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Apparatus and method for groundwater sampling using hydraulic couplers

A technology for groundwater and pipe joints, applied in the direction of sampling devices, etc., can solve problems such as water quality changes, unsuitable for analysis, loss of volatile organic compounds, etc., and achieve economical and environmental effects

Inactive Publication Date: 2012-03-14
KOREA INST OF GEOSCI & MINERAL RESOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still problems such as changes in water quality, loss of volatile organic compounds due to contact with air
In particular, groundwater sampling by pumping is not suitable for profiling water quality at different depths in the borehole

Method used

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  • Apparatus and method for groundwater sampling using hydraulic couplers
  • Apparatus and method for groundwater sampling using hydraulic couplers
  • Apparatus and method for groundwater sampling using hydraulic couplers

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Embodiment Construction

[0044] It should be understood that the detailed structure and arrangement of elements shown in the drawings or described in the specification should not be construed as limiting the application of the present invention. The invention can be embodied in many alternative forms and can be carried out in different ways.

[0045] Terms or expressions used to describe the orientation of a device or element (for example, "front", "rear", "upper", "lower", "top", "bottom", "left", "right", and "side" etc.) are used to simplify the description of the present invention. Accordingly, it should be understood that these terms do not imply that the associated device or element must be in this particular orientation only. It should also be understood that, although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another, and are not intended to ...

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PUM

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Abstract

There are provided an apparatus and method for groundwater sampling, using a hydraulic coupler according to the present invention. In more particular, in the groundwater sampler which is positioned at multiple depths within a groundwater borehole to simultaneously take groundwater samples at the multiple depths, couplers are each connected to both ends of a water sampling pipe made of a metal pipe material. In case of positioning the sampler at a targeted depth, a socket and a plug forming each coupler are connected to each other, so that the both ends of the water sampling pipe-to lead groundwater to freely flow in / out. Thereafter, at the targeted depth, the sockets or plugs are permitted to be separated in the couplers at the both ends of the water sampling pipe by using a lift device, so that the both ends of the water sampling pipe are sealed to simultaneously taking groundwater samples at multiple depths.

Description

technical field [0001] This application relates to an apparatus and method for groundwater sampling using hydraulic couplers whereby groundwater sampling can be easily and simultaneously performed at multiple depths within a wellbore. Background technique [0002] Typically, groundwater sampling can be done with a water pump, or by lowering the sampler to a target depth within a single wellbore. Groundwater sampling methods using pumping can be divided into volume-based cleaning and sampling and low-flow cleaning and sampling based on the pumping rate. In the former there are problems such as disturbance of the groundwater in the wellbore due to pumping of large volumes of groundwater, exposure of the groundwater sample to air during sampling, and loss of volatile organic compounds. Among the latter, low flow cleaning and sampling methods, which enable the disturbance of the groundwater in the borehole due to pumping to be minimized and the amount of groundwater to be treat...

Claims

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Application Information

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IPC IPC(8): G01N1/10
CPCG01N1/12G01N1/16
Inventor 李奉柱高坰锡
Owner KOREA INST OF GEOSCI & MINERAL RESOURCES
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