Technology for delivering soft clay by using low air pressure long-distance pipe

Abstract

The invention discloses a technology for delivering clay by using a low air pressure long-distance pipe, relating to a non-Newtonian fluid Pingham delivery technology comprising soft clay feed, surface film coating, pneumatic pushing and intelligent control. The technology is characterized in that two pneumatic delivery tanks are at least arranged below a collecting hopper for alternately workingto press soft clay into a delivery pipeline; by adopting a pneumatic pushing technology combining air bubble surface film drag reduction and non-continuous phase column flow, surface film nozzles arearranged between discharge holes of the delivery tanks and the delivery pipeline and a dehydrated lubricating agent is properly coated between the soft clay and the inner wall of the delivery pipeline; a gas distributor, a film-liquid distributor, a feeding valve and a feed-exhaust air valve are respectively connected with an electric controller by leads; and an industrial control computer is used for resolving according to signals of a pressure sensor and an on-way resistance sensor and adjusting the amount for injecting gas and film liquid, so that total push force is more than or close to total resistance, and lower air pressure, lower energy consumption and long-distance pipeline delivery of the soft clay can be realized. The invention solves the national difficult problem of long-distance pipeline delivery of soft clay materials, has the characteristics of low air pressure, low energy consumption and long distance, and is widely applied to petroleum, chemical engineering, mining,water conservancy, environmental protection, building and other aspects.

Description

technical field [0001] The invention is a novel method and equipment for long-distance pipeline transportation of soft clay, and relates to non-cow flow—Bingham body (Bingham) transportation technology. Background technique [0002] The clay layer is very important as anti-seepage in dyke engineering. In the construction of coastal engineering and island engineering, it is often required to take soil hundreds of meters or even thousands of meters away from the dam to carry out the air-tightening of the dam. This kind of soil layer is highly viscous, low in strength, and high in water content. Land machinery cannot get off it, and water machinery cannot come up. It is difficult for existing equipment to function, and manual construction cannot be performed. [0003] In reservoirs, lakes, and river courses, over time, thicker and thicker mud layers are gradually deposited, raising the river bed. This not only reduces storage capacity, pollutes the environment, and affects tra...

AI Technical Summary

Problems solved by technology

However, except for the members of this research group, no effective method has been found to realize the method and equipment for long-distance pipeline transportation of soft and viscous materials.

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