COMPLIANT FOIL SEALS (CFS)
Product Details
MiTi has manufactured its Compliant Foil Seals at sizes up to 8.25 inches in diameter.
Compliant Foil Seal Testing
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The CFS concept, as depicted schematically in Figure 1, is derived from MiTi's highly successful Compliant Foil Gas Bearing (CFB) design. The CFS, like the CFB, is comprised of a smooth,
compliant foil supported by a spring bump strip. The bump strips are designed and manufactured to provide spatially variable stiffness and damping support properties for the smooth, sealing
foil surface. It is this spatially variable stiffness support that permits non-contacting CFS operation, even in the presence of large rotor excursions.
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The performance of both the CFB and CFS is based on the hydrodynamically generated high pressure gas film built up as a very thin layer between the journal and the bearing or seal top surface (top foil) due to the shaft rotation. This thin gas film separates the seal surface from the rotating shaft sealing surface, resulting in non-contact, continuous operation. Strict accounting of all variables results in a seal with optimized performance attributes. While its primary purpose is the control of leakage, the similarity to a CFB results in its having a load bearing capacity as a secondary function. This capacity is predictable and can be incorporated in the overall bearing system design to provide additional support stiffness and damping for improved rotor system dynamics.
| FEATURES | BENEFITS |
| Small Operating Clearances |
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| Non-Contacting Operation |
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| Compliant Structure |
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How it works (CONCEPT)
Features and Benefits Offered by the CFS
- Country:Cocos (Keeling) Islands
- telephone:61-518-862-4290
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Small Operating Clearances Low Leakage High Differential Pressure |
