Study on the Measurement Method of Gypsum Slurry Flow in Large Diameter Pipe

At present, in thermal power plants, generally in the small diameter of the pipeline through the installation of electromagnetic flowmeter to measure the amount of gypsum slurry injection. However, there is no gypsum grout meter on the market for large pipe diameter of more than 1 meter. According to the above characteristics, this paper aims to develop a large tube runoff measurement instrument. Proposed in this paper by using time difference method of flow measurement principle of ultrasonic sensor array, and the temperature characteristic of ultrasonic sensor and frequency characteristic was tested, finally using the sensor array of gypsum slurry was tested. Test results show that the sensor array based on ultrasonic technology to the measurement precision can reach 5%, the amount of gypsum slurry can satisfy the demands of field measurement.