Gas reservoir pressure regulation system and method

Abstract

The embodiment of the application discloses a kind of gas storage gas pressure regulating system and method, gas storage gas pressure regulating system includes gas storage, gas storage includes inner membrane and outer membrane, and interlayer cavity is formed between inner membrane and outer membrane;Pressure measuring device, pressure measuring device is used to obtain the gas pressure information in interlayer cavity;Pressure relief assembly is connected to outer membrane;Pressure relief assembly includes main part, and inner door and outer door connected to the opposite ends of main part, and main part, inner door and outer door are jointly enclosed to form pressure relief passage;Wherein, inner door is used to communicate interlayer cavity and pressure relief passage when opening state;Outer door is used to communicate pressure relief passage and atmosphere when opening state;Pressure relief assembly is used to when the gas pressure information in interlayer cavity meets first preset information, outer door and inner door are both opening state, to communicate interlayer cavity, pressure relief passage and atmosphere.The embodiment of the application can realize the rapid pressure relief of gas storage interlayer cavity, guarantee interlayer pressure difference in safe and reliable range.

Description

Technical Field

[0001] This invention relates to the field of gas storage technology, and in particular to a gas storage pressure regulation system and method. Background Technology

[0002] Carbon dioxide energy storage technology is a gas-liquid interconversion two-state co-processing energy storage technology that is independent of geological conditions, has a long lifespan, high reliability, and low cost. It can be used to support peak shaving and valley filling, frequency regulation, phase regulation, and to provide backup power for the power grid. In the energy storage phase, the system uses surplus electrical energy to compress, cool, and condense atmospheric carbon dioxide in the gas storage tank into a liquid state, which is then stored in the energy storage container (i.e., the liquid tank). In the energy release phase, the liquid carbon dioxide is vaporized and heated by the energy release components to drive a turbine to perform work and release energy. After the work is completed, the carbon dioxide returns to the gas storage tank to prepare for the next energy storage cycle. Carbon dioxide energy storage systems typically employ a double-membrane structure gas storage tank, with an interlayer cavity formed between the inner and outer membranes. During operation, the interlayer cavity needs to be filled with gas to maintain its shape. During the energy release, a large amount of carbon dioxide rushes into the gas storage chamber, causing the pressure difference between the interlayer chamber and the outside atmosphere (hereinafter referred to as interlayer pressure difference) to rise rapidly. Existing ventilation devices are prone to mechanical failure, making it difficult for the gas in the interlayer chamber to be discharged quickly, which may cause accidents such as gas storage rupture and explosion. Summary of the Invention

[0003] Therefore, in order to solve the problem that the rapid increase in interlayer pressure difference in the prior art may cause the gas storage tank to rupture and explode, the present invention provides a gas storage tank pressure regulation system and method that can quickly discharge the gas in the interlayer cavity through a pressure relief component, realize the rapid pressure relief of the interlayer cavity, ensure that the interlayer pressure difference is within a safe and reliable range, and prevent the occurrence of safety accidents such as gas storage tank rupture and explosion.

[0004] An embodiment of the present invention provides a gas storage pressure regulation system comprising: a gas storage tank, the gas storage tank including an inner membrane and an outer membrane, wherein a cavity is formed between the inner membrane and the outer membrane; a pressure measuring device for acquiring gas pressure information within the cavity; and a pressure relief assembly connected to the outer membrane; the pressure relief assembly including a main body and an inner door and an outer door connected to opposite ends of the main body, the main body, the inner door, and the outer door together forming a pressure relief channel; wherein the inner door is used to connect the cavity and the pressure relief channel when open; the outer door is used to connect the pressure relief channel and the atmosphere when open; and the pressure relief assembly is configured such that when the gas pressure information within the cavity conforms to a first preset information, both the outer door and the inner door are open, thereby connecting the cavity, the pressure relief channel, and the atmosphere.

[0005] In some embodiments, the pressure measuring device includes a pressure sensor for detecting the pressure within the interlayer cavity.

[0006] In some embodiments, the number of pressure sensors is multiple; the air pressure information includes readings from multiple pressure sensors; when the number of first sensors is greater than or equal to a first preset number, the air pressure information conforms to the first preset information, and the first sensor is a pressure sensor whose reading is greater than or equal to a first preset pressure.

[0007] In some embodiments, the inner door remains closed when the air pressure information in the interlayer cavity does not conform to the first preset information, so as to isolate the interlayer cavity and the pressure relief channel; and / or, the inner door and the outer door are interlocked to operate synchronously.

[0008] In some embodiments, the pressure relief assembly further includes a flexible connection portion connected between the outer membrane and the inner door; a connection channel is formed within the flexible connection portion, and the connection channel communicates with the interlayer cavity; the inner door is used to connect the connection channel and the pressure relief channel when in an open state.

[0009] In some embodiments, the outer membrane is provided with an exhaust port communicating with the interlayer cavity, and the gas storage pressure regulation system further includes an exhaust device connected to the exhaust port. The exhaust device is used to discharge the gas in the interlayer cavity to the atmosphere when the gas pressure information in the interlayer cavity meets the second preset information.

[0010] In some embodiments, the flow cross-sectional area of ​​the pressure relief channel is larger than the flow cross-sectional area of ​​the exhaust port.

[0011] In some embodiments, an air supply device is further included, which is connected to the outer membrane and is used to fill the interlayer cavity with gas.

[0012] An embodiment of the present invention also provides a gas storage pressure regulation method, based on the gas storage pressure regulation system as described in any of the preceding claims. The gas storage pressure regulation method includes: when the gas pressure information in the interlayer cavity obtained by the pressure measuring device meets the first preset information, opening the inner door and the outer door to connect the interlayer cavity, the pressure relief channel and the atmosphere.

[0013] In some embodiments, the outer membrane is provided with an exhaust port communicating with the interlayer cavity, and the gas storage pressure regulation system further includes an exhaust device connected to the exhaust port; the gas storage pressure regulation method further includes: when the gas pressure information in the interlayer cavity obtained by the pressure measuring device meets the second preset information, opening the exhaust device to discharge the gas in the interlayer cavity to the atmosphere.

[0014] As can be seen from the above, the above embodiments of the present invention can achieve one or more of the following beneficial effects: by setting a pressure measuring device and a pressure relief component, the pressure measuring device can obtain the gas pressure information in the interlayer cavity, so that the pressure relief component can take corresponding actions according to the gas pressure information. When the interlayer pressure difference rises rapidly, the gas in the interlayer cavity can be quickly discharged through the pressure relief channel to ensure that the pressure in the interlayer cavity is within a safe and reliable range and to prevent safety accidents such as gas storage tank rupture. Attached Figure Description

[0015] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0016] Figure 1 This is a top view of a gas storage pressure regulation system provided in one embodiment of the present invention.

[0017] Figure 2 for Figure 1 The diagram shows a three-dimensional structural schematic of the gas pressure regulation system of the gas storage facility.

[0018] Figure 3 for Figure 1 The diagram shows a partial side view of the gas pressure regulation system of the gas storage facility.

[0019] Figure 4 This is a top view of a gas storage pressure regulation system provided in another embodiment of the present invention.

[0020] Figure 5 This is a top view of a gas storage pressure regulation system provided in another embodiment of the present invention.

[0021] Figure 6 This is a top view of a gas storage pressure regulation system provided in another embodiment of the present invention.

[0022] [Explanation of Labels in the Attached Image]

[0023] 10: Gas storage tank; 11: Inner membrane; 12: Outer membrane; 13: Interlayer cavity; 14: Receiving cavity; 20: Pressure measuring device; 21: Pressure sensor; 30: Pressure relief assembly; 31: Main body; 32: Inner door; 33: Outer door; 34: Pressure relief channel; 35: Flexible connection; 351: Connection channel; 41: Exhaust device; 42: Air supply device; 50: Control assembly. Detailed Implementation

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] To enable those skilled in the art to better understand the technical solutions of the present invention, 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 should fall within the scope of protection of the present invention.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] It should also be noted that the division of multiple embodiments in this invention is only for the convenience of description and should not constitute a special limitation. Features in various embodiments can be combined and referenced in each other without contradiction.

[0028] like Figures 1 to 3 As shown, an embodiment of the present invention provides a gas storage pressure regulation system including a gas storage tank 10, a pressure measuring device 20, and a pressure relief component 30.

[0029] Among them, reference Figure 1The gas storage tank 10 includes, for example, an inner membrane 11 and an outer membrane 12, with a sandwiched cavity 13 formed between the inner membrane 11 and the outer membrane 12. The inner membrane 11 and the outer membrane 12 are flexible membrane structures. During operation of the carbon dioxide energy storage system, gas needs to be introduced into the sandwiched cavity 13 to maintain the shape of the gas storage tank 10. For example, a receiving cavity 14 is also formed within the inner membrane 11. In some specific embodiments, the gas storage tank 10 also includes a ground membrane, with the inner membrane 11 and the ground membrane jointly defining the receiving cavity 14. During energy release, carbon dioxide gas is input from the energy release component into the receiving cavity 14 for storage; during energy storage, carbon dioxide gas is output from the receiving cavity 14 to the energy storage component for compression and energy storage. For example, initially, the pressure (i.e., gas pressure) within the receiving cavity 14 is m, and the pressure within the sandwiched cavity 13 is n. When a large amount of carbon dioxide gas is introduced into the containment cavity 14, the pressure in the containment cavity 14 increases to m+x. Without expelling the gas from the interlayer cavity 13, the relative pressure between the containment cavity 14 and the interlayer cavity 13 remains unchanged, and the pressure inside the interlayer cavity 13 will rise to n+x. This causes the pressure difference between the interlayer cavity 13 and the outside atmosphere to increase.

[0030] The pressure measuring device 20 is used to acquire air pressure information within the interlayer cavity 13. The air pressure information reflects the magnitude and / or changes in air pressure within the interlayer cavity 13, such as pressure values ​​and pressure distribution data. For example, the pressure measuring device 20 may include a liquid column pressure gauge, a mechanical pressure gauge, a piston pressure gauge, or an electric pressure gauge. Electric pressure gauges may include pressure sensors, which can be categorized as strain gauge pressure sensors, resistive pressure sensors, capacitive pressure sensors, piezoresistive pressure sensors, and piezoelectric pressure sensors.

[0031] The pressure relief assembly 30 is connected to the outer membrane 12. The pressure relief assembly 30 includes a main body 31, and an inner door 32 and an outer door 33 connected to opposite ends of the main body 31. The main body 31, the inner door 32, and the outer door 33 together form a pressure relief channel 34. Doorways are formed at opposite ends of the main body 31, and the inner door 32 and the outer door 33 are respectively disposed within their respective doorways. The inner door 32 and the outer door 33 can be, for example, roller shutters, lifting doors, or mechanical quick-opening doors. The inner door 32 and the outer door 33 are, for example, 3-4 meters high and 3-4 meters wide; in some embodiments, the inner door 32 and the outer door 33 are 2-8 meters high and 2-8 meters wide. (See reference...) Figure 3 When the pressure relief assembly 30 is installed on the ground, the pressure relief channel 34 can be defined by the ground, the main body 31, the inner door 32 and the outer door 33.

[0032] The inner door 32 can selectively connect or isolate the interlayer cavity 13 and the pressure relief channel 34. Specifically, the inner door 32 connects the interlayer cavity 13 and the pressure relief channel 34 when it is open. When the inner door 32 is closed, it isolates the interlayer cavity 13 and the pressure relief channel 34. When the inner door 32 is open, gas in the interlayer cavity 13 can enter the pressure relief channel 34 through the corresponding opening of the inner door 32. The outer door 33 can selectively connect or isolate the pressure relief channel 34 and the atmosphere. Specifically, the outer door 33 connects the pressure relief channel 34 and the atmosphere when it is open. When the outer door 33 is closed, it isolates the pressure relief channel 34 and the atmosphere. When the outer door 33 is open, gas in the pressure relief channel 34 can be discharged to the atmosphere through the corresponding opening of the outer door 33. That is, the inner door 32 is closer to the outer membrane 12 than the outer door 33.

[0033] The pressure relief assembly 30 is configured to open both the outer door 33 and the inner door 32 when the air pressure information in the interlayer cavity 13 meets the first preset information, thereby connecting the interlayer cavity 13, the pressure relief channel 34, and the atmosphere. That is, when the air pressure information in the interlayer cavity 13 meets the first preset information, the gas in the interlayer cavity 13 can be discharged to the atmosphere through the pressure relief channel 34.

[0034] In this embodiment, for example, the actual pressure inside the interlayer cavity 13 can be determined based on air pressure information. The first preset information can be set according to the pressure-bearing threshold of the interlayer cavity 13. For example, a first preset pressure lower than the pressure-bearing threshold can be set. When the actual pressure inside the interlayer cavity 13 is determined to be greater than or equal to the first preset pressure based on air pressure information, the air pressure information matches the first preset information. At this time, the actual pressure inside the interlayer cavity 13 is close to the pressure-bearing threshold. If the air in the interlayer cavity 13 is not vented, it may cause the inner membrane 11 or the outer membrane 12 to rupture.

[0035] Based on the structure of the gas storage pressure regulation system described above, the pressure status within the interlayer cavity 13 can be determined by comparing the pressure information obtained by the pressure measuring device 20 with the first preset information. For example, when a large amount of gas rushes into the receiving cavity 14, the pressure within the interlayer cavity 13 increases rapidly. When the pressure increases to the point where the pressure information obtained by the pressure measuring device 20 matches the first preset information, the gas within the interlayer cavity 13 can be quickly discharged through the pressure relief channel 34, preventing accidents such as gas storage rupture and explosion caused by the rapid increase in pressure within the interlayer cavity 13. For each gas storage 10, one or more pressure relief components 30 can be installed. By associating the pressure measuring device 20 with the pressure relief components 30, the pressure measuring device 20 is not limited to its original pressure monitoring function; it can also further automate the control of the pressure relief components 30, achieving more intelligent and safer operation.

[0036] Specifically, refer to Figure 4The pressure measuring device 20 includes a pressure sensor 21, which is used to detect the pressure within the interlayer cavity 13. In some embodiments, the pressure sensor 21 can be an absolute pressure sensor, used to detect the absolute pressure within the interlayer cavity 13. In some embodiments, the pressure sensor 21 can be a gauge pressure sensor, used to detect the gauge pressure within the interlayer cavity 13. Absolute pressure is the pressure relative to zero pressure, and gauge pressure is the portion of the absolute pressure exceeding the surrounding atmospheric pressure. In some embodiments, the pressure sensor 21 can be a differential pressure sensor, used to detect the relative pressure difference between the interlayer cavity 13 and the external atmosphere. The pressure measuring device 20 can include any one or more of the above-mentioned absolute pressure sensor, gauge pressure sensor, and differential pressure sensor. According to the method of converting pressure into electrical signal, the pressure sensor 21 can be a variable pressure sensor, a resistive pressure sensor, a capacitive pressure sensor, a piezoresistive pressure sensor, a piezoelectric pressure sensor, etc. By setting the pressure sensor 21, the pressure within the interlayer cavity 13 can be sensed by the pressure sensor 21 and converted into an outputtable electrical signal to obtain the air pressure information of the interlayer cavity 13, facilitating automated control.

[0037] More specifically, such as Figure 4 As shown, there are multiple pressure sensors 21, and the air pressure information of the interlayer cavity 13 includes the readings of multiple pressure sensors 21. When the number of first sensors is greater than or equal to a first preset number, the air pressure information of the interlayer cavity 13 conforms to the first preset information. Here, the first sensor is a pressure sensor whose reading is greater than or equal to the first preset pressure. The first preset pressure can be set, for example, according to the pressure-bearing capacity of the inner membrane 11 or outer membrane 12 of the gas storage tank 10. It can be understood that the first preset information includes a first preset pressure and a first preset number. When the readings of any of the multiple pressure sensors 21, or more than the first preset number, are all greater than or equal to the first preset pressure, it can be considered that the actual pressure in the interlayer cavity 13 is greater than or equal to the first preset pressure, that is, the air pressure information conforms to the first preset information, and pressure needs to be released through the pressure relief component 30. For example, the pressure measuring device 20 includes i pressure sensors 21, the first preset number is j, and if the readings of k pressure sensors 21 among the i pressure sensors 21 are greater than or equal to the first preset pressure, then these k pressure sensors 21 are called the first sensors, and the number of first sensors is k. When k is greater than or equal to j, it can be determined that the actual pressure inside the interlayer cavity 13 is greater than or equal to the first preset pressure, and the air pressure information matches the first preset information. This setting enables more accurate detection of pressure changes within the interlayer cavity 13. Multiple pressure sensors 21 are respectively set for different areas of the interlayer cavity 13, and the actual pressure within the interlayer cavity 13 can be determined by the readings of multiple pressure sensors 21, resulting in more accurate pressure sensing within the interlayer cavity 13 and reducing the occurrence of false judgments.

[0038] In some embodiments, when the air pressure information in the interlayer cavity 13 does not conform to the first preset information, both the inner door 32 and the outer door 33 are closed. Alternatively, one of the inner door 32 and the outer door 33 may be closed while the other is open. The pressure relief channel 34 can also be used as a maintenance channel or a transportation channel. For example, maintenance personnel can enter the interlayer cavity 13 through the pressure relief channel 34 to perform maintenance and other work. Before entering the interlayer cavity 13, the inner door 32 is closed, and the outer door 33 is opened, allowing maintenance personnel to enter the pressure relief channel 34 through the outer door 33. After entering the pressure relief channel 34, the outer door 33 is closed, and the inner door 32 is opened, allowing maintenance personnel to enter the interlayer cavity 13 through the inner door 32. When maintenance personnel evacuate from the interlayer cavity 13, the outer door 33 is kept closed first, the inner door 32 is opened, and the maintenance personnel enter the pressure relief channel 34 through the inner door 32 and then close the inner door 32. Finally, the outer door 33 is opened, and the maintenance personnel leave through the pressure relief channel 34 through the outer door 33 and can then close the outer door 33.

[0039] In some embodiments, the inner door 32 remains closed when the air pressure information in the interlayer cavity 13 does not conform to a first preset information, thereby isolating the interlayer cavity 13 from the pressure relief channel 34. The outer door 33 can be in a closed state or an open state. With the above settings, the risk of gas leakage from the pressure relief assembly 30 in the interlayer cavity 13 can be reduced when the air pressure information in the interlayer cavity 13 does not conform to the first preset information and rapid venting is not required.

[0040] In some embodiments, the inner door 32 and the outer door 33 are interlocked to operate synchronously; specifically, the inner door 32 and the outer door 33 are interlocked to open synchronously. This allows the inner door 32 and the outer door 33 to open rapidly when the air pressure information within the interlayer cavity 13 matches the first preset information, achieving the effect of quickly connecting the interlayer cavity 13 to the atmosphere through the pressure relief channel 34, thus enabling faster pressure relief. Specifically, the inner door 32 and the outer door 33 can also be interlocked to close synchronously, so that when the air pressure information within the interlayer cavity 13 does not match the first preset information, the inner door 32 and the outer door 33 close rapidly, reducing the possibility of excessively low air pressure within the interlayer cavity 13 due to excessive gas discharge.

[0041] In some embodiments, refer to Figure 3The pressure relief assembly 30 also includes a flexible connection part 35, which connects the outer membrane 12 and the inner door 32. A connection channel 351 is formed within the flexible connection part 35, communicating with the interlayer cavity 13. Specifically, the inner door 32 connects the connection channel 351 and the pressure relief channel 34 when open. The flexible connection part 35 can, for example, be made of the same or similar material as the outer membrane 12, forming a flexible duct-like structure between the outer membrane 12 and the inner door 32. When the inner door 32 is open, gas in the interlayer cavity 13 can enter the pressure relief channel 34 through the connection channel 351 and the inner door 32. Since the outer membrane 12 fluctuates slightly with pressure changes in the interlayer cavity 13, using the flexible connection part 35 between the inner door 32 and the outer membrane 12 reduces the risk of leakage caused by tearing of the outer membrane 12 when the inner door 32 is directly connected to it. This improves the sealing performance of the connection between the pressure relief assembly 30 and the outer membrane 12, ensuring safe and stable operation.

[0042] In some embodiments, such as Figure 5 As shown, the outer membrane 12 has an exhaust port 121 communicating with the interlayer cavity 13. The gas storage pressure regulation system also includes an exhaust device 41 connected to the exhaust port 121. The exhaust device 41 is used to discharge the gas in the interlayer cavity 13 to the atmosphere when the gas pressure information in the interlayer cavity 13 meets the second preset information. The second preset information can be set according to the normal operating pressure of the interlayer cavity 13, for example, a second preset pressure is set, which is, for example, higher than the normal operating pressure of the interlayer cavity 13 and lower than the pressure-bearing threshold of the interlayer cavity 13. When the actual pressure in the interlayer cavity 13 is determined to be greater than or equal to the second preset pressure based on the gas pressure information, the gas pressure information in the interlayer cavity 13 meets the second preset information. The exhaust device 41 can be, for example, a centrifugal fan. The inlet of the exhaust device 41 is connected to the exhaust port 121, and the outlet is connected to the atmosphere. When the exhaust port 121 is circular, the inner diameter of the exhaust port 121 is, for example, 0.5 to 2 meters. When the exhaust vent 121 is rectangular, its length and width range from 0.5 to 2 meters. By installing the exhaust device 41, gas within the interlayer cavity 13 can be discharged to the atmosphere when the pressure inside the cavity 13 rises, thus maintaining the pressure within the cavity 13. When rapid pressure relief of the interlayer cavity 13 is achieved through the pressure relief assembly 30, gas can be discharged from the cavity 13 via the exhaust device 41 to assist in pressure relief. Multiple exhaust devices 41 can be used, and different numbers can be activated according to different exhaust requirements. For example, as the pressure inside the interlayer cavity 13 gradually increases, the number of activated exhaust devices 41 can be gradually increased.

[0043] In some embodiments, specifically, the number of pressure sensors 21 is multiple. When the number of second pressure sensors is greater than or equal to a second preset number, the air pressure information in the interlayer cavity 13 conforms to the second preset information. The second pressure sensors are those whose readings are greater than or equal to the second preset pressure. The second preset number may be equal to or different from the aforementioned first preset number. The second preset pressure is less than or equal to the aforementioned first preset pressure, and the second preset pressure can be set according to the normal operating pressure of the interlayer cavity 13. It can be understood that the second preset information includes the second preset pressure and the second preset number. When the readings of any of the multiple pressure sensors 21, or more than the second preset number, are all greater than or equal to the second preset pressure, the actual pressure in the interlayer cavity 13 can be considered greater than or equal to the second preset pressure, i.e., the air pressure information conforms to the second preset information. For example, the pressure measuring device 20 includes i pressure sensors 21, the second preset number is y, and z of the i pressure sensors 21 have readings greater than or equal to the second preset pressure. These z pressure sensors 21 are then referred to as second sensors, and the number of second sensors is z. When z is greater than or equal to y, it can be determined that the actual pressure inside the interlayer cavity 13 is greater than or equal to the second preset pressure, and the gas pressure information conforms to the first preset information. For example, before the actual pressure inside the interlayer cavity 13 reaches the second preset pressure (not conforming to the second preset information), it conforms to the normal operating pressure of the interlayer cavity 13, and neither the exhaust device 41 nor the pressure relief component 30 needs to discharge the gas inside the interlayer cavity 13. When the actual pressure inside the interlayer cavity 13 reaches the second preset pressure but is less than the first preset pressure (conforming to the second preset information), it exceeds the normal operating pressure of the interlayer cavity 13 but has not yet reached the pressure threshold of the interlayer cavity 13, and the gas inside the interlayer cavity 13 can be discharged through the exhaust device 41. At this time, there is no need to relieve pressure through the pressure relief component 30. When the actual pressure inside the interlayer cavity 13 reaches or exceeds the first preset pressure (conforming to the second preset information), it is necessary to quickly relieve pressure in the interlayer cavity 13 through the pressure relief component 30, and the exhaust device 41 can play an auxiliary role in relieving pressure.

[0044] In some embodiments, the flow cross-sectional area of ​​the pressure relief channel 34 is larger than that of the exhaust port 121. The flow cross-section is a section perpendicular to the gas flow direction, and the flow cross-sectional area of ​​the pressure relief channel 34 is, for example, more than four times that of the exhaust port 121. The larger flow cross-sectional area of ​​the pressure relief channel 34 compared to the exhaust device 41 allows the pressure relief channel 34 to discharge a larger volume of gas in the same amount of time. Even when the rate of increase in gas pressure within the interlayer cavity 13 exceeds the exhaust capacity of the exhaust device 41, or when the exhaust device 41 malfunctions, rapid pressure relief of the interlayer cavity 13 can still be achieved solely through the pressure relief channel 34.

[0045] In some embodiments, refer to Figure 6The gas storage pressure regulation system also includes an air supply device 42, which is connected to the outer membrane 12 and is used to fill the interlayer cavity 13 with gas. The air supply device 42 can be, for example, a centrifugal fan. The air inlet of the air supply device 42 is connected to the atmosphere, and the air outlet is connected to the outer membrane 12. Gas can be filled into the interlayer cavity 13 through the air supply device 42 to support the outer membrane 12. For example, when the gas in the receiving cavity 14 is discharged, the inner membrane 11 will gradually collapse, the volume of the receiving cavity 14 will gradually decrease, and the volume of the interlayer cavity 13 will gradually increase, which will cause the pressure in the interlayer cavity 13 to decrease. The air supply volume can be increased by the air supply device 41, for example, by starting more air supply devices 41 or increasing the operating frequency of the air supply devices 41, to supplement more gas into the interlayer cavity 13, so as to maintain the pressure in the interlayer cavity 13 and maintain the shape of the outer membrane 12. When gas is stored in the receiving cavity 14, the inner membrane 11 is gradually expanded, and the volume of the interlayer cavity 13 decreases, which will cause the pressure in the interlayer cavity 13 to increase. When the gas pressure information in the interlayer cavity 13 meets the second preset information, the exhaust device 41 opens to discharge the gas in the interlayer cavity 13 to the atmosphere, which can maintain the pressure balance in the interlayer cavity 13. When the gas pressure information in the interlayer cavity 13 meets the first preset information, both the inner door 32 and the outer door 33 in the pressure relief assembly 30 open, and the gas in the interlayer cavity 13 is discharged to the atmosphere through the pressure relief channel 34, which can prevent the outer membrane 11 from rupturing due to excessive pressure in the interlayer cavity 13.

[0046] In some embodiments, the gas storage pressure regulation system further includes a control component 50, which is a controller that controls the devices in the gas storage pressure regulation system, including but not limited to a central processing unit, a readable storage medium, a controller, a PLC control unit, etc.

[0047] For example, the control component 50 is electrically connected to the pressure measuring device 20 and the pressure relief component 30, respectively. The control component 50 is used to receive the air pressure information of the interlayer cavity 13 obtained by the pressure measuring device 20, and control the pressure relief component 30 according to the air pressure information. Specifically, the inner door 32 and the outer door 33 are each provided with a drive motor, and the control component 50 is electrically connected to the corresponding drive motors of the inner door 32 and the outer door 33, respectively. For example, when the air pressure information in the interlayer cavity 13 does not meet the first preset information, both the inner door 32 and the outer door 33 are in a closed state. When the control component 50 receives the air pressure information of the interlayer cavity 13 obtained by the pressure measuring device 20, and the air pressure information meets the first preset information, the control component 50 controls the corresponding drive motors of the inner door 32 and the outer door 33, so that both the inner door 32 and the outer door 33 open, so as to quickly discharge the gas in the interlayer cavity 13 to the atmosphere through the pressure relief channel 34. When the pressure is released through the pressure relief channel 34 for a period of time and the air pressure information returns to a state that does not conform to the first preset information, the control component 50 controls the corresponding drive motors of the inner door 32 and the outer door 33, so that both the inner door 32 and the outer door 33 are closed. For example, when the pressure relief channel 34 is used as a maintenance channel, the control component 50 can control the corresponding drive motors so that when the inner door 32 is open, the outer door 33 is closed, and when the outer door 33 is open, the inner door 32 is closed.

[0048] For example, the control component 50 is also electrically connected to the exhaust device 41, and the control component 50 controls the exhaust device 41 based on the air pressure information of the interlayer cavity 13. For example, when the air pressure information of the interlayer cavity 13 meets the second preset information, the control component 50 controls the exhaust device 41 to start, so as to extract the gas in the interlayer cavity 13 through the exhaust device 41.

[0049] For example, the control component 50 is also electrically connected to the air supply device 42. The control component 50 is used to control the air supply device 42. Specifically, for example, during the operation of the gas storage tank 10, the control component 50 controls the air supply device 42 to remain open to continuously fill the interlayer cavity 13 with gas. For example, if the pressure in the interlayer cavity 13 drops rapidly, or if the air pressure information in the interlayer cavity 13 obtained by the pressure measuring device 20 matches the third preset information, the control component 50 controls the activation of more air supply devices 42, or the control component 50 increases the operating frequency of the air supply devices 42 to maintain the pressure stability in the interlayer cavity 13. The third preset information can be set, for example, according to the pressure that can maintain the outer membrane 12 in shape. For example, a third preset pressure is set according to the pressure that maintains the outer membrane 12 in shape. When it is determined from the air pressure information that the actual pressure in the interlayer cavity 13 is less than or equal to the third preset pressure, gas needs to be filled into the interlayer cavity 13 to maintain the shape of the outer membrane 12. At this time, the air pressure information in the interlayer cavity 13 matches the third preset information. For example, when the number of third sensors is greater than or equal to a third preset number, the air pressure information in the interlayer cavity 13 conforms to the third preset information, and the third sensor is a pressure sensor whose reading is less than or equal to the third preset pressure. For instance, the pressure measuring device 20 includes i pressure sensors 21, the third preset number is r, and if s of the i pressure sensors 21 have readings less than or equal to the third preset pressure, then these s pressure sensors 21 are denoted as third sensors, and the number of third sensors is s. When s is greater than or equal to r, it can be determined that the actual pressure in the interlayer cavity 13 is less than or equal to a first preset pressure, and the air pressure information conforms to the third preset information.

[0050] The control component 50 enables automated control of various components within the gas storage tank's pressure regulation system, reducing manual operating costs. For example, the control component 50 can be installed within the pressure relief channel 34, and can provide rain and dust protection.

[0051] The gas pressure regulation method of the gas storage gas pressure regulation system provided in the foregoing embodiments includes step S1: when the gas pressure information in the interlayer cavity 13 obtained by the pressure measuring device 20 meets the first preset information, the inner door 32 and the outer door 33 are opened to connect the interlayer cavity 13, the pressure relief channel 34 and the atmosphere.

[0052] The pressure measuring device 20 includes, for example, multiple pressure sensors 21. In step S1, when the number of first sensors is greater than or equal to a first preset number, the gas pressure information in the interlayer cavity 13 conforms to the first preset information, wherein the first sensor is a sensor whose reading is greater than or equal to the first preset pressure. Specifically, the control component 50 controls the inner door 32 and the outer door 33 to open when the gas pressure information conforms to the first preset information. When the inner door 32 is open, the interlayer cavity 13 is connected to the pressure relief channel 34, and when the outer door 33 is open, the pressure relief channel 34 is connected to the atmosphere. Therefore, the gas in the interlayer cavity 13 can be quickly discharged to the atmosphere through the pressure relief channel 34, preventing the pressure in the interlayer cavity 13 from being too high and causing problems such as rupture and explosion of the gas storage tank 10.

[0053] Furthermore, the gas pressure regulation method for the gas storage tank also includes step S2: when the gas pressure information in the interlayer cavity 13 obtained by the pressure measuring device 20 meets the second preset information, the exhaust device is turned on to discharge the gas in the interlayer cavity 13 to the atmosphere.

[0054] In step S2, when the number of second pressure sensors is greater than or equal to the second preset number, the air pressure information in the interlayer cavity 13 conforms to the second preset information. The second pressure sensors are those whose readings are greater than or equal to the second preset pressure. The second preset number may be equal to or different from the first preset number, and the second preset pressure is less than the first preset pressure. Specifically, when the air pressure information conforms to the second preset information, the control component 50 controls the ventilation device 42 to start. When the actual pressure in the interlayer cavity 13 increases to the second preset pressure but does not reach the first preset pressure, the ventilation device 42 can extract gas from the interlayer cavity 13 to maintain pressure stability. When the actual pressure in the interlayer cavity 13 increases to or above the first preset pressure, the ventilation device 42 can act as an auxiliary device, working in conjunction with the pressure relief component 30 to discharge gas from the interlayer cavity 13, preventing excessive pressure in the interlayer cavity 13 from causing the gas storage tank 10 to rupture and explode.

[0055] The gas pressure regulation method for the gas storage facility also includes step S0: activating the air supply device 42 to fill the interlayer cavity 13 with air. For example, during the operation of the gas storage facility 10, the air supply device 42 is kept activated to continuously fill the interlayer cavity 13 with air and maintain the shape of the interlayer cavity 13.

[0056] The gas pressure regulation method for the gas storage facility also includes step S3: when the gas pressure information in the interlayer cavity 13 meets the third preset information, increase the operating frequency of the air supply device 42 or increase the number of air supply devices 42 that are activated.

[0057] The operating principle of the gas storage pressure regulation system provided in a specific embodiment of the present invention is as follows:

[0058] During operation of the gas storage chamber 10, the pressure within the interlayer cavity 13 is detected by multiple pressure sensors 21 of the pressure measuring device 20. The control component 50 controls the air supply device 42 to remain constantly open, injecting gas into the interlayer cavity 13 to maintain the shape and strength of the outer membrane 12. During energy storage, carbon dioxide from the containment chamber 14 is output to the energy storage component for compression and energy storage, reducing the volume of the containment chamber 14 and causing the inner membrane 11 to gradually collapse downwards. Multiple pressure sensors 21 detect a rapid decrease in pressure within the interlayer cavity 13. When the pressure information within the interlayer cavity 13 matches a third preset information, the control component 50 controls the air supply device 42 to increase its operating frequency or controls more air supply devices 42 to open, injecting more gas into the interlayer cavity 13 to maintain stable pressure. During energy release, carbon dioxide from the energy release component enters the containment chamber 14, gradually expanding the inner membrane 11, increasing the volume of the containment chamber 14, decreasing the volume of the interlayer cavity 13, and causing a rapid increase in pressure within the interlayer cavity 13. When the pressure information within the interlayer cavity 13 meets the second preset information, the control component 50 controls the exhaust device 41 to open, thereby relieving pressure. If the pressure within the interlayer cavity 13 further rises to the point where the pressure information meets the first preset information, the control component 50 controls both the inner door 32 and the outer door 33 to be open, rapidly and massively discharging the gas within the interlayer cavity 13 through the exhaust device 41 and the pressure relief channel 34, achieving rapid pressure relief and maintaining the pressure difference between the interlayer cavity 13 and the outside atmosphere within a safe and reliable range. When the pressure within the interlayer cavity 13 gradually decreases and the pressure information no longer meets the first preset information, the control component 50 can control the inner door 32 and the outer door 33 to close, stopping pressure relief through the pressure relief channel 34.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A gas pressure regulating system for a gas storage facility, characterized in that, include: A gas storage facility includes an inner membrane and an outer membrane, with a cavity formed between the inner and outer membranes; an exhaust port communicating with the cavity is provided on the outer membrane. A pressure measuring device, used to acquire air pressure information within the interlayer cavity; A pressure relief assembly is connected to the outer membrane; the pressure relief assembly includes a main body and an inner door and an outer door connected to opposite ends of the main body, the main body, the inner door and the outer door together enclose a pressure relief channel; the flow cross-sectional area of ​​the pressure relief channel is more than four times the flow cross-sectional area of ​​the exhaust port; The inner door is used to connect the interlayer cavity and the pressure relief channel when it is open; the outer door is used to connect the pressure relief channel and the atmosphere when it is open; the pressure relief assembly is used to open the outer door and the inner door simultaneously when the air pressure information in the interlayer cavity meets the first preset information, so as to connect the interlayer cavity, the pressure relief channel and the atmosphere. An exhaust device is connected to the exhaust port and is used to discharge the gas in the interlayer cavity to the atmosphere when the air pressure information in the interlayer cavity meets the second preset information.

2. The gas pressure regulating system for a gas storage facility as described in claim 1, characterized in that, The pressure measuring device includes a pressure sensor, which is used to detect the pressure inside the interlayer cavity.

3. The gas pressure regulating system for a gas storage facility as described in claim 2, characterized in that, The first preset information includes a first preset pressure and a first preset quantity; the number of pressure sensors is multiple; the air pressure information includes the readings of the multiple pressure sensors; A pressure sensor whose reading is greater than or equal to the first preset pressure is a first sensor. When the number of first sensors is greater than or equal to the first preset number, the air pressure information conforms to the first preset information.

4. The gas pressure regulating system for a gas storage facility as described in claim 1, characterized in that, The inner door remains closed when the air pressure information in the interlayer cavity does not conform to the first preset information, so as to isolate the interlayer cavity and the pressure relief channel; and / or the inner door and the outer door are interlocked to operate synchronously.

5. The gas storage pressure regulating system as described in claim 1, characterized in that, The pressure relief assembly further includes a flexible connecting part, which is connected between the outer membrane and the inner door; a connecting channel is formed in the flexible connecting part, which communicates with the interlayer cavity; the inner door is used to connect the connecting channel and the pressure relief channel when it is open.

6. The gas pressure regulating system for a gas storage facility as described in claim 1, characterized in that, It also includes an air supply device connected to the outer membrane, which is used to fill the interlayer cavity with gas.

7. A method for regulating gas pressure in a gas storage facility, characterized in that, The gas storage pressure regulation system based on any one of claims 1 to 6 includes: When the air pressure information in the interlayer cavity obtained by the pressure measuring device matches the first preset information, the inner door and the outer door are opened to connect the interlayer cavity, the pressure relief channel and the atmosphere; when the air pressure information in the interlayer cavity obtained by the pressure measuring device matches the second preset information, the exhaust device is opened to discharge the gas in the interlayer cavity to the atmosphere.

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