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Device and calibration method of indoor OBS dynamic and continuous calibration suspended sediment concentration

A technology of suspended sediment concentration, OBS-3A, applied in the field of indoor OBS dynamic and continuous calibration of suspended sediment concentration

Inactive Publication Date: 2019-07-26
NANJING HYDRAULIC RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a device and calibration method for dynamically and continuously calibrating the concentration of suspended sediment in an indoor OBS, so as to solve the practical problems raised in the above-mentioned background technology

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  • Device and calibration method of indoor OBS dynamic and continuous calibration suspended sediment concentration
  • Device and calibration method of indoor OBS dynamic and continuous calibration suspended sediment concentration
  • Device and calibration method of indoor OBS dynamic and continuous calibration suspended sediment concentration

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Embodiment 2

[0039] As Embodiment 2 of the present invention, based on Embodiment 1, the device is improved. Example 1 is to calibrate the suspended sediment concentration for different layers of water samples in the observation point area, but the difference in the use of OBS instruments for a certain layer of water samples may cause errors. In this example, the water samples 80cm from the bottom in Example 1 Use three OBS-3A of the same model to conduct comparative experiments;

[0040] After the water sample 80cm away from the bottom is settled in a large volume, the upper layer of clear water is poured into the calibration tank, and the lower layer of sedimentation water sample is further precipitated to obtain sedimentation sand; three OBS-3A turbidimeters connected to the working computer are fixed on the OBS -3A turbidity meter support frame, immerse the probe in the water sample, do not touch the bottom, adjust the position of the water guide pipe at the calibration notch, so that ...

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Abstract

The invention discloses a device and a calibration method of the indoor OBS dynamic and continuous calibration suspended sediment concentration. The device comprises a sampling device and a suction filtration device, wherein the sampling device comprises a calibration groove, an OBS-3A turbidimeter supporting frame, an OBS-3A turbidimeter, a turbine, an aqueduct, a sampling bottle, and a samplingvacuum pump, the OBS-3A turbidimeter is vertically arranged above the calibration groove through the OBS-3A turbidimeter supporting frame, the turbine is arranged at the bottom of the calibration groove, one end of the aqueduct extends into the calibration groove, the other end of the aqueduct communicates with the interior of the sampling bottle, and the upper end of the sampling bottle is connected with the sampling vacuum pump. According to the device and the calibration method, the water sampling collection process close to an OBS probe is improved, the improved device can effectively improve the working efficiency, at the same time, the testing accuracy is improved, according to the device, after a high concentration suspended sand water body is added, sediment in the water body is ina stable suspended state due to the stirring action of the bottom turbine, and convenience is provided for reading OBS results and extracting water samples.

Description

technical field [0001] The invention belongs to the technical field of instrument calibration, and in particular relates to an indoor OBS device and calibration method for dynamically and continuously calibrating the concentration of suspended sand. Background technique [0002] The study of estuarine sedimentation dynamic process provides a very important basis for the evolution of marine landforms, the maintenance and transformation of ecosystems, the assessment of the impact of human activities on the environment, and the development of marine resources. Suspended sediment, as the main body of river sediment into the sea, has become one of the main contents of sediment dynamics research. At the same time, the measurement of water body sediment content is also a very important part of hydrological element observation. The measurement of suspended sediment concentration is very important for in-depth understanding of suspended sediment dynamics The deposition process is of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06
CPCG01N15/06G01N15/075
Inventor 李昶陆永军左利钦黄廷杰王志力陆彦莫思平刘怀湘李寿千朱明成
Owner NANJING HYDRAULIC RES INST
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