Oil conveying system

Abstract

Provided is an oil conveying system, comprising: a first pipeline (201), which is used for conveying crude oil (202); a second pipeline, which is sleeved outside of the first pipeline (201) and forms a gas conveying channel (206) with the first pipeline (201), wherein the temperature and pressure of a gas are greater than the temperature and pressure of the crude oil (202); and a plurality of gas bag units, which are arranged on the first pipeline (201) in the extension direction of the first pipeline (201), each gas bag unit comprising a gas bag (207) and a three-way valve (208), wherein the gas bags (207) are arranged on an inner wall of the first pipeline (201); the three-way valves (208) are embedded in the body of the first pipeline (201), with first ports (209) of the three-way valves (208) being in communication with the gas conveying channel (206), second ports (210) thereof being in communication with inflation and deflation ports of the gas bags (207), and third ports (211) thereof being in communication with the first pipeline (201); when the first ports (209) are in communication with the second ports (210), the gas is filled into the gas bags (207) from the gas conveying channel (206) so as to heat the crude oil (202); and when the second ports (210) are in communication with the third ports (211), the gas is discharged from the gas bags (207) into the first pipeline (201), so as to reduce the viscous resistance between the crude oil (202) and the inner wall of the first pipeline (201) and heat the crude oil (202).

Description

Oil transportation system Technical Field

[0001] The present application relates to the technical field of crude oil transportation, and in particular to an oil transportation system. Background Art

[0002] During crude oil pipeline transportation, in order to reduce the transportation resistance of crude oil in the pipeline, the industry often uses pressure stations and water-jacketed furnaces to heat and pressurize the crude oil. The pressurization provides kinetic energy to the crude oil to overcome the geographical position difference and pressure loss along the pipeline. Heating is a measure taken for crude oil with "three highs" (high wax content, high pour point and high viscosity). The purpose is to keep the temperature of the crude oil in the pipeline above the pour point or higher to ensure smooth flow of the crude oil.

[0003] However, currently used water-jacketed furnaces mostly use fossil fuels as their heat source. While providing heat for crude oil transportation to reduce its viscosity and ensure delivery, they fail to achieve low-carbon operation. Furthermore, crude oil pipelines are long and subject to diverse climates, such as deserts, high altitudes, uninhabited areas, and ecologically fragile environments. Fuel supply is extremely difficult, and construction and operation and maintenance costs are high, significantly increasing transportation costs.

[0004] Application Contents

[0005] The purpose of the embodiments of the present application is to provide an oil delivery system to solve some of the problems in the prior art.

[0006] In order to achieve the above objectives, the present application provides an oil delivery system, comprising:

[0007] The first pipeline is used to transport crude oil;

[0008] a second pipeline, sleeved outside the first pipeline, forming a gas transmission channel for transmitting gas between the first pipeline and the second pipeline, wherein the temperature and pressure of the gas are greater than the temperature and pressure of the crude oil;

[0009] A plurality of airbag units are arranged on the first pipe at intervals along the extension direction of the first pipe, each of the airbag units comprising an airbag and a three-way valve, the airbag being arranged on the inner wall of the first pipe, the three-way valve being embedded in the pipe body of the first pipe, the first port of the three-way valve being in communication with the gas transmission channel, the second port of the three-way valve being in communication with the inflation and deflation ports of the airbag, and the third port of the three-way valve being in communication with the first pipe;

[0010] When the first and second ports of the three-way valve are connected and the third port is closed, the gas supply channel inflates the air bag to heat the crude oil;

[0011] When the second port and the third port of the three-way valve are connected and the first port is closed, the air bag exhausts air into the first pipe to reduce the viscous resistance between the crude oil and the inner wall of the first pipe and heat the crude oil.

[0012] Preferably, the system further comprises:

[0013] The third pipe is sleeved outside the second pipe, and a heat-insulating layer is provided between the third pipe and the second pipe.

[0014] Preferably, the three-way valve is an electromagnetic three-way valve;

[0015] The airbag unit further includes:

[0016] A monitoring component is installed on the inner wall of the first pipeline, and the monitoring component includes a controller and at least one of a pressure sensor, a temperature sensor and a flow sensor; the controller is connected to at least one of the pressure sensor, the temperature sensor and the flow sensor and the three-way valve, and is used to control the three-way valve based on data from at least one of the pressure sensor, the temperature sensor and the flow sensor.

[0017] The monitoring component also includes:

[0018] a solar cell module and / or an energy storage battery module, disposed on the outer wall of the third pipe, the solar cell module and / or the energy storage battery module being connected to the monitoring component and the three-way valve, for supplying power to the detection component and the three-way valve;

[0019] The solar cell module is also used to charge the energy storage battery module.

[0020] Preferably, corresponding positions on the inner wall of the first pipe where the airbags are installed are provided with receiving grooves, and the airbags are arranged in the receiving grooves.

[0021] Preferably, the storage tank is an annular structure.

[0022] Preferably, a plurality of ventilation grooves are provided on the inner wall of the first pipeline, and a plurality of ventilation holes are provided on the ventilation grooves. The gas in the gas transmission channel enters the ventilation grooves through the ventilation holes, forming an air film between the inner wall of the first pipeline and the crude oil, so as to reduce the viscous resistance between the inner wall of the first pipeline and the crude oil.

[0023] Preferably, the system further comprises:

[0024] A compressed gas heating device, wherein the gas outlet end of the compressed gas heating device is connected to the gas pipeline, and the gas outlet end of the compressed gas heating device is communicated with the gas transmission channel, and is used to compress and heat the gas.

[0025] Preferably, the compressed gas heating device comprises:

[0026] A tank body, wherein a heat storage chamber is provided in the tank body, an air storage cavity is formed between the inner wall of the tank body and the heat storage chamber, the air storage cavity is communicated with the air inlet end of the tank body, and the heat storage chamber is filled with a phase change heat storage material;

[0027] A heater is provided in the heat storage chamber and is used to heat the phase change thermal storage material;

[0028] The heat exchanger is arranged in the heat storage chamber, the inlet end of the heat exchanger is connected to the gas storage cavity, and the outlet end of the heat exchanger extends outside the tank body. When the gas passes through the heat exchanger, it is heated by the phase change heat storage material.

[0029] Preferably, the tank body is a heat-insulating tank body.

[0030] Preferably, the device further comprises:

[0031] An air compressor, wherein the air inlet end of the air compressor is connected to the air supply pipeline, and the air outlet end of the air compressor is connected to the air inlet end of the tank body, and is used for compressing gas.

[0032] Preferably, the device further comprises:

[0033] The new energy power generation unit is electrically connected to the air compressor and the heater respectively, and is used to supply electricity to the air compressor and the heater.

[0034] Preferably, the device further comprises:

[0035] A power distribution control unit, the power distribution control unit comprising a controller, the controller being electrically connected to the new energy power generation unit via a cable;

[0036] The air compressor has a control switch, and the control switch is used to control the opening and closing of the air compressor;

[0037] The heater has a power electronic switch, and the power electronic switch is used to control the opening and closing of the heater and adjust the load power of the heater;

[0038] The controller is electrically connected to the control switch and the power electronic switch through cables.

[0039] Preferably, the following control method is used to control the operation of the compressed gas heating device, including:

[0040] Obtaining the output power of the new energy power generation unit and the target input power of the air compressor;

[0041] When the output power of the new energy power generation unit is lower than the minimum value of the allowable input power range of the air compressor and is greater than or equal to the minimum load power of the heater, the control switch is controlled to be closed and the power electronic switch is opened to match the load power of the heater with the output power of the new energy power generation unit;

[0042] When the output power of the new energy power generation unit is within the allowable range of the input power of the air compressor, the control switch is controlled to be turned on, the power electronic switch is controlled to be turned off, and the air compressor compresses the gas into the tank body; after the pressure in the tank body is greater than or equal to the upper limit pressure of the tank body, the control switch is controlled to be turned off, and the power electronic switch is controlled to be turned on, so that the load power of the heater matches the load power of the new energy power generation unit;

[0043] When the output power of the new energy power generation unit is greater than the maximum value of the allowable input power range of the air compressor, the control switch is controlled to open and the power electronic switch is turned on so that the sum of the load power of the air compressor and the load power of the heater matches the output power of the new energy power generation unit; after the pressure in the tank body is greater than or equal to the upper limit pressure of the tank body, the control switch is controlled to close.

[0044] The above technical solution has at least the following beneficial effects:

[0045] The oil transportation system using this solution can reduce the emission of fossil fuels during oil transportation, reduce damage to fragile ecosystems, and reduce construction and operation and maintenance costs. In addition, the method of forming an air film between the inner wall of the oil pipeline and the crude oil effectively reduces the viscosity between the crude oil and the inner wall of the oil pipeline. In combination with air bags to heat and pressurize the oil pipeline, the pressure loss of the oil pipeline is compensated, further improving the crude oil transportation capacity.

[0046] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following detailed description, they are used to explain the embodiments of the present application but do not constitute a limitation on the embodiments of the present application. In the accompanying drawings:

[0048] FIG1 is a schematic structural diagram of an embodiment of a compressed gas heating device provided by the present application;

[0049] FIG2 is a schematic structural diagram of an embodiment of the connection of a power distribution control unit provided by the present application;

[0050] FIG3 is a schematic structural diagram of an embodiment of an oil delivery system provided by the present application;

[0051] FIG4 is a schematic structural diagram of an embodiment of an oil pipeline provided by the present application;

[0052] FIG5 is a schematic structural diagram of another embodiment of the oil pipeline provided by the present application;

[0053] FIG6 is a schematic diagram of the structure of the airbag of the present application when inflated;

[0054] FIG7 is a schematic structural diagram of the ventilation tank body provided in this application.

[0055] Description of Reference Numerals

[0056] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0057] The following will be combined with the 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.

[0058] 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 status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0059] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0060] Most existing compressed gas heating devices use heaters to directly heat the compressed gas in the tank. The heaters do not heat the compressed gas uniformly and are unable to store heat. During the compressed gas heating process, heat loss is large and energy consumption is high, which is not conducive to reducing carbon emissions and lowering costs.

[0061] In view of this, the present application proposes a compressed gas heating device that can store heat, minimize heat loss, and use low energy consumption, which helps reduce carbon emissions and lower costs. Furthermore, the compressed gas is heated more evenly and effectively. Figures 1 to 7 illustrate embodiments of the compressed gas heating device provided by the present application.

[0062] In the embodiment of the present application, please refer to Figure 1, the compressed gas heating device 100 includes an air compressor 1, a tank body 2, a heat exchanger 4 and a heater 5; the air inlet end of the air compressor 1 is connected to the air supply pipe; the tank body 2 is located on the outside of the air compressor 1, and a heat storage chamber 3 is formed in the tank body 2, and the heat storage chamber 3 is filled with a phase change heat storage material 31. An air storage cavity 21 is also formed between the inner wall of the tank body 2 and the heat storage chamber 3, and the air outlet end of the air compressor 1 is connected to the air storage cavity 21; the heat exchanger 4 is located in the heat storage chamber 3, and the inlet end of the heat exchanger 4 is connected to the air storage cavity 21, and the outlet end of the heat exchanger 4 extends to the outside of the tank body 2; the heater 5 is located in the heat storage chamber 3, and is used to heat the phase change heat storage material 31.

[0063] In the technical solution of the present application, the gas is compressed by the air compressor 1 and enters the gas storage chamber 21 and is stored in the gas storage chamber 21. The heater 5 heats the phase change thermal storage material 31. The heat generated by the heater 5 is absorbed and stored by the phase change thermal storage material 31. The compressed gas in the gas storage chamber 21 enters the heat exchanger 4 from the inlet end of the heat exchanger 4, fully exchanges heat with the phase change thermal storage material 31, absorbs the heat of the phase change thermal storage material 31, and the compressed gas in the heat exchanger 4 is heated to form heated high-pressure gas, which is then discharged from the heat exchanger 4. The compressed gas is discharged from the outlet end of the heat exchanger 4; the compressed gas heating device 100 of the present application heats the phase change heat storage material 31, and the compressed gas then exchanges heat with the phase change heat storage material 31 through the heat exchanger 4 placed in the phase change heat storage material 31 to heat the compressed gas, which can store heat, has small heat loss, low energy consumption, and is conducive to reducing carbon emissions and costs. At the same time, the compressed gas is heated more evenly and has a better heating effect. In addition, the compressed gas in the gas storage cavity 21 can play a role in thermal insulation for the heat storage chamber 3.

[0064] In some embodiments of the present application, the heat exchanger 4 is located above the heater 5. The heat generated by the heater 5 goes upwards. With this arrangement, the heat exchange effect of the heat exchanger 4 is better, which can improve the heating effect of the compressed gas.

[0065] In some embodiments of the present application, the inlet end of the heat exchanger 4 extends vertically upward and passes through the top of the heat storage chamber 3 and then communicates with the air storage cavity 21; and / or,

[0066] The outlet end of the heat exchanger 4 extends vertically downward and passes through the bottom of the heat storage chamber 3 and the bottom of the tank body 2 in sequence.

[0067] The inlet end of the heat exchanger 4 extends vertically upward, passes through the top of the heat storage chamber 3, and then communicates with the gas storage cavity 21. This can extend the time for the compressed gas in the heat exchanger 4 to exchange heat with the phase-change thermal storage material 31, thereby improving the heating effect of the compressed gas. The outlet end of the heat exchanger 4 extends vertically downward, passing through the bottom of the heat storage chamber 3 and the bottom of the tank body 2 in sequence. This can also extend the time for the compressed gas in the heat exchanger 4 to exchange heat with the phase-change thermal storage material 31, thereby improving the heating effect of the compressed gas. The inlet end of the heat exchanger 4 extends vertically upward, passes through the top of the heat storage chamber 3, and then communicates with the gas storage cavity 21. The outlet end of the heat exchanger 4 extends vertically downward, passing through the bottom of the heat storage chamber 3 and the bottom of the tank body 2 in sequence, thereby further improving the heating effect of the compressed gas. At the same time, the compressed gas flows from top to bottom through the heat exchanger 4, forming convection with the heat, which helps to ensure the heating effect of the compressed gas.

[0068] In some embodiments of the present application, the tank body 2 is an insulated tank body 2, which can keep the compressed gas in the tank body 2 and the phase change heat storage material 31 warm, which is beneficial to ensuring the heat storage effect and the heating effect of the compressed gas.

[0069] Some embodiments of the present application further include a new energy power generation unit 6, which is positioned around the tank 2 and electrically connected to the air compressor 1 and the heater 5, respectively. Powering the air compressor 1 and the heater 5 through the new energy power generation unit 6 can reduce carbon emissions by utilizing new energy. It is understood that the new energy power generation unit 6 may include a wind turbine, a photovoltaic generator, or the like.

[0070] In some embodiments of the present application, the heater 5 is a power-adjustable heater 5, which has an adaptive input power function and adjusts the load power by changing the input power; the load power of the power-adjustable heater 5 can be adjusted according to the output power of the new energy power generation unit 6 to regulate the heating temperature of the power-adjustable heater 5, which can make full use of new energy and store heat in the phase change thermal storage material 31, thereby improving the utilization rate of new energy.

[0071] In some embodiments of the present application, the air compressor 1 is a DC air compressor 1 , which can directly utilize the electricity output by the new energy power generation unit 6 , thereby reducing the use of an inverter and helping to reduce costs.

[0072] In some embodiments of the present application, referring to FIG. 2 , a power distribution control unit 7 is further included. The power distribution control unit 7 includes a controller, and the controller is electrically connected to the new energy power generation unit 6 via a cable;

[0073] The DC air compressor 1 has a control switch, which controls the on and off of the DC air compressor 1; the power adjustable heater 5 has a power electronic switch, which controls the on and off of the power adjustable heater 5 and adjusts the load power of the power adjustable heater 5;

[0074] The controller is connected to the control switch and the power electronic switch through cables respectively.

[0075] The controller can respectively control the opening and closing of the DC air compressor 1, the opening and closing of the power-adjustable heater 5, and the size of the load power; through the controller, the opening and closing of the DC air compressor 1, the opening and closing of the power-adjustable heater 5, and the size of the load power can be coordinated and controlled according to parameters such as the output power of the new energy power generation unit 6, which can make full use of new energy and further improve the utilization rate of new energy.

[0076] This application also provides a control method for a compressed gas heating device 100. Based on the compressed gas heating device 100 described above, the specific structure of the compressed gas heating device 100 is shown in Figures 1 and 2. It is understood that since the compressed gas heating device 100 described in this application adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be detailed here.

[0077] The control method of the compressed gas heating device 100 includes:

[0078] Obtaining the output power of the new energy power generation unit 6 and the target input power of the DC air compressor 1;

[0079] When the output power of the new energy power generation unit 6 is lower than the minimum value of the input power allowable range of the DC air compressor 1 and is greater than or equal to the minimum load power of the power adjustable heater 5, the control switch is controlled to be closed and the power electronic switch is opened, so that the load power of the power adjustable heater 5 matches the output power of the new energy power generation unit 6;

[0080] When the output power of the new energy power generation unit 6 is within the allowable input power range of the DC air compressor 1, the control switch is controlled to be turned on, the power electronic switch is controlled to be turned off, and the DC air compressor 1 compresses the gas into the tank body 2; after the pressure in the tank body 2 is greater than or equal to the upper limit pressure of the tank body 2, the control switch is controlled to be turned off, and the power electronic switch is controlled to be turned on, so that the load power of the power adjustable heater 5 matches the load power of the new energy power generation unit 6;

[0081] When the output power of the new energy power generation unit 6 is greater than the maximum value of the allowable input power range of the DC air compressor 1, the control switch is controlled to be turned on, and the power electronic switch is turned on, so that the sum of the load power of the DC air compressor 1 and the load power of the power adjustable heater 5 matches the output power of the new energy power generation unit 6; after the pressure in the tank body 2 is greater than or equal to the upper limit pressure of the tank body 2, the control switch is controlled to be closed.

[0082] By adopting the above control method, the sum of the load power of the DC air compressor 1 and the load power of the power adjustable heater 5 is made equal to the maximum output power point of the current new energy power generation unit 6, so as to achieve the maximum output power tracking of the new energy power generation unit 6; the control method of the compressed gas heating device 100 is optimized to maximize the utilization of new energy; at the same time, the heat storage of new energy can also effectively reduce the impact of the fluctuation of new energy power generation on the supply of heated high-pressure gas.

[0083] This application also proposes an oil transportation system, as shown in Figure 3 , which includes an oil transportation pipeline 200 and the compressed gas heating device 100. The specific structure of the compressed gas heating device 100 is shown in Figures 1 and 2 . It is understood that since the compressed gas heating device 100 described in this application adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be detailed here.

[0084] 4 to 6 , the oil pipeline 200 includes a first pipeline 201, a second pipeline and an air bag 207 unit. The first pipeline 201 is used to transport crude oil 202. The second pipeline is sleeved outside the first pipeline 201, and a gas transmission channel 206 is formed between the second pipeline and the first pipeline 201. The air bag 207 unit includes an air bag 207 and a three-way valve 208. The air bag 207 is provided on the inner side wall of the first pipeline 201 and has an air charging and discharging port. The three-way valve 208 is embedded in the first pipeline 201 and has a first port 209, a second port 210 and a third port 211. The first port 209 is in communication with the gas transmission channel 206, the second port 210 is in communication with the air charging and discharging port, and the third port 211 is in communication with the first pipeline 201. The outlet end of the heat exchanger 4 of the compressed gas heating device 100 is in communication with the gas transmission channel 206.

[0085] The first pipeline 201 carries the heated crude oil 202, and the gas delivery channel 206 carries the compressed gas heated by the compressed gas heating device 100. The temperature and pressure of the gas in the gas delivery channel 206 are higher than the temperature and pressure of the crude oil 202 in the first pipeline 201. When the first port 209 of the three-way valve 208 is connected to the second port 210 and the third port 211 is closed, since the pressure of the gas in the gas delivery channel 206 is higher than the pressure of the crude oil 202 in the first channel, the high-temperature and high-pressure gas in the gas delivery channel 206 will pass through the three-way valve 208 and enter the airbag 207 from the second port 210, inflating the airbag 207. The inflated airbag 207 can heat the crude oil 202 in the first pipeline 201. 02 heating and pressurizing; when the first port 209 of the three-way valve 208 is closed and the second port 210 is connected to the third port 211, under the pressure of the crude oil 202 in the first pipeline 201, the high-temperature and high-pressure gas in the airbag 207 will pass through the three-way valve 208 and be discharged through the third port 211 to the space between the inner wall of the first pipeline 201 and the crude oil 202. 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 202, but also supplementally heat the crude oil 202. During the process of transporting the crude oil 202, the inflation and deflation of the airbag 207 can heat and pressurize the crude oil 202, and reduce the viscous resistance between the inner wall of the pipeline and the crude oil 202, thereby effectively improving the transportation capacity of the crude oil 202.

[0086] The compressed gas heating device 100 is used in coordination with the oil pipeline 200 , and the heated compressed gas is transported into the oil pipeline by the compressed gas heating device 100 , thereby improving the transport capacity of the crude oil 202 .

[0087] It is understood that the gas introduced into the compressed gas heating device 100 can be natural gas produced during mining, thereby being able to transport high-temperature and high-pressure natural gas into the transmission pipeline. Transporting natural gas while transporting crude oil 202 can improve the transportation capacity of the oil pipeline 200. The phase-change thermal storage material 31 can be determined based on the environment, the target flow rate required by the crude oil 202, and the historical highest and lowest temperatures through mathematical model simulation to determine the optimal crude oil 202 temperature, and then determine the phase-change thermal storage material 31 accordingly. Depending on the length of the oil pipeline 200, the airbag 207 unit can be provided in multiple units, with multiple airbag 207 units spaced apart along the length of the first pipeline 201 to ensure the transportation capacity of the crude oil 202. The oil pipeline of the oil transportation system is generally very long and can be installed and configured by multiple oil pipelines 200 based on conditions such as distance, environment, and pressurization requirements.

[0088] In some embodiments of the present application, the airbag 207 is disposed around the inner wall of the first pipe 201. The airbag 207 is annular in structure. When inflated, the airbag 207 heats and pressurizes the crude oil 202 in the first pipe 201 in the circumferential direction, which makes the heating and pressurization more uniform and more effective.

[0089] In some embodiments of the present application, the airbag 207 unit further includes a receiving slot 212, which is fixedly mounted on the inner sidewall of the first pipe 201, with a slot facing the inner side of the first pipe 201. The airbag 207 is bonded into the receiving slot 212. When the airbag 207 is inflated, the airbag 207 is pushed out of the receiving slot 212 under the action of high-temperature and high-pressure gas. The inflated airbag 207 heats and pressurizes the crude oil 202. When the airbag 207 is deflated, the airbag 207 contracts under the pressure of the crude oil 202 in the first pipe 201. The deflated airbag 207 contracts into the receiving slot 212. The receiving slot 212 is used to install and store the airbag 207, thereby protecting the airbag 207. It should be noted that, in some embodiments, the receiving tank 212 is annular in structure, and the airbag 207 is arranged in an annular manner in the receiving tank 212 , which improves the heating and pressurizing effect of the airbag 207 on the crude oil 202 while effectively protecting the airbag 207 .

[0090] Some embodiments of the present application further include a third pipe 213, which is sleeved outside the second pipe. An insulation layer 214 is disposed between the third pipe 213 and the second pipe. The insulation layer 214 may include an aerogel layer, a rubber layer, a sponge layer, or the like. The insulation layer 214 can insulate the gas within the gas transmission channel and the crude oil 202 within the first pipe 201. The third pipe 213 can effectively prevent damage to the insulation layer 214, protecting it while also providing a certain degree of insulation.

[0091] In some embodiments of the present application, the airbag 207 unit further includes a monitoring component, which includes at least one of a pressure sensor, a temperature sensor, and a flow sensor. Each of the pressure sensor, the temperature sensor, and the flow sensor is mounted on the inner wall of the first pipe 201 to respectively monitor the temperature, pressure, and flow rate within the first pipe 201. The monitoring component includes one, two, or three of the pressure sensor, the temperature sensor, and the flow rate. When the monitoring component includes all three, it can simultaneously monitor the temperature, pressure, and flow rate within the first pipe 201 and inflate and deflate the airbag 207 based on the monitoring results, thereby improving the transport capacity of the crude oil 202. It is understood that an integrated pressure, temperature, and flow sensor can be used to simultaneously monitor pressure, temperature, and flow rate, which has a simple structure and is easy to install.

[0092] In some embodiments of the present application, the three-way valve 208 is an electromagnetic three-way valve 208, and the monitoring assembly further includes a controller, which is disposed on the outer wall of the third conduit 213 and is electrically connected to the pressure sensor, the temperature sensor, the flow sensor, and the three-way valve 208. The controller has wireless or wired communication capabilities and controls the three-way valve 208 based on data collected from the pressure sensor, the temperature sensor, and the flow sensor, thereby simplifying operation and facilitating control.

[0093] In some embodiments of the present application, the monitoring assembly further includes a solar cell module 216 and / or an energy storage battery module, wherein the solar cell module 216 is provided on or around the outer wall of the third pipe 213, and the solar cell module 216 is electrically connected to the controller, the pressure sensor, the temperature sensor, the flow sensor, and the three-way valve 208 respectively; and / or,

[0094] The energy storage battery module is disposed on the outer side wall of the third pipe 213 , 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 208 , respectively.

[0095] The solar cell module 216 can use solar energy to power the controller, the pressure sensor, the temperature sensor, the flow sensor and the three-way valve 208, making full use of solar energy and helping to reduce carbon emissions; the solar cell module 216 is installed on the outer wall or periphery of the oil pipeline 200, and the power required by a monitoring component is very small, generally on the order of tens of watts, and does not occupy the surrounding area; it uses small-scale new energy power generation, has low requirements for installation area, and has a wide range of applications.

[0096] The energy storage battery module supplies power to the controller, the pressure sensor, the temperature sensor, the flow sensor and the three-way valve 208; it can be understood that the controller and the energy storage battery module can be installed simultaneously in a control box 215, which is convenient for installation and serves to protect the controller and the energy storage battery module.

[0097] When the monitoring component includes both a solar cell module 216 and an energy storage battery module, the solar cell module 216 can supply power to the energy storage battery module, and the energy storage battery module stores electricity. When the solar cell module 216 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 208, thereby making full use of solar energy, reducing carbon emissions, and ensuring electricity demand. It is understandable that the maximum configuration of the energy storage battery module is to ensure the energy storage capacity to supply power to the controller, the pressure sensor, the temperature sensor, the flow sensor and the three-way valve 208 during seasonal no-light hours.

[0098] In some embodiments of the present application, referring to FIG. 7 , a plurality of vent grooves 203 are formed on the inner sidewall of the first pipe 201. Each vent groove 203 is provided with a plurality of air holes 204. Each air hole 204 is used to connect the first pipe 201 with the gas transmission channel 206. High-temperature, high-pressure gas within the gas transmission channel 206 can enter the vent grooves 203 through the air holes 204, forming an air film 205 between the inner wall of the first pipe 201 and the crude oil 202. This effectively reduces the viscous resistance between the inner wall of the pipe and the crude oil 202, thereby improving the transport capacity of the crude oil 202. When the gas pressure is kept equal to the pressure of the crude oil 202, the crude oil 202 can seal the gas within the vent grooves 203, reducing the contact area between the crude oil 202 and the inner wall of the first pipe 201, thereby reducing the viscous resistance between the inner wall of the pipe and the crude oil 202, and improving the transport capacity of the crude oil 202. When the gas pressure is kept equal to that of the crude oil 202, the crude oil 202 can seal the gas within the vent grooves 203, reducing the contact area between the crude oil 202 and the inner wall of the first pipe 201, and further reducing the viscous resistance between the inner wall of the pipe and the crude oil 202, thereby improving the transport capacity of the crude oil 202.

[0099] The above description is only a preferred embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made based on the contents of the present application specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present application.

Claims

1. An oil delivery system, characterized in that: The system comprises: The first pipeline is used to transport crude oil; a second pipeline, which is sleeved outside the first pipeline and forms a gas transmission channel for transmitting gas with the first pipeline, wherein the temperature and pressure of the gas are greater than the temperature and pressure of the crude oil; A plurality of airbag units are arranged on the first pipeline at intervals along the extension direction of the first pipeline, each of the airbag units comprises an airbag and a three-way valve, the airbag is arranged on the inner wall of the first pipeline, the three-way valve is embedded in the pipe body of the first pipeline, the first port of the three-way valve is communicated with the gas transmission channel, the second port of the three-way valve is communicated with the charging and discharging port of the airbag, and the third port of the three-way valve is communicated with the first pipeline; When the first port and the second port of the three-way valve are connected and the third port is closed, the gas delivery channel inflates the air bag to heat the crude oil; When the second port and the third port of the three-way valve are connected and the first port is closed, the air bag exhausts air into the first pipeline to reduce the viscous resistance between the crude oil and the inner wall of the first pipeline and heat the crude oil.

2. The oil delivery system according to claim 1, characterized in that: The system further comprises: The third pipeline is sleeved outside the second pipeline, and a heat-insulating layer is arranged between the third pipeline and the second pipeline.

3. The oil delivery system according to claim 1, characterized in that: The three-way valve is an electromagnetic three-way valve; The airbag unit also includes: A monitoring component is installed on the inner wall of the first pipeline, and the monitoring component includes a controller and at least one of a pressure sensor, a temperature sensor and a flow sensor; the controller is connected to at least one of the pressure sensor, the temperature sensor and the flow sensor and a three-way valve, and is used to control the three-way valve based on at least one data of the pressure sensor, the temperature sensor and the flow sensor.

4. The oil delivery system according to claim 3, characterized in that: The monitoring component also includes: A solar cell module and / or an energy storage battery module is arranged on the outer wall of the third pipe, and the solar cell module and / or the energy storage battery module is connected to the monitoring component and the three-way valve to supply power to the detection component and the three-way valve; The solar cell module is also used to charge the energy storage battery module.

5. The oil delivery system according to claim 1, characterized in that: The corresponding positions on the inner wall of the first pipe where the airbags are installed are all provided with receiving grooves, and the airbags are arranged in the receiving grooves.

6. The oil delivery system according to claim 5, characterized in that: The storage tank body is an annular structure.

7. The oil delivery system according to claim 1, characterized in that: A plurality of ventilation grooves are arranged on the inner wall of the first pipeline, and a plurality of air holes are arranged on the ventilation grooves. The gas in the gas transmission channel enters the ventilation grooves through the air holes, and forms an air film between the inner wall of the first pipeline and the crude oil, so as to reduce the viscous resistance between the inner wall of the first pipeline and the crude oil.

8. The oil delivery system according to any one of claims 1 to 7, characterized in that: The system further comprises: A compressed gas heating device, wherein the gas outlet end of the compressed gas heating device is connected to the gas pipeline, and the gas outlet end of the compressed gas heating device is communicated with the gas transmission channel, and is used to compress and heat the gas.

9. The oil delivery system according to claim 8, characterized in that: The compressed gas heating device comprises: A tank body, wherein a heat storage chamber is arranged in the tank body, an air storage cavity is formed between the inner wall of the tank body and the heat storage chamber, the air storage cavity is connected to the air inlet end of the tank body, and the heat storage chamber is filled with a phase change heat storage material; A heater, disposed in the heat storage chamber, for heating the phase change heat storage material; The heat exchanger is arranged in the heat storage chamber, the inlet end of the heat exchanger is connected to the gas storage cavity, and the outlet end of the heat exchanger extends outside the tank body. When the gas passes through the heat exchanger, it is heated by the phase change heat storage material.

10. The oil delivery system according to claim 9, characterized in that: The tank body is a heat-insulating tank body.

11. The oil delivery system according to claim 9, characterized in that: The device also includes: An air compressor, wherein the air inlet end of the air compressor is connected to the air supply pipeline, and the air outlet end of the air compressor is connected to the air inlet end of the tank body, and is used for compressing gas.

12. The oil delivery system according to claim 11, characterized in that: The device also includes: The new energy power generation unit is electrically connected to the air compressor and the heater respectively, and is used to supply electricity to the air compressor and the heater.

13. The oil delivery system according to claim 12, characterized in that: The device also includes: A power distribution control unit, the power distribution control unit comprising a controller, the controller being electrically connected to the new energy power generation unit via a cable; The air compressor has a control switch, and the control switch is used to control the opening and closing of the air compressor; The heater has a power electronic switch, and the power electronic switch is used to control the opening and closing of the heater and adjust the load power of the heater; The controller is electrically connected to the control switch and the power electronic switch through cables respectively.

14. The oil delivery system according to claim 13, characterized in that: The following control method is used to control the operation of the compressed gas heating device, including: Obtaining the output power of the new energy power generation unit and the target input power of the air compressor; When the output power of the new energy power generation unit is lower than the minimum allowable range of the input power of the air compressor and is greater than or equal to the minimum load power of the heater, the control switch is controlled to be closed and the power electronic switch is turned on, so that the load power of the heater matches the output power of the new energy power generation unit; When the output power of the new energy power generation unit is within the allowable range of the input power of the air compressor, the control switch is controlled to be turned on, the power electronic switch is controlled to be turned off, and the air compressor compresses the gas into the tank body; after the pressure in the tank body is greater than or equal to the upper limit pressure of the tank body, the control switch is controlled to be turned off, and the power electronic switch is controlled to be turned on, so that the load power of the heater matches the load power of the new energy power generation unit; When the output power of the new energy power generation unit is greater than the maximum value of the allowable input power range of the air compressor, the control switch is controlled to open and the power electronic switch is controlled to open so that the sum of the load power of the air compressor and the load power of the heater matches the output power of the new energy power generation unit; after the pressure in the tank body is greater than or equal to the upper limit pressure of the tank body, the control switch is controlled to close.

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