A water source well water level monitoring system

Abstract

The invention discloses a water level monitoring system for a water source well, comprising a monitoring device, a radio frequency admittance device, a water quality detection device, a water source well and a submersible pump, wherein the submersible pump is installed below the water source well, the submersible pump is connected to the monitoring device, the water quality detection device is installed in the water source well, the water quality detection device is used to detect whether the water source well is blocked, the water quality detection device is connected to the monitoring device, the radio frequency admittance device is installed on the well wall of the water source well, the radio frequency admittance device is used to detect the water level of the water source well, and the radio frequency admittance device is connected to the monitoring device; the radio frequency admittance sensor probe and the radio frequency admittance transmitter probe of the invention constitute an electrolytic capacitor, the height of the water level is measured according to the change of the capacitance value, and the real-time monitoring of the water level of the water source well is realized, and combined with the monitoring device, the purpose of stopping the pump at a low liquid level and automatically starting the pump at a high liquid level is realized, and the phenomenon of empty pumping and dry burning of the water source well and the like is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of water source wells, and in particular to a water source well water level monitoring system. Background Art

[0002] The liquid level of water source wells ranges from tens of meters to hundreds of meters, and the current status of water source wells in various oil production plants is similar. The traditional method of measuring water level is mostly to put diffused silicon piezoresistive core or ceramic piezoresistive core pressure sensor into the water bottom, and indirectly measure the water level through pressure changes. The deepest water level can only be measured up to 150m; when the water level is deeper, the diaphragm of the pressure sensor is easily damaged and cannot be used, and the sealing of the sensor is difficult to solve the leakage, and the error of measuring the water level is getting bigger and bigger. This method obviously cannot meet the requirements of measuring the deep water level of water source wells.

[0003] Other water level measurement methods can only measure water levels up to 25m using radar and up to 20m using radio frequency capacitance, which are far from meeting the requirements for monitoring the water level in water source wells.

[0004] At the same time, current water source wells are prone to the problem of silt clogging the filter holes of the well pipe. Once too many filter holes are blocked, the water transported by the submersible pump will contain more silt, resulting in poor water quality. Existing technology makes it difficult to effectively monitor the blockage of the filter holes.

[0005] For example, a "deep water level monitoring system for a water source well" disclosed in a Chinese patent document, with a publication number of CN204462875U and an application date of December 31, 2014, includes a deep water level monitoring device and a monitoring server; the deep water level monitoring device further includes a sensor, a communication unit, a radio frequency admittance level transmitter, an RF voltage follower, and an anti-adhesion protective cover; the radio frequency admittance level transmitter is connected to the sensor, the anti-adhesion protective cover wraps a part of the sensor, the RF voltage follower is connected between the radio frequency admittance level transmitter and the anti-adhesion protective cover, and the radio frequency admittance level transmitter is also connected to the pipe wall of the water source well; the sensor is used to monitor the condition of water in the water source well, and to feed back water information to the monitoring server through the communication unit; the monitoring server controls the submersible pump in the water source well to pump water or stop according to the water information. Although the water level monitoring system of the application can detect water level changes to a certain extent, it is unable to understand whether the low water level in the water source well is caused by the blockage of the water filter holes or the decrease of groundwater, and is unable to detect the cause of the water level change. Summary of the invention

[0006] The present invention mainly solves the problem that the existing technology cannot detect the water level change of the water source well and the reason for the change; it provides a water source well water level monitoring system, which monitors the water level information of the water source well in real time, further detects the water filter holes of the well pipe, detects the reason for the water level change, and facilitates the maintenance and normal operation of the water source well.

[0007] The above technical problems of the present invention are mainly solved by the following technical solutions: a water source well water level monitoring system, including a monitoring device, a radio frequency admittance device, a water quality detection device, a water source well and a submersible pump, wherein the submersible pump is installed below the water source well, the submersible pump is connected to the monitoring device, the water quality detection device is installed in the water source well, the water quality detection device is used to detect whether the water source well is blocked, the water quality detection device is connected to the monitoring device, the radio frequency admittance device is installed on the wall of the water source well, the radio frequency admittance device is used to detect the water level of the water source well, and the radio frequency admittance device is connected to the monitoring device. The deep water level is detected by the radio frequency admittance device. When the water level is too low, the submersible pump is controlled to stop working by the monitoring device to prevent the water source well from empty pumping and dry burning. The blockage of the water filter hole of the water source well is detected by the water quality detection device to judge whether the low water level of the water source well is caused by insufficient groundwater or by the blockage of the water filter hole by sediment and other materials, so as to facilitate the effective maintenance of the water source well.

[0008] Preferably, the water source well comprises an outer well pipe and an inner well pipe, the outer well pipe comprises an upper well pipe and a lower well pipe, the inner walls on both sides of the lower end of the upper well pipe are provided with slots, the outer walls on both sides of the upper end of the lower well pipe are provided with bumps, the upper well pipe and the lower well pipe are connected by the slots and bumps, the inner well pipe is connected to the first end of the water quality detection device, the second end of the water quality detection device is connected to the lower well pipe, and the submersible pump is installed in the inner well pipe. When groundwater is extracted by the submersible pump, the lower well pipe will float up and down with the water flow, which is convenient for the water quality detection device to detect the blockage of the water filter hole.

[0009] Preferably, the water quality detection device comprises a base, a first connecting rod, a second connecting rod and an acceleration sensor, wherein the acceleration sensor is installed in the base, and the acceleration sensor is used to detect the acceleration information of the base, and the acceleration sensor is connected to the monitoring device, one end of the first connecting rod is connected to the acceleration sensor, the other end of the first connecting rod passes through the base and is connected to the lower well pipe, one end of the second connecting rod is fixedly connected to the base, and the other end of the second connecting rod is fixedly connected to the inner well pipe. When water flows through the lower well pipe, it drives the lower well pipe to move, and the lower well pipe drives the acceleration sensor to move, so that the acceleration sensor detects the acceleration information of the lower well pipe, determines the flow rate of water flowing through the lower well pipe, and then determines the blockage of its water filter hole.

[0010] Preferably, the size of the protrusion is ≤3 / 4 of the size of the slot, so that the protrusion on the downhole pipe can be easily moved in the slot.

[0011] Preferably, the lower well pipe is provided with a plurality of water filter holes, and the inner well pipe is provided with a plurality of water inlets. A rotating shaft is installed in the water filter holes and the water inlets, a water filter block is installed on the rotating shaft, a through hole is opened in the middle of the water filter block, and the through hole is truncated. The rotating shaft is connected to a motor, and the motor is connected to a monitoring device. Water enters the outer well pipe from the water filter hole. When the larger side of the through hole of the water filter block faces inward and the smaller side of the through hole faces outward, it plays a role in filtering water quality. When the smaller side of the through hole of the water filter block faces inward and the larger side of the through hole faces outward, water can flow through the water filter block more quickly. Under normal circumstances, the water filter block in the water filter hole of the lower well pipe plays a role in filtering water, and the water filter block of the inner well pipe plays a role in diversion and secondary water filtering. When the water filter hole of the lower well pipe is seriously clogged, the electric motor connected to the rotating shaft in the water filter hole of the lower well pipe is started. The machine turns the water filter block over so that the side with the larger through hole faces outward. When water flows through, the blockage is flushed away. At the same time, the motor connected to the rotating shaft inside the water inlet of the inner well pipe is started to turn the water filter block inside so that the side with the smaller through hole faces outward, thereby filtering water. When the blockage is unblocked in the water filter hole of the lower well pipe, the inner well pipe is used to filter water at the same time. While ensuring the water quality, it prevents the water filter hole from being blocked by blockages such as mud and sand, thereby increasing the service life of the water source well and reducing the cost of manual maintenance.

[0012] Preferably, it also includes a water outlet pipe, which is connected to the submersible pump. The radio frequency admittance device includes a radio frequency admittance transmitter probe and a plurality of radio frequency admittance sensor probes. The radio frequency admittance transmitter probe is in the shape of a long strip. The radio frequency admittance transmitter probe extends in the up and down directions and is installed on the inner wall of the water source well. A plurality of radio frequency admittance sensor probes are installed on the water outlet pipe at equal intervals. The radio frequency admittance transmitter probe, the radio frequency admittance sensor probe and water form an electrolytic capacitor. The radio frequency admittance transmitter probe and the plurality of radio frequency admittance sensor probes are connected to the monitoring device through cables. The RF admittance sensor probe and the RF admittance transmitter probe constitute an electrolytic capacitor, in which the RF admittance sensor probe is the positive electrode of the electrolytic capacitor, and the RF admittance transmitter probe is the negative electrode of the electrolytic capacitor. Water serves as the electrolyte. When the height of the electrolyte water changes, that is, when the water level of the water source well changes, the capacitance value also changes. The water level is measured according to the change in the capacitance value, and the real-time monitoring of the water level of the water source well is realized. Combined with the monitoring device, the purpose of stopping the pump at low liquid level and automatically starting the pump at high liquid level is achieved, avoiding the phenomenon of empty pumping and dry burning of the water source well.

[0013] Preferably, the monitoring device comprises a cabinet, a display screen, an MCU and a power supply module, wherein the MCU and the power supply module are both installed in the cabinet, the display screen is installed on the cabinet, the display screen is connected to the MCU, the power supply module supplies power to the MCU, a ventilation hole is provided on one side of the cabinet, a rain cover is installed on the upper end of the cabinet, and a plurality of buttons are provided on the cabinet, and the plurality of buttons are connected to the MCU. The water level in the water source well and the blockage of the water filter hole can be displayed clearly through the display screen.

[0014] As an advantage, it also includes a plurality of annular connecting pieces, through which the inner well pipe and the upper well pipe are connected. The annular connecting piece is an annular steel piece, which fixedly connects the inner well pipe and the upper well pipe.

[0015] The beneficial effects of the present invention are as follows: (1) an electrolytic capacitor is formed by a radio frequency admittance sensor probe and a radio frequency admittance transmitter probe, and the water level is measured according to the change of the capacitance value, thereby realizing real-time monitoring of the water level of the water source well. Combined with the monitoring device, the purpose of stopping the pump at a low liquid level and automatically starting the pump at a high liquid level is realized, thereby avoiding the phenomenon of empty pumping and dry burning of the water source well; (2) the flow rate of water flowing through the well pipe is judged by the water quality detection device, and then the blockage condition of the water filter hole is judged; (3) a water filter block is set in the water filter hole and the water inlet, so that the blockage can be automatically cleaned and the water filtering effect can still be achieved during the cleaning process, and the water source well can work normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the water source well water level monitoring system of Example 1.

[0017] Figure 2 It is a structural schematic diagram of the water quality detection device of Example 1.

[0018] Figure 3 It is a schematic diagram of the structure of the water filter block of the first embodiment.

[0019] Figure 4 It is a structural schematic diagram of the water quality detection device of the second embodiment.

[0020] In the figure, 1. monitoring device, 2. RF admittance transmitter probe, 3. RF admittance sensor probe, 4. manhole cover, 5. upper well pipe, 6. lower well pipe, 7. inner well pipe, 8. outlet pipe, 9. annular steel sheet, 10. submersible pump, 11. water quality detection device, 12. slot, 13. convex block, 14. water filter hole, 15. water inlet, 16. base, 17. first connecting rod, 18. second connecting rod, 19. acceleration sensor, 20. rotating shaft, 21. water filter block, 22. through hole, 23. closed box, 24. movable plate, 25. airbag, 26. air pipe, 27. air hole, 28. pressure gauge. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0022] Embodiment 1: A water source well water level monitoring system, such as Figure 1 As shown, it includes a monitoring device 1, a radio frequency admittance device, a water quality detection device 11, a water source well, a water outlet pipe 8, a manhole cover 4 and a submersible pump 10. The submersible pump 10 is installed below the water source well, the submersible pump 10 is connected to the monitoring device 1, the water quality detection device 11 is installed in the water source well, the water quality detection device 11 is used to detect whether the water source well is blocked, the water quality detection device 11 is connected to the monitoring device 1, the radio frequency admittance device is installed on the wall of the water source well, the radio frequency admittance device is used to detect the water level of the water source well, the radio frequency admittance device is connected to the monitoring device 1, the water outlet pipe 8 is connected to the submersible pump 10, and the manhole cover 4 is installed at the upper end of the water source well.

[0023] The water source well includes an outer well pipe and an inner well pipe 7, the outer well pipe includes an upper well pipe 5 and a lower well pipe 6, the inner walls on both sides of the lower end of the upper well pipe 5 are provided with clamping grooves 12, and the outer walls on both sides of the upper end of the lower well pipe 6 are installed with protrusions 13, the upper well pipe 5 and the lower well pipe 6 are clamped together by the clamping grooves 12 and the protrusions 13, the inner well pipe 7 is connected to the first end of the water quality detection device 11, the second end of the water quality detection device 11 is connected to the lower well pipe 6, the inner well pipe 7 is fixedly connected to the upper well pipe 5 by an annular steel sheet 9, the submersible pump 10 is installed in the inner well pipe 7, and the size of the protrusion 13 is ≤3 / 4 of the size of the clamping groove 12.

[0024] like Figure 2 As shown, the water quality detection device 11 includes a base 16, a first connecting rod 17, a second connecting rod 18 and an acceleration sensor 19. The acceleration sensor 19 is installed in the base 16. The acceleration sensor 19 is used to detect the acceleration information of the base 16. The acceleration sensor 19 is connected to the monitoring device 1, one end of the first connecting rod 17 is connected to the acceleration sensor 19, the other end of the first connecting rod 17 passes through the base 16 and is connected to the downhole pipe 6, one end of the second connecting rod 18 is fixedly connected to the base 16, and the other end of the second connecting rod 18 is fixedly connected to the inner well pipe 7.

[0025] like Figure 3 As shown, the lower well pipe 6 is provided with a plurality of water filter holes 14, and the inner well pipe 7 is provided with a plurality of water inlets 15. A rotating shaft 20 is installed in the water filter holes 14 and the water inlets 15. A water filter block 21 is installed on the rotating shaft 20. A through hole 22 is opened in the middle of the water filter block 21. The shape of the through hole 22 is truncated cone. The rotating shaft 20 is connected to a motor, and the motor is connected to the monitoring device 1.

[0026] The RF admittance device includes an RF admittance transmitter probe 2 and several RF admittance sensor probes 3. The RF admittance transmitter probe 2 is in the shape of a long strip. The RF admittance transmitter probe 2 is extended in the up and down directions and installed on the inner wall of the water source well. Several RF admittance sensor probes 3 are evenly spaced and installed on the water outlet pipe 8. The RF admittance transmitter probe 2, the RF admittance sensor probe 3 and water form an electrolytic capacitor. The RF admittance transmitter probe 2 and the several RF admittance sensor probes 3 are connected to the monitoring device 1 through cables.

[0027] The monitoring device 1 includes a cabinet, a display screen, an MCU and a power supply module. The MCU and the power supply module are both installed in the cabinet, the display screen is installed on the cabinet, the display screen is connected to the MCU, the power supply module supplies power to the MCU, ventilation holes are provided on one side of the cabinet, a rain cover is installed on the upper end of the cabinet, and a number of buttons are provided on the cabinet, and the several buttons are all connected to the MCU.

[0028] Embodiment 2, a water source well water level monitoring system, such as Figure 4 As shown, the difference between this embodiment and the first embodiment is that the water quality detection device 11 of this embodiment includes a base 16, a first connecting rod 17, a second connecting rod 18, an air pipe 26, a movable plate 24, an air bag 25, a pressure gauge 28 and a closed box 23, one end of the first connecting rod 17 is connected to the movable plate 24, the other end of the first connecting rod 17 passes through the base 16 and is connected to the lower well pipe 6, one end of the second connecting rod 18 is fixedly connected to the base 16, the other end of the second connecting rod 18 is fixedly connected to the inner well pipe 7, and the second The connecting rod 18 is provided with an air hole 27, one end of the air pipe 26 is connected to the air hole 27 of the second connecting rod 18, and the other end of the air pipe 26 is connected to the air bag 25. The air bag 25 is installed in the sealed box 23, and the sealed box 23 is installed on the water outlet pipe 8. The pressure gauge 28 is installed in the sealed box 23. The pressure gauge 28 is used to detect the pressure information in the air bag 25. The pressure gauge 28 is connected to the monitoring device 1. The air bag 25 and the base 16 are filled with gas. The air bag 25 is a retractable plastic film. The rest of the structure is the same as that of the first embodiment. When water flows in from the lower well pipe, it impacts the lower well pipe, drives the first connecting rod, and makes the first connecting rod drive the movable plate to move. The movable plate compresses the gas in the base, compresses the gas into the air bag through the air hole and the air pipe, and expands the air bag. The pressure gauge detects the pressure in the air bag in real time. According to the pressure change speed detected by the pressure gauge, the speed of the water impacting the lower well pipe is judged, and then the water flow rate is judged.

[0029] In a specific application, four RF admittance sensor probes 3 are installed at equal intervals on the outlet pipe 8, and form an electrolytic capacitor with the RF admittance transmitter probe 2 and water. When the water level in the water source well changes accordingly, the capacitance values ​​formed by the RF admittance sensor probes 3 and the RF admittance transmitter probe 2 at different heights change, and are numbered from top to bottom as the first capacitor, the second capacitor, the third capacitor and the fourth capacitor. When the water level is at the first capacitor, the maximum power of the submersible pump 10 is turned on to pump water, and at the same time, the acceleration sensor 19 detects changes in water flow. When the water level does not change but the water flow changes significantly, it is judged that the water filter hole 14 is more blocked. As the submersible pump 10 continues to pump water at Water is pumped at maximum power, and the water level decreases. When the water level is between the second capacitor and the third capacitor, the submersible pump 10 pumps water at normal power. At the same time, the motor is started to overturn the filter blocks 21 in the filter holes 14 and the water inlet 15, and the blockages in the filter holes 14 are flushed away, allowing the water to quickly enter the lower well pipe 6. At the same time, the water is filtered through the water inlet 15 of the inner well pipe 7 to prevent the water level from continuing to drop. After a period of time, the motor is started again to reset the filter block 21 to keep the water level above the third capacitor; when the water level is at the fourth capacitor, the submersible pump 10 starts pumping water at a low power, and when the water level is below the fourth capacitor, the submersible pump 10 stops working, and at the same time, it is determined that the amount of groundwater in the water source well is insufficient.

[0030] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A water source well water level monitoring system, characterized in that: include: A monitoring device, a radio frequency admittance device, a water quality detection device, a water source well and a submersible pump, wherein the submersible pump is installed below the water source well, the submersible pump is connected to the monitoring device, the water quality detection device is installed in the water source well, the water quality detection device is used to detect whether the water source well is blocked, the water quality detection device is connected to the monitoring device, the radio frequency admittance device is installed on the wall of the water source well, the radio frequency admittance device is used to detect the water level of the water source well, and the radio frequency admittance device is connected to the monitoring device; The water source well comprises an outer well pipe and an inner well pipe, the outer well pipe comprises an upper well pipe and a lower well pipe, the inner walls on both sides of the lower end of the upper well pipe are provided with clamping grooves, the outer walls on both sides of the upper end of the lower well pipe are provided with protrusions, the upper well pipe and the lower well pipe are clamped together by the clamping grooves and the protrusions, the inner well pipe is connected to the first end of the water quality detection device, the second end of the water quality detection device is connected to the lower well pipe, and the submersible pump is installed in the inner well pipe; The water quality detection device comprises a base, a first connecting rod, a second connecting rod, an air pipe, a movable plate, an air bag, a pressure gauge and a closed box, one end of the first connecting rod is connected to the movable plate, the other end of the first connecting rod passes through the base and is connected to the downhole pipe, one end of the second connecting rod is fixedly connected to the base, the other end of the second connecting rod is fixedly connected to the inner well pipe, the second connecting rod is provided with an air hole, one end of the air pipe is connected to the air hole of the second connecting rod, the other end of the air pipe is connected to the air bag, the air bag is installed in the closed box, the closed box is installed on the water outlet pipe, the pressure gauge is installed in the closed box, the pressure gauge is used to detect the pressure information in the air bag, the pressure gauge is connected to the monitoring device, the air bag and the base are filled with gas, and the air bag is a retractable plastic film; When water flows in from the lower well pipe, it impacts the lower well pipe, driving the first connecting rod, so that the first connecting rod drives the movable plate to move, and the movable plate compresses the gas in the base, and compresses the gas into the airbag through the air hole and the air tube, so that the airbag expands. The pressure gauge detects the pressure in the airbag in real time, and judges the speed of the water impacting the lower well pipe according to the pressure change speed detected by the pressure gauge, and then judges the water flow rate.

2. A water source well water level monitoring system according to claim 1, characterized in that: The size of the protrusion is ≤3 / 4 of the size of the card slot.

3. A water source well water level monitoring system according to claim 1, characterized in that: The lower well pipe is provided with a plurality of water filter holes, and the inner well pipe is provided with a plurality of water inlets. A rotating shaft is installed in each of the water filter holes and the water inlets, and a water filter block is installed on the rotating shaft. A through hole is opened in the middle of the water filter block, and the shape of the through hole is truncated cone. The rotating shaft is connected to a motor, and the motor is connected to a monitoring device.

4. A water source well water level monitoring system according to claim 1, characterized in that: It also includes a water outlet pipe, which is connected to a submersible pump. The radio frequency admittance device includes a radio frequency admittance transmitter probe and a plurality of radio frequency admittance sensor probes. The radio frequency admittance transmitter probe is in the shape of a long strip. The radio frequency admittance transmitter probe is extended in the up and down directions and installed on the inner wall of the water source well. A plurality of radio frequency admittance sensor probes are installed on the water outlet pipe at equal intervals. The radio frequency admittance transmitter probe, the radio frequency admittance sensor probe and water form an electrolytic capacitor. The radio frequency admittance transmitter probe and the plurality of radio frequency admittance sensor probes are connected to a monitoring device via cables.

5. A water source well water level monitoring system according to claim 1, characterized in that: The monitoring device includes a cabinet, a display screen, an MCU and a power supply module. The MCU and the power supply module are both installed in the cabinet, the display screen is installed on the cabinet, the display screen is connected to the MCU, the power supply module supplies power to the MCU, ventilation holes are provided on one side of the cabinet, a rain cover is installed on the upper end of the cabinet, and a number of buttons are provided on the cabinet, and the several buttons are all connected to the MCU.

6. A water source well water level monitoring system according to claim 1, characterized in that: It also includes a plurality of annular connecting pieces, and the inner well pipe and the upper well pipe are connected through the annular connecting pieces.

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