Double-layer water pumping device and double-layer water pumping system

Abstract

The invention discloses a double-layer water pumping device and a double-layer water pumping system and relates to the technical field of layered water pumping. All partition boards in a pipe of the double-layer water pumping device divide the pipe into two water pumping cavities and at least one water separating cavity, the two water pumping cavities are communicated with upper and lower water containing layers respectively and separated by the water separating cavity, a water pumping pipe is movably inserted into the top end of the pipe, water-permeable holes are formed in the water pumping pipe in the water separating cavity, soft plugs which are in one-to-one correspondence to water pass channels and used for opening and closing the corresponding water pass channels are fixed on the water pumping pipe from top to bottom, the two water pumping cavities are opened by moving the water pumping pipe, and the opened water pumping cavities are communicated with the water separating cavity. The double-layer water pumping device is simple in structure and easy to operate, the water containing layers are closed and opened by moving the water pumping pipe up and down, so that the water pumping states of the upper and lower water containing layers can be controlled, and hydrogeological tests can be conducted on water containing layers in upper and lower positions in the same well hole simply and rapidly. The double-layer water pumping system is simple in structure and easy to operate.

Description

Technical field [0001] The present invention relates to the technical field of layered pumping, in particular to a double-layer pumping device and a double-layer pumping system. Background technique [0002] At present, when carrying out hydrogeological environmental geological survey and evaluation work, the identification of the distribution characteristics and water richness of aquifers is of great significance to the development and utilization of groundwater. In complex water storage geological areas such as multi-layer aquifers and block aquifers, the water level, water quality, and various hydrogeological parameters of different aquifers are different. It is necessary to complete the hydrogeology by drilling and layered pumping test test. [0003] Traditional stratified pumping tests usually require large-diameter boreholes and separate water-stopping and isolation of several aquifers that pass through, or separately drilling holes for each aquifer, and then pumping tests. ...

AI Technical Summary

Problems solved by technology

For example: the patent document with the application number 201420003791.9 discloses a layered pumping device, which extracts the upper layer water and the lower layer water respectively by controlling the up and down movement of the drill pipe of the double-sealed water pump, specifically when the drill pipe in the double-sealed water pump When moving upwards, the upper layer of water enters through the water inlet hole of the steel pipe, passes through the gap between the vertebral body on the drill pipe and the inner cone of the inner wall of the steel pipe, and outputs from the water hole of the water stop cap; when the double-sealed water pump When the drill pipe moves downward, the water in the lower layer enters through the perforated drill pipe, passes through the water outlet of the drill pipe, and is output from the water hole of the water stop cap to complete the extraction of the upper and lower layers of water. However, the pumping test device The water sealing effect in the pipe is relatively poor, and the mechanical switch is not easy to operate

The patent document with the application number 201620432433.9 discloses a layered water pumping structure, which includes more than one layer of water pumping parts, and the size of the more than one layer of water pumping parts gradually becomes smaller from top to bottom, and also includes a water pump that can extend into more than one layer. Part of the suction pipe and water pump, the suction pipe can carry the water pump down gradually, so as to complete the pumping test of different aquifers from top to bottom. However, before the test, it is necessary to shrink the borehole downward, and the drilling workload is relatively large. big

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