Vane seal system and seal therefor
A vane seal system includes a first non-rotatable vane segment that has a first airfoil with a first pocket at one end thereof. A second non-rotatable vane segment includes a second airfoil with a second pocket at one end thereof spaced by a gap from the first pocket. A seal member spans across the gap and extends in the first pocket and the second pocket. The seal member includes a seal element and at least one spring portion configured to positively locate the seal member in a sealing direction. Also disclosed is a seal for a vane seal system and a method related thereto for damping relative movement between a first pocket and a second pocket.
1. A vane seal system comprising:
a first non-rotatable vane segment including a first airfoil having at one end thereof a first pocket;
a second non-rotatable vane segment including a second airfoil having at one end thereof a second pocket spaced by a gap from the first pocket; and
a seal member spanning across the gap and extending in the first pocket and the second pocket, the seal member including a seal element and at least one spring portion configured to positively locate the seal member in a sealing direction.
2. The vane seal system as recited in claim 1 , wherein the at least one spring portion is in frictional contact with sides of the first pocket and the second pocket such that the at least one spring portion damps relative movement between the first pocket and the second pocket.
3. The vane seal system as recited in claim 1 , wherein the seal element is configured to seal against a mating rotatable seal element and the at least one spring portion is configured to positively locate the seal element toward the mating rotatable seal element.
4. The vane seal system as recited in claim 1 , wherein the at least one spring portion is rigidly affixed with the seal element.
5. The vane seal system as recited in claim 1 , wherein the at least one spring portion includes a first spring portion configured to bias the seal member in a first direction and a second seal portion configured to bias the seal member in a second, different direction.
6. The vane seal system as recited in claim 5 , wherein the first direction and the second direction are orthogonal.
7. The vane seal system as recited in claim 1 , wherein the at least one spring portion includes a spring leg.
8. The vane seal system as recited in claim 1 , wherein the seal member includes a base wall having a first side and a second, opposed side, with a spring leg at one end of the base wall that extends from the first side, and the seal element is bonded to the first side.
9. The vane seal system as recited in claim 1 , wherein the seal member includes a base wall with a first spring leg at one end thereof and a second spring leg at an opposed end thereof.
10. The vane seal system as recited in claim 9 , wherein the first spring leg and the second spring leg bias the seal member in different directions.
11. The vane seal system as recited in claim 1 , wherein the seal element includes a porous structure.
12. The vane seal system as recited in claim 1 , wherein the seal member includes a uniform thickness base wall and the seal element extends from one side thereof.
13. The vane seal system as recited in claim 1 , wherein the first pocket and the second pocket open laterally to each other and have respective open sides opening in a direction away from the respective first airfoil and second airfoil.