A real-time monitoring device for salt tide

Abstract

The invention provides a salty tide real-time monitoring device including a pile shaft, a buoyancy tank, electrode rods and a data processor; the pile shaft is sleeved with a sleeve; the buoyancy tank includes two symmetrical arch-shaped hollow shell bodies, and two hollow shell bodes are fixedly connected with the sleeve; the buoyancy tank can move along the pile shaft together with the sleeve; the electrode rods are mounted on the buoyancy tank and are connected with the data processor through wires; the pile shaft is vertically fixed in water. The electrode rods are adopted for monitoring the electric conductivity of the water, then the salinity of the water is obtained, and through conversion of the salinity and the chlorinity, the chlorine degree is obtained finally and whether backward flowing of the salty tide occurs is judged; a mechanism is clear, monitoring is convenient, the effect of real-time monitoring can be achieved, and backward flowing of the salty tide is effectively prevented.

Description

technical field [0001] The invention relates to the field of water conservancy, in particular to a salt tide real-time monitoring device. Background technique [0002] my country has a long coastline and many estuaries, and most of the inland rivers need water diversion. For example, there are more than 30 diversion sluices at the mouth of the Yangtze River in Shanghai, and it is necessary to avoid salt water and introduce fresh water when diverting water. [0003] During water diversion, because of the tide, it is easy to have the problem of saline tide backflow during water diversion, resulting in the mixture of salty and fresh water causing the river water to become salty. At present, the chloride content in the water during water diversion is an important indicator for judging whether salt tide backflow occurs. Chloride mainly comes from seawater. Once the chloride content exceeds the standard, it means that seawater has been introduced. The water diversion at the est...

AI Technical Summary

Problems solved by technology

[0004] 1. It takes a certain amount of time from taking water samples to measuring and obtaining results, which is likely to cause short-term backflow of salty tide during the test, and the chlorine level test is relatively cumbersome, which will cause artificially less or missed tests in the practice process, and finally lead to The hidden danger of salt tide backwashing cannot be fundamentally eliminated; in addition, the silver nitrate titration method needs to invest a lot of costs for laboratory reagents and laboratory equipment, and will pollute the environment

[0005] 2. Due to the law of the tide itself and the influence of dark sand in the river, the tide height, flow velocity, and flow direction of each tide are unpredictable, and when the high tide lasts for a long time, the chloride content in the tide in different periods of the same high tide process The changes are also very large. Therefore, it often happens that the water samples taken are fresh water and the imported water is actually salt water. The reason is that the data obtained is not comprehensive enough to monitor in real time.

[0006] 3. The workload of the staff is heavy, and the quality of monitoring is difficult to guarantee; when encountering strong winds and high tides, the lives of staff are still in danger; in case of emergencies or when water needs to be diverted at night, real-time monitoring is even more inconvenient

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