Mass flow measuring device for gas-solid two-phase flow

Abstract

The invention discloses a mass flow measuring device for gas-solid two-phase flow comprising a housing main body which has a tube structure; a sensor core body which is installed inside the housing main body; the sensor core body comprises a sensor substrate which has a tube structure; a concentration measuring capacitance sensor and an electrostatic ring speed measuring sensor are disposed on thesensor substrate, and the concentration measuring capacitance sensor and the electrostatic ring speed measuring sensor are isolated by a protection electrode; a signal processing box is disposed on the housing main body and electrically connected to the sensor core body; an integrated circuit for acquiring and processing measurement data of the concentration measurement capacitance sensor and theelectrostatic ring speed measurement sensor to obtain a mass flow rate of the gas-solid two-phase flow passing through the sensor core is disposed in the signal processing box. The gas flow two-phaseflow mass flow measuring device provided by the invention has stable and reliable performance, accurate measurement and convenient installation, and solves the problem of online measurement of coal powder mass flow in coal gasification project.

Description

technical field [0001] The invention relates to the technical field of fluid measurement, in particular to a mass flow measurement device for gas-solid two-phase flow. Background technique [0002] With the rapid development of the economy, the demand for energy is increasing day by day. In the face of serious waste of energy consumption and shortage of energy resources, optimizing energy structure and improving energy utilization efficiency are important guarantees for long-term sustainable development. Energy metering is the cornerstone of energy conservation, emission reduction, and environmental pollution reduction. Therefore, strengthening energy metering management and improving energy metering levels are important prerequisites and necessary means for promoting energy conservation and emission reduction. [0003] In the metallurgical industry, blast furnace pulverized coal injection is an important technical measure that can improve combustion efficiency and save a lo...

AI Technical Summary

Problems solved by technology

Although the coal injection technology is relatively mature at present, due to the complex flow process of the gas-solid two-phase fluid, it is difficult to find its flow law, and the measurement of the mass flow rate of the gas-solid two-phase fluid has become a difficult problem. Pressure-type and heat-balanced flow measuring devices, but these devices have limitations to varying degrees, have not been widely used in industrial production, and cannot reliably detect the quality of high-pressure gas-solid two-phase flow in each nozzle online and in real time. flow

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