A high-fidelity deep water sample collection device

Abstract

The invention relates to a high-fidelity fixed-depth water sample collection device, which includes a frame body, which is used to set up at the wellhead of a monitoring well; a lifting device, which is installed on the frame body; a sampling cylinder, which includes a cylinder body and a sampling bottle And the cover assembly, the sampling bottle is installed in the cylinder, which is filled with anti-oxidant gas, the side wall of the cylinder has a water inlet connected to the inside, the cover assembly is arranged in the cylinder, and the lifting device is connected with the cylinder for driving The cylinder body moves up and down; the uncapping mechanism is installed on the frame body and is connected with the cover assembly, which is used to drive the cover assembly to move to open or seal the water inlet and the mouth of the sampling bottle; the temperature detection device, the temperature The detection device is installed in the cylinder. Advantages: The structural design is reasonable, the sampling water does not come into contact with the air during the whole sampling process, which ensures the high fidelity of the water sample, makes the detection result true and reliable, and the temperature is measured in situ, which greatly reduces the measurement error.

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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