Natural gas conveying system

Abstract

The invention 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 used for pressurizing natural gas and outputting the pressurized natural gas. The power supply module is used for generating electric energy and transmitting the electric energy to the energy storage module. And the energy storage module is used for storing the electric energy and determining to transmit the electric energy of the target power to the cooling module based on the stored electric energy and the environment information. And the cooling module is used for cooling the pressurized natural gas based on the electric energy of the target power and the soil temperature, the cooled natural gas is obtained, the soil temperature is the soil temperature at the position of the buried natural gas pipeline for conveying the natural gas, and the difference value between the temperature of the cooled natural gas and the soil temperature is smaller than a preset temperature threshold value. The output module is used for outputting the cooled natural gas; wherein the gas transmission amount of the natural gas is in negative correlation with the temperature of the transmitted natural gas.

Description

Technical Field

[0001] The present application relates to the technical field of natural gas transportation, and in particular to a natural gas transportation system. Background Art

[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 severe challenges from pipeline friction. Currently, natural gas is typically pressurized before being transported through pipelines to improve transmission efficiency and maintain power.

[0003] However, when natural gas is transported in this way, the pipeline gas transmission capacity is still low and cannot meet the transportation demand. Therefore, how to increase the pipeline gas transmission capacity has become a technical problem that needs to be solved urgently. Summary of the Invention

[0004] The present application provides a natural gas transmission system that can increase pipeline gas transmission capacity.

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

[0006] In a first aspect, the present 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 the electrical energy 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 target power of electrical energy to be transmitted to a cooling module; a cooling module for cooling the pressurized natural gas based on the target power of electrical energy and soil temperature to obtain cooled natural gas, wherein the soil temperature is the soil temperature at the location of a buried natural gas transmission 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 natural gas transmission volume 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 the 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. The cooling module then cools the pressurized natural gas based on the target power and the soil temperature, producing cooled natural gas. The difference between the temperature of the cooled natural gas and the soil temperature is less than a preset temperature threshold. This allows for the rational use of electrical energy to control the operating power of the cooling module, reducing both temperature and energy consumption. The output module then outputs the cooled natural gas. Since the natural gas delivery volume is negatively correlated with its temperature, the delivery volume of cooled natural gas can be increased, thereby improving delivery efficiency.

[0008] In one possible implementation, the environmental information includes at least one of the following: seasonal information, daytime and nighttime air temperature, and soil temperature. The energy storage module is specifically configured to determine a target power based on the power transmission adjustment strategy, the stored power, and the environmental information, where the environmental information indicates at least one of the following: weather temperature, solar radiation intensity, and wind intensity.

[0009] In another possible implementation, the power transmission adjustment strategy includes at least one of the following: when the power stored in the energy storage module is greater than a preset power threshold, increasing the power of power transmitted to the cooling module. When the power stored in the energy storage module is less than or equal to the preset power threshold, reducing the power of power transmitted to the cooling module. When the weather temperature is greater than a preset temperature threshold, reducing the power of power transmitted to the cooling module. When the weather temperature is less than or equal to the preset temperature threshold, increasing the power of power transmitted to the cooling module. When the light intensity is greater than a preset light intensity threshold, increasing the power of power transmitted to the cooling module. When the light intensity is less than or equal to the preset light intensity threshold, reducing the power of power transmitted to the cooling module. When the wind intensity is greater than a preset wind intensity threshold, increasing the power of power transmitted to the cooling module. When the wind intensity is less than or equal to the preset wind intensity threshold, reducing the power of power transmitted to the cooling module.

[0010] In another possible implementation, the cooling module includes an organic Rankine cycle module and a dry-wet combined air cooler cooling module. The organic Rankine cycle module is configured to perform a primary cooling on the pressurized natural gas to obtain primary cooled natural gas. The dry-wet combined air cooler cooling module is configured to perform a secondary cooling on the primary cooled natural gas based on target power and soil temperature to obtain secondary cooled natural gas.

[0011] In another possible implementation, the compressor module also outputs waste heat gas generated during the natural gas pressurization process. The organic Rankine cycle module specifically transfers heat from the waste heat gas to the organic working fluid in the evaporator, evaporating the waste heat gas to 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. This low-pressure steam is then fed into a condenser for condensation, producing a liquid product. This liquid product is then returned to the evaporator via a working fluid pump for the initial cooling of the pressurized natural gas.

[0012] In another possible implementation, a dry-wet combined air cooler cooling module is specifically used for the dry air cooling module to dissipate heat from the natural gas after the first cooling through air, and the wet air cooling module to cool the natural gas after the first cooling through water evaporation and heat absorption.

[0013] In another possible implementation, the dry air cooling module includes heat dissipation fins and ventilation equipment, and the wet air cooling 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 temperature of gas 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] Among them, q v is the gas transmission volume, P1 is the starting pressure of the gas transmission pipeline, P2 is the end 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a natural gas transmission system provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of another natural gas transmission system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

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

[0023] Additionally, in the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present concepts in a concrete manner.

[0024] In an embodiment of the present 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 temperature of gas 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 describes that 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.

[0027] In the embodiment of the present application, the gas delivery volume and the gas delivery volume influencing factor satisfy the following formula 1.

[0028]

[0029] Among them, q v is the gas transmission volume, P1 is the starting pressure of the gas transmission pipeline, P2 is the end 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.

[0030] It should be understood that, from the above formula 1, for existing pipelines, parameters such as pipeline diameter, length, pressure and medium properties are relatively immutable, while friction coefficient λ, average temperature ΔT and compression 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 3.

[0034]

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

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

[0037] As for the compression factor Z, the compression factor Z satisfies the following formula 4.

[0038]

[0039] Among them, T r is the contrast temperature, Tc is the critical temperature (constant), T Q is the delivery temperature.

[0040] It should be understood that reducing the delivery temperature T Q , that is, the contrast temperature Tr is reduced, that is, the compression factor Z is reduced. v ∝Z -0.5 , therefore, a decrease in Z will also cause q v The increase in the flow rate can increase the delivery volume.

[0041] Regarding the average temperature ΔT, the average temperature ΔT satisfies the following formula 5.

[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 QWhen the average temperature ΔT decreases, q v ∝T -0.5 Therefore, the delivery temperature is reduced, the average temperature is reduced, and the pipeline delivery volume is increased.

[0045] The soil temperature refers to the soil temperature at the natural gas pipeline where the natural gas is buried.

[0046] It should be understood that pipelines for transporting natural gas are usually buried at a depth of 1-2 meters. Therefore, the soil temperature is the temperature of the soil 1-2 meters from the ground surface.

[0047] In summary, when the conveying temperature T Q When it decreases: gas viscosity μ decreases, Reynolds number Re increases, and λ decreases; compared with temperature T r A decrease in temperature results in a smaller compressibility factor, Z, and a lower average temperature, ΔT. All of these changes increase pipeline throughput. The transmission temperature directly affects pipeline gas throughput, while also indirectly influencing gas physical properties (viscosity, compressibility, etc.), resulting in a multi-factor coupling effect.

[0048] like Figure 1 As shown, a natural gas transmission system provided in an embodiment of the present application 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 the natural gas and output the pressurized natural gas.

[0050] It should be understood that pressurizing natural gas through the compressor module can provide transmission power for natural gas, allowing the pipeline to continuously transport natural gas. However, the pressurization process will cause the temperature of the natural gas to rise, thus reducing the pipeline's transport 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 the embodiment of the present application, 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 electricity, the inverter converts the current, and the photovoltaic energy storage device balances power generation with electricity demand. A wind power generation module includes a wind turbine, a generator, a power control device, and a wind energy storage device. The wind turbine and generator convert wind energy into electricity, the power control device converts the current, and the wind energy storage device balances power generation with electricity demand.

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

[0055] The energy storage module 103 is used to store electrical energy and determine 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, daytime and nighttime air temperature, and soil temperature.

[0056] The soil temperature refers to the soil temperature at the natural gas pipeline where the natural gas is buried.

[0057] It should be understood that pipelines for transporting natural gas are usually buried at a depth of 1-2 meters. Therefore, the soil temperature is the temperature of the soil 1-2 meters from the ground surface.

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

[0059] The cooling module 104 is configured to cool the pressurized natural gas based on the target power of electric 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.

[0060] It should be understood that the embodiments of the present application do not limit the preset temperature threshold. For example, the preset temperature threshold may be 1 degree, 5 degrees, or 10 degrees.

[0061] In the embodiment of the present 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 natural gas temperature is lower than the soil temperature, the cooling module's operating power is too high, increasing energy consumption. Therefore, limiting the temperature of the cooled natural gas to above or equal to the soil temperature can reduce energy consumption. Furthermore, natural gas is affected by soil temperature during pipeline transmission. Therefore, if the natural gas temperature is lower than the soil temperature, it will rise during transmission due to the influence of soil temperature. This results in wasted energy consumed for cooling. Therefore, limiting the temperature of the cooled natural gas to above 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 dry-wet combined air cooler cooling module. The ORC module is configured to perform a first cooling of the pressurized natural gas to obtain first-cooled natural gas. The dry-wet combined air cooler cooling module is configured to perform a second cooling of the first-cooled natural gas based on target power and soil temperature to obtain second-cooled natural 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 of the present application, the compressor module is also used to output 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. The 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 product. The liquid product is then returned to the evaporator via a working fluid pump for the initial cooling of the pressurized natural gas.

[0066] In one possible implementation, the dry-wet combined 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 dry-wet combined air cooler cooling module is specifically designed to dissipate heat from the natural gas after the initial cooling process through air exchange in the dry air cooling module, and absorb heat through water evaporation in the wet air cooling module. 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 the 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. The cooling module then cools the pressurized natural gas based on the target power and the soil temperature, producing cooled natural gas. The difference between the temperature of the cooled natural gas and the soil temperature is less than a preset temperature threshold. This allows for the rational use of electrical energy to control the operating power of the cooling module, reducing both temperature and energy consumption. The output module then outputs the cooled natural gas. Since the natural gas delivery volume is negatively correlated with its temperature, the delivery volume of cooled natural gas can be increased, thereby improving delivery efficiency.

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

[0070] In the embodiment of the present application, the environmental information includes at least one of the following: season information, day and night air temperature, and soil temperature. The environmental information is used to indicate at least one of weather temperature, solar illumination intensity, and wind intensity.

[0071] It should be understood that seasonal variations in light intensity, temperature, and wind speed all affect the power generated by the power supply module, which in turn affects the power provided to the cooling module. Furthermore, differences in daytime and nighttime temperatures affect soil temperature, which in turn affects the required temperature reduction for the natural gas. Consequently, the cooling module's operating power needs to be adjusted by controlling the target power.

[0072] In the embodiment of the present application, the energy storage module 103 may include an electric energy storage module and a dynamic temperature control module. The electric energy storage module is used to store electric energy, and the dynamic temperature control module is used to determine the target power based on the electric energy transmission adjustment strategy, the stored electric energy and the environmental information.

[0073] In an embodiment of the present application, the power transmission adjustment strategy includes at least one of the following: when the power stored in the energy storage module is greater than a preset power threshold, increasing the power of power transmitted to the cooling module. When the power stored in the energy storage module is less than or equal to the preset power threshold, reducing the power of power transmitted to the cooling module. When the weather temperature is greater than a preset temperature threshold, reducing the power of power transmitted to the cooling module. When the weather temperature is less than or equal to the preset temperature threshold, increasing the power of power transmitted to the cooling module. When the light intensity is greater than a preset light intensity threshold, increasing the power of power transmitted to the cooling module. When the light intensity is less than or equal to the preset light intensity threshold, reducing the power of power transmitted to the cooling module. When the wind intensity is greater than a preset wind intensity threshold, increasing the power of power transmitted to the cooling module. When the wind intensity is less than or equal to the preset wind intensity threshold, reducing the power of power transmitted to the cooling module.

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

[0075] It is understood that when the energy stored in the energy storage module is greater than the preset threshold, it indicates that the energy is sufficient, and the power supplied to the cooling module can be increased to increase the cooling module's operating power, thereby reducing the natural gas delivery temperature. When the energy stored in the energy storage module is less than or equal to the preset threshold, it indicates that the current energy is insufficient, and the power supplied to the cooling module can be reduced to reduce energy consumption.

[0076] It is understood that when the weather temperature is greater than the preset temperature threshold, the soil temperature may be high. Therefore, the power supplied to the cooling module can be reduced to lower the cooling module's operating power. This reduces the extent of the natural gas cooling, thereby preventing the natural gas temperature from falling below the soil temperature. When the weather temperature is less than or equal to the preset temperature threshold, 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 extent of the natural gas cooling, thereby increasing the natural gas delivery rate.

[0077] It should be understood that when the light intensity is greater than the preset light intensity threshold, it indicates that sufficient electrical energy is being generated. The power delivered to the cooling module can be increased to increase the cooling module's operating power, thereby lowering the natural gas delivery temperature. When the light intensity is less than or equal to the preset light intensity threshold, it indicates that insufficient electrical energy is being generated. The power delivered to the cooling module can be reduced to reduce energy consumption.

[0078] It should be understood that when the wind intensity is greater than the preset wind intensity threshold, it indicates that sufficient electrical energy is being generated, and the power delivered to the cooling module can be increased to increase the cooling module's operating power, thereby reducing the natural gas delivery temperature. When the wind intensity is less than or equal to the preset wind intensity threshold, it indicates that less electrical energy is being generated, and the power delivered to the cooling module can be reduced to reduce energy consumption.

[0079] In some embodiments, the power transmission adjustment strategy further includes: increasing the power transmitted to the cooling module when the power 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. Reducing the power transmitted to the cooling module when the power 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 following describes the embodiments of the present application with reference to specific examples. Figure 2As shown, the compressor can pressurize natural gas to produce pressurized natural gas, which is high-temperature natural gas. The organic Rankine cycle module can then perform a first cooling of the high-temperature natural gas. The dry-wet combined air cooler cooling module can then perform a second cooling. The output module can then output the second cooled natural gas.

[0081] At the same time, when the compressor pressurizes natural gas, it generates waste heat gas. The organic Rankine cycle module can use this waste heat to generate electricity and store it in the energy storage module. Furthermore, the power supply module (such as a photovoltaic module, a wind power module, or a grid power module) can generate electricity and store it in the energy storage module. The dynamic temperature control module can then determine the amount of electricity to provide to the dry-wet combined air cooler cooling module based on the electricity in the energy storage module and environmental information.

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

[0083] The units described as separate components may or may not be physically separate, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple different places. Some or all of the classified units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0084] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0085] If the integrated unit is implemented in the form of 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 solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all categories or parts of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a device (which can be a single-chip microcomputer, chip, etc.) or a processor to execute all categories or partial steps of the various embodiments of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0086] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A natural gas transmission system, characterized in that: The system comprises: A compressor module, configured to pressurize the natural gas and output the pressurized natural gas; a power supply module, configured to generate electrical energy and transmit the electrical energy to the energy storage module; The energy storage module is used to store the electric energy and determine the electric energy of target power to be delivered to the cooling module based on the stored electric energy and environmental information; a cooling module configured to cool the pressurized natural gas based on the target power of electric energy and the soil temperature to obtain the 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 being the soil temperature at a natural gas pipeline buried in a pipeline for transporting the natural gas; The output module is used to output the cooled natural gas; wherein the gas output of the natural gas is negatively correlated with the temperature of the natural gas being transported.

2. The system according to claim 1, wherein: The environmental information includes at least one of the following: seasonal information, day and night temperatures, and soil temperature; The energy storage module is specifically used to determine the target power based on the power transmission adjustment strategy, the stored power and the environmental information, where the environmental information is used to indicate at least one of weather temperature, solar illumination intensity and wind intensity.

3. The system according to claim 2, characterized in that The power transmission adjustment strategy includes at least one of the following: When the electric energy stored in the energy storage module is greater than a preset electric energy threshold, increasing the power of the electric energy transmitted to the cooling module; When the electric energy stored in the energy storage module is less than or equal to the preset electric energy threshold, reducing the power of electric energy transmitted to the cooling module; When the weather temperature is greater than a preset temperature threshold, reducing the power of the electric energy transmitted to the cooling module; When the weather temperature is less than or equal to a preset temperature threshold, increasing the power of the electric energy transmitted to the cooling module; When the light intensity is greater than a preset light intensity threshold, increasing the power of the electric energy transmitted to the cooling module; When the light intensity is less than or equal to a preset light intensity threshold, reducing the power of the electric energy supplied to the cooling module; When the wind intensity is greater than a preset wind intensity threshold, increasing the power of the electric energy transmitted to the cooling module; When the wind intensity is less than or equal to the preset wind intensity threshold, the power of transmitting electric energy to the cooling module is reduced.

4. The system according to any one of claims 1 to 3, characterized in that The cooling module includes: an organic Rankine cycle module and a dry-wet combined air cooler cooling module; The organic Rankine cycle module is used to perform a first cooling on the pressurized natural gas to obtain the first cooled natural gas; The dry-wet combined air cooler cooling module is used to perform a second cooling on the natural gas after the first cooling based on the electric energy of the target power and the soil temperature to obtain the natural gas after the second cooling.

5. The system according to claim 4, characterized in that 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, so that the waste heat gas evaporates to obtain high-temperature and high-pressure steam; after inputting the high-temperature and high-pressure steam into the expander for power generation, low-pressure steam is obtained; the low-pressure steam is input into the condenser for condensation to obtain a liquid object; and the liquid object is returned to the evaporator through the working fluid pump to perform the first cooling of the pressurized natural gas.

6. The system according to claim 4, characterized in that The dry-wet combined air cooler cooling module is specifically used for the dry air cooling module to dissipate heat from the natural gas after the first cooling through air, and the wet air cooling module to cool the natural gas after the first cooling through water evaporation and heat absorption.

7. The system according to claim 6, characterized in that The dry air cooling module includes heat dissipation fins and ventilation equipment, and the wet air cooling module includes: a spray device, a water circulation system and a demisting device.

8. The system according to any one of claims 1 to 3, 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.

9. The system according to any one of claims 1 to 3, 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 temperature of gas in the pipeline.

10. The system according to any one of claims 1 to 3, characterized in that The gas delivery volume and the gas delivery volume influencing factor satisfy the following formula: Among them, q v is the gas transmission volume, P1 is the starting pressure of the gas transmission pipeline, P2 is the end 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.

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