Hydrogeological geological survey sampling device

Abstract

The utility model provides a kind of hydraulic engineering geological survey sampling device, it is related to hydrogeological engineering survey technical field, including cylinder, by coaxial setting upper sampling cavity, middle sampling cavity and lower sampling cavity constitute three-dimensional sampling space;Negative pressure source, it is communicated to each sampling cavity, directional negative pressure is formed when sampling.The utility model can realize high-precision stratified sampling without cross-contamination, by orthogonal distribution upper, middle and lower water inlet channel, make the water body of different depth in geological survey stationary surface water along independent path into corresponding sampling cavity, completely avoid interlayer mixing from physical structure, ensure stratified data authenticity;The utility model can optimize fluid flow, guarantee sample integrity and representativeness, the horn-shaped water inlet of anti-turbulence cover reduces flow velocity, combined with spiral guide flow channel, convert turbulent flow into stable laminar flow, reduce bubble disturbance and particulate matter settlement, significantly improve the originality of sample, meet high-precision water quality analysis demand.

Description

Technical Field

[0001] This utility model relates to the field of hydrogeological engineering exploration technology, and in particular to a hydrogeological and environmental geological exploration sampling device. Background Technology

[0002] A hydrogeological sampling device is a specialized instrument used for sampling in hydrogeological exploration. This device helps geological surveyors safely and accurately collect water samples in complex underwater or terrestrial environments for subsequent analysis and research.

[0003] The sampling tubes of the existing technology adopt a vertical series structure, which makes it easy for water samples from different depths to mix during transportation. This leads to distortion of chemical indicators (such as dissolved oxygen and heavy metal concentration) and biological indicators (such as planktonic communities), which seriously affects the accuracy of water quality profile analysis. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a hydrogeological and environmental geological exploration sampling device, which solves the technical problem of low accuracy in water quality profile analysis.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a hydrogeological exploration and sampling device, comprising:

[0006] The cylindrical body consists of an upper sampling chamber, a middle sampling chamber, and a lower sampling chamber arranged coaxially to form a three-dimensional sampling space;

[0007] A negative pressure source, which is connected to each sampling chamber, creates a directional negative pressure during sampling;

[0008] Multi-channel water inlet section, including:

[0009] The upper sampling tube is set along the axial direction of the cylinder to form a vertical water inlet channel that connects from top to bottom to the upper sampling chamber;

[0010] The central sampling tube is arranged radially along the cylinder to form a transverse water inlet channel that connects horizontally to the central sampling chamber;

[0011] The lower sampling tube is set along the axial direction of the cylinder to form a reverse water inlet channel that connects from bottom to top to the lower sampling chamber;

[0012] The water inlet paths of the multi-channel water inlet are orthogonally distributed in space, forming a water sampling pattern without cross-disturbance.

[0013] Preferably, the inlet ends of the upper sampling tube, middle sampling tube, and lower sampling tube extend to the upper, middle, and lower parts of the target water layer, respectively, and an isolation structure is provided between the inlet ends of each sampling tube to form independent water flow channels.

[0014] Preferably, the isolation structure includes a flow-protecting shield disposed at the water inlet end of each sampling tube, the flow-protecting shield having a funnel-shaped expansion structure.

[0015] Preferably, the flow channels inside the upper sampling tube, middle sampling tube, and lower sampling tube have a spiral structure.

[0016] Preferably, the volume ratio of the upper sampling chamber, the middle sampling chamber, and the lower sampling chamber is 1:1.2-1.5:1.

[0017] By employing the above technical solution, this utility model provides a hydrogeological exploration and sampling device, which has at least the following beneficial effects:

[0018] 1. This utility model can achieve high-precision stratified sampling without cross-contamination. Through orthogonally distributed upper, middle and lower water inlet channels, water bodies of different depths in the static surface water of geological exploration enter the corresponding sampling chambers along independent paths, which completely avoids interlayer mixing from the physical structure and ensures the authenticity of stratified data.

[0019] 2. This utility model can optimize fluid flow, ensure sample integrity and representativeness. The funnel-shaped inlet of the anti-turbulence hood reduces the flow velocity, and combined with the spiral guide channel, it transforms turbulence into stable laminar flow, reduces bubble disturbance and particulate matter sedimentation, significantly improves the originality of the sample, and meets the needs of high-precision water quality analysis. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a partial cross-sectional view of the present invention.

[0023] Figure 3 This is a diagram showing the water sampling flow direction of this utility model.

[0024] In the diagram: 1. Cylinder; 2. Negative pressure source; 3. Multi-channel water inlet; 31. Upper sampling tube; 32. Middle sampling tube; 33. Lower sampling tube; 4. Anti-turbulence shroud. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please refer to Figures 1-3 This embodiment proposes a hydrogeological exploration and sampling device, comprising:

[0027] The cylinder 1 is a three-dimensional sampling space composed of an upper sampling chamber, a middle sampling chamber and a lower sampling chamber arranged coaxially. The volume ratio of the upper sampling chamber, the middle sampling chamber and the lower sampling chamber is 1:1.2-1.5:1. The middle sampling chamber is enlarged to match the higher flow velocity of the middle water body, so as to avoid backflow or sample overflow caused by chamber overload.

[0028] Negative pressure source 2 is connected to each sampling chamber and forms a directional negative pressure during sampling;

[0029] Multi-channel water inlet 3 includes:

[0030] The upper sampling tube 31 is arranged along the axial direction of the cylinder 1 to form a vertical water inlet channel that connects from top to bottom to the upper sampling chamber;

[0031] The central sampling tube 32 is arranged radially along the cylinder 1 to form a transverse water inlet channel that is horizontally connected to the central sampling chamber;

[0032] The lower sampling tube 33 is arranged along the axial direction of the cylinder 1 to form a reverse water inlet channel that connects from bottom to top to the lower sampling chamber;

[0033] The water intake paths of the multi-channel water intake section 3 are orthogonally distributed in space, forming a water sampling mode without cross-disturbance.

[0034] The cylinder 1 is placed into the water body, and the negative pressure source 2 is started. The main body of the negative pressure source 2 is a negative pressure generating device such as an air pump, which is not shown in the figure. The air pump's suction end is connected to each sampling chamber through multiple pipes. During sampling, a directional negative pressure is formed, which causes the pistons that are slidably sleeved in each sampling chamber to move, thereby achieving sampling of water bodies at different depths. The sampled water bodies form an inlet path through the multi-channel water inlet 3, which is orthogonally distributed in space.

[0035] like Figures 2-3 As shown, the sampling space for orthogonally distributed influent is based on the following:

[0036] Vertical water inlet channel (upper sampling tube 31): Establishes a vertical gradient sampling path for water along the negative Z-axis;

[0037] Lateral water inlet channel (middle sampling tube 32): Establish a radial sampling path for the middle water layer along the horizontal direction of the X / Y axis;

[0038] Reverse water inlet channel (lower sampling tube 33): Establish a reverse sampling path for bottom water along the positive Z-axis direction;

[0039] The spatial angles of the three channels are strictly maintained at 90° orthogonal, ensuring that the axial projections of each channel have no overlapping points in three-dimensional space, fundamentally avoiding streamline intersections. The coaxial design of cylinder 1 ensures that the fluid domains of each sampling chamber are isolated from each other, and the orthogonal layout makes the flow field influence range of each channel spatially orthogonal, minimizing fluid interference.

[0040] The inlet ends of the upper sampling tube 31, the middle sampling tube 32, and the lower sampling tube 33 extend to the upper, middle, and lower parts of the target water layer, respectively, and an isolation structure is provided between the inlet ends of each sampling tube to form independent water flow channels. The isolation structure includes a flow-damping shield 4 installed at the inlet end of each sampling tube, and the flow-damping shield 4 has a funnel-shaped expansion structure.

[0041] The anti-turbulence shroud 4 is designed with an extended flared opening. This extended opening reduces the inlet water velocity, preventing high-speed water flow from impacting the flow and converting turbulence into laminar flow, thus reducing the disturbance of air bubbles and particles. The flared opening also expands the sampling area, avoiding the "channel effect" of traditional narrow-mouth pipes (which only collects water from the center). This results in lower water velocity, reducing the settling loss of suspended particles (such as silt and plankton), thereby improving sampling accuracy.

[0042] The flow channels inside the upper sampling tube 31, the middle sampling tube 32, and the lower sampling tube 33 have a spiral structure, which is not shown in the figure.

[0043] Swirling flow can suppress radial turbulence and maintain streamline stability. The centrifugal force of the spiral ensures that heavy metal particles, microorganisms, etc., are uniformly suspended, preventing adsorption to the tube wall. At the same time, the gradually varying pitch of the spiral channel (1.2-1.8 times the tube diameter) reduces fluid shear, lowers the rate of microbial cell damage, and the spiral path prolongs the water flow time, promoting the slow release of dissolved gases and avoiding bubble interference caused by sudden decompression, thereby protecting the integrity of the sample.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sampling device for hydrogeological and environmental exploration, characterized in that, include: The cylinder (1) is composed of an upper sampling cavity, a middle sampling cavity and a lower sampling cavity arranged coaxially to form a three-dimensional sampling space; The negative pressure source (2) is connected to each sampling chamber and forms a directional negative pressure during sampling; The multi-channel water inlet (3) includes: The upper sampling tube (31) is arranged along the axial direction of the cylinder (1) to form a vertical water inlet channel that connects from top to bottom to the upper sampling chamber (11); The central sampling tube (32) is arranged radially along the cylinder (1) to form a transverse water inlet channel that is horizontally connected to the central sampling chamber (12); The lower sampling tube (33) is arranged along the axial direction of the cylinder (1) to form a reverse water inlet channel that connects from bottom to top to the lower sampling chamber (13); The water inlet paths of the multi-channel water inlet (3) are orthogonally distributed in space, forming a water sampling mode without cross-disturbance.

2. The hydrogeological and environmental geological exploration sampling device according to claim 1, characterized in that, The inlet ends of the upper sampling tube (31), middle sampling tube (32) and lower sampling tube (33) extend to the upper, middle and lower parts of the target water layer, respectively, and an isolation structure is provided between the inlet ends of each sampling tube to form independent water flow channels.

3. The hydrogeological and environmental geological exploration sampling device according to claim 2, characterized in that, The isolation structure includes a flow shield (4) installed at the water inlet of each sampling tube, and the flow shield (4) has a horn-shaped expansion structure.

4. The hydrogeological and environmental geological exploration sampling device according to claim 1, characterized in that, The inner flow channels of the upper sampling tube (31), middle sampling tube (32) and lower sampling tube (33) are spiral structures.

5. The hydrogeological and environmental geological exploration sampling device according to claim 1, characterized in that, The volume ratio of the upper sampling chamber (11), the middle sampling chamber (12) and the lower sampling chamber (13) is 1:1.2-1.5:1.

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