Constant head mass-flow seepage deformation water pressure automatic control device

Abstract

A constant head mass-flow seepage deformation water pressure automatic control device comprises a water supply tank, a water inlet pipe is arranged at the bottom of the water supply tank, and the bottom of the water supply tank is communicated with the bottom of a seepage deformation instrument through a water conveying pipe which is provided with a booster pump, an automatic waterflow regulation valve and a pressure gage. The booster pump and the automatic waterflow regulation valve are used for ensuring that constant head mass-flow seepage deformation water with stable pressure is provided for the seepage deformation instrument, and accuracy and stability of experiment data are ensured. A water return pool and a water return pipe with a self-priming pump are arranged to recycling seepage deformation water, and the water resource is saved. Due to the fact that water is recycled in the indoor environment, external water is not needed, water temperature changes in the testing process are effectively controlled, influences of water temperature on a testing result are eliminated, and testing precision is improved. Through the combination of the booster pump, the automatic waterflow regulation valve and the high-precision pressure gage, automatic control is achieved, and labor intensity in the testing process is greatly lowered.

Description

technical field [0001] The invention relates to the field of osmotic water experiments, in particular to an automatic control device for osmotic deformation water pressure with constant water head and large flow. Background technique [0002] With the continuous improvement of the level of science and technology and the degree of construction mechanization, various earth-rock materials and earth-rock mixed materials are used in the filling engineering of earth-rock dams. Since earth-rock dams are water-retaining structures, they coexist with seepage and seepage. There is seepage and seepage. The development history of earth-rock dams is the development history of seepage theory and seepage control. Therefore, ensuring the stability of building seepage to ensure safety is the primary issue. [0003] In view of the impact of earth-rock materials and earth-rock mixture materials on the seepage stability and safety of earth-rock dams, the seepage stability parameters are reflect...

AI Technical Summary

Problems solved by technology

And this water supply device has many deficiencies after many years of actual operation: 1, because this water supply device needs a large amount of water sources to provide continuously, the waste of water resources is larger; The constant adjustment of the water supply pressure is time-consuming and the water head pressure is unstable, which has a certain impact on the test process; 3. The brackets, wire ropes, and pulleys of the lifting device need to be maintained and replaced frequently due to long-term outdoor exposure to wind and sun. At the same time, the rubber tube connected to the outlet of the overflow weir will also be aged and replaced; 4. Due to the change of air temperature, the water temperature varies greatly during the test process, which has a great impact on the test results

The existing test needs to ensure the water volume of 2000ml per minute, the test time period is 3-5 days, the test intensity is high, and it is difficult to ensure the water head pressure during the long test process

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