Permeation early warning structure for salt-cavern gas storage cavity

Abstract

The invention relates to the technical field of compressed gas energy storage, and discloses a permeation early warning structure for a salt-cavern gas storage cavity. The permeation early warning structure comprises a partition wall assembly, the partition wall assembly comprises a partition wall supported between the upper top wall and the lower bottom wall of the salt cavern, and the partition wall divides a cavity of the salt cavern into a gas storage cavity on one side and a pressure relief cavity on the other side; the alarm assembly is arranged on the pressure relief cavity and can be triggered by the pressure change in the pressure relief cavity so as to send an alarm signal; wherein the structural strength of the partition wall body is lower than that of the salt cavern. According to the salt cavern structure, pressure relief of the gas storage cavity can be achieved through the communicating opening, the permeation and damage effects of high-pressure gas on the inner wall of the salt cavern cavity are reduced, and the reliability of the salt cavern structure during geological activity is improved. The alarm assembly arranged on the pressure relief cavity can be triggered by the pressure change in the pressure relief cavity to send out an alarm signal, so that an operator on the ground obtains early warning about the pressure change of the salt cavern.

Description

Technical Field

[0001] This application belongs to the technical field of compressed gas energy storage, and specifically relates to a penetration warning structure for the cavity of a salt cavern gas storage reservoir. Background Art

[0002] Salt cavern gas storage is a new energy storage technology that uses salt caverns formed after underground salt layer mining to store compressed gas, and has broad application prospects and important significance.

[0003] After the cavity of the salt cavern is pressurized, the stress structure of the cavity will change, resulting in cracks easily appearing on the inner wall of the salt cavern during geological activities, and the high-pressure gas stored in the salt cavern will penetrate into the geological structure along the cracks. Due to the strong permeability of the high-pressure gas, the high-pressure gas will further expand the cracks and cause the high-pressure gas to further penetrate into the geological structure, thus forming a vicious cycle, and further seriously damaging the geological structure of the salt cavern, bringing great potential safety hazards. Summary of the Invention

[0004] The purpose of this application is to provide a penetration warning structure for the cavity of a salt cavern gas storage reservoir to improve the reliability of the salt cavern during geological activities.

[0005] To achieve the above purpose, this application provides a penetration warning structure for the cavity of a salt cavern gas storage reservoir. The penetration warning structure for the cavity of a salt cavern gas storage reservoir includes:

[0006] A partition wall assembly, including a partition wall that supports between the upper top wall and the lower bottom wall of the salt cavern. The partition wall divides the cavity of the salt cavern into a gas storage cavity on one side and a pressure relief cavity on the other side;

[0007] An alarm assembly, which is arranged on the pressure relief cavity and can be triggered by the pressure change in the pressure relief cavity to send out an alarm signal;

[0008] Among them, the structural strength of the partition wall is lower than that of the salt cavern, so that the partition wall can rupture prior to the salt cavern during geological activities to form a communication port connecting the gas storage cavity and the pressure relief cavity.

[0009] In some embodiments, the penetration warning structure for the cavity of a salt cavern gas storage reservoir further includes a first exhaust pipe. One end of the first exhaust pipe is communicated with the pressure relief cavity, and the other end extends out of the gas storage cavity. The alarm assembly includes:

[0010] A branch pipe, which is communicated with the branch path at the other end of the first exhaust pipe. A first electric sheet is connected to the branch pipe;

[0011] A piston column, which is movably arranged in the branch pipe and connected with a second electric sheet, and can switch between a first position and a second position;

[0012] An elastic member, used for driving the piston column to switch between a first position and a second position;

[0013] An alarm component, electrically connected to the first electric sheet and the second electric sheet, and used for sending an alarm signal;

[0014] Wherein, when in the first position, the first electric sheet and the second electric sheet are attached to trigger the alarm component to send out an alarm signal, and when in the second position, the first electric sheet and the second electric sheet are separated to cut off the power to the alarm component.

[0015] In some embodiments, the first electric sheet is disposed on one end of the branch pipe away from the first exhaust pipe, the second electric sheet is disposed on the side of the piston column opposite to the first electric sheet, and the elastic member is a compression spring sleeved on the circumference of the piston column, one end of the compression spring is connected to the piston column, and the other end is connected to the branch pipe.

[0016] In some embodiments, the alarm includes a buzzer and / or an LED light.

[0017] In some embodiments, one end of the first exhaust pipe is embedded in the top wall of the pressure relief cavity and communicated with the pressure relief cavity. The permeation warning structure for the salt cavern gas storage cavity further includes:

[0018] A first gas injection pipe is fixed on the top wall of the pressure relief cavity, one end of which extends to the bottom wall of the pressure relief cavity and the other end of which protrudes out of the pressure relief cavity;

[0019] A second exhaust pipe, one end of which is embedded in the top wall of the gas storage cavity and communicated with the gas storage cavity, and the other end of which extends out of the gas storage cavity;

[0020] The second gas injection pipe is fixed on the top wall of the gas storage cavity, one end of which extends to the bottom wall of the gas storage cavity and the other end of which protrudes out of the gas storage cavity.

[0021] In some embodiments, the volume ratio of the gas storage chamber to the pressure relief chamber is less than 7 / 3 and greater than 1.

[0022] In some embodiments, the partition wall assembly further includes two protective plate groups, which are respectively arranged close to both sides of the partition wall and detachably supported between the upper top wall and the lower bottom wall of the salt cavern. The protective plate group is used to cover the portion of the partition wall and is formed with a plurality of ventilation holes.

[0023] In some embodiments, the protective plate group includes a plurality of protective plates connected laterally, and the protective plates include a top plate, a side plate and a bottom plate connected in sequence, the top plate and the bottom plate are respectively used to fit with the upper top wall and the lower bottom wall of the salt cavern, and the side plate is used to fit with the partition wall and is formed with a plurality of ventilation holes.

[0024] In some embodiments, mounting holes are formed on both the top plate and the bottom plate, and fixing holes arranged in alignment with the mounting holes are formed on both the upper top wall and the lower bottom wall of the salt cavern. The partition wall assembly further includes a fixing assembly, and the fixing assembly can sequentially pass through the protective plate and the inner wall of the salt cavern via the mounting holes and the fixing holes.

[0025] In some embodiments, the fixing assembly includes:

[0026] An upper support rod, the top end of the upper support rod is used to sequentially pass through the top plate of the protective plate and the upper top wall of the salt cavern. An upper fixing ring for upwardly supporting the top plate is formed on the peripheral wall of the upper support rod, and a threaded hole with a downward opening is formed at the bottom end of the upper support rod;

[0027] A lower support rod, the bottom end of the lower support rod is used to sequentially pass through the bottom plate of the protective plate and the lower bottom wall of the salt cavern. A lower fixing ring for downwardly pressing the bottom plate is formed on the peripheral wall of the lower support rod, and a threaded portion adapted to the threaded hole is formed at the top end of the upper support rod.

[0028] By the above technical solutions, the penetration warning structure for the salt cavern gas storage cavity provided by the embodiments of the present application has the following beneficial effects:

[0029] In the technical solution of the present application, through the arrangement of the partition wall assembly, the salt cavern cavity can be divided into a gas storage cavity for storing gas and a pressure relief cavity for pressure relief. Among them, the partition wall of the partition wall assembly can support between the upper top wall and the lower bottom wall of the salt cavern, thereby strengthening the internal structural strength of the salt cavern to avoid the collapse of the salt cavern. During geological activities, since the structural strength of the partition wall is lower than that of the salt cavern, the partition wall can rupture prior to the salt cavern during geological activities to form a communication port connecting the gas storage cavity and the pressure relief cavity. The communication port can achieve the pressure relief of the gas storage cavity, reduce the pressure of the compressed gas in the gas storage cavity, and further reduce the penetration and damage of the high-pressure gas to the inner wall of the salt cavern cavity, and improve the reliability of the salt cavern structure during geological activities. In addition, the alarm assembly arranged on the pressure relief cavity can be triggered by the pressure change in the pressure relief cavity to send an alarm signal, so that the ground operator can obtain a warning about the pressure change of the salt cavern. Compared with the prior art method of limiting the upper limit pressure of the salt cavern cavity according to microseismic events to ensure the reliability of the salt cavern structure, the penetration warning structure for the salt cavern gas storage cavity of the present application enables the salt cavern cavity to store more compressed gas. The supporting effect of the partition wall can also improve the internal structural strength of the salt cavern. During geological activities, the partition wall can rupture to form a communication port, so as to quickly relieve pressure and notify the ground operator through the alarm assembly.

[0030] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific embodiment part. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings. In the accompanying drawings:

[0032] Figure 1 is a cross-sectional view of the penetration warning structure for the salt cavern gas storage cavity according to the specific embodiment of the present application;

[0033] Figure 2 is Figure 1 a schematic structural diagram of the penetration warning structure for the salt cavern gas storage cavity in

[0034] Figure 3 is Figure 2 a cross-sectional view of the penetration warning structure for the salt cavern gas storage cavity along the extension direction of the partition wall in

[0035] Figure 4 is Figure 3 a partial enlarged view at C in

[0036] Figure 5 is Figure 3 a schematic structural diagram of the alarm component in

[0037] Figure 6 is Figure 1 a schematic structural diagram of the fixing component of the penetration warning structure for the salt cavern gas storage cavity in

[0038] Figure 7 is Figure 1 a schematic structural diagram of the protective plate of the penetration warning structure for the salt cavern gas storage cavity in

[0039] Explanation of reference numerals

[0040] F Gas storage cavity S Pressure relief cavity

[0041] A Fixing hole B Mounting hole

[0042] 100 Partition wall assembly 110 Partition wall

[0043] 120 Protective plate 121 Top plate

[0044] 122 Side plate 123 Bottom plate

[0045] 130 Upper support rod 131 Upper fixing ring

[0046] 132 Threaded hole 140 Lower support rod

[0047] 141 Lower fixing ring 142 Threaded part

[0048] 210 Branch pipe 220 Piston column

[0049] 230 Elastic part 240 First electric plate

[0050] 250 Second electric plate 260 Alarm part

[0051] 261 Buzzer 262 LED lamp

[0052] 300 First exhaust pipe 400 Second exhaust pipe

[0053] 500 First injection pipe 600 Second injection pipe Specific implementation manners

[0054] The specific implementation manners of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for explaining and understanding the present application, and are not used to limit the present application.

[0055] The penetration warning structure for the cavity of the salt cavern gas storage reservoir according to the present application will be described below with reference to the accompanying drawings.

[0056] The present application discloses a novel penetration warning structure for the cavity of the salt cavern gas storage reservoir, as Figures 1 to 3 shown, the penetration warning structure for the cavity of the salt cavern gas storage reservoir in a specific implementation manner includes:

[0057] A partition wall assembly 100, including a partition wall 110 that is supported between the upper top wall and the lower bottom wall of the salt cavern, and the partition wall 110 divides the cavity of the salt cavern into a gas storage cavity F on one side and a pressure relief cavity S on the other side;

[0058] An alarm assembly, which is arranged on the pressure relief cavity S and can be triggered by the pressure change in the pressure relief cavity S to emit an alarm signal;

[0059] Among them, the structural strength of the partition wall 110 is lower than that of the salt cavern, so that the partition wall 110 can rupture prior to the salt cavern during geological activities to form a communication port connecting the gas storage cavity F and the pressure relief cavity S.

[0060] See Figure 1 and Figure 2, the installation of the partition wall assembly 100 can divide the salt cavern cavity into a gas storage cavity F and a pressure relief cavity S. The partition wall 110 of the partition wall assembly 100 can support between the upper roof and the lower bottom of the salt cavern, thereby strengthening the internal structural strength of the salt cavern to avoid the collapse of the salt cavern. During geological activities, since the structural strength of the partition wall 110 is lower than that of the salt cavern, the partition wall 110 can rupture prior to the salt cavern during geological activities to form a communication port connecting the gas storage cavity F and the pressure relief cavity S, and the communication port can realize the pressure relief of the gas storage cavity F. Among them, the partition wall 110 can be a calcium silicate board embedded with hollow glass microspheres or brittle fiber grids, and cracks along the grid when stressed to form a communication port with a controllable shape. In addition, the alarm component arranged on the pressure relief cavity S can be triggered by the pressure change in the pressure relief cavity S to emit an alarm signal, so that the operators on the ground can obtain a warning about the pressure change in the salt cavern. Compared with the prior art method of limiting the upper limit pressure of the salt cavern cavity according to microseismic events to ensure the reliability of the salt cavern structure, the salt cavern cavity of the present application can store more compressed gas, and can quickly reduce the maximum pressure of the salt cavern during geological activities through the wall fissure (i.e., the communication port), reduce the penetration and damage of the high-pressure gas to the inner wall of the salt cavern cavity, improve the reliability of the salt cavern structure during geological activities, and can also avoid the loss of compressed gas, improve the gas storage efficiency of the salt cavern, and the alarm component can also be triggered by the pressure change and notify the operators on the ground.

[0061] During geological activities, to facilitate the ground operators to understand the situation of the underground salt cavern in real time. The alarm component can be realized in various ways, such as a pressure sensor monitored by a host computer, etc., but the complexity of the implementation scheme is also greatly improved, and it brings additional costs and uncontrollability. In this embodiment, as Figure 4 and Figure 5 shown, the penetration warning structure for the salt cavern gas storage reservoir cavity further includes a first exhaust pipe 300. One end of the first exhaust pipe 300 is communicated with the pressure relief cavity S, and the other end extends out of the gas storage cavity F. The alarm component can include:

[0062] A branch pipe 210, which is communicated with the branch path at the other end of the first exhaust pipe 300, and a first electric piece 240 is connected to the branch pipe 210;

[0063] A piston column 220, which is movably arranged in the branch pipe 210 and connected with a second electric piece 250, and can be switched between a first position and a second position;

[0064] An elastic member 230, which is used to drive the piston column 220 to switch between the first position and the second position;

[0065] An alarm member 260, which is electrically connected with the first electric piece 240 and the second electric piece 250, and is used to emit an alarm signal;

[0066] Wherein, when in the first position, the first electric sheet 240 and the second electric sheet 250 are attached to trigger the alarm component 260 to emit an alarm signal, and when in the second position, the first electric sheet 240 and the second electric sheet 250 are separated to cut off the power supply of the alarm component 260.

[0067] Specifically, referring to Figure 4 , before a geological activity occurs, that is, when the pressure relief cavity S is in a low-pressure state, at this time, the piston column 220 is in the second position under the action of the elastic member 230, that is, the first electric sheet 240 and the second electric sheet 250 are far away from each other, and the alarm component 260 is in a power-off state. After the geological activity occurs, the partition wall 110 ruptures and forms a communication port, and the high-pressure gas enters the pressure relief cavity S from the gas storage cavity F through the communication port. After the pressure of the pressure relief cavity S increases, the piston column 220 is pushed by the high-pressure gas and overcomes the action of the elastic member 230, so as to switch to the second position and drive the second electric sheet 250, so that the first electric sheet 240 and the second electric sheet 250 are attached, and the alarm component 260 is triggered. In this way, after the air pressure in the pressure relief cavity S increases, the alarm component alarms, and the structure is simple and the processing is convenient.

[0068] Under the action of the elastic member 230 and the air pressure, the attachment and separation of the first electric sheet 240 and the second electric sheet 250 can be realized in various ways. In this embodiment, as Figure 4 shown, the first electric sheet 240 can be arranged at one end of the branch pipe 210 away from the first exhaust pipe 300, the second electric sheet 250 is arranged on one side of the piston column 220 opposite to the first electric sheet 240, the elastic member 230 is a compression spring sleeved on the peripheral side of the piston column 220, one end of the compression spring is connected to the piston column 220, and the other end is connected to the branch pipe 210.

[0069] Before the geological activity occurs, the piston column 220 is pressed by the compression spring to the first position, that is, the side of the branch pipe 210 close to the first exhaust pipe 300. At this time, the first electric sheet 240 and the second electric sheet 250 are far away from each other. After the pressure of the pressure relief cavity S increases, the piston column 220 is pushed by the high-pressure gas and overcomes the pressing action of the compression spring, so as to switch to the second position, and then drive the second electric sheet 250, that is, move the second electric sheet 250 to the side of the branch pipe 210 away from the first exhaust pipe 300, so that the first electric sheet 240 and the second electric sheet 250 are attached, and the alarm component 260 is triggered. In this way, it is beneficial to the smooth force of the piston column 220 to ensure the attachment and separation actions of the first electric sheet 240 and the second electric sheet 250.

[0070] After the geological activity occurs, the alarm component 260 is powered on under the action of the elastic member 230 and the air pressure to prompt the operator of the air pressure change inside the salt cavern. In this embodiment, as Figure 5As shown, the alarm component 260 may include a buzzer 261 and an LED lamp 262. In this way, by the sound of the buzzer 261 and the flashing of the LED lamp 262, the surface personnel can be reminded in time. Of course, the installation position of the alarm component is not limited to Figure 5 the first exhaust pipe 300 shown, and it can also be installed at other positions such as the operation room of the ground operator.

[0071] The compressed gas or high-pressure gas that can be stored in the salt cavern is not limited to compressed air, and can also be compressed carbon dioxide, compressed nitrogen, etc. When it is necessary to change the gas stored in the salt cavern, it is necessary to ensure that the gas injected into the salt cavern later does not mix with the previous gas. In this embodiment, one end of the first exhaust pipe 300 is embedded in the top wall of the pressure relief cavity S and is communicated with the pressure relief cavity S. The penetration warning structure for the salt cavern gas storage cavity may further include:

[0072] The first injection pipe 500 is fixed on the top wall of the pressure relief cavity S, one end extends to the bottom wall of the pressure relief cavity S, and the other end extends out of the pressure relief cavity S;

[0073] The second exhaust pipe 400, one end is embedded in the top wall of the gas storage cavity F and is communicated with the gas storage cavity F, and the other end extends out of the gas storage cavity F;

[0074] The second injection pipe 600 is fixed on the top wall of the gas storage cavity F, one end extends to the bottom wall of the gas storage cavity F, and the other end extends out of the gas storage cavity F.

[0075] In this way, the gas injected through the first injection pipe 500 and the second injection pipe 600 first enters the bottom of the salt cavern and discharges the previously stored gas from the first exhaust pipe 300 and the second exhaust pipe 400, so as to facilitate the complete replacement of the gas in the gas storage cavity F and the pressure relief cavity S inside the salt cavern.

[0076] In order to ensure that the low-pressure pressure relief cavity S can accommodate enough high-pressure gas to reduce the penetration and damage effect of the high-pressure gas on the salt cavern. In this embodiment, the volume ratio of the gas storage cavity F and the pressure relief cavity S may be less than 7 / 3 and greater than 1. If the pressure relief cavity S is too small, the pressure relief cavity S does not have enough space to accommodate high-pressure air, that is, the pressure reduction amount in the gas storage cavity F is small, and it is impossible to prevent the high-pressure gas from continuing to penetrate into the crack and causing the crack to further expand. Therefore, the volume ratio of the gas storage cavity F and the pressure relief cavity S should be less than 7 / 3. If the pressure relief cavity S is too large, the high-pressure air storage capacity of the gas storage cavity F will be greatly reduced. In addition, the stability of the smaller cavity is better. When a crack or collapse occurs in the gas storage cavity F, the pressure relief cavity S is less affected.

[0077] Since the structural strength of the partition wall 110 is relatively low, in order to avoid the overall collapse of the partition wall 110 caused by geological activities and high pressure, in this embodiment, such as Figure 1 、Figure 2 and Figure 7 As shown in Figure 7 , the partition wall assembly 100 may further include two groups of protective plates, which are respectively disposed on both sides of the partition wall 110 in close contact and detachably supported between the upper top wall and the lower bottom wall of the salt cavern. The protective plate groups are used to cover a part of the partition wall 110 and are formed with a plurality of ventilation holes. In this way, after the protective plate groups are arranged, the stability of the partition wall 110 can be greatly improved. After geological activities, the partition wall 110 can be simply repaired and then reused. In order to ensure the pressure relief function of the communication port of the partition wall 110, the part of the protective plate group used to cover the partition wall 110 may be formed with a plurality of ventilation holes, so that the high-pressure gas in the gas storage cavity F can enter the pressure relief cavity S through the ventilation holes and the communication port.

[0078] Since the span of the partition wall 110 is relatively large and its shape is determined by the structure of the salt cavern cavity, covering the entire partition wall 110 with a single protective plate 120 is not only difficult to process but also costly. In this embodiment, the protective plate group may include a plurality of protective plates 120 connected in a transverse succession. The protective plate 120 includes a top plate 121, a side plate 122, and a bottom plate 123 connected in sequence. The top plate 121 and the bottom plate 123 are respectively used to fit with the upper top wall and the lower bottom wall of the salt cavern, and the side plate 122 is used to fit with the partition wall 110 and is formed with a plurality of ventilation holes. In this way, the overall cost of the protective plate group can be reduced by covering the partition wall 110 with a plurality of protective plates 120 together, and the adaptability of the protective plate 120 to partition walls 110 of different specifications can be improved. In addition, the top plate 121 and the bottom plate 123 can also support the salt cavern together with the partition wall 110, reduce the load of the partition wall 110, and improve the internal structural strength of the salt cavern.

[0079] In this embodiment, mounting holes B are formed on both the top plate 121 and the bottom plate 123, and fixing holes A arranged in alignment with the mounting holes B are formed on both the upper top wall and the lower bottom wall of the salt cavern. The partition wall assembly 100 may further include a fixing assembly, and the fixing assembly can sequentially penetrate through the protective plate 120 and the inner wall of the salt cavern via the mounting holes B and the fixing holes A. In this way, the fixing of the protective plate 120 relative to the partition wall 110 can be conveniently realized to prevent the protective plate 120 from separating from the partition wall 110 during geological activities, resulting in the overall collapse of the partition wall 110.

[0080] The fixing assembly not only needs to ensure the fixing effect of the protective plate 120 relative to the partition wall 110, but also needs to ensure the supporting effect of the protective plate 120 on the salt cavern through the top plate 121 and the top plate 121, and reduce the load of the partition wall 110. In this embodiment, as Figure 2 and Figure 6 shown, the fixing assembly may include:

[0081] The upper support rod 130, the top end of the upper support rod 130 is used to sequentially penetrate and connect the top plate 121 of the protection plate 120 and the upper top wall of the salt cavern. An upper fixing ring 131 for upwardly supporting the top plate 121 is formed on the peripheral wall of the upper support rod 130, and a threaded hole 132 with a downward opening is formed at the bottom end of the upper support rod 130;

[0082] The lower support rod 140, the bottom end of the lower support rod 140 is used to sequentially penetrate and connect the bottom plate 123 of the protection plate 120 and the lower bottom wall of the salt cavern. A lower fixing ring 141 for downwardly pressing the bottom plate 123 is formed on the peripheral wall of the lower support rod 140, and a threaded portion 142 adapted to the threaded hole 132 is formed at the top end of the upper support rod 130.

[0083] After the upper support rod 130 and the lower support rod 140 are screwed together as a whole through the threaded hole 132 and the threaded portion 142, they can jointly support the salt cavern, and are respectively in contact with the top plate 121 and the bottom plate 123 through the upper fixing ring 131 and the lower fixing ring 141, strengthening the supporting effect of the protection plate 120, thereby reducing the loads on the partition wall 110 and the side plate 122. In addition, after the upper support rod 130 and the lower support rod 140 are screwed together as a whole, the fixing of the protection plate 120 relative to the partition wall 110 can be provided by the supporting effect of the upper support rod 130 and the lower support rod 140 on the salt cavern to ensure that the protection plate 120 will not be separated from the partition wall 110 during geological activities, thereby ensuring the overall structural stability of the partition wall 110. Thus, the structure of the fixing component is simple and easy to disassemble, assemble and adjust. Among them, the threaded hole 132 and the threaded portion 142 can be interchangeably arranged, or threaded portions are formed on the opposite ends of the upper support rod 130 and the lower support rod 140, and the two are screwed together through an additional threaded sleeve and the relative distance between the two is adjusted.

[0084] In the description of the present application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0085] In the present application, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0086] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

Claims

1. A permeation warning structure for a salt cavern gas storage cavity, characterized in that: The permeation warning structure for the salt cavern gas storage cavity comprises: A partition wall assembly (100) comprises a partition wall (110) supported between an upper top wall and a lower bottom wall of a salt cavern, wherein the partition wall (110) divides the cavity of the salt cavern into a gas storage cavity (F) on one side and a pressure relief cavity (S) on the other side; an alarm component, the alarm component being arranged on the pressure relief chamber (S) and capable of being triggered by a pressure change in the pressure relief chamber (S) to send out an alarm signal; The structural strength of the partition wall (110) is lower than that of the salt cavern, so that the partition wall (110) can be broken before the salt cavern during geological activities to form a connecting port connecting the gas storage cavity (F) and the pressure relief cavity (S).

2. The seepage warning structure for the salt cavern gas storage cavity according to claim 1 is characterized in that: The permeation warning structure for the salt cavern gas storage cavity further comprises a first exhaust pipe (300), one end of the first exhaust pipe (300) is in communication with the pressure relief cavity (S), and the other end thereof extends out of the gas storage cavity (F), and the alarm component comprises: A branch pipe (210) is communicated with the branch path of the other end of the first exhaust pipe (300), and a first electric sheet (240) is connected to the branch pipe (210); A piston column (220) is movably disposed in the branch pipe (210) and is connected to a second electric sheet (250), and is capable of switching between a first position and a second position; An elastic member (230) for driving the piston column (220) to switch between the first position and the second position; An alarm component (260) is electrically connected to the first electrical chip (240) and the second electrical chip (250) and is used to send out an alarm signal; Wherein, when in the first position, the first electrical sheet (240) and the second electrical sheet (250) are in contact with each other to trigger the alarm component (260) to send out the alarm signal, and when in the second position, the first electrical sheet (240) and the second electrical sheet (250) are separated to cut off the power supply to the alarm component (260).

3. The seepage warning structure for the salt cavern gas storage cavity according to claim 2 is characterized in that: The first electric sheet (240) is arranged on one end of the branch pipe (210) away from the first exhaust pipe (300), the second electric sheet (250) is arranged on the side of the piston column (220) opposite to the first electric sheet (240), and the elastic member (230) is a compression spring sleeved on the circumference of the piston column (220), one end of the compression spring is connected to the piston column (220), and the other end is connected to the branch pipe (210).

4. The seepage warning structure for the salt cavern gas storage cavity according to claim 2 is characterized in that: The alarm component (260) includes a buzzer (261) and / or an LED lamp (262).

5. The seepage warning structure for the salt cavern gas storage cavity according to claim 2 is characterized in that: One end of the first exhaust pipe (300) is embedded in the top wall of the pressure relief cavity (S) and communicates with the pressure relief cavity (S). The permeation warning structure for the salt cavern gas storage cavity also includes: A first gas injection pipe (500) is fixed on the top wall of the pressure relief cavity (S), one end of which extends to the bottom wall of the pressure relief cavity (S) and the other end of which protrudes out of the pressure relief cavity (S); A second exhaust pipe (400), one end of which is embedded in the top wall of the gas storage cavity (F) and communicated with the gas storage cavity (F), and the other end of which extends out of the gas storage cavity (F); The second gas injection pipe (600) is fixed on the top wall of the gas storage cavity (F), one end of which extends to the bottom wall of the gas storage cavity (F) and the other end of which protrudes out of the gas storage cavity (F).

6. The seepage warning structure for the salt cavern gas storage cavity according to claim 1 is characterized in that: The volume ratio of the gas storage chamber (F) and the pressure relief chamber (S) is less than 7 / 3 and greater than 1.

7. The seepage warning structure for a salt cavern gas storage cavity according to any one of claims 1 to 6, characterized in that: The partition wall assembly (100) further comprises two protective plate groups, which are respectively arranged closely to the two sides of the partition wall (110) and are detachably supported between the upper top wall and the lower bottom wall of the salt cavern; a portion of the protective plate group used for covering the partition wall (110) is formed with a plurality of ventilation holes.

8. The seepage warning structure for the salt cavern gas storage cavity according to claim 7 is characterized in that: The protective plate group comprises a plurality of protective plates (120) connected in a transverse manner, wherein the protective plates (120) comprise a top plate (121), a side plate (122) and a bottom plate (123) connected in sequence, wherein the top plate (121) and the bottom plate (123) are respectively used to fit with the upper top wall and the lower bottom wall of the salt cavern, and the side plate (122) is used to fit with the partition wall (110) and is formed with a plurality of ventilation holes.

9. The seepage warning structure for the salt cavern gas storage cavity according to claim 8 is characterized in that: The top plate (121) and the bottom plate (123) are both formed with mounting holes (B), the upper top wall and the lower bottom wall of the salt cavern are both formed with fixing holes (A) arranged in alignment with the mounting holes (B), and the partition wall assembly (100) further comprises a fixing assembly, which can sequentially connect the protective plate (120) and the inner wall of the salt cavern via the mounting holes (B) and the fixing holes (A).

10. The seepage warning structure for the salt cavern gas storage cavity according to claim 9, characterized in that: The fixing assembly comprises: an upper support rod (130), the top end of the upper support rod (130) being used to sequentially penetrate the top plate (121) of the protective plate (120) and the upper top wall of the salt cavern, an upper fixing ring (131) being used to support the top plate (121) upward is formed on the peripheral wall of the upper support rod (130), and a threaded hole (132) opening downward is formed at the bottom end of the upper support rod (130); A lower support rod (140), the bottom end of which is used to sequentially penetrate the bottom plate (123) of the protective plate (120) and the lower bottom wall of the salt cavern, a lower fixing ring (141) is formed on the peripheral wall of the lower support rod (140) for pressing the bottom plate (123) downward, and a threaded portion (142) adapted to the threaded hole (132) is formed on the top end of the upper support rod (130).

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