SU1432145A1 - Bed for investigating suction and conveying of hydraulic fluid - Google Patents

Abstract

The invention relates to a hydraulic transport, in particular to devices for studying the processes of suction and transportation of soils. The goal is to increase the reliability of research results by eliminating changes in the physical and mechanical properties of the soil. The stand includes a hydraulic pump 1 with an electric motor (ED) 2 and capacity. The tanks 5, 8 for the slurry are interconnected by a pipe (T) 9, at the end sections of which the flexible corrugated hoses 10, 11 are fixed. The tanks 3, 4 for clean water have sensors 18, 19 of the liquid level installed in the electric circuit of the pump ED 2 control 1. The latter is installed in T messages of containers 3, 4, which communicate with containers 5, 8 by means of additional T ducts 6 and 7. In the initial position, tank 5 is filled with hydraulic mixture, and tank 3 connected with it by duct is emptied. After switching on the ED 2, the pump 1 begins to pump clean water from the tank 4 to the tank 3. In the tank 4, a vacuum occurs and the water entering the tank 3 displaces the air through the duct 6 into the tank 5. Due to the appearance of a differential pressure, the liquid T 9 enters the tank 8. I Il. Q to (L

Description

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The invention relates to hydraulic transport, in particular, to devices for: investigating the processes of suction and transportation of soils.

The purpose of the invention is to increase the accuracy of the research results by eliminating changes in the physical and mechanical properties of the soil.

The drawing shows the layout of the test bench for the study of the absorption and transport of the slurry.

The bench for the study of suction and transportation of the slurry contains a hydraulic pump 1 with an electric motor 2. The inlet and outlet of the pump 1 are connected respectively to the containers 3 and 4 for a clean liquid. The container 3 is connected to the tank 5 for the slurry through the duct 6, and the pipe 7 connects the tank 4 to the tank 8 1 dl of the slurry. Air ducts 6 and 7 are located above tanks 3, 4, 5 and 8. Tanks 5

and 8 for the slurry are interconnected 20 repeats.

{by pipe 9 for the slurry, at the end-To change the soil, the valve 16 is opened,

parts of which are fixed flexible

corrugated hoses 10 and 11. Pipeline 9 contains interchangeable elements 12, instrumentation equipment 13 and 14.

I Capacity 8 for slurry in the E of the top 25

: It has a loading port 15, and at the bottom and the stand is emptied of the slurry, while the taps 20 and 21 are closed. New soil is loaded through the hatch 15. Valves 17 are used to enter the compressed gas.

drain valve 16.

; The containers 3 and 4 for clean water are equipped with non-return valves 17, mounted in their upper part, and sensors-relays 18 and 19 of the level, fixed on 1 side walls of the containers. Air ducts 6 and 7 | are equipped with taps 20 and 21. I Stand works as follows. I In the initial position, one of the slurry tanks |, for example, 5 is filled, and {the duct 6 connected to it by the duct 6 for clean water is emptied. Flexible sleeves 10 and 11 are lowered down. The containers 3 and 4 are filled with compressed gas. After turning on the electric motor 2, the pump 1 {starts to pump clean liquid, such as water, from the tank 4 to the tank 3. At the same time, a vacuum occurs in the tank 4 and the tank 8 connected to it. Water,

entering into the tank 3, displaces air by

thirty

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40

Claims (1)

Invention Formula A bench for researching the suction and transportation of the slurry, including a pump with an electric motor and an electric circuit controlling the pump electric motor, a slurry tank communicating with each other through a pipeline for transporting the slurry, clean water tank, made with non-return valves and communicating with each other through a pipeline, flexible hoses and instrumentation equipment, characterized in that, in order to increase the reliability of the research results, the clean water tank They are equipped with liquid level sensors installed in the electric circuit of the pump motor control, the pump is installed in the pipeline to communicate with clean water tanks, the latter are connected to the slurry tanks through the pre-air duct 6 to the tank 5, and additional pipes are installed there. The hoses are installed at the ends of the pipes and the liquid through the pipeline 9 starts a pipe for transporting the slurry. 0 five enter the container 8. Solid particles entrained by the flow enter through the inlets of the hose 10 into the pipeline 9 and further into the container 8. The hose 10 is lowered under the force of gravity, being on the EsepxHOCTH of the soil. This provides a constant slurry consistency. The hose 11 under the action of the dynamic pressure of the flow and jet force of the jet oscillates in the space of the tank 8. Due to these oscillations, the hose 11 is above the layer of the soil deposited in the tank 8. Gradually filling the tank 3, the liquid rises and switches the level sensor-relay 8, which gives a signal to stop or reverse the turning of the electric motor 2 and, consequently, the flow direction in the pipeline 9 changes. The reverse process occurs, and the cycle 0 is repeated. and the stand is emptied of the slurry, with the taps 20 and 21 closed. New soil is loaded through the hatch 15. Valves 17 are used to enter the compressed gas. Invention Formula A bench for researching the suction and transportation of the slurry, including a pump with an electric motor and an electric circuit controlling the pump electric motor, a slurry tank communicating with each other through a pipeline for transporting the slurry, clean water tank, made with non-return valves and communicating with each other through a pipeline, flexible hoses and instrumentation equipment, characterized in that, in order to increase the reliability of the research results, the clean water tank equipped with liquid level sensors installed in the electric circuit of the motor control of the pump, the pump being installed in the pipeline to communicate with clean water tanks, and the latter are connected to the tanks for the slurry through additional pipelines that