This application claims priority to Chinese Patent Application No. 202410438454.0, filed on Apr. 12, 2024, the contents of which are hereby incorporated by reference.
The disclosure belongs to the technical field of underground gas storage, and particularly relates to a sealing structure of an underground high-pressure gas storage and a construction method thereof.
Underground gas storage is an important gas storage facility formed by injecting high-pressure gas into underground cavity, which plays a key role in ensuring energy security. The construction of underground gas storage is faced with complex geological structure and high operating pressure, which requires the sealing structure of gas storage to have certain ductility under high gas pressure.
In the prior art, the China disclosure patent application with the publication number of CN117759336A proposes an underground gas storage and a layout method. The gas storage includes underground cavity, a lining layer arranged on the inner wall of underground cavity, and a sealing layer arranged on the inner side of the lining layer. The lining layer is surrounded by a plurality of concrete lining blocks, and two adjacent concrete lining blocks are movably connected through a connecting assembly. The above structure aims to solve the technical problem of poor tensile performance of concrete lining layer in the prior art. However, the technical scheme still has the problem of poor ductility, especially under the condition of high-pressure gas pressure, its ductility may not reach the expected effect.
In view of this, it is necessary to propose a sealing structure of underground high-pressure gas storage and a construction method thereof to solve the above problems.
The present disclosure aims to solve the above technical problems to some extent. Therefore, the disclosure provides a sealing structure of an underground high-pressure gas storage and a construction method thereof, so as to solve the problem of insufficient ductility of the sealing structure of the gas storage under high-pressure gas pressure.
In order to achieve the above object, in one aspect, the present disclosure provides a sealing structure of an underground high-pressure gas storage, including:
Based on the above structure, the gas storage is capable of being deformed greatly, the gas storage pressure may be further improved, and may adapt to the geological conditions of soft rocks.
Optionally, the concrete segments are 1/N of the annular lining structure.
Optionally, empty slots are respectively arranged near both ends of each of the inner side of the concrete segments; each of the empty slots is provided with an outlet towards an inner wall of each of the concrete segments; two ends of each of the closed steel sheets respectively enter the empty slots of two adjacent concrete segments to form a connection.
Optionally, two ends of each of the closed steel sheet are provided with T-shaped structures adapted to the empty slots.
Optionally, pressure sensors in contact with the T-shaped structures are arranged in each of the empty slot. When the maximum gas storage pressure is reached, the closed steel sheets are pulled, and the T-shaped structures at both ends contact the pressure sensors, and the pressure sensor will obtain an alarm.
Optionally, a part of each of the closed steel sheets not entering each of the empty slots is arc-shaped, and a radian is consistent with a radian of an inner wall of the annular lining structure.
Optionally, a width of the outlet is consistent with a thickness of each of the closed steel sheets.
Optionally, the sealing layer is an integral annular body made of rubber.
Optionally, a deformation of the sealing layer and the concrete segments is consistent.
On the other hand, the disclosure provides a construction method of a sealing structure of an underground high-pressure gas storage, which is used for installing the sealing structure of the underground high-pressure gas storage, and the method includes the following steps:
The disclosure discloses the following beneficial effect.
The sealing structure of underground high-pressure gas storage has good ductility, and based on this characteristic, the gas storage may be deformed greatly, and the gas storage pressure may be further improved, thus adapting to the geological conditions of soft rock layers.
In order to explain the embodiments of the present disclosure or the technical scheme in the prior art more clearly, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without creative work for ordinary people in the field.
In the following, the technical scheme in the embodiment of the disclosure will be clearly and completely described with reference to the attached drawings. Obviously, the described embodiments are only a part of the embodiments of the disclosure, but not the whole embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without creative labor belong to the scope of protection of the present disclosure.
In order to make the above objects, features and advantages of the present disclosure more obvious and easy to understand, the present disclosure will be further described in detail with the attached drawings and specific embodiments.
Referring to
In the further optimization scheme, as shown in
In a further optimization scheme, as shown in
In a further optimization scheme, as shown in
In a further optimization scheme, the deformation of the sealing layer 3 and the concrete segments 1 is coordinated.
In a further optimization scheme, the sealing layer 3 changes the stiffness of the sealing layer 3 through the number of cord layers, so as to adapt to the consistent deformation of the sealing layer 3 and the concrete segments 1 under different working conditions (such as maximum sealing pressure and different geological conditions).
To further optimize the scheme, as shown in
In a further optimization scheme, the concrete segments 1 may be cast-in-place concrete lining blocks or precast concrete lining blocks.
Further optimizing the scheme, the thickness of each part of the concrete segment 1 is consistent; the thickness of the concrete segment 1 is determined according to the comprehensive factors such as the design size of the gas storage and the strength of the surrounding rock of the cavern, and is not specifically limited in this embodiment.
In a further optimization scheme, the closed steel sheets 2 are a solid steel sheet with a certain tensile strength, and the closed steel sheet 2 is integrally formed.
The working principle of the sealing structure of the underground high-pressure gas storage in the embodiment of the disclosure is as follows:
The disclosure also provides a construction method of the sealing structure of the underground high-pressure gas storage, as shown in
The details of the present disclosure are conventional technical means known to those skilled in the art.
In the description of the present disclosure, it should be understood that the orientation or positional relationships indicated by the terms “longitudinal”, “transverse”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” are based on the orientation or positional relationship shown in the drawings are only for the convenience of describing the disclosure, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the disclosure.
The above-mentioned embodiments only describe the preferred mode of the disclosure, and do not limit the scope of the disclosure. Under the premise of not departing from the design spirit of the disclosure, various modifications and improvements made by ordinary technicians in the field to the technical scheme of the disclosure shall fall within the protection scope determined by the claims of the disclosure.
Number | Date | Country | Kind |
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202410438454.0 | Apr 2024 | CN | national |
Number | Name | Date | Kind |
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3818710 | Chlumecky | Jun 1974 | A |
20230313681 | Yan et al. | Oct 2023 | A1 |
Number | Date | Country |
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208669320 | Mar 2019 | CN |
210564554 | May 2020 | CN |
212254422 | Dec 2020 | CN |
217712585 | Nov 2022 | CN |
116220744 | Jun 2023 | CN |
117759336 | Mar 2024 | CN |
2016020597 | Feb 2016 | JP |
Entry |
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English Machine Translation of CN-217712585-U (Year: 2022). |
English Machine Translation of CN-116220744-A (Year: 2023). |
Retrieval report-First search dated Aug. 19, 2024 in SIPO application No. 202410438454.0. |
Retrieval report-Supplementary search dated Sep. 3, 2024 in SIPO application No. 202410438454.0. |
Notification to Grant Patent Right for Invention dated Sep. 9, 2024 in SIPO application No. 02410438454.0. |
Notice of first Office action dated Aug. 20, 2024 in SIPO application No. 202410438454.0. |