Masking systems for a turbine

Patent metadata

Field	Value
Publication number	US-11300005-B2
Application number	US-201917429362-A
Country	US
Kind code	B2
Filing date	Feb 15, 2019
Priority date	Feb 15, 2019
Publication date	Apr 12, 2022
Grant date	Apr 12, 2022

Abstract

A masking system for a turbine including a first quantity of blades attached to a rotor and arranged adjacent one another to define a blade row with each blade including a blade root, includes a second quantity of center plates. Each center plate is disposed between two adjacent blades and includes a resilient member in contact with each of the two adjacent blades, and a first attachment member operable to attach the center plate to the rotor. The system includes a third quantity of side covers, each side cover positioned adjacent the blade root of one of the blades and connected to one of the center plates, each side cover including a resilient member positioned to surround a portion of the adjacent blade root, and a second attachment member operable to attach the side cover to the rotor.

First claim

What is claimed is:

1. A masking system for a turbine including a first quantity of blades attached to a rotor and arranged adjacent one another to define a blade row, each blade including a blade root, the masking system comprising:
a second quantity of center plates, each center plate disposed between two adjacent blades and including a resilient member in contact with each of the two adjacent blades, and a first attachment member operable to attach the center plate to the rotor; and
a third quantity of side covers, each side cover positioned adjacent the blade root of one of the blades and connected to one of the center plates, each side cover including a second resilient member positioned to surround a portion of the adjacent blade root, and a second attachment member operable to attach the side cover to the rotor.

2. The masking system of claim 1 , wherein the first quantity and the second quantity are equal, and the third quantity is two times the first quantity.

3. The masking system of claim 1 , wherein the resilient member includes a silicon foam material.

4. The masking system of claim 1 , wherein the resilient member includes a first edge curved to match the shape of a first of the adjacent blades and a second edge curved to match the shape of a second of the adjacent blades, and wherein the resilient member is larger than a space between the first blade and the second blade such that the first edge and the second edge simultaneously contact both of the first blade and the second blade.

5. The masking system of claim 4 , wherein the center plate further comprises a base member sized to fit between the blades and contact the rotor.

6. The masking system of claim 5 , wherein the center plate further comprises a support member sized to fit between the blades and fixedly connected to the base member.

7. The masking system of claim 6 , wherein the resilient member is sandwiched between the base member and the support member.

8. The masking system of claim 5 , wherein the first attachment member includes four separate magnets and wherein the base member defines corresponding pockets each sized to receive one of the magnets.

9. The masking system of claim 1 , wherein the first attachment member and the second attachment member each include a magnet.

10. The masking system of claim 1 , wherein each center plate includes one of a tongue or a groove and each side cover includes the other of the tongue and groove so that each side cover interlocks with one of the center plates.

11. A masking system for a turbine including a first quantity of blades attached to a rotor and arranged adjacent one another to define a blade row, each blade including a blade root, the masking system comprising:
a second quantity of center plates, each center plate disposed between two adjacent blades, each center plate comprising:
a base member sized to fit between the blades and contact the rotor;
a first attachment member supported by the base member and positioned to selectively connect the base member to the rotor;
a resilient member coupled to the base member to retain the first attachment member within the base member, the resilient member sized to contact both of the adjacent blades; and
a support member sized to fit between the blades and fixedly connected to the base member.

12. The masking system of claim 11 , wherein the resilient member includes a silicon foam material.

13. The masking system of claim 11 , wherein the resilient member includes a first edge curved to match the shape of a first of the adjacent blades and a second edge curved to match the shape of a second of the adjacent blades, and wherein the resilient member is larger than a space between the first blade and the second blade such that the first edge and the second edge simultaneously contact both of the first blade and the second blade.

14. The masking system of claim 11 , wherein the resilient member is sandwiched between the base member and the support member.

15. The masking system of claim 11 , wherein the first attachment member includes three separate magnets and wherein the base member defines three pockets each sized to receive one of the magnets.

16. The masking system of claim 11 , further comprising a third quantity of side covers, each side cover positioned adjacent the blade root of one of the blades and connected to one of the center plates, each side cover including a second resilient member positioned to surround a portion of the adjacent blade root, and a second attachment member operable to attach the side cover to the rotor and to compress the second resilient member.

17. The masking system of claim 11 , wherein the first quantity and the second quantity are equal, and the third quantity is two times the first quantity.

18. The masking system of claim 16 , wherein each center plate includes one of a tongue or a groove and each side cover includes the other of the tongue and groove so that each side cover interlocks with one of the center plates.

19. A masking system for a turbine including a first quantity of blades attached to a rotor and arranged adjacent one another to define a blade row, each blade including a blade root, the masking system comprising:
a second quantity of center plates, each disposed between two adjacent blades;
a third quantity of side covers, each side cover positioned adjacent the blade root of one of the blades, each side cover including:
a plate member sized to cover the blade root and a portion of the rotor such that the plate members cooperate to completely cover an annular area that includes each blade root and a rotor surface between the blade roots;
a resilient member positioned between the rotor and the plate member and sized to surround a perimeter of the blade root; and
a first attachment member coupled to the plate member and operable to attach the plate member to the rotor and to compress the resilient member between the plate member and the rotor.

20. The masking system of claim 19 , wherein the first attachment member includes a magnet.

21. The masking system of claim 19 , wherein the resilient member is an O-ring.

22. The masking system of claim 19 , wherein each center plate includes a second resilient member in contact with each of the two adjacent blades, and a second attachment member operable to attach the center plate to the rotor.

23. The masking system of claim 19 , wherein each center plate includes one of a tongue or a groove and each side cover includes the other of the tongue and groove so that each side cover interlocks with one of the center plates.

24. The masking system of claim 23 , wherein the tongue and grooved are sized to position the center plate over the blade root.

Assignees

• Siemens Energy Inc

Inventors

• Vindler Michael R
• Hall Michael A

Classifications

• F05D2230/72

  Maintenance · CPC title

• F01D25/002 Primary

  Cleaning of turbomachines · CPC title

• F05D2220/31

  in steam turbines · CPC title

• B24C1/04

  for treating only selected parts of a surface, e.g. for carving stone or glass · CPC title

• B24C3/32

  designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks (B24C3/08, B24C3/18 take precedence) · CPC title