Mine filling slurry parameter detection method and monitoring device

Abstract

The invention discloses a mine filling slurry parameter monitoring device, comprising an arc transmitting base and an arc receiving base, which are arranged at the outer side of a slurry pipeline, wherein an ultrasonic transmitting transducer is arranged on the transmitting base; an ultrasonic wave receiving transducer is arranged on the receiving base; the transmitting base and the receiving base are arranged along the axis of the slurry pipeline in a skewing manner; the ultrasonic transmitting transducer, the ultrasonic receiving transducer and a temperature sensor are connected with a signal processing calculation center and a control display module through a signal transmission module. By adopting the mine filling slurry parameter detection method and monitoring device disclosed by the invention, the parameters such as slurry temperature, concentration and flow at different layers and the like are detected circularly by using paired ultrasonic transmitting transducer and ultrasonic receiving transducer in different modes; a real-time monitoring signal is provided for slurry preparation and pipeline transportation; the concentration and flow velocity parameters of the slurry are measured, displayed and output in a stand-alone manner; the concentration distribution inside the pipeline and the flow velocity distribution condition are monitored; a blocking pipe accident is early warned.

Description

technical field [0001] The invention relates to the technical field of pipeline transportation and slurry mixing in mine filling and beneficiation, in particular to a mine filling slurry parameter detection method and a monitoring device. Background technique [0002] The pipeline transportation concentration and flow monitoring technology of solid-liquid two-phase flow is widely used in fields such as mine filling, tailings discharge from dressing plants, coal-water slurry transportation, fly ash discharge from power plants, etc. It is directly related to slurry quality, transportation effect, transportation Capability is a key indicator of system design, industrial control, and technology management. At present, in the monitoring of slurry concentration and flow rate, there are mainly the following methods and equipment: 1) The manual pot method calculates the volume composition and slurry density of various materials, which is labor-intensive and time-consuming, and canno...

AI Technical Summary

Problems solved by technology

At present, there are mainly the following methods and equipment in the monitoring of slurry concentration and flow rate: 1) The manual pot method calculates the volume composition and slurry density of various materials, which is labor-intensive and time-consuming, cannot realize online monitoring, and cannot give control signals ;2) The nucleon concentration meter is made of the principle of γ-ray attenuation, which can realize on-line monitoring and control signal output, but has a single function and has certain radiation pollution. It needs strict safety certificates and regular inspections during use, and the cost is high. Once lost The consequences are unimaginable; 3) The ultrasonic concentration meter is made of the principle of time shift, frequency shift or sound attenuation when the ultrasonic wave propagates in the measured body. Most of them are monophonic structures and cannot monitor the concentration of the slurry along the pipe diameter. 4) Electromagnetic flowmeter, based on Faraday’s electromagnetic induction principle, requires a uniform distribution of the magnetic field and a symmetrical distribution of the fluid flow rate, which is affected by the electromagnetic flow of mechanical equipment. The impact is great, and it cannot be applied in principle when the slurry has segregated settlement and turbulent flow; 5) Ultrasonic flowmeters are made based on the principle of penetrating, transmitting, and receiving ultrasonic frequency shift or sound attenuation, and most of them are monophonic The single-directional test structure cannot monitor the flow distribution of the slurry along the pipe diameter, nor can it predict the slurry segregation and blockage

Images