweld
- Temp Range:-196°C kusvika 550°C (cryogenic kusvika kumusoro-kupisa)
3. Dzinde & Disc
- Integral forged stem-disc assembly yekurongeka
- Kuomarara kwepamusoro (Stellite 6 coating) yeabrasion kuramba
4. Chisimbiso chechipiri (Backup)
- Graphite kurongedza zvindori pazasi mabhero sekutadza-kuchengetedza
Iyo Bellow Seal Globe Valve Inoshanda Sei
Danho 1: Kuvhura Valve
Kana vhiri reruoko richitenderedzwa neruchidzira:
- Dzinde rinosimuka, richisimudza disc kubva pachigaro
- Bellows compress axially, kuchengetedza chisimbiso kutendeseka
Danho 2: Kuvhara Valve
Kutenderera kwewachi:
- Dzinde rinomanikidza dhisiki rinopesana nechigaro, kumisa kuyerera
- Mabhero anosvika pakureba kwepakutanga
Danho rechitatu: Leakage Prevention
Kuisa chisimbiso kaviri:
- Chisimbiso chekutanga: Bellows block stem leakage nzira
- Sekondari chisimbiso: Graphite kurongedza (API 622 inoenderana)
Zvakanakira Pamusoro peStandard Globe Mavharuvhu
| Feature | Bellow Seal Globe Valve | Yakazara Globe Valve |
|---|---|---|
| Stem Leakage | Zero fugitive emissions (ISO 15848-1 TA-Luft) | Kusvikira ku500 ppm kuvuza |
| Maintenance | Hapana kurongedza kunodiwa | Kugadzirisa kurongedza kwegore negore |
| Applications | Njodzi, yakakwirira-kuchena, vacuum systems | General mvura/steam services |
Industrial Applications
1. Chemical Processing
- Chlor-alkali zvirimwa (chlorine gasi midziyo)
- Pharmaceutical API kugadzirwa
2. Mafuta & Gasi
- HF alkylation zvikamu
- LNG cryogenic transfer (-162°C)
3. Power Generation
- Boiler feedwater kuparadzaniswa
- Steam turbine bypass masisitimu
Sarudzo Criteria
1. Bellows Type
- Forged Bellows:High-pressure (ASME Kirasi 1500+)
- Welded Bellows:Corrosive media (electropolished finish)
2. Flow Characteristics
- Equal percentage vs. linear flow for control applications
3. Zvitupa
- NACE MR0175 yebasa rinovava
- PED 2014/68/EU yemisika yeEurope
Pamusoro China Bellow Vagadziri Vagadziri
Vagadziri veChinese vakaita seNSW Valve Manufacturer inopa:
- API 602/BS 1873 inoenderana magadzirirwo
- 30% mari yekuchengetedza maringe nemhando dzeEuropean
- Tsika mabhero kuyedzwa (helium leak yekuona)
Maintenance Best Practices
- Kuongororwa kwegore negore kwekuneta kwakatsemuka
- Stem lubrication nepamusoro-tembiricha girisi
- Dzivisa kunyanya-torquing (max 50 Nm yeDN50 mavharuvhu)
Nguva yekutumira: Kubvumbi-10-2025