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

Abstract

The invention provides a multi-channel well water body collection device and an underground water detection system, and relates to the technical field of geological environment detection. The multi-channel well water collection device comprises a well casing body, a plugging assembly and a detection assembly. A partition plate is arranged in the well casing body in the length direction of the well casing body and divides the interior of the well casing body into a detection cavity and a sampling cavity, and the multiple detection cavities can communicate with the sampling cavity. A plurality of magnetic control electromagnetic valves matched with the plugging assembly are arranged on the side wall of the sampling cavity; the detection assembly comprises 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 assembly is arranged at the bottom of the traction cable. The underground water detection system comprises the multi-channel well water body collection device. The technical effect that the narrow pipe diameter can be detected is achieved.

Description

Technical Field

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

[0002] Groundwater accounts for 30% of the world's freshwater resources and plays an important role in drinking, agricultural irrigation and industrial water use. However, human activities such as industrial wastewater discharge, agricultural fertilizer infiltration, and urban landfills have caused excessive levels of heavy metals (such as arsenic and cadmium), nitrates, and organic pollutants, threatening drinking water safety. At present, the water quality at groundwater testing points is poor or extremely poor, and accurate testing methods are urgently needed.

[0003] The groundwater system has a layered structure of upper stagnant water, groundwater and confined water. The water quality of different layers is significantly affected by the source of recharge and the migration path of pollutants. For example, confined water is more likely to accumulate heavy metals due to its closed nature, while the groundwater layer is easily polluted by surface runoff.

[0004] The existing technology can only achieve stratified sampling and water level measurement of groundwater in large-diameter single-hole detection wells. However, the use of 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 suitable for small-diameter detection wells. In addition, a drilling rig is needed to isolate between multiple aquifers. The packer is fixed 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, and difficult to transport. A professional drilling rig is also required for operation. The entire process is bulky, resulting in a large workload and complicated work in the field. Summary of the invention

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

[0006] In a first aspect, an embodiment of the present invention provides a multi-channel well water collection device, including a well pipe body, a plugging component and a detection component; A partition plate is provided 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 be connected to the sampling chamber; A plurality of magnetically controlled solenoid valves adapted to the blocking assembly 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 blocking component is arranged at the bottom of the traction cable.

[0007] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the traction cable comprises a steel wire rope, a data cable and a suction pipeline; The sampling unit and the liquid level sensor are both mounted on the steel wire rope; The data cable is connected to the sampling unit and the liquid level sensor, and the sampling unit is connected to the suction pipeline; The blocking assembly is arranged at the bottom of the steel wire rope.

[0008] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the blocking assembly includes a shielding bearing compartment, a first driving airbag, a second driving airbag, a magnet and a shielding baffle; The shielding bearing compartment is fixedly arranged at the bottom of the steel wire rope; The first driving airbag is arranged in the shielding bearing chamber, the magnet is placed on the first driving airbag, the shielding baffle is placed on the magnet, a transparent window is provided on the upper part of the shielding bearing chamber, and the first driving airbag can lift the magnet from the bottom of the shielding bearing chamber to the transparent window, so that the magnet can trigger the magnetically controlled solenoid valve; The second driving airbag is fixedly sleeved on the bottom of the shielding bearing compartment.

[0009] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the traction cable further includes an inflation pipeline, and the first driving airbag and the second driving airbag are respectively connected to the inflation pipeline.

[0010] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the shielding bearing compartment is made of carbon steel or iron-nickel alloy.

[0011] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the shielding baffle is made of carbon steel or iron-nickel alloy.

[0012] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the above-mentioned multiple magnetically controlled solenoid valves are arranged along the circumference of the sampling cavity so that each of the magnetically controlled solenoid valves can independently control a different detection cavity.

[0013] In combination with the first aspect, an embodiment of the present invention provides a possible implementation 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.

[0014] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein a power supply line for supplying power to the magnetically controlled solenoid valve is buried in the inner wall of the well pipe body.

[0015] In a second aspect, an embodiment of the present invention provides a groundwater detection system, including the multi-channel well water collection device.

[0016] Beneficial effects: An embodiment of the present invention provides a multi-channel well water collection device, including a well pipe body, a plugging assembly and a detection assembly; 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 multiple detection chambers can be connected to the sampling chamber; multiple magnetically controlled solenoid valves for adapting to the plugging assembly are arranged on the side wall of the sampling chamber; the detection assembly 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 assembly is arranged at the bottom of the traction cable.

[0017] Specifically, when in use, the staff inserts the well pipe body into the well pipe, and then uses the traction cable to put the sealing assembly and the detection assembly into the sampling chamber, and then uses the liquid level sensor to detect whether there is water in the sampling chamber. If there is water, the sampling chamber is evacuated through the sampling unit, and then the position of the sealing assembly is adjusted so that the sealing assembly can cooperate with the magnetically controlled solenoid valve on the side wall of the sampling chamber to connect a single detection chamber with the sampling chamber, and at the same time use the sealing assembly to seal the sampling chamber. After the liquid in the single detection chamber flows into the sampling chamber, the staff can use the sampling unit to extract the groundwater to be tested. This groundwater is the groundwater of the set formation. Then the sealing assembly leaves and the magnetically controlled solenoid valve can be closed again. By analogy, groundwater in different formations can be conveniently detected.

[0018] The embodiment of the present invention provides a groundwater detection system, including a multi-channel well water collection device. Compared with the prior art, the groundwater detection system has the above advantages, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of a plugging component and a detection component in a multi-channel well water collection device provided in an embodiment of the present invention; Figure 2A schematic cross-sectional view of a well pipe body in a multi-channel well water collection device provided by an embodiment of the present invention; Figure 3 A schematic diagram of the multi-channel well water collection device provided by an embodiment of the present invention when in use (when the magnet does not trigger the magnetically controlled solenoid valve); Figure 4 A schematic diagram of the multi-channel well water collection device provided in an embodiment of the present invention when in use (when the magnet triggers the magnetically controlled solenoid valve).

[0021] icon: 100-well pipe body; 101-separator; 110-detection chamber; 120-sampling chamber; 130-magnetically controlled solenoid valve; 200-blocking assembly; 210-shielding bearing chamber; 211-transparent window; 220-first driving airbag; 230-second driving airbag; 240-magnet; 250-shielding partition; 300 - detection component; 310 - traction cable; 320 - sampling unit; 330 - liquid level sensor. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0027] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment provides a multi-channel well water collection device, including 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 inside of the well pipe body 100 into a detection chamber 110 and a sampling chamber 120, and multiple detection chambers 110 can be connected to the sampling chamber 120; multiple magnetically controlled solenoid valves 130 for adapting to the plugging assembly 200 are arranged on the side wall of the sampling chamber 120; 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.

[0028] Specifically, when in use, the staff inserts the well pipe body 100 into the well pipe, and then uses the traction cable 310 to put the sealing component 200 and the detection component 300 into the sampling chamber 120, and then uses the liquid level sensor 330 to detect whether there is water in the sampling chamber 120. If there is water, the sampling chamber 120 is evacuated through the sampling unit 320, and then the position of the sealing component 200 is adjusted so that the sealing component 200 can cooperate with the magnetically controlled solenoid valve 130 on the side wall of the sampling chamber 120 to connect the single detection chamber 110 with the sampling chamber 120, and at the same time use the sealing component 200 to seal the sampling chamber 120. After the liquid in the 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. This groundwater is the groundwater of the set formation. Then the sealing component 200 leaves and can re-close the magnetically controlled solenoid valve 130. By analogy, groundwater in different formations can be conveniently detected.

[0029] The plurality of magnetically controlled solenoid valves 130 are arranged circumferentially along the sampling cavity 120 , so that each magnetically controlled solenoid valve 130 can independently control a different detection cavity 110 .

[0030] 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.

[0031] 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 .

[0032] The liquid level sensor 330 can measure the pressure of groundwater in the well pipe, and adopts an absolute pressure type pressure sensor. When in 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, and then subtracts the basic pressure value after measuring the water pressure, that is, atmospheric pressure compensation eliminates the influence of atmospheric pressure, and then calculates the groundwater level depth value according to the length of the lowered cable.

[0033] It should be noted that the plurality of detection chambers 110 surround the outer side of the sampling chamber 120 .

[0034] Among them, scales are set on the lead cable to facilitate the staff to know the depth below the blocking component 200 and the detection component 300.

[0035] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in an optional scheme of this embodiment, 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 to the data cable, and the sampling unit 320 is connected to the suction pipeline; the blocking assembly 200 is arranged at the bottom of the steel wire rope.

[0036] Specifically, the sampling unit 320 can extract groundwater, and the suction pipeline on the traction cable 310 is connected to the sampling unit 320, so that the groundwater can be extracted and collected.

[0037] There may be multiple data cables on the steel wire rope, which can control the operation of the sampling unit 320 and upload the signal measured by the liquid level sensor 330.

[0038] See also Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in an optional scheme of the present embodiment, the blocking 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 250; the shielding bearing chamber 210 is fixedly arranged at the bottom of the steel wire rope; the first driving airbag 220 is arranged in the shielding bearing chamber 210, the magnet 240 is placed on the first driving airbag 220, the shielding partition 250 is placed on the magnet 240, and a transparent window 211 is opened on 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 transparent window 211, so that the magnet 240 can trigger the magnetically controlled solenoid valve 130; the second driving airbag 230 is fixedly sleeved on the bottom of the shielding bearing chamber 210.

[0039] The shielding carrier chamber 210 and the shielding partition 250 can shield the magnet 240 , and the magnet 240 can trigger the magnetically controlled solenoid valve 130 only when it is lifted to the transparent window 211 by the first driving airbag 220 .

[0040] The traction cable 310 further includes an inflation pipeline, and the first driving airbag 220 and the second driving airbag 230 are respectively connected to the inflation pipeline.

[0041] Specifically, when performing the detection work, first place the plugging component 200 and the detection component 300 at the wellhead position of the middle sampling chamber 120, and 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 residual water in the sampling chamber 120, the plugging component 200 and the detection component 300 are lowered to a lower position. The liquid level sensor 330 can sense whether there is water in the well pipe. If there is water, the sampling unit 320 will be used to extract the water to keep the well pipe free of water. If there is no water, adjust the position of the plugging component 200 and the detection component 300 in the sampling chamber 120. It is known that each magnetic switch is set in the well. The height of the tube body 100 is determined, and then the second driving airbag 230 is placed under the magnetically controlled solenoid valve 130 at the designated position according to the scale on the traction cable 310. When the second driving airbag 230 is lowered to the target position, the first driving airbag 220 and the second driving airbag 230 are inflated through the inflation pipeline in the traction cable 310. When the first driving airbag 220 is inflated, the first driving airbag 220 can drive the magnet 240 thereon to move and lift to the transparent window 211. Thereby, the magnet 240 can trigger the designated magnetically controlled solenoid valve 130 to work. When the second driving airbag 230 is inflated, the second driving airbag 230 can fit tightly with the inner wall of the sampling chamber 120, thereby isolating the sampling chamber 120 into two upper and lower spaces, preventing the water body located on the second driving airbag 230 of the sampling chamber 120 from flowing downward, thereby ensuring 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 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 continue to rise. After 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 consistent, the data at this time is recorded, and the water level burial depth value can be calculated through the water pressure value of the liquid level sensor 330, the known atmospheric pressure and the cable lowering length, so that the staff can know the corresponding water layer of the groundwater collected this time. After the sampling and water level measurement are completed, the first driving airbag 220 and the second driving airbag 230 are exhausted through the inflation pipeline, and the first driving airbag 220 and the second driving airbag 230 are restored to the contracted state. The first driving airbag 220 contracts so that the magnet 240 descends and is shielded by the shielding carrier chamber 210 and the shielding partition 250, so that the magnetically controlled electromagnetic valve 130 is closed, thereby 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 blocks 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 blocking component 200 and the detection component 300 to pump water, inflate, and collect water, and so on, to complete the water sampling and water level measurement of different water layers.

[0042] The shielding bearing chamber 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 a ring magnet 240.

[0043] Specifically, the high magnetic permeability of carbon steel or iron-nickel alloy can make it an effective material for shielding static magnetic fields, so that the magnet 240 in the shielding carrier chamber 210 can trigger the magnetically controlled solenoid valve 130 only when it is at the transparent window 211, so that the sealing component 200 can individually control the magnetically controlled solenoid valve 130 at the set position, thereby realizing the connection between the designated detection chamber 110 and the sampling chamber 120.

[0044] Specifically, the multi-channel well water collection device provided in this embodiment has small requirements on the well pipe size and can work without opening a large-diameter well pipe. It can realize groundwater sampling and water level measurement of multiple aquifers in small-aperture monitoring wells. It is suitable for the complex geological conditions of small-aperture continuous multi-channel monitoring wells, can meet the needs of simultaneous sampling and measurement of multiple aquifers, and has stronger adaptability.

[0045] In addition, the multi-channel well water collection device provided in this embodiment integrates groundwater sampling and water level measurement functions, 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.

[0046] At the same time, the multi-channel well water collection device provided in this embodiment adopts lightweight materials and optimized structural design, and does not require professional drilling rigs, drill rods and other equipment. The whole set of equipment is lighter, easier to carry and operate. This greatly reduces the workload of field operations and solves the problem of heavy equipment and difficulty in transportation in the prior art. There is no need to rely on professional drilling rigs or other heavy equipment. Since the equipment is light, easy to operate and efficient, it can significantly reduce the manpower, material and time costs of field operations.

[0047] By reducing equipment transportation and operating 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 resources management and geological surveys. When responding to sudden environmental pollution incidents, groundwater data can be quickly obtained to provide a scientific basis for emergency decision-making. It has strong social and economic benefits.

[0048] This embodiment provides a groundwater detection system, including a multi-channel well water collection device.

[0049] Compared with the prior art, the groundwater detection system provided in this embodiment has the advantages of the above-mentioned multi-channel well water collection device, which will not be described in detail here.

[0050] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-channel well water collection device, characterized in that: include: Well pipe body (100), plugging assembly (200) and detection assembly (300); A partition plate (101) is provided inside the well pipe body (100) along its length direction, and the partition plate (101) divides the inside 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 be communicated with the sampling chamber (120); A plurality of magnetically controlled solenoid valves (130) adapted to match the blocking assembly (200) are arranged on the side wall of the sampling cavity (120); The detection assembly (300) comprises 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 blocking assembly (200) is arranged at the bottom of the traction cable (310).

2. The multi-channel well water collection device according to claim 1, characterized in that: The traction cable (310) comprises 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 data cable is connected to the sampling unit (320) and the liquid level sensor (330), and the sampling unit (320) is connected to the suction pipeline; The blocking assembly (200) is arranged at the bottom of the steel wire rope.

3. The multi-channel well water collection device according to claim 2, characterized in that: The blocking assembly (200) comprises a shielding bearing chamber (210), a first driving airbag (220), a second driving airbag (230), a magnet (240) and a shielding partition (250); The shielding bearing compartment (210) is fixedly arranged at the bottom of the steel wire rope; The first driving airbag (220) is arranged in the shielding bearing chamber (210), the magnet (240) is placed on the first driving airbag (220), the shielding partition (250) is placed on the magnet (240), and a transparent window (211) is provided on 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 transparent window (211), so that the magnet (240) can trigger the magnetically controlled solenoid valve (130); The second driving airbag (230) is fixedly sleeved on the bottom of the shielding bearing chamber (210).

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

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

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

7. The multi-channel well water collection device according to any one of claims 1 to 6, characterized in that: The plurality of magnetically controlled solenoid valves (130) are arranged circumferentially along the sampling cavity (120), so that each of the magnetically controlled solenoid valves (130) can independently control a different detection cavity (110).

8. The multi-channel well water collection device according to claim 7, characterized in that: 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.

9. The multi-channel well water collection device according to any one of claims 1 to 6, characterized in that: 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).

10. A groundwater detection system, characterized in that: It comprises the multi-channel well water collection device as described in any one of claims 1-9.

Images