A gas turbine seal

Abstract

The utility model provides a kind of gas turbine sealing element, the gas turbine includes first cylinder part, second cylinder part and multiple bolts, the first cylinder part and the second cylinder part are connected by multiple the bolt, the gas turbine further includes first sealing element, the first sealing element is located the connecting surface of the first cylinder part and the second cylinder part, under the action of multiple bolts the first cylinder part and the second cylinder part extrude the first sealing element, at least part the bolt penetrates the first sealing element.In the utility model, bolt can penetrate first sealing element, save radial space, solve the technical problem that the interference between bolt is prone to occur due to small space.

Claims

1. A gas turbine seal, the gas turbine comprising a first cylinder section (1), a second cylinder section (2), and a plurality of bolts (101), the first cylinder section (1) and the second cylinder section (2) being connected by the plurality of bolts (101), characterized in that, The gas turbine also includes a first seal (3), which is located at the connection surface of the first cylinder section (1) and the second cylinder section (2). Under the action of multiple bolts (101), the first cylinder section (1) and the second cylinder section (2) squeeze the first seal (3), and at least part of the bolts (101) penetrate the first seal (3).

2. The gas turbine seal according to claim 1, characterized in that, On the connecting surface of the first cylinder part (1) and the second cylinder part (2), the effective wall thickness of the area in contact between the first cylinder part (1) and the first seal (3) and / or the effective wall thickness of the area in contact between the second cylinder part (2) and the first seal (3) is 1.5 to 2.5 times the diameter of the bolt (101).

3. The gas turbine seal according to claim 2, characterized in that, The first seal (3) includes a plurality of through holes (31), through which the bolt (101) passes through the first seal (3).

4. The gas turbine seal according to claim 3, characterized in that, The first seal (3) also includes a plurality of ring portions (32) and a neck (33), the through hole (31) being located in the ring portion (32), and the two ring portions (32) being connected by the neck (33).

5. The gas turbine seal according to claim 4, characterized in that, It also includes a second seal (4) connected to the first seal (3), and the bolt (101) is located radially outside the second seal (4).

6. The gas turbine seal according to claim 5, characterized in that, The first seal (3) further includes a connecting groove (34), and the second seal (4) includes a connecting boss (41). The connecting groove (34) is located at one end of the first seal (3), and the connecting boss (41) is located at one end of the second seal (4). The first seal (3) and the second seal (4) are connected through the connecting groove (34) and the connecting boss (41).

7. The gas turbine seal according to claim 6, characterized in that, The width of the end face of the connecting boss (41) is greater than the width of the opening of the connecting groove (34), and the connecting boss (41) can be locked in the connecting groove (34).

8. The gas turbine seal according to claim 7, characterized in that, Both the first seal (3) and the second seal (4) tend to extend along the axial direction of the gas turbine.

9. The gas turbine seal according to claim 8, characterized in that, Both the first seal (3) and the second seal (4) are made of non-metallic elastic materials.

10. The gas turbine seal according to claim 9, characterized in that, The second cylinder section (2) further includes a first sealing groove (21) and a second sealing groove (22). The first sealing groove (21) and the second sealing groove (22) are both located on the end face of the second cylinder section (2). The end face of the second cylinder section (2) is the connection surface between the first cylinder section (1) and the second cylinder section (2). The first seal (3) is located in the first sealing groove (21), and the second seal (4) is located in the second sealing groove (22).

11. The gas turbine seal according to claim 10, characterized in that, The first sealing groove (21) and the second sealing groove (22) are connected, and both the first sealing groove (21) and the second sealing groove (22) tend to extend along the axial direction of the gas turbine.

12. The gas turbine seal according to claim 11, characterized in that, The second cylinder section (2) also includes a plurality of bolt holes (23), some of which are located on the bottom surface of the first sealing groove (21) and some of which are located on the radial outer side of the second sealing groove (22).

13. The gas turbine seal according to any one of claims 1-12, characterized in that, The first cylinder section (1) is a bearing housing cover, the second cylinder section (2) is the lower half inner ring of the intake cylinder, and the connecting surface between the first cylinder section (1) and the second cylinder section (2) is the mid-section of the intake cylinder.

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