CN116006261A - Underground gas storage chamber and compressed air energy storage system - Google Patents
Underground gas storage chamber and compressed air energy storage system Download PDFInfo
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- CN116006261A CN116006261A CN202310083558.XA CN202310083558A CN116006261A CN 116006261 A CN116006261 A CN 116006261A CN 202310083558 A CN202310083558 A CN 202310083558A CN 116006261 A CN116006261 A CN 116006261A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Abstract
The invention discloses an underground gas storage chamber and a compressed air energy storage system, and relates to the technical field of compressed air energy storage. The underground gas storage chamber comprises a gas storage cavity, wherein the gas storage cavity comprises an inner liner layer and a concrete layer, and the inner liner layer is arranged on the inner side of the concrete layer and expands or contracts in the concrete layer; the inner liner comprises a plurality of arched wave strips, and the length of each arched wave strip extends along the length direction of the gas storage cavity; each arched wave stripe comprises a left slat, an arc slat and a right slat which are connected in sequence, wherein the protruding part of the arc slat faces the inner side of the air storage cavity; each of the left slats is connected to the right slat of the adjacent other of the arcuate wave strips. The compressed air energy storage system comprises the underground gas storage chamber. The underground gas storage chamber solves the technical problem of high cost of underground gas storage technology in the prior art.
Description
Technical Field
The invention relates to the technical field of underground gas storage of compressed air energy storage, in particular to an underground gas storage chamber and a compressed air energy storage system.
Background
Compressed air energy storage technology is an electrical energy storage technology. When electricity is used in low-peak, the high-pressure air is released from the air storage system and is subjected to work generation through the expander to convert the air internal energy into electric energy to be released.
The compressed air energy storage system stores the high-pressure air through the air storage system, and the air storage pressure is usually about 10MPa, and belongs to a medium-high pressure range. The existing gas storage system is divided into an overground gas storage system and an underground gas storage system, and the underground gas storage system is particularly suitable for areas with underground excavation conditions such as underground stratum areas.
In the process of implementing the present invention, the inventor finds that at least the following problems exist in the prior art:
because the gas storage pressure of the underground gas storage chamber is in the medium-high pressure range, the underground gas storage chamber is required to have certain elastic deformation capacity. The prior underground gas storage chamber is usually spliced by steel plates, so that the deformation capacity of the underground gas storage chamber is limited by the yield strength of steel plates, and the prior underground gas storage chamber is mostly made of high-strength steel. Along with the development of the continuous operation trend of the compressed air energy storage system for a large scale and a long time, the gas storage amount of the corresponding matched gas storage system is required to be greatly increased, and therefore, if the inside of the underground gas storage chamber is still made of high yield strength steel, the cost of the gas storage system is greatly increased, the cost of the compressed air energy storage system is high, and the large-scale popularization and application are further difficult.
Based on the above, how to reduce the cost of the underground gas storage system on the premise of ensuring the safety of the system is a technical problem to be solved by the technicians in the field.
Disclosure of Invention
The invention aims to provide an underground gas storage chamber with low cost consumption and a compressed air energy storage system. In order to achieve the purpose, in one aspect, the underground gas storage chamber comprises a gas storage chamber, wherein the gas storage chamber comprises an inner liner layer and a concrete layer, and the inner liner layer is arranged on the inner side of the concrete layer and expands or contracts in the concrete layer; the method comprises the steps of carrying out a first treatment on the surface of the The inner liner comprises a plurality of arched wave strips, and the length of each arched wave strip extends along the length direction of the gas storage cavity; each arched wave stripe comprises a left slat, an arc slat and a right slat which are connected in sequence, wherein the protruding part of the arc slat faces the inner side of the air storage cavity; each of the left slats is connected to the right slat of the adjacent other of the arcuate wave strips.
Further, the arc-shaped lath comprises a left arc section, a middle arc section and a right arc section which are sequentially connected, the protruding part is positioned on the middle arc section, the left arc section is fixedly connected with the left lath in the length direction, and the right arc section is fixedly connected with the right lath in the length direction.
Further, a left sliding support is arranged between the left arc section and the concrete layer, and the left sliding support is connected with the left arc section.
Further, the left sliding support comprises a sliding plate surface and a supporting plate, and an adhesive is filled between the supporting plate, the sliding plate surface and the left arc section.
Further, a right sliding support is arranged between the right arc section and the concrete layer, and the right sliding support is connected with the right arc section.
Further, the right sliding support comprises a sliding plate surface and a supporting plate, and an adhesive is filled between the supporting plate, the sliding plate surface and the right arc section.
Further, the arc center of the left arc section and the arc center of the right arc section are both positioned at the inner side of the gas storage cavity.
Further, the left arc section and the right arc section are symmetrically arranged.
Further, the central angle of the left arc section is the same as the central angle of the right arc section.
Further, the central angle of the left arc section and the central angle of the right arc section are smaller than the central angle of the middle arc section.
Further, the inner liner layer includes 10 to 90 of the arcuate wave fringes.
On the other hand, a compressed air energy storage system is also provided, and the compressed air energy storage system comprises any one of the underground gas storage chambers.
The beneficial effects are that:
the scheme provides an underground gas storage chamber, including the gas storage chamber, the gas storage chamber includes inner liner and concrete layer, and the inner liner setting is in concrete layer's inboard to expand or shrink in concrete layer. Taking the case that the underground gas storage chamber is arranged on an underground rock layer as an example, mao Dong is firstly excavated according to the design size, and the inner surface of the cavern is the surrounding rock of the underground gas storage chamber. The gas storage cavity of the underground gas storage chamber comprises an inner liner layer and a concrete layer, wherein the inner liner layer is positioned at the innermost layer of the gas storage cavity, the concrete layer is positioned between the inner liner layer and the cavern, and the inner liner layer can slide relative to the concrete layer so as to expand when inflated and pressurized and shrink when deflated.
The inner liner comprises a plurality of arched wave strips, and the length of each arched wave strip extends along the length direction of the gas storage cavity; each arched wave stripe comprises a left slat, an arc slat and a right slat which are connected in sequence, and the protruding part of the arc slat faces the inner side of the gas storage cavity so as to bear the deformation of the gas storage cavity during shrinkage and expansion. Each left slat is connected with the right slat of the adjacent other arched wave stripe, namely, every two arched wave stripes are connected with the right slat of the arched wave stripe beside through the left slat of one arched wave stripe.
According to the air storage cavity, the internal pressure of the underground air storage chamber is borne through surrounding rock, the internal pressure is transmitted through the concrete layer, the lining layer comprises arched wave strips, the arched wave strips comprise protruding parts, the lining layer has certain flexibility, the lining layer can bear expansion deformation when internal stress is increased, the concrete layer can transmit the strain of the lining layer to the surrounding rock, and the surrounding rock is borne by the concrete layer without yielding. Because the lining layer comprises arched wave strips, the arched wave strips comprise protruding parts, and the pressure in the chamber can be dispersed through the protruding parts by the arched wave strips, when the same bearing pressure requirement exists, the lining layer comprising the arched wave strips can be made of a sheet material with smaller yield stretching amount or a sheet material with thinner sheet material. Therefore, on the premise of system safety, the underground gas storage system of the scheme has lower cost and has more advantages in the construction of the large-capacity underground gas storage chamber.
Drawings
FIG. 1 is a schematic diagram of the structure of an underground gas storage chamber of the present invention;
FIG. 2 is a schematic view of the structure of the gas storage chamber of the underground gas storage chamber of the present invention;
FIG. 3 is an enlarged partial schematic view of the portion I in FIG. 2;
FIG. 4 is a schematic cross-sectional view of an arcuate slat in an arcuate wave stripe;
fig. 5 is another configuration of the arcuate wave stripe.
In the figure: 100-lining layer; 200-concrete layer; 110-arcuate wave fringes; 111-left lath; 112-right lath; 113-arc-shaped laths; 1131-left arc segment; 1133—a middle arc segment; 1132-right arc segment; 310-left sliding support; 320-right sliding support; 311-sliding panel; 312-supporting the plate; 313-bond; 400-surrounding rock.
Detailed Description
In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
Embodiment one:
as shown in fig. 1 to 4, the present embodiment provides an underground gas storage chamber, which includes a gas storage chamber including an inner liner 100 and a concrete layer 200, wherein the inner liner 100 is disposed at an inner side of the concrete layer 200 and expands or contracts in the concrete layer 200. Taking the example that the underground gas storage chamber is arranged on the underground rock layer, mao Dong is firstly excavated according to the calculated design size, and the inner surface of the cavern, namely the surrounding rock 400 of the underground gas storage chamber. The gas storage cavity of the underground gas storage chamber comprises a lining layer 100 and a concrete layer 200, wherein the lining layer 100 is positioned at the innermost layer of the gas storage cavity, the concrete layer 200 is positioned between the lining layer and the cavern, and the lining layer 100 can slide relative to the concrete layer 200 so as to expand when inflated and pressurized and contract when deflated and depressurized.
Referring to fig. 3, the liner 100 includes a plurality of arched wave strips 110, and the length of each arched wave strip 110 extends along the length direction of the gas storage chamber; each arched wave stripe comprises a left slat 111, an arc slat 113 and a right slat 112 which are connected in sequence, and the protruding part of the arc slat 113 faces the inner side of the gas storage cavity so as to bear deformation when the gas storage cavity contracts and expands. Each left slat 111 is connected to the right slat 112 of the adjacent other arcuate corrugation, i.e. each arcuate corrugation is connected to the right slat of the adjacent arcuate corrugation by the left slat of one arcuate corrugation.
According to the air storage cavity, the internal pressure of the underground air storage chamber is borne through surrounding rock, the internal pressure is transmitted through the concrete layer, the lining layer comprises arched wave strips, the arched wave strips comprise protruding parts, the lining layer has certain flexibility, the lining layer can bear expansion deformation when internal stress is increased, the concrete layer can transmit the strain of the lining layer to the surrounding rock, and the surrounding rock is borne by the concrete layer without yielding. Because the lining layer comprises arched wave strips, the arched wave strips comprise protruding parts, and the pressure in the chamber can be dispersed through the protruding parts by the arched wave strips, when the same bearing pressure requirement exists, the lining layer comprising the arched wave strips can be made of a sheet material with smaller yield stretching amount or a sheet material with thinner sheet material. Therefore, on the premise of system safety, the underground gas storage system of the scheme has lower cost and more outstanding economical performance in the construction of the large-capacity underground gas storage chamber.
Further, as shown in fig. 1, an anchoring structure is provided at the surrounding rock 400.
As shown in fig. 4, further, one structure of the arched wave stripe is: the arc-shaped slat 113 comprises a left arc section 1131, a middle arc section 1133 and a right arc section 1132 which are sequentially connected, the protruding part of the arc-shaped slat 113 is positioned at the middle arc section 1133, the left arc section 1131 is fixedly connected with the left slat 111 in the length direction, and the right arc section 1132 is fixedly connected with the right slat 112 in the length direction.
Preferably, the left arc section 1131, the middle arc section 1133 and the right arc section 1132 are smoothly connected, so that the arch-shaped wave stripe of the arc-shaped slat 113 with the structure has better bearing effect and more uniform strain in bearing. In this embodiment, the left arc segment 1131, the middle arc segment 1133 and the right arc segment 1132 of the arc-shaped slat 113 may be an integrally formed structure, and manufactured by a stamping process.
Further, as shown in fig. 4, a left sliding support 310 is provided between the left arc section 1131 of the arc-shaped slat 113 and the concrete layer 200 of the air storage cavity, and the left sliding support 310 is connected with the left arc section 1131 of the arc-shaped slat 113; and/or, a right sliding support 320 is arranged between the right arc section 1132 of the arc-shaped slat 113 and the concrete layer 200, and the right sliding support 320 is connected with the right arc section 1132. The left sliding support 310 serves to increase the rigidity and smoothness of sliding between the arc-shaped lath and the concrete layer 200 of the air storage chamber. Preferably, sliding supports are respectively arranged at the left arc section 1131 and the right arc section 1132 of one arc-shaped slat 113, namely, a left sliding support 310 is arranged between the left arc section 1131 and the concrete layer 200, and a right sliding support 320 is arranged between the right arc section 1132 and the concrete layer 200, so that the lining layer is more stable in sliding relative to the concrete layer during expansion and contraction, and further the lining layer and the whole underground gas storage chamber are more stable during deflation.
As shown in fig. 4, further, the left sliding support 310 includes a sliding plate 311 and a supporting plate 312, and an adhesive 313 is filled between the supporting plate 312, the sliding plate 311 and a left arc 1131 of the arc-shaped slat 113. Further, the right sliding support 320 includes a sliding plate surface and a support plate, and an adhesive is filled between the support plate, the sliding plate surface and the right arc section. The left sliding support 310 is fixedly connected with the left arc section 1131 of the arc-shaped slat 113 by filling an adhesive. Likewise, the right sliding supporter 320 is fixedly coupled with the right arc segment 1132 of the arc-shaped slat 113 by filling an adhesive. The adhesive may be an adhesive for bonding concrete, an adhesive for concrete, or the like.
Further, as shown in fig. 4, the protruding portion of the arcuate slat 113 faces the inside of the air storage chamber, its arc center O 3 The arc center O of the left arc section 1131 is positioned at the outer side of the air storage cavity 1 And arc center O of right arc segment 1132 2 Are all positioned at the inner side of the air storage cavity, and the arc center O of the middle arc section 1133 3 Is positioned outside the air storage cavity. The left arc 1131 and the right arc 1132 are symmetrically disposed. The central angle of the left arc section is the same as that of the right arc section, and the pressure bearing effect of the air storage cavity is further improved.
As shown in fig. 5, further, another structure of the arched wave stripe is: the arc-shaped slat 113 is an arc, and two ends of the arc-shaped slat 113 are respectively provided with a left slat 111 and a right slat 112. Alternatively, the left slat 111 and the right slat 112 are welded to both ends of the arc slat 113, respectively. At this time, left and right sliding supports 310 and 320 may be still provided between the arc-shaped lath 113 and the concrete layer 200 of the air storage chamber.
As shown in fig. 1 and 2, further, the inner liner layer includes 10 to 90 of the arched wave fringes. Further, the arched wave patterns 110 are uniformly arranged around the circumference of the lining layer 100.
Further, a preferable structure of the present embodiment is as follows: if 90 arched wave fringes are arranged, 15 arched wave fringes can be arranged on one steel plate, and the gas storage cavity is formed by splicing 6 plates in a circle. Further, when 15 arched wave strips are arranged on one steel plate, each arched wave strip 110 may be simultaneously provided with the left sliding support 310 and the right sliding support 320, or one to two arched wave strips thereon may be selected to be simultaneously provided with the left sliding support 310 and the right sliding support 320.
Embodiment two:
the embodiment discloses a compressed air energy storage system, which comprises any one of the underground gas storage chambers in the first embodiment. Due to the adoption of the underground gas storage chamber for implementation, the cost of the whole compressed air energy storage system is reduced, the system can run for a long time, and the system is more suitable for large-scale popularization and application.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (12)
1. The underground gas storage chamber is characterized by comprising a gas storage cavity, wherein the gas storage cavity comprises an inner liner layer and a concrete layer, and the inner liner layer is arranged on the inner side of the concrete layer and expands or contracts in the concrete layer;
the inner liner comprises a plurality of arched wave strips, and the length of each arched wave strip extends along the length direction of the gas storage cavity;
each arched wave stripe comprises a left slat, an arc slat and a right slat which are connected in sequence, and the protruding part of the arc slat faces the inner side of the gas storage cavity; each of the left slats is connected to the right slat of an adjacent other of the arcuate wave strips.
2. The underground gas storage chamber of claim 1, wherein the arcuate strips comprise a left arc segment, a middle arc segment and a right arc segment connected in sequence, the protruding portion is located in the middle arc segment, the left arc segment is fixedly connected with the left strip in the length direction, and the right arc segment is fixedly connected with the right strip in the length direction.
3. The underground gas storage chamber of claim 2, wherein a left sliding support is disposed between the left arc segment and the concrete layer, and the left sliding support is connected to the left arc segment.
4. A subterranean gas storage chamber according to claim 3, wherein the left sliding support comprises a sliding plate surface and a support plate, and wherein an adhesive is filled between the support plate, the sliding plate surface and the left arc section.
5. The underground gas storage chamber of claim 2, wherein a right sliding support is disposed between the right arc segment and the concrete layer, the right sliding support being connected to the right arc segment.
6. The underground gas storage chamber of claim 5, wherein the right sliding support comprises a sliding plate surface and a supporting plate, and an adhesive is filled between the supporting plate, the sliding plate surface and the right arc section.
7. The underground gas storage chamber of claim 2, wherein the arc center of the left arc segment and the arc center of the right arc segment are both located inside the gas storage chamber.
8. The underground gas storage chamber of claim 2, wherein the left arc section and the right arc section are symmetrically disposed.
9. The underground gas storage chamber of claim 2, wherein the central angle of the left arc segment is the same as the central angle of the right arc segment.
10. The underground gas storage chamber of claim 2, wherein the central angle of the left arc segment and the central angle of the right arc segment are both smaller than the central angle of the middle arc segment.
11. The underground gas storage chamber of claim 1, wherein the liner comprises between 10 and 90 of the arcuate wave fringes.
12. A compressed air energy storage system comprising a subterranean gas storage chamber according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310083558.XA CN116006261A (en) | 2023-02-08 | 2023-02-08 | Underground gas storage chamber and compressed air energy storage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310083558.XA CN116006261A (en) | 2023-02-08 | 2023-02-08 | Underground gas storage chamber and compressed air energy storage system |
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| CN116006261A true CN116006261A (en) | 2023-04-25 |
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| CN202310083558.XA Pending CN116006261A (en) | 2023-02-08 | 2023-02-08 | Underground gas storage chamber and compressed air energy storage system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116398181A (en) * | 2023-06-08 | 2023-07-07 | 中国电建集团华东勘测设计研究院有限公司 | Wave-shaped lining structure suitable for high-pressure underground gas storage hole |
-
2023
- 2023-02-08 CN CN202310083558.XA patent/CN116006261A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116398181A (en) * | 2023-06-08 | 2023-07-07 | 中国电建集团华东勘测设计研究院有限公司 | Wave-shaped lining structure suitable for high-pressure underground gas storage hole |
| CN116398181B (en) * | 2023-06-08 | 2023-11-28 | 中国电建集团华东勘测设计研究院有限公司 | Wave-shaped lining structure suitable for high-pressure underground gas storage hole |
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