Phase change heat storage system based on crude oil transportation

Abstract

The utility model relates to the technical field of crude oil heating, in particular to a phase change heat storage system based on crude oil transportation, which comprises a box body, a support base, a heat storage device and a heat storage box, the support base is fixedly connected to the bottom of the box body, the heat storage device and the heat storage box are both arranged in the box body, and the heat storage device and the heat storage box are mutually connected through a pipeline; the heat storage device comprises a liquid storage tank, a main heater, an auxiliary heater, a circulating pump, a heat exchanger, a reversing three-way valve and a heat exchanger three-way valve. The liquid storage tank is fixedly connected to the upper end of the supporting base. The system has the beneficial effects of high-efficiency heat storage capacity, flexible regulation and control of heat supply temperature, multiple heat source supply modes, high-efficiency energy utilization, stable and reliable system and the like, can provide a reliable and high-efficiency heat supply solution, overcomes the defects in the prior art, and is suitable for large-scale popularization and application. The problems of high energy-saving cost and major potential safety hazards existing in heating of crude oil extracted from a wellhead in the prior art can be effectively solved, and the energy consumption and the cost of crude oil heating are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of crude oil heating, in particular to a phase change heat storage system based on crude oil transportation. Background Art

[0002] At present, crude oil is a dark brown viscous oily liquid with green fluorescence and a special smell. It is a mixture of various liquid hydrocarbons such as alkanes, cycloalkanes, aromatic hydrocarbons and olefins. Its main components are carbon and hydrogen, as well as small amounts of sulfur, oxygen, nitrogen and trace amounts of phosphorus, arsenic, potassium, sodium, calcium, magnesium, nickel, iron, vanadium and other elements. The specific gravity is 0.78-0.97, the molecular weight is 280-300, and the freezing point is -50-24°C. During the transportation process of crude oil, the crude oil needs to be heated to prevent blockage of the oil pipeline. The generally required temperature is 45°C-75°C.

[0003] Currently, oilfield gas heaters are the primary equipment used to heat crude oil produced at the wellhead. Due to the complex composition of the gas, wellsite gas heaters have poor combustion performance, failing to meet environmental emission standards and polluting the surrounding air. Furthermore, these furnaces pose significant safety risks. Some oil wells have adopted electric heating technology. While this technology can achieve local emission reduction goals, it suffers from high energy consumption and electricity costs, making it difficult to achieve the long-term energy conservation goals of oilfield enterprises. Furthermore, it presents significant safety risks and high energy-saving costs.

[0004] Therefore, a phase change heat storage system based on crude oil transportation is needed to solve the above technical problems. Utility Model Content

[0005] The purpose of the present invention is to provide a phase change heat storage system based on crude oil transportation. The present invention has the beneficial effects of efficient heat storage capacity, flexible control of heating temperature, multiple heat source supply methods, efficient energy utilization and stable and reliable system. It can provide a reliable and efficient heating solution, overcome the shortcomings of the existing technology, and can effectively solve the problems of high energy-saving costs and major safety hazards in the existing wellhead crude oil heating, thereby reducing the energy consumption and cost of crude oil heating.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a phase change heat storage system based on crude oil transportation, comprising a box body, a support base, a heat storage device and a heat storage tank, wherein the support base is fixedly connected to the bottom of the box body, the heat storage device and the heat storage tank are both arranged inside the box body, and the heat storage device and the heat storage tank are interconnected by a pipeline;

[0007] The heat storage device includes a liquid storage tank, a main heater, an auxiliary heater, a circulation pump, a heat exchanger, a reversing three-way valve and a heat exchanger three-way valve. The liquid storage tank is fixedly connected to the upper end of the support base. The main heater and the heat storage tank are connected to each other through a return pipe B. A delivery pipeline K is connected to the bottom of the main heater, a heat source supply pipe is connected to the front end of the delivery pipeline K, a reversing three-way valve is connected to the delivery pipeline K, a return pipe A is connected to one end of the reversing three-way valve, and a control valve B is installed on the return pipe A;

[0008] The auxiliary heater is installed above the main heater, and a delivery pipeline I is connected to the bottom of the auxiliary heater. The delivery pipeline I is connected to the heat storage tank through the delivery pipeline B.

[0009] The heat exchanger is installed above the auxiliary heater, and the front end of the heat exchanger is connected to the crude oil discharge pipe and the crude oil inlet pipe respectively, and the upper end of the heat exchanger is connected to the delivery pipeline A and the delivery pipeline E respectively;

[0010] One side of the liquid storage tank is connected to a delivery pipeline C, on which a circulation pump and a liquid outlet filter are installed. One end of the delivery pipeline C is interconnected with a reversing three-way valve. The other side of the liquid storage tank is connected to a drain pipe, on which a drain pipe valve is installed.

[0011] Furthermore, a return pipe is provided on the top of the liquid storage tank, and the return pipe and the liquid storage tank are interconnected. The delivery pipeline A and the delivery pipeline E are both interconnected with the return pipe. The heat exchanger three-way valve is connected to the return pipe, and a control valve A is installed on the return pipe. A delivery pipeline F and a delivery pipeline J are provided between the heat exchanger three-way valve and the auxiliary heater. The delivery pipeline J is located at the lower end of the delivery pipeline F. The delivery pipeline F and the delivery pipeline J are interconnected. One end of the delivery pipeline F is connected to the heat exchanger three-way valve, and one end of the delivery pipeline J is connected to the auxiliary heater.

[0012] Furthermore, the upper end of the support base is fixedly connected to a support stand A, and the crude oil discharge pipe and the crude oil inlet pipe are both fixedly connected to the support stand A through a limiting hoop.

[0013] Furthermore, the upper end of the support base is fixedly connected to a support stand B, and two main heaters are provided. The two main heaters are interconnected, and the two main heaters and the auxiliary heater are fixedly connected to the support stand B through a limiting hoop.

[0014] Furthermore, a handle is fixedly connected to the liquid storage tank, and a support base with a cross structure is fixedly connected to the bottom of the liquid storage tank. The support base is fixedly connected to the upper end of the support base by fixing bolts.

[0015] Furthermore, the upper end of the support base is fixedly connected to a support stand C, and the return pipe A and the heat source supply pipe are both fixedly connected to the support stand A through a limiting hoop.

[0016] Furthermore, door panels A and B are installed on the box body, and door panels A and B are arranged opposite to each other. One side of door panels A and B is hinged to the box body through a hinge. Rotating rods are installed on door panels A and B, and the ends of the rotating rods are rotatably connected to the box body, and a handle is fixedly connected to one side of the rotating rod.

[0017] Furthermore, the outer sleeve of the rotating rod is provided with a sleeve, and a fixing plate is integrally connected to the sleeve. The fixing plate and the door panels A and B are fixedly connected to each other, and the door panels A and B are both connected with a pressing plate for tightening the handle.

[0018] Furthermore, the upper end of the supporting frame B is fixedly connected to a bracket, and the heat exchanger is fixedly connected to the upper end of the bracket.

[0019] Furthermore, the upper end of the delivery pipeline C is connected to a fluid infusion tube, and the fluid infusion tube and the fluid storage tank are communicated with each other.

[0020] The advantages of the present invention are: the present invention provides a phase change heat storage system based on crude oil transportation, which has the following technical effects:

[0021] 1. Flexible heating temperature control: By controlling components such as the reversing three-way valve and circulating pump, the system can flexibly adjust the temperature and flow rate of the liquid to meet different heating needs. Users can transfer and adjust heat energy according to actual needs, improving heating comfort and efficiency.

[0022] 2. Multiple heat source supply methods: The system supports multiple heat source supply methods, such as solar collectors. When the external heat source reaches its utilization value, renewable energy such as solar energy can be used for heating; when the external heat source is insufficient, the heat energy in the heat storage tank can be returned to the main heater through the return pipeline to achieve stable and flexible heating.

[0023] 3. Efficient Energy Utilization: The system uses a heat exchanger to transfer heat between the guide fluid and the crude oil, transferring the heat from the guide fluid to the crude oil for heating. This method fully utilizes the heat energy in the guide fluid, improving energy utilization efficiency and reducing energy consumption.

[0024] 4. Stable and reliable system: The system utilizes a support base, support stand, and other structures for fixing and supporting, ensuring stable working conditions between components. Furthermore, the system is equipped with control valves and limit clamps to achieve precise control of fluid flow and heat transfer processes, ensuring system stability and reliability.

[0025] In summary, the phase change heat storage system has the beneficial effects of efficient heat storage capacity, flexible control of heating temperature, multiple heat source supply methods, efficient energy utilization and stable and reliable system. It can provide a reliable and efficient heating solution, overcome the shortcomings of existing technologies, and can effectively solve the problems of high energy-saving costs and major safety hazards in the existing wellhead crude oil heating, thereby reducing the energy consumption and cost of crude oil heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0028] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0029] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure in another direction;

[0030] Figure 4 It is a partial enlarged structural schematic diagram of the utility model;

[0031] Figure 5 This is an enlarged structural diagram of the heat exchanger structure in the present utility model;

[0032] Figure 6 This is a rear view structural diagram of the utility model;

[0033] in:

[0034] 1. Box body; 2. Support base; 3. Door panel A;

[0035] 4. Door panel B; 5. Hinge; 6. Rotating rod;

[0036] 7. Handle; 8. Pressing piece; 9. Fixing piece;

[0037] 10. Sleeve; 11. Liquid storage tank; 12. Support base;

[0038] 13. Fixing bolt; 14. Handle; 15. Liquid return pipe;

[0039] 16. Control valve A; 17. Delivery pipeline A; 18. Heat exchanger three-way valve;

[0040] 19. Heat exchanger; 20. Fluid supply pipe; 21. Return pipe A;

[0041] 22. Control valve B; 23. Reversing three-way valve; 24. Heat storage tank;

[0042] 25. Crude oil discharge pipe; 26. Crude oil inlet pipe; 27. Support frame A;

[0043] 28. Limiting hoop; 29. Delivery pipe B; 30. Return pipe B;

[0044] 31. Heat source supply pipe; 32. Delivery pipeline C; 33. Circulation pump;

[0045] 34. Liquid outlet filter; 35. Main heater; 36. Support stand B;

[0046] 37. Delivery pipeline E; 38. Delivery pipeline F; 39. Bracket;

[0047] 40. Auxiliary heater; 41. Delivery pipeline G; 42. Delivery pipeline H;

[0048] 43. Delivery pipeline I; 44. Delivery pipeline J; 45. Liquid level gauge;

[0049] 46. Drain pipe; 47. Drain pipe valve; 48. Delivery pipeline K;

[0050] 49. Support stand C. DETAILED DESCRIPTION

[0051] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0052] In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. The terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Example 1:

[0054] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model. Figure 2 This is a schematic diagram of the internal structure of the utility model. Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure in another direction, Figure 4 This is a partial enlarged structural diagram of the utility model. Figure 5 This is an enlarged structural diagram of the heat exchanger structure in this utility model. Figure 6 This is a rear view structural diagram of the utility model, as shown in FIG. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A phase change heat storage system based on crude oil transportation is shown, comprising a box body 1, a support base 2, a heat storage device and a heat storage box 24, wherein the support base 2 is fixedly connected to the bottom of the box body 1, and the heat storage device and the heat storage box 24 are both arranged inside the box body 1. The utility model is provided with a door panel A3 and a door panel B4 on the box body 1, and the door panel A3 and the door panel B4 are arranged opposite to each other. One side of the door panel A3 and the door panel B4 are hinged to each other through a hinge 5, and a rotating rod 6 is installed on each of the door panels A3 and B4, and the end of the rotating rod 6 is rotatably connected to the box body 1, and a handle 7 is fixedly connected to one side of the rotating rod 6, and a sleeve 10 is provided on the outer sleeve of the rotating rod 6, and a fixing plate 9 is integrally connected to the sleeve 10, and the fixing plate 9 is fixedly connected to the door panels A3 and B4, and a pressing plate 8 for pressing the handle 7 is connected to the above-mentioned door panels A3 and B4.

[0055] The heat storage device and the heat storage tank 24 are connected to each other through a pipeline; the heat storage device in the present utility model includes a liquid storage tank 11, a main heater 35, an auxiliary heater 40, a circulating pump 33, a heat exchanger 19, a reversing three-way valve 23 and a heat exchanger three-way valve 18, the liquid storage tank 11 is fixedly connected to the upper end of the support base 2, a handle 14 is fixedly connected to the liquid storage tank 11, and a cross-structured support base 12 is fixedly connected to the bottom of the liquid storage tank 11, and the support base 12 is fixedly connected to the support base 2 by fixing bolts 13. At the upper end, the support base 12 plays a role in firmly supporting the liquid storage tank 11. The main heater 35 and the heat storage tank 24 are connected to each other through the return pipe B30. The heat storage tank 24 in the present invention adopts the heat storage tank 24 in the existing technology. An S-shaped elbow is provided inside the heat storage tank 24. The S-shaped elbow is coated with a phase change heat storage material. The liquid in the S-shaped elbow can be refluxed to the main heater 35 through the return pipe B30. The utility model is connected to a delivery pipeline K48 at the bottom of the main heater 35. The front end of the pipeline K48 is connected to the heat source supply pipe 31, and the reversing three-way valve 23 is connected to the delivery pipeline K48. When the external heat source reaches the utilization value (75℃~80℃), the port of the reversing three-way valve 23 is opened, and the external solar collector conveys the guided liquid through the heat source supply pipe 31 to the delivery pipeline K48. When the external heat source does not reach the utilization value, the other port on the reversing three-way valve 23 is opened to make the guided liquid in the delivery pipeline C32 flow into the delivery pipeline K48, and the guided liquid is conveyed to the delivery pipeline K48 through the delivery pipeline K48. In the two main heaters 35, one end of the reversing three-way valve 23 is connected to a return pipe A21. A support stand C49 is fixedly connected to the upper end of the support base 2. The return pipe A21 and the heat source supply pipe 31 are both fixedly connected to the support stand A27 via a limiting hoop 28. A control valve B22 is installed on the return pipe A21. The return pipe A21 in the utility model is interconnected with an external solar thermal collector. The liquid in the delivery pipeline K48 can be returned to the external solar thermal collector through the return pipe A21.

[0056] The auxiliary heater 40 in the present invention is installed above the main heater 35. The auxiliary heater 40 is an electric heater and plays an auxiliary heating role. A delivery pipeline I43 is connected to the bottom of the auxiliary heater 40. The delivery pipeline I43 is interconnected with the heat storage tank 24 through the delivery pipeline B29. The heated liquid can be delivered to the heat storage tank 24 through the delivery pipeline I43 and the delivery pipeline B29.

[0057] The heat exchanger 19 in the present invention is installed above the auxiliary heater 40. A crude oil discharge pipe 25 and a crude oil inlet pipe 26 are respectively connected to the front end of the heat exchanger 19. Crude oil can enter the heat exchanger 19 through the crude oil inlet pipe 26 for heating. The heated crude oil is discharged through the crude oil discharge pipe 25. The heat exchanger 19 in the present invention adopts the heat exchanger 19 in the current existing technology for heat energy transfer. It can transfer heat in the guide liquid to the crude oil to achieve the purpose of heating. In the heat exchanger 19, the guide liquid and crude oil flow through different channels respectively, and the heat transfer effect is achieved through heat conduction on the inner wall of the heat exchanger 19. Through the heat transfer on the inner wall of the heat exchanger 19, the crude oil absorbs heat from the guide liquid side, and the temperature gradually increases. In the utility model, the upper end of the heat exchanger 19 is connected to the delivery pipeline A17 and the delivery pipeline E37, and a return liquid pipe 15 is provided on the top of the liquid storage tank 11. The return liquid pipe 15 and the liquid storage tank 11 are interconnected. The delivery pipeline A17 and the delivery pipeline E37 are both interconnected with the return liquid pipe 15. The heat exchanger three-way valve 18 is connected to the return liquid pipe 15, and a control valve A16 is installed on the return liquid pipe 15. A delivery pipeline F38 and a delivery pipeline J44 are provided between the heat exchanger three-way valve 18 and the auxiliary heater 40. The delivery pipeline J44 is located at the lower end of the delivery pipeline F38, and the delivery pipeline F38 and the delivery pipeline J44 are interconnected. The delivery pipe F38 is connected to the heat exchanger three-way valve 18 at one end, and the delivery pipe J44 is connected to the auxiliary heater 40 at one end. The liquid enters the heat exchanger three-way valve 18 from the delivery pipe J44 connected to the auxiliary heater 40. The heat exchanger three-way valve 18 determines whether the temperature measured at the crude oil inlet and outlet reaches the set required temperature. If the temperature is not reached, the port of the heat exchanger three-way valve 18 is opened to allow the liquid to pass through the delivery pipe E37 and enter the heat medium inlet of the heat exchanger 19. After heat exchange in the heat exchanger 19, the liquid can be returned to the liquid storage tank 11 through the delivery pipe A17 and the return pipe 15. If the temperature measured at the crude oil inlet and outlet reaches the set temperature, the heat exchanger three-way valve 18 is switched to allow the liquid to pass from the auxiliary heater 40 through the delivery pipe F38 and the delivery pipe J44 and enter the three-way valve. The liquid is then returned to the liquid storage tank 11 through the return pipe to circulate and preserve heat.

[0058] The utility model is connected to a delivery pipe C32 on one side of the liquid storage tank 11, and a circulation pump 33 and a liquid outlet filter 34 are installed on the delivery pipe C32. One end of the delivery pipe C32 is connected to the reversing three-way valve 23. The other side of the liquid storage tank 11 is connected to a drain pipe 46, and a drain pipe valve 47 is installed on the drain pipe 46. The utility model is fixedly connected to a support stand A27 at the upper end of the support base 2. The crude oil discharge pipe 25 and the crude oil inlet pipe 26 are fixedly connected to each other through a limit hoop 28. On the support stand A27, the crude oil discharge pipe 25 and the crude oil inlet pipe 26 are supported by the support stand A27. A support stand B36 is fixedly connected to the upper end of the support base 2. Two main heaters 35 are provided, and the two main heaters 35 are connected to each other. The two main heaters 35 and the auxiliary heater 40 are fixedly connected to the support stand B36 through a limiting hoop 28. A bracket 39 is fixedly connected to the upper end of the support stand B36. The bracket 39 is used to fix the heat exchanger 19.

[0059] Working Principle: Initial state: The system is in standby mode with all valves closed. The heat storage tank 24 in the heat storage device is filled with phase change heat storage material, the auxiliary heater 40 and the main heater 35 are not working, and the circulation pump 33 is stopped.

[0060] Heating process:

[0061] a. External heat source supply: When the external heat source reaches its utilization value (for example, 75°C to 80°C), the port of the reversing three-way valve 23 is opened, and the guide liquid is transported through the heat source supply pipe 31 to the delivery pipeline K48 through the external solar collector.

[0062] b. Heating by the main heater 35: The liquid is guided from the delivery pipeline K48 into the two main heaters 35, and heat is exchanged with the crude oil in the main heater 35, causing the crude oil temperature to gradually increase.

[0063] c. Auxiliary heater 40 heating: If the external heat source does not reach the utilization value, open the other port of the reversing three-way valve 23, so that the guide liquid flows from the delivery pipeline C32 into the delivery pipeline K48 and is heated by the auxiliary heater 40.

[0064] d. Liquid return: After being heated, the liquid returns to the liquid storage tank 11 through the delivery pipeline A17 and the return pipe 15, circulating to preserve heat.

[0065] Heat storage process:

[0066] a. Phase change thermal storage material absorbs heat: In the thermal storage tank 24, the heat in the guide liquid is transferred to the phase change thermal storage material through the heat exchanger 19, causing it to undergo phase change and absorb a large amount of heat to achieve heat storage.

[0067] b. Liquid return: After heat exchange, the liquid can be returned to the liquid storage tank 11 through the delivery pipeline A17 and the return pipe 15 to circulate and preserve heat.

[0068] Release heat energy:

[0069] a. System heat energy release: When heat energy needs to be released, open the heat exchanger three-way valve 18, guide the liquid from the auxiliary heater 40 through the delivery pipeline F38 and the delivery pipeline J44 into the three-way valve, and then return to the liquid storage tank 11 through the return pipe.

[0070] b. Crude oil heating: Crude oil enters the heat exchanger 19 through the crude oil inlet pipe 26 and exchanges heat with the guide liquid in the heat exchanger 19, so that the heat in the guide liquid is transferred to the crude oil, completing the heating of the crude oil.

[0071] c. Crude oil discharge: The heated crude oil is discharged through the crude oil discharge pipe 25.

[0072] Through the above steps, the phase change thermal storage system achieves the collection, storage, and release of thermal energy. During the heating process, the guide liquid is heated by an external heat source, the main heater 35, and the auxiliary heater 40. Simultaneously, the guide liquid transfers heat to the phase change thermal storage material for heat storage. During the release process, the heat in the guide liquid is transferred to the crude oil via the heat exchanger 19, heating the crude oil and releasing the heat energy into the external environment. The entire system achieves the transfer and regulation of thermal energy through the connection of pipelines and the control of valves.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A phase change heat storage system based on crude oil transportation, comprising a box (1), a support base (2), a heat storage device and a heat storage tank (24), wherein the support base (2) is fixedly connected to the bottom of the box (1), the heat storage device and the heat storage tank (24) are both arranged inside the box (1), and the heat storage device and the heat storage tank (24) are connected to each other through a pipeline; Its characteristics are: The heat storage device comprises a liquid storage tank (11), a main heater (35), an auxiliary heater (40), a circulation pump (33), a heat exchanger (19), a reversing three-way valve (23) and a heat exchanger three-way valve (18); the liquid storage tank (11) is fixedly connected to the upper end of the support base (2); the main heater (35) and the heat storage tank (24) are connected to each other through a return pipe B (30); a delivery pipeline K (48) is connected to the bottom of the main heater (35); a heat source supply pipe (31) is connected to the front end of the delivery pipeline K (48); a reversing three-way valve (23) is connected to the delivery pipeline K (48); a return pipe A (21) is connected to one end of the reversing three-way valve (23); and a control valve B (22) is installed on the return pipe A (21); The auxiliary heater (40) is installed above the main heater (35), and a delivery pipeline I (43) is connected to the bottom of the auxiliary heater (40), and the delivery pipeline I (43) is communicated with the heat storage tank (24) through the delivery pipeline B (29); The heat exchanger (19) is installed above the auxiliary heater (40), and the front end of the heat exchanger (19) is connected to the crude oil discharge pipe (25) and the crude oil inlet pipe (26), and the upper end of the heat exchanger (19) is connected to the delivery pipeline A (17) and the delivery pipeline E (37). One side of the liquid storage tank (11) is connected to a delivery pipeline C (32), on which a circulation pump (33) and a liquid outlet filter (34) are installed. One end of the delivery pipeline C (32) is connected to a reversing three-way valve (23). The other side of the liquid storage tank (11) is connected to a sewage pipe (46), on which a sewage pipe valve (47) is installed.

2. The phase change heat storage system based on crude oil transportation according to claim 1 is characterized in that: A liquid return pipe (15) is provided on the top of the liquid storage tank (11). The liquid return pipe (15) and the liquid storage tank (11) are in communication with each other. The delivery pipeline A (17) and the delivery pipeline E (37) are both in communication with the liquid return pipe (15). The heat exchanger three-way valve (18) is connected to the liquid return pipe (15). A control valve A (16) is installed on the liquid return pipe (15). A delivery pipeline F (38) and a delivery pipeline J (44) are provided between the heat exchanger three-way valve (18) and the auxiliary heater (40). The delivery pipeline J (44) is located at the lower end of the delivery pipeline F (38). The delivery pipeline F (38) and the delivery pipeline J (44) are in communication with each other. One end of the delivery pipeline F (38) is connected to the heat exchanger three-way valve (18), and one end of the delivery pipeline J (44) is connected to the auxiliary heater (40).

3. The phase change heat storage system based on crude oil transportation according to claim 1 is characterized in that: The upper end of the support base (2) is fixedly connected to a support stand A (27), and the crude oil discharge pipe (25) and the crude oil inlet pipe (26) are both fixedly connected to the support stand A (27) through a limiting hoop (28).

4. The phase change heat storage system based on crude oil transportation according to claim 1 is characterized in that: The upper end of the support base (2) is fixedly connected to a support stand B (36), two main heaters (35) are provided, the two main heaters (35) are interconnected, and the two main heaters (35) and the auxiliary heater (40) are fixedly connected to the support stand B (36) through a limiting hoop (28).

5. The phase change heat storage system based on crude oil transportation according to claim 1 is characterized in that: A handle (14) is fixedly connected to the liquid storage tank (11), and a cross-structured support base (12) is fixedly connected to the bottom of the liquid storage tank (11). The support base (12) is fixedly connected to the upper end of the support base (2) via fixing bolts (13).

6. The phase change heat storage system based on crude oil transportation according to claim 1 is characterized in that: The upper end of the support base (2) is fixedly connected to a support stand C (49), and the return pipe A (21) and the heat source supply pipe (31) are both fixedly connected to the support stand C (49) through a limiting hoop (28).

7. The phase change heat storage system based on crude oil transportation according to claim 1 is characterized in that: The box body (1) is provided with a door panel A (3) and a door panel B (4), which are arranged opposite to each other. One side of the door panel A (3) and the door panel B (4) are hinged to the box body (1) via a hinge (5). A rotating rod (6) is provided on each of the door panels A (3) and B (4), and the end of the rotating rod (6) is rotatably connected to the box body (1). A handle (7) is fixedly connected to one side of the rotating rod (6).

8. The phase change heat storage system based on crude oil transportation according to claim 7, characterized in that: The outer cover of the rotating rod (6) is provided with a sleeve (10), and a fixing plate (9) is integrally connected to the sleeve (10). The fixing plate (9) and the door panel A (3) and the door panel B (4) are fixedly connected to each other. A pressing plate (8) for pressing the handle (7) is connected to the door panel A (3) and the door panel B (4).

9. The phase change heat storage system based on crude oil transportation according to claim 4, characterized in that: The upper end of the support stand B (36) is fixedly connected to a bracket (39), and the heat exchanger (19) is fixedly connected to the upper end of the bracket (39).

10. The phase change heat storage system based on crude oil transportation according to claim 1, characterized in that: The upper end of the delivery pipeline C (32) is connected to a liquid infusion pipe (20), and the liquid infusion pipe (20) and the liquid storage tank (11) are in communication with each other.

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