Bellow Type Seal
The Bellow Type Seal eliminates traditional packing. It uses a fully metal bellows structure, welded directly to dynamic and stationary seal rings. As the lance tube moves, the bellows compensates for axial movement of ±8–25 mm and radial runout of 0.2–0.6 mm. This design provides a maintenance-free, fully sealed solution.
- Product Introduction
Technical Parameters
|
Parameter |
Value |
|
Product Name |
Bellow Type Seal |
|
Applicable Equipment |
Long retractable soot blower, furnace soot blower, rotary soot blower |
|
Operating Temperature |
-20°C – 650°C |
|
Operating Pressure |
≤ 4.0 MPa |
|
Adaptable Lance Tube OD |
Φ25 – Φ110 mm |
|
Bellows Material |
Inconel series, 316L stainless steel, Hastelloy |
|
Axial Compensation Stroke |
±8 – ±25 mm |
|
Radial Adaptive Offset |
0.2 – 0.6 mm |
|
Static Seal Leakage Rate |
Near zero |
|
Design Service Life |
≥ 12,000 working hours |
Key Advantages
1. No Packing, No Maintenance
The Bellow Type Seal eliminates traditional packing. It uses a fully metal bellows structure, welded directly to dynamic and stationary seal rings. As the lance tube moves, the bellows compensates for axial movement of ±8–25 mm and radial runout of 0.2–0.6 mm. This design provides a maintenance-free, fully sealed solution.
2. Long-Life, Stable Performance
Unlike packing seals that require frequent adjustments, the Bellow Type Seal has a service life of ≥12,000 working hours. No packing means no powdering, outgassing, or smoke. The seal ensures a clean working environment, reduces resistance during lance tube movement, and gives operators peace of mind.
3. Precision Manufacturing for Reliability
The bellows are formed using precision hydraulic shaping and vacuum welding. This ensures even rebound and high fatigue strength. Materials include Inconel series, 316L stainless steel, or Hastelloy. Each seal is customized to fit the specific lance tube dimensions.
FAQ
- Pressure capacity: ≤ 4.0 MPa
- Temperature limit: up to 650°C
- Service life: ≥12,000 hours
The Bellow Type Seal is ideal for customers seeking zero-maintenance, high-temperature, and high-pressure soot blower sealing.
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