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An experimental device and method for testing the temperature of water discharged from a reservoir

An experimental method and water temperature technology, applied in hydraulic models and other directions, can solve problems such as the inability to monitor the average value of water temperature in the discharge, and achieve the effect of solving the problem of layered monitoring errors and ensuring accuracy.

Inactive Publication Date: 2018-03-23
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the experimental monitoring position is set in the middle of the downstream draft tube, only the water temperature of a certain layer can be monitored, and the average value of the discharge water temperature cannot be monitored

Method used

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  • An experimental device and method for testing the temperature of water discharged from a reservoir
  • An experimental device and method for testing the temperature of water discharged from a reservoir
  • An experimental device and method for testing the temperature of water discharged from a reservoir

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Experimental program
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Effect test

Embodiment 1

[0034] This embodiment is an experimental device for testing the temperature of water discharged from a reservoir, such as figure 1 , 2 shown. This embodiment includes: a tailwater mixing tank 2 provided with an outlet 1 of a draft tube, the tailwater mixing tank is connected with a constricted flow stabilization tank 3 , and the flow stabilization tank is connected with a sump 4 . The downstream of the outlet of the draft tube is provided with a mixing facility 5 for generating communication between the upper and lower layers of the water, and a water temperature sensor 6 is provided in the water collection tank, and the water temperature sensor is electrically connected with a water temperature data collector 7 .

[0035] The basic principle of this embodiment is to strengthen the turbulence of the water in the tail water mixing tank through the mixing facilities, and destroy the temperature stratification of the discharged water, so as to accurately test the average water ...

Embodiment 2

[0040] This embodiment is an improvement of the first embodiment, which is the refinement of the tail water mixing tank in the first embodiment. The aspect ratio of the tail water mixing tank described in this embodiment is 2:1.

[0041] The length and width of the tail water mixing tank described in this embodiment, the said length is the length along the water flow direction, and the said width is the width of the pool perpendicular to the water flow direction.

Embodiment 3

[0043] This embodiment is an improvement of the above embodiment, and it is a refinement of the above embodiment about the blending facility. The mixing facility described in this embodiment is located in the upper, middle and lower reaches of the tail water mixing tank, and consists of at least three retaining walls, such as image 3 shown.

[0044]The mixing facility described in this embodiment is composed of more than three retaining walls arranged in a staggered manner. The retaining walls can be arranged up and down, or left and right, or up and down, left and right, so that the water body in the mixing pool will roll up and down / left and right, and the water temperature distribution in the pool will be weakened. The form of the retaining wall can be right-angled or triangular.

[0045] In order to further strengthen the turbulent effect of the water flow in the mixing pool and make the water flow more fully mixed, in this embodiment, pebbles are evenly distributed on a...

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Abstract

The invention relates to an experimental device and a method for testing a discharged water temperature of a reservoir. The experimental device comprises a tail water mixing tank with a tail water tube outlet, wherein the tail water mixing tank is connected to a necking steady-flow tank which is connected to a water collecting tank; a mixing facility for enabling a water upper layer and a water lower layer to generate interflow is arranged at the downstream of the tail water tube outlet; a water temperature monitor is arranged in the water collecting tank; and the water temperature monitor is electrically connected with a water temperature data acquirer. According to the experimental device, the mixing facility is arranged in the tail water mixing tank, so that the discharged water flow can be mixed very well, and therefore, layered monitoring errors of the discharged water temperature are effectively solved. Besides, a multi-point type water temperature monitoring system is arranged in the water collecting tank, so that the water temperature condition of each layer in the water collecting tank is monitored in real time; and meanwhile, at a discharged water temperature testing area, discharged water temperature evaporative heat loss is reduced through a transparent heat insulating cover, so that the accuracy of acquired experimental data is guaranteed.

Description

technical field [0001] The invention relates to an experimental device and method for testing the temperature of water discharged from a reservoir, a hydraulic experimental device and method, and a device and method for simulating an ecological hydraulic environment. Background technique [0002] As an energy storage system that can store a large amount of water resources and store energy that can be converted into electricity at any time, a reservoir is an irreplaceable and effective means for humans to store water resources and energy on a large scale. Compared with other resource storage systems, the reservoir has the least environmental pollution and damage to the ecological environment. However, with the understanding of the environment and the concern for the ecological environment, many ecological problems of reservoirs that were neglected in the past have been discovered. These ecological problems not only appear in the reservoir itself, but also in the upstream or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B1/02
CPCE02B1/02
Inventor 郑铁刚路振刚孙双科柳海涛姜涵李广宁刘志国
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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