Multi-channel well water body collection device and groundwater detection system

Abstract

The present invention provides a multi-channel well water body collection device and a groundwater detection system, which relate to the technical field of geological environment detection. The multi-channel well water body collection device includes a well pipe body, a sealing component, and a detection component; a partition plate is arranged inside the well pipe body along its length direction, and the partition plate divides the interior of the well pipe body into a detection cavity and a sampling cavity, and multiple detection cavities can all communicate with the sampling cavity; a plurality of magnetically controlled solenoid valves adapted to the sealing component are arranged on the side wall of the sampling cavity; the detection component includes a traction cable, a sampling unit, and a liquid level sensor, the sampling unit and the liquid level sensor are both arranged on the traction cable, and the sealing component is arranged at the bottom of the traction cable. The groundwater detection system includes the multi-channel well water body collection device. The technical effect that can be detected in a narrow pipe diameter is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of geological environment detection, and more particularly, to a multi-channel well water body collection device and a groundwater detection system. Background Art

[0002] As 30% of the world's fresh water resources, groundwater undertakes important functions such as drinking, agricultural irrigation, and industrial water use. However, human activities such as industrial wastewater discharge, agricultural fertilizer infiltration, and urban landfill have led to the exceeding of heavy metals (such as arsenic and cadmium), nitrates, organic pollutants, etc., threatening the safety of drinking water. Currently, the water quality at groundwater detection points is poor or extremely poor, and there is an urgent need for precise detection means.

[0003] The groundwater system has a layered structure of perched water, phreatic water, and confined water. The water quality of different layers is significantly affected by recharge sources and pollutant migration paths. For example, confined water is more likely to accumulate heavy metals due to its sealing property, while the phreatic aquifer is easily polluted by surface runoff.

[0004] The prior art can only achieve stratified sampling and water level measurement of groundwater in large-diameter single-hole detection wells. However, the use of the drilling stratified isolation technology for water level measurement and sampling can only be applied to single-hole wells. Since the packer needs to be placed along the drill pipe, it is not applicable to small-diameter detection wells. Moreover, when isolating between multiple aquifers, a drilling rig is required to fix the packer on the drill pipe, and the staff operates the drilling rig to lower the drill pipe to the target position in the detection well. The drill pipe is heavy, not easy to carry, difficult to transport, and the operation requires a professional drilling rig. The whole process is cumbersome, resulting in a large amount of field work and complex work. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-channel well water body collection device and a groundwater detection system to alleviate the technical problem that small-diameter pipes cannot be detected in the prior art.

[0006] In a first aspect, an embodiment of the present invention provides a multi-channel well water body collection device, including a well pipe body, a plugging component, and a detection component;

[0007] A partition plate is arranged inside the well pipe body along its length direction, and the partition plate divides the inside of the well pipe body into a detection chamber and a sampling chamber, and a plurality of the detection chambers can communicate with the sampling chamber;

[0008] A plurality of magnetically controlled solenoid valves adapted to the plugging component are arranged on the side wall of the sampling chamber;

[0009] The detection component includes a traction cable, a sampling unit, and a liquid level sensor. The sampling unit and the liquid level sensor are both arranged on the traction cable, and the plugging component is arranged at the bottom of the traction cable.

[0010] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the above-mentioned traction cable includes a steel wire rope, a data cable, and a suction pipeline;

[0011] Both the sampling unit and the liquid level sensor are installed on the steel wire rope;

[0012] The data cable is connected to the sampling unit and the liquid level sensor, and the sampling unit is connected to the suction pipeline;

[0013] The plugging assembly is arranged at the bottom of the steel wire rope.

[0014] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the above-mentioned plugging assembly includes a shielding carrier chamber, a first driving airbag, a second driving airbag, a magnet, and a shielding partition;

[0015] The shielding carrier chamber is fixedly arranged at the bottom of the steel wire rope;

[0016] The first driving airbag is arranged in the shielding carrier chamber, the magnet is placed on the first driving airbag, the shielding partition is placed on the magnet, a through window is opened in the upper part of the shielding carrier chamber, and the first driving airbag can lift the magnet from the bottom of the shielding carrier chamber to the through window so that the magnet can trigger the magnetically controlled solenoid valve;

[0017] The second driving airbag is fixedly sleeved at the bottom of the shielding carrier chamber.

[0018] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the above-mentioned traction cable further includes an inflation pipeline, and the first driving airbag and the second driving airbag are respectively connected to the inflation pipeline.

[0019] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the above-mentioned shielding carrier chamber is made of carbon steel or iron-nickel alloy material.

[0020] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the above-mentioned shielding partition is made of carbon steel or iron-nickel alloy material.

[0021] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the above-mentioned multiple magnetically controlled solenoid valves are arranged circumferentially along the sampling cavity so that each magnetically controlled solenoid valve can independently control different detection cavities.

[0022] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the heights of the plurality of magnetically controlled solenoid valves gradually decrease, so that the plurality of detection chambers can correspond to different water layers.

[0023] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a power supply line for powering the magnetically controlled solenoid valve is embedded in the inner wall of the well pipe body.

[0024] In a second aspect, an embodiment of the present invention provides a groundwater detection system, including the multi-channel well water body collection device.

[0025] Beneficial effects:

[0026] An embodiment of the present invention provides a multi-channel well water body collection device, including a well pipe body, a sealing component and a detection component; a partition plate is arranged inside the well pipe body along its length direction, and the partition plate divides the inside of the well pipe body into a detection chamber and a sampling chamber, and a plurality of detection chambers can all communicate with the sampling chamber; a plurality of magnetically controlled solenoid valves for adapting to the sealing component are arranged on the side wall of the sampling chamber; the detection component includes a traction cable, a sampling unit and a liquid level sensor, the sampling unit and the liquid level sensor are both arranged on the traction cable, and the sealing component is arranged at the bottom of the traction cable.

[0027] Specifically, during use, the staff inserts the well pipe body into the well, then puts the sealing component and the detection component into the sampling chamber by using the traction cable, and then detects whether there is water in the sampling chamber through the liquid level sensor. If there is water, the sampling chamber is evacuated through the sampling unit, and then the position of the sealing component is adjusted so that the sealing component can cooperate with the magnetically controlled solenoid valve on the side wall of the sampling chamber to communicate a single detection chamber with the sampling chamber, and at the same time, the sampling chamber is sealed by using the sealing component. After the liquid in a single detection chamber flows into the sampling chamber, the staff can use the sampling unit to extract the groundwater to be detected, and this groundwater is the groundwater of the set formation. Then the sealing component can leave and close the magnetically controlled solenoid valve again. By analogy, it is convenient to detect the groundwater of different formations.

[0028] An embodiment of the present invention provides a groundwater detection system, including a multi-channel well water body collection device. The groundwater detection system has the above advantages compared with the prior art, which will not be elaborated here. Description of the drawings

[0029] In order to more clearly illustrate the specific implementation manners of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific implementation manners or the prior art. Obviously, the following drawings are some implementation manners of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0030] Figure 1 Schematic structural diagram of the plugging component and the detection component in the multi-channel well water body collection device provided by the embodiment of the present invention;

[0031] Figure 2 Cross-sectional schematic diagram of the well pipe body in the multi-channel well water body collection device provided by the embodiment of the present invention;

[0032] Figure 3 Schematic diagram when the multi-channel well water body collection device provided by the embodiment of the present invention is in use (when the magnet does not trigger the magnetically controlled solenoid valve);

[0033] Figure 4 Schematic diagram when the multi-channel well water body collection device provided by the embodiment of the present invention is in use (when the magnet triggers the magnetically controlled solenoid valve).

[0034] Icon:

[0035] 100 - Well pipe body; 101 - Partition board; 110 - Detection cavity; 120 - Sampling cavity; 130 - Magnetically controlled solenoid valve;

[0036] 200 - Plugging component; 210 - Shielding carrier bin; 211 - Transparent window; 220 - First driving airbag; 230 - Second driving airbag; 240 - Magnet; 250 - Shielding partition board;

[0037] 300 - Detection component; 310 - Traction cable; 320 - Sampling unit; 330 - Liquid level sensor. Detailed implementation manners

[0038] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0040] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0041] In the present invention, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0043] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown in

[0044] Specifically, during use, the staff inserts the well pipe body 100 into the well pipe, and then puts the plugging assembly 200 and the detection assembly 300 into the sampling chamber 120 by using the traction cable 310. Then, the liquid level sensor 330 is used to detect whether there is water in the sampling chamber 120. If there is water, the sampling unit 320 evacuates the sampling chamber 120. Then, the position of the plugging assembly 200 is adjusted so that the plugging assembly 200 can cooperate with the magnetically controlled solenoid valve 130 on the side wall of the sampling chamber 120 to connect a single detection chamber 110 with the sampling chamber 120. At the same time, the sampling chamber 120 is plugged by the plugging assembly 200. After the liquid in a single detection chamber 110 flows into the sampling chamber 120, the staff can use the sampling unit 320 to extract the groundwater to be tested, and this groundwater is the groundwater of the set formation. Then, the plugging assembly 200 moves away and can close the magnetically controlled solenoid valve 130 again. By analogy, it is convenient to detect the groundwater of different formations.

[0045] Among them, a plurality of magnetically controlled solenoid valves 130 are arranged along the circumferential direction of the sampling chamber 120 so that each magnetically controlled solenoid valve 130 can independently control different detection chambers 110.

[0046] Among them, the heights of the plurality of magnetically controlled solenoid valves 130 gradually decrease so that the plurality of detection chambers 110 can correspond to different water layers.

[0047] Among them, a power supply line for supplying power to the magnetically controlled solenoid valve 130 is buried in the inner wall of the well pipe body 100.

[0048] Among them, the liquid level sensor 330 can measure the pressure of the groundwater in the well pipe, and an absolute pressure type pressure sensor is used. During use, the liquid level sensor 330 first measures a pressure in the atmospheric environment without being put into water, that is, the atmospheric pressure, as the basic pressure value. After measuring the water pressure, the basic pressure value is subtracted to eliminate the influence of the atmospheric pressure by atmospheric pressure compensation. Then, the buried depth value of the groundwater level is calculated according to the length of the cable lowered.

[0049] It should be noted that a plurality of detection chambers 110 are arranged around the outside of the sampling chamber 120.

[0050] Among them, the traction cable is provided with scales to facilitate the staff to know the depth below the plugging assembly 200 and the detection assembly 300.

[0051] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown in the figure, in an alternative solution of this embodiment, the towing cable 310 includes a steel wire rope, a data cable, and a suction pipeline; the sampling unit 320 and the liquid level sensor 330 are both installed on the steel wire rope; data cables are connected to the sampling unit 320 and the liquid level sensor 330, and the sampling unit 320 is connected to the suction pipeline; the plugging assembly 200 is arranged at the bottom of the steel wire rope.

[0052] Specifically, the sampling unit 320 can extract groundwater. The suction pipeline on the towing cable 310 is connected to the sampling unit 320, and the groundwater can be extracted and collected.

[0053] Among them, multiple data cables can be arranged on the steel wire rope, which can control the operation of the sampling unit 320 and upload the signals measured by the liquid level sensor 330.

[0054] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown in the figure, in an alternative solution of this embodiment, the plugging assembly 200 includes a shielding carrier bin 210, a first driving airbag 220, a second driving airbag 230, a magnet 240, and a shielding partition 250; the shielding carrier bin 210 is fixedly arranged at the bottom of the steel wire rope; the first driving airbag 220 is arranged in the shielding carrier bin 210, the magnet 240 is placed on the first driving airbag 220, the shielding partition 250 is placed on the magnet 240, a through window 211 is opened in the upper part of the shielding carrier bin 210, and the first driving airbag 220 can lift the magnet 240 from the bottom of the shielding carrier bin 210 to the through window 211 so that the magnet 240 can trigger the magnetically controlled solenoid valve 130; the second driving airbag 230 is fixedly sleeved at the bottom of the shielding carrier bin 210.

[0055] Among them, the shielding carrier bin 210 and the shielding partition 250 can shield the magnet 240, and only when the magnet 240 is lifted to the through window 211 under the action of the first driving airbag 220 can the magnetically controlled solenoid valve 130 be triggered.

[0056] Among them, the towing cable 310 further includes an air charging pipeline, and the first driving airbag 220 and the second driving airbag 230 are respectively connected to the air charging pipeline.

[0057] Specifically, when conducting the detection work, first place the plugging component 200 and the detection component 300 at the wellhead position of the middle sampling chamber 120. The liquid level sensor 330 measures the current atmospheric pressure and saves it. Then lower the plugging component 200 and the detection component 300. In order to have remaining water in the sampling chamber 120, lower the plugging component 200 and the detection component 300 to a lower position. Through the liquid level sensor 330, it can be sensed whether there is water in the well pipe. If there is water, the sampling unit 320 will be used to pump out the water to keep the well pipe in a waterless state. If there is no water, adjust the positions of the plugging component 200 and the detection component 300 in the sampling chamber 120. Given the height at which each magnetic switch is set on the well pipe body 100, and then according to the scale on the traction cable 310, lower the second driving airbag 230 below the magnetically controlled solenoid valve 130 at the designated position. When the second driving airbag 230 reaches the target position, inflate the first driving airbag 220 and the second driving airbag 230 through the air charging pipeline in the traction cable 310. When the first driving airbag 220 inflates and expands, the first driving airbag 220 can drive the magnet 240 on it to move up to the transparent window 211, so that the magnet 240 can trigger the designated magnetically controlled solenoid valve 130 to work. When the second driving airbag 230 inflates and expands, the second driving airbag 230 can closely fit with the inner wall of the sampling chamber 120, thus separating the sampling chamber 120 into upper and lower spaces, preventing the water body in the sampling chamber 120 above the second driving airbag 230 from flowing downward, so as to ensure that the groundwater in the designated detection chamber 110 will not flow downward after flowing into the sampling chamber 120, so that the sampling unit 320 can collect the groundwater. When the groundwater in the designated detection chamber 110 flows into the sampling chamber 120, the real-time measurement value of the liquid level sensor 330 will continuously rise. Wait until the real-time measurement value of the liquid level sensor 330 is stable, that is, the water levels in the designated detection chamber 110 and the sampling chamber 120 are the same, and record the data at this time. Through the water pressure value of the liquid level sensor 330, the known atmospheric pressure and the cable lowering length, the water level burial depth value can be calculated, so that the staff can know the water layer corresponding to the groundwater collected this time. After the sampling and water level measurement work is completed, exhaust the first driving airbag 220 and the second driving airbag 230 through the air charging pipeline. The first driving airbag 220 and the second driving airbag 230 return to the contracted state. The contraction of the first driving airbag 220 causes the magnet 240 to descend and be shielded by the shielding carrier 210 and the shielding partition 250, so that the magnetically controlled solenoid valve 130 closes, thus closing the connection between the designated detection chamber 110 and the sampling chamber 120. At the same time, the second driving airbag 230 no longer plugs the sampling chamber 120, and the water in the sampling chamber 120 will flow to the bottom of the sampling chamber 120. Then repeat the above actions, continue to lower the plugging component 200 and the detection component 300 for pumping water, inflating, and collecting work, and so on, to complete the sampling of groundwater in different water layers and the water level measurement.

[0058] Among them, the shielding carrier bin 210 is made of carbon steel or iron-nickel alloy. The shielding partition 250 is made of carbon steel or iron-nickel alloy. The magnet 240 can be an annular magnet 240.

[0059] Specifically, the high magnetic permeability of carbon steel or iron-nickel alloy makes it an effective material for shielding static magnetic fields, so that the magnet 240 in the shielding carrier bin 210 can only trigger the magnetically controlled solenoid valve 130 when it is at the through window 211, enabling the plugging assembly 200 to independently control the magnetically controlled solenoid valve 130 at a set position, thereby realizing the connection between the specified detection cavity 110 and the sampling cavity 120.

[0060] Specifically, the multi-channel well water body collection device provided in this embodiment has small requirements for the well pipe size and can work without opening large-diameter well pipes. It can realize groundwater sampling and water level measurement of multiple aquifers in small-diameter monitoring wells, is applicable to the complex geological conditions of small-diameter continuous multi-channel monitoring wells, can meet the needs of simultaneous sampling and measurement of multiple aquifers, and has stronger adaptability.

[0061] Moreover, the multi-channel well water body collection device provided in this embodiment integrates the functions of groundwater sampling and water level measurement, and can simultaneously complete water sample collection and water level measurement of multiple target layers in the same operation process, which not only improves work efficiency but also avoids data inconsistency problems caused by multiple operations.

[0062] At the same time, the multi-channel well water body collection device provided in this embodiment uses lightweight materials and optimized structural design, and does not require professional drilling rigs, drill pipes and other equipment. The whole set of devices is lighter, easier to carry and operate. This greatly reduces the workload of field operations and solves the problems of heavy equipment and difficult transportation in the prior art. Without relying on professional drilling rigs or other heavy equipment, due to the light weight, simple operation and high efficiency of the equipment, it can significantly reduce the labor, material and time costs of field operations.

[0063] By reducing equipment transportation and operation costs, the economic burden of field operations is further reduced. It can improve the frequency and accuracy of groundwater monitoring, and provide more reliable data support for environmental protection, water resource management and geological surveys. In response to sudden environmental pollution incidents, it can quickly obtain groundwater data and provide a scientific basis for emergency decision-making. It has strong social and economic benefits.

[0064] This embodiment provides a groundwater detection system, including a multi-channel well water body collection device.

[0065] The groundwater detection system provided in this embodiment has the above advantages of the multi-channel well water body collection device compared with the prior art, which will not be elaborated here.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-channel well water body collection device, characterized in that, Comprising: A well pipe body (100), a plugging assembly (200) and a detection assembly (300); A partition plate (101) is arranged inside the well pipe body (100) along its length direction, and the partition plate (101) divides the interior of the well pipe body (100) into a detection chamber (110) and a sampling chamber (120), and a plurality of the detection chambers (110) can all communicate with the sampling chamber (120); A plurality of magnetically controlled solenoid valves (130) for adapting to the plugging assembly (200) are arranged on the side wall of the sampling chamber (120); The plurality of magnetically controlled solenoid valves (130) are arranged in a circumferential direction of the sampling chamber (120) so that each magnetically controlled solenoid valve (130) can independently control different detection chambers (110), and the heights of the plurality of magnetically controlled solenoid valves (130) gradually decrease so that the plurality of detection chambers (110) can correspond to different water layers; The detection assembly (300) includes a traction cable (310), a sampling unit (320) and a liquid level sensor (330), the sampling unit (320) and the liquid level sensor (330) are both arranged on the traction cable (310), and the plugging assembly (200) is arranged at the bottom of the traction cable (310).

2. The multi-channel well water body collection device according to claim 1, characterized in that The traction cable (310) includes a steel wire rope, a data cable and a suction pipeline; The sampling unit (320) and the liquid level sensor (330) are both installed on the steel wire rope; The sampling unit (320) and the liquid level sensor (330) are connected with the data cable, and the sampling unit (320) is connected with the suction pipeline; The plugging assembly (200) is arranged at the bottom of the steel wire rope.

3. The multi-channel well water body collection device according to claim 2, characterized in that, The plugging assembly (200) includes a shielding bearing chamber (210), a first driving airbag (220), a second driving airbag (230), a magnet (240) and a shielding partition plate (250); The shielding bearing chamber (210) is fixedly arranged at the bottom of the steel wire rope; The first driving airbag (220) is arranged inside the shielding bearing chamber (210), the magnet (240) is placed on the first driving airbag (220), the shielding partition plate (250) is placed on the magnet (240), a through window (211) is opened in the upper part of the shielding bearing chamber (210), and the first driving airbag (220) can lift the magnet (240) from the bottom of the shielding bearing chamber (210) to the through window (211) so that the magnet (240) can trigger the magnetically controlled solenoid valve (130); The second driving airbag (230) is fixedly sleeved at the bottom of the shielding bearing chamber (210).

4. The multi-channel well water body collection device according to claim 3, characterized in that, The traction cable (310) further includes an air charging pipeline, and the first driving airbag (220) and the second driving airbag (230) are respectively connected with the air charging pipeline.

5. The multi-channel well water body collection device according to claim 3, characterized in that, The shielding bearing chamber (210) is made of carbon steel or iron-nickel alloy material.

6. The multi-channel well water body collection device according to claim 5, characterized in that, The shielding partition plate (250) is made of carbon steel or iron-nickel alloy material.

7. The multi-channel well water body collection device according to any one of claims 1-6, characterized in that, A power supply line for powering the magnetically controlled solenoid valve (130) is embedded in the inner wall of the well pipe body (100).

8. A groundwater detection system, characterized in that, It includes the multi-channel well water body collection device according to any one of claims 1-7.

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