Water cushion pond filling and drainage system capable of generating electricity

Abstract

The invention relates to a plunge pool water filling and discharging system capable of generating electricity, aiming at providing a plunge pool water filling and discharging system which is capable of generating electricity, is convenient to overhaul, safe, reliable and easy in running and maintenance, and can reduce energy consumption. The invention has the technical scheme that the plunge pool water filling and discharging system capable of generating electricity is provided with a dam, a plunge pool, an auxiliary weir and a downstream river channel, wherein a drainage gallery of the auxiliary weir is internally provided with a water pumping energy storage power generation plant; the plant is internally provided with a reversible type water pump hydroelectric generating set; under the working condition of a water pump, a water inlet of the reversible type water pump hydroelectric generating set is communicated with the plunge pool by a pipeline I buried in the auxiliary weir, and a water outlet is communicated with the downstream river channel by a pipeline II buried in the auxiliary weir; a mountain body at one side of the auxiliary weir is provided with a regulating reservoir used for converging the mountain earth surface water seepage of the both sides of the plunge pool and the leakage water of the dam, the plunge pool and an underground plant; the regulating reservoir is higher than the water level of the downstream river channel; the regulating reservoir is communicated with the pipeline II by a water diversion power generation pipeline. The plunge pool water filling and discharging system is suitable for the hydraulic and hydroelectric engineering.

Description

technical field [0001] The invention relates to a pad pond filling and drainage system capable of generating electricity. Applicable to water conservancy and hydropower projects. Background technique [0002] The water cushion pond is an energy dissipation and anti-scour protection project behind the arch dam, which prevents the dam foundation from being eroded and damaged after the arch dam is discharged, and protects the safety and stability of the dam. Usually, when the arch dam is in flood discharge operation, or when the bank slope collapses during heavy rain, it may cause erosion damage to the cushion pond. In order to ensure the safety of the dam, it is generally necessary to carry out pumping maintenance on the pad pond on a regular basis. At present, the ponds of Ertan, Laxiwa, Xiaowan and other large hydropower stations built in my country mostly use temporary filling and drainage systems to pump and empty the ponds for maintenance. [0003] Temporary filling an...

AI Technical Summary

Problems solved by technology

[0004] 1 The system construction workload is heavy, and the drainage system and assembly procedures are cumbersome;

[0005] 2 The whole process of the system basically requires manual intervention, which cannot realize automatic control and monitoring, and is inconvenient for operation and maintenance;

[0006] 3. The pumping system equipment is all arranged outdoors, the failure rate of the drainage system is high, the work efficiency is low, and the drainage time is long;

[0007] 4 Temporary power supply and mechanical and electrical equipment are exposed, which may bring safety hazards to the staff

However, this solution also has many disadvantages, mainly: the probability of flood discharge of the dam is relatively low, so the maintenance probability of the water cushion pond is not very high, and the maintenance may be completed once a year or only once a few years. However, the pump room is located in the second dam body behind the water cushion pond. The ventilation and drying conditions are poor, the air is humid, and the failure rate of electrical equipment is high. malfunction or reach the end of its useful life

At the same time, in order to keep the pump room dry, a large number of ventilation and dehumidification equipment need to be installed, and the cost of dehumidification and ventilation to keep the pump room dry is also very high, so its practical value is not very high

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