High-pressure gas storage underground cavern plugging structure and arrangement structure

Abstract

The invention relates to the field of compressed air energy storage and underground space structures, in particular to a high-pressure air storage underground cavern plugging structure and an arrangement structure.The outer side of the middle of a plugging body is connected with an anti-sliding protruding part, and the anti-sliding protruding part can reduce the possibility of sliding between the plugging structure and surrounding rock; the anti-sliding plugging capacity of the plugging structure is improved, the length of the plugging structure can be effectively reduced, the construction cost is reduced, and the construction period is shortened; moreover, a controller, a first pressure detection sensor and an electromagnetic air pressure valve are further arranged, during maintenance, a maintainer controls the electromagnetic air pressure valve and the inner side sealing door to be opened and closed through the controller, and pressure reduction and exhaust are conducted through a pressure reduction section till the gas pressure in the high-pressure gas storage chamber and the gas pressure in the maintenance channel are balanced; the pressure difference between the maintenance channel and the high-pressure gas storage cavern is effectively controlled, the possibility of damage to maintenance personnel and equipment is reduced, and the maintenance safety is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the field of compressed air energy storage and underground space structures, and in particular to a high-pressure gas storage underground cavern sealing structure and arrangement structure. Background Art

[0002] After the excavation of the high-pressure gas storage cavern is completed, the construction channel needs to be blocked, and the inspection channel needs to be retained to facilitate the later inspection and maintenance of the cavern. The gas pressure inside the compressed air energy storage underground cavern is high, and the general operating pressure can reach 10MPa, which is far higher than the internal pressure of conventional hydraulic tunnels. The conventional plugging structure has a cylindrical plugging body, which completely relies on the friction between the plugging body and the surrounding rock to resist the thrust of the internal high-pressure gas on the plugging structure. According to the conventional anti-slip capacity, the plugging length can reach hundreds of meters. The project cost is high and the construction period is long. In addition, the high pressure difference between the high-pressure gas storage cavern and the inspection channel is not considered at present. The high pressure can easily cause harm to maintenance personnel and equipment, and the maintenance safety is low. Summary of the invention

[0003] The technical problem solved by the invention is to provide a high-pressure gas storage underground cavern plugging structure with low engineering cost, short construction period and high maintenance safety.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a high-pressure gas storage underground cavern plugging structure, comprising a plugging body, a maintenance passage arranged along its length is provided in the plugging body, an inner sealing door is provided on the inner side of the maintenance passage, and an anti-slip protrusion is provided on the outer side of the middle part of the plugging body;

[0005] It also includes a controller, a first pressure detection sensor and an electromagnetic air pressure valve, the electromagnetic air pressure valve is arranged in the middle of the inspection channel, the inspection channel between the electromagnetic air pressure valve and the inner sealing door is a decompression section, and the first pressure detection sensor is arranged in the decompression section;

[0006] The inner sealing door is an electronic door, and the inner sealing door, the electromagnetic air pressure valve and the first pressure detection sensor are all electrically connected to the controller.

[0007] Furthermore, the blocking body is cylindrical.

[0008] Furthermore, the anti-slip protrusion includes a first anti-slip section and a second anti-slip section. The first anti-slip section and the second anti-slip section are truncated cone-shaped. From the inner side to the outer side of the blocking body, the cross-sectional circular diameter of the first anti-slip section gradually increases, and the cross-sectional circular diameter of the second anti-slip section gradually decreases.

[0009] Furthermore, the blocking body and the anti-slip protrusion are an integrated structure.

[0010] Furthermore, the shape of the inspection passage is rectangular, and an outer sealing door is provided on the outer side of the inspection passage.

[0011] Furthermore, the inspection passage between the outer sealing door and the switch valve is provided with an enlarged section, and the cross-sectional area of ​​the enlarged section is larger than the cross-sectional area of ​​other parts of the inspection passage.

[0012] The technical problem solved by the present invention is to provide a high-pressure gas storage underground cavern arrangement structure with low engineering cost, short construction period and high maintenance safety.

[0013] The high-pressure gas storage underground cavern arrangement structure includes a high-pressure gas storage cavern and a construction channel, and also includes the above-mentioned high-pressure gas storage underground cavern blocking structure and a second pressure detection sensor, the high-pressure gas storage cavern is connected to the inner side of the blocking body, and the construction channel is connected to the outer side of the blocking body;

[0014] The second pressure detection sensor is arranged in the high-pressure gas storage chamber 1, and the second pressure detection sensor is electrically connected to the controller.

[0015] Preferably, the high-pressure gas storage chamber is an annular structure.

[0016] Preferably, anchor structures are provided on the outer sides of the high-pressure gas storage cavern, the construction channel and the blocking structure.

[0017] The beneficial effects of the present invention are as follows: the plugging structure and arrangement structure of the underground cavern of high-pressure gas storage of the present invention is provided with an anti-slip protrusion through the outer connection of the middle part of the plugging body, the anti-slip protrusion can reduce the possibility of sliding between the plugging structure and the surrounding rock, improve the anti-slip plugging ability of the plugging structure, can effectively reduce the length of the plugging structure, reduce the engineering cost, and shorten the construction period; and a controller, a first pressure detection sensor and an electromagnetic air pressure valve are also provided, the electromagnetic air pressure valve is arranged in the middle of the maintenance channel, the maintenance channel between the electromagnetic air pressure valve and the inner sealing door is a decompression section, and the first pressure detection sensor is arranged in the decompression section. During maintenance, the maintenance personnel control the opening and closing of the electromagnetic air pressure valve and the inner sealing door through the controller, and use the decompression section to decompress and exhaust until the gas pressure in the high-pressure gas storage cavern is balanced with the gas pressure in the maintenance channel, effectively control the pressure difference between the maintenance channel and the high-pressure gas storage cavern, reduce the possibility of causing harm to the maintenance personnel and equipment, and significantly improve the safety of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 yes Figure 1 Middle AA section view;

[0020] Marked as: high-pressure gas storage chamber 1, sealing body 2, construction channel 3, maintenance channel 4, pressure reduction section 41, expansion section 42, inner sealing door 5, anti-slip protrusion 6, first anti-slip section 61, second anti-slip section 62, outer sealing door 7, first pressure detection sensor 8, switch valve 9, second pressure detection sensor 10. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] like Figure 1 , Figure 2 As shown, the high-pressure gas storage underground cavern sealing structure of the present invention comprises a sealing body 2, in which a maintenance passage 4 arranged along its length is provided, an inner sealing door 5 is provided inside the maintenance passage 4, and an anti-slip protrusion 6 is connected to the outer side of the middle part of the sealing body 2;

[0023] It also includes a controller, a first pressure detection sensor 8 and an electromagnetic air pressure valve 9, the electromagnetic air pressure valve 9 is arranged in the middle of the inspection channel 4, the electromagnetic air pressure valve 9 is vertically arranged in the inspection channel 4, the electromagnetic air pressure valve 9 can control whether the inspection channel 4 is connected, the inspection channel 4 between the electromagnetic air pressure valve 9 and the inner sealing door 5 is a decompression section 41, the first pressure detection sensor 8 is arranged in the decompression section 41, and the first pressure detection sensor 8 is used to detect the pressure of the gas in the decompression section 41;

[0024] The inner sealing door 5 is an electronic door. The inner sealing door 5, the electromagnetic air pressure valve 9 and the first pressure detection sensor 8 are all electrically connected to the controller. The opening and closing of the inner sealing door 5 and the electromagnetic air pressure valve 9 are controlled by the controller.

[0025] The anti-slip protrusion 6 can reduce the possibility of sliding between the sealing structure and the surrounding rock, improve the anti-slip sealing ability of the sealing structure, and can effectively reduce the length of the sealing structure, reduce the project cost, and shorten the construction period.

[0026] The blocking body 2 and the anti-slip protrusion 6 are usually cast by concrete. In order to facilitate construction, the blocking body 2 is cylindrical, and the blocking body 2 and the anti-slip protrusion 6 are an integrated structure.

[0027] The anti-slip protrusion 6 serves to improve the anti-slip blocking ability of the blocking structure. In order to ensure its use effect, a preferred structure of the anti-slip protrusion 6 of the present invention is: Figure 1 As shown, the anti-slip protrusion 6 includes a first anti-slip section 61 and a second anti-slip section 62. The first anti-slip section 61 and the second anti-slip section 62 are truncated cone-shaped. From the inside to the outside of the blocking body 2, the cross-sectional circular diameter of the first anti-slip section 61 gradually increases, and the cross-sectional circular diameter of the second anti-slip section 62 gradually decreases.

[0028] During maintenance, maintenance personnel enter the high-pressure gas storage cavern 1 through the maintenance passage 4, and the shape of the maintenance passage 4 is preferably rectangular. In order to protect the maintenance passage 4, an outer sealing door 7 is provided on the outer side of the maintenance passage 4.

[0029] The high-pressure annular gas storage underground cavern arrangement structure includes a high-pressure gas storage cavern 1 and a construction channel 3, and also includes the above-mentioned high-pressure gas storage underground cavern sealing structure and a second pressure detection sensor 10. The high-pressure gas storage cavern 1 is connected to the inner side of the sealing body 2, and the construction channel 3 is connected to the outer side of the sealing body 2; the second pressure detection sensor 10 is arranged in the high-pressure gas storage cavern 1, and the second pressure detection sensor 10 is electrically connected to the controller. The second pressure detection sensor 10 is used to detect the gas pressure in the high-pressure gas storage cavern 1 and transmit the detected data to the controller.

[0030] The steps before the maintenance personnel carry out maintenance are as follows: S1: The maintenance personnel open the outer sealing door 7 and the electromagnetic air pressure valve 9 through the controller to balance the gas pressure in the pressure reducing section 41 with the atmospheric pressure; S2: The controller controls the closing of the electromagnetic air pressure valve 9 and the opening of the inner sealing door 5 in turn to allow the high-pressure gas in the high-pressure gas storage cavern 1 to enter the pressure reducing section 41, and the first pressure detection sensor 8 detects the gas pressure in the pressure reducing section 41 at this time, and transmits the detected data to the controller; S3: When the gas pressure in the pressure reducing section 41 reaches the set threshold, the controller controls the closing of the inner sealing door 5 and the opening of the electromagnetic air pressure valve 9 in turn until the gas pressure in the maintenance channel is balanced with the atmospheric pressure; S4: Repeat steps S1-S3 until the gas pressure in the high-pressure gas storage cavern 1 is balanced with the gas pressure in the maintenance channel 4, and the maintenance personnel and equipment enter the high-pressure gas storage cavern 1 for maintenance.

[0031] In order to effectively reduce the gas temperature in the high-pressure gas storage cavern 1, the high-pressure gas storage cavern 1 is an annular structure.

[0032] In order to further improve the anti-sliding ability of the plugging structure and enhance the overall strength of the compressed gas storage cavern 1, the construction channel 3 and the plugging structure, Figure 1 As shown, anchor structures are arranged on the outer sides of the high-pressure gas storage cavern 1, the construction channel 3 and the plugging structure.

Claims

1. A high-pressure gas storage underground cavern plugging structure, comprising a plugging body (2), wherein the plugging body (2) is provided with an inspection passage (4) arranged along its length, and an inner sealing door (5) is provided inside the inspection passage (4), characterized in that: An anti-slip protrusion (6) is connected to the outer side of the middle part of the blocking body (2); It also includes a controller, a first pressure detection sensor (8) and an electromagnetic air pressure valve (9), wherein the electromagnetic air pressure valve (9) is arranged in the middle of the inspection channel (4), the inspection channel (4) between the electromagnetic air pressure valve (9) and the inner sealing door (5) is a pressure reducing section (41), and the first pressure detection sensor (8) is arranged in the pressure reducing section (41); The inner sealing door (5) is an electronic door, and the inner sealing door (5), the electromagnetic air pressure valve (9) and the first pressure detection sensor (8) are all electrically connected to the controller.

2. The high-pressure gas storage underground cavern sealing structure according to claim 1, characterized in that: The blocking body (2) is cylindrical.

3. The high-pressure gas storage underground cavern sealing structure according to claim 2, characterized in that: The anti-slip protrusion (6) comprises a first anti-slip section (61) and a second anti-slip section (62); the first anti-slip section (61) and the second anti-slip section (62) are truncated cone-shaped; from the inside to the outside of the blocking body (2), the cross-sectional circular diameter of the first anti-slip section (61) gradually increases, while the cross-sectional circular diameter of the second anti-slip section (62) gradually decreases.

4. The high-pressure gas storage underground cavern sealing structure according to claim 1, characterized in that: The blocking body (2) and the anti-slip protrusion (6) are an integrated structure.

5. The high-pressure gas storage underground cavern sealing structure according to claim 1, characterized in that: The shape of the inspection channel (4) is rectangular, and an outer sealing door (7) is arranged on the outer side of the inspection channel (4).

6. The high-pressure gas storage underground cavern sealing structure according to any one of claims 1 to 5, characterized in that: The inspection channel (4) between the outer sealing door (7) and the air pressure valve (9) is provided with an enlarged section (42), and the cross-sectional area of ​​the enlarged section (42) is larger than the cross-sectional area of ​​other parts of the inspection channel (4).

7. A high-pressure annular gas storage underground cavern arrangement structure, comprising a high-pressure gas storage cavern (1) and a construction passage (3), characterized in that: It also includes a high-pressure gas storage underground cavern plugging structure as described in any one of claims 1 to 6, and a second pressure detection sensor (10), the high-pressure gas storage cavern (1) is connected to the inner side of the plugging body (2), and the construction channel (3) is connected to the outer side of the plugging body (2); The second pressure detection sensor (10) is arranged in the high-pressure gas storage chamber (1), and the second pressure detection sensor (10) is electrically connected to the controller.

8. The high-pressure annular gas storage underground cavern arrangement structure according to claim 7, characterized in that: The high-pressure gas storage cavern (1) is an annular structure.

9. The high-pressure annular gas storage underground cavern arrangement structure according to claim 7, characterized in that: Anchor structures are provided on the outer sides of the high-pressure gas storage cavern (1), the construction passage (3) and the plugging structure.

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