Compressed air energy storage device

Abstract

The utility model relates to the technical field of compressed air energy storage, in particular to a compressed air energy storage device which comprises an outer air bag arranged in a cave and an inner air bag located in the outer air bag. The mounting pipe is arranged in a channel for communicating the cave with the ground and is used for injecting slurry into the cave; the mounting pipe is communicated with the inner airbag; a piston block is slidably arranged in the mounting pipe; a first opening is formed in the mounting pipe and is positioned between the outer wall of the outer air bag and the inner wall of the cave; a second opening is formed in the mounting pipe and is positioned between the inner wall of the outer air bag and the outer wall of the inner air bag; the inflation pipe is slidably sleeved with the mounting pipe and penetrates through the piston block in the length direction of the mounting pipe; the vent pipe is sleeved with the inflation pipe, and the end, close to the cave, of the vent pipe is provided with an opening in the side wall of the piston block. According to the device, high-cost cave excavation is not needed, meanwhile, professional equipment is not needed for operation in the cave, and the problem that natural caves are difficult to excavate is solved.

Description

Technical Field

[0001] The present application relates to the technical field of compressed air energy storage, and in particular to a compressed air energy storage device. Background Art

[0002] Compressed air energy storage is an energy storage and release system that uses compressed air to store energy and release it when needed. This technology is often used to balance supply and demand differences in power systems, providing energy storage solutions to release power when demand is high.

[0003] When constructing a compressed air energy storage device, it is usually necessary to reinforce the underground caves. When the existing technology neutrons are used for construction in underground caves such as coal mines, since the mines have large artificially excavated passages, it is convenient for construction equipment to enter the caves to pour concrete and seal and reinforce the cave arms. However, when constructing natural caves, especially deep caves, it is costly and unrealistic to dig deeper and wider cave passages. Utility Model Content

[0004] In order to solve the above technical problems or partially solve the above technical problems, the present application provides a compressed air energy storage device.

[0005] The present application provides a compressed air energy storage device, comprising:

[0006] An external air bag, used to be arranged inside the cave, with an external supporting protrusion being arranged between the external air bag and the inner wall of the cave;

[0007] An inner airbag is located inside the outer airbag, and an inner supporting protrusion is provided between the inner airbag and the outer airbag;

[0008] A mounting tube is arranged in the passage connecting the cave and the ground, and is used for grouting into the cave; the mounting tube is connected to the inner airbag; a piston block is slidably arranged in the mounting tube; a first opening is arranged on the mounting tube, and the first opening is located between the outer wall of the outer airbag and the inner wall of the cave; a second opening is arranged on the mounting tube, and the second opening is located between the inner wall of the outer airbag and the outer wall of the inner airbag;

[0009] An air filling tube, which is slidably sleeved in the mounting tube and penetrates the piston block along the length direction of the mounting tube;

[0010] The air-permeable tube is sleeved in the air-filled tube, and one end of the air-permeable tube close to the cave opens at the side wall of the piston block.

[0011] Optionally, a blocking plate is further included, wherein the blocking plate is arranged in the channel and the blocking plate is provided with a mounting hole for the mounting pipe to pass through.

[0012] Optionally, the sealing plate is provided with air holes.

[0013] Optionally, the outer supporting protrusion is arranged on the outer peripheral wall of the outer airbag, and the inner supporting protrusion is arranged on the outer peripheral wall of the inner airbag.

[0014] Optionally, one end of the inflation tube away from the cave is connected to an inflation device.

[0015] Optionally, one end of the mounting tube away from the cave is connected to a grouting device.

[0016] Optionally, a telescopic mechanism is further included, wherein the telescopic end of the telescopic mechanism is connected to a section of the inflation tube away from the cave to drive the piston block to slide along the length direction of the mounting tube.

[0017] Optionally, the air vent includes a first branch pipe and a second branch pipe disposed in the piston block; the first branch pipe has an end facing away from the piston block and opens to a side wall of the piston block, and the second branch pipe has an end facing away from the piston block and opens to a side wall of the piston block.

[0018] Optionally, there are two first openings and two second openings.

[0019] Optionally, two of the second openings are arranged opposite to each other along the radial direction of the mounting tube;

[0020] The first branch pipe and the second branch pipe are arranged opposite to each other in a radial direction of the mounting pipe.

[0021] Compared with the prior art, the technical solution provided by the embodiments of the present application has the following advantages:

[0022] The compressed air energy storage device provided in the present application can realize automatic cave processing through the above-mentioned device when facing naturally formed and difficult-to-excavate caves, and finally meet the energy storage requirements. The device does not require high-cost cave excavation, and does not require professional equipment to operate in the cave, which solves the problem that it is difficult to excavate and process natural caves. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 This is a schematic diagram of the overall structure of the compressed air energy storage device before grouting according to an embodiment of the present application;

[0026] Figure 2 It is a partially enlarged schematic diagram of the location of the sealing plate of the compressed air energy storage device described in the embodiment of the present application;

[0027] Figure 3 This is a schematic diagram of the overall structure of the compressed air energy storage device after grouting described in an embodiment of the present application.

[0028] in,

[0029] 1. Outer air bag; 10. Outer support protrusion; 2. Inner air bag; 20. Inner support protrusion; 3. Cave; 4. Passage; 5. Mounting pipe; 50. Inflatable pipe; 51. Ventilation pipe; 510. First branch pipe; 511. Second branch pipe; 52. Sealing plate; 520. Ventilation hole; 53. First opening; 54. Second opening; 55. Piston block; 6. Air pump; 7. Grouting pump; 8. Telescopic cylinder; 9. Concrete. DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present application, rather than all of the embodiments.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0033] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0034] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0036] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0037] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0038] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0039] Reference Figures 1 to 3 As shown, a compressed air energy storage device provided in this embodiment includes: an outer airbag 1, which is used to be arranged inside the cave 3, and an outer supporting protrusion 10 is provided between the outer airbag 1 and the inner wall of the cave 3; an inner airbag 2, which is located inside the outer airbag 1, and an inner supporting protrusion 20 is provided between the inner airbag 2 and the outer airbag 1.

[0040] The inner airbag 2 is sleeved inside the outer airbag 1, and the interior of the inner airbag 2 is used for inflation. When inflated, the inner airbag 2 will expand, and at the same time drive the outer airbag 1 to expand, so that the gas between the outer wall of the outer airbag 1 or the outer support protrusion 10 and the inner wall of the cave 3 is discharged.

[0041] It should be noted that the inner airbag 2 and the outer airbag 1 are both in an uninflated state when placed inside the cave 3 , so as to facilitate entry into the cave 3 .

[0042] In some embodiments, the inner airbag 2 and the outer airbag 1 may be supported by plastic or composite materials to ensure their own strength.

[0043] In addition, the outer support protrusion 10 and the inner support protrusion 20 can be respectively arranged on the outer airbag 1 and the inner airbag 2 to increase the strength of the sealing structure formed by the outer airbag 1 and the inner airbag 2.

[0044] The mounting tube 5 is arranged in the passage 4 connecting the cave 3 and the ground, and is used for grouting into the cave 3; the mounting tube 5 is connected to the inner air bag 2; a piston block 55 is slidably provided in the mounting tube 5; a first opening 53 is provided on the mounting tube 5, and the first opening 53 is located between the outer wall of the outer air bag 1 and the inner wall of the cave 3; a second opening 54 is provided on the mounting tube 5, and the second opening 54 is located between the inner wall of the outer air bag 1 and the outer wall of the inner air bag 2; an inflation tube 50 is slidably sleeved in the mounting tube 5, and penetrates the piston block 55 along the length direction of the mounting tube 5; a vent tube 51 is sleeved in the inflation tube 50, and the end of the vent tube 51 close to the cave 3 opens at the side wall of the piston block 55.

[0045] In actual situations, when a natural cave 3 is detected, a drilling machine is used to drill a hole into the natural cave 3 from the ground, thereby forming the above-mentioned passage 4, through which both the outer airbag 1 and the inner airbag 2 enter the interior of the cave 3.

[0046] The mounting tube 5 is located in the entire passage 4 , with the upper end, ie, the end away from the cave 3 , extending out of the ground, and the lower end communicating with the interior of the inner airbag 2 ; the entire mounting tube 5 is fixed inside the passage 4 .

[0047] The piston block 55 is slidably disposed inside the mounting tube 5 , and can move in the up and down directions driven by the inflation tube 50 .

[0048] A first opening 53 and a second opening 54 are provided on the mounting tube 5. The first opening 53 and the second opening 54 are different in position, i.e., the first opening 53 is located above the second opening 54, and the first opening 53 is specifically located between the outer wall of the outer airbag 1 and the inner wall of the cave 3, and the second opening 54 is specifically located between the inner wall of the outer airbag 1 and the outer wall of the inner airbag 2. When the piston block 55 is in different positions during the up and down movement, it can respectively block the first opening 53 and the second opening 54.

[0049] The air vent tube 51 is sleeved inside the inflation tube 50, and the lower end is also located in the piston block 55. The lower end of the air vent tube 51 opens at the side wall of the piston block 55. When the inner airbag 2 is inflated, the piston block 55 can be slid so that the lower end of the air vent tube 51 is opposite to the second opening 54 to discharge the gas between the outer airbag 1 and the inner airbag 2.

[0050] After the gas is discharged, the inner airbag 2 and the outer airbag 1 are in an expanded state as a whole. Grouting can be performed between the outer airbag 1 and the cave 3 through the grouting pipe. After the grouting is completed, the piston block 55 is moved down, and grouting is performed between the outer airbag 1 and the inner airbag 2, so as to finally reinforce the cave 3 to meet the energy storage requirements.

[0051] When faced with a cave 3 that is naturally formed and difficult to excavate, the above-mentioned device can be used to automatically process the cave 3 and ultimately meet the energy storage requirements. The device does not require high-cost excavation of the cave 3, and does not require professional equipment to operate in the cave 3, thus solving the problem of the difficulty in excavating and processing natural caves 3.

[0052] In some further embodiments, a blocking plate 52 is further included. The blocking plate 52 is disposed in the channel 4 and has a mounting hole for the mounting tube 5 to pass through.

[0053] The outer peripheral wall of the blocking plate 52 is fixed on the inner peripheral wall of the channel 4 , and the mounting tube 5 passes through the mounting hole set on the blocking plate 52 ; the blocking plate 52 is mainly used to block the concrete 9 between the outer airbag 1 and the inner wall of the cave 3 .

[0054] In some further embodiments, the sealing plate 52 is provided with air holes 520 .

[0055] The air vent 520 is mainly used to balance the internal and external pressures during the process of inflating the inner airbag 2 and grouting between the outer airbag 1 and the cave 3, so as to ensure the smooth completion of inflation and grouting.

[0056] In some further embodiments, the outer support protrusion 10 is disposed on the outer peripheral wall of the outer airbag 1 , and the inner support protrusion 20 is disposed on the outer peripheral wall of the inner airbag 2 .

[0057] Exemplarily, the outer support protrusion 10 can be set on the outer peripheral wall of the outer airbag 1, and the inner support protrusion 20 can be set on the outer peripheral wall of the inner airbag 2. Since grouting is required between the inner airbag 2 and the outer airbag 1, and between the outer airbag 1 and the inner wall of the cave 3, the inner support protrusion 20 and the outer support protrusion 10 can act as a supporting structure to ensure that the concrete 9 layer solidified after grouting is more solid.

[0058] In some further embodiments, one end of the inflation tube 50 away from the cave 3 is connected to an inflation device.

[0059] The inflation device may be an inflation pump 6 for inflating air into the inflation tube 50 .

[0060] In some further embodiments, one end of the installation pipe 5 away from the cave 3 is connected to a grouting device.

[0061] The grouting device may be a grouting pump 7, which is used to transport concrete 9 into the installation pipe 5 to complete the grouting process.

[0062] In some further embodiments, a telescopic mechanism is further included, wherein a telescopic end of the telescopic mechanism is connected to a section of the inflation tube 50 away from the cave 3 to drive the piston block 55 to slide along the length direction of the mounting tube 5 .

[0063] In an embodiment, the telescopic mechanism can be a telescopic cylinder 8, which is specifically arranged on the outer peripheral wall of the mounting tube 5, and the telescopic end of the telescopic cylinder 8 is connected to the inflation tube 50. The telescopic cylinder 8 can be controlled to move through an automated program, thereby further driving the inflation tube 50 and the piston block 55 to move up and down along the inner wall of the mounting tube 5 to complete the grouting operation in different areas.

[0064] In some further embodiments, the air vent 51 includes a first branch 510 and a second branch 511 disposed in the piston block 55; the end of the first branch 510 facing away from the piston block 55 opens at the side wall of the piston block 55, and the end of the second branch 511 facing away from the piston block 55 opens at the side wall of the piston block 55.

[0065] The lower end of the air vent tube 51 includes a first branch tube 510 and a second branch tube 511. The air vent tube 51 also includes a main tube. The lower end of the main tube is connected to one end of the first branch tube 510 and the second branch tube 511. The ends of the first branch tube 510 and the second branch tube 511 away from the main tube are respectively opened on the side wall of the piston block 55 to discharge the gas between the inner airbag 2 and the outer airbag 1.

[0066] In some further embodiments, two first openings 53 and two second openings 54 are provided.

[0067] In some further embodiments, the two second openings 54 are disposed opposite to each other in the radial direction of the mounting tube 5 ; the first branch pipe 510 and the second branch pipe 511 are disposed opposite to each other in the radial direction of the mounting tube 5 .

[0068] There are two second openings 54 , which are radially opposite to each other along the mounting tube 5 . Correspondingly, the first branch pipe 510 and the second branch pipe 511 are also radially opposite to each other along the mounting tube 5 .

[0069] In order to make the working principle of the device easier to understand, the following will be explained by way of example through the construction process.

[0070] First, detect the location of the cave: after determining the location of cave 3, use a drilling machine to drill a hole at the location of cave 3, and then lower the sealing plate 52 of the device together with the mounting tube 5 into the channel 4; it should be noted that the outer airbag 1 and the inner airbag 2 are initially in a non-inflated state, and then the outer airbag 1, the inner airbag 2 and the mounting tube 5 can be inserted into the channel 4 together until the outer airbag 1 completely enters the cave.

[0071] Then, the telescopic cylinder 8 is actuated to drive the inflation tube 50 to move, and the inflation tube 50 drives the piston block 55 to move to the bottom of the first opening 53 and seal the second opening 54; the inflation tube 50 is inflated by the air pump 6, and the gas enters the inner airbag 2, causing the inner airbag 2 to expand. The expansion of the inner airbag 2 causes the inner airbag 2 to squeeze the outer airbag 1 to expand, so that the outer support protrusion 10 on the outer airbag 1 contacts the inner wall of the cave 3, and at the same time, the inner airbag 2 is squeezed, and the gas between the inner airbag 2 and the outer airbag 1 is discharged through the air permeable tube 51, thereby causing the space between the inner airbag 2 and the outer airbag 1 to disappear.

[0072] Then, grouting is performed in the installation tube 5 through the grouting pump 7, and then the grouting is discharged through the first opening 53 to the cavity between the outer airbag 1 and the cave 3 for pouring, and the gas is discharged through the air vent 520; after the pouring is completed, the inflation tube 50 drives the piston block 55 to descend under the drive of the telescopic cylinder 8, and the piston block 55 descends so that the first branch pipe 510 and the second branch pipe 511 in the air vent pipe 51 are blocked and sealed by the installation tube 5, and the upper end of the piston block 55 moves to the bottom of the second opening 54; then, the grouting is performed through the grouting pump 7, and then the concrete 9 fills the space between the inner airbag 2 and the outer airbag 1. Since the cavity between the inner airbag 2 and the outer airbag 1 has been squeezed and emptied before, the concrete 9 can be better grouted when grouting, and there is no need to specially discharge the air between the inner airbag 2 and the outer airbag 1.

[0073] After completing the work, remove the air pump 6, grouting pump 7, and telescopic cylinder 8, and close the pipeline connecting the air pump 6 and the inflation tube 50 to maintain the air pressure in the inner air bag 2, and then use the inner air bag 2 to support the concrete 9 outside the inner air bag 2 to prevent it from collapsing; after waiting for the concrete 9 to solidify and reach the predetermined strength, connect the air energy storage device to the inflation tube 50 for inflation and deflation operations.

[0074] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features applied for herein.

Claims

1. A compressed air energy storage device, characterized in that: include: An outer air bag (1) is used to be arranged inside the cave (3), and an outer supporting protrusion (10) is provided between the outer air bag (1) and the inner wall of the cave (3); An inner airbag (2) is located inside the outer airbag (1), and an inner supporting protrusion (20) is provided between the inner airbag (2) and the outer airbag (1); A mounting tube (5) is arranged in a passage (4) connecting the cave (3) and the ground, and is used for injecting grout into the cave (3); the mounting tube (5) is connected to the inner airbag (2); a piston block (55) is slidably arranged in the mounting tube (5); a first opening (53) is arranged on the mounting tube (5), and the first opening (53) is located between the outer wall of the outer airbag (1) and the inner wall of the cave (3); a second opening (54) is arranged on the mounting tube (5), and the second opening (54) is located between the inner wall of the outer airbag (1) and the outer wall of the inner airbag (2); An inflation tube (50) is slidably sleeved in the mounting tube (5) and penetrates the piston block (55) along the length direction of the mounting tube (5); The air vent tube (51) is sleeved in the inflation tube (50), and one end of the air vent tube (51) close to the cave (3) opens at the side wall of the piston block (55).

2. The compressed air energy storage device according to claim 1, characterized in that: It also comprises a blocking plate (52), the blocking plate (52) being arranged in the channel (4), and the blocking plate (52) being provided with a mounting hole for the mounting pipe (5) to pass through.

3. The compressed air energy storage device according to claim 2, characterized in that: The blocking plate (52) is provided with a vent hole (520).

4. The compressed air energy storage device according to claim 1, characterized in that: The outer support protrusion (10) is arranged on the outer peripheral wall of the outer airbag (1), and the inner support protrusion (20) is arranged on the outer peripheral wall of the inner airbag (2).

5. The compressed air energy storage device according to claim 1, characterized in that: One end of the inflation tube (50) away from the cave (3) is connected to an inflation device.

6. The compressed air energy storage device according to claim 1, characterized in that: One end of the installation pipe (5) away from the cave (3) is connected to a grouting device.

7. The compressed air energy storage device according to claim 1, characterized in that: It also comprises a telescopic mechanism, the telescopic end of which is connected to a section of the inflation tube (50) away from the cave (3) to drive the piston block (55) to slide along the length direction of the mounting tube (5).

8. The compressed air energy storage device according to claim 1, characterized in that: The air vent pipe (51) comprises a first branch pipe (510) and a second branch pipe (511) which are arranged in the piston block (55); the end of the first branch pipe (510) facing away from the piston block (55) opens at the side wall of the piston block (55), and the end of the second branch pipe (511) facing away from the piston block (55) opens at the side wall of the piston block (55).

9. The compressed air energy storage device according to claim 8, characterized in that: There are two of each of the first opening (53) and the second opening (54).

10. The compressed air energy storage device according to claim 9, characterized in that: The two second openings (54) are arranged opposite to each other along the radial direction of the mounting tube (5); The first branch pipe (510) and the second branch pipe (511) are arranged opposite to each other in a radial direction of the mounting pipe (5).

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