CN219976115U - Drainage structure, underground gas storage system and compressed air energy storage system - Google Patents
Drainage structure, underground gas storage system and compressed air energy storage system Download PDFInfo
- Publication number
- CN219976115U CN219976115U CN202320763911.4U CN202320763911U CN219976115U CN 219976115 U CN219976115 U CN 219976115U CN 202320763911 U CN202320763911 U CN 202320763911U CN 219976115 U CN219976115 U CN 219976115U
- Authority
- CN
- China
- Prior art keywords
- drainage
- gas storage
- storage system
- pipe
- underground
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 230000008901 benefit Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 25
- 230000006837 decompression Effects 0.000 description 5
- 230000005484 gravity Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a drainage structure, an underground gas storage system and a compressed air energy storage system, and relates to the technical field of gas storage systems. The drainage structure is used for underground gas storage cave and comprises a drainage vertical pipe, a drainage transverse pipe, a drainage guide pipe, a liquid level sensor and a pressure reducing element; the drainage vertical pipe is connected to the bottommost end of the underground gas storage cave, the liquid level sensor is arranged on the drainage horizontal pipe, and the pressure reducing element is arranged on the drainage guide pipe; the liquid level sensor controls the opening and closing of the pressure reducing element. The underground gas storage system comprises a gas storage cave which comprises the drainage structure, and further comprises a gas inlet and outlet pipeline which is positioned in the vertical shaft. The drainage system solves the technical problem that the existing gas storage system has to be stopped when draining, and has the advantages of simple structure, good safety and high reliability.
Description
Technical Field
The utility model relates to the technical field of gas storage systems, in particular to a drainage structure 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 mountain areas or underground rock stratum areas.
In the process of implementing the present utility model, the inventor finds that at least the following problems exist in the prior art:
the gas storage system usually adopts a tank body, and the air in the gas storage system is in a form of medium-high pressure gas or gas-liquid mixture. Therefore, excessive water is generated in the gas storage system, and the higher the gas storage pressure is, the more easily water is precipitated. As the system runs longer, a great amount of water can accumulate in the tank of the gas storage system. Meanwhile, the air storage tank of the compressed air energy storage system needs to be continuously inflated and deflated, and the air storage tank is subjected to cyclic load. The inner layer material of the air storage tank usually comprises metal materials such as steel, and if the water in the air storage tank is not removed in time, the tank wall is easy to corrode under the working condition, so that the service life of the air storage tank is shortened. The existing other similar tank drainage structures are generally suitable for overground gas storage and can only work under the working condition that the system is not operated. However, underground gas storage systems have problems with difficult maintenance. In addition, for the compressed air energy storage system, the system stops storing air without running, the running time of the compressed air energy storage system is seriously influenced, and large-scale and long-time energy storage is difficult to realize.
Based on this, how to provide a drainage structure, which has simple structure, good safety and high reliability, and can be applied to a compressed air energy storage system running on a large scale for a long time, is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims to provide a drainage structure with simple structure, good safety and high reliability, so that the drainage structure can be applied to a compressed air energy storage system which operates in a large scale for a long time.
In order to achieve the purpose, on one hand, a drainage structure is provided and used for underground gas storage cave, and comprises a drainage vertical pipe, a drainage horizontal pipe, a drainage guide pipe, a liquid level sensor and a decompression element; the drainage vertical pipe, the drainage transverse pipe and the drainage guide pipe are mutually communicated, the drainage vertical pipe is connected to the bottommost end of the underground gas storage cave, the liquid level sensor is arranged on the drainage transverse pipe, and the pressure reducing element is arranged on the drainage guide pipe; the liquid level sensor controls the opening and closing of the pressure reducing element.
Further, the drainage guide pipe comprises an underground section and a ground section; the pressure relief element is disposed at the ground section.
Further, the pressure reducing element is a first pressure reducing valve.
Further, a safety element is included, in series with the pressure relief element.
Further, the safety element is a second pressure relief valve.
On the other hand, the underground gas storage system comprises a gas storage cave, wherein the gas storage cave comprises any one of the drainage structures, the gas storage cave further comprises a gas inlet pipeline and a gas outlet pipeline, and the gas inlet pipeline and the gas outlet pipeline are positioned in a vertical shaft.
Further, the vertical shaft type drainage device further comprises a drainage roadway, the drainage roadway is communicated with the vertical shaft, the drainage vertical pipe and the drainage transverse pipe are located in the drainage roadway, one part of the drainage guide pipe is located in the drainage roadway, and the other part of the drainage guide pipe penetrates through the vertical shaft.
Further, the gas storage cavern is more than two groups, and a plurality of groups of drainage transverse pipes of the gas storage cavern are communicated with one group of underground sections through a multi-way joint.
Further, the gas storage chamber is in one or more forms of a barrel body, a well-shaped body, a strip-shaped body and an annular body.
In yet another aspect, there is provided a compressed air energy storage system comprising an underground gas storage system as described in any one of the preceding claims.
The utility model has the beneficial effects that:
the drainage structure of this scheme is used for underground gas storage cave, including drainage standpipe, drainage violently manage, drainage guide tube, level sensor and decompression element. The drainage vertical pipe, the drainage transverse pipe and the drainage guide pipe are mutually communicated, the drainage vertical pipe is connected to the bottommost end of the underground gas storage cave, the liquid level sensor is arranged on the drainage transverse pipe, the pressure reducing element is arranged on the drainage guide pipe, the liquid level sensor is electrically connected with the pressure reducing element, and the opening and closing of the pressure reducing element are controlled.
According to the scheme, the drainage vertical pipe is arranged at the bottommost end of the underground gas storage cave, when water exists in the underground gas storage cave, the water can flow into the drainage transverse pipe through the drainage vertical pipe under the action of gravity, the liquid level sensor is arranged on the drainage transverse pipe and is electrically connected with the pressure reducing element, when the water of the drainage transverse pipe exceeds the threshold value of the liquid level sensor, the pressure reducing element is started by the liquid level sensor, and the pressure in the underground gas storage cave is necessarily greater than the ground atmospheric pressure, so that after the pressure reducing element is started, the water in the drainage vertical pipe and the drainage transverse pipe is discharged through the drainage guide pipe. Therefore, the drainage system of the scheme can drain water in real time, does not need to stop gas storage during drainage, and has the advantages of simple structure, good safety and high reliability.
The underground gas storage system of this scheme includes the gas storage cave, the gas storage cave includes foretell drainage structures, and the gas storage cave still includes the inlet and outlet pipeline, and the inlet and outlet pipeline is located the shaft. The drainage structure is used for daily drainage of the gas storage cave. In addition, when the gas storage cave needs to be purged, the gas storage cave is fed with air through the air inlet and outlet pipeline, and the decompression element is started, so that the gas storage cave can be purged.
The compressed air energy storage system of this scheme includes foretell underground gas storage system, and underground gas storage system includes drainage system, and drainage system has simple structure, security good, the advantage that the reliability is high, consequently, the compressed air energy storage system of this scheme can realize on a large scale, long-time continuous safe and stable operation.
Drawings
FIG. 1 is an underground gas storage system with a drainage structure of the present utility model;
FIG. 2 is a further underground gas storage system with drainage structures of the present utility model;
FIG. 3 is another underground gas storage system with drainage structures of the present utility model;
FIG. 4 is a schematic illustration of yet another underground gas storage system with drainage structures of the present utility model.
In the figure: 110-a drain standpipe; 120-draining horizontal pipes; 121-a multi-way joint; 130-drainage guide pipe; 131-ground section; 132—an underground section; 200-a liquid level sensor; 310-a pressure relief element; 320-a security element; 410-gas storage cave; 420-an air inlet and outlet pipeline; 430-vertical shaft; 440-drainage roadway.
Detailed Description
In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, 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 utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, 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 a drainage structure for an underground gas storage chamber, which comprises a drainage standpipe 110, a drainage horizontal pipe 120, a drainage guide pipe 130, a liquid level sensor 200 and a pressure reducing element 310, wherein the drainage standpipe 110, the drainage horizontal pipe 120 and the drainage guide pipe 130 are mutually communicated, the drainage standpipe 110 is grounded at the bottommost end of the underground gas storage chamber, the liquid level sensor 200 is arranged on the drainage horizontal pipe, and the pressure reducing element 310 is arranged on the drainage guide pipe; the liquid level sensor 200 controls the opening and closing of the pressure reducing element 310.
In the drainage process of this embodiment, since the drainage standpipe 110 is located at the bottommost end of the underground gas storage chamber, when water exists in the gas storage chamber, the water flows into the drainage cross pipe 120 through the drainage standpipe 110 under the action of gravity, and since the drainage cross pipe 120 is provided with the liquid level sensor 200, the liquid level sensor 200 is electrically connected with the pressure reducing element 310, when the water in the drainage cross pipe 120 exceeds the threshold value of the liquid level sensor 200, the liquid level sensor 200 will open the pressure reducing element 310, and since the pressure in the underground gas storage chamber is necessarily greater than the ground atmospheric pressure, after the pressure reducing element 310 is opened, the water in the drainage standpipe 110 and the drainage cross pipe 120 is drained through the drainage guide pipe 130. Therefore, the drainage system of the embodiment can drain water in real time, and air storage is not required to be stopped during drainage, so that the drainage system has the advantages of simple structure, good safety and high reliability.
It should be noted that, the drainage standpipe 110 of this embodiment is used for guiding out water in the underground gas storage chamber, so long as the pipes capable of guiding out water in the gas storage chamber are all drainage standpipe 110 of this embodiment, that is, the angle between the drainage standpipe and the gas storage chamber is not limited, and only the water in the drainage standpipe has a downward gravity component. The horizontal drain pipe 120 serves to hold water at a relatively stationary height so that the water level sensor 200 detects the amount of water discharged, and thus a pipe which can temporarily stabilize the water level is the horizontal drain pipe 120 of the present embodiment. Since the drainage guide 130 of the present embodiment is used to guide the inside of the drainage stack 110 and the drainage cross pipe 120 to the ground, the drainage guide 130 is any pipe that communicates with the drainage stack 110 and the drainage cross pipe 120 and is capable of guiding water therein.
Further, a reinforcing structure and a sealing structure are arranged at the joint of the drainage standpipe 110 and the underground gas storage chamber, the reinforcing structure comprises reinforcing ribs, and the sealing structure comprises a waterproof and leakage-proof structure.
Further, the drainage guide 130 includes a subsurface section 132 and a ground section 131; the decompression element 310 is arranged on the ground section 131, and the ground section 131 is used for guiding water of the underground gas storage cave to the ground, so that the overhaul is convenient. Particularly in a compressed air energy storage system, the expansion and compression equipment of the system is arranged in a ground plant, and the drainage structure can be integrated into the plant for unified management through the ground section 131, and is collected or discharged at fixed points.
Further, the pressure reducing element 310 is a first pressure reducing valve. The pressure reducing valve has simple structure and low cost, and is convenient to replace after being damaged.
Further, a safety element 320 is included, the safety element 320 being in series with the pressure relief element 310. Further, the safety element is a second pressure relief valve. The safety element 320 is used to ensure proper operation of the drainage system after the pressure relief element 310 has been damaged, and the safety element 320 is connected in series with the pressure relief element 310. The safety element 320 may operate independently or may be opened and closed by the liquid level sensor 200. When the safety element 320 is independently operated, the safety element 320 may be in a normally open state, and when the pressure reducing element 310 is damaged, water may be discharged through the safety element 320. When the safety element 320 is controlled to be opened and closed by the liquid level sensor 200, the opening and closing of the safety element 320 and the pressure reducing element 310 can be simultaneously controlled by the liquid level sensor 200, so that the safety element 320 or the pressure reducing element 310 is prevented from being damaged.
It should be noted that, the drainage structure provided in this embodiment is used in an underground gas storage cave, where the underground gas storage cave refers to a gas storage cave located under the ground, that is, if a mountain peak with proper geological conditions is encountered, the underground gas storage cave disposed under the ground of the peak still belongs to the underground gas storage cave, and is also within the protection scope of the present utility model.
Embodiment two:
the embodiment provides an underground gas storage system, which comprises a gas storage chamber 410, wherein the gas storage chamber 410 comprises any one of the drainage structures in the first embodiment, the gas storage chamber 410 further comprises a gas inlet and outlet pipeline 420, and the gas inlet and outlet pipeline 420 is positioned in a vertical shaft 430. The gas inlet and outlet pipe 420 is used to charge or discharge gas from the gas storage chamber 410.
Further, a drainage roadway 440 is further included, the drainage roadway 440 is communicated with the vertical shaft 430, the drainage standpipe 110 and the drainage cross pipe 120 are located in the drainage roadway 440, one part of the drainage guide pipe 130 is located in the drainage roadway 440, and the other part of the drainage guide pipe 130 penetrates through the vertical shaft 430. Preferably, the underground section 132 of the drainage guide 130 extends through the shaft 430.
Further, as shown in fig. 4, more than two sets of gas storage chambers 410 are provided, and the drainage cross pipes 120 of the sets of gas storage chambers 410 are communicated with the underground sections 132 of one set of drainage guide pipes through the multi-way connectors 121. When the number of the gas storage chambers 410 is more than two, the drainage guide pipes 130 of all the gas storage chambers 410 can be shared, and the drainage transverse pipe 120 of each gas storage chamber 410 is communicated with the underground section 132 of one group of drainage guide pipes 130 through the multi-way joint 121. Those skilled in the art will appreciate that if there are N reservoirs 410 to be drained, an n+1 manifold joint, i.e., manifold joint 121, is used.
Further, the gas storage chamber 410 is one or more forms of a barrel body, a well-shaped body, a strip-shaped body and an annular body. Fig. 1 shows a longitudinal section of a gas storage chamber 410 of an annular body, fig. 2 shows a longitudinal section of a gas storage chamber 410 of a bar-shaped body, and fig. 3 shows a longitudinal section of a gas storage chamber 410 of a tub body.
The underground gas storage system of the embodiment comprises a gas storage cave which comprises the drainage structure, and further comprises a gas inlet and outlet pipeline which is positioned in the vertical shaft. The drainage structure is used for daily drainage of the gas storage cave. In addition, when the gas storage cave needs to be purged, the gas storage cave is fed with air through the air inlet and outlet pipeline, and the decompression element is started, so that the gas storage cave can be purged.
Embodiment III:
the embodiment provides a compressed air energy storage system, which comprises any one of the underground gas storage systems in the second embodiment. Typically, the compressed air energy storage system further comprises a compression system, an expansion system, a power generation system and a pipeline system, all of which are arranged in the plant.
The compressed air energy storage system of the embodiment comprises the underground air storage system, the underground air storage system comprises the drainage system, the drainage system can drain water in real time, and the compressed air energy storage system has the advantages of being simple in structure, good in safety and high in reliability, and therefore the compressed air energy storage system of the embodiment can realize large-scale continuous safe and stable operation for a long time.
It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. 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 utility model are desired to be protected by the following claims.
Claims (10)
1. The drainage structure is characterized by comprising a drainage vertical pipe, a drainage transverse pipe, a drainage guide pipe, a liquid level sensor and a pressure reducing element;
the drainage vertical pipe, the drainage transverse pipe and the drainage guide pipe are mutually communicated, the drainage vertical pipe is connected to the bottommost end of the underground gas storage cave, the liquid level sensor is arranged on the drainage transverse pipe, and the pressure reducing element is arranged on the drainage guide pipe; the liquid level sensor controls the opening and closing of the pressure reducing element.
2. The drainage structure of claim 1 wherein the drainage guide comprises a subterranean section and a ground section; the pressure relief element is disposed at the ground section.
3. The drain structure of claim 1, wherein the relief element is a first relief valve.
4. The drain structure of claim 1, further comprising a safety element in series with the pressure relief element.
5. The drain structure of claim 4, wherein the safety element is a second pressure relief valve.
6. An underground gas storage system, comprising a gas storage chamber, wherein the gas storage chamber comprises the drainage structure of any one of claims 1-5, and further comprises a gas inlet and outlet pipeline, wherein the gas inlet and outlet pipeline is positioned in a vertical shaft.
7. The underground gas storage system of claim 6, further comprising a drainage tunnel in communication with the shaft, the drainage standpipe and drainage cross tube being located in the drainage tunnel, a portion of the drainage guide tube being located in the drainage tunnel, another portion of the drainage guide tube extending through the shaft.
8. The underground gas storage system as recited in claim 6 wherein the plurality of sets of gas storage caverns are more than two sets of drainage cross pipes connected to one set of underground sections through a multi-way joint.
9. The underground gas storage system of claim 6, wherein the gas storage chamber is in the form of one or more of a barrel, a well, a bar, and a ring.
10. A compressed air energy storage system comprising the underground gas storage system of any one of claims 6-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320763911.4U CN219976115U (en) | 2023-04-07 | 2023-04-07 | Drainage structure, underground gas storage system and compressed air energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320763911.4U CN219976115U (en) | 2023-04-07 | 2023-04-07 | Drainage structure, underground gas storage system and compressed air energy storage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219976115U true CN219976115U (en) | 2023-11-07 |
Family
ID=88583892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320763911.4U Active CN219976115U (en) | 2023-04-07 | 2023-04-07 | Drainage structure, underground gas storage system and compressed air energy storage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219976115U (en) |
-
2023
- 2023-04-07 CN CN202320763911.4U patent/CN219976115U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108571415A (en) | A kind of high pressure thermal insulation gas storage water pumping compressed air energy-storage | |
| CN202064905U (en) | Gas lifting and liquid discharging device for vehicle natural gas compressor | |
| CN102606842B (en) | Protecting device for forward water hammer | |
| CN112065633B (en) | Underground pumped storage system and method with abandoned mine as energy storage container | |
| CN219976115U (en) | Drainage structure, underground gas storage system and compressed air energy storage system | |
| CN101294499B (en) | Double-function vacuum apparatus for extracting mash gas and lifting groundwater for coal mine safety | |
| CN111119985B (en) | Automatic drainage hole collapse preventing device and method for downward drilling | |
| CN206754793U (en) | A kind of double film gas holder caissons | |
| CN105040648A (en) | Reservoir emptying tunnel for over 200-meter ultrahigh dam and arrangement method and application thereof | |
| CN202441640U (en) | Pump station air inlet/outlet valve type self-sealing water tank filling equipment | |
| CN209875140U (en) | Casing gas removing device for oil field production | |
| CN115992734A (en) | Underground gas storage cave with drainage function and compressed air energy storage system | |
| CN108979280B (en) | Close hole Mine Roadway storage tank farm, oil storage method and construction method | |
| CN116085174A (en) | Pumped storage power station | |
| CN201152276Y (en) | Negative-pressure water storage tank type centrifugal pump | |
| US11835023B2 (en) | Hydrostatically compensated caes system having an elevated compensation liquid reservoir | |
| CN209368949U (en) | Protecting water hammer device suitable for large-scale buried long distance water transfer pumping plant | |
| CN114908718A (en) | Water-storage power station lower water reservoir arrangement structure utilizing existing reservoir | |
| CN111502893B (en) | Power generation system for maintaining constant pressure by using high-density medium | |
| CN212003288U (en) | Power generation system capable of maintaining constant pressure based on high-density medium | |
| CN209722910U (en) | A kind of device of temporary plugging diversion tunnel barrel gate pit shaft | |
| CN202484515U (en) | Protective device for forward water hammer | |
| CN109853495A (en) | A kind of method and device of temporary plugging diversion tunnel barrel gate pit shaft | |
| CN214063048U (en) | Underground high-pressure gas storage cavern group | |
| CN219750689U (en) | Temporary oil tank for expansion of accident oil pool of transformer substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |