Filled abradable seal component and associated methods thereof

Patent metadata

Field	Value
Publication number	US-10774670-B2
Application number	US-201815974821-A
Country	US
Kind code	B2
Filing date	May 9, 2018
Priority date	Jun 7, 2017
Publication date	Sep 15, 2020
Grant date	Sep 15, 2020

Abstract

A filled abradable seal component, an associated method of manufacturing, and a turbomachine including the filled abradable seal component are disclosed. The method includes positioning the abradable seal component including a plurality of honeycomb cells, applying a filler material on the abradable seal component to fill the plurality of honeycomb cells, and curing the filler material at a temperature below 250 degrees Celsius to produce the filled abradable seal component. The filler material includes an abradable material, a binder material, and a fluid catalyst. The abradable material includes at least one of nickel chromium aluminum-bentonite, cobalt nickel chromium aluminum yttrium-polyester, cobalt nickel chromium aluminum yttrium-boron nitride, aluminum silicon-bentonite, aluminum bronze-polyester, nickel graphite, or aluminum silicon-boron nitride. The binder material includes at least one of aluminum, nickel-aluminum, aluminum thiophosphate, or aluminum thiosulfate. The fluid catalyst includes a solvent having hydroxyl groups.

First claim

What we claim is:

1. A method of manufacturing a filled abradable seal component for a turbomachine, comprising:
positioning an abradable seal component comprising a plurality of honeycomb cells;
applying a filler material on the abradable seal component to fill the plurality of honeycomb cells, wherein the filler material comprises an abradable material, a binder material, and a fluid catalyst,
wherein:
the abradable material comprises at least one of nickel chromium aluminum-bentonite, cobalt nickel chromium aluminum yttrium-polyester, cobalt nickel chromium aluminum yttrium-boron nitride, aluminum silicon-bentonite, aluminum bronze-polyester, nickel graphite, or aluminum silicon-boron nitride;

the binder material comprises at least one of aluminum, nickel-aluminum, aluminum thiophosphate, or aluminum thiosulfate; and
the fluid catalyst comprises a solvent comprising hydroxyl groups; and

reacting and curing the filler material within the plurality of honeycomb cells at a temperature below 250 degrees Celsius to form a reacted mixture from the filler material and produce the filled abradable seal component.

2. The method of claim 1 , wherein reacting and curing the filler material within the plurality of honeycomb cells is performed at a temperature ranging from 20 degrees Celsius to 30 degrees Celsius.

3. The method of claim 1 , wherein applying the filler material comprises:
mixing the abradable material and the binder material to produce a mixture;
filling the mixture in the plurality of honeycomb cells; and
providing the fluid catalyst to the mixture filled in the plurality of honeycomb cells.

4. The method of claim 1 , wherein applying the filler material comprises:
mixing the abradable material and the binder material to produce a mixture;
mixing the fluid catalyst with the mixture to produce a slurry; and
filling the slurry in the plurality of honeycomb cells.

5. The method of claim 1 , wherein reacting and curing the filler material within the plurality of honeycomb cells is performed below a melting point of the filler material.

6. A filled abradable seal component for a turbomachine, comprising:
an abradable seal component comprising a plurality of honeycomb cells filled with a reacted mixture bonded to one or more side walls of the plurality of honeycomb cells,
wherein the reacted mixture is formed from a filler material comprising an abradable material, a binder material, and a fluid catalyst being reacted and cured within the plurality of honeycomb cells at a temperature below 250 degrees Celsius, and
wherein:
the abradable material comprises at least one of nickel chromium aluminum-bentonite, cobalt nickel chromium aluminum yttrium-polyester, cobalt nickel chromium aluminum yttrium-boron nitride, aluminum silicon-bentonite, aluminum bronze-polyester, nickel graphite, or aluminum silicon-boron nitride;
the binder material comprises at least one of aluminum, nickel-aluminum, aluminum thiophosphate, or aluminum thiosulfate; and
the fluid catalyst comprises a solvent comprising hydroxyl groups.

7. The filled abradable seal component of claim 6 , further comprising a plurality of grooves disposed on the filled abradable seal component, wherein individual grooves of the plurality of grooves are spaced apart from each other along an axial direction of the turbomachine and extending along a circumferential direction of the turbomachine.

8. The filled abradable seal component of claim 7 , wherein the plurality of grooves comprises at least one of a rectangular groove, a triangular groove, a triangular-rectangular groove, or a convex-rectangular groove.

9. The filled abradable seal component of claim 6 , wherein the binder material is selected from the group consisting of aluminum, nickel-aluminum, aluminum thiophosphate, aluminum thiosulfate, and combinations thereof.

10. The filled abradable seal component of claim 6 , wherein a volume ratio of the abradable material to the binder material in the filler material is in a range from 0.5 to 3.

11. The filled abradable seal component of claim 10 , wherein the volume ratio of the abradable material to the binder material in the filler material is 1.

12. The filled abradable seal component of claim 6 , wherein the solvent is selected from the group consisting of an alcohol, an aqueous hydroxide, and combination thereof.

13. The filled abradable seal component of claim 6 , wherein the abradable material comprises nickel chromium aluminum-bentonite, the binder material comprises aluminum, and the fluid catalyst comprises water.

14. A turbomachine comprising:
a stationary component;
a rotatable component; and
a filled abradable seal component coupled to either one of the stationary component or the rotatable component of the turbomachine and facing teeth of other of the stationary component or the rotatable component to define a clearance therebetween,
wherein the filled abradable seal component comprises:
an abradable seal component comprising a plurality of honeycomb cells filled with a reacted mixture bonded to one or more side walls of the plurality of honeycomb cells,
wherein the reacted mixture is formed from a filler material comprising an abradable material, a binder material, and a fluid catalyst being reacted and cured within the plurality of honeycomb cells at a temperature below 250 degrees Celsius, and
wherein:
the abradable material comprises at least one of nickel chromium aluminum-bentonite, cobalt nickel chromium aluminum yttrium-polyester, cobalt nickel chromium aluminum yttrium-boron nitride, aluminum silicon-bentonite, aluminum bronze-polyester, nickel graphite, or aluminum silicon-boron nitride;
the binder material comprises at least one of aluminum, nickel-aluminum, aluminum thiophosphate, or aluminum thiosulfate; and
the fluid catalyst comprises a solvent comprising hydroxyl groups.

15. The turbomachine of claim 14 , further comprising a plurality of grooves disposed on the filled abradable seal component, wherein individual grooves of the plurality of grooves are spaced apart from each other along an axial direction of the turbomachine and extending along a circumferential direction of the turbomachine.

16. The turbomachine of claim 14 , wherein the stationary component is a compressor discharge casing of the turbomachine, wherein the rotatable component is a mid-shaft of the turbomachine, and wherein the clearance is between the compressor discharge casing and the mid-shaft.

17. The turbomachine of claim 14 , wherein the stationary component is a turbine casing of the turbomachine, wherein the rotatable component is a rotor blade of the turbomachine, and wherein the clearance is between the turbine casing and a tip of the rotor blade.

18. The turbomachine of claim 14 , wherein the stationary component is a stator blade of the turbomachine, wherein the rotatable component is a spacer wheel of the turbomachine, and wherein the clearance is between a tip of the stator blade and the spacer wheel.

19. The turbomachine of claim 14 , wherein the stationary component is a bearing housing of the turbomachine, wherein the rotatable component is an aft-shaft of the turbomachine, wherein the clearance is defined between the bearing housing and the aft-shaft.

20. The turbomachine of claim 14 , wherein the binder material is selected from the group consisting of aluminum, nickel-aluminum, aluminum thiophosphate, aluminum thiosulfate, and combinations thereof.

Assignees

• Gen Electric

Inventors

• Mathew Paul
• Nayak Mohandas
• Saha Krishnendu
• Prabhudharwadkar Deoras

Classifications

• B22F1/10

  Metallic powder containing lubricating or binding agents; Metallic powder containing organic material · CPC title

• F05D2300/228

  Nitrides · CPC title

• F05D2230/40

  Heat treatment · CPC title

• F05D2300/224

  Carbon, e.g. graphite · CPC title

• F01D11/127

  with a deformable or crushable structure, e.g. honeycomb · CPC title