Underground water single-tube pulse stratified sampling device based on gas drive principle

A sampling device and groundwater technology, which is applied in the direction of sampling device, measuring device, sampling, etc., can solve the problem of increasing the number of monitoring layers, and achieve the effect of improving integration ability, small sampling disturbance, and good representativeness

Pending Publication Date: 2020-08-14
WUHAN CENT CHINA GEOLOGICAL SURVEY CENT SOUTH CHINA INNOVATION CENT FOR GEOSCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some technical difficulties to be overcome in the two groundwater U-tube layered sampling technologies based on the principle of gas drive and the groundwater pipe layered sampling technology. The integration capability needs to be further improved, and the number of monitoring layers needs to be further increased under the condition of the same borehole diameter

Method used

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  • Underground water single-tube pulse stratified sampling device based on gas drive principle
  • Underground water single-tube pulse stratified sampling device based on gas drive principle
  • Underground water single-tube pulse stratified sampling device based on gas drive principle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A groundwater single-pipe pulse layered sampling device based on the principle of gas drive, including

[0027] 1. Pulse booster pump; (mature product, purchased on the market);

[0028] 2. Relay device; (filled with inert gas for displacement sampling, such as nitrogen);

[0029] 3. Sampling bottle; (standard sampling bottle 50ml or 1L, purchased on the market);

[0030] 4a, the first diversion pipe; (1 / 8 stainless steel pipe, 1 / 8 polyurethane hose or 4mm air pressure hose, or 6mm air pressure hose, etc., purchased on the market);

[0031] 5.1a, the first tee; (PU start quick plug connector, purchased in the market);

[0032] 6.1a, the first check valve, 6.2a, the second check valve, 6.3a, the third check valve; (only one-way conduction, reverse closing, purchased in the market);

[0033] 7a. The first downhole gas drive mechanism;

[0034] 8a, the first pressure relief valve; (begin to release pressure after exceeding the set starting pressure value, purchased on ...

Embodiment 2

[0045] A groundwater single-pipe pulse layered sampling device based on the principle of gas drive suitable for geological exploration, such as figure 2 shown. include:

[0046] 1. Pulse booster pump; (mature product, purchased on the market);

[0047] 2. Relay device; (filled with inert gas for displacement sampling, such as nitrogen);

[0048] 3. Sampling bottle; (standard sampling bottle 50ml or 1L, purchased on the market);

[0049] 4a, the first diversion pipe, 4b, the second diversion pipe; (1 / 8 stainless steel pipe, 1 / 8 polyurethane hose or 4mm air pressure hose, or 6mm air pressure hose, etc., purchased on the market);

[0050] 5.1a, the first tee, 5.1b the second tee; (PU start quick plug connector, purchased in the market);

[0051] 6.1a, first check valve, 6.2a, second check valve, 6.3a, third check valve, 6.1b, fourth check valve, 6.2b, fifth check valve, 6.3b, sixth Non-return valve (only one-way conduction, reverse closing, purchased in the market);

[005...

Embodiment 3

[0068] Groundwater single-pipe pulse layered sampling device based on gas drive principle suitable for ecological environment monitoring, such as image 3 and Figure 4 shown. include:

[0069] 1. Pulse booster pump (mature product, purchased on the market);

[0070] 2. Relay device; (filled with inert gas for displacement sampling, such as nitrogen);

[0071] 3. Sampling bottle, 3a-the first sampling bottle; 3b-the second sampling bottle; 3c-the third sampling bottle; (standard sampling bottle 50ml or 1L, purchased on the market);

[0072] 4a, the first guide tube, 4b, the second guide tube, 4c, the third guide tube; (1 / 8 polyurethane hose or 4mm air pressure hose, or 6mm air pressure hose, etc., purchased on the market) ;

[0073] 5.1a, the first three-way, 5.1b, the second three-way, 5.1c, the third three-way, (PU pneumatic quick-plug connector, purchased in the market);

[0074] 6.1a, first check valve, 6.2a, second check valve, 6.3a, third check valve, 6.1b, fourth ...

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Abstract

The invention discloses an underground water single-tube pulse stratified sampling device based on a gas drive principle. A monitoring well is divided into a plurality of aquifers by packers. The stratified sampling device in each aquifer comprises a first flow guide pipe, a first tee joint, a first check valve, a second check valve, a third check valve, a first underground gas drive mechanism, afirst pressure release valve, a first pneumatic quick connector, a second pneumatic quick connector, a third pneumatic quick connector, a first underground flow storage container and a second filtering dialysis assembly. According to the invention, one-stop underground water sampling of different depths and different aquifers can be realized; high fidelity and representativeness of underground water samples in the sampling process are guaranteed through gas drive type work; two single-layer pipelines are reduced to one pipeline; the rated sampling layer number of the underground water stratified sampling device is doubled under the same condition; the integration capacity of an underground monitoring module is improved by reducing the number of the pipelines in a shaft and the occupied space; and therefore a physical space and a technical basis are provided for integrating the underground monitoring module.

Description

technical field [0001] The invention belongs to the technical field of hydrogeology, and in particular relates to a groundwater single-pipe pulse layered sampling device based on the principle of gas drive. Background technique [0002] Groundwater is a basic and important resource for natural ecosystems and human survival, and an important factor related to the evolution of the earth system and the survival of surface organisms. With the rapid economic development and increasing human activities, my country's groundwater environment is suffering from increasingly serious consumption and damage, such as excessive exploitation of groundwater resources (in the past ten years, the annual exploitation of groundwater in my country has continued to exceed 100 billion cubic meters), Pollution degradation etc. [0003] The exploration and protection of groundwater resources are inseparable from groundwater sampling technology. The serious consumption of groundwater resources has ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/14
CPCG01N1/14G01N2001/1031
Inventor 刘学浩陈征澳黄旋王安礼黄长生
Owner WUHAN CENT CHINA GEOLOGICAL SURVEY CENT SOUTH CHINA INNOVATION CENT FOR GEOSCIENCES
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