Phase change heat storage system based on crude oil transportation

Abstract

The invention 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 efficient heat storage capacity, flexible regulation and control of the heat supply temperature, multiple heat source supply modes, efficient energy utilization, stable and reliable system and the like, a reliable and efficient heat supply solution can be provided, and the defects in the prior art are overcome; 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 present invention relates to the technical field of crude oil heating, and particularly relates to a phase change heat storage system based on crude oil transportation. Background Art

[0002] At present, crude oil is a viscous oily liquid that is dark brown with green fluorescence and has a special smell. It is a mixture of various liquid hydrocarbons such as alkanes, cycloalkanes, aromatic hydrocarbons, and alkenes. Its main components are carbon and hydrogen, and there are also small amounts of sulfur, oxygen, nitrogen, and trace amounts of phosphorus, arsenic, potassium, sodium, calcium, magnesium, nickel, iron, vanadium, etc. 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 of crude oil, it is necessary to raise the temperature of the crude oil to prevent blockage of the oil pipeline. Generally, the required temperature is 45°C - 75°C.

[0003] At present, the oilfield gas heating furnace is the main production equipment for heating the crude oil produced from the wellhead in oilfield production. Due to the relatively complex gas composition, the combustion performance of the gas furnace at the well site is poor, and it cannot meet the emission standards required by environmental protection, polluting the surrounding ambient air. Moreover, there are major safety hazards in the gas furnace at the well site. Electric heating technology has been adopted at some oil well sites. Although it can achieve the local emission reduction target, there are technical problems such as high energy consumption and high electricity cost, making it difficult to achieve the long-term energy-saving goal of sustainable development of oilfield enterprises, and there are technical problems of high energy-saving cost and major safety hazards.

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

[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 beneficial effects such as high heat storage capacity, flexible regulation of heating temperature, multiple heat source supply methods, high-efficiency energy utilization, and stable and reliable system. It can provide a reliable and efficient heating solution, overcome the deficiencies of the prior art, and can effectively solve the problems of high energy-saving cost and major safety hazards in heating the crude oil produced from the wellhead, 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, including a box body, a support base, a heat storage device, and a heat storage tank. The support base is fixedly connected to the bottom of the box body. Both the heat storage device and the heat storage tank are arranged inside the box body, and the heat storage device and the heat storage tank are connected to each other through pipelines;

[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 interconnected 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. A control valve B is installed on the return pipe A.

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

[0009] The heat exchanger is installed above the auxiliary heater. An oil discharge pipe and an oil inlet pipe are respectively connected to the front end of the heat exchanger. A delivery pipeline A and a delivery pipeline E are respectively connected to the upper end of the heat exchanger.

[0010] A delivery pipeline C is connected to one side of the liquid storage tank. A circulation pump and an outlet filter are installed on the delivery pipeline C. One end of the delivery pipeline C is connected to the reversing three-way valve. A sewage discharge pipe is connected to the other side of the liquid storage tank. A sewage discharge pipe valve is installed on the sewage discharge pipe.

[0011] Further, a return pipe is provided at the top of the liquid storage tank. The return pipe is interconnected with the liquid storage tank. 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. 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 interconnected with the heat exchanger three-way valve. One end of the delivery pipeline J is interconnected with the auxiliary heater.

[0012] Further, a support vertical frame A is fixedly connected to the upper end of the support base. The oil discharge pipe and the oil inlet pipe are both fixedly connected to the support vertical frame A through limit hoops.

[0013] Further, a support vertical frame B is fixedly connected to the upper end of the support base. There are two main heaters. The two main heaters are interconnected. The two main heaters and the auxiliary heater are all fixedly connected to the support vertical frame B through limit hoops.

[0014] Further, a handle is fixedly connected to the liquid storage tank. A cross-shaped support base 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 through fixing bolts.

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

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

[0017] Furthermore, a sleeve is sleeved outside the rotating rod. A fixing piece is integrally connected to the sleeve, and the fixing piece is fixedly connected to both the door panel A and the door panel B. Pressing pieces for pressing the handle are connected to both the above-mentioned door panel A and the door panel B.

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

[0019] Furthermore, a liquid supplement pipe is connected to the upper end of the conveying pipeline C, and the liquid supplement pipe is communicated with the liquid storage tank.

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

[0021] 1. Flexible regulation of heating temperature: The system can flexibly adjust the liquid guiding temperature and flow rate by controlling components such as the reversing three-way valve and the circulation pump to meet different heating requirements. Users can conduct heat energy transportation and regulation according to actual needs, improving the comfort and efficiency of heating.

[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 the 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 refluxed to the main heater through the reflux pipeline to achieve the stability and flexibility of heating.

[0023] 3. High-efficiency energy utilization: The system realizes the heat transfer between the liquid guiding medium and the crude oil through the heat exchanger, transferring the heat in the liquid guiding medium to the crude oil for heating. This method can make full use of the heat energy in the liquid guiding medium, improve the energy utilization efficiency, and reduce energy consumption.

[0024] 4. Stable and reliable system: The system is fixed and supported by structures such as a support base and support stands, enabling each component to maintain a stable working state. At the same time, the system is also provided with components such as control valves and limit hoops to achieve precise control of the fluid flow and heat transfer process, ensuring the stability and reliability of the system.

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

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 is a three-dimensional structure schematic diagram of the present invention;

[0028] Figure 2 is an internal structure schematic diagram of the present invention;

[0029] Figure 3 is Figure 2 a three-dimensional structure schematic diagram in another direction;

[0030] Figure 4 is a partial enlarged structure schematic diagram of the present invention;

[0031] Figure 5 is an enlarged structure schematic diagram of the heat exchanger structure in the present invention;

[0032] Figure 6 is a rear view structure schematic diagram of the present invention;

[0033] Wherein:

[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 bottom bracket;

[0038] 13, fixing bolt; 14, lifting handle; 15, return pipe;

[0039] 16, control valve A; 17, conveying pipeline A; 18, heat exchanger three-way valve;

[0040] 19. Heat exchanger; 20. Liquid 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 stand A;

[0043] 28. Limit hoop; 29. Delivery pipeline 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 implementation manners

[0051] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0052] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms

[0053] "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0054] In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance. The terms "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. 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.

[0055] Embodiment 1:

[0056] Figure 1 is a schematic three-dimensional structure diagram of the present invention, Figure 2 is a schematic internal structure diagram of the present invention, Figure 3 is Figure 2 a schematic three-dimensional structure diagram in another direction, Figure 4 is a schematic enlarged partial structure diagram of the present invention, Figure 5 is a schematic enlarged structure diagram of the heat exchanger structure in the present invention, Figure 6 is a schematic rear view structure diagram of the present invention, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 shown in a phase change heat storage system based on crude oil transportation, which includes a box body 1, a support base 2, a heat storage device and a heat storage tank 24. The support base 2 is fixedly connected to the bottom of the box body 1. The heat storage device and the heat storage tank 24 are both arranged inside the box body 1. In the present invention, a door panel A3 and a door panel B4 are installed on the box body 1. 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 is hinged to the box body 1 through a hinge 5. On the door panel A3 and the door panel B4, a rotating rod 6 is installed. The end of the rotating rod 6 is rotatably connected to the box body 1. On one side of the rotating rod 6, a handle 7 is fixedly connected. A sleeve 10 is sleeved outside the rotating rod 6. A fixing piece 9 is integrally connected to the sleeve 10. The fixing piece 9 is fixedly connected to the door panel A3 and the door panel B4. On the above-mentioned door panel A3 and the door panel B4, a pressing piece 8 for pressing the handle 7 is connected.

[0057] The heat storage device is interconnected with the heat storage tank 24 through pipelines. The heat storage device in the present invention includes 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. A handle 14 is fixedly connected to the liquid storage tank 11. A cross-shaped 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 through a fixing bolt 13. The support base 12 plays a role in stably supporting the liquid storage tank 11. The main heater 35 and the heat storage tank 24 are interconnected through a return pipe B30. The heat storage tank 24 in the present invention adopts the heat storage tank 24 in the current existing technology. An S-shaped bend pipe is arranged inside the heat storage tank 24, and a phase change heat storage material is coated outside the S-shaped bend pipe. The liquid in the S-shaped bend pipe can flow back to the main heater 35 through the return pipe B30. In the present invention, a delivery pipeline K48 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 K48. A reversing three-way valve 23 is connected to the delivery pipeline K48. When the external heat source reaches the utilization value (75°C - 80°C), the port of the reversing three-way valve 23 is opened, and the solar collector arranged outside conveys the liquid through the heat source supply pipe 31 into the delivery pipeline K48. When the external heat source does not reach the utilization value, another port on the reversing three-way valve 23 is opened, so that the liquid in the delivery pipeline C32 flows into the delivery pipeline K48. The liquid is conveyed to the two main heaters 35 through the delivery pipeline K48. 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 through a limit hoop 28. A control valve B22 is installed on the return pipe A21. The return pipe A21 in the present invention is connected to the solar heat collection device arranged outside. The liquid in the delivery pipeline K48 can flow back to the solar heat collection device arranged outside through the return pipe A21;

[0058] The auxiliary heater 40 in the present invention is installed above the main heater 35. The auxiliary heater 40 adopts 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 a delivery pipeline B29. The heated liquid can be conveyed to the heat storage tank 24 through the delivery pipeline I43 and the delivery pipeline B29;

[0059] In the present invention, the heat exchanger 19 is installed above the auxiliary heater 40. At the front end of the heat exchanger 19, a crude oil discharge pipe 25 and a crude oil inlet pipe 26 are respectively connected. Crude oil can enter the heat exchanger 19 through the crude oil inlet pipe 26 for heating, and 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, which is used for heat transfer and can transfer the heat in the guiding liquid to the crude oil to achieve the purpose of heating. In the heat exchanger 19, the guiding liquid and the crude oil flow through different channels respectively, and the heat transfer is realized through the 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 guiding liquid side and the temperature gradually rises. In the present invention, a delivery pipeline A17 and a delivery pipeline E37 are respectively connected to the upper end of the heat exchanger 19. A return liquid pipe 15 is arranged at the top of the liquid storage tank 11, and the return liquid pipe 15 is communicated with the liquid storage tank 11. The delivery pipeline A17 and the delivery pipeline E37 are both communicated 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 arranged 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 communicated with each other. One end of the delivery pipeline F38 is connected to the heat exchanger three-way valve 18, and one end of the delivery pipeline J44 is connected to the auxiliary heater 40. The guiding liquid enters the heat exchanger three-way valve 18 from the delivery pipeline 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 opens to allow the guiding liquid to enter the heat medium inlet of the heat exchanger 19 through the delivery pipeline E37. The guiding liquid after heat exchange in the heat exchanger 19 can flow back to the liquid storage tank 11 through the delivery pipeline A17 and the return liquid 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 guiding liquid to enter the three-way valve from the auxiliary heater 40 through the delivery pipeline F38 and the delivery pipeline J44, and the guiding liquid flows back to the liquid storage tank 11 through the return pipe to store the heat cyclically;

[0060] On one side of the liquid storage tank 11 of the present invention, a delivery pipeline C32 is connected. A circulation pump 33 and a liquid outlet filter 34 are installed on the delivery pipeline C32. One end of the delivery pipeline C32 is connected to a reversing three-way valve 23. On the other side of the liquid storage tank 11, a sewage discharge pipe 46 is connected, and a sewage discharge pipe valve 47 is installed on the sewage discharge pipe 46. On the upper end of the support base 2 of the present invention, a support vertical frame A27 is fixedly connected. Both the crude oil discharge pipe 25 and the crude oil inlet pipe 26 are fixedly connected to the support vertical frame A27 through a limit hoop 28. The support vertical frame A27 plays a role in supporting the crude oil discharge pipe 25 and the crude oil inlet pipe 26. On the upper end of the support base 2, a support vertical frame B36 is fixedly connected. There are two main heaters 35, and the two main heaters 35 are interconnected. Both the two main heaters 35 and the auxiliary heater 40 are fixedly connected to the support vertical frame B36 through a limit hoop 28. On the upper end of the support vertical frame B36, a bracket 39 is fixedly connected, and the bracket 39 is used to fix the heat exchanger 19.

[0061] Working principle: Initial state: The system is in the standby state, and all valves are closed. The phase change heat storage material is filled in the heat storage tank 24 of the heat storage device. The auxiliary heater 40 and the main heater 35 are not working, and the circulation pump 33 stops running.

[0062] Heating process:

[0063] a. External heat source supply: When the external heat source reaches the utilization value (for example, 75 °C to 80 °C), open the port of the reversing three-way valve 23, and the guiding liquid is transported to the delivery pipeline K48 through the heat source supply pipe 31 by the externally installed solar collector.

[0064] b. Main heater 35 heating: The guiding liquid enters the two main heaters 35 from the delivery pipeline K48, and exchanges heat with the crude oil in the main heater 35, so that the temperature of the crude oil gradually increases.

[0065] 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 guiding liquid flows from the delivery pipeline C32 into the delivery pipeline K48 and is heated by the auxiliary heater 40.

[0066] d. Guiding liquid reflux: After the guiding liquid is heated, it flows back to the liquid storage tank 11 through the delivery pipeline A17 and the return liquid pipe 15, and the heat is stored cyclically.

[0067] Heat storage process:

[0068] a. Phase change heat storage material heat absorption: In the heat storage tank 24, the heat in the guiding liquid is transferred to the phase change heat storage material through the heat exchanger 19, so that it undergoes a phase change and absorbs a large amount of heat, realizing heat storage.

[0069] b. Liquid guide reflux: The liquid guide after heat exchange can flow back to the liquid storage tank 11 through the delivery pipeline A17 and the liquid return pipe 15 to recycle and preserve heat.

[0070] Release of thermal energy:

[0071] a. System thermal energy release: When thermal energy needs to be released, open the heat exchanger three-way valve 18. The liquid guide passes through the delivery pipeline F38 and the delivery pipeline J44 from the auxiliary heater 40 into the three-way valve, and then flows back to the liquid storage tank 11 through the return pipe.

[0072] b. Crude oil heating: The crude oil enters the heat exchanger 19 through the crude oil inlet pipe 26, and exchanges heat with the liquid guide in the heat exchanger 19, so that the heat in the liquid guide is transferred to the crude oil to complete the heating of the crude oil.

[0073] c. Crude oil discharge: The heated crude oil is discharged through the crude oil discharge pipe 25.

[0074] Through the above steps, the phase change heat storage system realizes the collection, storage and release of thermal energy. During the heating process, the liquid guide is heated by the external heat source, the main heater 35 and the auxiliary heater 40, and at the same time, the liquid guide transfers heat to the phase change heat storage material for heat storage. During the process of releasing thermal energy, the heat in the liquid guide is transferred to the crude oil through the heat exchanger 19 to realize the heating of the crude oil and release the thermal energy to the external environment. The whole system realizes the transfer and regulation of thermal energy through the connection of pipelines and the control of valves.

[0075] 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 them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate 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 body (1), a support base (2), a heat storage device and a heat storage tank (24). The support base (2) is fixedly connected to the bottom of the box body (1). The heat storage device and the heat storage tank (24) are both arranged inside the box body (1), and the heat storage device and the heat storage tank (24) are interconnected through pipelines. It is characterized in that: The heat storage device includes 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 interconnected 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). A delivery pipeline I (43) is connected to the bottom of the auxiliary heater (40), and the delivery pipeline I (43) is interconnected with the heat storage tank (24) through a delivery pipeline B (29). The heat exchanger (19) 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). A delivery pipeline A (17) and a delivery pipeline E (37) are respectively connected to the upper end of the heat exchanger (19). One side of the liquid storage tank (11) is connected to a delivery pipeline C (32). A circulation pump (33) and an outlet filter (34) are installed on the delivery pipeline C (32). One end of the delivery pipeline C (32) is connected to the reversing three-way valve (23). The other side of the liquid storage tank (11) is connected to a sewage discharge pipe (46), and a sewage discharge pipe valve (47) is installed on the sewage discharge pipe (46).

2. The phase change heat storage system based on crude oil transportation according to claim 1, characterized in that, A return pipe (15) is arranged at the top of the liquid storage tank (11), and the return pipe (15) is interconnected with the liquid storage tank (11). The delivery pipeline A (17) and the delivery pipeline E (37) are both interconnected with the return pipe (15). The heat exchanger three-way valve (18) is connected to the return pipe (15), and a control valve A (16) is installed on the return pipe (15). A delivery pipeline F (38) and a delivery pipeline J (44) are arranged 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), and the delivery pipeline F (38) is interconnected with the delivery pipeline J (44). 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, wherein The upper end of the support base (2) is fixedly connected with a support vertical frame A (27), and both the crude oil discharge pipe (25) and the crude oil inlet pipe (26) are fixedly connected to the support vertical frame A (27) through a limit hoop (28).

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

5. The phase change heat storage system based on crude oil transportation according to claim 1, wherein A handle (14) is fixedly connected to the liquid storage tank (11). A cross-shaped 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 upper end of the support base (2) through a fixing bolt (13).

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

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

8. A phase change heat storage system based on crude oil transportation according to claim 7, characterized in that, A sleeve (10) is sleeved outside the rotating rod (6). A fixing piece (9) is integrally connected to the sleeve (10), and the fixing piece (9) is fixedly connected to the door panel A (3) and the door panel B (4). Pressing pieces (8) for pressing the handle (7) are connected to both the door panel A (3) and the door panel B (4).

9. A phase change heat storage system based on crude oil transportation according to claim 1, characterized in that A bracket (39) is fixedly connected to the upper end of the support vertical frame B (36), and the heat exchanger (19) is fixedly connected to the upper end of the bracket (39).

10. A 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 with a liquid supplement pipe (20), and the liquid supplement pipe (20) is interconnected with the liquid storage tank (11).

Images