Method for measuring flame propagation velocity of Bunsen burner during combustion process of gaseous fuel
A flame propagation speed and gas fuel technology, which is applied in the field of flame propagation speed measurement, can solve the problems of complex measurement process and low accuracy, and achieve the effects of simple measurement process, improved accuracy and error elimination.
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specific Embodiment approach 1
[0016] Specific implementation mode 1. Combination figure 1 Illustrate this specific embodiment, the measurement method of flame propagation velocity of gaseous fuel in the combustion process of Bunsen burner, it is realized by the following steps:
[0017] Step 1, in the Bunsen burner burner 16, feed the gas fuel with a flow rate of Q, and ignite the gas fuel at the mouth of the Bunsen burner burner 16 to generate a Bunsen burner flame;
[0018] Step 2, adjust the focal length between the Bunsen burner flame and the CCD imager 17 through the focusing telescope 18 arranged at the optical input end of the CCD imager 17, and then use the CCD imager 17 to perform N times of imaging on the Bunsen burner flame to obtain N sheets image;
[0019] Step 3, perform brightness analysis on each image obtained in step 2, and perform curve fitting after edge extraction to obtain a fitted curve;
[0020] Step 4, performing surface integration on the area enclosed by the fitted curve obtain...
specific Embodiment approach 2
[0026] Embodiment 2. The difference between this embodiment and the method for measuring the flame propagation velocity of the gaseous fuel in the combustion process of the Bunsen burner described in Embodiment 1 is that the flame propagation of the gaseous fuel in the flame process of the Bunsen burner The speed measurement method is characterized in that the gas fuel is a mixed fuel of methane, oxygen and nitrogen.
specific Embodiment approach 3
[0027] Specific embodiment three, the difference between this specific embodiment and the method for measuring the flame propagation velocity of the gaseous fuel described in specific embodiment two in the combustion process of the Bunsen burner is that the volume ratio of the methane is 6% to 50%, oxygen The volume ratio of nitrogen is 13% to 70%, and the volume ratio of nitrogen is 10% to 80%.
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