CN115992734A - Underground gas storage cave with drainage function and compressed air energy storage system - Google Patents
Underground gas storage cave with drainage function and compressed air energy storage system Download PDFInfo
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- CN115992734A CN115992734A CN202310083559.4A CN202310083559A CN115992734A CN 115992734 A CN115992734 A CN 115992734A CN 202310083559 A CN202310083559 A CN 202310083559A CN 115992734 A CN115992734 A CN 115992734A
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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
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Abstract
The invention discloses an underground gas storage cave with drainage and a compressed air energy storage system, and relates to the technical field of underground gas storage of compressed air energy storage. The underground gas storage chamber with the drainage function comprises a gas storage chamber, a choke plug and a drainage system; the gas storage chamber comprises an inner liner layer and a concrete layer; the choke plug comprises a first fixed end and a second fixed end, wherein the first fixed end and the second fixed end are made of porous materials and are fixedly connected with the concrete layer, and an inner cavity of the first fixed end and an inner cavity of the second fixed end are fixedly connected with the inner liner layer; the drainage system comprises a drainage transverse pipe and a drainage pump, wherein two ends of the drainage transverse pipe are connected between the first fixed end and the second fixed end, and the drainage pump is communicated with the drainage transverse pipe through a pump pipe. The underground gas storage chamber with the drainage solves the technical problems that surrounding rock water bodies of an underground gas storage system in the prior art easily enter the gas storage chamber from the outside and corrode the underground gas storage chamber.
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 cave with drainage 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 underground gas storage system needs to bear pressure, the rock layer with the arrangement depth of 20 meters below the underground is usually arranged, and the rock layer which surrounds the outer side of the underground gas storage system is called as surrounding rock. In some areas where the water supply is sufficient and in special weather conditions, the water content of the surrounding rock is high, and the water may also contain acidic corrosive substances. The underground gas storage system for storing energy by compressed air not only needs to bear pressure, but also needs to be frequently inflated and deflated to bear cyclic load, and most of side walls in the underground gas storage chamber contain steel, so that the water content of surrounding rock is too high, the underground gas storage chamber starts to be corroded from the outer wall of the underground gas storage chamber, the problem that surrounding rock water body permeates into the underground gas storage chamber is not found timely, the service life of the underground gas storage chamber is shortened, the gas storage pressure is limited and the like is caused, and the bottleneck is further caused in improving the efficiency of the compressed air energy storage system. Furthermore, the drainage conditions of underground reservoirs will directly affect the useful life.
Based on the above, how to efficiently and timely discharge the liquid such as surrounding rock water outside the underground gas storage chamber is a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide an underground gas storage system capable of efficiently and timely discharging underground water on the back surface of a steel lining.
In order to achieve the purpose, on one hand, a underground gas storage chamber with drainage is provided, which comprises: a gas storage chamber, a choke plug and a drainage system; the gas storage chamber comprises an inner liner layer and a concrete layer, and the concrete layer is arranged on the outer side of the inner liner layer; the choke plug comprises a first fixed end and a second fixed end, wherein the first fixed end and the second fixed end are made of porous materials and are fixedly connected with the concrete layer, and an inner cavity of the first fixed end and an inner cavity of the second fixed end are fixedly connected with the lining layer; the drainage system comprises a drainage transverse pipe and a drainage pump, wherein two ends of the drainage transverse pipe are connected between the first fixed end and the second fixed end, and the drainage pump is communicated with the drainage transverse pipe through a pump pipe.
Further, a plurality of the drainage transverse pipes are arranged in an annular mode; the water pump also comprises a water discharge ring pipe, wherein the water discharge ring pipe is communicated with all the water discharge transverse pipes, and the pump pipe is connected to the water discharge ring pipe.
Further, the whole gas storage chamber is arc-shaped, and the first fixing end and the second fixing end are respectively fixed at two ends of the gas storage chamber.
Further, the choke plug further comprises an air inlet and outlet pipeline, the air inlet and outlet pipeline comprises a first turnout, a second turnout and a third turnout which are communicated with each other, the first turnout is in sealing connection with the inner liner at the first fixed end, and the second turnout is in sealing connection with the inner liner at the second fixed end; the first and second branches are symmetrically arranged, and the third branch is arranged between the first and second branches in a crossing manner.
Further, the device also comprises a vertical shaft, wherein the lower end of the vertical shaft is communicated with the choke plug at the choke plug, and the upper end of the vertical shaft is led to the ground; the pump pipe and the third turnout are both positioned in the vertical shaft.
Further, a flowmeter is provided on the pump tube.
Further, the choke plug is arranged below the gas storage chamber.
Further, the inner liner layer is a circular steel pipe.
Further, the inside of the inner liner is coated with an anti-corrosive coating.
On the other hand, a compressed air energy storage system is provided, which comprises any underground gas storage cave with drainage.
The beneficial effects are that:
the underground gas storage cave with the drainage function comprises a choke plug, a gas storage cave chamber and a drainage system, wherein the gas storage cave chamber comprises an inner liner layer and a concrete layer, and the concrete layer is arranged on the outer side of the inner liner layer. The choke plug comprises a first fixed end and a second fixed end, wherein the first fixed end and the second fixed end are made of porous materials and are fixedly connected with a concrete layer, and an inner cavity of the first fixed end and an inner cavity of the second fixed end are fixedly connected with the inner liner. The drainage system comprises a drainage transverse pipe and a drainage pump, two ends of the drainage transverse pipe are connected between the first fixed end and the second fixed end of the choke plug, and the drainage pump is communicated with the drainage transverse pipe through a pump pipe.
The drainage system of this scheme's area drainage underground gas storage cave includes drainage violently pipe and drain pump, and the pipe joint is in the concrete layer in the drainage, provides the power of drainage through the drain pump, through setting up the water in the concrete layer in the inner liner outside of drainage system discharge gas storage cave, makes the water content of the concrete layer in the inner liner outside of gas storage cave keep in lower within range, releases the water pressure at the inner liner back of gas storage cave to guarantee the leakproofness and the elasticity of the inner liner of gas storage cave. Therefore, the underground gas storage cave with the drainage function can efficiently and timely drain the surrounding rock water and other liquids outside the underground gas storage cave, and further improve the pressure-bearing performance and the service life of the underground gas storage cave.
According to the compressed air energy storage system, due to the adoption of the underground gas storage chamber with the drainage function, daily maintenance work is lightened, the underground gas storage chamber is ensured to work in an optimal bearing range all the time, and the system efficiency of compressed air energy storage is improved. And based on the underground gas storage chamber with drainage, the compressed air energy storage system of the scheme can enlarge the capacity of the underground gas storage chamber, so that the energy storage capacity is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the underground gas storage chamber with drainage of the present invention;
FIG. 2 is a schematic diagram of the drainage system of the underground gas storage chamber with drainage of the present invention;
FIG. 3 isbase:Sub>A schematic cross-sectional view at A-A of FIG. 1;
fig. 4 is a schematic diagram of a cross section of a gas storage chamber.
In the figure: 100-a gas storage chamber; 110-an inner liner layer; 120 concrete layers; 130-left end of gas storage chamber; 140-the right end of the gas storage chamber; 200-choke plugs; 210-a first fixed end; 220-a second fixed end; 230-an air inlet and outlet pipeline; 231-a first fork; 232-a second fork; 233-third fork; 300-drainage system; 310-draining horizontal pipes; 320-a drainage pump; 330-pump tube; 340-a drain collar; 350-a flow meter; 400-shaft; 500-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. 1-4, the present embodiment provides an underground gas storage chamber with drainage, which includes a gas storage chamber 100, a bulkhead 200, and a drainage system 300. The gas storage chamber 100 includes an inner liner 110 and a concrete layer 120, and the concrete layer 120 is disposed outside the inner liner 110. The bulkhead 200 includes a first fixing end 210 and a second fixing end 220, both of which are made of porous materials and are fixedly connected with the concrete layer, and an inner cavity of the first fixing end and an inner cavity of the second fixing end are fixedly connected with the inner liner 110. The drainage system 300 comprises a drainage cross pipe 310 and a drainage pump 320, wherein two ends of the drainage cross pipe 310 are connected between the first fixing end 210 and the second fixing end 220 of the choke plug, the drainage cross pipe 310 is positioned between the other end of the first fixing end 210 and the other end of the second fixing end 220, the drainage cross pipe 310 is used for draining excessive surrounding rock water body at the concrete layer 120 of the gas storage chamber, the drainage pump 320 is communicated with the drainage cross pipe 310 through a pump pipe 330, and the drainage pump 320 is used for providing power for draining excessive surrounding rock water body at the concrete layer 120 of the gas storage chamber.
The underground gas storage chamber with drainage in this embodiment discharges water in the concrete layer outside the lining layer of the gas storage chamber through setting up drainage system, makes the water content of the concrete layer outside the lining layer of the gas storage chamber keep in lower within range, releases the water pressure at the lining layer back of gas storage chamber to guarantee the leakproofness and the elasticity of the lining layer of gas storage chamber. Therefore, the underground gas storage cave with the drainage function can efficiently and timely drain the surrounding rock water and other liquids outside the underground gas storage cave, and further improve the pressure-bearing performance and the service life of the underground gas storage cave.
Preferably, the first fixing end and the second fixing end are made of microporous materials, the microporous materials are made of porous materials, and further, the materials of the first fixing end and the second fixing end comprise concrete.
Preferably, the underground gas storage chamber with drainage in this embodiment is arc-shaped as a whole, and the first fixed end and the second fixed end of the choke plug are respectively fixed at two ends of the arc-shaped underground gas storage chamber with drainage. Or, the underground gas storage cave with drainage is provided with a plurality of groups, one group is fixed at the first fixed end of the choke plug, and the other group is fixed at the second fixed end of the choke plug, which are all within the protection scope of the application.
Further, the choke plug is arranged below the gas storage chamber, the choke plug is the lowest part of the underground gas storage chamber with drainage, and the arrangement of the choke plug below the gas storage chamber is beneficial to drainage by gravity, so that the drainage performance is further improved.
Further, as shown in fig. 2 and 3, the drainage system has a plurality of drainage cross pipes 310, the plurality of drainage cross pipes 310 are annularly arranged and further comprise a drainage collar 340, the drainage collar 340 is communicated with all the drainage cross pipes 310, and the pump pipe 330 is connected to the drainage collar 340.
Further, as shown in fig. 2, a flowmeter 350 is provided on the pump pipe for monitoring the drainage flow, and further monitoring the surrounding rock water condition.
Further, as shown in fig. 3, the bulkhead 200 further includes an air inlet and outlet pipe 230, the air inlet and outlet pipe includes a first turnout 231, a second turnout 232 and a third turnout 233, which are mutually communicated, the first turnout 231 is in sealing connection with the inner liner at the first fixed end 210, the second turnout 232 is in sealing connection with the inner liner at the second fixed end 220, the first turnout 231 and the second turnout 232 are symmetrically arranged, and the third turnout 233 is crossly arranged between the first turnout 231 and the second turnout 232.
Further, as shown in fig. 3, the vertical shaft 400 is further included, the lower end of the vertical shaft 400 is located at the bulkhead 200 and is communicated with the bulkhead 200, the upper end of the vertical shaft is open to the ground, and the pump pipe 330 and the third branch 233 are located in the vertical shaft 400.
Further, as shown in fig. 4, the lining layer 110 of the underground gas storage chamber with drainage is a circular steel pipe. Further, the inside of the inner liner 110 of the underground gas storage chamber with drainage is coated with an anti-corrosion coating for water prevention and corrosion prevention of the inside of the inner liner.
Embodiment two:
the embodiment provides a compressed air energy storage system, including any of the underground gas storage chambers with drainage in the first embodiment, due to the adoption of the underground gas storage chamber with drainage, daily maintenance work is reduced, the underground gas storage chamber with drainage is ensured to always work in an optimal bearing range, and further the system efficiency of compressed air energy storage is improved. And based on the underground gas storage cave with the drainage function, the compressed air energy storage system of the scheme can enlarge the capacity of the underground gas storage cave with the drainage function, so that the energy storage capacity is improved.
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 (10)
1. The utility model provides a take underground gas storage cave of drainage which characterized in that includes: a gas storage chamber, a choke plug and a drainage system;
the gas storage chamber comprises an inner liner layer and a concrete layer, and the concrete layer is arranged on the outer side of the inner liner layer; the choke plug comprises a first fixed end and a second fixed end, wherein the first fixed end and the second fixed end are made of porous materials and are fixedly connected with the concrete layer, and an inner cavity of the first fixed end and an inner cavity of the second fixed end are fixedly connected with the inner liner layer;
the drainage system comprises a drainage transverse pipe and a drainage pump, wherein two ends of the drainage transverse pipe are connected between the first fixed end and the second fixed end, and the drainage pump is communicated with the drainage transverse pipe through a pump pipe.
2. The underground gas storage chamber with drainage according to claim 1, wherein a plurality of the drainage cross pipes are annularly arranged; the water draining device further comprises a water draining ring pipe, wherein the water draining ring pipe is communicated with all the water draining transverse pipes, and the pump pipe is connected to the water draining ring pipe.
3. The underground gas storage chamber with drainage according to claim 1, wherein the whole gas storage chamber is arc-shaped, and the first fixing end and the second fixing end are respectively fixed at two ends of the gas storage chamber.
4. The underground gas storage chamber with water drainage according to claim 1, wherein the bulkhead further comprises a gas inlet and outlet pipeline, the gas inlet and outlet pipeline comprises a first turnout, a second turnout and a third turnout which are communicated with each other, the first turnout is in sealing connection with the inner liner at the first fixed end, and the second turnout is in sealing connection with the inner liner at the second fixed end; the first turnout and the second turnout are symmetrically arranged, and the third turnout is arranged between the first turnout and the second turnout in a crossing way.
5. The underground gas storage chamber with water drainage according to claim 4, further comprising a shaft, wherein the lower end of the shaft is positioned at the choke plug and is communicated with the choke plug, and the upper end of the shaft is communicated with the ground; the pump pipe and the third turnout are both positioned in the vertical shaft.
6. The underground gas storage chamber with drainage according to claim 1, wherein a flowmeter is arranged on the pump pipe.
7. A drainage underground gas storage chamber as claimed in claim 1 wherein said bulkhead is positioned below said chamber.
8. The underground gas storage chamber with drainage of claim 1, wherein the lining is a round steel pipe.
9. The drained underground gas storage chamber of claim 1, wherein the inner liner is coated with an anti-corrosive coating.
10. A compressed air energy storage system comprising the underground gas storage chamber with drainage of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310083559.4A CN115992734A (en) | 2023-02-08 | 2023-02-08 | Underground gas storage cave with drainage function and compressed air energy storage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310083559.4A CN115992734A (en) | 2023-02-08 | 2023-02-08 | Underground gas storage cave with drainage function and compressed air energy storage system |
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| CN115992734A true CN115992734A (en) | 2023-04-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116877911A (en) * | 2023-08-14 | 2023-10-13 | 中国矿业大学 | Large-deformation underground energy storage device |
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2023
- 2023-02-08 CN CN202310083559.4A patent/CN115992734A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116877911A (en) * | 2023-08-14 | 2023-10-13 | 中国矿业大学 | Large-deformation underground energy storage device |
| CN116877911B (en) * | 2023-08-14 | 2024-01-30 | 中国矿业大学 | Large-deformation underground energy storage device |
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