A device for measuring the fine profile of salt content in the bottom boundary layer of a water body in a tank

Abstract

The invention belongs to the technical field of geoscience and environmental science measuring technology, and relates to a device used for measuring water body bottom boundary layer salt fine sections in water tanks. The main structure of the device comprises a water tank, a fixing support, a locating assembly, an electrode fine adjustment assembly, an electrode clamp, and an electrode; the water tank contains a water sample to be measured; the fixing support comprises inner side vertical rods, outer side vertical rods, a horizontal rod, oblique beams, locating hole groups, and positioning bolts; the electrode fine adjustment assembly comprises a fine adjustment gear and a graduated scale; the lower end of the graduated scale is connected with the electrode used for measuring; the displacement accuracy of the electrode in the vertical direction is capable of achieving 1mm via using of the fine adjustment gear; monitoring points are arranged in the boundary layer vertical direction with intervals of 1mm; the electrode is used for monitoring the conductivity of each of the monitoring points so as to obtain enough data sample. The main structure is simple; design is skillful; installation and application are convenient; extremely high precision is achieved; and the device is friendly to the environment in applications.

Description

Technical field: [0001] The invention belongs to the technical field of geoscience and environmental science measurement equipment, and relates to a laboratory simulation measurement device, in particular to a device for measuring the fine profile of salt in the bottom boundary layer of a water tank. Background technique: [0002] The bottom boundary layer of water bodies often exists at the sediment-water interface of oceans, lakes and rivers, and refers to the water layer whose flow structure is obviously affected by the bottom boundary. The bottom boundary layer plays an important role in the ecology, chemistry, and geology of oceans, lakes, and rivers. It is the necessary place for the exchange of heat, solute, and particulate matter between sediments and overlying water; the solute concentration in the boundary layer The change is drastic, and the measurement of the salt micro-section of the bottom boundary layer of the water body can reveal the diffusion flux and migra...

AI Technical Summary

Problems solved by technology

The traditional measurement method is to set multiple sampling holes on the side wall of the tank, seal the sampling holes with rubber stoppers, and use a medical syringe to penetrate the rubber stoppers to extract boundary layer water samples. The minimum measurement distance can only reach 0.5cm. The disadvantage is that the process of taking water samples will affect the stability of the boundary layer, and the error of the measurement results is relatively large; in order to achieve accurate measurement of multi-point solute micro-sections in the boundary layer of the water body, it is necessary to invent a set of stable measurement of the salt content of the bottom boundary layer of the water body. The device for the fine profile, therefore relates to a device for measuring the fine profile of the salt in the boundary layer of the water body in the tank. The device realizes the fine adjustment of the electrode up and down through the meshing effect of the fine adjustment gear and the sawtooth, and can adjust the electrode at intervals of 1mm in the vertical direction of the boundary layer. One monitoring point is set, the measurement accuracy is high, the simulation error is small, and the multi-point stable measurement of the salinity of the boundary layer of the water body on the micro-section is realized

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