Natural gas transmission system

Abstract

The application provides a natural gas conveying system, relates to the technical field of natural gas conveying, and can improve the conveying amount of natural gas. The system comprises: a compressor module for pressurizing natural gas and outputting the pressurized natural gas; a power supply module for generating electric energy and conveying the electric energy to an energy storage module; the energy storage module is used for storing electric energy and determining the electric energy to be conveyed to a cooling module based on the stored electric energy and environmental information; the cooling module is used for cooling the pressurized natural gas based on the electric energy of the target power and the soil temperature of the natural gas pipeline where the natural gas pipeline for conveying natural gas is buried, so that the cooled natural gas is obtained, and the difference between the temperature of the cooled natural gas and the soil temperature is less than a preset temperature threshold; and an output module for outputting the cooled natural gas; wherein the gas conveying amount of the natural gas is negatively correlated with the temperature of the conveyed natural gas.

Description

Natural gas transmission system Technical Field

[0001] This application relates to the field of natural gas transmission technology, and more particularly to a natural gas transmission system. Background Technology

[0002] With economic development and the huge demand for clean energy, the natural gas industry has entered a period of rapid development. However, as the transmission range increases, transmission efficiency is facing a severe challenge from pipeline friction. Currently, natural gas is usually pressurized before being transmitted through pipelines to improve transmission efficiency and maintain transmission power.

[0003] However, when natural gas is transported using the above method, the pipeline gas transmission capacity is still relatively low and cannot meet the transportation demand. Therefore, how to increase the pipeline gas transmission capacity has become an urgent technical problem to be solved. Summary of the Invention

[0004] This application provides a natural gas transmission system that can increase the gas transmission capacity of pipelines.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, this application provides a natural gas transmission system. The system includes: a compressor module for pressurizing natural gas and outputting the pressurized natural gas; a power supply module for generating electrical energy and transmitting it to an energy storage module; an energy storage module for storing electrical energy and, based on the stored electrical energy and environmental information, determining the amount of electrical energy to be transmitted to a cooling module at a target power; a cooling module for cooling the pressurized natural gas based on the target power of the electrical energy and the soil temperature, obtaining cooled natural gas, wherein the soil temperature is the soil temperature at the location of the buried natural gas pipeline, and the difference between the temperature of the cooled natural gas and the soil temperature is less than a preset temperature threshold; and an output module for outputting the cooled natural gas; wherein the gas transmission rate is negatively correlated with the temperature of the transmitted natural gas.

[0007] Based on the above technical solution, after the compressor module pressurizes the natural gas, it can output pressurized natural gas. Since the power supply module generates electrical energy and transmits it to the energy storage module, the energy storage module can adjust the electrical energy supplied to the cooling module based on the stored electrical energy and environmental information. Then, the cooling module can cool the pressurized natural gas based on the target power of the electrical energy and the soil temperature, obtaining cooled natural gas. The temperature difference between the cooled natural gas and the soil temperature is less than a preset temperature threshold. In this way, the operating power of the cooling module can be rationally controlled using electrical energy, which not only reduces the temperature but also reduces energy consumption. Then, the output module outputs the cooled natural gas. Since the natural gas transmission rate is negatively correlated with the temperature of the transmitted natural gas, the transmission rate of the cooled natural gas can be increased, thereby improving the transmission efficiency.

[0008] In one possible implementation, the environmental information includes at least one of the following: seasonal information, diurnal temperature, and soil temperature. The energy storage module is specifically used to determine the target power based on the power transmission adjustment strategy, stored electrical energy, and environmental information, wherein the environmental information indicates at least one of weather temperature, solar irradiance, and wind intensity.

[0009] In another possible implementation, the power delivery adjustment strategy includes at least one of the following: increasing the power delivered to the cooling module when the stored energy in the energy storage module is greater than a preset energy threshold; decreasing the power delivered to the cooling module when the stored energy in the energy storage module is less than or equal to a preset energy threshold; decreasing the power delivered to the cooling module when the ambient temperature is greater than a preset temperature threshold; increasing the power delivered to the cooling module when the ambient temperature is less than or equal to a preset temperature threshold; increasing the power delivered to the cooling module when the light intensity is greater than a preset light intensity threshold; decreasing the power delivered to the cooling module when the light intensity is less than or equal to a preset light intensity threshold; increasing the power delivered to the cooling module when the wind intensity is greater than a preset wind intensity threshold; and decreasing the power delivered to the cooling module when the wind intensity is less than or equal to a preset wind intensity threshold.

[0010] In another possible implementation, the cooling module includes an organic Rankine cycle module and a combined wet and dry air cooler cooling module. The organic Rankine cycle module is used to perform a first cooling of the pressurized natural gas, resulting in naturally aerated gas. The combined wet and dry air cooler cooling module is used to perform a second cooling of the naturally aerated gas based on the target power of electrical energy and the soil temperature, resulting in naturally aerated gas.

[0011] In another possible implementation, the compressor module is also used to output the waste heat gas generated during the natural gas pressurization process. The organic Rankine cycle module is specifically used to transfer heat from the waste heat gas to the organic working fluid in the evaporator, causing the waste heat gas to evaporate and produce high-temperature, high-pressure steam. This high-temperature, high-pressure steam is then fed into an expander for power generation, producing low-pressure steam. The low-pressure steam is then fed into a condenser for condensation, producing a liquid substance. Finally, the liquid substance is pumped back to the evaporator to perform the first cooling of the pressurized natural gas.

[0012] In another possible implementation, a combined dry and wet air-cooled cooling module is used, specifically for the dry air-cooled module to exchange heat with the natural gas after the first cooling by air, and the wet air-cooled module to cool the natural gas after the first cooling by absorbing heat through water evaporation.

[0013] In another possible implementation, the dry air-cooled module includes heat dissipation fins and ventilation equipment, while the wet air-cooled module includes a spray device, a water circulation system, and a demisting device.

[0014] In another possible implementation, the power supply module includes at least one of the following: a photovoltaic power generation module and a wind power generation module.

[0015] In another possible implementation, the gas transmission volume is negatively correlated with the gas transmission volume influencing factor, and the gas transmission volume influencing factor is positively correlated with the transmission temperature; the gas transmission volume influencing factor includes at least one of the following: hydraulic friction coefficient, gas compressibility factor, and average gas temperature in the pipeline.

[0016] In another possible implementation, the gas transmission volume and the gas transmission volume influencing factor satisfy the following formula:

[0017]

[0018] Where, q v P1 is the gas transmission volume, P2 is the starting pressure of the gas transmission pipeline, d is the inner diameter of the gas transmission pipeline, λ is the hydraulic friction coefficient, Z is the gas compressibility factor, ΔT is the average temperature of the gas in the pipeline, and L is the length of the gas transmission pipeline. Attached Figure Description

[0019] Figure 1 is a schematic diagram of a natural gas transmission system provided in an embodiment of this application;

[0020] Figure 2 is a schematic diagram of another natural gas transmission system provided in an embodiment of this application. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Furthermore, the terms "comprising" and "having," and any variations thereof, used in the description of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or modules is not limited to the steps or modules listed, but may optionally include other steps or modules not listed, or may optionally include other steps or modules inherent to such process, method, product, or device.

[0023] Furthermore, in the embodiments of this application, the words "exemplary" or "for example" are used to indicate that they are examples, illustrations, or descriptions. Any embodiment or design that is described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design options. Specifically, the use of the words "exemplary" or "for example" is intended to present concepts in a concrete manner.

[0024] In this embodiment of the application, the gas delivery volume is negatively correlated with the gas delivery volume influencing factor, and the gas delivery volume influencing factor is positively correlated with the delivery temperature; the gas delivery volume influencing factor includes at least one of the following: hydraulic friction coefficient, gas compressibility factor, and average gas temperature in the pipeline.

[0025] It should be understood that the gas transmission volume in this application refers to the volume of natural gas transported in the pipeline per unit time.

[0026] The following section describes the negative correlation between gas delivery volume and the gas delivery volume influencing factor, and the positive correlation between the gas delivery volume influencing factor and the delivery temperature.

[0027] In this embodiment of the application, the gas delivery volume and the gas delivery volume influence factor satisfy the following formula one.

[0028]

[0029] Where, q v Where P1 is the starting pressure of the gas pipeline, P2 is the ending pressure of the gas pipeline, d is the inner diameter of the gas pipeline, λ is the hydraulic friction coefficient, Z is the gas compressibility factor, ΔT is the average temperature of the gas in the pipeline, and L is the length of the gas pipeline.

[0030] It should be understood that, as can be seen from Formula 1 above, for existing pipelines, parameters such as pipe diameter, length, pressure, and the properties of the medium itself are relatively immutable, while the friction coefficient λ, average temperature ΔT, and compressibility factor Z are variable.

[0031] For the friction coefficient λ, the flow state of the gas pipeline is usually in the mixed friction zone, and the friction coefficient λ satisfies the following formula 2.

[0032]

[0033] Where K is the roughness of the inner wall of the gas pipeline, and Re is the Reynolds number. The Reynolds number Re satisfies the following formula three.

[0034]

[0035] Where μ is the gas viscosity and ρ is the gas density.

[0036] It is understandable that for a fixed pipeline, K / d is a constant, λ = f(Re), and λ decreases as Re increases. As the transport temperature decreases, the gas viscosity μ decreases, the Reynolds number Re increases, and λ decreases. Furthermore, the gas delivery rate q... v ∝λ -0.5 Therefore, as the transmission temperature decreases, the friction coefficient λ decreases, and the pipeline gas transmission rate qv increases.

[0037] For the compression factor Z, the compression factor Z satisfies the following formula four.

[0038]

[0039] Among them, T r For comparison, Tc is the critical temperature (constant), T Q For conveying temperature.

[0040] It should be understood that reducing the conveying temperature T Q This means lowering the contrast temperature Tr, which in turn lowers the compressibility factor Z. Because q v ∝Z -0.5 Therefore, decreasing Z will also lead to q v The increase in quantity achieves the effect of increasing the conveying capacity.

[0041] For the average temperature ΔT, the average temperature ΔT satisfies the following formula five.

[0042]

[0043] Where a is a constant and T0 is the soil temperature.

[0044] It should be understood that when the soil temperature T0 is constant, reducing the transport temperature T... Q When the average temperature ΔT decreases, while q v ∝T -0.5 Therefore, the conveying temperature decreases, the average temperature decreases, and the pipeline conveying capacity increases.

[0045] Among them, the soil temperature refers to the soil temperature at the location of the buried natural gas pipeline.

[0046] It should be understood that pipelines transporting natural gas are typically buried at a depth of 1-2 meters; therefore, the soil temperature is the temperature of the soil 1-2 meters below the surface.

[0047] In summary, when the conveying temperature T Q When the viscosity decreases: the gas viscosity μ decreases, the Reynolds number Re increases, and λ decreases; relative temperature T r A decrease in temperature leads to a decrease in the compressibility factor Z and a decrease in the average temperature ΔT. All of these changes increase the pipeline's transport capacity. The transport temperature directly affects the pipeline's gas transport capacity, and indirectly affects it by influencing gas properties (viscosity, compressibility factor, etc.), representing a multi-factor coupled effect.

[0048] As shown in Figure 1, a natural gas transmission system provided in an embodiment of this application is provided. The system includes: a compressor module 101, a power supply module 102, an energy storage module 103, a cooling module 104, and an output module 105.

[0049] The compressor module 101 is used to pressurize natural gas and output the pressurized natural gas.

[0050] It should be understood that pressurizing natural gas through a compressor module provides the power for its transmission, enabling pipelines to continuously deliver natural gas. However, the pressurization process causes the natural gas temperature to rise, which reduces the pipeline's delivery capacity.

[0051] The power supply module 102 is used to generate electrical energy and transmit the electrical energy to the energy storage module 103.

[0052] In this embodiment, the power supply module 102 may include at least one of the following: a photovoltaic power generation module and a wind power generation module. The photovoltaic power generation module is used to convert light energy into electrical energy, and the wind power generation module is used to convert wind energy into electrical energy.

[0053] For example, a photovoltaic power generation module includes: photovoltaic panels, an inverter, and a photovoltaic energy storage device. The panels absorb solar energy and convert it into electrical energy, the inverter converts the current, and the photovoltaic energy storage device balances power generation and consumption demands. A wind power generation module includes: a wind turbine, a generator, a power regulation device, and a wind energy storage device, etc. The wind turbine and generator convert wind energy into electrical energy, the power regulation device converts the current, and the wind energy storage device balances power generation and consumption demands.

[0054] Optionally, the power supply module 102 may also include grid power supply, which may include at least one of the following: power supply from new energy sources, or power supply from coal.

[0055] Energy storage module 103 is used to store electrical energy and, based on the stored electrical energy and environmental information, determines the amount of electrical energy to be delivered to the cooling module at a target power. The environmental information includes at least one of the following: seasonal information, day and night air temperature, and soil temperature.

[0056] Among them, the soil temperature refers to the soil temperature at the location of the buried natural gas pipeline.

[0057] It should be understood that pipelines transporting natural gas are typically buried at a depth of 1-2 meters; therefore, the soil temperature is the temperature of the soil 1-2 meters below the surface.

[0058] It should be understood that environmental information can determine the electrical energy that the power supply module can provide. Therefore, based on the provided electrical energy, the operating power of the cooling module 104 can be rationally controlled, which not only reduces the temperature of the natural gas to increase the transmission rate, but also allows the power supply module to provide electrical energy to the cooling module, thereby improving energy efficiency and reducing carbon emissions.

[0059] The cooling module 104 is used to cool the pressurized natural gas based on the target power of the electrical energy and the soil temperature to obtain cooled natural gas. The temperature difference between the cooled natural gas and the soil temperature is less than a preset temperature threshold.

[0060] It should be understood that the preset temperature threshold is not limited in the embodiments of this application. For example, the preset temperature threshold can be 1 degree, 5 degrees, or 10 degrees.

[0061] In this embodiment of the application, the temperature of the cooled natural gas is higher than or equal to the soil temperature.

[0062] It should be understood that if the temperature of the natural gas is lower than the soil temperature, it indicates that the cooling module is operating at excessive power, increasing energy consumption. Therefore, limiting the temperature of the cooled natural gas to be higher than or equal to the soil temperature can reduce energy consumption. Furthermore, the temperature of the natural gas during its transmission through pipelines is affected by the soil temperature. Therefore, if the natural gas temperature is lower than the soil temperature, it will rise during transmission due to the influence of the soil temperature. This would result in wasted energy consumed during cooling. Therefore, limiting the temperature of the cooled natural gas to be higher than or equal to the soil temperature can improve energy efficiency.

[0063] In one possible implementation, the cooling module 104 includes: an Organic Rankine Cycle (ORC) module and a wet-dry air-cooled unit cooling module. The Organic Rankine Cycle module is used to perform a first cooling of the pressurized natural gas, resulting in naturally aerated gas. The wet-dry air-cooled unit cooling module is used to perform a second cooling of the naturally aerated gas based on the target power of electrical energy and the soil temperature, resulting in naturally aerated gas.

[0064] In one possible implementation, the organic Rankine cycle module includes an evaporator, a condenser, an expander, and a working fluid pump. The evaporator is used for heat exchange between natural gas and the organic working fluid, the condenser is used for steam condensation, the expander is used for energy conversion and power generation, and the working fluid pump is used to maintain the cycle.

[0065] In this embodiment, the compressor module is also used to output the waste heat gas generated during the natural gas pressurization process. The organic Rankine cycle module is specifically used to transfer heat from the waste heat gas to the organic working fluid in the evaporator, causing the waste heat gas to evaporate and obtain high-temperature, high-pressure steam; after the high-temperature, high-pressure steam is fed into the expander for power generation, low-pressure steam is obtained; the low-pressure steam is fed into the condenser for condensation, obtaining a liquid substance; and the liquid substance is sent back to the evaporator via a working fluid pump to perform the first cooling of the pressurized natural gas.

[0066] In one possible implementation, the combined dry and wet air cooler cooling module includes: a dry air cooling module (including heat dissipation fins and ventilation equipment) and a wet air cooling module (including a spray device, a water circulation system and a demisting device).

[0067] The combined dry and wet air-cooled unit cooling module is used in the dry air-cooled module to dissipate heat from the natural gas after the first cooling cycle via air exchange, while the wet air-cooled module cools the natural gas after the first cooling cycle via water evaporation. The output module is used to output the cooled natural gas.

[0068] Based on the above technical solution, after the compressor module pressurizes the natural gas, it can output pressurized natural gas. Since the power supply module generates electrical energy and transmits it to the energy storage module, the energy storage module can adjust the electrical energy supplied to the cooling module based on the stored electrical energy and environmental information. Then, the cooling module can cool the pressurized natural gas based on the target power of the electrical energy and the soil temperature, obtaining cooled natural gas. The temperature difference between the cooled natural gas and the soil temperature is less than a preset temperature threshold. In this way, the operating power of the cooling module can be rationally controlled using electrical energy, which not only reduces the temperature but also reduces energy consumption. Then, the output module outputs the cooled natural gas. Since the natural gas transmission rate is negatively correlated with the temperature of the transmitted natural gas, the transmission rate of the cooled natural gas can be increased, thereby improving the transmission efficiency.

[0069] In some embodiments, the energy storage module 103 is specifically used to determine the target power based on the power transmission adjustment strategy, the stored electrical energy, and environmental information.

[0070] In this embodiment of the application, the environmental information includes at least one of the following: seasonal information, daytime and nighttime air temperature, and soil temperature. The environmental information is used to indicate at least one of the following: weather temperature, solar radiation intensity, and wind intensity.

[0071] It should be understood that sunlight intensity, weather temperature, and wind intensity vary with the seasons. Thus, seasonal information affects the electrical energy generated by the power supply module, which in turn affects the electrical energy provided to the cooling module. Furthermore, differences in day and night temperatures affect soil temperature, which in turn affects the required temperature reduction of the natural gas, necessitating adjustments to the cooling module's operating power by controlling the target power.

[0072] In this embodiment, the energy storage module 103 may include an electrical energy storage module and a dynamic temperature control module. The electrical energy storage module stores electrical energy, and the dynamic temperature control module determines the target power based on the power delivery adjustment strategy, the stored electrical energy, and environmental information.

[0073] In this embodiment, the power delivery adjustment strategy includes at least one of the following: increasing the power delivered to the cooling module when the stored energy in the energy storage module is greater than a preset energy threshold; decreasing the power delivered to the cooling module when the stored energy in the energy storage module is less than or equal to a preset energy threshold; decreasing the power delivered to the cooling module when the ambient temperature is greater than a preset temperature threshold; increasing the power delivered to the cooling module when the ambient temperature is less than or equal to a preset temperature threshold; increasing the power delivered to the cooling module when the light intensity is greater than a preset light intensity threshold; decreasing the power delivered to the cooling module when the light intensity is less than or equal to a preset light intensity threshold; increasing the power delivered to the cooling module when the wind intensity is greater than a preset wind intensity threshold; and decreasing the power delivered to the cooling module when the wind intensity is less than or equal to a preset wind intensity threshold.

[0074] It should be noted that the embodiments of this application do not limit the preset power threshold, preset temperature threshold, preset light intensity threshold, and preset wind intensity threshold.

[0075] Understandably, if the energy stored in the energy storage module exceeds a preset threshold, it indicates sufficient electrical energy. In this case, the power supplied to the cooling module can be increased to enhance its operating power and thus lower the natural gas transmission temperature. Conversely, if the energy stored in the energy storage module is less than or equal to the preset threshold, it indicates insufficient electrical energy. Therefore, the power supplied to the cooling module can be reduced to minimize energy consumption.

[0076] Understandably, if the ambient temperature is above the preset temperature threshold, it indicates that the soil temperature may be high. Therefore, the power supplied to the cooling module can be reduced to decrease its operating power. This reduces the cooling effect on the natural gas, preventing it from falling below the soil temperature. Conversely, if the ambient temperature is below or equal to the preset temperature threshold, it indicates that the soil temperature may be low. Therefore, the power supplied to the cooling module can be increased to increase its operating power. This increases the cooling effect on the natural gas, thereby increasing the natural gas transmission rate.

[0077] It should be understood that when the light intensity is greater than the preset light intensity threshold, it indicates that the generated electrical energy is sufficient, and the power supplied to the cooling module can be increased to improve the operating power of the cooling module, thereby reducing the transmission temperature of the natural gas. When the light intensity is less than or equal to the preset light intensity threshold, it indicates that the generated electrical energy is insufficient, and the power supplied to the cooling module can be reduced to decrease energy consumption.

[0078] It should be understood that when the wind intensity is greater than the preset wind intensity threshold, it indicates that the generated electrical energy is sufficient, and the power supplied to the cooling module can be increased to improve the module's operating power and thus reduce the natural gas transmission temperature. When the wind intensity is less than or equal to the preset wind intensity threshold, it indicates that the generated electrical energy is insufficient, and the power supplied to the cooling module can be reduced to decrease energy consumption.

[0079] In some embodiments, the power delivery adjustment strategy further includes: increasing the power delivered to the cooling module when the energy stored in the energy storage module is greater than a preset quantity threshold, the weather temperature is less than or equal to a preset temperature threshold, the light intensity is greater than a preset light intensity threshold, and the wind intensity is greater than a preset wind intensity threshold; and decreasing the power delivered to the cooling module when the energy stored in the energy storage module is less than or equal to a preset quantity threshold, the weather temperature is greater than a preset temperature threshold, the light intensity is less than or equal to a preset light intensity threshold, and the wind intensity is less than or equal to a preset wind intensity threshold.

[0080] The embodiments of this application are described below with specific examples. As shown in Figure 2, the compressor can pressurize natural gas to obtain pressurized natural gas, which is high-temperature natural gas. Then, the organic Rankine cycle module can perform a first cooling of the high-temperature natural gas. Afterwards, a dry-wet combined air-cooler cooling module can perform a second cooling. Finally, the output module can output the natural gas after the second cooling.

[0081] Simultaneously, waste heat gas is generated when the compressor pressurizes the natural gas. The organic Rankine cycle module can utilize this waste heat gas to generate electricity, which is then stored in the energy storage module. Furthermore, power supply modules (such as photovoltaic power generation modules, wind power generation modules, and grid power supply modules) can generate electricity and store it in the energy storage module. Then, the dynamic temperature control module can determine the electrical energy to be supplied to the cooling module of the combined wet and dry air cooler based on the electrical energy stored in the energy storage module and environmental information.

[0082] It should be understood that the systems disclosed in the embodiments provided in this application can be implemented in other ways. For example, the system embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between devices or units, and may be electrical, mechanical, or other forms.

[0083] The units described as separate components may or may not be physically separate. A component shown as a unit can be one or more physical units; that is, it can be located in one place or distributed in multiple different locations. Some or all of the classified units can be selected to achieve the purpose of this embodiment according to actual needs.

[0084] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0085] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solutions of the embodiments of this application, essentially, or the parts that contribute to the prior art, or all or part of the technical solutions, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the systems of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0086] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A natural gas transmission system, characterized in that, The system includes: a compressor module for pressurizing natural gas and outputting the pressurized natural gas; a power supply module for generating electrical energy and transmitting the electrical energy to an energy storage module; the energy storage module for storing the electrical energy and determining the target power of electrical energy to be delivered to the cooling module based on the stored electrical energy and environmental information; the environmental information includes at least one of the following: seasonal information, day and night air temperature, and soil temperature; the energy storage module is specifically used to determine the target power based on an electrical energy delivery adjustment strategy, the stored electrical energy, and the environmental information, wherein the environmental information indicates at least one of weather temperature, solar radiation intensity, and wind intensity; and a cooling module for cooling the pressurized natural gas based on the target power of the electrical energy and the soil temperature to obtain cooled natural gas, wherein the difference between the temperature of the cooled natural gas and the soil temperature is less than a preset temperature threshold; the soil temperature is the soil temperature at the location where the natural gas pipeline transporting the natural gas is buried; the cooling module includes: an organic Rankine cycle. The system comprises: a module for cooling the pressurized natural gas; an organic Rankine cycle module for first cooling the pressurized natural gas to obtain first-cooled natural gas; a compressor module for outputting waste heat gas generated during the pressurization of natural gas; the organic Rankine cycle module specifically for transferring heat from the waste heat gas to an organic working fluid in an evaporator, causing the waste heat gas to evaporate and obtain high-temperature, high-pressure steam; inputting the high-temperature, high-pressure steam into an expander for power generation to obtain low-pressure steam; inputting the low-pressure steam into a condenser for condensation to obtain a liquid object; and a working fluid pump returning the liquid object to the evaporator for first cooling of the pressurized natural gas; and an output module for outputting the cooled natural gas; wherein the gas delivery rate is negatively correlated with the temperature of the delivered natural gas.

2. The system according to claim 1, characterized in that, The power delivery adjustment strategy includes at least one of the following: increasing the power delivered to the cooling module when the power stored in the energy storage module is greater than a preset power threshold; decreasing the power delivered to the cooling module when the power stored in the energy storage module is less than or equal to the preset power threshold; decreasing the power delivered to the cooling module when the weather temperature is greater than a preset temperature threshold; and increasing the power delivered to the cooling module when the weather temperature is less than or equal to the preset temperature threshold. When the light intensity is greater than a preset light intensity threshold, the power supplied to the cooling module is increased; when the light intensity is less than or equal to the preset light intensity threshold, the power supplied to the cooling module is decreased; when the wind intensity is greater than a preset wind intensity threshold, the power supplied to the cooling module is increased; when the wind intensity is less than or equal to the preset wind intensity threshold, the power supplied to the cooling module is decreased.

3. The system according to claim 1, characterized in that, The combined dry and wet air cooler cooling module is specifically used for the dry air cooling module to exchange heat with the natural gas after the first cooling through air, and for the wet air cooling module to cool the natural gas after the first cooling through water evaporation and heat absorption.

4. The system according to claim 3, characterized in that, The dry air-cooled module includes heat dissipation fins and ventilation equipment, while the wet air-cooled module includes a spray device, a water circulation system, and a demisting device.

5. The system according to claim 1 or 2, characterized in that, The power supply module includes at least one of the following: a photovoltaic power generation module and a wind power generation module.

6. The system according to claim 1 or 2, characterized in that, The gas transmission volume is negatively correlated with the gas transmission volume influencing factor, and the gas transmission volume influencing factor is positively correlated with the transmission temperature; the gas transmission volume influencing factor includes at least one of the following: hydraulic friction coefficient, gas compressibility factor, and average gas temperature in the pipeline.

7. The system according to claim 6, characterized in that, The gas transmission volume and the gas transmission volume influencing factor satisfy the following formula: ; where q v Where P1 is the starting pressure of the gas pipeline, P2 is the ending pressure of the gas pipeline, d is the inner diameter of the gas pipeline, λ is the hydraulic friction coefficient, Z is the gas compressibility factor, ΔT is the average temperature of the gas in the pipeline, and L is the length of the gas pipeline.

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