Multifunctional automatic well washing device

Abstract

The present invention provides a multifunctional automatic well-washing device, comprising an automatic gas production device, an automatic dosing system and an automatic well-washing water delivery device, wherein the automatic gas production device comprises a power distribution cabinet, an air compressor and a gas storage tank connected in sequence, the power distribution cabinet is electrically connected to a first PLC control station, the output pipeline of the gas storage tank is connected to the automatic well-washing water delivery device, and the automatic dosing system is connected to the downstream of the output pipeline. The multifunctional automatic well-washing device provided by the present invention is suitable for cleaning water wells of different blockage types, and has multiple functions, strong practicality and high reliability.

Description

Technical Field

[0001] The invention relates to the technical field of well washing, and in particular to a multifunctional automatic well washing device. Background Art

[0002] Well washing is a major step in the in-situ leaching process. As the years of in-situ leaching increase, various physical and chemical reactions will occur in the leaching solution inside the formation. The chemical residues formed in the sandstone pores, gas blockage, attachments, scaling, and sediments on and near the filter in the pumping hole will have a great impact on the actual working capacity of the borehole, greatly reducing the pumping and injection capacity of the process borehole. The purpose of well washing is to restore and improve the natural characteristics of the aquifer, so that a good artificial or natural filter layer is formed around the filter pipe, thereby increasing the permeability around the filter pipe and enabling the well to achieve the desired stable water output and service life.

[0003] Well washing methods mainly include physical well washing and chemical well washing methods. The physical method uses mechanical force to flush and clean the blockages in the borehole filter and the pores of the nearby formations. The chemical well washing uses chemical reagents to react with the mud skin and the sediment in the formation pores to dissolve them and bring them to the surface by pumping water. It needs to be used in combination with physical well washing. Well washing methods for different purposes and hydrogeological conditions include compressed air well washing, high-pressure jet well washing, low-frequency pulse well washing, high-pressure air well washing, piston well washing, chemical well washing, CO 2 Well washing, foam well washing and other technologies, these methods have their own advantages and disadvantages, and also have certain applicable conditions and restrictions.

[0004] In view of the characteristics of low pressure head and deep water level in the mineral-bearing aquifer of the Nalinggou deposit, it is difficult to achieve ideal results by adopting a single well-washing method. Therefore, a multifunctional automatic hole-washing device was developed. It has important practical significance to improve well-washing efficiency, reduce the burden on staff, improve work efficiency, reduce the frequency of well-washing, promote the upgrading of drilling and well-washing technology, and reduce the cost of well-washing. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects described in the prior art, thereby providing a multifunctional automatic well-washing device, which is suitable for cleaning water wells of different blockage types and has multiple functions, strong practicality and high reliability.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A multifunctional automated well-washing device comprises an automated gas production device, an automated dosing system and an automated well-washing water delivery device, wherein the automated gas production device comprises a power distribution cabinet, an air compressor and a gas storage tank which are connected in sequence, the power distribution cabinet is electrically connected to a first PLC control station, the output pipeline of the gas storage tank is connected to the automated well-washing water delivery device, and the automated dosing system is connected to the downstream of the output pipeline.

[0008] As an implementable manner, a first pressure transmitter is provided between the air compressor and the air storage tank.

[0009] As an implementable manner, two first electric ball valves and a second electric ball valve are provided in parallel upstream of the output pipeline.

[0010] As an implementable manner, a second pressure transmitter is also provided on the output pipeline.

[0011] As an practicable manner, a safety valve is connected to the gas storage tank.

[0012] As an implementable manner, the automated controlled dosing system includes a first reagent barrel, a second reagent barrel and a third reagent barrel, the first reagent barrel is connected to a first pipeline, the second reagent barrel is connected to a second pipeline, the third reagent barrel is connected to a third pipeline, the first pipeline, the second pipeline and the third pipeline are connected to a dosing system output pipeline, and the dosing system output pipeline is connected downstream of the output pipeline.

[0013] As an implementable manner, a first solenoid valve is provided on the first pipeline, a second solenoid valve is provided on the second pipeline, and a third solenoid valve is provided on the third pipeline.

[0014] As an implementable manner, a flow meter, a chemical pump and a first electric valve are provided on the output pipeline of the dosing system, and the flow meter, the chemical pump and the first electric valve are electrically connected to a second PLC control station.

[0015] As an implementable manner, the automatic control well-washing water delivery device includes a water storage tank, an electromagnetic flowmeter, a second electric valve and a sewage pump which are connected in sequence.

[0016] As an implementable manner, a liquid level meter is connected to the water storage tank, and the electromagnetic flowmeter and the sewage pump are electrically connected to the first PLC control station.

[0017] Compared with the prior art, the multifunctional automatic well washing device provided by the present invention has the following beneficial effects:

[0018] The multifunctional automated well-washing device provided by the present invention comprises an automated gas production device, an automated dosing system and an automated well-washing water delivery device. The automated gas production device is provided to realize the vibration well-washing of a high-pressure gas storage tank. The output pipeline of the gas storage tank is connected to the automated well-washing water delivery device. The automated dosing system is connected to the downstream of the output pipeline. The device has multiple functions of well-washing with an air compressor, well-washing with a chemical and well-washing with a gas piston. Any well-washing method can be selected to be suitable for cleaning wells of different blockage types. The automated control of the well-washing process is realized by adding a first PLC control station. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 1 A schematic diagram of a multifunctional automated well-washing device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0021] Although the multifunctional automatic well-washing device of the present invention can be implemented in a variety of different ways, the exemplary embodiments will be described in detail herein in conjunction with the accompanying drawings. It is understood that the description herein should be considered as an example of the structure of the multifunctional automatic well-washing device, and is not intended to limit the protection scope of the present invention to the exemplary embodiments. Therefore, in essence, the drawings and the description of the specific embodiments should be considered to be used to illustrate rather than limit the present invention.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", etc. herein indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] The following is further explained in detail through specific implementation methods.

[0024] like Figure 1As shown, the present invention provides a multifunctional automatic well washing device, including an automatic control gas production device 1, an automatic control dosing system 2 and an automatic control well washing water delivery device 3. The automatic control gas production device 1 includes an electrically connected power distribution cabinet 1-1, an air compressor 1-2 and a gas storage tank 1-3. The power distribution cabinet 1-1 is connected to the air compressor 1-2, and the function of the power distribution cabinet 1-1 is to control the start and stop of the air compressor 1-2. The air compressor 1-2 is connected to the gas storage tank 1-3, and its function is to store compressed gas. The power distribution cabinet 1-1 is electrically connected to the first PLC control station 1-6. The gas storage tank 1-3 has an output pipeline 1-10, and the output pipeline 1-10 is divided into an upstream and a downstream. The upstream connection port of the output pipeline 1-10 is installed to the gas storage tank 1-3, and the downstream connection port is installed to the automatic control well washing water delivery device 3. The pipeline of the automatic control dosing system 2 is connected to the downstream part of the output pipeline 1-10.

[0025] The automatic control gas production device 1 also includes a first pressure transmitter 1-4, a first electric ball valve 1-7, a second electric ball valve 1-8 and a safety valve 1-9. The first pressure transmitter 1-4 is installed between the air compressor 1-2 and the gas storage tank 1-3. The first pressure transmitter 1-4 can monitor the outlet pressure of the air compressor 1-2 and control the start and stop of the air compressor 1-2. Two parallel first electric ball valves 1-7 and second electric ball valves 1-8 are installed in the upstream part of the output pipeline 1-10, that is, the branch where the first electric ball valve 1-7 is located and the branch where the second electric ball valve 1-8 is located are connected in parallel. When the first electric ball valve 1-7 and the second electric ball valve 1-8 are both opened, the gas in the gas storage tank 1-3 can be divided into two paths through the first electric ball valve 1-7 and the second electric ball valve 1-8 and then converge together, and then continue to flow in the output pipeline 1-10. Preferably, an additional branch with a stop valve is connected in parallel to the branch where the first electric ball valve 1-7 and the second electric ball valve 1-8 are located. A stop valve is installed on the front pipeline of the three branches, and a second pressure transmitter 1-5, a check valve and an electric actuator are installed in sequence on the rear pipeline.

[0026] Preferably, the gas storage tank 1-3 is connected with a safety valve 1-9, which has the function of protecting the gas storage tank 1-3 at a safe pressure and automatically exhausting the gas when overpressure occurs.

[0027] The first PLC control station 1-6 is connected to the power distribution cabinet 1-1, the first pressure transmitter 1-4, the second pressure transmitter 1-5, the first electric ball valve 1-7, and the second electric ball valve 1-8, and its function is to collect signals and issue control commands.

[0028] The automated controlled dosing system 2 includes three reagent barrels, namely the first reagent barrel 2-1 (water), the second reagent barrel 2-2 (hydrogen peroxide) and the third reagent barrel 2-3 (hydrochloric acid). The first reagent barrel 2-1 has a first pipeline, the second reagent barrel 2-2 has a second pipeline, and the third reagent barrel 2-3 has a third pipeline. The three pipelines are arranged in parallel and connected to a connection point, that is, they are all connected to the entrance of the dosing system output pipeline 2-14. The outlet of the dosing system output pipeline 2-14 is connected to the downstream position of the output pipeline 1-10. Further, the first pipeline is provided with a first solenoid valve 2-4, the second pipeline is provided with a second solenoid valve 2-5, and the third pipeline is provided with a third solenoid valve 2-6, and the outflow of chemical reagents is realized by the opening and closing states of the solenoid valves. The first reagent barrel 2-1 is connected to a first liquid level meter 2-7, the second reagent barrel 2-2 is connected to a second liquid level meter 2-8, and the third reagent barrel 2-3 is connected to a third liquid level meter 2-9. Liquid level meters are provided for the three reagent barrels to monitor the liquid levels of the reagent barrels, so as to facilitate actual operations.

[0029] The dosing system output pipeline 2-14 is also provided with a flow meter 2-10, a chemical pump 2-11, a check valve, and a first electric valve 2-12 in sequence. The flow meter 2-10 is electrically connected to the second PLC control station 2-13, and its function is to collect real-time data and transmit it to the PLC. The second PLC control station 2-13 is also electrically connected to the chemical pump 2-11 and the first electric valve 2-12, and its function is to control the start and stop of the chemical pump 2-11 and the opening and closing of the first electric valve 2-12.

[0030] The automatic control well-washing water delivery device 3 includes a water storage tank 3-1, an electromagnetic flowmeter 3-5, a second electric valve 3-4 and a sewage pump 3-6 which are connected in sequence. The pipeline of the sewage pump 3-6 is connected to the liquid extraction hole. The water storage tank 3-1 is connected to a liquid level meter 3-2, which is used to monitor the liquid level of the water storage tank.

[0031] The output pipeline 1-10 is provided with a third electric valve 3-3 near the connection position of the automatic control well washing water delivery device 3. The first PLC control station 1-6 is electrically connected to the third electric valve 3-3, the second electric valve 3-4, and the sewage pump 3-6, and its function is to control the opening and closing of each electric valve and the start and stop of the sewage pump.

[0032] The multifunctional automatic well-washing device provided by the present invention realizes signal collection at each key point by adding automatic control elements, and realizes automatic control of the well-washing process by adding PLC hardware and programs. And by adding a touch screen and upper computer programming, the online dynamic display of the well-washing process is realized. By using networking technology, that is, each PLC station is connected to a networking router, and the networking routers are interconnected by WiFi to form an internal local area network. The networking router is different from the common routers on the market. First, it has its own WiFi hotspot and can receive and transmit wireless signals; second, an intranet is formed between the networking routers, which is effectively physically isolated from the commercial network, that is, the commercial network cannot access the subordinate devices connected to the networking router, so as to ensure network security. Therefore, a handheld networking router can realize mobile well washing in various parts of the country.

[0033] The present invention realizes the vibration well washing of high-pressure gas storage tanks. Through the automation technology, the system pressure is collected and the electric valve is controlled to realize the gas storage tank filling - reaching the set pressure - opening the gas storage tank to exhaust - waiting for the gas storage tank pressure to reach the set low pressure - closing the gas storage tank to fill - filling the gas storage tank again to realize the vibration well washing. The intermittent operation mode of the air compressor is realized, which saves electric energy; it gains the groundwater recovery time, increases the air outlet pressure of the well washing air duct (the continuous well washing pressure of the air compressor is 2.2Mpa, and the intermittent well washing pressure can be increased to 5.0Mpa), and increases the well washing force.

[0034] The present invention realizes signal collection at each key point by adding automatic control elements (electric valve, pressure transmitter, liquid level meter, flow meter) and the like, and realizes automatic control of the well washing process by adding PLC hardware and program.

[0035] Multiple well-washing modes for selection: Different well-washing processes are selected for different reasons for borehole blockage. The system includes three modes, and there is a progressive relationship between the modes, and the well-washing intensity increases step by step. The air compressor well-washing mode is suitable for cleaning boreholes with physical blockage, the air compressor + chemical combined well-washing mode is suitable for drilling holes with chemical blockage, and the air compressor + chemical + gas piston combined well-washing mode is suitable for cleaning drilling holes with complex and stubborn blockage reasons.

[0036] A variety of well-washing operations are available: The system realizes local manual, local automatic, remote manual, remote full-automatic (one-button start and stop), and national mobile control of various well-washing methods, and sets priorities.

[0037] External well-washing process: Through upper computer programming, the well-washing process is realized by self-checking first → initializing the equipment status → operating one by one according to the process → ending. During the process, the color of the equipment changes accordingly to which step the program is executed, so that the well-washing status can be clearly judged, which is also helpful for fault analysis.

[0038] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A multifunctional automatic well washing device, characterized in that: The invention comprises an automated controlled gas production device (1), an automated controlled dosing system (2) and an automated controlled well-washing water delivery device (3), wherein the automated controlled gas production device (1) comprises a power distribution cabinet (1-1), an air compressor (1-2) and a gas storage tank (1-3) which are connected in sequence, the power distribution cabinet (1-1) is electrically connected to a first PLC control station (1-6), an output pipeline (1-10) of the gas storage tank (1-3) is connected to the automated controlled well-washing water delivery device (3), and the automated controlled dosing system (2) is connected to a first PLC control station (1-6). The downstream of the output pipeline (1-10) is connected; the upstream of the output pipeline (1-10) is provided with two first electric ball valves (1-7) and second electric ball valves (1-8) arranged in parallel, and when the first electric ball valve (1-7) and the second electric ball valve (1-8) are both opened, the gas in the gas storage tank (1-3) can be divided into two paths and pass through the first electric ball valve (1-7) and the second electric ball valve (1-8) and then converge together, and then continue to flow in the output pipeline (1-10); The automated controlled dosing system (2) comprises a first reagent barrel (2-1), a second reagent barrel (2-2) and a third reagent barrel (2-3); the first reagent barrel (2-1) is connected to a first pipeline, the second reagent barrel (2-2) is connected to a second pipeline, the third reagent barrel (2-3) is connected to a third pipeline, the first pipeline, the second pipeline and the third pipeline are connected to a dosing system output pipeline (2-14), and the dosing system output pipeline (2-14) is connected to the downstream of the output pipeline (1-10); a first solenoid valve (2-4) is provided on the first pipeline, a second solenoid valve (2-5) is provided on the second pipeline, and a third solenoid valve (2-6) is provided on the third pipeline; and the well washing is achieved by filling the gas tank - reaching a set pressure - opening the gas tank to exhaust - waiting for the gas tank pressure to reach a set low pressure - closing the gas tank to fill - and filling the gas tank again.

2. The multifunctional automatic well washing device according to claim 1, characterized in that: A first pressure transmitter (1-4) is provided between the air compressor (1-2) and the air storage tank (1-3).

3. The multifunctional automatic well washing device according to claim 1, characterized in that: The output pipeline (1-10) is also provided with a second pressure transmitter (1-5).

4. The multifunctional automatic well washing device according to claim 1, characterized in that: The gas storage tank (1-3) is connected to a safety valve (1-9).

5. The multifunctional automatic well washing device according to claim 1, characterized in that: A flow meter (2-10), a chemical pump (2-11) and a first electric valve (2-12) are provided on the dosing system output pipeline (2-14); the flow meter (2-10), the chemical pump (2-11) and the first electric valve (2-12) are electrically connected to a second PLC control station (2-13).

6. The multifunctional automatic well washing device according to claim 1, characterized in that: The automated controlled well-washing water delivery device (3) comprises a water storage tank (3-1), an electromagnetic flow meter (3-5), a second electric valve (3-4) and a sewage pump (3-6) which are connected in sequence.

7. The multifunctional automatic well washing device according to claim 6, characterized in that: The water storage tank (3-1) is connected to a liquid level meter (3-2), and the electromagnetic flow meter (3-5) and the sewage pump (3-6) are electrically connected to the first PLC control station (1-6).

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