Brush seal for a turbomachine
A brush seal for a turbomachine includes a support that has a recess, in which a spring element is clamped axially, which fastens a brush element, where the spring element is axially locked at an undercut in the recess.
1. A brush seal for a turbomachine, comprising:
a carrier that has a recess in which a spring element is axially braced that immobilizes a brush element, the spring element being axially latched against an undercut in the recess,
wherein the spring element comprises
a first leg having a first end and a second end,
a second leg having a first end and a second end, wherein the first end of the second leg is interconnected with said second end of said first leg,
a third leg having a first end and a second end, wherein the first end of the third leg is interconnected with said second end of said second leg, and
a fourth leg having a first end and a second end, wherein the first end of the fourth leg is interconnected with said second end of said third leg;
the brush element being clamped between the first and second legs, wherein the fourth leg braces against the undercut.
2. The brush seal according to claim 1 , wherein the spring element is radially immobilized in the recess by frictional engagement or positive-locking.
3. The brush seal according to claim 1 , wherein the recess has an insertion opening for insertion of the subsequently radially expanding spring element.
4. The brush seal according to claim 3 , wherein the first leg braces axially against a shoulder of the recess.
5. The brush seal according to claim 4 , wherein the spring element braces radially against a transition area between the first and second legs and/or against a transition area between the third and fourth legs in the recess.
6. The brush seal according to claim 3 , wherein the spring element braces radially against a transition area between the first and second legs and/or against a transition area between the third and fourth legs in the recess.
7. The brush seal according to claim 1 , wherein the brush element and/or spring element is configured in one part or in several parts.
8. The brush seal according to claim 1 , wherein the spring element is made of metal and is electroplated.
9. The brush seal according to claim 1 , wherein the carrier is made of a titanium-aluminum alloy.
10. The brush seal according to claim 1 , wherein the brush element contacts a rotor of a turbomachine.
11. The brush seal according to claim 10 , wherein the turbomachine is a gas turbine.
12. The brush seal according to claim 1 , wherein the spring element is inserted into the recess and latched against the undercut.