Steady demixing blend-free water feeding device

Abstract

The invention discloses a steady demixing blend-free water feeding device, which comprises a plurality of layers of clapboards which are arranged in parallel along a water depth direction at one end of a model reservoir, wherein a through hole is reserved in the middle of each layer of the clapboard; a hole cover is arranged on each through hole; a stable outflow device is arranged over the middle part of each layer of the clapboard when water is fed; and a water feeding pipe is inserted into the through hole in each layer of the clapboard. The device of the invention adopts the layered clapboards and the stable outflow device and sequentially feeds water at different temperatures so that the fed water body stably and slowly flows into the model reservoir along the clapboards in all directions, that the fed water body does not directly impact the original water body of the model reservoir in a water feeding process and that high-speed blend does not happen are guaranteed, and the primarily required, steady and vertically layered water temperature distribution can be formed.

Description

Technical field [0001] The invention relates to a reservoir water temperature stratification simulation test device, in particular to a stable stratification without mixing water adding device. Background technique [0002] The water temperature of large reservoirs has obvious characteristics of layered distribution along the depth. The surface water temperature and the bottom water temperature are very different, sometimes the temperature difference can reach about 20 ℃ (Huang Yongjian, 1986). The water inlets of conventional hydropower stations are all single-layer water inlets. The water inlet is set close to the bottom of the reservoir. During power generation, the discharge water is basically the bottom water body of the reservoir, and its water temperature is low, which affects the ecological environment of the downstream reaches. In recent years, with the emphasis on ecological and environmental protection, the multi-level intake structure (MLIS) of hydropower stations is ...

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Problems solved by technology

Robert Ettema (2004) used three pipelines with different vertical positions to supply water with different temperatures to form water temperature stratification. Water with a water temperature of 0°C flows in along the bottom layer, water with a water temperature of 16-18°C flows in along the middle layer, and the water temperature is 32°C The water flows in along the upper layer, but the water bodies of different temperatures in each layer are easy to mix after flowing into a larger water area, and it is difficult to form the expected vertical water temperature distribution.

[0004] In the experimental research on the water temperature stratification of reservoirs, in order to realize the stratification of water temperature along the water depth, water bodies of different temperatures are usually added, but in the process of adding water, the water bodies of different temperatures in each layer are easy to mix, and it is difficult to form the expected meeting requirements. The vertical water temperature distribution of

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