High-fidelity depthkeeping water sample acquisition device

Abstract

The invention relates to a high-fidelity depthkeeping water sample acquisition device. The device comprises a frame body, a lifting device, a sampling cylinder, a cover opening mechanism and a temperature detection device, wherein the frame body is used for being erected at a well mouth of a monitoring well; the lifting device is arranged on the frame body; the sampling cylinder comprises a cylinder body, a sampling bottle and a covering component, the sampling bottle is arranged in the cylinder body, antioxidant gas is filled in the sampling bottle, a water inlet communicating with the inside of the cylinder body is formed in the side wall of the cylinder body, the covering component is arranged in the cylinder body, and the lifting device is in transmission connection with the cylinderbody and used for driving the cylinder body to move up and down; the cover opening mechanism is arranged on the frame body, is in transmission connection with the covering component and is used for driving the covering component to move to open or block the water inlet and the bottle mouth of the sampling bottle; and the temperature detection device is arranged in the cylinder body. The high-fidelity depthkeeping water sample acquisition device has the advantages that structural design is reasonable, the sampling water is not contacted with air in the whole sampling process, the high fidelityof the water sample is ensured, so that the detection result is true and reliable, the temperature is measured in situ, and the measurement error is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of depth-fixed water sample collection and detection, and in particular relates to a high-fidelity fixed-depth water sample collection device. Background technique [0002] Due to the increasing scarcity of water resources, people pay more and more attention to the development of groundwater resources. However, the groundwater in some areas cannot be used due to serious pollution. Therefore, it is urgent to study the migration of pollutants in groundwater. is the key to research. At present, most of the groundwater samplers on the market are open-ended, which not only cannot accurately collect water samples at a certain depth, but also cause contact between water samples and oxygen during the sampling process, making indicators such as dissolved oxygen and redox potential difficult to measure during measurement. A large error will be generated, which will affect the accuracy of pollutant index determination...

AI Technical Summary

Problems solved by technology

At present, most of the groundwater samplers on the market are open-ended, which not only cannot accurately collect water samples at a certain depth, but also cause contact between water samples and oxygen during the sampling process, making indicators such as dissolved oxygen and redox potential difficult to measure during measurement. A large error will be generated, which will affect the accuracy of the determination of pollutant indicators

Moreover, when studying biological indicators in groundwater, temperature measurement at different water depths is particularly important, but at present, for the measurement of groundwater temperature, it is common practice to take water samples to the ground and then measure them. When the difference is large, this method will lead to a large temperature measurement error

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