Crude oil transport pipeline, crude oil transport system, and control method

Abstract

The application discloses a crude oil conveying pipeline, a crude oil conveying system and a control method. The crude oil conveying pipeline comprises an outer pipe and an inner pipe. The outer pipe side wall is communicated with a gas conveying part. The gas conveying part is used for conveying high-temperature and high-pressure gas into the outer pipe. The inner pipe is sleeved in the outer pipe and is used for conveying crude oil. A gas conveying channel is formed between the inner pipe and the outer pipe. The high-temperature and high-pressure gas conveyed by the gas conveying part enters the gas conveying channel. The inner side wall of the inner pipe forms a plurality of gas storage grooves. Each gas storage groove is communicated with the gas conveying channel through at least one gas channel. The adhesion between the crude oil and the inner wall of the inner pipe is greatly reduced, the viscosity of the crude oil is reduced, and the conveying capacity of the crude oil is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of crude oil pipeline technology, and in particular to a crude oil transportation pipeline, a crude oil transportation system, and a control method. Background Technology

[0002] Pipeline oil transportation involves pressurizing and heating crude oil and transporting it from oil fields to refineries, terminals, and other locations via pipelines. Due to the characteristics of crude oil during pipeline transportation, factors such as its viscosity coefficient, pipeline length, pipe diameter, crude oil temperature, and pressure can increase transmission resistance, leading to significant temperature and pressure losses, and even pipeline condensation. Therefore, to reduce transmission resistance in pipelines, the industry often uses pressurization stations and water-jacketed furnaces to heat and pressurize the crude oil. Pressurization provides kinetic energy to overcome geographical differences and pressure losses along the pipeline route. Heating is a measure taken for crude oil with high wax content, high pour point, and high viscosity ("three-high" crude oil), aiming to maintain the crude oil temperature in the pipeline above or above its pour point to ensure smooth flow. However, heated crude oil pipeline transportation also suffers from heat dissipation losses and frictional losses. Because the oil flow temperature is higher than the ambient temperature around the pipeline, there is a radial temperature difference. The heat energy carried by the hot oil will be continuously dissipated out of the pipe, causing its temperature to gradually decrease during forward transportation. This results in axial heat loss, a decrease in oil flow temperature, an increase in viscosity, and a gradual increase in pressure drop per unit length of pipeline, which can easily lead to pipeline accidents. Summary of the Invention

[0003] The main objective of this invention is to propose a crude oil transportation pipeline, a crude oil transportation system, and a control method, which aims to solve the problem of high resistance in existing crude oil transportation pipelines when transporting crude oil.

[0004] To achieve the above objectives, the present invention provides a crude oil transportation pipeline, comprising an outer pipe and an inner pipe. The sidewall of the outer pipe is connected to a gas delivery section, which is used to deliver high-temperature and high-pressure gas into the outer pipe. The inner pipe is sleeved inside the outer pipe for transporting crude oil. A gas delivery channel is formed between the inner pipe and the outer pipe, and the high-temperature and high-pressure gas delivered by the gas delivery section enters the gas delivery channel. The inner sidewall of the inner pipe forms a plurality of gas storage tanks, and each gas storage tank is connected to the gas delivery channel through at least one gas passage.

[0005] Optionally, the opening and / or inner wall of the gas storage tank are inclined to face the direction of crude oil flow.

[0006] Optionally, a heating element is provided on the inner wall of the outer tube to heat the gas in the gas delivery channel.

[0007] Optionally, the heating element includes an electric heating film; and / or, a temperature sensor and / or a pressure sensor are provided in the gas delivery channel.

[0008] Optionally, the inner wall of the outer tube is coated with an insulation layer, and the heating element is located on the insulation layer.

[0009] Optionally, the insulation layer is an aerogel coating; and / or, the thickness of the insulation layer is 0.5 to 2 mm.

[0010] This invention provides a crude oil transportation system, comprising a crude oil transportation section, an oil and gas heating and pressurization section, and a new energy power generation device. The crude oil transportation section includes a plurality of crude oil transportation pipelines connected end to end in sequence, and the inner wall of the crude oil transportation pipelines is provided with a heating section. The oil and gas heating and pressurization section is connected to the crude oil transportation section and is used to heat and / or pressurize the crude oil before transporting it into the crude oil transportation section. The new energy power generation device is used to supply electricity to the heating section.

[0011] This invention provides a control method for a crude oil transportation system. The crude oil transportation system includes a crude oil transportation section, an oil and gas heating and pressurization section, and a new energy power generation device. The crude oil transportation section includes multiple crude oil transportation pipes connected end-to-end, and the inner wall of each crude oil transportation pipe is provided with a heating element. The oil and gas heating and pressurization section is connected to the crude oil transportation section and is used to heat and / or pressurize the crude oil before transporting it into the crude oil transportation section. The new energy power generation device is used to supply electricity to the heating element, and the inner side wall of the outer pipe of the crude oil transportation section of the crude oil transportation system is provided with a heating element. The crude oil transportation control method includes the following steps:

[0012] Obtain the state characteristic parameters of the crude oil to be transported, the diameter of the inner tube, and the ambient air pressure parameters;

[0013] The target required pressure parameters and target required temperature parameters are determined based on the state characteristic parameters of the crude oil to be transported, the diameter of the inner pipe, and the ambient air pressure parameters.

[0014] The power generation parameters of the new energy power generation device are obtained, and the theoretical supply pressure parameters and theoretical supply temperature parameters of the heating section are determined by querying the mapping relationship based on the power generation parameters. The mapping relationship is the correlation between the power generation parameters and the theoretical supply pressure parameters and theoretical supply temperature parameters.

[0015] The operating strategy is determined based on the target demand pressure parameters, target demand temperature parameters, theoretical supply pressure parameters, and theoretical supply temperature parameters, and the operation of the oil and gas heating and pressurizing section and the heating section is controlled according to the operating strategy.

[0016] Optionally, determining the operating strategy based on the target demand pressure parameter, target demand temperature parameter, theoretical supply pressure parameter, and theoretical supply temperature parameter includes:

[0017] When the theoretical supply pressure parameter is greater than the target required pressure parameter, and the theoretical supply temperature parameter is greater than the target required temperature parameter, the heating unit is controlled to operate;

[0018] When the theoretical pressure parameter is less than the target required pressure parameter and the theoretical temperature parameter is less than the target required temperature parameter, the oil and gas heating and pressurizing section and the heating section are controlled to operate simultaneously.

[0019] A crude oil transportation system is provided, wherein a heating element is provided on the inner wall of the outer pipe of the crude oil transportation section of the crude oil transportation system; the crude oil transportation system further includes a control device, the control device being electrically connected to the new energy power generation device, the oil and gas heating and pressurizing section, and the heating element; the control device includes a memory, a processor, and a crude oil transportation control program stored in the memory, the processor executing the crude oil transportation control program to implement the steps of the crude oil transportation control method.

[0020] In the technical solution of this invention, during the transportation of crude oil, the crude oil is located in the inner pipe, while the gas delivery unit sends high-temperature and high-pressure gas into the gas delivery channel. The gas entering the gas delivery channel passes through the gas passage and the gas storage tank before entering the inner pipe. Since the density of crude oil is nearly 800 times that of air, the gas entering the inner pipe forms a gas film between the crude oil and the inner pipe, separating the crude oil from the inner pipe. This greatly reduces the adhesion between the crude oil and the inner wall of the inner pipe, thereby reducing the viscosity of the crude oil and greatly improving the crude oil transportation capacity. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A schematic diagram of an embodiment of the crude oil transportation system provided by the present invention;

[0023] Figure 2 for Figure 1 Cross-sectional view of the crude oil pipeline along its length;

[0024] Figure 3 for Figure 1 A radial cross-sectional view of the crude oil pipeline;

[0025] Figure 4 for Figure 1 A magnified view of a portion of the inner tube;

[0026] Figure 5 for Figure 1 A schematic diagram of the structure of the gas storage tank and gas passage;

[0027] Figure 6 for Figure 1 Cross-sectional view of the gas storage tank and gas passage;

[0028] Figure 7 for Figure 1 A schematic diagram of the unfolded structure of a crude oil transport pipeline in China;

[0029] Figure 8 This is a flowchart of an embodiment of the crude oil transport control method provided by the present invention.

[0030] Explanation of reference numerals in the accompanying drawings of the embodiments provided in this invention:

[0031] label name label name 1000 crude oil transportation system 4 Heating section 100 crude oil pipeline 5 Insulation layer 1 outer tube 6 crude 2 Inner tube 7 air film 21 gas storage tank 200 Control device 22 airway 300 New energy power generation equipment 3 Gas delivery channel

[0032] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0036] Pipeline oil transportation involves pressurizing and heating crude oil and transporting it from oil fields to refineries, terminals, and other locations via pipelines. Due to the characteristics of crude oil during pipeline transportation, factors such as its viscosity coefficient, pipeline length, pipe diameter, crude oil temperature, and pressure can increase transmission resistance, leading to significant temperature and pressure losses, and even pipeline condensation. Therefore, to reduce transmission resistance in pipelines, the industry often uses pressurization stations and water-jacketed furnaces to heat and pressurize the crude oil. Pressurization provides kinetic energy to overcome geographical differences and pressure losses along the pipeline route. Heating is a measure taken for crude oil with high wax content, high pour point, and high viscosity ("three-high" crude oil), aiming to maintain the crude oil temperature in the pipeline above or above its pour point to ensure smooth flow. However, heated crude oil pipeline transportation also suffers from heat dissipation losses and frictional losses. Because the oil flow temperature is higher than the ambient temperature around the pipeline, there is a radial temperature difference. The heat energy carried by the hot oil will be continuously dissipated out of the pipe, causing its temperature to gradually decrease during forward transportation. This results in axial heat loss, a decrease in oil flow temperature, an increase in viscosity, and a gradual increase in pressure drop per unit length of pipeline, which can easily lead to pipeline accidents.

[0037] In view of this, the present invention provides a crude oil transportation pipeline, a crude oil transportation system and a control method, which reduces the viscous force between crude oil and the inner wall of the inner pipe, thereby reducing the viscosity of crude oil and greatly improving the crude oil transportation capacity. Figure 1 A schematic diagram of an embodiment of the crude oil transportation system provided by the present invention; Figure 2 for Figure 1 Cross-sectional view of the crude oil pipeline along its length; Figure 3 for Figure 1 A radial cross-sectional view of the crude oil pipeline; Figure 4 for Figure 1 A magnified view of a portion of the inner tube; Figure 5 for Figure 1A schematic diagram of the structure of the gas storage tank and gas passage; Figure 6 for Figure 1 Cross-sectional view of the gas storage tank and gas passage; Figure 7 for Figure 1 A schematic diagram of the unfolded structure of a crude oil transport pipeline.

[0038] In an embodiment of the present invention, please refer to Figure 1 The crude oil transport pipeline 100 includes an inner pipe 2 and an outer pipe 1. The side wall of the outer pipe 1 is connected to a gas delivery section, which is used to deliver high-temperature and high-pressure gas into the outer pipe 1. The inner pipe 2 is sleeved inside the outer pipe 1 and is used to transport crude oil 6. A gas delivery channel 3 is formed between the inner pipe 2 and the outer pipe 1. The high-temperature and high-pressure gas delivered by the gas delivery section enters the gas delivery channel 3. A plurality of gas storage tanks 21 are formed on the inner side wall of the inner pipe 2. Each gas storage tank 21 is connected to the gas delivery channel 3 through at least one gas passage 22.

[0039] In the above technical solution, the crude oil transportation pipeline 100 includes an outer pipe 1 and an inner pipe 2. The outer pipe 1 is connected to the gas delivery section. This invention does not limit the specific structure of the gas delivery section, as long as it can provide high-temperature, high-pressure gas to the outer pipe 1. Since natural gas is often generated during crude oil extraction, to save energy, the generated natural gas can be converted into high-temperature, high-pressure gas and delivered into the outer pipe 1. The inner pipe 2 is connected to the outer pipe 1, such as... Figure 1 As shown, the sidewall of the inner tube 2 is recessed inward to form multiple gas storage slots 21. Each gas storage slot 21 is connected to the gas delivery channel 3 through at least one air passage 22. The number of gas storage slots 21 is not limited. Preferably, the gas storage slots 21 are distributed throughout the sidewall of the inner tube 2. The gas storage slots 21 can be used to store gas and continuously provide pressure to the crude oil 6. At the same time, the number of air passages 22 is not limited. The number of air passages 22 can be 1, 2, 3, 4, etc. The function of the air passages 22 is to connect the gas delivery channel 3 and the gas storage slots 21, so that the gas in the gas delivery channel 3 can enter the inner tube 2 through the air passages 22 and the gas storage slots 21. Since the diameter of the air passages 22 is small, the gas is further pressurized when it passes through the air passages 22.

[0040] In the technical solution of the present invention, during the transportation of crude oil 6 in the crude oil pipeline 100, the crude oil 6 is located in the inner pipe 2. At the same time, the gas delivery unit sends high-temperature and high-pressure gas into the gas delivery channel 3. The gas entering the gas delivery channel 3 passes through the gas passage 22 and the gas storage tank 21 and enters the inner pipe 2. Since the density of crude oil 6 is nearly 800 times that of air, the gas entering the inner pipe 2 forms a gas film 7 between the crude oil 6 and the inner pipe 2, separating the crude oil 6 and the inner pipe 2. This greatly reduces the adhesion between the crude oil 6 and the inner wall of the inner pipe 2, thereby reducing the viscosity of the crude oil 6 and greatly improving the transportation capacity of the crude oil 6.

[0041] In the technical solution of the present invention, the opening and / or inner wall of the gas storage tank 21 are inclined so that the direction of gas flow is consistent with the direction of crude oil 6 flow. The gas storage tank 21 plays a guiding role, provides power to the crude oil 6, and improves the transportation capacity of crude oil 6.

[0042] like Figure 1 As shown, the inner wall of the outer pipe 1 is further provided with a heating part 4 for heating the gas in the gas delivery channel 3. This application does not limit the specific structure of the heating part 4, which can be any heating tool, such as an electric heating film. During transportation, in order to keep the crude oil 6 warm and prevent the viscosity of the crude oil 6 from increasing due to heat dissipation, the temperature of the gas needs to be higher than the temperature of the crude oil 6. When the temperature of the gas is lower than the temperature of the crude oil 6, or when the temperature of the gas is lower than the preset temperature, the gas can be heated by the heating part 4. During the transmission process, the heat of the crude oil 6 will also decrease. When heating the crude oil 6, the heating part 4 transfers heat to the crude oil 6 through the gas medium, avoiding the carbon deposits and scale formed by the heating part 4 directly heating the crude oil 6, which would affect the heat transfer efficiency.

[0043] In some embodiments, the heating unit 4 includes an electric heating film; and / or, a temperature sensor and / or a pressure sensor are provided in the gas delivery channel 3. As mentioned above, the pressure and temperature of the gas need to be higher than the temperature and pressure of the crude oil 6. During the transportation of the crude oil 6, the pressure and temperature of the gas will be lost to some extent. The pressure and temperature of the gas can be monitored by the temperature sensor and the pressure sensor. When the temperature and pressure of the gas are lower than the preset values, the gas needs to be heated and pressurized. The electric heating film plays the role of heating the gas. The present invention does not limit the device for heating and pressurizing the gas.

[0044] like Figure 1As shown, in some embodiments, the heating part 4 is connected to a controller, which is located outside the outer tube 1; the controller is connected to a new energy power generation device 300, and the controller controls the new energy power generation device 300 to supply power to the heating part 4 so that the heating part 4 is heated.

[0045] In the technical solution of this invention, the new energy power generation device 300 can be a variety of new energy power generation forms such as photovoltaic power generation and wind power generation. Compared with the traditional method of providing energy through fuel oil, the new energy power generation is more energy-efficient and environmentally friendly. The new energy power generation device 300 is connected to the controller. The temperature sensor transmits the temperature of the gas to the controller. When the temperature of the gas is lower than a preset value, the controller controls the new energy power generation device 300 to provide electrical energy to the electric heating film to heat the gas to the required temperature.

[0046] In some technical solutions, to prevent gas temperature loss, the inner wall of the outer pipe 1 is coated with an insulation layer 5, and the heating part 4 is located on the insulation layer 5. The present invention does not limit the specific material of the insulation layer 5. For example, the insulation layer 5 can be a rubber layer adhered to the inner wall of the outer pipe 1, or it can be an aerogel coating coated on the outer pipe 1. When the insulation layer 5 is aerogel, the thickness of the insulation layer 5 can be limited to the range of 0.5 to 2 mm. When the insulation layer 5 is too thick, it will affect the flexibility of the crude oil transportation pipeline 100.

[0047] This invention provides a crude oil transportation system 1000, comprising a crude oil transportation section, an oil and gas heating and pressurizing section, and a new energy power generation device 300. The crude oil transportation section includes a plurality of crude oil transportation pipelines 100 connected end to end in sequence, and the inner wall of each crude oil transportation pipeline 100 is provided with a heating section 4. The oil and gas heating and pressurizing section is connected to the crude oil transportation section and is used to heat and / or pressurize crude oil 6 before transporting it into the crude oil transportation section. The new energy power generation device 300 is used to supply electricity to the heating section 4.

[0048] The crude oil transportation system 1000 includes all the technical solutions of the crude oil transportation pipeline 100, and therefore has all the beneficial effects brought about by the above solutions, which will not be elaborated here.

[0049] The above technical solution does not limit the specific structure of the oil and gas heating and pressurizing section. Its main function is to provide heat and pressure to the gas and crude oil 6 in the crude oil conveying pipeline 100. The crude oil conveying section includes multiple crude oil conveying pipelines 100 connected end to end in sequence. The inner wall of the crude oil conveying pipeline 100 is provided with a heating section 4 for heating the gas and crude oil 6. The heating section 4 is connected to the controller, and the controller is connected to the new energy power generation device 300. When it is necessary to heat the gas and crude oil 6, the controller controls the new energy power generation device 300 to transmit electricity. Compared with using traditional fuel oil to transport energy, using the new energy power generation device 300 is energy-saving and environmentally friendly.

[0050] like Figure 8 As shown, the present invention provides a control method for a crude oil transportation system 1000. Based on the crude oil transportation system 1000, the crude oil transportation system 1000 includes a crude oil transportation section, an oil and gas heating and pressurizing section, and a new energy power generation device 300. The crude oil transportation section includes a plurality of crude oil transportation pipes 100 connected end-to-end in sequence, and the inner wall of each crude oil transportation pipe 100 is provided with a heating section 4. The oil and gas heating and pressurizing section is connected to the crude oil transportation section and is used to heat and / or pressurize crude oil 6 before transporting it into the crude oil transportation section. The new energy power generation device 300 is used to supply electricity to the heating section 4. The control method of the crude oil transportation system 1000 includes the following steps:

[0051] S10. Obtain the state characteristic parameters of the crude oil to be transported, the diameter of the inner tube, and the ambient air pressure parameters;

[0052] Specifically, when transporting crude oil 6, the flowability and viscosity of crude oil 6, as well as the pressure and temperature required to be supplied to crude oil 6, will be affected by the different ambient temperature, pressure, viscosity, and the diameter of the pipeline transporting crude oil 6. Therefore, it is necessary to detect these factors and obtain the current parameters.

[0053] S20. Determine the target required pressure parameters and target required temperature parameters based on the state characteristic parameters of the crude oil to be transported, the diameter of the inner pipe, and the ambient air pressure parameters.

[0054] Specifically, based on data such as ambient temperature, pressure, crude oil 6 consistency, and pipe diameter of the pipeline transporting crude oil 6, the required temperature and pressure values ​​for transporting crude oil 6 are determined to ensure that crude oil 6 can be transported smoothly, avoid it being too sticky and sticking to the pipeline and unable to be transported, and avoid applying too high pressure and temperature to crude oil 6, which would result in excessive waste of resources.

[0055] S30. Obtain the power generation parameters of the new energy power generation device 300, and determine the theoretical pressure and theoretical temperature parameters of the heating unit 4 according to the mapping relationship of the power generation parameters. The mapping relationship is the correlation between the power generation parameters and the theoretical pressure and theoretical temperature parameters.

[0056] S40. Determine the operating strategy based on the target demand pressure parameters, target demand temperature parameters, theoretical supply pressure parameters, and theoretical supply temperature parameters, and control the operation of the oil and gas heating and pressurizing unit and the heating unit 4 according to the operating strategy.

[0057] Specifically, based on data such as ambient temperature, pressure, crude oil consistency, and the diameter of the pipeline transporting crude oil, the required temperature and pressure values ​​for transporting crude oil are determined. Based on these required crude oil temperature and pressure values, the required gas temperature and pressure are determined. After determining the required pressure and temperature for both crude oil and gas, the operation of the oil and gas heating and pressurizing unit and the heating unit 4 is controlled through an operational strategy to regulate the temperature and pressure of both crude oil and gas. This invention separates crude oil 6 from the pipeline using gas. Since the density of crude oil 6 is nearly 800 times that of air, the gas entering the inner pipe 2 forms a gas film 7 between the crude oil 6 and the inner pipe 2, separating them. This significantly reduces the viscosity between the crude oil and the inner wall of the inner pipe 2, thereby reducing the viscosity of crude oil 6 and greatly improving its transport capacity.

[0058] Furthermore, determining the operating strategy based on the target demand pressure parameter, target demand temperature parameter, theoretical supply pressure parameter, and theoretical supply temperature parameter includes:

[0059] S41. When the theoretical supply pressure parameter is greater than the target required pressure parameter and the theoretical supply temperature parameter is greater than the target required temperature parameter, control the heating unit to operate;

[0060] S42. When the theoretical pressure parameter is less than the target required pressure parameter and the theoretical temperature parameter is less than the target required temperature parameter, control the oil and gas heating and pressurizing unit and the heating unit 4 to operate simultaneously.

[0061] Specifically, when the heating unit 4 can provide the required pressure and temperature for the crude oil 6 and gas, it is preferentially used to provide the temperature and pressure for the crude oil 6 and / or gas. When the required temperature for the crude oil 6 and gas is too high and the heating unit 4 is insufficient to provide it, the oil and gas heating and pressurizing unit and the heating unit operate simultaneously. That is, the heating unit 4 is preferentially used to provide the temperature and pressure, and when the heating unit is insufficient, the oil and gas heating and pressurizing unit is added to provide the required temperature and pressure. This method saves energy.

[0062] This invention provides a crude oil transportation system 1000, which includes a crude oil transportation section, an oil and gas heating and pressurizing section, and a new energy power generation device 300. The crude oil transportation section includes a plurality of crude oil transportation pipes 100 connected end to end in sequence, and the inner wall of each crude oil transportation pipe 100 is provided with a heating section 4. The oil and gas heating and pressurizing section is connected to the crude oil transportation section and is used to heat and / or pressurize crude oil 6 before transporting it into the crude oil transportation section. The new energy power generation device 300 is used to supply electricity to the heating section 4, and the inner side wall of the outer pipe 1 of the crude oil transportation section of the crude oil transportation system 1000 is provided with the heating section 4. The crude oil transportation system 1000 also includes a control device 200, which is electrically connected to the new energy power generation device 2300, the oil and gas heating and pressurizing section, and the heating section 4.

[0063] The control device 200 includes a memory, a processor, and a crude oil delivery control program stored in the memory. The processor executes the crude oil delivery control program to implement the steps of the crude oil delivery control method.

[0064] The crude oil transportation control method in the crude oil transportation system 100 has all the above-mentioned technical solutions, and therefore also has all the beneficial effects brought about by the above solutions, which will not be elaborated here.

[0065] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A crude oil transportation system, characterized in that, include: A crude oil conveying unit includes multiple crude oil conveying pipelines connected end-to-end in sequence. Each crude oil conveying pipeline includes an inner pipe and an outer pipe. The sidewall of the outer pipe is connected to a gas delivery unit, which is used to deliver high-temperature and high-pressure gas into the outer pipe. The inner pipe is sleeved inside the outer pipe and is used to convey crude oil. A gas delivery channel is formed between the inner pipe and the outer pipe. The high-temperature and high-pressure gas delivered by the gas delivery unit enters the gas delivery channel. Multiple gas storage tanks are formed on the inner sidewall of the inner pipe. Each gas storage tank is connected to the gas delivery channel through at least one gas passage. The opening and / or inner sidewall of the gas storage tank are inclined to face the direction of crude oil flow. A heating unit is provided on the inner sidewall of the outer pipe to heat the gas in the gas delivery channel. An oil and gas heating and pressurizing unit, connected to the crude oil conveying unit, is used to heat and / or pressurize the crude oil and then convey it into the crude oil conveying unit; and, A new energy power generation device is used to supply electricity to the heating section.

2. The crude oil transportation system as described in claim 1, characterized in that, The heating element includes an electrically heated film; and / or, A temperature sensor and / or a pressure sensor are provided in the gas delivery channel.

3. The crude oil transportation system as described in claim 1, characterized in that, The inner wall of the outer tube is coated with an insulation layer, and the heating element is located on the insulation layer.

4. The crude oil transportation system as described in claim 3, characterized in that, The insulation layer is an aerogel coating; and / or, The thickness of the insulation layer is 0.5~2mm.

5. A crude oil transportation control method, characterized in that, Based on the crude oil transportation system as described in claim 1, the crude oil transportation control method includes the following steps: Obtain the state characteristic parameters of the crude oil to be transported, the diameter of the inner tube, and the ambient air pressure parameters; The target required pressure parameters and target required temperature parameters are determined based on the state characteristic parameters of the crude oil to be transported, the diameter of the inner pipe, and the ambient air pressure parameters. The power generation parameters of the new energy power generation device are obtained, and the theoretical supply pressure parameters and theoretical supply temperature parameters of the heating section are determined by querying the mapping relationship based on the power generation parameters. The mapping relationship is the correlation between the power generation parameters and the theoretical supply pressure parameters and theoretical supply temperature parameters. The operating strategy is determined based on the target demand pressure parameters, target demand temperature parameters, theoretical supply pressure parameters, and theoretical supply temperature parameters. The operation of the oil and gas heating and pressurizing section and the heating section is controlled according to the operating strategy. The process of determining the operating strategy based on the target demand pressure parameters, target demand temperature parameters, theoretical supply pressure parameters, and theoretical supply temperature parameters includes: When the theoretical supply pressure parameter is greater than the target required pressure parameter, and the theoretical supply temperature parameter is greater than the target required temperature parameter, the heating unit is controlled to operate; When the theoretical pressure parameter is less than the target required pressure parameter and the theoretical temperature parameter is less than the target required temperature parameter, the oil and gas heating and pressurizing section and the heating section are controlled to operate simultaneously.

6. The crude oil transportation system as described in claim 1, characterized in that, The crude oil transportation system also includes a control device, which is electrically connected to the new energy power generation device, the oil and gas heating and pressurization unit, and the heating unit. The control device includes a memory, a processor, and a crude oil delivery control program stored in the memory. The processor executes the crude oil delivery control program to implement the steps of the crude oil delivery control method as described in claim 5.

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