Multifunctional selective withdrawal device and method based on flexible water insulation principle

Abstract

The invention discloses a multifunctional selective withdrawal device based on a flexible water insulation principle. The device comprises an operation maintenance layer, an aquifer and a water diversion layer, wherein the operation maintenance layer comprises electric hoists, an aquifer maintenance inlet, a bulkhead gate slot and a service gate slot; the aquifer comprises a water pump, a water pump water inlet pipe, reservoir water supply pipes, a rubber bag water supply and drain pipeline, a water supply and drain main, a rubber bag water supply main, a rubber bag water drain main, a T-shaped tube, valves, a reservoir water drain pipe, an air extractor and a blower aerating apparatus; and the water diversion layer comprises trash racks, water diversion ports, water diversion runners, rubber bags, a drain bottom hole port, a drain bottom hole, an emergency exit, a water diversion through bin, a bulkhead gate, a service gate, a vent, an aqueduct, a pump-out pipeline, an aerated conduit, aerators and air content probes. According to the multifunctional selective withdrawal device and method, flexible, accurate, safe and large range of water intake of different water layers can be achieved, the intake water quality can be also calibrated and regulated so as to meet water quality requirements of downstream water, the operation maintenance is convenient, and the application range is wide.

Description

technical field [0001] The invention relates to a multifunctional layered water intake device and method based on the principle of flexible water isolation, and belongs to the technical field of water conservancy and hydropower engineering. Background technique [0002] Generally, the hydraulic retention time of deep-water reservoirs is relatively long, and it is easy to form vertical stratification of water temperature under the action of thermal radiation, including the warm water layer with higher temperature in the upper layer, the deep-water isothermal layer with lower temperature in the lower layer, and the transitional thermocline layer in between. . Long-term low-temperature environment in the deep layer of the reservoir will cause insufficient oxygen content, decrease in plankton, and decline in water quality. Since the elevation of the water inlet of the hydropower station is always below the dead water level of the reservoir, the single deep water intake mode wil...

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Problems solved by technology

This type of hard water isolation technology has obvious shortcomings: (1) a large number of gates and gate opening and closing equipment are required, and the gate design, construction and gate operation of the water intake structure are very complicated, and the failure rate is high; (2) the water intake tower The internal clearance is large, and the gate part often occupies most of the water intake building, which becomes a burden in the operation and structural design of the entire water intake device, and the cost is high; (3) basically only considers the water temperature demand of downstream water, and cannot Water is needed to provide water quality assurance. On the one hand, it is impossible to adjust the water intake device when the gas content of the water source is too high or too low. On the other hand, the water quality may deteriorate due to unreasonable device design during the water intake process.

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