Turbine seal assembly and turbine apparatus comprising the turbine seal assembly

Patent metadata

Field	Value
Publication number	US-9631510-B2
Application number	US-201314379636-A
Country	US
Kind code	B2
Filing date	Feb 13, 2013
Priority date	Feb 29, 2012
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

According to an aspect of an exemplary embodiment, there is provided a turbine seal assembly comprising: a seal installation groove formed inside a casing; at least one seal member that has at least one tip portion formed in a blade direction and is installed in the seal installation groove; at least one elastic member for elastically connecting the casing to the seal member, wherein an inlet for an inflow of compressed gas is formed in the seal installation groove, and wherein a first space which the compressed gas enters is formed in the seal member, and at least one flow pathway which connects the first space to a space between a blade and the seal member is formed in the seal member.

First claim

The invention claimed is:

1. A turbine seal assembly comprising:
a seal installation groove formed inside a casing;
at least one seal member which comprises at least one tip portion formed in a blade direction and is installed in the seal installation groove; and
at least one elastic member for elastically connecting the casing to the seal member,
wherein the seal member comprises an upper part, a lower part being apart from the upper part, a connection part connecting the upper part to the lower part, and a first space formed between the upper part and the lower part,
wherein the first space is open toward a rear direction of the casing and connected to an inlet formed in the seal installation groove to introduce a compressed gas into the first space toward a front direction of the casing, and
wherein at least one flow pathway, which connects the first space to a second space formed between a blade and the seal member, is formed in the seal member.

2. The turbine seal assembly of claim 1 , wherein the elastic member is a plate spring.

3. The turbine seal assembly of claim 1 , wherein a thermal expansivity of a material of the elastic member is different from a thermal expansivity of a material of the casing.

4. The turbine seal assembly of claim 1 , wherein the first space is closed toward the front direction of the blade.

5. The turbine seal assembly of claim 1 , wherein the inlet is connected to a compressed gas tube connected to a compressor.

6. A turbine apparatus comprising:
a casing in which a seal installation groove is formed;
a rotor which is installed inside the casing and comprises a plurality of blades;
at least one seal member which comprises at least one tip portion formed toward a blade direction and is installed in the seal installation groove; and
at least one elastic member for elastically connecting the casing to the seal member,
wherein the seal member comprises an upper part, a lower part being apart from the upper part, a connection part connecting the upper part to the lower part, and a first space formed between the upper part and the lower part,
wherein the first space is open toward a rear direction of the casing and connected to an inlet formed in the seal installation groove to introduce a compressed gas into the first space toward a front direction of the casing, and
wherein at least one flow pathway, which connects the first space to a second space formed between a blade and the seal member, is formed in the seal member.

7. The turbine apparatus of claim 6 , wherein the tip portion comprises a first tip portion and a second tip portion formed apart from the first tip portion.

8. The turbine apparatus of claim 6 , wherein a thermal expansivity of a material of the elastic member is different from a thermal expansivity of a material of the casing.

9. The turbine apparatus of claim 6 , wherein the first space is closed toward the front direction of the blade.

10. The turbine apparatus of claim 6 , wherein the inlet is connected to a compressed gas tube connected to a compressor.

Assignees

• Hanwha Techwin Co Ltd

Inventors

• Lim Chan-Sun

Classifications

• F02C3/20

  using a special fuel, oxidant, or dilution fluid to generate the combustion products · CPC title

• F01D11/10 Primary

  using sealing fluid, e.g. steam · CPC title

• F01D11/20

  Actively adjusting tip-clearance · CPC title

• F02C9/40

  specially adapted to the use of a special fuel or a plurality of fuels · CPC title

• F02C7/28 Primary

  Arrangement of seals · CPC title