Penetration seal metal expansion joints
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Penetration seal (with telescopic covers option)
area cross section.
| Item | Description |
|---|---|
| 1 | Bellows |
| 2 | Outside ring |
| 3 | Inside ring |
| 4 | Drain plug (optional) |
| 5 | Cover ring (optional) |
| 6 | Inside cover (optional) |
| 7 | Outside cover (optional) |
| 8 | Boiler wall* |
| 9 | Penetration pipe* |
Penetration seal metal expansion joints
Merkmale
- 100 % airtight solution to boiler penetration.
- Permits axial and lateral movement without causing high stresses in penetration pipe and boiler wall.
- Maintenance-free
- Used in heat recovery steam generators (HRSGs).
Vorteile
- Improved boiler efficiency through zero gas seepage.
- Improved boiler efficiency through reduced heat loss.
- No emissions
- Noise reduction
Einsatzbereich
Diameter: 75 mm (3”) ... 750 mm (30”) bellows inside diameter
Process temperature: Up to 650 °C (1,200 °F)
Pressure: Up to 1 bar (15 PSI)
Typical axial movement limit: ±200 mm (±8”)
Typical lateral movement limit: 200 mm (8”)
Typical angular movement: 0°
Movements are non-concurrent.
Werkstoffe
- Bellows material options: 1.4301(ANSI 304), 1.4404 (ANSI 316/L dual-certified), 1.4541 (ANSI 321), Inconel® 600, Inconel® 625, 254 SMO®, Incoloy® 25-6HN.
- Bellows basics: formed by punch mandrel, thin-wall ply thickness ≤1.5 mm (0.060”).
- Rings, bands: carbon steel, chrome-moly.
- Metal covers: carbon steel, stainless steel.
Standards und Freigaben
- GE Specification
- Expansion Joint Manufacturers Association (EJMA)
- ISO 9001:2008
Empfohlene Anwendungen
- Power plant technology
- Refining technology
- HRSGs (heat recovery steam generators)
Funktionsbeschreibung
Metal expansion joints are used in pipelines to compensate for thermal growth, typically in applications with high internal temperatures; or to prevent vibrations from being transmitted beyond the expansion joint.
Hinweis
Standard quality control and testing:
- Air and soap bubble leak check.
Service:
- Skilled field service teams can provide site support.
- Expert clamshell (split bellows, for in situ repair) bellows welders.
- Experienced supervision by our field service personnel available.
