An environmental geology surveying apparatus

Abstract

The utility model relates to environmental geology investigation technical field discloses a kind of environmental geology investigation equipment, applied to monitoring well, comprising: processor, first dynamometer electrically connected with processor, second dynamometer, range finder and pressure sensor, range finder is used to determine the liquid level depth in monitoring well;First connecting rope, second connecting rope and density ball, one end of first connecting rope is connected with density ball, one end of first connecting rope, and one end of second connecting rope is vertically arranged in monitoring well, first connecting rope and second connecting rope are same specification;First winch mechanism and second winch mechanism electrically connected with processor, first winch mechanism and second winch mechanism are one-to-one corresponding connection the other end of first connecting rope and the other end of second connecting rope;And third connecting rope, one end of third connecting rope is connected with pressure sensor.Compared with prior art, the utility model can improve the thickness calculation accuracy of NAPL layer.

Description

Technical Field

[0001] This utility model relates to the field of environmental geological survey technology, and in particular to an environmental geological survey device. Background Technology

[0002] Environmental geological survey equipment plays a crucial role in modern environmental protection and geological research. With the acceleration of industrialization, soil and groundwater pollution problems are becoming increasingly serious, especially petroleum hydrocarbon pollution. Petroleum hydrocarbon pollutants migrate downwards along soil fissures, forming non-aqueous liquid (NAPL) layers in groundwater, causing widespread pollution of soil and groundwater. To effectively manage this pollution, environmental geological survey equipment is widely used for monitoring and assessing pollution levels. These devices can not only monitor the thickness of polluted layers in real time but also provide a scientific basis for pollution remediation plans, demonstrating broad application prospects and significant environmental importance.

[0003] In existing technology, patent document CN223319777U discloses a real-time groundwater monitoring well. This method improves the accuracy of NAPL layer thickness calculation by using drainage methods to calculate the density of groundwater and the non-aerated groundwater layer (NAPL) layer by installing devices such as a density sphere, electronic force gauge, rangefinder, and pressure sensor inside the monitoring well. However, this method has a significant drawback in the calculation process: because a blank control group with a connecting rope is not included, the weight and buoyancy information of the connecting rope connected to the density sphere are not considered. This results in the failure to accurately deduct the influence of the connecting rope when calculating the buoyancy of the density sphere, leading to errors in the measured NAPL layer thickness. Such errors may lead to misjudgments of the contaminated layer thickness in practical applications, thus affecting the effectiveness of pollution control.

[0004] Therefore, improving the accuracy of NAPL layer thickness calculations and ensuring the accuracy and reliability of monitoring data has become a critical issue urgently needing to be addressed in the field of environmental geological surveys. Accurate monitoring data not only provides a more scientific basis for pollution control but also effectively reduces unnecessary resource waste and environmental damage. Overcoming this technical deficiency is of great significance for improving the overall performance and application value of environmental geological survey equipment. Utility Model Content

[0005] The present invention aims to provide an environmental geological survey device to overcome the shortcomings mentioned above.

[0006] In order to achieve the above objectives, the technical solution of this utility model is as follows:

[0007] An environmental geological survey device, used in monitoring wells, includes:

[0008] The system includes a processor, a first force gauge, a second force gauge, a rangefinder, and a pressure sensor, all electrically connected to the processor. The rangefinder is used to determine the depth of the liquid level in the monitoring well.

[0009] A first connecting rope, a second connecting rope, and a density ball are provided. One end of the first connecting rope is connected to the density ball. One end of the first connecting rope and one end of the second connecting rope are suspended in the monitoring well. The first connecting rope and the second connecting rope are of the same specification.

[0010] A first hoisting mechanism and a second hoisting mechanism are electrically connected to the processor. The first hoisting mechanism and the second hoisting mechanism are respectively connected to the other ends of the first connecting rope and the second connecting rope. The first force gauge and the second force gauge can measure the tension force on the other ends of the first and second connecting ropes.

[0011] The third connecting rope has one end connected to the pressure sensor, which is located below the lowest perennial groundwater level.

[0012] Furthermore, it also includes a first fixed pulley and a first movable pulley. The first fixed pulley and the first movable pulley are sequentially wound around the middle of the first connecting rope. The first movable pulley is located on the side of the first movable pulley near one end of the first connecting rope, and the two tangent points between the middle of the first connecting rope and the first movable pulley are both located on the horizontal radial extension line of the first movable pulley. The first force gauge is used to measure the downward force on the first movable pulley, and the processor is used to read the value measured by the first force gauge.

[0013] Furthermore, it also includes a second fixed pulley and a second movable pulley. The second connecting rope is wound around the second fixed pulley and the second movable pulley in sequence around its middle section. The second movable pulley is located on the side of the second movable pulley near one end of the second connecting rope, and the two tangent points between the middle section of the second connecting rope and the second movable pulley are both located on the horizontal radial extension line of the second movable pulley. The second electronic force gauge is used to measure the downward force on the second movable pulley, and the processor is used to read the value measured by the second electronic force gauge.

[0014] Furthermore, the first movable pulley and the second movable pulley are of the same specification and are at the same height in the horizontal direction.

[0015] Furthermore, it also includes a support platform installed on the ground surface, on which the first force gauge, the second force gauge, the rangefinder, the first fixed pulley, and the second fixed pulley are all installed, and the other end of the third connecting rope is fixedly connected to the support platform.

[0016] Furthermore, the tangent point between the first connecting rope and the first movable pulley, located away from the first fixed pulley, is defined as the first height, and the rangefinder is used to measure the height difference between the first height and the monitoring well fluid level.

[0017] Furthermore, the first winch mechanism includes a first geared motor and a first winch reel that is drivenly connected to the first geared motor. The first geared motor is electrically connected to the processor, and the other end of the first connecting rope is wound around the first winch reel.

[0018] Furthermore, the second winch mechanism includes a second geared motor and a second winch reel that is drivenly connected to the second geared motor. The second geared motor is electrically connected to the processor, and the other end of the second connecting rope is wound around the second winch reel.

[0019] Furthermore, the rangefinder is an ultrasonic rangefinder.

[0020] Compared with the prior art, this utility model has at least the following advantages:

[0021] During the measurement process, the processor controls the first and second winch mechanisms to synchronously adjust the lengths of the first and second connecting ropes, causing the density sphere to move within the water layer and the NAPL layer. By measuring the tension at the other ends of the first and second connecting ropes using the first and second force gauges respectively, and combining this with the volume and mass of the density sphere, the densities of the water layer and the NAPL layer can be calculated. The distance measuring instrument measures the height difference between the first height and the liquid level in the monitoring well; combined with the pressure value measured by the pressure sensor, the thickness of the NAPL layer can be accurately calculated. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the environmental geological survey equipment of this utility model.

[0024] Reference numerals: 1. Processor; 2. First force gauge; 3. Second force gauge; 4. Rangefinder; 5. Pressure sensor; 6. First connecting rope; 7. Second connecting rope; 8. Density ball; 9. Third connecting rope; 10. First fixed pulley; 11. First movable pulley; 12. Second fixed pulley; 13. Second movable pulley; 14. Support platform; 15. First geared motor; 16. First winch; 17. Second geared motor; 18. Second winch. 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] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Reference Figure 1 This invention provides an environmental geological survey device, primarily used to monitor the depth of liquid levels in wells and the thickness of groundwater and non-aqueous liquid layers. Through precise measurement and calculation, this device can effectively improve the accuracy of monitoring data.

[0028] The specific structure includes a processor 1, a first force gauge 2, a second force gauge 3, a rangefinder 4, a pressure sensor 5, a third connecting rope 9, a first connecting rope 6, a second connecting rope 7, and a density ball 8.

[0029] The system comprises the following components: Processor 1, acting as the control center, is electrically connected to the first force gauge 2, the second force gauge 3, the rangefinder 4, and the pressure sensor 5, and is responsible for data acquisition. The rangefinder 4 employs ultrasonic ranging technology to determine the depth of the liquid level in the monitoring well. The pressure sensor 5 is installed at one end of the third connecting rope 9, located below the lowest perennial groundwater level, and is used to measure groundwater pressure. One end of the first connecting rope 6 is connected to a density ball 8, whose density is greater than that of water, for measurement within the aquifer and NAPL layers. The first connecting rope 6 and the second connecting rope 7 are of the same specifications, with one end of each rope suspended vertically within the monitoring well. The other ends of the first connecting rope 6 and the second connecting rope 7 are respectively connected to a first winch mechanism and a second winch mechanism. The first winch mechanism controls the raising and lowering of the first connecting rope 6, and the second winch mechanism controls the raising and lowering of the second connecting rope 7. The first force gauge 2 and the second force gauge 3 can respectively measure the tension on the other end of the first connecting rope 6 and the other end of the second connecting rope 7. The first force gauge 2 and the second force gauge 3 preferably use electronic force gauges.

[0030] To improve measurement accuracy and stability, the device of this invention also includes a first fixed pulley 10, a first movable pulley 11, a second fixed pulley 12, and a second movable pulley 13. The middle portion of the first connecting rope 6 passes sequentially over the first fixed pulley 10 and the first movable pulley 11, with the first movable pulley 11 positioned above the first fixed pulley 10. Both tangent points of the first movable pulley 11 are located on its horizontal radial extension line, and the first force gauge 2 is used to measure the downward force on the first movable pulley 11. Similarly, the middle portion of the second connecting rope 7 passes sequentially over the second fixed pulley 12 and the second movable pulley 13, with the second movable pulley 13 positioned above the second fixed pulley 12. The two tangent points of the second movable pulley 13 are also located on its horizontal radial extension line, and the second force gauge 3 is used to measure the downward force on the second movable pulley 13. The first movable pulley 11 and the second movable pulley 13 are of the same specifications and are at the same height in the horizontal direction.

[0031] The first force gauge 2, the second force gauge 3, the rangefinder 4, the first fixed pulley 10, and the second fixed pulley 12 are installed on the support platform 14 on the ground surface. The support platform 14 provides a stable installation foundation for the equipment, ensuring the stability of the measurement process. The other end of the third connecting rope 9 is fixedly connected to the support platform 14, and the pressure sensor 5 is suspended below the lowest perennial groundwater level via the third connecting rope 9.

[0032] The first and second winch mechanisms are respectively connected to the other ends of the first connecting rope 6 and the second connecting rope 7. Each winch mechanism includes a geared motor and a winch reel. The geared motor is electrically connected to the processor 1, and the winch reel can precisely wind up and unwind the connecting ropes under the control of the processor 1. This design ensures precise control of the connecting ropes, thereby enabling precise adjustment of the position of the density ball 8.

[0033] Specifically, the first winch mechanism includes a first geared motor 15 and a first winch reel 16 drivenly connected to the first geared motor 15. The first geared motor 15 is electrically connected to the processor 1, and the other end of the first connecting rope 6 is wound on the first winch reel 16. The second winch mechanism includes a second geared motor 17 and a second winch reel 18 drivenly connected to the second geared motor 17. The second geared motor 17 is electrically connected to the processor 1, and the other end of the second connecting rope 7 is wound on the second winch reel 18. The first geared motor 15 and the second geared motor 17 are preferably stepper motors and servo motors, respectively.

[0034] The working principle of this utility model:

[0035] Step 1: Adjust the length of the third connecting rope 9 to ensure that it can pass through the NAPL layer and extend into a certain position in the groundwater. This position is the monitoring point, and the height between the first height and the pressure sensor 5 is recorded as L. The distance between the rangefinder 4 and the liquid surface of the monitoring well is recorded as L_liquid. The pressure sensor 5 monitors the pressure P at this monitoring point.

[0036] The second step involves the first and second drive motors rotating synchronously, causing one end of the first connecting rope 6 and one end of the second connecting rope 7 to simultaneously extend into the groundwater, ensuring that the density ball 8 is at the same height as the pressure sensor 5. At this time, the reading of the first force gauge 2 is recorded as F1, and the reading of the second force gauge 3 is recorded as F2.

[0037] The third step involves the first and second drive motors rotating synchronously in opposite directions, causing one end of the first connecting rope 6 and one end of the second connecting rope 7 to be slowly lifted. When the reading of the first electronic gauge 2 changes, the lifting speed is reduced, and the lifting operation continues until the reading of the first force gauge 2 no longer changes. This indicates that the density ball 8 is located in the NAPL layer. The reading of the first force gauge 2 at this time is recorded as F3, and the reading of the second force gauge 3 is recorded as F4.

[0038] The fourth step is data calculation. The NAPL layer thickness calculation process is as follows:

[0039] P = g × (L oil × ρ oil + L water × ρ water)

[0040] LL liquid = L oil + L water

[0041] F1 / 2 - F2 / 2 + ρwater × g × V = m × g

[0042] F3 / 2-F4 / 2+ρoil×g×V=m×g

[0043] Where P is the pressure at the monitoring point, g = 9.8 N / kg, ρwater is the density of groundwater, ρoil is the density of the NAPL phase, Lwater is the thickness of the groundwater layer at the 5 pressure sensors, and Loil is the thickness of the NAPL layer. Solving the above equations simultaneously, we get:

[0044] L_oil = [2PV - (LL_liquid)(2mg - F1 + F2)] / (F1 - F2 - F3 + F4).

[0045] During the measurement process, processor 1 controls the first and second winch mechanisms to synchronously adjust the lengths of the first connecting rope 6 and the second connecting rope 7, causing the density ball 8 to move between the water layer and the NAPL layer. The forces acting on the first and second movable pulleys 11 and 11 are measured by the first force gauge 2 and the second force gauge 3, respectively. Combined with the volume and mass of the density ball 8, the densities of the water layer and the NAPL layer can be calculated. The distance measuring instrument 4 measures the height difference between the first height and the liquid surface in the monitoring well. Combined with the pressure value measured by the pressure sensor 5, the thickness of the NAPL layer can be accurately calculated, improving the accuracy and reliability of the monitoring data.

[0046] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An environmental geological survey device, applied to monitoring wells, characterized in that, include: The processor (1), a first force gauge (2), a second force gauge (3), a rangefinder (4), and a pressure sensor (5) are electrically connected to the processor (1), wherein the rangefinder (4) is used to determine the depth of the liquid level in the monitoring well; A first connecting rope (6), a second connecting rope (7), and a density ball (8). One end of the first connecting rope (6) is connected to the density ball (8). One end of the first connecting rope (6) and one end of the second connecting rope (7) are suspended in the monitoring well. The first connecting rope (6) and the second connecting rope (7) are of the same specification. The first hoisting mechanism and the second hoisting mechanism are electrically connected to the processor (1). The first hoisting mechanism and the second hoisting mechanism are connected one-to-one to the other end of the first connecting rope (6) and the other end of the second connecting rope (7). The first force gauge (2) and the second force gauge (3) can respectively measure the tension on the other end of the first connecting rope (6) and the other end of the second connecting rope (7). as well as The third connecting rope (9) has one end connected to the pressure sensor (5), which is located below the lowest perennial groundwater level.

2. The environmental geological survey equipment according to claim 1, characterized in that, It also includes a first fixed pulley (10) and a first movable pulley (11). The first fixed pulley (10) and the first movable pulley (11) are sequentially wound around the middle of the first connecting rope (6). The first movable pulley (11) is located on the side of the first movable pulley (11) close to one end of the first connecting rope (6). The two tangent points between the middle of the first connecting rope (6) and the first movable pulley (11) are both located on the horizontal radial extension line of the first movable pulley (11). The first force gauge (2) is used to measure the downward force on the first movable pulley (11). The processor (1) is used to read the value measured by the first force gauge (2).

3. The environmental geological survey equipment according to claim 2, characterized in that, It also includes a second fixed pulley (12) and a second movable pulley (13). The second fixed pulley (12) and the second movable pulley (13) are sequentially wound around the middle of the second connecting rope (7). The second movable pulley (13) is located on the side of the second movable pulley (13) close to one end of the second connecting rope (7). The two tangent points between the middle of the second connecting rope (7) and the second movable pulley (13) are both located on the horizontal radial extension line of the second movable pulley (13). The second force gauge is used to measure the downward force on the second movable pulley (13). The processor (1) is used to read the value measured by the second force gauge.

4. The environmental geological survey equipment according to claim 3, characterized in that, The first movable pulley (11) and the second movable pulley (13) are of the same specification and are at the same height in the horizontal direction.

5. The environmental geological survey equipment according to claim 4, characterized in that, It also includes a support platform (14) installed on the ground surface. The first force gauge (2), the second force gauge (3), the rangefinder (4), the first fixed pulley (10) and the second fixed pulley (12) are all installed on the support platform (14). The other end of the third connecting rope (9) is fixedly connected to the support platform (14).

6. The environmental geological survey equipment according to claim 5, characterized in that, The first height is defined as the point of tangency between the first connecting rope (6) and the first movable pulley (11) located away from the first fixed pulley (10). The rangefinder (4) is used to measure the height difference between the first height and the monitoring well liquid level.

7. The environmental geological survey equipment according to claim 6, characterized in that, The first hoisting mechanism includes a first geared motor (15) and a first hoisting reel (16) that is drivenly connected to the first geared motor (15). The first geared motor (15) is electrically connected to the processor (1). The other end of the first connecting rope (6) is wound around the first hoisting reel (16).

8. The environmental geological survey equipment according to claim 7, characterized in that, The second winch mechanism includes a second geared motor (17) and a second winch reel (18) that is drivenly connected to the second geared motor (17). The second geared motor (17) is electrically connected to the processor (1). The other end of the second connecting rope (7) is wound around the second winch reel (18).

9. The environmental geological survey equipment according to claim 1, characterized in that, The rangefinder (4) is an ultrasonic rangefinder.

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