Construction device for flexible sealing layer of compressed air energy storage underground cavern

Abstract

The invention discloses a compressed air energy storage underground cavern flexible sealing layer construction device which comprises a construction rack, a track, a plurality of first cantilevers, a plurality of second cantilevers and a plurality of third cantilevers, the construction rack is installed on the track, the track is formed by splicing a plurality of track sections, and a plurality of telescopic mechanisms are horizontally installed on the construction rack; each first cantilever, each second cantilever and each third cantilever are coaxially connected with the output ends of the telescopic mechanisms respectively, a working platform is installed at the end of each third cantilever, a first supporting arm is perpendicularly arranged at the end of each first cantilever, a first tray is installed at the end of each first supporting arm, and a second supporting arm is perpendicularly arranged at the end of each second supporting arm. A second supporting arm is vertically arranged at the end of each second cantilever, and a second tray is installed at the end of each second supporting arm. By means of the device, construction of the integral flexible sealing layer can be conveniently and efficiently achieved, and the device is low in manufacturing cost, high in practicability, capable of being repeatedly used, capable of being suitable for caverns of different section types and wide in application range.

Description

Technical Field

[0001] The invention relates to the field of underground energy storage, and in particular to a construction device for a flexible sealing layer of a compressed air energy storage underground cavern. Background Art

[0002] Compressed gas energy storage power stations have a long service life, generally more than 30 years, and usually operate one cycle per day. The special operation mode and long service life make the sealing requirements of underground caverns extremely strict.

[0003] The newly built compressed air energy storage underground cavern has a structure similar to that of a tunnel, such as the primary lining and the secondary lining, but it is essentially different from the tunnel structure. The compressed air energy storage cavern will be subjected to the effects of cyclic temperature and pressure for a long time, so special materials are needed to seal the inner surface of the cavern. Compressed air energy storage underground caverns usually use steel plates or flexible sealing layers to seal the caverns, and flexible sealing layers have great application prospects due to their low cost. Commonly used flexible sealing layer materials include butyl rubber, nitrile rubber, EPDM rubber, etc. Compressed air energy storage underground caverns generally adopt a circular cross-section, which increases the difficulty of construction compared to tunnel caverns (usually containing road surfaces), and the flexible sealing layer materials are generally anchored, bonded or vulcanized.

[0004] The invention with application number 201410174203.2 and titled "A method for constructing a compressed air energy storage cavern" published on September 3, 2014, discloses a construction method for an adhesive flexible sealing layer, which uses hot-melt adhesive to splice and paste polymer materials on the inner wall of the cavern to achieve the sealing of the cavern. The invention with application number 202110665113.3 and titled "Compressed air energy storage lining cavern with integral rubber bladder seal" published on November 18, 2022, uses a vulcanizer to vulcanize and connect the segmented sealing layers into a bladder-shaped whole in the compressed air energy storage cavern, and hangs the rubber bladder on the inner wall of the lining by means of slings and buckles. However, neither of the above two patents proposes a specific supporting construction device. It is difficult to realize the on-site vulcanization splicing of large-diameter rubber rings with existing equipment and technology, and the slings and buckles are not enough to fix the rubber bladder weighing several hundred kilograms per linear meter on the inner wall of the cavern. Therefore, there is an urgent need to develop a set of construction equipment specifically suitable for the flexible sealing layer of compressed gas energy storage underground caverns, which can provide important implementation guarantees for the construction of compressed gas energy storage underground caverns. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a construction device for a flexible sealing layer of a compressed air energy storage underground cavern. The construction device can be used to conveniently and efficiently construct an integral flexible sealing layer. The construction device has low manufacturing cost, strong feasibility, and can be reused. It is applicable to caverns of different cross-sectional types and has a wide range of applications.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a construction device for a flexible sealing layer of a compressed air energy storage underground cavern, comprising a construction platform, a track, a plurality of first cantilevers, a plurality of second cantilevers and a plurality of third cantilevers, wherein the construction platform is slidably mounted on the track through rollers, the track is formed by splicing a plurality of detachable track sections, the track is laid on the ground of a compressed air energy storage underground cavern where a flexible sealing layer is to be constructed, the two ends of the compressed air energy storage underground cavern are respectively connected with vertical shafts, a plurality of groups of telescopic mechanisms are horizontally mounted on the construction platform, and each of the The first cantilever, each of the second cantilever and each of the third cantilever are coaxially connected to the output ends of a group of the telescopic mechanisms, respectively; a working platform is installed at the end of each of the third cantilever, and the working platform is used to carry workers; a first support arm is vertically arranged at the end of each of the first cantilever, and a first tray is installed at the end of the first support arm; a second support arm is vertically arranged at the end of each of the second cantilever, and a second tray is installed at the end of the second support arm; the flexible sealing layer is a rubber bag formed by splicing two hemispherical rubber ends and a plurality of rubber rings.

[0007] The construction process of the construction device of the compressed air energy storage underground cavern flexible sealing layer of the present invention is as follows:

[0008] 1) Before the construction of the flexible sealing layer, firstly, a track is laid on the ground inside the compressed gas energy storage underground cavern where the flexible sealing layer is to be constructed, and then a construction platform is placed on the track;

[0009] 2) The first rubber ring is transported from the rear end hole of the cavern into the cave, so that a plurality of first pallets hold the rear end of the first rubber ring, and a plurality of second pallets hold the front end of the first rubber ring, and the position of the first rubber ring is adjusted by the telescopic mechanism, and then the operator is transported to the designated construction position by the third cantilever, and the operator anchors the rear end of the first rubber ring to the rear end of the cavern wall, and preliminarily anchors the front end of the first rubber ring to the cavern wall, thereby completing the installation of the first rubber ring;

[0010] 3) The construction platform slides forward along the track for a distance, then removes the track section on the rear side of the construction platform, and installs the removed track section on the front end of the track. After that, the second rubber ring is manually transported from the rear end hole of the cavern into the cave, so that a number of first pallets support the rear end of the second rubber ring, and a number of second pallets support the front end of the second rubber ring. The position of the second rubber ring is adjusted by the telescopic mechanism, so that the front end of the first rubber ring is sleeved on the outside of the rear end of the second rubber ring. Then, the operator is transported to the designated construction position by the third cantilever, and the operator anchors the front end of the first rubber ring and the rear end of the second rubber ring to the cavern wall together, and preliminarily anchors the front end of the second rubber ring to the cavern wall, completing the installation of the second rubber ring;

[0011] 4) Repeat step 3) to complete the construction of the third rubber ring, and repeat this process until all rubber rings are installed. At this time, the several rubber rings spliced ​​together cover the entire inner surface of the cavern in the longitudinal direction;

[0012] 5) Move the track and the construction platform out of the cavern, and transport the two hemispherical rubber ends into the cavern respectively. Then, build plugs and sealing doors at the front and rear ends of the cavern respectively. Then, the workers enter the cavern through the sealing doors. By setting up ladders, they manually install the hemispherical rubber ends at the front and rear ends of the cavern respectively. The two hemispherical rubber ends are spliced ​​with several rubber rings into a rubber bag. After that, the workers exit the cavern from the sealing door and close the sealing door to complete the construction of the flexible sealing layer.

[0013] Preferably, a first ball hinge is vertically mounted on the end of each first cantilever, and the first ball hinge is connected to the first support arm; and a second ball hinge is vertically mounted on the end of each second cantilever, and the second ball hinge is connected to the second support arm.

[0014] Preferably, the several groups of telescopic mechanisms are respectively electric push rods, cylinders or hydraulic rods.

[0015] Preferably, the flexible sealing layer is a rubber bag formed by splicing two hemispherical rubber end heads and a plurality of rubber rings. The ends of one hemispherical rubber end head, a plurality of rubber rings and another hemispherical rubber end head are nested and overlapped in sequence along the longitudinal direction of the compressed air energy storage underground cavern. During the construction process, the constructed part is supported by a plurality of the first pallets, and the part to be constructed is supported by a plurality of the second pallets.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] (1) The present invention adopts a track-type construction device, which can be used to construct a flexible sealing layer in a compressed air energy storage underground cavern with a circular cross-section, thereby avoiding the disadvantage that traditional tunnel construction equipment can only operate on a horizontal road surface. The construction device of the present invention can be applied to caverns with different cross-sections, and has a wider range of applications;

[0018] (2) The present invention adopts a retractable cantilever that can move forward and backward freely, and conveniently and efficiently realizes the construction of an integral flexible sealing layer, avoiding the defect that traditional tunnel construction equipment can only construct the flexible sealing layer in blocks and then bond it, so that the ground construction of the integral flexible sealing layer can be realized;

[0019] (3) The construction device of the present invention has low manufacturing cost, strong feasibility, and can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the construction state of the construction device in the embodiment;

[0021] Figure 2 This is a schematic diagram of the effect of the construction of a flexible sealing layer for the compressed air energy storage underground cavern in the embodiment;

[0022] The specific reference numerals in the figure are as follows:

[0023] 1- construction platform, 2- track, 3- first cantilever, 4- second cantilever, 5- third cantilever, 6- roller, 7- flexible sealing layer, 8- compressed air energy storage underground cavern, 9- vertical shaft, 10- working platform, 11- first support arm, 12- first tray, 13- second support arm, 14- second tray, 15- hemispherical rubber end, 16- rubber ring, 17- first ball hinge, 18- second ball hinge, 19- plug, 20- sealing door, 21- tunnel, 22- surrounding rock, 23- concrete lining. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the embodiments of the drawings. All components or structures not limited in the present invention adopt conventional technical means in the mechanical field.

[0025] The construction device of the flexible sealing layer of the compressed air energy storage underground cavern of the embodiment is as follows Figure 1 and Figure 2As shown, it includes a construction platform 1, a track 2, a first cantilever 3, four second cantilever 4 and a third cantilever 5. The construction platform 1 is slidably mounted on the track 2 through rollers 6. The track 2 is spliced ​​by a number of detachable track sections. The track 2 is laid on the ground of a compressed air energy storage underground cavern 8 to be constructed with a flexible sealing layer 7. Both ends of the compressed air energy storage underground cavern 8 are connected to vertical shafts 9 through tunnels 21. The number of vertical shafts 9 is at least 2, which are used to transport machinery, materials and workers. Six sets of telescopic mechanisms (not shown in the figure) are horizontally installed on the construction platform 1. In this embodiment, the telescopic mechanism adopts an electric push rod. Each first cantilever The arm 3, each second cantilever 4 and each third cantilever 5 are respectively coaxially connected to the output end of a group of telescopic mechanisms. A working platform 10 is installed at the end of each third cantilever 5, and the working platform 10 is used to carry workers. A first support arm 11 is vertically arranged at the end of each first cantilever 3, and a first tray 12 is installed at the end of the first support arm 11. A second support arm 13 is vertically arranged at the end of each second cantilever 4, and a second tray 14 is installed at the end of the second support arm 13. The flexible sealing layer 7 is a rubber bag spliced ​​by two hemispherical rubber ends 15 and a plurality of rubber rings 16. In this embodiment, the rubber material is butyl rubber.

[0026] A first ball hinge 17 is vertically mounted on the end of each first cantilever 3 , and the first ball hinge 17 is connected to the first support arm 11 . A second ball hinge 18 is vertically mounted on the end of each second cantilever 4 , and the second ball hinge 18 is connected to the second support arm 13 .

[0027] The construction process of the above-mentioned construction device is as follows:

[0028] 1) Before the construction of the flexible sealing layer 7, firstly, a track 2 is laid on the ground inside the compressed gas energy storage underground cavern 8 where the flexible sealing layer 7 is to be constructed, and then a construction stand 1 is placed on the track 2;

[0029] 2) The first rubber ring 16 is transported from the rear end hole of the cave chamber into the cave, so that a first tray 12 supports the top of the rear end of the first rubber ring 16, and a plurality of second trays 14 support the top and side of the front end of the first rubber ring 16 (the first rubber ring 16 is as shown in FIG. Figure 1 The position of the first rubber ring 16 is adjusted by the telescopic mechanism, and the operator is then transported to the designated construction position by the third cantilever 5. The operator anchors the rear end of the first rubber ring 16 to the rear end of the cave wall of the cave, and preliminarily anchors the front end of the first rubber ring 16 to the cave wall of the cave, thus completing the installation of the first rubber ring 16;

[0030] 3) The construction platform 1 slides forward along the track 2 for a distance, then removes the track section on the rear side of the construction platform 1, and installs the removed track section on the front end of the track 2. Thereafter, the second rubber ring 16 is manually transported from the rear end hole of the cave into the cave, so that a plurality of first trays 12 support the rear end of the second rubber ring 16, and a plurality of second trays 14 support the front end of the second rubber ring 16. The position of the second rubber ring 16 is adjusted by the telescopic mechanism so that the front end of the first rubber ring 16 is sleeved on the outside of the rear end of the second rubber ring 16. Then, the operator is transported to the designated construction position by the third cantilever 5, and the operator anchors the front end of the first rubber ring 16 and the rear end of the second rubber ring 16 to the cave wall of the cave, and preliminarily anchors the front end of the second rubber ring 16 to the cave wall of the cave, thereby completing the installation of the second rubber ring 16.

[0031] 4) Repeat step 3) to complete the construction of the third rubber ring 16, and repeat this process until all rubber rings 16 are installed. At this time, the several rubber rings 16 spliced ​​together cover the entire inner surface of the cave in the longitudinal direction;

[0032] 5) Move the track 2 and the construction platform 1 out of the cavern, and transport the two hemispherical rubber end heads 15 into the cavern respectively, and then build a plug 19 and a sealing door 20 at the front and rear ends of the cavern respectively, and then the workers enter the cavern through the sealing door 20, and manually install the hemispherical rubber end heads 15 at the front and rear ends of the cavern by setting up a ladder, and splice the two hemispherical rubber end heads 15 with several rubber rings 16 into a rubber bag. After that, the workers exit the cavern from the sealing door 20 and close the sealing door 20, thus completing the construction of the flexible sealing layer 7.

[0033] The schematic diagram of the effect of the compressed gas energy storage underground cavern 8 after the flexible sealing layer 7 is constructed is as follows Figure 2 The compressed gas energy storage underground cavern 8 is arranged in the surrounding rock 22, and the flexible sealing layer 7 is arranged on the inner surface of the concrete lining 23. The sealing door 20 is usually also the place where the charging and discharging gas pipelines enter and exit, and the sealing door 20 will only be opened under maintenance conditions.

Claims

1. A construction device for a flexible sealing layer of an underground cavern for compressed air energy storage, characterized in that: The utility model comprises a construction platform, a track, a plurality of first cantilevers, a plurality of second cantilevers and a plurality of third cantilevers. The construction platform is slidably mounted on the track through rollers. The track is formed by splicing a plurality of detachable track sections. The track is laid on the ground of a compressed air energy storage underground cavern where a flexible sealing layer is to be constructed. Vertical shafts are respectively connected at both ends of the compressed air energy storage underground cavern. A plurality of groups of telescopic mechanisms are horizontally mounted on the construction platform. Each of the first cantilever, each of the second cantilever and each of the third cantilever are respectively coaxially connected to an output end of a group of the telescopic mechanisms. A working platform is installed at the end of each of the third cantilever. The working platform is used to carry workers. A first supporting arm is vertically arranged at the end of each of the first cantilever. A first tray is installed at the end of the first supporting arm. A second supporting arm is vertically arranged at the end of each of the second cantilever. A second tray is installed at the end of the second supporting arm. The flexible sealing layer is a rubber bag formed by splicing two hemispherical rubber ends and a plurality of rubber rings.

2. The construction device for the flexible sealing layer of the compressed air energy storage underground cavern according to claim 1 is characterized in that: A first ball hinge is vertically mounted on the end of each first cantilever, and the first ball hinge is connected to the first support arm. A second ball hinge is vertically mounted on the end of each second cantilever, and the second ball hinge is connected to the second support arm.

3. The construction device for the flexible sealing layer of the compressed air energy storage underground cavern according to claim 1 or 2, characterized in that: The several groups of telescopic mechanisms are respectively electric push rods, cylinders or hydraulic rods.

4. The construction device for the flexible sealing layer of the compressed air energy storage underground cavern according to claim 1 is characterized in that: The construction process is: 1) Before the construction of the flexible sealing layer, firstly, a track is laid on the ground inside the compressed gas energy storage underground cavern where the flexible sealing layer is to be constructed, and then a construction platform is placed on the track; 2) The first rubber ring is transported from the rear end hole of the cavern into the cave, so that a plurality of first pallets hold the rear end of the first rubber ring, and a plurality of second pallets hold the front end of the first rubber ring, and the position of the first rubber ring is adjusted by the telescopic mechanism, and then the operator is transported to the designated construction position by the third cantilever, and the operator anchors the rear end of the first rubber ring to the rear end of the cavern wall, and preliminarily anchors the front end of the first rubber ring to the cavern wall, thereby completing the installation of the first rubber ring; 3) The construction platform slides forward along the track for a distance, then removes the track section on the rear side of the construction platform, and installs the removed track section on the front end of the track. After that, the second rubber ring is manually transported from the rear end hole of the cavern into the cave, so that a number of first pallets support the rear end of the second rubber ring, and a number of second pallets support the front end of the second rubber ring. The position of the second rubber ring is adjusted by the telescopic mechanism, so that the front end of the first rubber ring is sleeved on the outside of the rear end of the second rubber ring. Then, the operator is transported to the designated construction position by the third cantilever, and the operator anchors the front end of the first rubber ring and the rear end of the second rubber ring to the cavern wall together, and preliminarily anchors the front end of the second rubber ring to the cavern wall, completing the installation of the second rubber ring; 4) Repeat step 3) to complete the construction of the third rubber ring, and repeat this process until all rubber rings are installed. At this time, the several rubber rings spliced ​​together cover the entire inner surface of the cavern in the longitudinal direction; 5) Move the track and the construction platform out of the cavern, and transport the two hemispherical rubber ends into the cavern respectively. Then, build plugs and sealing doors at the front and rear ends of the cavern respectively. Then, the workers enter the cavern through the sealing doors. By setting up ladders, they manually install the hemispherical rubber ends at the front and rear ends of the cavern respectively. The two hemispherical rubber ends are spliced ​​with several rubber rings into a rubber bag. After that, the workers exit the cavern from the sealing door and close the sealing door to complete the construction of the flexible sealing layer.

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