Metal particle flow velocity measuring device and method based on triangular electrode capacitance sensor

The invention discloses a metal particle flow velocity measuring device based on a triangular electrode capacitance sensor. The device comprises a triangular electrode differential capacitance sensorfor detection, a signal acquisition circuit and a computer which are electrically connected in sequence. The triangular electrode differential capacitance sensor comprises an insulating pipeline whichis provided with an upstream electrode pair and a downstream electrode pair. Shielding electrodes are arranged above the upstream electrode pair, between the upstream electrode pair and the downstream electrode pair and below the downstream electrode pair respectively. The outside of the insulating pipeline is sleeved with a metal shielding cover. The invention further discloses a metal particleflow velocity measuring method based on a triangular electrode capacitance sensor. The computer calculates the velocity of metal particles by analyzing output signals of the sensor. The sensor devicedisclosed by the invention h