In situ load sharing brush seals
AssigneeGeneral Electric Company
InventorsHamid Reza Sarshar, Norman Arnold Turnquist, Osman Saim Dinc
Life of this patent
Estimating the term…
Abstract
Multistage brush seals are made by initially specifying designs thereof for collectively sharing a differential pressure along an adjacent land subject to relative rotation with the seals. The seals are modified to share the loading without blowdown therefrom. The seals are further modified to ensure rotational stability with the land. The seals are built and tested under pressure to determine pressure blowdown thereof. And then, the seals are again modified to share the pressure loading under blowdown. In this way, the seals share the load in situ under the effects of blowdown.
Claims16
A method of making a multistage seal comprising:
- specifying initial first and second brush seals having common designs for collectively sealing a differential pressure along a land subject to relative rotation with said seals;
- modifying a common design feature of said seals to share loading from said differential pressure without blowdown therefrom;
- modifying said seals to ensure rotational stability with said land;
- determining pressure blowdown of said seals under pressure, and
- using information obtained from determining pressure blowdown of said seals under pressure for modifying said common design feature of said seals to substantially equally share said pressure loading under said blowdown.
A method of making a multistage seal comprising:
- specifying initial first and second brush seals for collectively sealing a differential pressure along a land subject to relative rotation with said seals;
- modifying said seals to share loading from said differential pressure without blowdown therefrom;
- modifying said seals to ensure rotational stability with said land;
- determining pressure blowdown of said seals under pressure;
- and
- using information obtained from determining pressure blowdown of said seals under pressure for modifying said seals to share said pressure loading under said blowdown.
Dependencies are inferred from the claim text.