Double-pipeline concentrated phase delivery system parallel discharge and blockage device and automatic control method

Abstract

The invention provides a double-pipeline concentrated phase delivery system parallel discharge and blockage device and an automatic control method. Each delivery pipeline of a double-pipeline concentrated phase delivery control system is additionally provided with an electronic control pneumatic valve, and the electronic control pneumatic valves are used for communicating paralleled pipelines. A programmable logic control (PLC) system is connected with the electronic control pneumatic valves and used for controlling the electronic control pneumatic valves. In the normal process of material delivery, a monitoring system continuously monitors pressure change conditions of a jet pump and pipelines, when pressure change has a blockage trend, the parallel discharge and blockage device is started to pressurize the delivery system, and therefore the phenomenon that the pipelines are blocked by materials can be avoided. When pipeline blockage due to the facts that air source pressure drops suddenly, a protection program carries out actuation and the like happens, the parallel discharge and blockage device is started, and blocked pipelines can be dredged. By means of the double-pipeline concentrated phase delivery system parallel discharge and blockage device and the automatic control method, stable delivery of aluminum electrolysis materials can be achieved, timely and stable feeding of the materials can be guaranteed, and influences on the pipelines because of the pipeline blockage can be reduced.

Description

[0001] technical field [0002] The invention relates to the technical field of pneumatic conveying, in particular to a parallel blockage removal device and an automatic control method for a double-pipe dense-phase conveying system. Background technique [0003] In recent years, with the development of production and the automation of the production process, the requirements for energy conservation and environmental protection have become higher and higher. Pneumatic conveying technology has been rapidly developed and applied by virtue of its own technical characteristics. In the process of continuous exploration and innovation, pneumatic conveying has been widely used in the metallurgical industry. The transportation method has changed from primitive and simple to perfect and reasonable today, from dilute phase suspension transportation to dense phase transportation, which has initially solved the problems of high energy consumption, pipeline wear and material crushing in p...

AI Technical Summary

Problems solved by technology

In some specific cases, there will be poor movement of materials, that is, blockage may occur

Although the dense-phase conveying technology has been continuously optimized and perfected, due to the shortcomings of the dense-phase conveying technology itself and the long conveying distance of the dense-phase conveying system, the wear and tear of the pipeline is inevitable. Blockage of pipelines, especially in the following specific situations: ① changes in material properties; ② changes in pipeline status; After the associated control point fails, the protection program will act, which will cause the material to block the pipeline

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