Online monitor for flow velocity and flow direction of underground water

Abstract

The invention discloses an underground water flow velocity and flow direction online monitor which comprises a shell, a downward light source and a camera are arranged in the lower side of the shell, and the light source and the camera are connected to a controller in the shell and connected with an external processing system through data lines; the axis of the lower side of the shell is movably connected with a suspension needle, and the suspension needle can freely rotate towards any direction and any angle on the lower side of the shell; a suspension is arranged on the outer side of the lower portion of the shell, a bottom plate is connected to the lower portion of the suspension, a dial coaxial with the suspension needle is arranged at the axis of the bottom plate, and annular azimuth angle scale marks and radial distance scale marks are arranged on the dial. The measuring instrument is simple in structure, low in cost, easy to operate, good in stability and suitable for frequent and conventional underground water flow velocity and flow direction measurement work.

Description

Technical Field

[0001] The present invention relates to a water flow velocity and direction monitor, especially an on-line monitor for underground water flow velocity and direction. Background Art

[0002] During the process of hydrology and geological exploration, measuring the water flow velocity and direction within a region is a relatively routine exploration task. Currently, there are mainly the following methods for measuring water flow velocity and direction:

[0003] 1. Doppler measurement technology. The principle of this technology is to emit ultrasonic signals and receive the reflected signals from suspended particles in the water flow, and use the Doppler effect to calculate the flow velocity and flow rate. At the same time, by combining multiple groups of sensors or array layouts, the flow direction of the water flow is deduced by analyzing the frequency shift differences of the reflected signals in different directions. The characteristics of this technology are non-contact measurement, high accuracy, and adaptability to complex environments. However, its disadvantages are that the equipment is complex, the operation is cumbersome, the cost is high, and it is not suitable for measuring in groundwater environments.

[0004] 2. Electromagnetic induction technology. The principle of this technology is to measure the flow velocity by using the induced electromotive force difference generated by the movement of the water flow in the earth's magnetic field. At the same time, by combining the relationship between the electrode arrangement and the magnetic field direction, the flow direction of the water flow is judged based on the direction of the electromotive force. The characteristic of this technology is strong anti-interference ability. However, its disadvantages are that the operation is complex, the equipment is expensive, and it is more suitable for scenarios such as pipelines and oceans.

[0005] 3. Portable measuring instrument. The principle of this technology is to calculate the flow velocity through a propeller or a radar sensor, by means of the rotation of the rotor driven by water power or the reflection signal of the radar wave. This technology is only applicable to measuring the flow velocity, and the application scenarios are suitable for river channels and agricultural irrigation, etc., and are not suitable for groundwater measurement.

[0006] 4. Thermosensitive measurement technology. The principle of this technology is to judge the flow velocity and direction by the temperature difference change between the linear heat source and the surrounding thermosensitive components, and the direction with the largest temperature difference is the water flow direction. The device structure of this technology is compact and is designed specifically for groundwater detection. However, this technology also has defects. The main ones are that the cost of the thermosensitive device is relatively high. In addition, it has a strong dependence on the sensor and the processing computer, and is greatly affected by the stability of the device itself.

[0007] In summary, in the technology of measuring underground water flow velocity and direction, the current technologies have defects such as complex operation, expensive equipment, poor stability, high cost, or poor applicability, and are not suitable for frequent or routine measurement work of underground water flow velocity and direction. Summary of the Invention

[0008] To solve the above technical problems, the present invention provides an on-line monitor for the flow velocity and direction of underground water. The measuring instrument of the present invention has a simple structure, low cost, easy operation, good stability, and can monitor in real time online, and is suitable for the measurement of the flow velocity and direction of underground water in frequent and regular operations.

[0009] The technical solution of the present invention:

[0010] An on-line monitor for the flow velocity and direction of underground water, including a housing. A downward light source and a camera are built in the lower side of the housing. The light source and the camera are connected to a controller in the housing and are connected to an external processing system through a data line;

[0011] A suspension needle is movably connected to the axis at the lower side of the housing, and the suspension needle can freely rotate in any direction and at any angle on the lower side of the housing;

[0012] A suspension is provided on the outer side below the housing. A bottom plate is connected below the suspension. A scale disk coaxial with the suspension needle is provided at the axis of the bottom plate. Ring-shaped azimuth scale lines and radial distance scale lines are provided on the scale disk.

[0013] In this solution, by setting a freely rotatable suspension needle, and using a light source and a scale disk to obtain the deflection direction and distance of the suspension needle, and finally obtaining the data of the deflection direction and distance through a camera, the flow velocity and direction of underground water are measured. The overall structure of this solution is simple, the cost is low, the operation is easy, and it does not rely on high-precision sensors, has better stability, can monitor in real time online, and is suitable for the measurement of complex underground water environments.

[0014] Preferably, for the above on-line monitor for the flow velocity and direction of underground water, a splicing rod is connected to the top of the housing.

[0015] In this solution, by using the splicing rod to connect the monitor, the measuring instrument can be better extended to different depths of underground water, and the applicability is stronger.

[0016] Preferably, for the above on-line monitor for the flow velocity and direction of underground water, one end of the splicing rod is provided with a threaded connection head, and the other end is provided with an internal threaded hole matching the threaded connection head; a threaded connection hole matching the threaded connection head is provided at the top of the housing, and the threaded connection hole is coaxial with the suspension needle.

[0017] In this solution, the splicing rods are connected by the thread head and tail, and the structure is simple and the operation is convenient.

[0018] Preferably, the aforementioned on-line monitor for underground water flow velocity and direction is arranged such that the underground water flow velocity and direction flow towards the monitor. The adjacent splicing rods can also be connected through a connector. The connector includes an upper connecting plate and a lower connecting plate, which are connected by a connecting rod. The monitor is arranged between the upper connecting plate and the lower connecting plate. An upper through hole is provided at the center of the upper connecting plate. The threaded connection head at the lower end of the splicing rod passes through the upper through hole and is fixed by a fastening nut. A lower through hole is provided at the center of the lower connecting plate. After the internal threaded hole at the upper end of the splicing rod is placed below the lower through hole, it is fixed by a fastening screw passing through the lower through hole.

[0019] In this solution, by arranging a connector between the splicing rods and placing the measuring instrument inside the connector, multiple measuring instruments can be installed on one splicing rod simultaneously to measure the flow velocity and direction of underground water at different depths, with stronger applicability.

[0020] Preferably, for the aforementioned on-line monitor for underground water flow velocity and direction, a non-circular sunk groove one coaxial with the upper through hole is provided on the upper side of the upper through hole, and a limiting flange one matching the non-circular sunk groove one is provided at the lower end of the splicing rod. A non-circular sunk groove two coaxial with the lower through hole is provided on the lower side of the lower through hole, and a limiting flange two matching the non-circular sunk groove two is provided at the upper end of the splicing rod.

[0021] In this solution, by providing mutually matching non-circular sunk grooves and limiting flanges on the connector and the splicing rods, it can be ensured that there is no relative rotation between the splicing rods and the connector after assembly, with a more reasonable design and more convenient for detection.

[0022] Preferably, for the aforementioned on-line monitor for underground water flow velocity and direction, a 0 azimuth positioning line is provided on the outer side of the housing, and the 0 azimuth positioning line coincides with the 0 azimuth direction of the azimuth angle scale line. A lower alignment line is provided on the outer side of the bottom of the splicing rod, and an upper alignment line is provided on the outer side of the top.

[0023] In this solution, by providing the 0 azimuth positioning line and the upper and lower alignment lines, operators can accurately obtain the 0 azimuth direction of the measuring instrument on the ground, which is more convenient for detection.

[0024] Preferably, for the aforementioned on-line monitor for underground water flow velocity and direction, the camera is arranged inside the suspension, and the number of cameras is at least 2.

[0025] In this solution, by providing at least 2 cameras and placing them inside the suspension, it can avoid the shadow being blocked by the suspension needle and unable to accurately obtain data, with a more reasonable design and better measurement stability.

[0026] Preferably, for the aforementioned on-line monitor for underground water flow velocity and direction, the suspension needle is connected to the lower part of the housing through a ball head structure.

[0027] In this solution, the suspension needle is connected through a ball head structure, with higher rotational freedom and better stability.

[0028] Preferably, the foregoing groundwater flow velocity and direction online monitor, the ball head structure includes a ball head fixedly connected to the top of the suspension needle, a spherical groove cooperating with the ball head is provided below the housing, and a limiting snap ring is provided at the notch of the spherical groove.

[0029] Preferably, for the foregoing groundwater flow velocity and direction online monitor, a ball is provided between the ball head and the spherical groove.

[0030] In this solution, by providing a ball between the ball head and the spherical groove, the suspension needle rotates more flexibly, with less resistance, more accurate measurement results, and higher stability.

[0031] Advantages of the present invention:

[0032] 1. The present invention measures the flow velocity and direction of groundwater flow by setting a freely rotatable suspension needle, obtaining the deflection direction and distance of the suspension needle with a light source and a dial, and finally obtaining the data of the deflection direction and distance through a camera. The overall structure of the present invention is simple, the cost is low, the operation is easy, and it does not rely on high-precision sensors, has better stability, can perform real-time online monitoring, and is suitable for measuring in complex groundwater environments.

[0033] 2. The present invention connects the monitor by using a splicing rod, which can better extend the measuring instrument to different depths of groundwater and has stronger applicability.

[0034] 3. The splicing rods of the present invention are connected by threaded heads and tails, with a simple structure and convenient operation.

[0035] 4. The present invention installs a connector between the splicing rods and places the measuring instrument in the connector, so that multiple measuring instruments can be installed on one splicing rod at the same time to measure the flow velocity and direction of groundwater at different depths simultaneously, with stronger applicability.

[0036] 5. By providing mutually cooperating non-circular sunk grooves and limiting flanges on the connector and the splicing rods of the present invention, relative rotation between the splicing rods and the connector can be prevented after assembly, the design is more reasonable, and it is more convenient for detection.

[0037] 6. By setting a 0 azimuth positioning line and upper and lower alignment lines, the operator can accurately obtain the 0 azimuth direction of the measuring instrument on the ground, which is more convenient for detection.

[0038] 7. By providing at least two cameras and placing them inside the suspension, the present invention can avoid the shadow being blocked by the suspension needle and unable to accurately obtain data, with a more reasonable design and better measurement stability.

[0039] 8. The suspension needle of the present invention is connected by a ball head structure, with a higher degree of rotational freedom and better stability.

[0040] 9. By providing ball bearings between the ball head and the spherical groove, the suspension needle rotates more flexibly with less resistance, resulting in more accurate measurement results and higher stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] FIG Figure 1 is a schematic external view of the monitor of the present invention;

[0042] FIG Figure 2 is a plane cross-sectional view of the monitor of the present invention;

[0043] FIG Figure 3 is a partially enlarged view of the monitor of the present invention;

[0044] FIG Figure 4 is a plan view of the dial of the monitor of the present invention;

[0045] FIG Figure 5 is a schematic structural view of the monitor of the present invention after connecting the splicing rod;

[0046] FIG Figure 6 is a schematic connection structure view of the connector and the splicing rod of the present invention;

[0047] FIG Figure 7 is a partial schematic view of the top end of the splicing rod of the present invention;

[0048] FIG Figure 8 is a partial schematic view of the bottom end of the splicing rod of the present invention;

[0049] FIG Figure 9 is a plane cross-sectional view of the connector of the present invention;

[0050] FIG Figure 10 is a working relationship view of the suspension needle and the dial of the present invention.

[0051] DESCRIPTION OF THE REFERENCE NUMERALS: 1 - housing, 2 - suspension, 3 - base plate, 4 - dial, 5 - azimuth scale line, 6 - radial distance scale line, 7 - suspension needle, 8 - camera, 9 - controller, 10 - data line, 11 - light source, 12 - ball head, 13 - threaded connection hole, 14 - 0 azimuth positioning line, 15 - splicing rod, 16 - lower alignment line, 17 - upper alignment line, 18 - threaded connection head, 19 - internal threaded hole, 20 - connector, 21 - upper connecting plate, 22 - lower connecting plate, 23 - connecting rod, 24 - upper through hole, 25 - lower through hole, 26 - fastening nut, 27 - fastening screw, 28 - non-circular sink one, 29 - non-circular sink two, 30 - limiting flange one, 31 - limiting flange two, 32 - spherical groove, 33 - limiting snap ring, 34 - ball bearing. DETAILED DESCRIPTION OF THE INVENTION

[0052] The present invention will be further described below in conjunction with embodiments, which shall not be used as a basis for limiting the present invention.

[0053] Embodiments of the present invention

[0054] An on-line monitor for underground water flow velocity and direction, as shown in the appendix Figure 1-9 As shown, it includes a housing 1. A downward light source 11 and a camera 8 are built in the lower side of the housing 1. The light source 11 and the camera 8 are connected to a controller 9 in the housing 1 and are connected to an external processing system through a data line 10. The data line 10 simultaneously undertakes the functions of power supply and signal transmission;

[0055] A suspension needle 7 is movably connected to the axis of the lower side of the housing 1. The suspension needle 7 can freely rotate in any direction and at any angle on the lower side of the housing 1;

[0056] A suspension 2 is provided on the outside of the lower part of the housing 1. A bottom plate 3 is connected below the suspension 2. A dial 4 coaxial with the suspension needle 7 is provided at the axis of the bottom plate 3. An annular azimuth scale line 5 and a radial distance scale line 6 are provided on the dial 4.

[0057] The overall height of the monitor in this embodiment is 114 mm, and the maximum diameter is 60 mm. The camera 8 uses a high-definition camera with 20 million pixels and a 220° wide angle. The light source 11 uses a vertical downward linear light source. When specifically detecting the underground water flow velocity and direction, first place the integrated monitor of this embodiment in the corresponding water layer. Under the action of water power, the suspension needle 7 deflects towards the water flow direction. Under the illumination of the top light source 11, the suspension needle 7 casts a shadow on the lower dial 4, as shown in the appendix Figure 10 As shown, at this time, a photo of the dial 4 is obtained through the camera 8 and sent to an externally received computer through the controller 9 and the data line 10. The shadow length L is directly read, and the angle deflected relative to the 0 azimuth is α. Since the orientation of the 0 azimuth can be known in advance, therefore, the water flow direction of the underground water can be obtained through α; and the shadow length L can be calculated according to the empirical formula V = kL to obtain the water flow velocity, where the size of L can be directly read through the radial distance scale line 6 on the dial 4, and k is a constant, which is obtained through repeated experiments in the laboratory. The constant k is related to the diameter and self-weight of the suspension needle 7. It can be seen that the larger L is, the faster the water power is, and the smaller L is, the slower the water flow is; in addition, the integrated monitor of this embodiment can also continuously obtain two variables L and α through the camera 8 to achieve real-time on-line monitoring. With the assistance of software, it can more intuitively display the real-time dynamics of the underground water flow velocity and direction.

[0058] A further embodiment is as shown in the appendix Figure 1-9 As shown, a splicing rod 15 is connected to the top of the housing 1. After the splicing rods 15 are connected end to end, they form an integral body with the integrated monitor and are inserted deep into the underground water.

[0059] A further embodiment is as shown in the appendix Figure 1-9As shown, one end of the splicing rod 15 is provided with a threaded connector 18, and the other end is provided with an internal threaded hole 19 that cooperates with the threaded connector 18; a threaded connection hole 13 that cooperates with the threaded connector 18 is provided at the top of the housing 1, and the threaded connection hole 13 is coaxial with the suspension needle 7.

[0060] In this embodiment, the splicing rods 15 are connected through the threaded connectors 18 and internal threaded holes 19 at their heads and tails, and the monitor is also connected to the splicing rod 15 through the threaded connection hole 13 at its top.

[0061] A further embodiment is as shown in the appendix Figure 1-9 As shown, adjacent splicing rods 15 are connected through a connector 20; the connector 20 includes an upper connecting plate 21 and a lower connecting plate 22, the upper connecting plate 21 and the lower connecting plate 22 are connected through a connecting rod 23, and the monitor is arranged between the upper connecting plate 21 and the lower connecting plate 22; an upper through hole 24 is provided at the center of the upper connecting plate 21, the threaded connector 18 at the lower end of the splicing rod 15 passes through the upper through hole 24 and is fixed by a fastening nut 26, a lower through hole 25 is provided at the center of the lower connecting plate 22, and after the internal threaded hole 19 at the upper end of the splicing rod 15 is placed below the lower through hole 25, it is fixed by a fastening screw 27 passing through the lower through hole 25.

[0062] The connector 20 in this embodiment is mainly used to install multiple monitors. Since the monitor itself is small in size and low in strength, it is not suitable to directly set connection points on the monitor. When installing the connector 20, first pass the threaded connector 18 at the lower end of the splicing rod 15 through the upper through hole 24, tighten the fastening nut 26 from the lower side, then place the monitor in the connector 20 and connect it to the extra threaded connector 18; on the lower side, pass the fastening screw 27 through the lower through hole 25 and screw it into the internal threaded hole 19 at the top of the lower splicing rod 15 and tighten it. By analogy, the required number of connectors 20 and monitors can be installed.

[0063] A further embodiment is as shown in the appendix Figure 1-9 As shown, a non-circular sinking groove one 28 coaxial with the upper through hole 24 is provided on the upper side of the upper through hole 24, and a limiting flange one 30 that cooperates with the non-circular sinking groove one 28 is provided at the lower end of the splicing rod 15; a non-circular sinking groove two 29 coaxial with the lower through hole 25 is provided on the lower side of the lower through hole 25, and a limiting flange two 31 that cooperates with the non-circular sinking groove two 29 is provided at the upper end of the splicing rod 15.

[0064] The non-circular sinking groove one 28 and the non-circular sinking groove two 29 in this embodiment can adopt shapes such as an ellipse, a triangle, a polygon or other non-circular structures, and the limiting flange one 30 and the limiting flange two 31 just cooperate with them to realize relative limitation of the splicing rod 15 and the connector 20 and prevent rotation.

[0065] A further embodiment is as shown in the appendixFigure 1-9 As shown, an azimuth positioning line 14 is provided on the outer side of the housing 1, and the 0-azimuth positioning line 14 coincides with the 0-azimuth direction of the azimuth scale line 5; a lower alignment line 16 is provided on the outer side of the bottom of the splicing rod 15, and an upper alignment line 17 is provided on the outer side of the top.

[0066] During assembly of this embodiment, the 0-azimuth positioning line 14 coincides with the 0-azimuth direction of the azimuth scale line 5, and the lower alignment line 16, the upper alignment line 17 on the splicing rod 15 and the 0-azimuth positioning line 14 also need to coincide, so as to directly view the 0-azimuth position on the dial 4 on the ground.

[0067] A further embodiment is as shown in the appendix Figure 1-9 As shown, the camera 8 is provided inside the suspension 2, and the number of cameras 8 is 2.

[0068] This embodiment is provided with 2 cameras 8, and multiple cameras can also be set. When taking pictures, the dial 4 can be photographed from multiple angles to avoid occlusion.

[0069] A further embodiment is as shown in the appendix Figure 1-9 As shown, the suspension needle 7 is connected to the lower part of the housing 1 through a ball head structure. The ball head structure of this embodiment is a conventional ball head structure.

[0070] A further embodiment is as shown in the appendix Figure 1-9 As shown, the ball head structure includes a ball head 12 fixedly connected to the top of the suspension needle 7, a spherical surface groove 32 cooperating with the ball head 12 is provided below the housing 1, and a limit snap ring 33 is provided at the notch of the spherical surface groove 32. The limit snap ring 33 of this embodiment is mainly used to fix the ball head 12 to prevent it from slipping out of the spherical surface groove 32.

[0071] A further embodiment is as shown in the appendix Figure 1-9 As shown, a rolling ball 34 is provided between the ball head 12 and the spherical surface groove 32.

[0072] When the ball head 12 of this embodiment rotates, there is no direct contact with the spherical surface groove 32. Under the lubrication of the rolling ball 34, the ball head 12 rotates more flexibly.

[0073] As mentioned above, the above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. An on-line monitor for underground water flow velocity and direction, characterized in that: It includes a housing (1). A downward light source (11) and a camera (8) are built in the lower side of the housing (1). The light source (11) and the camera (8) are connected to a controller (9) inside the housing (1) and are connected to an external processing system via a data line (10). A suspension needle (7) is movably connected to the center of the lower side of the housing (1). The suspension needle (7) can freely rotate in any direction and at any angle on the lower side of the housing (1). A suspension (2) is provided on the outer side below the housing (1). A bottom plate (3) is connected below the suspension (2). A dial (4) coaxial with the suspension needle (7) is provided at the center of the bottom plate (3). An annular azimuth scale line (5) and a radial distance scale line (6) are provided on the dial (4).

2. The online monitor for underground water flow velocity and direction according to claim 1, characterized in that: A splicing rod (15) is connected to the top of the housing (1).

3. The online monitor for underground water flow velocity and direction according to claim 2, characterized in that: One end of the splicing rod (15) is provided with a threaded connection head (18), and the other end is provided with an internal thread hole (19) matching the threaded connection head (18); a threaded connection hole (13) matching the threaded connection head (18) is provided at the top of the housing (1), and the threaded connection hole (13) is coaxial with the suspension needle (7).

4. The online monitor for underground water flow velocity and direction according to claim 3, characterized in that: Adjacent splicing rods (15) are connected via a connector (20); the connector (20) includes an upper connecting plate (21) and a lower connecting plate (22). The upper connecting plate (21) and the lower connecting plate (22) are connected via a connecting rod (23). A monitor is provided between the upper connecting plate (21) and the lower connecting plate (22); an upper through hole (24) is provided at the center of the upper connecting plate (21). The threaded connection head (18) at the lower end of the splicing rod (15) passes through the upper through hole (24) and is fixed by a fastening nut (26). A lower through hole (25) is provided at the center of the lower connecting plate (22). After the internal thread hole (19) at the upper end of the splicing rod (15) is placed below the lower through hole (25), it is fixed by a fastening screw (27) passing through the lower through hole (25).

5. The online monitor for underground water flow velocity and direction according to claim 4, wherein: A non-circular sunk groove one (28) coaxial with the upper through hole (24) is provided above the upper through hole (24). A limiting flange one (30) matching the non-circular sunk groove one (28) is provided at the lower end of the splicing rod (15); a non-circular sunk groove two (29) coaxial with the lower through hole (25) is provided below the lower through hole (25). A limiting flange two (31) matching the non-circular sunk groove two (29) is provided at the upper end of the splicing rod (15).

6. The online monitor for underground water flow velocity and direction according to claim 2, wherein: A 0 azimuth positioning line (14) is provided on the outer side of the housing (1), and the 0 azimuth positioning line (14) coincides with the 0 azimuth direction of the azimuth scale line (5); a lower alignment line (16) is provided on the outer side of the bottom of the splicing rod (15), and an upper alignment line (17) is provided on the outer side of the top.

7. The online monitor for underground water flow velocity and direction according to claim 1, characterized in that: The camera (8) is provided inside the suspension (2), and the number of cameras (8) is at least two.

8. The online monitor for underground water flow velocity and direction according to claim 1, wherein: The suspension needle (7) is connected to the lower part of the housing (1) via a ball head structure.

9. The online monitor for underground water flow velocity and direction according to claim 8, characterized in that: The ball head structure includes a ball head (12) fixedly connected to the top of the suspension needle (7). A spherical surface groove (32) matching the ball head (12) is provided below the housing (1), and a limiting snap ring (33) is provided at the notch of the spherical surface groove (32).

10. The online monitor for underground water flow velocity and direction according to claim 9, characterized in that: A ball (34) is provided between the ball head (12) and the spherical surface groove (32).

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