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| Study on the Characteristics of Electrostatic Sensor Inserted into Pipes |
| KAN Zhe1,SHAO Fu-qun2,LI Cheng-zhi2,LI Qing-hua3 |
1. Liaoning Petrochemical University, Fushun, Liaoning 113001, China
2. Northeastern University, Shenyang, Liaoning 110004, China
3. China Petroleum Liaoyang Petrifaction Branch Company, Liaoyang, Liaoning 111003, China |
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Abstract The electrostatic sensor inserted into pipes is successfully applied for measuring the parameters of the gas-solid two phase flow and ensuring the safety during the gas-solid two phase flow convey.Through establishing the mathematical model of the probe, the inserted depths,spatial filter characteristics and the spatial sensitivity characteristics of the inserted probe are discussed. The situation which the particles position effect on the induced charges of the probe, and the relation between the inserted depth of probe and the signal amplitude measured are obtained. For the continuous flow of solid particles inserted probe,the optimum inserted depth is 1/2 of the pipe diameter and the probe has low-pass filter characteristic.The expression about the solid particle velocity and the measured signal cut-off frequency is obtained during deducing spatial filter characteristic of the probe with probe mathematics model.The measured results confirm the spatial filter characteristic and spatial sensitivity characteristic of the probe.
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2011, Vol. 32 
