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Air flow velocity measuring device based on ion tracing and measuring method thereof

A technology of air velocity and measuring device, which is applied in the direction of fluid velocity measurement, measuring device, velocity/acceleration/shock measurement, etc. It can solve problems such as inability to obtain air velocity information and lack of charged particles, and achieve convenient and fast signal processing, simple structure, The effect of low equipment cost

Active Publication Date: 2018-10-19
南京星空能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the airflow with few particles or no particles, the flow process lacks charged particles, and it is not easy to g

Method used

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  • Air flow velocity measuring device based on ion tracing and measuring method thereof
  • Air flow velocity measuring device based on ion tracing and measuring method thereof
  • Air flow velocity measuring device based on ion tracing and measuring method thereof

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Embodiment 1

[0047] Such as figure 1 As shown, the present invention provides a specific embodiment of an ion tracer-based airflow velocity measurement device. In this embodiment, the measurement device includes a high-voltage ion generation source, an induction electrode and a signal processing device.

[0048] The high-voltage ion generation source of the present invention comprises a DC high-voltage power supply 1, a high-voltage cable 2, a corona electrode 3 and a grounding electrode 4. The DC high-voltage power supply 1 is used to generate a stable DC high-voltage supply to the corona electrode 3, which can effectively avoid the impact of the AC power supply on The signal from the sensing electrode is disturbed. The high-voltage cable 2 is used for long-distance high-voltage transmission. The corona electrode 3 is connected to the positive pole of the DC high-voltage power supply 1 through the high-voltage cable 2. The ground electrode 4 is connected to the negative pole of the DC hig...

Embodiment 2

[0079] Such as Figure 4 As shown, the present invention provides another specific embodiment of an ion tracer-based airflow velocity measurement device. In this embodiment, the measurement device includes a high-voltage ion generation source, an induction electrode, and a signal processing device.

[0080] The difference is: the corona electrode 3 and the ground electrode 4 of the high-voltage ion generating source in this embodiment are both sawtooth electrodes; in the embodiment 1, the corona electrode 3 is a sawtooth electrode, and the ground electrode 4 is a flat electrode.

[0081] This embodiment can be used for complex multiphase flow velocity measurement and air velocity measurement with low particle concentration.

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Abstract

The invention discloses an air flow velocity measuring device based on ion tracing and a measuring method thereof. Tracer ions are generated by using a high-voltage air ionization method, so that thesignal-to-noise ratio of the sensing signal is improved. Therefore, the measuring device and the measuring method are not limited by the lower limit of particle concentration and even do not need charged particles, so that the strict requirement on the state of the to-be-measured object is avoided. The measurement range is wide. The measuring device and the measuring method can be applied to complex multi-phase flow velocity measurement and airflow velocity measurement with low particle concentration.

Description

technical field [0001] The invention relates to the field of airflow velocity detection, in particular to an ion trace-based airflow velocity measurement device and a measurement method thereof. Background technique [0002] At present, multiphase flow systems widely exist in energy, chemical industry, electric power and metallurgy and other industrial fields, especially in the flow of flue gas in thermal power plants and power plants. The optimal control of the industrial production process can be realized through the online measurement of the key parameters of the multiphase flow. The state and efficiency of the combustion process in the thermal power coal-fired boiler are affected by various multiphase flow systems, such as the pulverized coal in the primary air duct of the boiler. Concentration, velocity and mass flow directly affect the combustion status of the boiler, and the velocity, composition and flow of flue gas at the flue outlet indirectly reflect the combustio...

Claims

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Application Information

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IPC IPC(8): G01P5/22
CPCG01P5/22
Inventor 周宾刘鹏飞贺文凯陶依贝
Owner 南京星空能源科技有限公司
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