Deep well self-repairing device and repairing method

Abstract

The invention relates to a deep well self-repairing device which comprises a bottom supporting frame and an underwater motor connected with the bottom supporting frame, an output shaft of the underwater motor faces the bottom supporting frame and is located in the supporting frame, and rotating fan blades are installed on the output shaft of the underwater motor. The upper end of a machine body of the underwater motor is connected with a water inlet end of a sand pump through a connecting rod, a water outlet pipe of the sand pump is connected with a water feeding pipeline, a tee joint is installed on the portion, located on the ground, of the water feeding pipeline, one path of the tee joint is connected with a sewage discharging pipe, a sewage discharging valve is arranged on the sewage discharging pipe, the other path of the tee joint is connected with a water storage tank, and a water storage valve is arranged on the water storage pipeline. Sediment and water are mixed through vortex strong force, and then through high-pressure suction, the problem existing in a single cleaning mode in the prior art is solved; the control unit adopts a self-adaptive algorithm to optimize energy consumption and reduce operation cost; and the structure is simple, the investment cost is low, the modularized structural design is suitable for different well diameters, and the equipment universality is high.

Description

Technical Field

[0001] The present invention relates to the technical field of deep well maintenance equipment, and particularly to a deep well self-repair device and a repair method. Background Art

[0002] Water wells are drilled in remote areas when tap water is unavailable for fetching water. A water pump is used to pump water from the well into a water storage tank. This method of pumping water with a water pump has certain problems. While sucking water, it also sucks the sediment around the well wall into the wellbore. After using it for a period of time, the sediment gradually raises the bottom of the well, resulting in a shallower well depth and inability to fetch water.

[0003] To solve this problem, the existing methods mainly use a long rod sand fishing device to fish out the sediment, thereby restoring the well depth. This method is very inefficient, and the effect cannot be guaranteed, and there are certain safety hazards.

[0004] There are also some high-pressure cleaning equipment on the market, mainly borrowing the cleaning technology of oil wells, which can improve the cleanliness to a certain extent. However, for the long and narrow space of deep wells and the situation of sediment deposition, it cannot be solved by cleaning. Instead, the well will be scrapped faster with more cleaning.

[0005] Through retrieval, patent CN202022280944.2 discloses a deep well water quality improvement system for a water source, including an underground panoramic detector, a deep well cleaning device, a deep well repair component, and a deep well water quality purification system; the deep well cleaning device includes a high-pressure water pump I, a cleaning component, and a well sediment scavenger. The cleaning component includes a support rod, a brush barrel arranged around the support rod, and steel brush strips arranged on the brush barrel. The support rod is a hollow pipe, and a water pumping pipeline, a water supply pipeline, and a sediment scavenger delivery pipeline are arranged inside. The deep well water quality purification system includes an industrial water tank, an industrial water pump, a domestic water tank, a water quality filtration component, a well water cleaning device, a reverse osmosis device, and a high-pressure water pump II.

[0006] In the method adopted by this patent, a high-pressure water pump, a sediment scavenger, and a cleaning component are used. The structure is complex and the operation is troublesome, and it is also difficult to implement in actual use. The cost of drilling a deep well is more than 100,000, and the maintenance cost is 50,000 each time, and it cannot guarantee how long it can be used. This may force the deep well to be retired in advance, resulting in waste of resources. Therefore, enterprises urgently need a solution in production and life that is specially designed for deep wells, can clean sediment efficiently and safely, and keep the deep well in normal use. Summary of the Invention

[0007] In view of the above problems existing in the prior art, the main object of the present invention is to provide a self-repairing device and a repair method for deep wells. The device has the characteristics of simple operation, high working efficiency and low equipment investment. The repair method is simple and effective, which can greatly improve production efficiency and economic benefits, and plays a very positive role in the development of enterprises and society.

[0008] To achieve the above object, the technical solution adopted by the present invention is: a self-repairing device for deep wells, including a bottom support frame, an underwater motor connected to the bottom support frame, the output shaft of the underwater motor facing the bottom support frame and located inside the support frame, and a rotating fan blade is installed on the output shaft of the underwater motor; the upper end of the body of the underwater motor is connected to the water inlet end of a sand pump through a connecting rod, the outlet pipe of the sand pump is connected to an upper water pipeline, a tee is installed on the part of the upper water pipeline on the ground, one path of the tee is connected to a sewage discharge pipe, a sewage discharge valve is arranged on the sewage discharge pipe, the other path of the tee is connected to a water storage tank, and a water storage valve is arranged on the water storage pipeline.

[0009] Further, on the water storage pipeline, a water filter is arranged between the water storage valve and the water storage tank.

[0010] Further, the self-repairing device for deep wells further includes a control unit, the control unit is electrically connected to the underwater motor and the sand pump motor, the sewage discharge valve and the water storage valve are solenoid valves, and the control unit is connected to the control ends of the sewage discharge valve and the water storage valve.

[0011] Further, the underwater motor and the sand pump motor are variable-frequency motors; the control unit monitors the voltage and current values of the underwater motor and the sand pump motor in real time, and dynamically adjusts the suction power according to the monitored values.

[0012] Further, the self-repairing device for deep wells further includes an outer cover body, the outer cover body is connected to the upper water pipeline, and the two are covered by the sand pump in the direction of the underwater motor, and the bottom opening end of the outer cover body is higher than the rotating fan blade.

[0013] Further, the rotating fan blade is a turbine fan blade. The turbine fan blade strongly rotates the water body in the well to form a vortex, so that the sediment originally deposited in the well can be suspended.

[0014] Further, for the method of repairing wells using the deep well self-repairing device, for wells that have already become blocked, lower the deep well self-repairing device into the well until it can no longer be lowered. Then, control the underwater motor to rotate and adjust the speed to mix the deposited sediment with the well water to form sediment-laden water. Turn on the sand pump to pump the sediment-laden water, close the water storage valve, open the sewage discharge valve, and discharge the sediment-laden water. After discharging for a set time, stop the operation of the deep well self-repairing device. Lower the deep well self-repairing device further to the set depth. If the set depth has not been reached, repeat the above steps until it can be lowered to the set depth. At this time, fix the pipeline. Then, turn on the underwater motor again, turn on the sand pump, and open the sewage discharge valve until no more sediment-laden water is discharged. Then, turn off the underwater motor and, while closing the sewage discharge valve, open the water storage valve to complete the repair. For wells that have not become blocked or newly built wells, lower the deep well self-repairing device into the well to the set depth. Control the underwater motor to rotate and adjust the speed to mix the deposited sediment with the well water to form sediment-laden water. Turn on the sand pump to pump the sediment-laden water, close the water storage valve, open the sewage discharge valve, and discharge the sediment-laden water. After discharging for a set time, when the sewage discharge pipe no longer discharges sediment-laden water, turn off the underwater motor and, while closing the sewage discharge valve, open the water storage valve to complete the self-repair. After the repair or self-repair is completed, perform self-repair regularly once.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Use eddy currents to strongly mix sediment and water, and then through high-pressure suction, solve the problems existing in the single cleaning mode of the prior art; 2. The control unit uses an adaptive algorithm to optimize energy consumption and reduce operating costs; 3. The structure is simple, the input cost is low, and the modular structure design adapts to different well diameters, with strong equipment versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present invention; Legend: 1. Bottom support frame, 2. Underwater motor, 3. Rotating fan blade, 4. Sand pump, 5. Upper water pipeline, 6. Sewage discharge pipe, 7. Sewage discharge valve, 8. Water storage pipeline, 9. Water storage valve, 10. Water storage tank, 11. Control unit, 12. Outer housing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Embodiment

[0018] As Figure 1The shown deep well self-repairing device includes a bottom support frame 1, an underwater motor 2 connected to the bottom support frame 1. The output shaft of the underwater motor 2 faces the bottom support frame 1 and is located within the support frame 1. A rotating fan blade 3 is installed on the output shaft of the underwater motor 2. The upper end of the body of the underwater motor 2 is connected to the water inlet end of a sand pump 4 through a connecting rod. The outlet pipe of the sand pump 4 is connected to an upper water pipeline 5. A tee joint is installed on the part of the upper water pipeline 5 located on the ground. One path of the tee joint is connected to a sewage discharge pipe 6, and a sewage discharge valve 7 is provided on the sewage discharge pipe 6. The other path of the tee joint is connected to a water storage tank 10, and a water storage valve 9 is provided on the water storage pipeline 8.

[0019] On the water storage pipeline 8, a water filter is provided between the water storage valve 9 and the water storage tank 10.

[0020] A control unit 11, the control unit 11 is electrically connected to the underwater motor 2 and the motor of the sand pump 4. The sewage discharge valve 7 and the water storage valve 9 are solenoid valves, and the control unit 11 is connected to the control ends of the sewage discharge valve 7 and the water storage valve 9.

[0021] The underwater motor 2 and the motor of the sand pump 7 are variable frequency motors; the control unit 11 monitors the voltage and current values of the underwater motor 2 and the motor of the sand pump 4 in real time, and dynamically adjusts the pumping power according to the monitored values.

[0022] An outer cover body 12, the outer cover body 12 is connected to the upper water pipeline, and the two are covered by the sand pump in the direction of the underwater motor 2. The bottom opening end of the outer cover body 12 is higher than the rotating fan blade.

[0023] The rotating fan blade 3 is a turbine fan blade. The turbine fan blade strongly rotates the water body in the well to form a vortex, so that the sediment originally deposited in the well can be suspended.

[0024] In the deep well cleaning operation, first slowly lower the underwater motor 2 and the sand pump 4 into the well until the support frame is close to the silt and dust layer accumulated at the bottom of the well. This step is crucial as it ensures the accuracy and effectiveness of subsequent cleaning work. Once the device is in place, close the water storage valve 9, open the sewage discharge valve 7, and then start the underwater motor 2 and the sand pump 4. The underwater motor 2 drives the turbine fan blade to generate a strong vortex with high-speed rotation, effectively changing the silt and dust at the bottom of the well from a deposited state to a suspended state. This transformation is a key step in the cleaning process as it greatly increases the contact area between the sediment particles and the water flow, creating favorable conditions for subsequent high-pressure pumping operations. Immediately afterwards, the high-pressure sand pump 4 starts to function, using a strong suction force to quickly pump the sediment particles suspended in the water to the tee joint on the ground and discharge them through the sewage pipeline. A filter can be placed at the outlet of the sewage pipeline to separate clear water and sediment, ensuring that only clear water can flow back to the surrounding environment, thus avoiding the risk of secondary pollution.

[0025] The sediment layer at the bottom of the well is gradually cleaned, but the cleaning work doesn't end there. To ensure thorough cleaning, the device needs to be lowered again to a position close to the silt and dust at the bottom of the well, and the above work process is repeated. Although this cyclic process seems simple, it actually contains extremely high technical content and ingenious design concepts. It can not only efficiently clean the sediment in the deep well, but also minimize the damage to the well wall and bottom structure, ensuring the long-term stability and safety of the deep well. Embodiment

[0026] There are the following situations for the method of using the deep well self-repair device in Embodiment 1 for repair: 1. For a well that has been blocked, when the deep well self-repair device is lowered into the well until it can no longer be lowered, control the underwater motor to rotate and adjust the speed so that the deposited sediment is mixed with the well water to form sediment water. Turn on the sand pump to pump the sediment water, close the water storage valve, open the sewage discharge valve, and discharge the sediment water. After discharging for a set time, stop the operation of the deep well self-repair device, continue to lower the deep well self-repair device to the set depth. As long as the set depth has not been reached, continue to repeat the above steps until it can be lowered to the set depth. At this time, the pipeline can be fixed. Then turn on the underwater motor again, turn on the sand pump, open the sewage discharge valve until no more sediment water is discharged, then turn off the underwater motor, and turn on the water storage valve while closing the sewage discharge valve. The repair is completed.

[0027] 2. For a well that has not been blocked or a newly built well, lower the deep well self-repair device into the well to the set depth and fix it, without the need to move it further. Only need to regularly control the underwater motor to rotate and adjust the speed so that the deposited sediment is mixed with the well water to form sediment water. Turn on the sand pump to pump the sediment water, close the water storage valve, open the sewage discharge valve, and discharge the sediment water. After discharging for a set time, when the sewage discharge pipe no longer discharges sediment water, turn off the underwater motor, and turn on the water storage valve while closing the sewage discharge valve to complete the self-repair.

[0028] For deep wells that have been blocked before this application, use Method 1 for repair. For newly built wells or wells that have not been blocked, use Method 2 for self-repair. After the first execution of these two methods, only the self-repair process needs to be regularly executed subsequently. It should be noted that the deep well self-repair device in this embodiment is also a water supply device. It uses a variable frequency motor. When in normal use, it pumps water into the water storage tank, and at this time the output power is relatively small. A filter can also be set on the water storage pipeline 8 to increase the purity of the water in the water storage tank.

[0029] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and 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 deepwater well self-repairing device, characterized in that: The utility model comprises a bottom support frame, an underwater motor connected with the bottom support frame, wherein the output shaft of the underwater motor faces the bottom support frame and is located in the support frame, and a rotating fan blade is installed on the output shaft of the underwater motor; the upper end of the body of the underwater motor is connected to the water inlet end of the sand pump through a connecting rod, the water outlet pipe of the sand pump is connected to the water supply pipeline, a tee is installed on the part of the water supply pipeline located on the ground, one way of the tee is connected to a sewage pipe, a sewage valve is arranged on the sewage pipe, the other way of the tee is connected to a water storage tank, and a water storage valve is arranged on the water storage pipeline.

2. The deepwater well self-repairing device according to claim 1, characterized in that: A water filter is arranged on the water storage pipeline between the water storage valve and the water storage tank.

3. The deepwater well self-repairing device according to claim 1, characterized in that: It also includes a control unit, which is electrically connected to the underwater motor and the sand pump motor. The sewage valve and the water storage valve are solenoid valves, and the control unit is connected to the control ends of the sewage valve and the water storage valve.

4. The deepwater well self-repairing device according to claim 1, characterized in that: The underwater motor and the sand pump motor are variable frequency motors; the control unit monitors the voltage and current values ​​of the underwater motor and the sand pump motor in real time, and dynamically adjusts the suction power according to the monitored values.

5. The deepwater well self-repairing device according to claim 1, characterized in that: The utility model also comprises an outer cover body, which is connected to the water supply pipeline and covers the two in the direction of the underwater motor by the sand pump, and the bottom opening end of the outer cover body is higher than the rotating fan blades.

6. The deepwater well self-repairing device according to claim 1, characterized in that: The rotating blades are turbine blades.

7. The method for repairing a deepwater well self-repairing device according to claim 1, characterized in that: For a well that has been clogged, place the deepwater well self-repairing device into the well until it can no longer be lowered, control the rotation of the underwater motor, adjust the speed, so that the deposited silt is mixed with the well water to form silt water, start the sand pump to pump out the silt water, close the water storage valve, open the sewage valve, and discharge the silt water. After the discharge reaches the set time, stop the deepwater well self-repairing device and continue to lower the deepwater well self-repairing device to the set depth. If the set depth is not reached, continue to repeat the above steps until it can be lowered to the set depth. At this time, fix the pipeline, start the underwater motor again, start the sand pump, and open the sewage valve until it can no longer When discharging the silt water, turn off the underwater motor, close the drain valve and open the water storage valve at the same time, and the repair is completed; for the water wells in use that are not blocked or newly built water wells, place the deep water well self-repair device into the well to the set depth, control the rotation of the underwater motor, adjust the speed so that the deposited silt is mixed with the well water to form silt water, start the sand pump to pump out the silt water, close the water storage valve, open the drain valve, and discharge the silt water. After the set time, the sewage pipe no longer discharges silt water, turn off the underwater motor, close the drain valve and open the water storage valve at the same time, and complete the self-repair; after the repair or self-repair is completed, perform self-repair regularly.

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