Rear Cylinder Seal
The rear cylinder of a turbine is a unique environment: large diameter, high vibration, and near the exhaust hood. Ordinary seals often fail here. Our Rear Cylinder Seal features a segmented assembly design with a radial gap of 0.8 – 2.5 mm, allowing it to accommodate rotor deflection and vibration while maintaining effective sealing.
- Product Introduction
Technical Parameters
|
Parameter |
Value |
|
Product Name |
Rear Cylinder Seal |
|
Applicable Medium |
Low-pressure steam, air |
|
Operating Temperature |
-30°C – 350°C |
|
Operating Pressure |
≤ 1.5 MPa |
|
Tooth Type Options |
Labyrinth, side tooth, honeycomb composite |
|
Tooth Height |
1.5 – 4 mm |
|
Radial Design Gap |
0.8 – 2.5 mm |
|
Ring Segment Quantity |
6 – 16 pieces |
|
Number of Seal Stages |
2 – 6 stages |
|
Leakage Control Effect |
40% – 70% lower than simple baffle seal |
|
Service Life |
4 – 8 years continuous operation |
Why Choose Our Rear Cylinder Seal?
1. Specially Designed for the Rear Cylinder
The rear cylinder of a turbine is a unique environment: large diameter, high vibration, and near the exhaust hood. Ordinary seals often fail here. Our Rear Cylinder Seal features a segmented assembly design with a radial gap of 0.8 – 2.5 mm, allowing it to accommodate rotor deflection and vibration while maintaining effective sealing.
2. Dual Function: Keep Air Out, Steam In
This seal performs two critical tasks:
- Prevent outside air from entering the exhaust hood, maintaining vacuum stability.
- Stop steam from leaking out, reducing energy loss.
Multiple throttling stages control leakage effectively, while low tooth height prevents rubbing. The seal operates reliably in temperatures from -30°C to 350°C and pressures up to 1.5 MPa.
3. Custom Fit and Honeycomb Option
Every seal can be customized for specific turbine units. For improved performance, we offer a honeycomb composite structure, which enhances damping and leakage control. Our factory provides on-site measurement, ensuring high segment fit and assembly precision. Materials resist corrosion in wet steam conditions, making the seal durable and long-lasting.
FAQ
Q: Can it work with old units?
A: Yes. It can directly replace original seals. Service life is 4 – 8 years, and leakage control is 40% – 70% better than simple baffle seals.
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