Negative pressure gas lift open type self-circulation power generation device

Abstract

The invention discloses a negative pressure gas lift open type self-circulation power generation device, and relates to the technical field of power generation equipment, the negative pressure gas lift open type self-circulation power generation device comprises a support, the inner wall of the top end of the support is fixedly connected with a square plate, the negative pressure gas lift open type self-circulation power generation device is driven only by a high-pressure fan, mechanical impeller abrasion and cavitation erosion faults are avoided, the energy consumption is only 1 / 5-1 / 10 of that of a traditional water pump, and the energy-saving effect is particularly prominent under the high-lift working condition; the maintenance cost is greatly reduced, and the service life of equipment is longer; the static pressure balance pipe is arranged outside and matched with the upper and lower holes of the water outlet pipe to be communicated with the first three-way connector and the second three-way connector, no internal pipeline is arranged, construction is easier and more convenient, sealing is more reliable, and the problem that internal pipelines interfere with gas-liquid mixing is thoroughly avoided. Compared with a traditional gas lift, a special gas inlet bin is additionally arranged for pressure stabilization, and a pressure closed-loop structure communicated with upper and lower holes of a static pressure balance pipe externally connected with a water outlet pipe and a valve body balance connector of a pressure difference balance valve is matched, so that double static pressure balance is achieved, and the core problems of negative pressure suffocation, pipeline suction collapse and dead pressure of a water inlet valve are thoroughly solved.

Description

Technical Field

[0001] This invention relates to the field of power generation equipment technology, specifically to a negative pressure air lift open self-circulating power generation device. Background Technology

[0002] Currently, small-scale power generation devices are mainly divided into traditional hydropower, solar power, and wind power. Among them, traditional hydropower relies on natural water level differences and is significantly limited by geographical environment; solar and wind power are greatly affected by weather and seasons, have insufficient operational stability, and have high equipment purchase and maintenance costs.

[0003] To address the aforementioned issues, existing technologies have developed circulating hydroelectric power generation devices that generate electricity through artificially created water level differences. However, these devices often employ bottom-injection aeration, which suffers from uneven gas-water mixing, limited water extraction efficiency, and difficulty in precisely controlling pressure differences, making long-term stable self-circulation operation challenging. Furthermore, existing circulating power generation devices mostly employ a closed double-chamber structure, which is complex, costly to manufacture, and inconvenient to maintain. Open-chamber structures, on the other hand, are difficult to control due to pressure issues and poor water extraction stability, preventing their effective application in self-circulating power generation. They also lack a robust static pressure balancing structure, failing to address the pressure turbulence problem in open-chamber systems. Additionally, the design logic for generating electricity from the drainage pipe's independent potential energy is unclear, and the power output corresponding to the actual water extraction volume is not calculated, leading to a severe disconnect between theoretical design and engineering practice. Summary of the Invention

[0004] The purpose of this invention is to provide a negative pressure air lift open self-circulating power generation device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a negative pressure air-lift open-type self-circulating power generation device, comprising: a support frame, a square plate fixedly connected to the inner wall of the top of the support frame, a lower open water tank fixedly connected to the inner wall of the bottom of the support frame, a square tank fixedly connected to one side of the lower open water tank, and a high-level water storage tank fixedly connected to the top of the square plate; and a self-circulating power generation mechanism, comprising a high-pressure blower fixedly connected to one side of the outer wall of the open water tank, an air inlet pipe connected to the output end of the high-pressure blower, an air inlet chamber connected to one end of the air inlet pipe, and a fluid balance component provided on the inner wall of the air inlet chamber for controlling the water flow balance and stability.

[0006] As a further preferred embodiment of this technical solution, the fluid balance component includes a water outlet pipe fixedly connected to the inner wall of the air inlet chamber, the bottom end of the water outlet pipe being located inside the open water chamber, and the top end of the water outlet pipe being connected to one side of the inner wall of the high-level water storage chamber.

[0007] As a further preferred embodiment of this technical solution, the air intake chamber has multiple air inlets on one side, one end of each air inlet extends through and into the interior of the water outlet pipe, a differential pressure balancing valve is fixedly connected to the bottom outer wall of the water outlet pipe, and a flap-type check valve is fixedly connected to the top outer wall of the water outlet pipe.

[0008] As a further preferred embodiment of this technical solution, the bottom end of the outlet pipe near the differential pressure balancing valve is connected to an external static pressure balancing pipe, the outer wall of the bottom end of the external static pressure balancing pipe is connected to a first tee connector, one end of the first tee connector is connected to one side of the inner wall of the outlet pipe, and the outer wall of the top end of the external static pressure balancing pipe is connected to a second tee connector, one end of the second tee connector is connected to one side of the inner wall of the outlet pipe.

[0009] As a further preferred embodiment of this technical solution, a first water level sensor is fixedly connected to one side of the inner wall of the high-level water storage tank, and a second water level sensor is fixedly connected to one side of the inner wall of the lower open water tank.

[0010] As a further preferred embodiment of this technical solution, an auxiliary component is provided at the bottom of the high-level water storage tank. The auxiliary component includes a static pressure balance pipe that connects to both sides of the bottom of the inner wall of the high-level water storage tank. One end of the static pressure balance pipe passes through the square plate and extends into the interior of the lower open water tank.

[0011] As a further preferred embodiment of this technical solution, a drain pipe is connected to the bottom of one side of the inner wall of the high-level water storage tank, and a drain check valve is fixedly connected to the outer wall of the bottom end of the drain pipe. A water turbine is fixedly connected to the bottom of the inner wall of the square tank.

[0012] This invention provides a negative pressure air lift open-type self-circulating power generation device, which has the following beneficial effects: (1) The present invention uses a self-circulating power generation mechanism. Compared with traditional water pumps, the present invention is driven by a high-pressure fan only. There is no mechanical impeller wear or cavitation failure. The energy consumption is only 1 / 5 to 1 / 10 of that of traditional water pumps. The energy saving effect is particularly prominent in high-lift conditions. The maintenance cost is greatly reduced and the service life of the equipment is longer. The static pressure balance pipe is arranged externally and is connected to the first tee joint and the second tee joint respectively with the upper and lower openings of the outlet pipe. There is no internal pipeline arrangement, which makes construction simpler and sealing more reliable, and completely avoids the problem of internal pipeline interference with gas-liquid mixing. Compared to traditional air lift systems, this invention features a dedicated air inlet chamber for pressure stabilization. Combined with a closed-loop pressure structure connecting the static pressure balance pipe to the external water outlet pipe (with upper and lower openings) and the valve body of the differential pressure balance valve, it achieves dual static pressure balance, completely resolving the core problems of negative pressure air stagnation, pipe collapse, and water inlet valve jamming. The gas-liquid ratio is stably maintained at 1:10 to 1:15, ensuring uniform mixing with less gas and more water. The side-outlet upward design and flap-type check valve reduce the air lift opening resistance, and the valves can be quickly disassembled and installed for convenient maintenance. Combined with the water seal design at the outlet, the water column remains continuous and uninterrupted. After shutdown, the dual valves permanently lock the water column, significantly improving operating efficiency and stability.

[0013] (2) Compared with water hammer pumps, this invention uses a self-circulating power generation mechanism. Its fully enclosed water circulation design eliminates any wastewater or tailwater discharge, ensuring 100% water resource recycling. It eliminates reliance on external water sources, completely avoiding water waste and making it suitable for long-term continuous power generation scenarios. Its applicability far surpasses that of water hammer pumps. In contrast to wind, solar, and energy storage, this invention is unaffected by natural conditions such as sunlight, wind, and weather. It generates electricity continuously and stably for 24 hours without intermittency or fluctuations. It requires no supporting energy storage system, saving on the purchase and maintenance costs of energy storage equipment and the risk of heavy metal pollution. The overall power generation cost is extremely low.

[0014] (3) This invention uses a minimum 110mm diameter outlet pipe, which can be flexibly enlarged or thickened according to power generation and water flow requirements. The air inlet chamber and flap check valve can be precisely positioned according to the total height of the outlet pipe. The flap check valve is located 2.5 to 4.5 meters above the air inlet chamber, adapting to different application scenarios. Furthermore, this invention features a unique structure where the differential pressure balancing valve body balance interface is connected to the static pressure balancing pipe, achieving closed-loop pressure control of the outlet pipe. This fundamentally solves the industry pain point of water column blocking the inlet valve. Compared with the traditional single static pressure balancing structure, the pressure control is more precise and the system operation is more stable.

[0015] (4) This invention uses an externally arranged static pressure balance pipe, with only two connecting holes on the outlet pipe, connected to the first and second tee connectors respectively. This eliminates the need to drill holes in the main pipe plug, reducing the risk of leakage and simplifying construction. The flap check valve adopts a double-command structure, allowing for quick disassembly and replacement without sawing the pipe. The differential pressure balance valve is externally connected to the static pressure balance pipe, facilitating convenient maintenance and reducing overall maintenance costs. The overall structure does not rely on natural terrain elevation differences, eliminating the need for large-scale infrastructure projects, resulting in a short construction period and low investment costs. Furthermore, this equipment operates with zero pollution and zero emissions, making it a pure green and sustainable clean energy source with significant potential for large-scale promotion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall top view structure of the present invention; Figure 2 This is a schematic cross-sectional view of the open-type water tank structure in this invention; Figure 3 This is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 4 This is a schematic diagram of the air intake chamber structure viewed from below in this invention; Figure 5 This is a schematic cross-sectional view of the water outlet pipe in this invention; Figure 6 This is a schematic cross-sectional view of the static pressure balance tube in this invention; Figure 7 This is a schematic diagram of the side structure of the water turbine in this invention.

[0017] In the diagram: 1. Support frame; 2. Square plate; 3. Open water tank; 4. High-level water storage tank; 5. Square tank; 6. Self-circulating power generation mechanism; 61. High-pressure blower; 62. Air inlet pipe; 63. Air inlet chamber; 64. Fluid balance component; 65. Auxiliary component; 641. Water outlet pipe; 642. Air inlet; 643. Differential pressure balance valve; 644. Flip-type check valve; 645. External static pressure balance pipe; 646. First tee connector; 647. Second tee connector; 648. First water level sensor; 649. Second water level sensor; 651. Static pressure balance pipe; 652. Drain pipe; 653. Drainage check valve; 654. Water turbine. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides a technical solution: such as Figure 1 As shown in this embodiment, a negative pressure air lift open self-circulating power generation device includes a support 1, a square plate 2 fixedly connected to the inner wall of the top of the support 1, a lower open water tank 3 fixedly connected to the inner wall of the bottom of the support 1, a square tank 5 fixedly connected to one side of the lower open water tank 3, and a high-level water storage tank 4 fixedly connected to the top of the square plate 2. The self-circulating power generation mechanism 6 includes a high-pressure blower 61 fixedly connected to one side of the outer wall of the open water tank 3. The output end of the high-pressure blower 61 is connected to an air inlet pipe 62. One end of the air inlet pipe 62 is connected to an air inlet chamber 63. The inner wall of the air inlet chamber 63 is provided with a fluid balance component 64 for controlling the water flow balance and stability.

[0020] A pipe with an outer diameter of 110mm / 200mm is selected as the outlet pipe 641, which is determined according to the actual power generation and water flow requirements. A DN110 / 200 differential pressure balancing valve 643 is installed at the bottom of the outlet pipe 641. The differential pressure balancing valve 643 is equipped with a dedicated valve body balancing interface. A lower connecting hole is opened on the side wall of the outlet pipe 641 above the differential pressure balancing valve 643 and below the air inlet chamber 63. An upper connecting hole is opened on the lower side of the subsequent side outlet tee. The two connecting holes are respectively matched with a sealed first tee connector 646 and a second tee connector 647.

[0021] The fluid balance assembly 64 includes a water outlet pipe 641 fixedly connected to the inner wall of the air inlet chamber 63. The bottom end of the water outlet pipe 641 is located inside the open water chamber 3, and the top end of the water outlet pipe 641 is connected to one side of the inner wall of the high-level water storage chamber 4.

[0022] Multiple air inlets 642 are provided on one side of the air inlet chamber 63. One end of the air inlet 642 passes through and extends into the interior of the water outlet pipe 641. A differential pressure balancing valve 643 is fixedly connected to the outer wall of the bottom end of the water outlet pipe 641, and a flap-type check valve 644 is fixedly connected to the outer wall of the top end of the water outlet pipe 641.

[0023] The bottom of the outlet pipe 641 near the differential pressure balancing valve 643 is connected to an external static pressure balancing pipe 645. The outer wall of the bottom end of the external static pressure balancing pipe 645 is connected to a first tee connector 646. One end of the first tee connector 646 is connected to one side of the inner wall of the outlet pipe 641. The outer wall of the top end of the external static pressure balancing pipe 645 is connected to a second tee connector 647. One end of the second tee connector 647 is connected to one side of the inner wall of the outlet pipe 641.

[0024] A first water level sensor 647 is fixedly connected to one side of the inner wall of the high-level water storage tank 4, and a second water level sensor 648 is fixedly connected to one side of the inner wall of the lower open water tank 3.

[0025] An air inlet chamber 63 is integrated and sealed at the bottom of the outlet pipe 641 and above the differential pressure balancing valve 643. The air inlet chamber 63 is 0.5 to 0.8 meters away from the bottom of the outlet pipe 641. The high-pressure blower 61 is sealed and connected to the air inlet chamber 63 through the air inlet pipe 62. The external static pressure balancing pipe 645 is attached to the outside of the outlet pipe 641. The pipe diameter is selected from 25 to 40 mm. It is sealed and connected to the lower connecting hole and the upper connecting hole of the outlet pipe 641 and the valve body balancing interface of the differential pressure balancing valve 643 through the first tee connector 646 and the second tee connector 647 respectively. The top of the external static pressure balancing pipe 645 is bent upward and extends 20 to 30 cm above the outlet of the flap check valve 644. The opening is directly open to the atmosphere.

[0026] like Figures 2 to 6 As shown, an auxiliary component 65 is provided at the bottom of the high-level water storage tank 4. The auxiliary component 65 includes a static pressure balance pipe 651 that connects to both sides of the bottom of the inner wall of the high-level water storage tank 4. One end of the static pressure balance pipe 651 passes through the square plate 2 and extends into the interior of the lower open water tank 3.

[0027] Two static pressure balancing pipes 651 and the outlet pipe 641 are set in parallel without conflict, adapting to the pressure output of the high-pressure blower 61, the air flow rate of 140m³ / h, and the corresponding water lifting flow rate requirements. Through the dual-pipe dual-transmission static pressure, the problem of uncontrollable and easily disordered pressure in the lower open water tank 3 and the high-level water storage tank 4 is effectively solved. The auxiliary fluid balancing component 64 stabilizes the negative pressure of -5~-10kPa and the air intake flow rate in the outlet pipe 641, realizing the static pressure balance between the lower open water tank 3 and the high-level water storage tank 4 and the fluid balance in the outlet pipe 641. This avoids the decrease in water lifting efficiency caused by local pressure disorder and the fluctuation of the power generation of the drainage pipe 652 alone. It ensures the stability of the system during the process of water being lifted 50cm through the outlet pipe 641 and falling freely 6m through the drainage pipe 652 at a flow rate of 0.25m³ / s to generate electricity, ensuring that the power generation is stably maintained at 12.5~13.2KW and above, thus improving operational reliability.

[0028] A drain pipe 652 is connected to one bottom end of the inner wall of the high-level water storage tank 4. A drain check valve 653 is fixedly connected to the outer wall of the bottom end of the drain pipe 652. A water turbine 654 is fixedly connected to the bottom of the inner wall of the square tank 5.

[0029] The design incorporates a separate potential energy power generation structure for the drainage pipe 652, with power generation calculated based on a flow rate of 0.25 m³ / s. The actual power generation can be stably maintained at 12.5~13.2 KW, fully compatible with the rated load range of a 10 KW, 1500 RPM generator. It can stably bear the actual power generation load, avoiding equipment damage caused by overload or underload. The design is based entirely on the actual working condition of "water being lifted through the outlet pipe 641 and falling freely for 6m through the drainage pipe 652 at a flow rate of 0.25 m³ / s". Combining the water lifting flow rate of the outlet pipe 641, the water flow characteristics of the drainage pipe 652, and the water lifting efficiency of the fluid balance component 64 driven by negative pressure and pressure difference, along with the conversion efficiency of the high-efficiency water turbine 654, the power generation and output closely match the actual engineering requirements, making it highly feasible to implement. This invention retains the core advantages of self-circulating power generation while precisely controlling the power generation capacity through actual flow rate, drop height, and pipeline specifications, ensuring a stable power generation capacity of over 10KW. It adapts to the power needs of different scenarios, and the 10KW, 1500 RPM generator can fully handle the power generation load and simultaneously meet the power supply needs of multiple devices, thus improving the practicality of the device.

[0030] like Figures 1 to 7 As shown, the above structure is compact and occupies a small area, and is suitable for the installation and operation of the high-pressure blower 61, the fluid balance component 64 driven by negative pressure and pressure difference, the static pressure balance pipe 651, and the drain pipe 652 as a separate potential energy power generation component; the water outlet pipe 641 is adapted to the negative pressure output characteristics of the high-pressure blower 61 and the corresponding water lifting flow rate requirement, and the drain pipe 652 is adapted to the free fall requirement of 0.25m³ / s and the separate power generation requirement.

[0031] Work process: Water is injected into the system through the opening at the top of the external static pressure balance pipe 645. The water sequentially fills the internal channels of the external static pressure balance pipe 645, the differential pressure balance valve 643, the air inlet chamber 63, and the water outlet pipe 641, purging all the air in the system and completing the initial water injection operation. This ensures that there is no air accumulation inside the system and at the same time, makes the internal pressure of the external static pressure balance pipe 645, the water outlet pipe 641, and the differential pressure balance valve 643 initially equal to that of the atmosphere.

[0032] The top of the external static pressure balancing pipe 645 is continuously open to the atmosphere. Through the first three-way connector 646 and the second three-way connector 647, it is sealed and connected to the upper and lower connecting holes of the water outlet pipe 641 and the valve body balancing interface of the differential pressure balancing valve 643. In real time, the internal pressure of the water outlet pipe 641, the valve body pressure of the differential pressure balancing valve 643 and the atmospheric pressure are conducted in a closed loop to balance the pressure. This automatically eliminates negative pressure, vacuum, pipe collapse, turbulence and air blockage in the water outlet pipe 641, and completely prevents the differential pressure balancing valve 643 from being blocked by the water column. It creates a stable and uniform gas-liquid rising flow field, laying a solid foundation for efficient air lift water extraction.

[0033] When the high-pressure blower 61 is started, the compressed gas enters the air inlet chamber 63 and is stabilized. Then, it enters the water outlet pipe 641 evenly and smoothly. Under the pressure closed-loop balance of the static pressure balance pipe 651, the gas and water are fully and evenly mixed to form a stable gas-liquid ratio of 1:10 to 1:15. The water is then steadily lifted by the buoyancy of the gas and discharged through the side outlet tee and 90° elbow from the flap check valve 644 to the high-level water storage tank 4. The water outlet is submerged in the liquid. The water column is continuous without air intake or breakage, and there is no wastewater discharge throughout the process. The energy consumption is much lower than that of traditional water lifting equipment. After the machine is stopped, the flap check valve 644 and the differential pressure balance valve 643 double lock the water column, so that the water column is permanently maintained without falling back or depressurization. The next time the machine is started, there is no need to refill the water and the gas and water are discharged directly.

[0034] The water in the high-level water storage tank 4 falls naturally by gravity, impacting the water turbine 654 and converting gravitational potential energy into electrical energy. After power generation, the water flows back to the inlet of the differential pressure balance valve 643 through the return circulation pipeline and re-enters the air lift water process, realizing the infinite recycling of water and 24-hour uninterrupted stable operation.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A negative pressure air-lift open-type self-circulating power generation device, characterized in that, include: The bracket (1) has a square plate (2) fixedly connected to the inner wall of the top end of the bracket (1), a lower open water tank (3) fixedly connected to the inner wall of the bottom end of the bracket (1), a square tank (5) fixedly connected to one side of the lower open water tank (3), and a high-level water storage tank (4) fixedly connected to the top of the square plate (2). The self-circulating power generation mechanism (6) includes a high-pressure blower (61) fixedly connected to one side of the outer wall of the open water tank (3). The output end of the high-pressure blower (61) is connected to an air inlet pipe (62). One end of the air inlet pipe (62) is connected to an air inlet chamber (63). The inner wall of the air inlet chamber (63) is provided with a fluid balance component (64) for controlling the water flow balance and stability.

2. The negative pressure air lift open-type self-circulating power generation device according to claim 1, characterized in that: The fluid balance component (64) includes a water outlet pipe (641) fixedly connected to the inner wall of the air inlet chamber (63). The bottom end of the water outlet pipe (641) is located inside the open water chamber (3), and the top end of the water outlet pipe (641) is connected to one side of the inner wall of the high-level water storage chamber (4).

3. The negative pressure air lift open-type self-circulating power generation device according to claim 2, characterized in that: The air intake chamber (63) has multiple air inlets (642) on one side. One end of the air inlet (642) extends through and into the interior of the water outlet pipe (641). A differential pressure balancing valve (643) is fixedly connected to the outer wall of the bottom end of the water outlet pipe (641), and a flap check valve (644) is fixedly connected to the outer wall of the top end of the water outlet pipe (641).

4. The negative pressure air lift open-type self-circulating power generation device according to claim 3, characterized in that: The bottom of the outlet pipe (641) near the differential pressure balancing valve (643) is connected to an external static pressure balancing pipe (645). The outer wall of the bottom end of the external static pressure balancing pipe (645) is connected to a first tee connector (646). One end of the first tee connector (646) is connected to one side of the inner wall of the outlet pipe (641). The outer wall of the top end of the external static pressure balancing pipe (645) is connected to a second tee connector (647). One end of the second tee connector (647) is connected to one side of the inner wall of the outlet pipe (641).

5. The negative pressure air lift open-type self-circulating power generation device according to claim 4, characterized in that: A first water level sensor (647) is fixedly connected to one side of the inner wall of the high-level water storage tank (4), and a second water level sensor (648) is fixedly connected to one side of the inner wall of the lower open water tank (3).

6. The negative pressure air lift open-type self-circulating power generation device according to claim 1, characterized in that: The bottom of the high-level water storage tank (4) is provided with an auxiliary component (65), which includes a static pressure balance pipe (651) connected to both sides of the bottom of the inner wall of the high-level water storage tank (4). One end of the static pressure balance pipe (651) passes through the square plate (2) and extends into the interior of the lower open water tank (3).

7. The negative pressure air lift open-type self-circulating power generation device according to claim 1, characterized in that: A drain pipe (652) is connected to the bottom of one side of the inner wall of the upper sealed water tank (4). A drain check valve (653) is fixedly connected to the outer wall of the bottom end of the drain pipe (652). A water turbine (654) is fixedly connected to the bottom of the inner wall of the square tank (5).

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