Downhole electric control valve system with automatic charging control function and method thereof

Abstract

The invention relates to an underground automatic charging control method which comprises a water return electric adjusting valve, a communication unit and a differential pressure power generation unit, the water return electric adjusting valve is suitable for being arranged on a water return pipeline, the communication unit is in communication connection with the water return electric adjusting valve and controls the opening degree of the water return electric adjusting valve, and the water return electric adjusting valve is suitable for being arranged on the water return pipeline and controls the opening degree of the water return electric adjusting valve. The communication unit is in communication connection with the water return electric adjusting valve and controls the opening and closing degree of the water return electric adjusting valve, the input end of the differential pressure power generation unit is communicated with the water return pipeline, the output end of the differential pressure power generation unit is communicated with the water return pipeline, and the differential pressure power generation unit is electrically connected with the communication unit. The differential pressure power generation unit is arranged to charge the communication unit and the underground battery box, dependence on an external power supply is reduced, the risk that the system cannot operate normally due to faults of the external power supply is reduced, and the independence and reliability of the system are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of downhole water supply and return water control, and particularly relates to a downhole automatic charging control electric regulating valve system and a method thereof. BACKGROUND

[0002] In the downhole operation environment, the effective control of the water supply and return water system is crucial. The traditional downhole electric regulating valve system usually relies on external power supply for power supply to realize the regulation of the opening and closing degree of the valve in the water supply and return water pipeline. However, the downhole environment is complex and changeable, and there are problems such as humidity, dust, narrow space and the like. The wiring and maintenance of the external power supply are difficult, and the power supply is unstable, which not only increases the operation cost and maintenance workload of the system, but also may affect the normal operation of the downhole water supply and return water system due to the power supply problem, thereby adversely affecting the safety and efficiency of the downhole operation. Therefore, there is an urgent need for an electric regulating valve system which can stably operate in the special downhole environment and reduce the dependence on external power supply. SUMMARY

[0003] To solve the problem that the traditional downhole system excessively depends on external power supply, the present application provides a downhole automatic charging control electric regulating valve system, comprising: a return water electric regulating valve, a return water electric regulating valve, a communication unit and a differential pressure power generation unit.

[0004] The return water electric regulating valve is suitable for being arranged on the return water pipeline, the communication unit is in communication connection with the return water electric regulating valve, and the opening and closing degree of the return water electric regulating valve is controlled.

[0005] The return water electric regulating valve is suitable for being arranged on the return water pipeline, the communication unit is in communication connection with the return water electric regulating valve, and the opening and closing degree of the return water electric regulating valve is controlled.

[0006] The input end of the differential pressure power generation unit is in communication with the return water pipeline, the output end is in communication with the return water pipeline, and the differential pressure power generation unit is in electrical connection with the communication unit.

[0007] In a possible implementation manner, the differential pressure power generation unit comprises: a self-powered differential pressure valve and a generator.

[0008] The input end of the self-powered differential pressure valve is in communication with the return water pipeline.

[0009] The input end of the generator is in communication with the self-powered differential pressure valve, the output end is in communication with the return water pipeline, and the generator is in electrical connection with the communication unit to provide electric energy for the communication unit.

[0010] In a possible implementation manner, the differential pressure power generation unit further comprises: an electrically operated on-off valve.

[0011] The electric switch valve is in communication with the output end of the self-operated differential pressure valve;

[0012] The communication unit is in communication with the electric switch valve.

[0013] In a possible implementation, the system further comprises a downhole battery box and a power generation control unit;

[0014] The downhole battery box is electrically connected to the communication unit;

[0015] The input end of the power generation control unit is electrically connected to the differential pressure power generation unit, and the output end is electrically connected to the communication unit.

[0016] In a possible implementation, the downhole battery box is electrically connected to the power generation control unit;

[0017] The communication unit is in communication with the downhole battery box and the electric switch valve.

[0018] 6. A control method using the downhole electrically-controlled valve system with automatic charging control according to claims 1-5, comprising the following steps:

[0019] The differential pressure charging unit converts water pressure potential energy into electrical energy;

[0020] The obtained electrical energy is transmitted to the communication unit;

[0021] The communication unit adjusts the opening and closing degree of the return water pipeline and the return water pipeline.

[0022] In a possible implementation, the differential pressure charging unit converts water pressure potential energy into electrical energy further comprises the following steps:

[0023] The electric switch valve of the differential pressure power generation unit adjusts the water inflow of the input end of the self-operated differential pressure valve;

[0024] The self-operated differential pressure valve of the differential pressure power generation unit stabilizes the water pressure of the water flow;

[0025] The generator of the differential pressure power generation unit converts the water pressure potential energy of the water flow into electrical energy.

[0026] In a possible implementation, the electric switch valve of the differential pressure power generation unit adjusts the water inflow of the input end of the self-operated differential pressure valve further comprises the following steps:

[0027] The water pressure of the input end and the output end of the differential pressure power generation unit is obtained;

[0028] The electrical quantity of the downhole battery box and the communication unit is obtained;

[0029] According to the water pressure of the differential pressure power generation unit at both ends, the power of the downhole battery box and the power of the communication unit, the opening and closing degree of the electrically operated switch valve is adjusted.

[0030] In a possible implementation, the method further includes the following steps:

[0031] The communication unit obtains the power of the downhole battery box.

[0032] The communication unit controls the electric energy converted by the differential pressure charging unit to supply power to the downhole battery box or the communication unit.

[0033] The downhole automatic charging control method of the embodiments of the present application has the following beneficial effects: the existing return water pipeline and return water pipeline are used to set the differential pressure power generation unit to charge the communication unit and the downhole battery box, the dependence on external power supply is reduced, the risk of system failure due to external power supply failure is reduced, and the independence and reliability of the system are improved. Specifically, the communication unit is in communication connection with the return water electric regulating valve arranged on the return water pipeline and the return water electric regulating valve arranged on the return water pipeline, respectively, the opening and closing degree of the return water electric regulating valve and the return water electric regulating valve is adjusted, the input end of the differential pressure power generation unit is communicated with the return water pipeline, the output end is communicated with the return water pipeline, the water pressure potential energy of flowing water is converted into electric energy, and the electric energy is transmitted to the communication unit for use, so as to meet the self-sufficient power supply and control system of the system.

[0034] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and serve to explain the principles of the present application.

[0036] Figure 1 A system connection schematic diagram of the downhole automatic charging control system of the embodiments of the present application is shown;

[0037] Figure 2 A system connection schematic diagram of the differential pressure power generation unit of the embodiments of the present application is shown. DETAILED DESCRIPTION

[0038] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference signs in the drawings represent functionally identical or similar elements. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0039] It should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positions based on the directions or positions shown in the drawings, and are used only for convenience in describing the present application or simplifying the description, and thus cannot be construed as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0040] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0041] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

[0042] In addition, in order to better illustrate the present application, a large number of specific details are given in the specific embodiments below. Those skilled in the art should understand that the present application can also be implemented without some specific details.

[0043] Reference Figures 1-2 An automatic charging control system for downhole includes a water supply electric valve 410, a backwater electric valve 420, a communication unit and a differential pressure power generation unit 100. The water supply electric valve 410 is arranged on a water supply pipeline 210. The communication unit is in communication connection with the water supply electric valve 410 to control the opening and closing degree of the water supply electric valve 410. The backwater electric valve 420 is arranged on a backwater pipeline 220. The communication unit is in communication connection with the backwater electric valve 420 to control the opening and closing degree of the backwater electric valve 220. The input end of the differential pressure power generation unit 100 is in communication with the water supply pipeline 210, and the output end is in communication with the backwater pipeline 220. The differential pressure power generation unit 100 is in electrical connection with the communication unit.

[0044] In this specific embodiment, by using the existing water supply pipeline 210 and backwater pipeline 220, the differential pressure power generation unit 100 is set to charge the communication unit and the downhole battery box 500, reducing the dependence on external power supply, reducing the risk of system failure due to external power failure, and improving the independence and reliability of the system. Specifically, the communication unit is in communication connection with the water supply electrovalve 410 arranged on the water supply pipeline 210 and the backwater electrovalve 420 arranged on the backwater pipeline 220, respectively, and adjusts the opening and closing degree of the water supply electrovalve 410 and the backwater electrovalve 420. The input end of the differential pressure power generation unit 100 is communicated with the water supply pipeline 210, and the output end is communicated with the backwater pipeline 220. The water pressure potential energy of the flowing water is converted into electric energy and transmitted to the communication unit for use, so as to meet the self-sufficient power supply and control system of the system.

[0045] In some examples, the backwater electrovalve, the water supply electrovalve, the communication unit and the differential pressure power generation unit 100, the backwater electrovalve is arranged on the backwater pipeline 220, the communication unit is in communication connection with the backwater electrovalve, controls the opening and closing degree of the backwater electrovalve, the water supply electrovalve is arranged on the water supply pipeline 210, the communication unit is in communication connection with the water supply electrovalve, controls the opening and closing degree of the water supply electrovalve, the input end of the differential pressure power generation unit 100 is communicated with the water supply pipeline 210, and the output end is communicated with the backwater pipeline 220. The differential pressure power generation unit 100 is electrically connected with the communication unit.

[0046] In this specific embodiment, by using the existing water supply pipeline 210 and backwater pipeline 220, the differential pressure power generation unit 100 is set to charge the communication unit and the downhole battery box 500, reducing the dependence on external power supply, reducing the risk of system failure due to external power failure, and improving the independence and reliability of the system. Specifically, the communication unit is in communication connection with the water supply electrovalve and the backwater electrovalve arranged on the backwater pipeline 220, respectively, and adjusts the opening and closing degree of the water supply electrovalve and the backwater electrovalve. The input end of the differential pressure power generation unit 100 is communicated with the water supply pipeline 210, and the output end is communicated with the backwater pipeline 220. The water pressure potential energy of the flowing water is converted into electric energy and transmitted to the communication unit for use, so as to meet the self-sufficient power supply and control system of the system.

[0047] In a specific embodiment, the differential pressure power generation unit 100 comprises: a self-acting differential pressure valve 50 and a generator 60, the input end of the self-acting differential pressure valve 50 is arranged in communication with the water supply pipeline 210, and the water pressure of the water flow can be automatically stabilized to provide stable working conditions for the generator 60. The input end of the generator 60 is arranged in communication with the self-acting differential pressure valve 50, the output end is arranged in communication with the water return pipeline 220, and the generator 60 is electrically connected with the communication unit to provide power for the communication unit. In this way, the presence of the self-acting differential pressure valve 50 ensures the stability of the working environment of the generator 60, improves the power generation efficiency and power quality, thereby ensuring that the communication unit can obtain stable and reliable power supply, and the whole system runs more stably.

[0048] Specifically, the input end of the self-acting differential pressure valve 50 is connected and communicated with any position of the water supply pipeline 210, the output end is connected with the generator 60, and the output end of the generator 60 is connected and communicated with any position of the water return pipeline 220. The flowing water flows through the water supply pipeline 210, the self-acting differential pressure valve 50, the generator 60 and the water return pipeline 220 in turn, and the generator 60 converts the water pressure potential energy into electrical energy to power the communication unit.

[0049] In a specific embodiment, the differential pressure power generation unit 100 further comprises: an electrically operated on-off valve 40, which is arranged in communication with the output end of the self-acting differential pressure valve 50, to ensure that the installation position of the differential pressure power generation unit 100 is convenient for operation and maintenance. The communication unit is in communication connection with the electrically operated on-off valve 40, and the opening degree of the electrically operated on-off valve 40 can be controlled through the communication unit, thereby controlling the water inflow of the differential pressure power generation unit 100.

[0050] Specifically, the electrically operated on-off valve 40 is used to control the start and stop of the whole power generation system, because the differential pressure power generation unit 100 is not stable in heating and is not all-weather power generation. When the power of the communication unit is lower than %, the communication unit sends instructions to the electrically operated on-off valve 40 to control the opening and opening degree of the valve.

[0051] In a specific embodiment, it further comprises: a downhole battery box 500 and a power generation control unit 300, the downhole battery box 500 is electrically connected with the communication unit, and the downhole battery box 500 can be used to store the electrical energy generated by the differential pressure power generation unit 100 to provide power support when the power generation is insufficient or the system power demand is large. The input end of the power generation control unit 300 is electrically connected with the differential pressure power generation unit 100, and the output end is electrically connected with the communication unit, and the power generation control unit 300 can monitor and adjust the power generation process of the differential pressure power generation unit 100 to ensure the stability of the power generation process and reasonably distribute the electrical energy to the communication unit and the downhole battery box 500.

[0052] In this specific embodiment, the installation of the downhole battery box 500 increases the energy storage function of the overall system, improves the system's ability to respond to emergencies and peak electricity consumption, and further enhances the stability and reliability of the system. The power generation control unit 300 realizes intelligent management of the power generation process, improves energy utilization efficiency and overall system performance. Specifically, install the downhole battery box 500 at a suitable location underground, ensure that its installation environment is safe and reliable, avoid being affected by moisture, collision, etc. Electrically connect the downhole battery box 500 and the communication unit through wires to ensure normal electrical connection, install the power generation control unit 300, and electrically connect its input end to the output end of the differential pressure power generation unit 100 and the output end to the communication unit, ensuring that each connection line is correct and accurate. Debug the power generation control unit 300 to enable it to accurately monitor and regulate the power generation process of the differential pressure power generation unit 100.

[0053] In a specific embodiment, the downhole battery box 500 is electrically connected to the power generation control unit 300, so that the power generation control unit 300 can deliver the electrical energy obtained by the differential pressure power generation unit 100 to the downhole battery box 500. The communication unit is in communication with the downhole battery box 500 and the electrically operated on-off valve 40, and obtains the power of the downhole battery box 500, and then controls the opening and closing degree of the electrically operated on-off valve 40.

[0054] In a specific embodiment, it also includes a water supply downhole direct-buried driving device 410 and a water return downhole direct-buried driving device 420, and the communication unit includes a water supply communication unit 610 and a water return communication unit 620. The water supply communication unit 610 is in communication with the water supply downhole direct-buried driving device 410, and controls the opening and closing of the water return electric regulating valve through the water supply downhole direct-buried driving device 410. The water return communication unit 620 is in communication with the water return downhole direct-buried driving device 420, and controls the opening and closing of the water return electric regulating valve through the water return downhole direct-buried driving device 420.

[0055] A control method using a downhole automatic charging control electric regulating valve system includes the following steps:

[0056] S100, the differential pressure charging unit converts water pressure potential energy into electrical energy;

[0057] In this specific step, the pressure difference charging unit converts the water pressure potential energy of the water flow through the return water pipeline 220 into electrical energy. Specifically, the heat well down pressure difference power generation device includes a shell, an output pipeline, an input pipeline, a self-operated pressure difference valve 50, and a generator 60. The shell is a hollow structure. The two ends of the input pipeline are respectively adapted to connect the heat well down water supply pipeline 210 and the shell. The two ends of the output pipeline are respectively adapted to connect the heat well down return water pipeline 220 and the shell. The self-operated pressure difference valve 50 and the generator 60 are both arranged inside the shell. The input end of the self-operated pressure difference valve 50 is connected with the input pipeline, and the output end is connected with the output pipeline. The generator 60 is adapted to electrically connect the downhole battery box 500 and the self-operated pressure difference valve 50, and provides electrical energy for the downhole battery box 500. The generator 60 outputs electrical energy to the battery box and the automatic control component, reduces the dependence on external cables, adapts to the difficult wiring scene underground, and can generate electricity by using the water flow in the water supply pipeline 210 and the return water pipeline 220 underground and the pressure difference of the water flow without repeatedly replacing the battery of the downhole battery box 500. The electrical energy is transmitted to the downhole battery box 500, which greatly improves the work efficiency. Specifically, the shell provides a closed space for the generator 60 and the self-operated pressure difference valve 50 to resist the harsh environment of underground humidity, dust, high pressure, etc. The input pipeline connects the heat well down water supply pipeline 210 and the shell, and the output pipeline connects the shell and the return water pipeline 220 to form a hydraulic circulation channel. The self-operated pressure difference valve 50 automatically adjusts the water flow pressure difference to provide constant hydraulic drive for the generator 60. The generator 60 realizes mechanical energy-electricity conversion through stable water flow, and transmits the converted electricity to the downhole battery box 500. It also includes a check valve 70, which is communicatively arranged on the output pipeline to ensure that water only flows from the water supply pipeline 210 to the return water pipeline 220 and cannot flow back. When the return water side pressure of the heating system fluctuates, the water flow does not impact the turbine of the generator 60 and the valve core of the self-operated pressure difference valve 50 in the reverse direction, avoiding damage to the equipment due to reverse rotation. It realizes a one-way flow channel of “input→self-operated pressure difference valve→output”, ensuring the continuity of the power generation process and the effectiveness of the pressure difference valve adjustment. It also includes input and output manual ball valves 20. The input manual ball valve 20 is communicatively arranged on the input pipeline, and the output manual ball valve 20 is communicatively arranged on the output pipeline, which is used to fully open or close the power supply system. Usually, both manual ball valves 20 are open, and only when disassembling or maintaining will they be closed. In this way, when maintaining, closing the two ball valves can quickly isolate the device from the heating system, without the need to shut down the entire heating system, reducing the impact of maintenance on heating, physically cutting off the flow to protect the safety of maintenance personnel, and preventing external impurities from entering the clean chamber to be maintained.Further comprising: an electrically operated on-off valve 40, the electrically operated on-off valve 40 is arranged in the interior of the shell, and two ends of the electrically operated on-off valve 40 are connected with the input pipeline and the self-operated pressure difference valve 50 respectively, the electrically operated on-off valve 40 controls important components of the whole power generation system, because the power generation system will make the heat supply unstable, so it is not all-weather power generation, when the battery power is lower than 50% and the time is at noon, the valve opening and the opening size are controlled. Further comprising: an input pressure transmitter 10 and an output pressure transmitter 10, the input pressure transmitter 10 is arranged in communication on the input pipeline, and the output pressure transmitter 10 is arranged in communication on the output pipeline, wherein the input pressure transmitter 10 and the output pressure transmitter 10 are connected with the electrically operated on-off valve 40, and control the opening and closing of the electrically operated on-off valve 40. The pressure transmitter 10 can transmit the water pressure of the backwater side to the backwater communication control unit in real time, and then upload it to the cloud platform, so that the user can monitor the water pressure data in real time, and at the same time, this component also participates in the control of the electrically operated on-off valve 40, for example, when the electrically operated on-off valve 40 receives an alarm of excessive water pressure, the valve opening of the electrically operated on-off valve 40 will be reduced. Further comprising: a filter 30, the filter 30 is arranged in communication on the input pipeline, which can filter impurities from the water, and improve the service life of the turbine of the generator 60. The input manual ball valve 20, the input pressure transmitter 10, the filter 30, the electrically operated on-off valve 40, the self-operated pressure difference valve 50, the check valve 70, the output pressure transmitter 10 and the output manual ball valve 20 are connected in sequence. In this way, the whole process coverage of "manual on-off → pressure monitoring → impurity filtering → automatic on-off → pressure difference stabilization → reverse flow blocking → pressure monitoring → manual on-off" is realized, the function is layered and clear, conflicts are avoided, and the standardized flow channel is convenient for on-site installation, arrangement and fault troubleshooting. The shell comprises: a cover body and a cover body, the cover body is a hollow square structure, and one end is open, the cover body is a plate structure matched with the opening of the cover body, and the cover body and the cover body are connected by sealing bolts.

[0058] S200, the obtained electric energy is transmitted to the communication unit;

[0059] In this specific step, the pressure difference power generation unit 100 transmits the obtained electric energy to the communication unit, so that the communication unit does not need to be connected with an additional power supply, and the control of the backwater electric regulating valve and the backwater electric regulating valve is completed.

[0060] S300, the communication unit adjusts the opening and closing degree of the water supply pipeline 210 and the backwater pipeline 220;

[0061] After the communication unit obtains self-sufficient electric energy, the staff does not need to replace the battery, and the opening and closing degree adjustment of the water supply pipeline 210 and the backwater pipeline 220 can be completed.

[0062] In a specific embodiment, S100, the pressure difference charging unit converts water pressure potential energy into electric energy, which further comprises the following steps:

[0063] S110, the electric switch valve 40 of the differential pressure power generation unit 100 adjusts the water inflow of the input end of the self-operated differential pressure valve 50;

[0064] In this specific step, pressure transmitters 10 are arranged at the input end and the output end of the differential pressure power generation unit 100, the pressure change between the two ends of the differential pressure power generation unit 100 is obtained, and according to the pressure change between the two ends of the differential pressure power generation unit 100, the electric switch valve 40 is communicated and connected through the communication unit, and the water inflow of the input end of the differential pressure power generation unit 100 is adjusted.

[0065] S120, the self-operated differential pressure valve 50 of the differential pressure power generation unit 100 stabilizes the water pressure of the water flow;

[0066] In this specific step, the self-operated differential pressure valve 50 is arranged at the input end of the generator 60 for stabilizing the water flow, so as to ensure that the water flowing into the generator 60 can be stabilized.

[0067] S130, the generator 60 of the differential pressure power generation unit 100 converts the water pressure potential energy of the water flow into electric energy;

[0068] In this specific step, the generator 60 can convert the water pressure potential energy into electric energy. When the water flowing in the water supply pipeline 210 flows into the water return pipeline 220, the water pressure potential energy of the water flow itself is converted into electric energy, and the generated electric energy is transmitted to the communication unit through the power generation control unit 300, so as to realize the self-sufficiency of the overall system.

[0069] In one specific embodiment, S110, the electric switch valve 40 of the differential pressure power generation unit 100 adjusts the water inflow of the input end of the self-operated differential pressure valve 50 further includes the following steps:

[0070] S111, obtaining the water pressure of the input end and the output end of the differential pressure power generation unit 100;

[0071] In this specific step, pressure transmitters 10 are arranged at the input end and the output end of the differential pressure power generation unit 100, the water pressure of the input end and the output end of the differential pressure power generation unit 100 is obtained, and the water pressure information of the two ends of the differential pressure power generation unit 100 is provided.

[0072] S112, obtaining the electric quantity of the downhole battery box 500 and the communication unit;

[0073] In this specific step, the power generation control unit 300 is respectively communicated and connected with the downhole battery box 500 and the communication unit, and the electric quantity information of the downhole battery box 500 and the communication unit can be obtained.

[0074] S113. Adjust the opening and closing degree of the electric switch valve 40 according to the water pressure at both ends of the differential pressure power generation unit 100, the power of the underground battery box 500, and the power of the communication unit.

[0075] In this specific step, the pressure transmitters 10 installed at both ends of the differential pressure power generation unit 100 can transmit the water pressure on the return water side and the return water side to the communication unit in real time, allowing the user to monitor the water pressure data in real time. Simultaneously, it controls the electric switching valve 40; for example, when the electric switching valve 40 receives an alarm indicating excessive water pressure, the valve opening will decrease. This entire process does not describe in detail the methods, means, components, and circuits well known to those skilled in the art, in order to highlight the subject matter of this application.

[0076] like Figure 1 As shown, the downhole automated charging control method of this application embodiment includes: the power generation system may cause unstable heating, and when the battery power of the downhole battery box or communication unit is less than 50%, a command is sent to the electric switch valve to control the valve opening and the opening degree.

[0077] In one specific embodiment, the following steps are also included:

[0078] S400, the communication unit obtains the power of the downhole battery box;

[0079] In this specific step, the communication unit obtains the power storage of the downhole battery box.

[0080] The S500 communication unit controls the differential pressure charging unit to convert electrical energy and supply power to the downhole battery box or communication unit.

[0081] In this specific step, the communication unit obtains the power from the downhole battery box and the communication unit itself, and prioritizes the transmission of the electrical energy converted by the differential pressure power generation unit 100 to the communication unit.

[0082] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A downhole system with an automated charging control electronic valve, characterized in that, include: Return water electrically adjustable valve, return water electrically adjustable valve, communication unit and differential pressure power generation unit; The return water electric regulating valve is suitable for installation on the return water pipeline. The communication unit is communicatively connected to the return water electric regulating valve to control the opening and closing degree of the return water electric regulating valve. The return water electric regulating valve is suitable for installation on the return water pipeline. The communication unit is communicatively connected to the return water electric regulating valve to control the opening and closing degree of the return water electric regulating valve. The input end of the differential pressure power generation unit is connected to the return water pipe, the output end is connected to the return water pipe, and the differential pressure power generation unit is electrically connected to the communication unit.

2. The downhole automated charging control electronic valve system according to claim 1, characterized in that, The differential pressure power generation unit includes: a self-operated differential pressure valve and a generator; The input end of the self-operated differential pressure valve is connected to the return water pipeline; The generator's input end is connected to the self-regulating differential pressure valve, and its output end is connected to the return water pipe. The generator is also electrically connected to the communication unit, providing power to the communication unit.

3. The downhole automated charging control electronic valve system according to claim 2, characterized in that, The differential pressure power generation unit also includes: an electrically operated switching valve; The electric switching valve is connected to the output end of the self-operated differential pressure valve; The communication unit is communicatively connected to the electric switching valve.

4. The downhole automated charging control electronic valve system according to claim 3, characterized in that, Also includes: Downhole battery box and power generation control unit; The downhole battery box is electrically connected to the communication unit; The input terminal of the power generation control unit is electrically connected to the differential pressure power generation unit, and the output terminal is electrically connected to the communication unit.

5. The downhole automated charging control electronic valve system according to claim 4, characterized in that, The downhole battery box is electrically connected to the power generation control unit; The communication unit is communicatively connected to the downhole battery box and the electric switching valve.

6. A control method comprising the downhole automated charging control electronic valve system as described in claims 1-5, characterized in that, Includes the following steps: The differential pressure charging unit converts water pressure potential energy into electrical energy. The acquired electrical energy is transmitted to the communication unit; The communication unit adjusts the opening and closing degree of the return water pipe.

7. The control method according to claim 6, characterized in that, The differential pressure charging unit, which converts water pressure potential energy into electrical energy, also includes the following steps: The electric switching valve of the differential pressure power generation unit adjusts the water inflow at the input end of the self-operated differential pressure valve; The self-operated differential pressure valve of the differential pressure power generation unit stabilizes the water pressure of the water flow. The generator in the differential pressure power generation unit converts the pressure potential energy of the flowing water into electrical energy.

8. The control method according to claim 7, characterized in that, The electric switching valve of the differential pressure power generation unit, in adjusting the water inflow at the input end of the self-operated differential pressure valve, further includes the following steps: Obtain the water pressure at the input and output terminals of the differential pressure power generation unit; Obtain the power levels of the downhole battery box and the communication unit; The opening and closing degree of the electric switch valve is adjusted according to the water pressure at both ends of the differential pressure power generation unit, the power of the downhole battery box, and the power of the communication unit.

9. The control method according to claim 5, characterized in that, It also includes the following steps; The communication unit acquires the power of the downhole battery box; The communication unit controls the electrical energy converted by the differential pressure charging unit to supply power to the downhole battery box or the communication unit.

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