Intelligent pumping experiment system

Abstract

The invention belongs to the technical field of hydrogeological test equipment, and specifically relates to an intelligent water pumping test system, which includes an installation base plate, a steel wire rope, a water pipe, a water pump, a liquid level gauge, a water pump cable, a liquid level gauge cable and a control box. hole, the through hole is directly facing the wellhead of the well, and the lifting mechanism capable of controlling the synchronous lifting of the steel wire rope, water pipe, water pump cable and liquid level gauge cable is provided on the installation base plate; an intelligent pumping test system adopting the technical solution of the present invention has a structure Simple and low cost, it can truly realize the precise automatic control of groundwater level and flow, and can also achieve multiple water level drawdowns. Compared with the traditional three drawdown pumping tests, the hydrogeological parameters obtained are more abundant and accurate.

Description

technical field [0001] The invention belongs to the technical field of hydrogeological experiment equipment, and in particular relates to an intelligent pumping experiment system. Background technique [0002] Hydrogeological parameters are important basic data for identifying groundwater occurrence status, water resource development evaluation, aquifer pollution risk assessment, and research on groundwater migration characteristics, while conducting groundwater drilling and pumping experiments is an important basis for identifying groundwater-related hydrogeological parameters. One of the means. At present, the groundwater drilling and pumping experiments are still mainly carried out manually. The water level in the well is regularly measured by using a multimeter and wires according to the time interval required by the specification. At the same time, the water meter or the water volume of the triangular weir is used to regularly measure the pumping flow. Manually recordin...

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Problems solved by technology

At present, the groundwater drilling and pumping experiments are still mainly carried out manually. The water level in the well is regularly measured by using a multimeter and wires according to the time interval required by the specification. At the same time, the water meter or the water volume of the triangular weir is used to regularly measure the pumping flow. Manually recording data has high labor costs. , poor data quality, and the inability to timely determine whether the accuracy and rationality of segment data meet the requirements of relevant specifications. It is a very traditional pumping test method.

With the continuous development of informatization, the Hydrogeological and Environmental Geological Survey Center of China Geological Survey (ZL201510501037.7) invented an automatic measurement system and method for multi-aquifer deep hole layered pumping tests, which can realize automatic measurement of water level and flow data. However, whether it is an unsteady flow pumping experiment or a steady flow pumping experiment, it is necessary to control the pumping flow to a relatively stable value or the water level and water volume to be relatively stable at the same time. According to a large amount of engineering experience, if the data is simply recorded in an automated way, The water pumping experiment cannot be successfully completed when the voltage is unstable, the water pump screen is clogged, and the water pump is weak for a long time; for this reason, Ma Jinbao (ZL201620348725.4) proposed an automatic water pumping experiment device for water wells, by adjusting the pump power (speed) However, when the groundwater inflow in the borehole is very small (generally <0.3L / s), the pump will run at a low speed for a long time, which is easy to burn the pump or affect the service life of the pump; Tianjin North China Engineering Survey and Design Co., Ltd. proposed a device for flow control and measurement in pumping experiments (ZL201721807583.4), but the components of the device are complex and cannot be automatically controlled; in view of the shortcomings of the above-mentioned inventions in actual engineering applications, it is impossible to Carry out marketing applications

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