Drag-reducing pressurized oil pipeline and oil transportation system

Abstract

The application discloses a drag-reducing pressurized oil pipeline and an oil delivery system. The drag-reducing pressurized oil pipeline comprises a first pipeline, a second pipeline and a gas bag unit. The first pipeline is used for delivering crude oil. The second pipeline is sleeved outside the first pipeline, and a gas delivery channel is formed between the second pipeline and the first pipeline. The gas bag unit comprises a gas bag and a three-way valve. The gas bag is arranged on the inner side wall of the first pipeline and has a gas charging and discharging port. The three-way valve is embedded on the first pipeline and has a first port, a second port and a third port. The first port is in communication with the gas delivery channel, the second port is in communication with the gas charging and discharging port, and the third port is in communication with the first pipeline. The drag-reducing pressurized oil pipeline can heat and pressurize the crude oil during the delivery of the crude oil, reduce the viscous resistance between the inner wall of the pipeline and the crude oil, and effectively improve the delivery capacity of the crude oil.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crude oil transportation, in particular to a drag-reducing pressurized oil pipeline and an oil transportation system. BACKGROUND

[0002] Most of the crude oil in China has the properties of high viscosity and high freezing point. The heating transportation process is a commonly used transportation process for domestic crude oil pipelines. However, in the existing heating transportation of crude oil pipelines, there are still heat loss and friction loss. The temperature of the crude oil gradually decreases during the forward transportation process, the viscosity increases, the pressure drop of the oil pipeline per unit length gradually increases, and thus the transportation capacity of the crude oil is reduced, and even pipeline accidents can easily occur. SUMMARY

[0003] The main purpose of the present application is to provide a drag-reducing pressurized oil pipeline and an oil transportation system, which aims to solve the problem of temperature and pressure loss in the existing oil pipeline during the transportation of crude oil, and thus reduce the transportation capacity of the crude oil.

[0004] To achieve the above-mentioned purpose, the present application provides a drag-reducing pressurized oil pipeline, which comprises a first pipeline, a second pipeline and a gas bag unit, the first pipeline is used to transport crude oil; the second pipeline is sleeved outside the first pipeline, and a gas conveying channel is formed between the second pipeline and the first pipeline; the gas bag unit comprises a gas bag and a three-way valve, the gas bag is arranged on the inner side wall of the first pipeline, and the gas bag has a gas charging and discharging port; the three-way valve is embedded on the first pipeline, and the three-way valve has a first port, a second port and a third port, the first port communicates with the gas conveying channel, the second port communicates with the gas charging and discharging port, and the third port communicates with the first pipeline.

[0005] Optionally, the gas bag is annularly arranged on the inner side wall of the first pipeline.

[0006] Optionally, the gas bag unit further comprises a receiving groove, the receiving groove is fixedly arranged on the inner side wall of the first pipeline, and the groove opening faces the inner side of the first pipeline, and the gas bag is bonded in the receiving groove.

[0007] Optionally, the receiving groove is an annular structure, and the gas bag is annularly arranged in the receiving groove.

[0008] Optionally, a third pipeline is further included, the third pipeline is sleeved outside the second pipeline, and an insulation layer is arranged between the third pipeline and the second pipeline.

[0009] Optionally, the air bag unit further comprises a monitoring assembly, the monitoring assembly comprising at least one of a pressure sensor, a temperature sensor and a flow sensor, the pressure sensor, the temperature sensor and the flow sensor are all installed on the inner side wall of the first pipeline to monitor the temperature, pressure and flow in the first pipeline respectively.

[0010] Optionally, the three-way valve is an electromagnetic three-way valve, and the monitoring assembly further comprises a controller, the controller being arranged on the outer side wall of the third pipeline, and the controller being electrically connected with the pressure sensor, the temperature sensor, the flow sensor and the three-way valve respectively.

[0011] Optionally, the monitoring assembly further comprises a solar cell module and / or an energy storage battery module, wherein:

[0012] the solar cell module is arranged on the outer side wall or the periphery of the third pipeline, and the solar cell module is electrically connected with the controller, the pressure sensor, the temperature sensor, the flow sensor and the three-way valve respectively; and / or,

[0013] the energy storage battery module is arranged on the outer side wall of the third pipeline, and the energy storage battery module is electrically connected with the controller, the pressure sensor, the temperature sensor, the flow sensor and the three-way valve respectively.

[0014] Optionally, a plurality of air vent grooves are formed on the inner side wall of the first pipeline, and a plurality of air permeable holes are arranged on each air vent groove, and each air permeable hole is used for communicating the first pipeline with the gas conveying channel.

[0015] The application further provides an oil conveying system, which comprises the drag-reducing pressurized oil pipeline, the drag-reducing pressurized oil pipeline comprising a first pipeline, a second pipeline and an air bag unit, the first pipeline being used for conveying crude oil; the second pipeline being sleeved outside the first pipeline, and a gas conveying channel being formed between the second pipeline and the first pipeline; the air bag unit comprising an air bag and a three-way valve, the air bag being arranged on the inner side wall of the first pipeline, and the air bag having a gas charging and discharging port; the three-way valve being embedded on the first pipeline, and the three-way valve having a first port, a second port and a third port, the first port being communicated with the gas conveying channel, the second port being communicated with the gas charging and discharging port, and the third port being communicated with the first pipeline.

[0016] In the technical solution of this invention, heated crude oil is transported in the first pipeline, and heated compressed gas is transported in the gas delivery channel. The temperature and pressure of the gas in the gas delivery channel are higher than those of the crude oil in the first pipeline. When the first port of the three-way valve is connected to the second port and the third port is closed, because the pressure of the gas in the gas delivery channel is greater than the pressure of the crude oil in the first channel, the high-temperature and high-pressure gas in the gas delivery channel will pass through the three-way valve and enter the airbag from the second port to inflate the airbag. The inflated airbag can heat and pressurize the crude oil in the first pipeline. When the first port of the three-way valve is closed and the second port is connected to the third port, under the pressure of the crude oil in the first pipeline, the high-temperature and high-pressure gas in the airbag will pass through the three-way valve and be discharged through the third port to the space between the inner wall of the first pipeline and the crude oil. The discharged high-temperature and high-pressure gas can not only reduce the viscous resistance between the inner wall of the pipeline and the crude oil, but also supplement the heating of the crude oil. The drag-reducing and pressurizing oil pipeline of the present invention heats and pressurizes the crude oil by inflating and deflating the air bladder during the crude oil transportation process, and reduces the viscous resistance between the inner wall of the pipeline and the crude oil, thereby effectively improving the crude oil transportation capacity. Attached Figure Description

[0017] 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.

[0018] Figure 1 A schematic diagram of a structure of an embodiment of the drag-reducing and pressurizing oil pipeline provided by the present invention;

[0019] Figure 2 for Figure 1 Another perspective of the cross-section;

[0020] Figure 3 for Figure 2 Schematic diagram of the structure of the mid-section AA;

[0021] Figure 4 for Figure 2 A cross-sectional view of the airbag after deflation;

[0022] Figure 5 for Figure 4 Schematic diagram of the structure of the mid-section BB;

[0023] Figure 6 This is a schematic diagram of the airbag of the present invention during inflation;

[0024] Figure 7 Figure 9 is a schematic view of the structure of the air bag of the present application when deflated;

[0025] Figure 8 Figure 10 is a schematic view of the structure of the air bag of the present application after deflation;

[0026] Figure 9 Figure 11 is a schematic view of the structure of the air passage body provided by the present application;

[0027] Figure 10 Figure 12 is a schematic view of the structure of another embodiment of the drag-reducing pressurized oil pipeline provided by the present application;

[0028] Figure 11 Figure 13 is a schematic view of the structure of an embodiment of the oil delivery system provided by the present application;

[0029] Figure 12 Figure 14 is a schematic view of the structure of the connection between the water jacket heating furnace and the drag-reducing pressurized pipeline provided by the present application;

[0030] Figure 13 Figure 15 is a schematic view of the structure of an embodiment of the water jacket heating furnace provided by the present application.

[0031] BRIEF DESCRIPTION OF THE DRAWINGS

[0032]

[0033] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0035] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings). If the certain posture changes, the directional indications also change accordingly.

[0036] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0037] Therefore, the present application provides a drag-reducing pressurized oil pipeline and an oil transportation system. Figures 1 to 13 The present application provides an embodiment of a drag-reducing pressurized oil pipeline.

[0038] In the embodiments of the present application, please refer to Figures 1 to 5 The drag-reducing pressurized oil pipeline 100 includes a first pipeline 1, a second pipeline and a gas bag 3 unit, the first pipeline 1 is used to transport crude oil 11; the second pipeline is sleeved outside the first pipeline 1, and a gas conveying channel 2 is formed between the second pipeline and the first pipeline 1; the gas bag 3 unit includes a gas bag 3 and a three-way valve 4, the gas bag 3 is arranged on the inner side wall of the first pipeline 1, and the gas bag 3 has a gas charging and discharging port; the three-way valve 4 is embedded on the first pipeline 1, and the three-way valve 4 has a first port 41, a second port 42 and a third port 43, the first port 41 communicates with the gas conveying channel 2, the second port 42 communicates with the gas charging and discharging port, and the third port 43 communicates with the first pipeline 1.

[0039] In the technical solution of the present application, the first pipeline 1 transports heated crude oil 11, the gas conveying channel 2 transports compressed gas, and the temperature and pressure of the gas in the gas conveying channel 2 are higher than the temperature and pressure of the crude oil 11 in the first pipeline 1; when the first port 41 of the three-way valve 4 communicates with the second port 42, and the third port 43 is closed, because the pressure of the gas in the gas conveying channel 2 is greater than the pressure of the crude oil 11 in the first pipeline 1, the high-temperature and high-pressure gas in the gas conveying channel 2 will pass through the three-way valve 4 and enter the gas bag 3 from the second port 42, and the gas bag 3 is inflated, and the inflated gas bag 3 can heat and pressurize the crude oil 11 in the first pipeline 1 (for example Figures 2 to 3When the first port 41 of the three-way valve 4 is closed and the second port 42 communicates with the third port 43, under the pressure of the crude oil 11 in the first pipeline 1, the high-temperature and high-pressure gas in the air bag 3 is discharged to the space between the inner wall of the first pipeline 1 and the crude oil 11 through the third port 43 of the three-way valve 4. The discharged high-temperature and high-pressure gas not only reduces the viscous resistance between the inner wall of the pipeline and the crude oil 11, but also supplements the heating of the crude oil 11 (as shown in FIG. 2). Figures 4 to 5 During the transportation of the crude oil 11, the air bag 3 is inflated and deflated to heat and pressurize the crude oil 11 and reduce the viscous resistance between the inner wall of the pipeline and the crude oil 11, thereby effectively improving the transportation capacity of the crude oil 11.

[0040] It can be understood that the gas transported in the gas transportation channel 2 can be natural gas associated with the exploitation. The transportation of the natural gas at the same time as the transportation of the crude oil 11 can improve the transportation capacity of the oil pipeline.

[0041] In some embodiments of the present application, the air bag 3 is arranged on the inner side wall of the first pipeline 1. The air bag 3 has a ring structure. After being inflated, the air bag 3 heats and pressurizes the crude oil 11 in the first pipeline 1 in the circumferential direction, which is more uniform and has a better effect.

[0042] In some embodiments of the present application, please refer to Figures 6 to 8 The air bag 3 is attached to the receiving groove 5. When the air bag 3 is inflated, under the action of the high-temperature and high-pressure gas, the air bag 3 is pushed out of the receiving groove 5, and the inflated air bag 3 heats and pressurizes the crude oil 11. When the air bag 3 is deflated, under the pressure of the crude oil 11 in the first pipeline 1, the air bag 3 shrinks, and the deflated air bag 3 shrinks into the receiving groove 5. The receiving groove 5 is used to install and accommodate the air bag 3, which can protect the air bag 3. It should be noted that in some embodiments, the receiving groove 5 has a ring structure, and the air bag 3 is arranged in the receiving groove 5, which effectively protects the air bag 3 while improving the heating and pressurizing effect of the air bag 3 on the crude oil 11.

[0043] In some embodiments of the present application, please refer to Figures 2 to 5Further comprising a third pipeline 6 sleeved outside the second pipeline, and a heat preservation layer 7 is arranged between the third pipeline 6 and the second pipeline. The heat preservation layer 7 comprises an aerogel layer, a rubber layer, a sponge layer and the like; the heat preservation layer 7 can play a heat preservation role on the gas in the gas flow channel and the crude oil 11 in the first pipeline 1, the third pipeline 6 can effectively avoid the damage of the heat preservation layer 7, play a protection role on the heat preservation layer 7, and also play a certain heat preservation role.

[0044] In some embodiments of the application, the air bag 3 unit further comprises a monitoring assembly 8, the monitoring assembly 8 comprises at least one of a pressure sensor, a temperature sensor and a flow sensor, the pressure sensor, the temperature sensor and the flow sensor are all installed on the inner side wall of the first pipeline 1, for monitoring the temperature, pressure and flow in the first pipeline 1 respectively. The monitoring assembly 8 comprises one, two or three of the pressure sensor, the temperature sensor and the flow sensor, when the monitoring assembly 8 comprises the pressure sensor, the temperature sensor and the flow sensor at the same time, the temperature, pressure and flow in the first pipeline 1 can be monitored at the same time, and the air bag 3 can be inflated and deflated according to the monitoring result, which can improve the conveying capacity of the crude oil 11. It can be understood that a pressure, temperature and flow integrated sensor can be selected to monitor the pressure, temperature and flow at the same time, which is simple in structure and convenient to install.

[0045] In some embodiments of the application, the three-way valve 4 is an electromagnetic three-way valve 4, and the monitoring assembly 8 further comprises a controller, the controller is arranged on the outer side wall of the third pipeline 6, and the controller is electrically connected with the pressure sensor, the temperature sensor, the flow sensor and the three-way valve 4 respectively. The controller has wireless or wired communication function, the controller controls the three-way valve 4 according to the data collected by the pressure sensor, the temperature sensor and the flow sensor, the operation is more convenient, and the control is facilitated.

[0046] In some embodiments of the application, please refer to Figure 10 , the monitoring assembly 8 further comprises a solar cell module 82 and / or an energy storage battery module, wherein the solar cell module 82 is arranged on the outer side wall or the periphery of the third pipeline 6, and the solar cell module 82 is electrically connected with the controller, the pressure sensor, the temperature sensor, the flow sensor and the three-way valve 4 respectively; and / or,

[0047] The energy storage battery module is arranged on the outer side wall of the third pipeline 6, and the energy storage battery module is electrically connected with the controller, the pressure sensor, the temperature sensor, the flow sensor and the three-way valve 4 respectively.

[0048] The solar cell module 82 can supply power to the controller, the pressure sensor, the temperature sensor, the flow sensor and the three-way valve 4 by using solar energy, fully utilizes solar energy, and is conducive to reducing carbon emissions; the solar cell module 82 is installed on the outer wall or the periphery of the drag-reducing pressurized oil pipeline 100, the required power of one monitoring assembly 8 is very small, generally in the order of tens of watts, and the monitoring assembly 8 does not occupy the peripheral environment area; the small-scale new energy power generation is adopted to supply power, the installation area requirement is low, and the application range is wide.

[0049] The energy storage battery module supplies power to the controller, the pressure sensor, the temperature sensor, the flow sensor and the three-way valve 4; it can be understood that the controller and the energy storage battery module can be simultaneously installed in a control box 81, installation is facilitated, and the controller and the energy storage battery module are protected.

[0050] When the monitoring assembly 8 simultaneously includes the solar cell module 82 and the energy storage battery module, the solar cell module 82 can supply power to the energy storage battery module, the energy storage battery module stores electric quantity, and when the solar cell module 82 cannot supply power, the energy storage battery module can supply power to the controller, the pressure sensor, the temperature sensor, the flow sensor and the three-way valve 4, solar energy is fully utilized, carbon emissions are reduced, and power demand is guaranteed; it can be understood that the energy storage battery module is maximally configured as an energy storage capacity for guaranteeing power supply of the controller, the pressure sensor, the temperature sensor, the flow sensor and the three-way valve 4 in a seasonally lightless period.

[0051] In some embodiments of the present application, please refer to Figure 9 A plurality of ventilation grooves 12 are formed on the inner side wall of the first pipeline 1, a plurality of air permeable holes 13 are arranged on each ventilation groove 12, and each air permeable hole 13 is used to communicate the first pipeline 1 with the gas conveying channel 2. The high-temperature and high-pressure gas in the gas conveying channel 2 can enter the ventilation groove 12 through the air permeable hole 13, and form a gas film 14 between the inner wall of the first pipeline 1 and the crude oil 11, which can effectively reduce the viscous resistance between the inner wall of the pipeline and the crude oil 11, and improve the conveying capacity of the crude oil 11; when the gas pressure and the crude oil 11 pressure are kept equal, the crude oil 11 can seal the gas in the ventilation groove 12, reduce the contact area between the crude oil 11 and the inner wall of the first pipeline 1, and also reduce the viscous resistance between the inner wall of the pipeline and the crude oil 11, and improve the conveying capacity of the crude oil 11.

[0052] It can be understood that according to the length of the drag-reducing pressurized oil pipeline 100, the air bag 3 unit can be provided as a plurality of air bags 3 units, and the plurality of air bags 3 units are arranged along the length direction of the first pipeline 1; so as to guarantee the conveying capacity of the crude oil 11.

[0053] The application further provides an oil delivery system comprising the drag-reducing pressurized oil delivery pipeline 100, the specific structure of which is described in the above embodiments, as shown in Figures 1 to 10 It can be understood that, since the oil delivery system adopts all the technical solutions of the above embodiments, it has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0054] It can be understood that, the oil delivery pipeline of the oil delivery system is generally long, and can be configured by multiple drag-reducing pressurized oil delivery pipelines 100 according to distance, environment, and pressurization requirements.

[0055] In some embodiments of the application, referring to Figures 11 to 13 , the oil delivery system further comprises a water jacket heating furnace 200, the water jacket heating furnace 200 comprises a tank body 201, the tank body 201 is sequentially formed with a crude oil heat exchange chamber 202, a low-temperature heat storage chamber 203, a heating chamber 204, a gas heat exchange chamber 205, and a high-temperature heat storage chamber 206 from bottom to top, and the crude oil heat exchange chamber 202, the low-temperature heat storage chamber 203, the heating chamber 204, the gas exchange chamber, and the high-temperature heat storage chamber 206 are all filled with water.

[0056] The crude oil heat exchange chamber 202 is provided with a crude oil heat exchanger 207, the inlet end of the crude oil heat exchanger 207 is in communication with an oil supply pipeline, and the outlet end is in communication with the first pipeline 1.

[0057] The heating chamber 204 is connected with a heating unit, and the heating unit is used to heat the water in the heating chamber 204.

[0058] The gas exchange chamber is provided with a gas heat exchanger 208, the inlet end of the gas heat exchanger 208 is in communication with a gas supply pipeline, and the outlet end is in communication with the gas delivery channel 2.

[0059] The crude oil heat exchange chamber 202 is communicated with the low-temperature heat storage chamber 203 through a first pipeline, the low-temperature heat storage chamber 203 is communicated with the crude oil heat exchange chamber 202 through a second pipeline, and a first temperature control valve 210 is arranged on the first pipeline; the low-temperature heat storage chamber 203 is communicated with the heating chamber 204 through a third pipeline, the heating chamber 204 is communicated with the low-temperature heat storage chamber 203 through a fourth pipeline, and a second temperature control valve 211 is arranged on the third pipeline; the heating chamber 204 is communicated with the high-temperature heat storage chamber 206 through a fifth pipeline, the high-temperature heat storage chamber 206 is communicated with the heating chamber 204 through a sixth pipeline, a third temperature control valve 212 is arranged on the fifth pipeline, the gas heat exchange chamber 205 is communicated with the high-temperature heat storage chamber 206 through a seventh pipeline, the high-temperature heat storage chamber 206 is communicated with the gas heat exchange chamber 205 through an eighth pipeline, and a fourth temperature control valve 213 is arranged on the seventh pipeline; the first temperature control valve 210, the second temperature control valve 211, the third temperature control valve 212 and the fourth temperature control valve 213 are all check valves.

[0060] The control method of the water jacket heating furnace 200 comprises:

[0061] obtaining the temperatures of the crude oil heat exchange chamber 202, the low-temperature heat storage chamber 203, the heating chamber 204 and the gas heat exchange chamber 205;

[0062] when the temperature of the crude oil heat exchange chamber 202 is less than or equal to a first preset temperature, controlling the first temperature control valve 210 to open, and the crude oil heat exchange chamber 202 and the low-temperature heat storage chamber 203 perform water circulation heat exchange; when the temperature of the crude oil heat exchange chamber 202 is greater than the first preset temperature, controlling the first temperature control valve 210 to close;

[0063] when the temperature of the low-temperature heat storage chamber 203 is less than or equal to a second preset temperature, controlling the second temperature control valve 211 to open, and the low-temperature heat storage chamber 203 and the heating chamber 204 perform water circulation heat exchange; when the temperature of the low-temperature heat storage chamber 203 is greater than the second preset temperature, controlling the second temperature control valve 211 to close;

[0064] when the temperature of the heating chamber 204 is greater than or equal to a third preset temperature, controlling the third temperature control valve 212 to open, and the heating chamber 204 and the high-temperature heat storage chamber 206 perform water circulation heat exchange; when the temperature of the heating chamber 204 is less than the third preset temperature, controlling the third temperature control valve 212 to close;

[0065] When the temperature of the gas heat exchange chamber 205 is less than or equal to the fourth preset temperature, the fourth temperature control valve 213 is opened, and the gas heat exchange chamber 205 and the high-temperature heat storage chamber 206 exchange heat through water circulation; when the temperature of the gas heat exchange chamber 205 is greater than the fourth preset temperature, the fourth temperature control valve 213 is closed.

[0066] It is understood that the crude oil heat exchange chamber 202, the low temperature heat storage chamber 203, the heating chamber 204, the gas exchange chamber and the high temperature heat storage chamber 206 are all insulated with heat insulation material to insulate the water in each heat chamber; the outlet end of the gas heat exchanger 208 is connected to the gas transmission channel 2 through the vent pipe 209.

[0067] It should be noted that the first temperature control valve 210, the second temperature control valve 211, the third temperature control valve 212, and the fourth temperature control valve 213 do not work simultaneously. That is, only one temperature control valve is open at any given time. For example, when the first temperature control valve 210 is open, the second temperature control valve 211, the third temperature control valve 212, and the fourth temperature control valve 213 are all closed. The same applies to the other temperature control valves. Furthermore, when both the low-temperature heat storage chamber 203 and the high-temperature heat storage chamber 206 require heat transfer from the heating chamber 204, the heating chamber 204 prioritizes transferring heat to the low-temperature heat storage chamber 203 and then transfers heat to the high-temperature heat storage chamber 206.

[0068] By setting the preset temperatures of the first temperature control valve 210, the second temperature control valve 211, the third temperature control valve 212, and the fourth temperature control valve 213, heat exchange can be precisely controlled, reducing energy consumption. Simultaneously, the water jacket heater 200 works in coordination with the drag-reducing and pressurizing oil pipeline 100, allowing the water jacket heater 200 to deliver crude oil 11 and gas at suitable temperatures to the drag-reducing and pressurizing oil pipeline 100, thereby reducing energy consumption and increasing the transport capacity of crude oil 11.

[0069] The control method for the oil transportation system includes:

[0070] Step 1: Establish the relationship functions fT and fp between the optimal temperature (Toil) and pressure (Poil) for crude oil transportation.

[0071] Since the pressure replenishment within the drag-reducing and pressurizing oil pipeline 100 is based on the incompressibility of liquids, the crude oil 11 in the first pipeline 1 is compressed by the inflation of the airbag 3, occupying space in the first pipeline 1 and increasing the pressure in the first pipeline 1. Considering the economy and efficiency of the drag-reducing and pressurizing oil pipeline 100 in transporting crude oil 11, an optimal temperature is thus established. T oil ) and pressure ( Poil f T f p β oil W c P gas v oil D oil L oil α uh T oil P oil f T f p

[0072]

[0073]

[0074]

[0075] T oil P oil

[0076] f T f p T oil P oil ​​​​​​​​​​​​​​​​​​​​​​​

[0077] Step 3: Monitoring and Control of Drag-Reducing and Pressurized Oil Pipelines

[0078] Since the crude oil pipeline 11 is equipped with multiple drag-reducing and pressurizing oil pipelines 100, the current temperature of the drag-reducing and pressurizing oil pipelines 100 is obtained by monitoring the airbag unit 3. T ax ) and pressure ( P ax Data, each airbag has 3 units, and the local ambient temperature ( W c ), crude oil viscosity coefficient ( β oil ), crude oil flow rate 11 ( v oil ), the diameter of the first pipe 1 ( D oil ), thermal insulation coefficient ( α uh ), distance of location information ( L oil The data, including those from the control strategy and relational functions fT and fp, is analyzed and uploaded. Simultaneously, based on the analysis and calculation, the optimal temperature of the heating water jacket furnace is determined. T oil ) or pressure ( P oil It also controls the inflation and deflation of the airbag unit 3 to increase the temperature and pressure of the drag-reducing and pressurizing oil pipeline 100 in this section.

[0079] For some embodiments of the present invention, please refer to Figure 13 The heating unit includes a new energy power generation component 214, an adjustable water electrode heating component 216, and an auxiliary gas heating component 217.

[0080] The new energy power generation component 214 is located around the tank 201. The new energy power generation component 214 includes a power supply module and a power distribution control cabinet 215. The power supply module may include a photovoltaic generator, a wind turbine generator, or be connected to a new energy grid. The power supply module and the power distribution control cabinet 215 are electrically connected by a cable.

[0081] The adjustable electrode heating assembly and the auxiliary gas heating assembly 217 are both located inside the heating chamber 204, and the adjustable electrode heating assembly is electrically connected to the power distribution controller.

[0082] The adjustable electrode heating assembly enables the tracking of the maximum power of new energy sources, maximizing the utilization of new energy. The water jacket heating furnace 200 is heated primarily by new energy power supply and secondarily by gas heating, thereby improving the utilization rate of new energy sources and ensuring all-weather heating needs.

[0083] In some embodiments of the present application, the adjustable electrode heating assembly comprises a fixed water electrode 216b and a movable water electrode 216c, the movable water electrode 216c is driven by the driving part to move away from or close to the fixed water electrode 216b, so as to change the water resistance value and obtain the maximum power point power of the current new energy power generation assembly 214. According to the output power of the new energy power generation assembly 214, the position between the movable water electrode 216c and the fixed water electrode 216b is adjusted, so that the energy of the new energy power generation assembly 214 is maximally utilized, and then the water in the heating chamber 204 is heated by the adjustable electrode heating assembly.

[0084] It can be understood that the present application does not limit the specific structure of the driving part, for example, the driving part is a telescopic motor, a telescopic cylinder or the like for driving the movable water electrode 216c to move close to or away from the fixed water electrode 216b; preferably, the driving part comprises a slide rail 216d, a motor 216a, a driving gear, a driven gear and a connecting rod, the slide rail 216d is in sliding connection with the movable water electrode 216c, and the slide rail 216d plays a guiding role; the motor 216a is arranged outside the tank body 201, and the output shaft extends into the tank body 201; the driving gear is sleeved on the output shaft; the driven gear is arranged in the tank body 201 and is in engagement with the driving gear; one end of the connecting rod is in rotary connection with the side wall of the driven gear, and the other end is connected with the movable water electrode 216c, so as to drive the movable water electrode 216c to move close to or away from the fixed water electrode 216b; compared with the structure of the telescopic motor 216a and the like, the driving part is more accurate in controlling the moving distance of the movable water electrode 216c.

[0085] In some embodiments of the present application, a plurality of perforations are arranged through the movable water electrode 216c and the fixed water electrode 216b, so that water can flow out of the perforations, so as to reduce the resistance.

[0086] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made according to the inventive concept of the present application, the contents of the specification and the drawings, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A drag-reducing and pressurized oil pipeline, characterized in that, include: The first pipeline was used to transport crude oil; The second pipe is fitted outside the first pipe, and a gas transmission channel is formed between the second pipe and the first pipe. as well as, An airbag unit includes an airbag and a three-way valve. The airbag is disposed on the inner wall of the first pipe and has an inflation / deflation port. The three-way valve is embedded in the first pipe and has a first port, a second port, and a third port. The first port is connected to the air supply channel, the second port is connected to the inflation / deflation port, and the third port is connected to the first pipe. The airbag ring is disposed on the inner wall of the first pipe; The airbag unit also includes a storage groove, which is fixed to the inner wall of the first pipe and has its opening facing the inside of the first pipe. The airbag is attached to the storage groove. The gas transported in the gas transmission channel is natural gas that is generated as an associated product during extraction; The temperature and pressure of the gas in the gas transmission channel are higher than those of the crude oil in the first pipeline.

2. The drag-reducing and pressurized oil pipeline as described in claim 1, characterized in that, The storage tank has a ring structure, and the airbag is ring-shaped inside the storage tank.

3. The drag-reducing and pressurized oil pipeline as described in claim 1, characterized in that, It also includes a third pipe, which is sleeved outside the second pipe, and an insulation layer is provided between the third pipe and the second pipe.

4. The drag-reducing and pressurized oil pipeline as described in claim 3, characterized in that, The airbag unit also includes a monitoring component, which includes at least one of a pressure sensor, a temperature sensor, and a flow sensor. The pressure sensor, the temperature sensor, and the flow sensor are all installed on the inner wall of the first pipe to monitor the temperature, pressure, and flow rate in the first pipe, respectively.

5. The drag-reducing and pressurized oil pipeline as described in claim 4, characterized in that, The three-way valve is an electromagnetic three-way valve. The monitoring component also includes a controller, which is located on the outer wall of the third pipeline. The controller is electrically connected to the pressure sensor, the temperature sensor, the flow sensor, and the three-way valve.

6. The drag-reducing and pressurized oil pipeline as described in claim 5, characterized in that, The monitoring component further includes a solar cell module and / or an energy storage battery module, wherein: The solar cell module is disposed on or around the outer wall of the third pipe, and the solar cell module is electrically connected to the controller, the pressure sensor, the temperature sensor, the flow sensor, and the three-way valve, respectively; and / or, The energy storage battery module is located on the outer wall of the third pipe, and the energy storage battery module is electrically connected to the controller, the pressure sensor, the temperature sensor, the flow sensor, and the three-way valve.

7. The drag-reducing and pressurized oil pipeline as described in claim 1, characterized in that, The inner wall of the first pipe has a plurality of ventilation grooves, each ventilation groove having a plurality of ventilation holes, each ventilation hole being used to connect the first pipe to the gas delivery channel.

8. An oil transportation system, characterized in that, Including the drag-reducing and pressurized oil pipeline as described in any one of claims 1 to 7.

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