Condensate water power generation device for high-pressure gas storage

Abstract

The invention belongs to the technical field of high-pressure gas storages, and particularly discloses a high-pressure gas storage condensate water power generation device which comprises a water collecting well, a pressure reduction and speed regulation pipe set, a power generation module and a pressure reducing valve set. The water collecting well is arranged at the bottom of the high-pressure gas storage, communicates with the high-pressure gas storage and is used for collecting condensate water in the high-pressure gas storage; one end of the depressurization speed regulation pipe set communicates with the water collecting well, and the other end of the depressurization speed regulation pipe set extends into the power generation module and is used for inputting condensate water in the high-pressure gas storage into the power generation module after depressurization speed regulation; and the pressure reducing valve group is arranged on the pressure reducing and speed regulating pipe group and is opened and closed according to the water level of condensate water in the water-collecting well. Condensate water collection and power generation can be carried out in the operation period of the high-pressure gas storage, pressure fluctuation in the high-pressure gas storage is small, and operation safety is guaranteed; drainage kinetic energy can be converted into electric energy, the requirement for electricity utilization of high-pressure gas storage auxiliary equipment is met, and meanwhile drainage impact damage to the environment can be avoided. The manufacturing cost is low, and the maintenance cost is reduced through modular design.

Description

Technical Field

[0001] The invention discloses a condensed water power generation device for a high-pressure gas storage reservoir, belonging to the technical field of high-pressure gas storage reservoirs. Background Art

[0002] In the daily operation of high-pressure gas storage, due to the continuous cycle of charging and discharging, moisture in the air continues to condense and accumulate at the bottom of the gas storage, and an effective drainage solution is urgently needed.

[0003] There are many problems with traditional drainage methods. For example, operators face safety risks in high-pressure environments when manually draining water. Conventional drainage valves are prone to seal failure under high pressure differentials, leading to safety accidents such as leaks. The drainage process can cause pressure fluctuations, threatening the stability of the entire gas storage system. The discharged water is not used reasonably, resulting in a waste of resources. These problems have seriously restricted the safe and efficient operation of high-pressure gas storages, and innovative drainage and energy recovery technologies are urgently needed. Summary of the invention

[0004] The object of the present invention is to provide a high-pressure gas storage condensate power generation device to solve the technical problems of low safety and low energy utilization rate in existing drainage methods.

[0005] The present invention provides a high-pressure gas storage condensate power generation device, comprising a water collection well, a pressure-reducing and speed-regulating pipe group, a power generation module and a pressure-reducing valve group; The water collection well is arranged at the bottom of the high-pressure gas storage reservoir and is communicated with the high-pressure gas storage reservoir, and is used to collect condensed water in the high-pressure gas storage reservoir; One end of the pressure-reducing and speed-regulating pipe group is connected to the water collection well, and the other end extends into the power generation module, so as to reduce the pressure and speed of the condensed water in the high-pressure gas storage reservoir and then input it into the power generation module; The pressure reducing valve group is arranged on the pressure reducing and speed regulating pipe group, and is used for opening and closing according to the water level of the condensed water in the water collection well.

[0006] Preferably, the step-down speed regulating tube group comprises a multi-stage pipeline which is sealed and connected in sequence; The diameter of the multi-stage pipeline gradually decreases from the water collection well toward the power generation module; The pressure reducing valve group is arranged on the first-stage pipeline connected to the water collecting well.

[0007] Preferably, the multi-stage pipeline is specifically a 3-stage pipeline; The ratio of the pipe diameters of the three-level pipelines is 1:0.75~0.85:0.55~0.65; The flow rate of the first-stage pipe outlet is 0.8m 3 / s to 1.2m 3 / s.

[0008] Preferably, the pressure reducing valve group comprises a first pressure reducing valve and a second pressure reducing valve; The first pressure reducing valve is arranged at the water inlet of the first-stage pipeline; The second pressure reducing valve is arranged at the water outlet of the first-stage pipeline.

[0009] Preferably, the pressure-reducing and speed-regulating tube group further includes a venturi tube and a pressure-reducing structure; The inlet end of the venturi tube is provided with a decompression structure, the decompression structure is connected to the last stage pipeline, and the outlet end of the venturi tube extends into the power generation module; The decompression structure comprises a porous plate and a honeycomb decompression plate which are stacked.

[0010] Preferably, the throat diameter of the venturi tube is 110 mm to 130 mm, the outlet diameter is 140 mm to 150 mm, and the diffusion angle is 6° to 9°.

[0011] Preferably, the power generation module comprises an energy conversion submodule, and the energy conversion submodule comprises a worm gear generator, a rotating shaft and a plurality of swirl blades; The plurality of swirl blades are evenly arranged on the rotating shaft, and are used to drive the rotating shaft to rotate under the action of the water flow output by the step-down speed regulating tube group; The worm gear generator is connected to one end of the rotating shaft and is used for converting mechanical energy when the rotating shaft rotates into electrical energy.

[0012] Preferably, the radius of curvature of each swirl blade is 140 mm to 160 mm; The angle of each swirl blade is 40° to 50°.

[0013] Preferably, the water outlet of the venturi tube is inclined downward, and the angle between the outlet and the horizontal line is 25° to 35°.

[0014] Preferably, the step-down speed regulating tube group further includes a plurality of pressure sensors; A pressure sensor is arranged in the primary pipeline to obtain the pressure value in the corresponding pipeline.

[0015] Compared with the prior art, the high-pressure gas storage condensate power generation device of the present invention has the following beneficial effects: The present invention can collect condensed water and generate electricity during the operation of the high-pressure gas storage reservoir through the combined effects of the water collection well, the pressure-reducing speed-regulating pipe group and the pressure-reducing valve group, thereby improving the overall operating efficiency. The pressure fluctuation in the high-pressure gas storage reservoir is small, ensuring safe operation. The present invention converts high-pressure water into low-pressure and low-speed water flow to avoid damage to the environment caused by drainage impact. At the same time, it converts drainage kinetic energy into electrical energy to meet the electricity needs of auxiliary equipment in the high-pressure gas storage reservoir. No external power supply is required. Electrical equipment such as the pressure-reducing valve group and sensors for monitoring water levels are driven by capacitors to store electrical energy, thereby reducing system energy consumption. The present invention has low manufacturing costs and reduces maintenance costs through modular design. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a condensate power generation device for a high-pressure gas storage reservoir in an embodiment of the present invention.

[0017] In the figure: 1 is a concrete lining layer; 2 is a sealing layer; 3 is a high-pressure gas storage reservoir; 4 is a water collection well; 5 is a water level monitor; 6 is a first-level pipeline; 7 is a second-level pipeline; 8 is a third-level pipeline; 9 is a venturi tube; 10 is a swirl energy dissipation barrel; 11 is an energy conversion submodule; 12 is a gravity drainage pipe; 13 is a pressure sensor; 14 is a first pressure reducing valve; 15 is a second pressure reducing valve; 16 is a safety valve; 17 is a pressure reducing structure. DETAILED DESCRIPTION

[0018] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0019] The embodiment of the present invention provides a high-pressure gas storage condensate power generation device, such as Figure 1 As shown, it includes a water collecting well 4, a pressure reducing and speed regulating pipe group, a power generation module and a pressure reducing valve group; wherein the water collecting well 4 is arranged at the bottom of the high-pressure gas storage reservoir 3 and is connected with the high-pressure gas storage reservoir 3, and is used for collecting condensed water in the high-pressure gas storage reservoir 3; one end of the pressure reducing and speed regulating pipe group is connected with the water collecting well 4, and the other end extends into the power generation module, and is used for reducing the pressure and speed regulating of the condensed water in the high-pressure gas storage reservoir 3 and then inputting it into the power generation module for power generation; the pressure reducing valve group is arranged on the pressure reducing and speed regulating pipe group, and is used for opening and closing according to the water level of the condensed water in the water collecting well 4, so as to reduce the pressure fluctuation in the high-pressure gas storage reservoir 3 caused by the condensed water drainage process, and ensure the safe operation of the high-pressure gas storage reservoir 3.

[0020] The present invention can collect condensed water and generate electricity during the operation of the high-pressure gas storage reservoir 3 through the combined effects of the water collection well 4, the pressure-reducing speed-regulating pipe group and the pressure reducing valve group, thereby improving the overall operation efficiency, and the pressure fluctuation in the high-pressure gas storage reservoir 3 is small, ensuring safe operation. The present invention converts high-pressure water into low-pressure and low-speed water flow to avoid damage to the environment caused by drainage impact, and at the same time converts drainage kinetic energy into electrical energy, which can meet the electricity needs of auxiliary equipment of the high-pressure gas storage reservoir 3. No external power supply is required, and electrical equipment such as the pressure reducing valve group and the sensor for monitoring the water level are driven by the capacitor to store electrical energy, thereby reducing system energy consumption. The present invention has low manufacturing cost and reduces maintenance cost through modular design.

[0021] In the embodiment of the present invention, the water collection well 4 is set at the lowest point of the high-pressure gas storage reservoir 3. By way of example, the diameter of the water collection well 4 is 0.8m to 1m, the depth is 1.5m to 2m, and the structure is the same as that of the high-pressure gas storage reservoir 3, both of which include a concrete lining layer 1 and a sealing layer 2. In order to reduce the probability of water immersion corrosion of the water collection well 4, the embodiment of the present invention also performs anti-corrosion treatment on the surface of the water collection well 4 (i.e., the outside of the sealing layer), such as coating an anti-corrosion coating, and the material of the anti-corrosion coating can be asphalt, epoxy resin, etc.

[0022] In order to ensure that the water collection well 4 can effectively collect condensed water, the embodiment of the present invention sets a slope on the inner wall of the high-pressure gas storage reservoir 3 connected to the water collection well 4, and the slope range is between 3% and 5%. This slope can ensure that the condensed water flows smoothly to the water collection well 4 by gravity, thereby efficiently collecting the condensed water continuously generated in the high-pressure gas storage reservoir 3, and will not cause a significant impact on the overall structural strength of the bottom of the high-pressure gas storage reservoir 3. The embodiment of the present invention also installs a water level monitor 5 at the bottom of the water collection well 4 for real-time monitoring of water level changes in the water collection well 4. The water level monitor 5 has a high-precision sensing function, which can accurately feedback the water volume information in the water collection well 4 and provide data basis for drainage operations. Exemplarily, the model of the water level monitor 5 is DU-LS1200.

[0023] In order to improve the pressure reduction and speed regulation effect, the pressure reduction and speed regulation pipe group of the embodiment of the present invention includes a multi-stage pipeline that is sealed and connected in sequence; the diameter of the multi-stage pipeline gradually decreases from the water collection well 4 toward the power generation module; the pressure reducing valve group is arranged on the first-stage pipeline 6 connected to the water collection well 4.

[0024] In order to make the flow rate of the condensed water output by the step-down speed regulating tube group meet the power generation requirements, the step-down speed regulating tube group of the embodiment of the present invention further includes a venturi tube 9 and a pressure reducing structure 17; wherein the inlet end of the venturi tube 9 is provided with a pressure reducing structure 17, the pressure reducing structure 17 is connected to the last stage pipeline, and the outlet end of the venturi tube 9 extends into the power generation module; the pressure reducing structure 17 includes a stacked porous plate and a honeycomb pressure reducing plate. The honeycomb pressure reducing plate is connected to the last stage pipeline.

[0025] In the embodiment of the present invention, the pressure reducing structure 17 is used to reduce pressure, thereby reducing the pressure at the outlet end of the venturi tube 9. The above-mentioned porous plate is made of 316L stainless steel, which is resistant to high pressure and condensed water corrosion, and is installed at the inlet end of the venturi tube 9. The two are connected by flanges, and it is coaxially arranged with the venturi tube 9. The above-mentioned porous plate is composed of a plurality of single-layer plates stacked together, and the holes between adjacent single-layer plates are staggered. The opening rate of each single-layer plate is set to 45%, the aperture is 25mm, and the stacking thickness is not less than 15mm. After the multiple single-layer plates are stacked, the fluid will collide and rub when the water flows through, realizing energy consumption, which can effectively reduce the water pressure, improve the stability of the water flow, and control the flow rate at the same time.

[0026] For example, the opening rate of a single-layer board is 45%, the pore size is 25 mm and evenly distributed, the thickness is 15 mm, the total thickness of the stacked three layers is 45 mm, and the surface is treated with epoxy resin coating for corrosion protection.

[0027] The honeycomb pressure relief panel is composed of a plurality of single-layer honeycomb panels stacked together, and each single-layer honeycomb panel adopts a hexagonal honeycomb structure. For example, each single-layer honeycomb panel has a pore size of 10 mm and a wall thickness of 2 mm, with a total of two layers. The pore positions between adjacent single-layer honeycomb panels are staggered to obtain a honeycomb pressure relief panel with a total thickness of 30 mm. The honeycomb pressure relief panel with this structure can reduce the water pressure passing through it by 0.75~1.05MPa.

[0028] The present invention achieves a pressure reduction of 1.5-1.8 MPa by combining a porous plate and a honeycomb pressure reducing plate, and further superimposes the pressure reduction of the venturi tube to achieve effective operation of the power generation module. In order to ensure the safe operation of the entire device, the present invention also adds a safety valve 16 at the outlet of the last stage pipeline.

[0029] In the embodiment of the present invention, the throat diameter of the venturi tube 9 is 110 mm to 130 mm, preferably 120 mm; the outlet diameter is 140 mm to 150 mm, preferably 146 mm; the diffusion angle is 6° to 9°, preferably 6°. Exemplarily, the body parameters of the venturi tube 9 are shown in Table 1.

[0030] Table 1 Venturi tube body parameters

[0031] The embodiment of the present invention realizes the pressure reduction and speed regulation of condensed water by a pressure reduction and speed regulation pipe group whose pipe diameter gradually decreases from the water collection well 4 to the power generation module. The structure is simple and the pressure reduction and speed regulation effect is good. The embodiment of the present invention uses a modified epoxy resin adhesive to achieve a sealed connection between multi-stage pipes. The modified epoxy resin adhesive used can achieve a bonding strength of 25MPa at room temperature, and can still reach 20MPa in the range of -40° to 120°, and the shear modulus can reach 1.2GPa.

[0032] The multi-stage pipeline of the embodiment of the present invention is specifically a three-stage pipeline; the ratio of the pipe diameters of the three-stage pipeline is 1:0.75~0.85:0.55~0.65; at the same time, the flow rate of the outlet of the first-stage pipeline 6 is 0.8m 3 / s to 1.2m 3 / s, preferably 1.0m 3 / s, limiting this flow rate can ensure that the flow rate and water pressure at the subsequent third-stage pipeline outlet meet the requirements. After obtaining the flow rate at the first-stage pipeline 6 outlet, the flow rate at the first-stage pipeline 6 outlet can be determined in combination with formula (1).

[0033] (1) In the formula, is the flow rate of condensed water in the first-stage pipeline 6, is the flow rate of condensed water in the first-stage pipeline 6, is the diameter of the first stage pipeline 6.

[0034] For example, to meet the drainage requirements, the diameter D1 of the first-stage pipe 6 is 200 mm, the length L1 is 10 meters, the diameter D2 of the second-stage pipe 7 is reduced to 160 mm, the length L2 is 3 meters; the diameter D3 of the third-stage pipe 8 is further reduced to 120 mm, and the length L3 is 2 meters. The first-stage pipe 6, the second-stage pipe 7, and the third-stage pipe 8 in the embodiment of the present invention are all made of high-pressure resistant and corrosion-resistant stainless steel to ensure stable operation under high-pressure environment.

[0035] In order to avoid pressure fluctuations in the high-pressure gas storage reservoir 3 while ensuring the pressure reduction and speed regulation effect of the pressure reduction and speed regulation pipe group, the pressure reducing valve group of the embodiment of the present invention includes a first pressure reducing valve 14 and a second pressure reducing valve 15; the first pressure reducing valve 14 is arranged at the water inlet of the first-stage pipeline 6; the second pressure reducing valve 15 is arranged at the water outlet of the first-stage pipeline 6. The first pressure reducing valve 14 and the second pressure reducing valve 15 are both electromagnetic pressure reducing valves.

[0036] The above-mentioned first pressure reducing valve 14 and second pressure reducing valve 15 both have fast response and reliable sealing performance, and can work stably under high-pressure environment. When the water level monitor 5 detects that the water volume in the water collection well 4 reaches the volume of the first-stage pipeline 6, the control system issues a command to open the first pressure reducing valve 14 and close the second pressure reducing valve 15 at the same time. At this time, the high-pressure water in the high-pressure gas storage reservoir 3 enters the first-stage pipeline 6 under the action of the pressure difference. After the first-stage pipeline 6 is filled with water, close the first pressure reducing valve 14 to ensure the air tightness in the high-pressure gas storage reservoir 3. Next, open the second pressure reducing valve 15 to allow the high-pressure water to enter the subsequent pipeline. The second pressure reducing valve 15 in the embodiment of the present invention controls the flow rate at the end of the first-stage pipeline 6 to be 0.8m 3 / s to 1.2m 3 / s.

[0037] In order to facilitate the determination of the pressure values ​​in each stage of the pipeline, and then determine the flow rate in each stage of the pipeline, the step-down and speed-regulating tube group of the embodiment of the present invention also includes multiple pressure sensors 13; one pressure sensor 13 is arranged in the first-stage pipeline, that is, a pressure sensor 13 is arranged in the first-stage pipeline 6, a pressure sensor 13 is arranged in the second-stage pipeline 7, and a pressure sensor 13 is arranged in the third-stage pipeline 8, so as to obtain the pressure values ​​in the corresponding pipelines.

[0038] After the flow rate in the first-stage pipeline 6 is determined according to formula (1), the flow rates in the second-stage pipeline 7 and the third-stage pipeline 8 can be determined respectively in combination with the following formula (2).

[0039] (2) In the formula, is the elevation of the first-stage pipeline 6, is the pressure value in the first-stage pipeline 6, obtained according to the pressure sensor 13 on the first-stage pipeline 6, is the density of condensed water, is the acceleration due to gravity, is the flow rate of condensed water in the first-stage pipeline 6, is the elevation of the second-stage pipeline 7, is the pressure value in the second-stage pipeline 7, obtained according to the pressure sensor 13 on the second-stage pipeline 7, is the flow rate of condensed water in the second-stage pipeline 7, It is the head loss between the first-stage pipeline 6 and the second-stage pipeline 7.

[0040] After obtaining the flow velocity in the second-stage pipeline 7, the parameters related to the first-stage pipeline 6 on the left side of formula (2) are replaced with the parameters related to the second-stage pipeline 7, and the parameters related to the second-stage pipeline 7 on the right side of formula (2) are replaced with the parameters related to the third-stage pipeline 8, so that the flow velocity in the third-stage pipeline 8 can be obtained.

[0041] Exemplarily, in the case of a three-stage pipeline, the flow rates of each stage are shown in Table 2.

[0042] Table 2 Condensate flow rate in the tertiary pipeline

[0043] The embodiment of the present invention ignores the height difference change and introduces Darcy-Weisbach to calculate the friction loss, and obtains that the total pressure loss of the three-stage pipeline is about 1.2MPa. In the purely theoretical calculation, the flow rate in the third-stage pipeline 8 is far beyond the achievable range of the project, which cannot be achieved in conventional pipelines. The pressure cannot be reduced to atmospheric pressure only through the pipeline, and it is necessary to debug in combination with the pressure reducing valve group so that the outlet water pressure is close to the atmospheric pressure P0.

[0044] The pressure reducing valve group of the embodiment of the present invention cooperates as follows: Initial pressure regulation: After the high-pressure condensate enters the first-stage pipeline 6, the pressure is initially regulated by the second pressure reducing valve 15 to reduce the pressure in the second-stage pipeline 7 to a suitable range, such as 5 MPa to 6 MPa, so as to reduce the pressure burden of subsequent pipelines and avoid excessive flow rate.

[0045] Pipeline decompression and pressure monitoring: High-pressure condensed water passes through multi-stage pipelines in sequence, and the pressure is reduced in the pipelines by relying on changes in pipe diameter and the characteristics of the water flow itself. The pressure sensors 13 on each stage of the pipeline monitor the pressure changes in real time.

[0046] The venturi tube 9 and the pressure reducing structure 17 adjust the pressure and flow rate: the venturi tube 9 and the pressure reducing structure 17 are installed between the end of the third-stage pipeline 8 and the power generation module, wherein the pressure reducing structure 17 includes a stacked porous plate and a honeycomb pressure reducing plate. The combination of the porous plate and the honeycomb pressure reducing plate can reduce the pressure by 1.5~1.8MPa. The pressure reduction of the venturi tube is further superimposed to realize the effective operation of the power generation module. At the same time, the combination of the venturi tube 9 and the pressure reducing structure 17 can also reduce the water flow velocity entering the power generation module, ensuring that the flow velocity is within the safe range that the equipment can bear, while improving the stability of the water flow. The venturi tube 9 is made of the same high-strength, high-pressure-resistant, and corrosion-resistant stainless steel as the pipeline to adapt to the working environment of the system.

[0047] Secondary pressure regulation: When the high-pressure condensate reaches the end of the third-stage pipeline 8, the control system automatically adjusts the opening of the second pressure reducing valve 15 according to the data fed back by the pressure sensor 13, and performs secondary fine adjustment of the pressure to ensure that the water pressure entering the power generation module is close to the atmospheric pressure P0, meeting the working requirements of subsequent equipment.

[0048] Feedback and adjustment: During the entire drainage process, the pressure sensor 13 continuously monitors the pressure in the pipeline, and the control system adjusts the opening of the pressure reducing valve in real time according to the pressure change to achieve stable pressure control.

[0049] The power generation module of the embodiment of the present invention includes an energy conversion submodule 11, which includes a worm gear generator, a rotating shaft and a plurality of swirl blades; the plurality of swirl blades are evenly arranged on the rotating shaft, and are used to drive the rotating shaft to rotate under the action of the output water flow of the step-down speed regulating tube group; the worm gear generator is connected to one end of the rotating shaft, and is used to convert the mechanical energy of the rotating shaft into electrical energy when the rotating shaft rotates. The connection method between the above-mentioned worm gear generator and the rotating shaft can be a keyway connection, a coupling connection, etc.

[0050] In the embodiment of the present invention, the radius of curvature of each swirl blade is 140 mm to 160 mm; the angle of each swirl blade is 40° to 50°. In addition, the outlet of the Venturi tube 9 in the step-down speed regulating tube assembly is tilted downward, and the angle between the outlet and the horizontal line is 25° to 35°, preferably 30°. The above parameter restrictions can enhance the swirl effect and improve the energy conversion efficiency.

[0051] In order to avoid the splashing of condensed water and ensure the energy conversion efficiency, the power generation module of the embodiment of the present invention further includes a cyclone energy dissipation barrel 10 ; at this time, the energy conversion submodule 11 is arranged in the cyclone energy dissipation barrel 10 .

[0052] Exemplarily, the swirl energy dissipation barrel 10 adopts a cylindrical cavity with a cavity diameter of 800mm and a height of 2400mm. A tangential water inlet and a self-retained drain outlet are arranged in the middle and bottom of the cavity. The self-retained drain outlet is connected to the self-retained drain pipe 12. The swirl energy dissipation barrel 10 is made of high-strength aluminum alloy and the surface is treated for wear resistance. The swirl blades are 10 arc-shaped stainless steel blades with a thickness of 10mm and a radius of curvature of 150mm. The angle between the swirl blades and the tangent direction of the rotating shaft is 45°, which enhances the swirl effect and improves the energy conversion efficiency. The outlet position of the venturi tube 9 is located in the middle and upper part of the swirl energy dissipation barrel 10, 0.3 meters away from the top of the barrel, and the outlet angle is set to 30° with the horizontal line direction of the center of the swirl energy dissipation barrel 10, so that a relatively stable and reasonable force can be generated on the swirl blades, so that the rotation of the rotating shaft is more stable, and a relatively stable power output is guaranteed. A worm gear generator is connected to the shaft. When the shaft rotates, it drives the turbine generator to generate electricity. The generated electrical energy is transmitted to the battery through a wire for storage and is used to drive the pressure reducing valve group or reservoir area monitoring equipment. The water flow after energy dissipation is discharged through the gravity drainage pipe.

[0053] Through numerical simulation and theoretical calculation analysis, the present invention calculates the pressure and flow rate of each level of pipelines for the data of 10MPa drainage, power generation, pressure, flow rate, etc., and statistics the power generation as shown in Table 3.

[0054] Table 3 Numerical simulation and theoretical calculation analysis results

[0055] The high-pressure gas storage condensate power generation device of the present invention has the following advantages: Improved drainage efficiency and stability: Through the combined action of the water collection well 4, the pressure-reducing speed-regulating pipe group and the pressure reducing valve group, condensate can be collected and electricity can be generated during the operation of the high-pressure gas storage reservoir 3. The pressure fluctuation in the gas storage reservoir is small, thereby improving the overall operating efficiency.

[0056] Energy recovery and self-power supply capability: The kinetic energy of drainage is converted into electrical energy to meet the power needs of 3 auxiliary equipment in the high-pressure gas storage reservoir. No external power supply is required. The electrical energy stored in capacitors drives valves and sensors, reducing system energy consumption.

[0057] Engineering economic optimization: low manufacturing cost and reduced maintenance cost through modular design.

[0058] Optimized safety and environmental performance: high-pressure water is converted into low-pressure and low-speed water flow to avoid drainage shock that damages the environment.

[0059] The present invention adopts an integrated drainage-energy dissipation-power generation design led by mechanical structure innovation, which not only solves the core problem of drainage stability and safety of high-pressure gas storage reservoir 3, but also opens up a new path for micro energy recovery of energy storage system, which has significant technological advancement and commercial promotion value.

[0060] The above are only several embodiments of the present invention and are not intended to limit the present invention in any form. Although the present invention is disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the profession, without departing from the scope of the technical solution of the present invention, using the above disclosed technical content to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A high-pressure gas storage condensate power generation device, characterized in that: It includes a water collection well, a pressure-reducing speed regulating pipe group, a power generation module and a pressure reducing valve group; The water collection well is arranged at the bottom of the high-pressure gas storage reservoir and is communicated with the high-pressure gas storage reservoir, and is used to collect condensed water in the high-pressure gas storage reservoir; One end of the pressure-reducing and speed-regulating pipe group is connected to the water collection well, and the other end extends into the power generation module, so as to reduce the pressure and speed of the condensed water in the high-pressure gas storage reservoir and then input it into the power generation module; The pressure reducing valve group is arranged on the pressure reducing and speed regulating pipe group, and is used for opening and closing according to the water level of the condensed water in the water collection well.

2. The high-pressure gas storage condensate power generation device according to claim 1 is characterized in that: The step-down speed regulating tube group comprises a plurality of pipelines which are sealed and connected in sequence; The diameter of the multi-stage pipeline gradually decreases from the water collection well toward the power generation module; The pressure reducing valve group is arranged on the first-stage pipeline connected to the water collecting well.

3. The high-pressure gas storage condensate power generation device according to claim 2 is characterized in that: The multi-stage pipeline is specifically a 3-stage pipeline; The ratio of the pipe diameters of the three-level pipelines is 1:0.75~0.85:0.55~0.65; The flow rate of the first-stage pipe outlet is 0.8m 3 / s to 1.2m 3 / s.

4. The high-pressure gas storage condensate power generation device according to claim 3 is characterized in that: The pressure reducing valve group comprises a first pressure reducing valve and a second pressure reducing valve; The first pressure reducing valve is arranged at the water inlet of the first-stage pipeline; The second pressure reducing valve is arranged at the water outlet of the first-stage pipeline.

5. The high-pressure gas storage condensate power generation device according to claim 2 is characterized in that: The pressure-reducing speed-regulating tube group further includes a venturi tube and a pressure-reducing structure; The inlet end of the venturi tube is provided with a decompression structure, the decompression structure is connected to the last stage pipeline, and the outlet end of the venturi tube extends into the power generation module; The decompression structure comprises a porous plate and a honeycomb decompression plate which are stacked.

6. The high-pressure gas storage condensate power generation device according to claim 5, characterized in that: The throat diameter of the venturi tube is 110 mm to 130 mm, the outlet diameter is 140 mm to 150 mm, and the diffusion angle is 6° to 9°.

7. The high-pressure gas storage condensate power generation device according to claim 5 or 6, characterized in that: The power generation module includes an energy conversion submodule, and the energy conversion submodule includes a worm gear generator, a rotating shaft and a plurality of swirl blades; The plurality of swirl blades are evenly arranged on the rotating shaft, and are used to drive the rotating shaft to rotate under the action of the water flow output by the step-down speed regulating tube group; The worm gear generator is connected to one end of the rotating shaft and is used for converting mechanical energy when the rotating shaft rotates into electrical energy.

8. The high-pressure gas storage condensate power generation device according to claim 7 is characterized in that: The radius of curvature of each swirl blade is 140 mm to 160 mm; The angle of each swirl blade is 40° to 50°.

9. The high-pressure gas storage condensate power generation device according to claim 7, characterized in that: The water outlet of the venturi tube is inclined downward, and the angle between the outlet and the horizontal line is 25° to 35°.

10. The high-pressure gas storage condensate power generation device according to claim 2, characterized in that: The step-down speed regulating tube group also includes a plurality of pressure sensors; A pressure sensor is arranged in the primary pipeline to obtain the pressure value in the corresponding pipeline.

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