Combustion arrester quantification systems and methods

Patent metadata

Field	Value
Publication number	US-10286241-B2
Application number	US-201715472039-A
Country	US
Kind code	B2
Filing date	Mar 28, 2017
Priority date	Mar 28, 2017
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

Systems and methods for quantifying combustion arrester performance are disclosed. Methods include filling an upstream volume and a combustion arrester with a flammable gas, igniting the flammable gas in the upstream volume (and upstream of the combustion arrester), measuring a composition of gas discharged from the combustion arrester due to ignition of the flammable gas, and quantifying the performance of the combustion arrester based on the composition of gas measured. The measured gas composition may include types and/or amounts of combustion species within the gas discharged from the combustion arrester.

First claim

The invention claimed is:

1. A method of quantifying combustion arrester performance, the method comprising:
filling an upstream volume and a combustion arrester with a flammable gas;
igniting the flammable gas in the upstream volume, upstream of the combustion arrester;
measuring a composition of gas discharged from the combustion arrester, downstream of the combustion arrester, after igniting the flammable gas; and
based on the composition of the gas measured, quantifying a non-binary quantification of the effectiveness of the combustion arrester stopping a combustion front associated with igniting the flammable gas.

2. The method of claim 1 , wherein measuring the composition includes measuring a quantity related to an amount of a combustion species in the gas discharged from the combustion arrester.

3. The method of claim 2 , wherein measuring the quantity includes measuring the quantity related to the amount of the combustion species that is one of a hydroxyl radical, water, carbon dioxide, carbon monoxide, formaldehyde, nitric oxide, nitrous oxide, hydrogen, methanol, and a hydrocarbon fuel.

4. The method of claim 1 , wherein measuring the composition includes measuring a cross-sectional composition profile of the gas discharged from the combustion arrester.

5. The method of claim 1 , wherein measuring the composition includes measuring the composition of the gas without interfering with gas flow from the combustion arrester.

6. The method of claim 1 , wherein measuring the composition includes optically interrogating the gas discharged from the combustion arrester.

7. The method of claim 1 , wherein measuring the composition includes measuring the composition of the gas by one or more of planar laser-induced fluorescence, laser-induced fluorescence, laser-excited atomic fluorescence, and Fourier transform infrared spectroscopy.

8. The method of claim 1 , wherein measuring the composition includes measuring the composition of the gas by one or more of mass spectrometry, gas chromatography, and gas chromatography mass spectrometry.

9. The method of claim 1 , further comprising measuring a temperature of the gas discharged from the combustion arrester and wherein quantifying includes quantifying the non-binary quantification of the effectiveness of the combustion arrester stopping the combustion front associated with igniting the flammable gas based on the temperature of the gas discharged from the combustion arrester.

10. The method of claim 9 , wherein measuring the temperature includes measuring the temperature by coherent anti-Stokes Raman spectroscopy.

11. The method of claim 1 , wherein filling the upstream volume includes filling an upstream chamber that defines the upstream volume, the combustion arrester, and a downstream chamber with the flammable gas, and includes equalizing temperature of the flammable gas, the upstream chamber, the combustion arrester, and the downstream chamber, before igniting the flammable gas.

12. The method of claim 1 , wherein filling the upstream volume includes filling an upstream chamber that defines the upstream volume, the combustion arrester, and a downstream chamber with the flammable gas, wherein the upstream volume is a closed volume of the upstream chamber before igniting the flammable gas, and wherein the downstream chamber defines a closed downstream volume before igniting the flammable gas.

13. A system for quantifying combustion arrester performance, the system comprising:
a combustion arrester having an upstream end and a downstream end;
an ignition source upstream from the combustion arrester;
a sensor system with a sensed volume at the downstream end of the combustion arrester, the sensor system configured to measure a composition of gas discharged from the downstream end of the combustion arrester; and
a controller configured to quantify, based on the composition of gas measured by the sensor system, a non-binary quantification of the effectiveness of the combustion arrester stopping a combustion front.

14. The system of claim 13 , wherein the sensor system is configured to measure a quantity related to an amount of a combustion species in the gas discharged from the downstream end of the combustion arrester.

15. The system of claim 13 , wherein the sensor system is configured to measure a cross-sectional composition profile of the gas discharged from the downstream end of the combustion arrester.

16. The system of claim 13 , wherein the sensor system includes at least one of a planar laser-induced fluorescence apparatus, a laser-induced fluorescence apparatus, a laser-excited atomic fluorescence apparatus, an optical spectrometer, and a Fourier transform infrared spectrometer.

17. The system of claim 13 , wherein the sensor system includes at least one of a mass spectrometer, a gas chromatograph, and a gas chromatography mass spectrometer.

18. A system for quantifying combustion arrester performance, the system comprising:
a combustion arrester having an upstream end and a downstream end;
an ignition source upstream from the combustion arrester; and
a sensor system with a sensed volume at the downstream end of the combustion arrester, the sensor system configured to measure a composition of gas discharged from the downstream end of the combustion arrester;
wherein the sensor system is configured to:
measure a first quantity related to a first amount of a transient combustion species in the gas discharged from the downstream end of the combustion arrester;
measure a second quantity related to a second amount of a stable combustion species in the gas discharged from the downstream end of the combustion arrester; and
based on the first quantity and the second quantity, quantify a non-binary quantification of the effectiveness of the combustion arrester stopping a combustion front.

19. The system of claim 18 , wherein the sensor system includes a planar laser-induced fluorescence apparatus configured to measure the first quantity related to the first amount of the transient combustion species.

20. The system of claim 18 , wherein the sensor system includes a gas chromatograph configured to measure the second quantity related to the second amount of the stable combustion species.

21. A method of quantifying combustion arrester performance, the method comprising:
filling an upstream volume and a combustion arrester with a flammable gas;
igniting the flammable gas in the upstream volume, upstream of the combustion arrester;
measuring a composition of gas discharged from the combustion arrester, downstream of the combustion arrester, after igniting the flammable gas;
measuring a temperature of the gas discharged from the combustion arrester; and
quantifying a performance of the combustion arrester based on the composition of gas measured and based on the temperature of the gas discharged from the combustion arrester.

22. The method of claim 21 , wherein measuring the temperature includes measuring the temperature by coherent anti-Stokes Raman spectroscopy.

Assignees

• Boeing Co
• Univ King Abdullah Sci & Tech

Inventors

• Damazo Jason Scott
• Lacoste Deanna A
• Kwon Eddie
• Roberts Iv William Lafayette

Classifications

• G01N33/0036

  specially adapted to detect a particular component (physical analysis of gaseous biological material G01N33/497) · CPC title

• F23D14/82

  Preventing flashback or blowback · CPC title

• A62C37/50 Primary

  Testing or indicating devices for determining the state of readiness of the equipment · CPC title

• A62C4/02

  in gas-pipes (safety valves F16K17/00) · CPC title

• A62C4/00

  Flame traps allowing passage of gas but not of flame or explosion wave · CPC title