A water temperature observation device and method for layered water intake by a stacked door of a reservoir

Abstract

The invention discloses a water temperature observation device and an observation method for stratified water intake by a stacked beam door of a reservoir, which belongs to the technical field of water conservancy and hydropower engineering, and comprises a water inlet which is provided with a trash rack, a stacked beam door and a water inlet for power generation The bell mouth section, the trash rack is located in front of the water inlet, the stop beam door is located in the water inlet, the power generation water inlet bell section is located on the downstream side of the water inlet, and the water temperature and water level in front of the dam is set on the upstream side of the water inlet Observation device, the downstream side is equipped with a tail water temperature observation device for power generation behind the dam. In this technical scheme, water is taken in layers by setting the stacking gate at the water inlet, and the surface water of the reservoir enters the water intake through the top of the stacking beam gate at the water inlet, and the opening height of the stacking beam gate is controlled according to the change of the water level of the reservoir, so as to ensure that water is drawn from the surface of the reservoir to generate electricity, avoiding the The lower water flows into the downstream, which has an adverse impact on the downstream ecological environment, realizing the independent water supply of the unit, and the operation is more flexible.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and relates to a monitoring technology of water temperature change law under the layered water intake mode of the stacked beam door in a high dam reservoir, in particular to a water temperature observation device and the observation device for the layered water intake of the stacked beam door in the reservoir method. Background technique [0002] At present, the high-dam reservoirs in my country's water conservancy and hydropower projects have gradually adopted the method of taking water from the surface layer of the reservoir to generate electricity or divert water by layered water intake through stacked gates, in order to slow down the release of low-temperature water from the original water inlet, resulting in a drop in the water temperature of the downstream river. Changes in the natural water temperature distribution of the original river channel have adve...

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Problems solved by technology

[0003] But so far, domestically, there has been little systematic research on the observation of water temperature cumulative effect of stratified water intake for water conservancy and hydropower projects, and there is a lack of relevant guidelines or specifications for the technical methods and requirements for the observation of water temperature cumulative effect of stacked gate stratified water intake The effective unification of the reservoir and the downstream overall water temperature change law observation results generally have systematic, representative, and unreliable problems. It is necessary to improve and optimize the design, construction, and operation scheduling of the layered water intake measures for follow-up projects. The reference significance of such work is not great, and the reference significance for improving the mathematical model research of river water temperature change law in our country, the improvement of empirical formula and the development of calculation software is even less.

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