Portable deepwater layered electric water sampling device and water sampling method thereof

Abstract

The invention relates to a portable deepwater layered electric water sampling device. An extension device is arranged on a shore or a ship, a reel pipe device is arranged at one end of the extension device, and the other end of the extension device is fixedly connected with a fixed pulley. A water pipe and a bearing steel wire rope are wound on the left side and the right side of the reel pipe device respectively, the bearing steel wire rope bypasses the fixed pulley to be connected with a shell of a water inlet device, one end of the water pipe bypasses the fixed pulley to be connected with a water outlet of the water inlet device, and the other end of the water pipe is connected with a water collecting device. According to the water sampling device, the specific water depth is calculated through the water pressure, so that water sampling layering is more accurate; water sampling through a submersible pump is more labor-saving and not limited by the size of a water sampler; meanwhile, the water sampling width can be controlled, and the water sampling area can be adjusted according to needs; and finally, the offshore water sampling distance can be prolonged, and the water bank disturbance effect can be reduced.

Description

technical field [0001] The invention relates to a portable deep-water layered electric water collection device and a water collection method thereof, belonging to the technical field of water quality detection. Background technique [0002] The water quality characteristics of rivers and lakes (reservoirs) often show obvious vertical changes with the increase of water depth. Layered sampling and water quality testing and evaluation of the surface, upper, middle and lower layers of water bodies are the key to the evaluation and evaluation of water environment quality in rivers and lakes (reservoirs). An important part of water body governance and restoration. When sampling water bodies in rivers and lakes (reservoirs), the common sampling methods are bottle-type water collector sampling and vacuum pump water sampling. The bottle-type water sampler sampling method is to estimate the sampling depth by lowering the sampling bottle with a rope and observing the rope mark at the ...

AI Technical Summary

Problems solved by technology

However, because the marks on the rope are easy to wear and the distribution of the rope in the water may not be a vertical line, there is a large deviation between the measured depth and the actual depth, which affects the water quality test results

If sampling is carried out next to the wall of a dam with a slope, the scale of the rope will be greater than the real depth, which cannot reflect the real water quality stratification of the water body

At the same time, the volume of water collected by the bottle-type water collector is limited, and water samples of different water depths may be mixed during the collection process, the controllable distance is short, and the manpower consumption in the sampling process is large.

However, the water sampling by the vacuum pump is limited by the air pressure. When the water depth exceeds 10 meters, the water sample cannot be collected normally because the vacuum pump reaches the atmospheric pressure.

There are also large-scale mechanical water collection devices and crane labor-saving water collection devices. The former is mostly used for marine sampling. It is expensive, complex in structure, poor in portability, and has very high hardware requirements. It is not suitable for water sampling in rivers and lakes (reservoirs). The speed is slow and the efficiency is low, which will cause the water temperature to be different from that in the original position

[0003] In addition, at present, most of the water samples collected in rivers and lakes (reservoirs) are collected in meters, and the existing water collectors cover a thinner water layer in the vertical direction, and the vertical representativeness of the water depth is not enough. Therefore, a better sampling method is needed. water installation

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