CN115450585A - Sediment type salt cavern compressed air energy storage method, monitoring method and energy storage system - Google Patents

Sediment type salt cavern compressed air energy storage method, monitoring method and energy storage system Download PDF

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Publication number
CN115450585A
CN115450585A CN202211104061.3A CN202211104061A CN115450585A CN 115450585 A CN115450585 A CN 115450585A CN 202211104061 A CN202211104061 A CN 202211104061A CN 115450585 A CN115450585 A CN 115450585A
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gas
brine
energy storage
salt cavern
pipe
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Inventor
尉欣星
施锡林
李银平
马洪岭
李朋
杨春和
白炜政
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Wuhan Institute of Rock and Soil Mechanics of CAS
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Wuhan Institute of Rock and Soil Mechanics of CAS
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Priority to CN202211104061.3A priority Critical patent/CN115450585A/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/02—Equipment or details not covered by groups E21B15/00 - E21B40/00 in situ inhibition of corrosion in boreholes or wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/06—Measuring temperature or pressure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/06—Measuring temperature or pressure
    • E21B47/07—Temperature
    • 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 application relates to the technical field of salt pit sediment gas storage, and discloses a sediment type salt pit compressed air energy storage method, a monitoring method and an energy storage system. The energy storage method comprises the following steps: gas is input into the salt cavern through the injection and production gas pipe, and the gas is compressed for energy storage, so that the contact surface of the brine and the gas is continuously reduced; when the contact surface of the brine and the gas is reduced to a set value, stopping inputting the gas; and pressure monitors are respectively arranged at the bottom of the brine injection and discharge pipe, the top of the gas injection pipe and the top of the brine injection and discharge pipe, and the tightness and the gas-liquid interface position of the salt cavern are analyzed through the pressure monitors. And a set amount of protective oil is injected into the brine injecting and discharging pipe to prevent the salt caverns from being damaged by negative pressure generated in the salt caverns and achieve the effect of detecting a gas-liquid interface. The invention solves the detection problem of the sealing performance of the gas-liquid interface and the cavity of the sediment type salt cavern compressed air energy storage, not only can dynamically measure the position of the gas-liquid interface according to pressure monitoring data, but also can prevent the salt cavity from being damaged by negative pressure generated in the cavity by injecting protective oil.

Description

Sediment type salt cavern compressed air energy storage method, monitoring method and energy storage system
Technical Field
The application relates to the technical field of salt cavern sediment gas storage, in particular to a sediment type salt cavern compressed air energy storage method, a monitoring method and an energy storage system.
Background
The principle of the salt cavern compressed air energy storage is that electric energy is converted into chemical energy in the electricity utilization valley period, high-pressure gas is injected into the salt cavern through an air compressor, and compression heat is stored. During the electricity utilization peak period, salt cavern high-pressure gas is released and heated by stored compression heat, and then a motor is driven to convert electric energy. The compressed air energy storage technology has been operated in the countries such as the United states, germany and the like as a pollution-free energy storage mode in the whole process, becomes increasingly important under the guidance of the domestic double-carbon target, and is implemented in Jiangsu Jintan and Shandong Taian.
However, in China, salt rock stratum insoluble impurities are more, so that a large amount of sediments can be formed after the salt cavern reservoir is built and accumulated to the bottom of the salt cavern, and therefore, the sediment is used for storing high-pressure air, and the future development trend of compressed air energy storage of the salt cavern in China is formed. Sediment type gas storage storehouse compressed air energy storage need carry out quantitative evaluation to the high-pressure gas's in the pit circumstances of keeping up to and gas quantity, also need detect the leakproofness of salt chamber, can grasp the leakproofness of cavity through the change condition of monitoring pressure. Meanwhile, in the process of storing, extracting and utilizing the high-pressure gas, the water vapor in the cavity can be taken out, so that the gas-halogen interface position in the cavity needs to be analyzed, and the running condition of the energy storage of the compressed air is safely monitored.
In addition, after the salt cavern for compressed air energy storage is subjected to repeated gas injection and production processes, the tightness of the salt cavity needs to be detected, and in conclusion, the gas-liquid interface position determination and the cavity tightness are used as important parameters for salt cavern gas compression energy storage operation safety monitoring.
The detection method of the sediment type reservoir on the gas-halogen interface of the compressed energy storage is different from the traditional detection method, and special attention needs to be paid to the detection of the salt cavern high-pressure gas. The application of salt cavern gas-pressure energy storage in a gas storage is that a communication device is adopted to test the depth of a gas-halogen interface as a method for measuring the gas-halogen interface of the gas storage, but the methods need to carry out corresponding underground or aboveground device arrangement in the measurement process, and for a sediment storage, the conventional testing instruments and methods cannot be implemented.
Disclosure of Invention
The application aims to provide a sediment type salt cavern compressed air energy storage method, a monitoring method and an energy storage system, which are used for preventing negative pressure from being generated in a salt cavern by injecting a set amount of protective oil into an injection and discharge bittern pipe, monitoring whether the salt cavern has potential safety hazards or not through first pressure data and second pressure data, and dynamically measuring the height of a contact surface of bittern and gas from the ground through the first pressure data and the second pressure data.
Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.
According to an aspect of the embodiment of the application, a sediment type salt cavern compressed air energy storage method is provided, the both ends of salt cavern communicate respectively and annotate the gas production pipe and annotate and arrange the bittern pipe, the salt cavern middle part is equipped with bittern, bittern cuts off annotate the gas production pipe with annotate and arrange the bittern pipe intercommunication, the energy storage method includes: inputting gas into the salt cavern through the injection and production gas pipe, and compressing the gas to store energy so as to enable the contact surface of the brine and the gas to continuously descend; when the contact surface of the brine and the gas is reduced to a set value, stopping inputting the gas; and injecting a set amount of protective oil into the brine injecting and discharging pipe to prevent the salt cavern from generating negative pressure.
In some embodiments, the set amount of shielding oil > the volume of the injection and drainage halogen tube.
In some embodiments, the protective oil is incompatible with the brine, and the protective oil has a lower density than the brine.
According to an aspect of the embodiments of the present application, there is provided a monitoring method for compressed air energy storage of a sediment type salt cavern, which is applied to the energy storage method, and the monitoring method includes: acquiring first pressure data of the bottom of the injection and discharge halogen pipe; acquiring second pressure data of the top of the gas injection and production pipe; monitoring the salt cavern according to the first pressure data and the second pressure data.
In some embodiments, the first pressure data comprises a first pressure value p at the bottom of the injection and drainage halogen pipe when no protective oil is injected 1 The second pressure data comprises a second pressure value p 2 In the monitoring of the salt cavern as a function of the first pressure data and the second pressure data, the monitoring method comprises: when the first pressure value p 1 Reaching a first predetermined threshold value, and/or said second pressure value p 2 When the salt cavern reaches a second preset threshold value, judging that potential safety hazards exist in the salt cavern; when the first pressure value p 1 Not reaching a first preset threshold value, and the second pressure value p 2 And when the salt cavern does not reach a second preset threshold value, judging that the salt cavern does not have potential safety hazards.
In some embodiments, when the salt cavern is free of safety hazards and when the contact surface of the brine with the gas is lowered to a set value, the monitoring method further comprises: acquiring brine density rho and gravity acceleration g; according to the second pressure value p 2 Calculating the first height h of the contact surface of the brine and the gas from the ground according to the brine density rho and the gravity acceleration g 1 。
In some embodiments, said second pressure value p is determined according to said second pressure value 2 Calculating the brine density rho and the gravity acceleration g, and calculating the first distance between the contact surface of the brine and the gas and the groundHeight h 1 In the above method, the first height h is calculated by the following formula 1 ：
Figure BDA0003840631700000031
In some embodiments, the first pressure data further comprises a third pressure value p of the bottom of the injection and drainage brine pipe when the protective oil is injected 3 When the salt cavern has no potential safety hazard and the set amount of protective oil is injected into the brine injecting and discharging pipe, the monitoring method further comprises the following steps: according to the first pressure value p 1 A third pressure value p 3 The brine density ρ and the first height h 1 And the gravity acceleration g, and calculating the second height h of the contact surface of the brine and the gas from the ground 2 。
In some embodiments, said first pressure value p is dependent on said first pressure value 1 A third pressure value p 3 The brine density ρ and the first height h 1 And g, calculating the second height h of the contact surface of the brine and the gas from the ground 2 In the above method, the second height h is calculated by the following formula 2 ：
Figure BDA0003840631700000032
According to an aspect of the embodiments of the present application, there is provided a sediment type salt cavern compressed air energy storage system, which adopts the energy storage method as described above, and the energy storage system includes: the first sensor is used for detecting first temperature data and first pressure data of the bottom of the injection and exhaust halogen pipe; the second sensor is used for detecting second temperature data and second pressure data of the top of the injection and production gas pipe; and the monitor is used for receiving the detection signals of the first sensor and the second sensor and displaying corresponding temperature and pressure according to the detection signals of the first sensor and the second sensor. .
By the technical scheme of this application above, compare with prior art, its beneficial effect that is showing lies in: through the protection oil of arranging the brine pipe injection setting amount to annotate, to prevent to produce the negative pressure in the salt cavern, whether there is the potential safety hazard in salt cavern through first pressure data and second pressure data monitoring, and realize through first pressure data and second pressure data that brine and gaseous contact surface are apart from the dynamic measurement of the height on ground, thereby realize the operation safety monitoring to salt cavern compressed air energy storage, provide important reference for the normal operating of salt cavern compressed air energy storage.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The above and other features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
FIG. 1 illustrates a flow diagram of an energy storage method according to an embodiment of the present application;
FIG. 2 shows a flow diagram of a monitoring method according to an embodiment of the present application;
fig. 3 shows a schematic structural diagram of a sediment type salt cavern compressed air energy storage system according to an embodiment of the application.
The reference numerals are illustrated below: 1. injecting and producing gas pipe; 2. injecting and discharging a halogen pipe; 3. settling dregs; 4. a communication channel; 5. the top of the salt cavern; 6. a third warm-pressing device; 7. a gas-halogen interface; 8. an injection and production air pipe valve; 9. a halogen injection and discharge pipe valve; 10. an oil-halogen interface; 11. a monitor; 12. a first warm-pressure device; 13. a second warm and pressure device.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
In order to make the present application better understood by those skilled in the art, the present application will be briefly described with reference to fig. 1 to 3.
According to some embodiments, as shown in fig. 1, the present application provides a sediment type salt cavern compressed air energy storage method, two ends of the salt cavern are respectively communicated with an injection gas production pipe 1 and an injection and discharge brine pipe 2, brine is provided in the middle of the salt cavern, the brine separates the communication between the injection gas production pipe 1 and the injection and discharge brine pipe 2, and the energy storage method includes:
step 101, inputting gas into the salt cavern through the gas injection and production pipe 1, and compressing the gas to store energy so as to enable the contact surface of the brine and the gas to continuously descend;
step 102, stopping inputting gas when the contact surface of the brine and the gas is reduced to a set value;
103, injecting a set amount of protective oil into the brine injecting and discharging pipe 2 to prevent the salt cavern from generating negative pressure.
Based on the above embodiment, in step 101, the gas injection and production pipe 1 and the brine injection and discharge pipe 2 are opened first, gas is input into the salt cavern through the gas injection and production pipe 1, and the gas pressure is increased continuously with the continuous input of the gas, so that the contact surface between the brine in the salt cavern and the gas is continuously reduced.
In step 102, after the gas input is stopped, the gas injection and production pipe 1 and the brine injection and drainage pipe 2 are closed, the pressure at the top of the gas injection and production pipe 1 and the pressure at the bottom of the brine injection and drainage pipe 2 when the oil is not injected can be measured, and the set values can be set according to actual requirements.
In step 103, the brine injection and discharge pipe 2 is opened, and a set amount of protective oil is injected into the brine injection and discharge pipe 2 to prevent negative pressure from being generated in the salt cavern. After the brine injecting and discharging pipe 2 is closed, the pressure at the bottom of the brine injecting and discharging pipe 2 during oil injection can be measured. Wherein the protective oil is incompatible with the brine and has a density lower than that of the brine.
Further, the set amount may be set according to actual demand, and in some embodiments, the set amount of protection oil > the volume of the injection and discharge halogen tube 2. Before a set amount of protective oil is injected into the halogen injecting and discharging pipe 2, the length H of the halogen injecting and discharging pipe 2 and the inner diameter D of the halogen injecting and discharging pipe 2 are obtained in advance, and the volume V of the halogen injecting and discharging pipe 2 is calculated. The set amount is determined according to the volume V of the halogen injecting and discharging pipe 2. Wherein, the volume V of the injection and discharge halogen tube 2 is calculated according to the length H of the injection and discharge halogen tube 2 and the inner diameter D of the injection and discharge halogen tube 2, and the volume V is calculated by adopting the following formula:
Figure BDA0003840631700000051
in order to ensure the safety of the energy storage method, the upper energy storage method is monitored, as shown in fig. 2, the application provides a monitoring method for energy storage of compressed air in sediment type salt caverns, which is applied to the energy storage method, and the monitoring method comprises the following steps:
step 201, acquiring first pressure data of the bottom of the injection and discharge halogen pipe 2;
step 202, acquiring second pressure data of the top of the gas injection and production pipe 1;
step 203, monitoring the salt cavern according to the first pressure data and the second pressure data.
Based on the above embodiment, first pressure data of the bottom of the injection and drainage bittern pipe 2 and second pressure data of the top of the injection and production air pipe 1 are obtained, and salt caverns are monitored according to the first pressure data of the bottom of the injection and drainage bittern pipe 2 and the second pressure data of the top of the injection and production air pipe 1.
According to some embodiments, the first pressure data comprises a first pressure value p of the bottom of the injection and drainage brine pipe 2 when no protective oil is injected 1 The second pressure data comprises a second pressure value p 2 In the monitoring of the salt cavern as a function of the first pressure data and the second pressure data, the monitoring method comprises:
when the first pressure value p 1 Reaching a first preset threshold value, and/or said second pressure value p 2 When the salt cavern reaches a second preset threshold value, judging that potential safety hazards exist in the salt cavern;
when the first pressure value p 1 Not reaching a first preset threshold value, and the second pressure value p 2 And when the salt cavern does not reach the second preset threshold value, judging that the salt cavern does not have potential safety hazard.
Based on the above embodiment, when the first pressure data and the second pressure data are obtained, the gas injection and production pipe 1 and the brine injection and discharge pipe 2 need to be closed, and when the first pressure value p is obtained 1 Reaching a first predetermined threshold value, and/or said second pressure value p 2 When the second preset threshold value is reached, the situation that the sealing performance fluctuates greatly is indicated, and potential safety hazards can occur.
When the first pressure value p 1 Not reaching a first preset threshold value, and the second pressure value p 2 And when the second preset threshold value is not reached, the sealing performance of the inner space of the salt cavern is good, and the safety problem is avoided.
According to some embodiments, when there is no safety hazard in the salt cavern and when the contact surface of the brine with the gas is lowered to the set value, the monitoring method further comprises:
acquiring brine density rho and gravity acceleration g;
according to the second pressure value p 2 Calculating the first height h of the contact surface of the brine and the gas from the ground according to the brine density rho and the gravity acceleration g 1 。
Based on the above embodiment, the first height h is calculated by the following formula 1 ：
Figure BDA0003840631700000061
According to some embodiments, the first pressure data further comprises a third pressure value p of the bottom of the injection and drainage brine pipe 2 when injecting protective oil 3 When the salt cavern has no potential safety hazard and the set amount of protective oil is injected into the injection and discharge halogen pipe 2, the monitoring method further comprises the following steps:
according to the first pressure value p 1 A third pressure value p 3 The brine density ρ and the first height h 1 And g, calculating the second height h of the contact surface of the brine and the gas from the ground 2 。
Based on the above embodiment, the second height h is calculated by the following formula 2 ：
Figure BDA0003840631700000071
According to other embodiments, the present application provides a sediment type salt cavern compressed air energy storage system, which stores compressed air energy by using the energy storage method as described above, and the energy storage system includes:
the first sensor is used for detecting first temperature data and first pressure data of the bottom of the injection and exhaust halogen pipe 2;
the second sensor is used for detecting second temperature data and second pressure data of the top of the injection and production gas pipe 1;
and the monitor 11 is used for receiving the detection signals of the first sensor and the second sensor and displaying corresponding temperature and pressure according to the detection signals of the first sensor and the second sensor.
Based on the above embodiment, as shown in fig. 3, the first sensor employs the first warm-pressing device 12 and the third warm-pressing device 6, and the first warm-pressing device 12 is used for detecting the first pressure value p at the bottom of the brine injecting and discharging pipe 2 when the protective oil is not injected 1 And a third temperature value p for detecting a third pressure value p at the bottom of the halogen injecting and discharging pipe 2 when the protective oil is injected 3 And a third temperature value, the second sensor adopts a second temperature and pressure device 13, the second temperature and pressure device 13 is used for detecting second temperature data and second pressure data of the top of the injection gas production pipe 1, the second temperature data comprises a second temperature value, and the second pressure data comprises a second pressure value p 2 . The monitor 11 is used for displaying the first pressure value p 1 A first temperature value and a second pressure value p 2 A second temperature value, a third pressure value p 3 And a third temperature value.
Furthermore, an injection and production air pipe valve 8 is arranged at the upper end of the injection and production air pipe 1, and an injection and discharge halogen pipe valve 9 is arranged at the upper end of the injection and discharge halogen pipe 2. When the gas is input into the gas injection and production pipe 1, the gas injection and production pipe valve 8 and the halogen injection and discharge pipe valve 9 are opened to inject gas and discharge halogen, and after the gas input is stopped, the gas injection and production pipe valve 8 and the halogen injection and discharge pipe valve 9 are closed. When protective oil is added, the valve 9 of the injection and discharge halogen pipe is opened.
The salt cavern, the injection and production gas pipe 1 and the injection and drainage brine pipe 2 form a U-shaped pipe, brine is arranged at the bottom of the U-shaped pipe, and the injection and production gas pipe 1 and the injection and drainage brine pipe 2 are isolated from being communicated.
Further, as shown in fig. 3, the salt cavern includes the sediment 3, the communication passage 4, and the salt cavern top 5. The communicated channel 4 is internally provided with brine, one side of the communicated channel 4 is provided with sediment 3, the upper end of the sediment 3 is a salt cavern top 5, the salt cavern is communicated with the injection gas production pipe 1 through the salt cavern top 5, and the other end of the communicated channel 4 is communicated with the injection and discharge brine pipe 2. Wherein, the interface of brine and gas is gas-brine interface 7, and after the protection oil is injected into the injection and discharge halogen pipe 2, the protection oil is incompatible with the brine to form oil-brine interface 10.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (10)

1. The utility model provides a sediment type salt cavern compressed air energy storage method, the both ends of salt cavern communicate respectively to have notes production pipe and notes row's bittern pipe, its characterized in that, salt cavern middle part is equipped with brine, brine cuts off notes production pipe with annotate row's bittern pipe intercommunication, the energy storage method includes:
gas is input into the salt cavern through the gas injection and production pipe, and the gas is compressed for energy storage, so that the contact surface of the brine and the gas is continuously reduced;
when the contact surface of the brine and the gas is reduced to a set value, stopping inputting the gas;
and injecting a set amount of protective oil into the brine injecting and discharging pipe to prevent the salt cavern from generating negative pressure.
2. The method of storing energy of claim 1, wherein the set amount of protection oil > the volume of the injection and discharge halogen tube.
3. The energy storage method of claim 1, wherein the protective oil is incompatible with the brine and has a lower density than the brine.
4. A monitoring method for compressed air energy storage of a sediment type salt cavern is applied to the energy storage method as claimed in any one of claims 1 to 3, and is characterized by comprising the following steps:
acquiring first pressure data of the bottom of the injection and discharge halogen pipe;
acquiring second pressure data of the top of the injection and production gas pipe;
monitoring the salt cavern according to the first pressure data and the second pressure data.
5. The monitoring method according to claim 4, wherein the first pressure data includes a first pressure value p of the bottom of the injection and exhaust halogen pipe when no protective oil is injected 1 The second pressure data comprises a second pressure value p 2 In the monitoring the salt cavern according to the first pressure data and the second pressure data, the monitoring method comprises:
when the first pressure value p 1 Reaching a first preset threshold value, and/or said second pressure value p 2 When the salt cavern reaches a second preset threshold value, judging that potential safety hazards exist in the salt cavern;
when the first pressure value p 1 Not reaching a first preset threshold value, and the second pressure value p 2 And when the salt cavern does not reach the second preset threshold value, judging that the salt cavern does not have potential safety hazard.
6. The method of claim 5, wherein when the salt cavern is safe and when the contact surface of the brine water with the gas is lowered to a set value, the method further comprises:
acquiring brine density rho and gravity acceleration g;
according to the second pressure value p 2 Calculating the first height h of the contact surface of the brine and the gas from the ground according to the brine density rho and the gravity acceleration g 1 。
7. Method for monitoring according to claim 6, characterized in that said second pressure value p is determined as a function of said second pressure value p 2 Calculating the first height h of the contact surface of the brine and the gas from the ground according to the brine density rho and the gravity acceleration g 1 In the above method, the first height is calculated by the following formulah 1 ：
Figure FDA0003840631690000021
8. The method of monitoring of claim 6, wherein the first pressure data further comprises a third pressure value p at the bottom of the injection and drainage halogen pipe when injecting protective oil 3 When the salt cavern has no potential safety hazard and a set amount of protective oil is injected into the injection and discharge halogen pipe, the monitoring method further comprises the following steps:
according to the first pressure value p 1 A third pressure value p 3 The brine density ρ and the first height h 1 And the gravity acceleration g, and calculating the second height h of the contact surface of the brine and the gas from the ground 2 。
9. Method for monitoring, in accordance with claim 8, characterized in that said first pressure value p is determined as a function of said first pressure value p 1 A third pressure value p 3 The brine density ρ, the first height h 1 And g, calculating the second height h of the contact surface of the brine and the gas from the ground 2 In the above method, the second height h is calculated by the following formula 2 ：
Figure FDA0003840631690000022
10. A sediment type salt cavern compressed air energy storage system, which adopts the energy storage method as claimed in any one of claims 1 to 3, and is characterized in that the energy storage system comprises:
the first sensor is used for detecting first temperature data and first pressure data of the bottom of the injection and exhaust halogen pipe;
the second sensor is used for detecting second temperature data and second pressure data of the top of the injection and production gas pipe;
and the monitor is used for receiving the detection signals of the first sensor and the second sensor and displaying corresponding temperature and pressure according to the detection signals of the first sensor and the second sensor.
CN202211104061.3A 2022-09-09 2022-09-09 Sediment type salt cavern compressed air energy storage method, monitoring method and energy storage system Pending CN115450585A (en)

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