An on-line measurement device and measurement method for pulverized coal flow
A measuring device and pulverized coal technology, applied in mass flow measuring devices, indirect mass flow meters, etc., can solve the problems of heavy workload, large measurement error, low resolution, etc., to improve measurement accuracy, avoid pipeline powder accumulation, Optimizing the effect of boiler combustion
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[0038] see figure 1 and figure 2 , the structure of the pulverized coal flow online measuring device in the present embodiment is:
[0039] A section of measuring tube 1 is set in series on the primary air duct. The measuring tube 1 is made of ceramic material, which can prevent the erosion and wear of coal powder. 2n electrode plates 2 are evenly distributed in a circular shape on the outer wall of the measuring tube 1, and the 2n electrode plates 2 form n rectangular plate capacitors facing each other in pairs; the capacitance of the plate capacitors is used as the output signal of the measuring device.
[0040] Such as figure 1 and figure 2 As shown, in the present embodiment, each shielding case 3 is independently arranged on the outer wall of the measuring tube 1, and the shielding case 3 is a metal mesh covering layer, and each electrode plate 2 is independently enclosed in the shielding case 3 at its respective position; two groups of capacitors The axial distance...
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