Control system and method for determining contaminant loading of turbine blades

Patent metadata

Field	Value
Publication number	US-11098724-B2
Application number	US-201715603082-A
Country	US
Kind code	B2
Filing date	May 23, 2017
Priority date	May 23, 2017
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

A control system and method utilizing one or more processors that are configured to determine contaminant loading of blades of a turbomachinery compressor based on one or more environmental conditions to which the turbomachinery compressor is exposed and one or more atmospheric air inlet conditions of the turbomachinery compressor. The one or more processors then determine a corrosion contaminant concentration on the blades of the turbomachinery compressor based on the contaminant loading that is determined and determine an upper limit on or a distribution of potential corrosion of the blades of the turbomachinery based on the corrosion contaminant concentration, at least one of the environmental conditions to which the turbomachinery compressor is exposed, and the corrosion contaminant concentration that is determined.

First claim

What is claimed is:

1. A method comprising:
determining, using one or more processors, contaminant loading of blades of a turbomachinery compressor based on one or more environmental conditions to which the turbomachinery compressor is exposed and one or more atmospheric air inlet conditions of the turbomachinery compressor;
determining, using the one or more processors, a corrosion contaminant concentration on the blades of the turbomachinery compressor based on the contaminant loading that is determined; and
determining, using the one or more processors, one or more of an upper limit on or a distribution of potential corrosion of the blades of the turbomachinery based on the corrosion contaminant concentration, at least one of the environmental conditions to which the turbomachinery compressor is exposed, and the corrosion contaminant concentration that is determined.

2. The method of claim 1 , further comprising one or more of creating or updating a digital twin of the turbomachinery compressor based on the one or more of the upper limit on or the distribution of the potential corrosion of the blades of the turbomachinery, wherein the digital twin is configured to be monitored for determining when to repair one or more of the blades of the turbomachinery compressor.

3. The method of claim 2 , wherein the potential corrosion of the blades of the turbomachinery is based on predicting corrosion risk due to pitting of the blades.

4. The method of claim 1 , further comprising determining the one or more environmental conditions to which the turbomachinery compressor is exposed using one or more sensors.

5. The method of claim 1 , wherein the one or more environmental conditions to which the turbomachinery compressor is exposed includes one or more of ambient temperature to which the turbomachinery compressor is exposed, relative humidity to which the turbomachinery compressor is exposed, a time period that the turbomachinery compressor is exposed to moisture, or a concentration of a salt to which the turbomachinery compressor is exposed.

6. The method of claim 1 , further comprising determining the one or more atmospheric air inlet conditions of the turbomachinery compressor using one or more sensors.

7. The method of claim 1 , wherein the one or more atmospheric air inlet conditions include one or more of a concentration of chloride salt, dust (organic and inorganic) in air that is received into the turbomachinery compressor, a stage of one or more of the blades of the turbomachinery compressor being examined, or an area of the one or more of the blades of the turbomachinery compressor being examined.

8. The method of claim 1 , further comprising determining one or more corrosion-prone time periods of the blades of the turbomachinery compressor based on the operational conditions of the turbomachinery compressor, wherein the one or more of the upper limit on or the distribution of the potential corrosion of the blades of the turbomachinery also is based on one or more of a duration or a frequency of the one or more corrosion-prone time periods.

9. The method of claim 8 , wherein determining the one or more corrosion-prone time periods includes identifying one or more time periods that are at least a designated temporal delay subsequent to cessation of operation of the turbomachinery compressor.

10. The method of claim 1 , wherein determining the contaminant loading of the blades of the turbomachinery compressor also is based on an effectiveness of one or more washes of the blades of the turbomachinery compressor.

11. The method of claim 1 , wherein the contaminant loading of the blades of the turbomachinery compressor also is based on a mass flow rate of air into the turbomachinery compressor and a mass of a salt.

12. The method of claim 1 , wherein the contaminant loading of the blades of the turbomachinery compressor also is based on a probability that a salt sticks to the blades of the turbomachinery compressor and a surface area of one or more of the blades of the turbomachinery compressor.

13. The method of claim 12 , wherein the probability that salt and dust sticks to the blades of the compressor is determined using one or more of computational fluid dynamics modelling and experimental testing.

14. The method of claim 1 , further comprising, responsive to one or more of the upper limit on the potential corrosion exceeding a designated threshold or the distribution of the potential corrosion exceeding a designated distribution, one or more of automatically stopping operation of the turbomachinery compressor or recommending maintenance or repair of one or more blades of the turbomachinery compressor.

15. A control system comprising:
one or more processors configured to determine contaminant loading of blades of a turbomachinery compressor based on one or more environmental and machine operating conditions to which the turbomachinery compressor is exposed and one or more atmospheric air inlet conditions of the turbomachinery compressor;
the one or more processors also configured to determine a corrosion contaminant concentration on the blades of the turbomachinery compressor based on the contaminant loading that is determined; and
the one or more processors also configured to determine one or more of an upper limit on or a distribution of potential corrosion of the blades of the turbomachinery based on the corrosion contaminant loading, at least one of the environmental, operating and atmospheric air inlet conditions to which the turbomachinery compressor is exposed, and the corrosion contaminant concentration that is determined.

16. The control system of claim 15 , wherein the one or more processors are also configured to create or update a digital twin of the turbomachinery compressor based on the one or more of the upper limit on or the distribution of the potential corrosion of the blades of the turbomachinery, wherein the digital twin is configured to be monitored for determining when to repair one or more of the blades of the turbomachinery compressor.

17. The control system of claim 15 , wherein the one or more processors are also configured to determine the one or more environmental conditions to which the turbomachinery compressor is exposed using one or more sensors.

18. The control system of claim 15 , wherein the one or more atmospheric air inlet conditions include one or more of a concentration of chloride salt, dust (organic and inorganic) in air that is received into the turbomachinery compressor, a temperature of the air that is received into the turbomachinery compressor, relative humidity of the air that is received into the turbomachinery compressor, a flow rate of the air that is received into the turbomachinery compressor, a stage of one or more of the blades of the turbomachinery compressor being examined, or an area of the one or more of the blades of the turbomachinery compressor being examined.

19. The control system of claim 15 , wherein the one or more processors are also configured to determine one or more corrosion-prone time periods of the blades of the turbomachinery compressor based on the operational conditions of the turbomachinery compressor, wherein the one or more of the upper limit on or the distribution of the potential corrosion of the blades of the turbomachinery also is based on one or more of a duration or a frequency of the one or more corrosion-prone time periods.

20. The control system of claim 15 , wherein the one or more processors are also configured to, responsive to one or more

Assignees

• Gen Electric

Inventors

• Sundararajan Guruprasad
• Pillai Prashanth
• R Muralikrishan
• Hefner Rebecca
• Foulkes Bradford
• Viswanathan Anbarasan
• Kelly Robert G

Classifications

• F04D27/001 Primary

  Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring · CPC title

• G01M15/14 Primary

  Testing gas-turbine engines or jet-propulsion engines · CPC title

• F05D2230/80

  Repairing, retrofitting or upgrading methods · CPC title

• G01N17/04

  Corrosion probes · CPC title

• G05B13/048

  using a predictor · CPC title