Heavy hydrocarbon loading device

Abstract

The utility model relates to the technical field of oil product loading, and provides a heavy hydrocarbon loading device which comprises a supporting seat and a heavy hydrocarbon loading system. The heavy hydrocarbon loading system is arranged on the supporting base and provided with a heavy hydrocarbon inlet, a liquid phase connector, a gas phase connector, a return gas outlet, an emptying connector and a nitrogen inlet, the heavy hydrocarbon inlet is suitable for being connected with a source storage tank, the liquid phase connector is suitable for being connected with a liquid phase inlet of a target storage tank, and the gas phase connector is suitable for being connected with a gas phase outlet of the target storage tank. The return gas outlet is suitable for being connected with a fuel storage tank, the emptying connector is suitable for being connected with an emptying medium collecting system, and the nitrogen inlet is suitable for being connected with a nitrogen source. By means of the arrangement, the heavy hydrocarbon loading system is arranged on the supporting base and integrated together to form a skid-mounted structure, after being assembled in advance, the skid-mounted structure can be put into use after being transported to a loading site, a large amount of welding and assembling do not need to be conducted on the site, and the heavy hydrocarbon loading system and the supporting base can be transferred and transported together; and various parts of the heavy hydrocarbon loading system do not need to be disassembled, so that the heavy hydrocarbon loading system is convenient to reuse.

Description

Technical Field

[0001] The utility model relates to the technical field of oil loading, in particular to a heavy hydrocarbon loading device. Background Art

[0002] Heavy hydrocarbon loading is a crucial logistics process in the petroleum and chemical industry. Its primary purpose is to safely and efficiently transfer heavy hydrocarbons (such as crude oil, diesel, and heavy fuel oil) from production or storage facilities to transport vehicles (such as tank trucks) for further transportation to their destinations. Pumps are primarily used to transfer heavy hydrocarbons from storage tanks to loading cranes, which then inject them into tank trucks. The entire process requires precise control of flow, pressure, and temperature to ensure safety and efficiency.

[0003] Currently, heavy hydrocarbon loading is primarily accomplished at heavy hydrocarbon loading stations. Equipment and pipelines at these stations are installed on-site, increasing the workload. Furthermore, connections to valves and pipelines rely on welding processes, which, due to the impact of on-site climatic conditions, can result in low welding quality. Furthermore, reusing equipment and pipelines at these stations requires cutting, dismantling, and then reinstalling the on-site equipment, process pipelines, and loading systems, resulting in a waste of manpower, material, and financial resources.

[0004] Therefore, how to solve the problems of heavy hydrocarbon loading stations in related technologies, such as large on-site assembly construction volume, unguaranteed construction welding quality and inconvenient reuse, has become an important technical problem that technicians in this field need to solve. Utility Model Content

[0005] The utility model provides a heavy hydrocarbon loading device, which is used to solve the defects of heavy hydrocarbon loading stations in the related art, such as large on-site assembly construction workload, unguaranteed construction welding quality and inconvenient reuse.

[0006] The utility model provides a heavy hydrocarbon loading device for transporting heavy hydrocarbons from a source storage tank to a target storage tank. The heavy hydrocarbon loading device comprises:

[0007] Support seat;

[0008] A heavy hydrocarbon loading system is arranged on the support seat. The heavy hydrocarbon loading system has a heavy hydrocarbon inlet, a liquid phase interface, a gas phase interface, a return gas outlet, a vent interface and a nitrogen inlet. The heavy hydrocarbon inlet is suitable for connecting to the source storage tank, the liquid phase interface is suitable for connecting to the liquid phase inlet of the target storage tank, the gas phase interface is suitable for connecting to the gas phase outlet of the target storage tank, the return gas outlet is suitable for connecting to the fuel storage tank, the vent interface is suitable for connecting to the vent medium collection system, and the nitrogen inlet is suitable for connecting to the nitrogen source.

[0009] According to a heavy hydrocarbon loading device provided by the present invention, the heavy hydrocarbon loading system includes:

[0010] A loading arm is provided on the support base, the loading arm having a medium inlet, the liquid phase interface, the gas phase interface, a gas phase return port, a vent port and a nitrogen inlet;

[0011] A heavy hydrocarbon pipeline system is arranged on the support seat, and the heavy hydrocarbon pipeline system includes a heavy hydrocarbon pipeline, a return air pipeline, a vent pipeline and a nitrogen pipeline. The first end of the heavy hydrocarbon pipeline serves as the heavy hydrocarbon inlet, the second end of the heavy hydrocarbon pipeline is connected to the medium inlet, the first end of the return air pipeline is connected to the gas phase return port, the second end of the return air pipeline serves as the return air outlet, the inlet end of the vent pipeline is connected to the heavy hydrocarbon pipeline and the return air pipeline, the outlet end of the vent pipeline serves as the vent interface, the first end of the nitrogen pipeline serves as the nitrogen inlet, and the second end of the nitrogen pipeline is connected to the nitrogen inlet.

[0012] According to a heavy hydrocarbon loading device provided by the present invention, a power pump and a first control valve are provided on the heavy hydrocarbon pipeline, and the first control valve is suitable for controlling the on-off state of the heavy hydrocarbon pipeline;

[0013] The return air pipeline is provided with a second control valve, which is suitable for controlling the on-off state of the return air pipeline.

[0014] According to the heavy hydrocarbon loading device provided by the present invention, a flow meter is further provided on the heavy hydrocarbon pipeline, and the flow meter is suitable for detecting the flow rate of the heavy hydrocarbon in the heavy hydrocarbon pipeline.

[0015] According to a heavy hydrocarbon loading device provided by the present invention, the first control valve and the second control valve are electromagnetic control valves, and the first control valve, the second control valve, the flow meter and the power pump are all electrically connected to the control device;

[0016] Alternatively, the first control valve and the second control valve are both pneumatic control valves, and the heavy hydrocarbon loading system also includes a control air pipeline, one end of the control air pipeline is connected to the control air source, and the other end of the control air pipeline is connected to the first control valve and the second control valve, and the valves on the control air pipeline, the flow meter and the power pump are all electrically connected to the control device.

[0017] According to a heavy hydrocarbon loading device provided by the utility model, at least one of a first pressure gauge and a thermometer is also provided on the heavy hydrocarbon pipeline. The first pressure gauge is suitable for detecting the pressure in the heavy hydrocarbon pipeline, and the thermometer is suitable for detecting the temperature of the heavy hydrocarbon in the heavy hydrocarbon pipeline.

[0018] According to a heavy hydrocarbon loading device provided by the present invention, the venting pipeline includes:

[0019] a first main pipe, wherein the outlet end of the first main pipe serves as the venting interface;

[0020] a first branch pipeline, provided between the first main pipeline and the heavy hydrocarbon pipeline, wherein a first shut-off valve and a first flow regulating valve are provided on the first branch pipeline;

[0021] a second branch pipeline, provided between the first main pipeline and the heavy hydrocarbon pipeline, the second branch pipeline being provided with a third stop valve and a second stop valve, a safety valve and a second flow regulating valve provided in parallel with the third stop valve;

[0022] a third branch pipeline, provided between the first main pipeline and the return air pipeline, wherein a fourth shut-off valve and a fourth flow regulating valve are provided on the third branch pipeline;

[0023] The fourth branch pipeline is arranged between the first main pipeline and the vent, and a fifth stop valve is arranged on the fourth branch pipeline.

[0024] According to the heavy hydrocarbon loading device provided by the present invention, a second pressure gauge is further provided on the return air pipeline, and the second pressure gauge is suitable for detecting the pressure in the return air pipeline.

[0025] According to a heavy hydrocarbon loading device provided by the present invention, the nitrogen pipeline includes:

[0026] a second main line, wherein an inlet end of the second main line serves as the nitrogen inlet, and a sixth shut-off valve is provided on the second main line;

[0027] a fifth branch pipeline, provided between the second main pipeline and the heavy hydrocarbon pipeline, wherein a seventh shut-off valve is provided on the fifth branch pipeline;

[0028] The sixth branch pipeline is provided between the second main pipeline and the nitrogen inlet, and an eighth shut-off valve is provided on the sixth branch pipeline.

[0029] According to a heavy hydrocarbon loading device provided by the utility model, at least one of a check valve, a condensate drain valve and a third pressure gauge is also provided on the second main line, the check valve is suitable for limiting the backflow of gas in the second main line, the condensate drain valve is suitable for discharging condensed water in the second main line, and the third pressure gauge is suitable for detecting the pressure in the second main line.

[0030] The heavy hydrocarbon loading device provided by the present invention is used to transport heavy hydrocarbons from a source storage tank to a target storage tank. The heavy hydrocarbon loading device includes a support seat and a heavy hydrocarbon loading system. The heavy hydrocarbon loading system is arranged on the support seat. The heavy hydrocarbon loading system has a heavy hydrocarbon inlet, a liquid phase interface, a gas phase interface, a return gas outlet, a vent interface and a nitrogen inlet. The heavy hydrocarbon inlet is used to connect to the source storage tank, the liquid phase interface is used to connect to the liquid phase inlet of the target storage tank, the gas phase interface is used to connect to the gas phase outlet of the target storage tank, the return gas outlet is used to connect to the fuel storage tank, the vent interface is used to connect to the vent medium collection system, and the nitrogen inlet is used to connect to the nitrogen source. In this way, the heavy hydrocarbon loading system is set on the support base and integrated together to form a skid-mounted structure. After pre-assembly, it can be transported to the loading site and put into use without the need for a large amount of welding and assembly on site. The heavy hydrocarbon loading system and the support base can be transferred and transported together, and there is no need to disassemble the various components of the heavy hydrocarbon loading system, which is convenient for reuse. This solves the problems of heavy hydrocarbon loading stations in related technologies, such as large on-site assembly construction volume, unguaranteed construction welding quality, and inconvenient reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is a structural schematic diagram of the heavy hydrocarbon loading device provided by the utility model at one viewing angle.

[0033] Figure 2 It is a structural schematic diagram of the heavy hydrocarbon loading device provided by the utility model at another viewing angle.

[0034] Figure 3 This is a structural principle diagram of the heavy hydrocarbon loading system provided by the utility model.

[0035] Reference numerals:

[0036] 1. Support seat; 2. Heavy hydrocarbon interface; 3. Liquid interface; 4. Gas interface; 5. Return air interface; 6. Vent interface; 7. Nitrogen interface; 8. Loading arm; 9. Medium inlet; 10. Gas return port; 11. Vent port; 12. Nitrogen inlet; 13. Heavy hydrocarbon pipeline; 14. Return air pipeline; 15. Third pressure gauge; 16. First control valve; 17. Second control valve; 18. Flow meter; 19. Control air pipeline; 20. First pressure gauge; 21. Thermometer; 22. First main pipeline; 23. First branch pipeline; 24. First stop valve; 2 5. First flow regulating valve; 26. Second branch pipeline; 27. Third stop valve; 28. Second stop valve; 29. ​​Safety valve; 30. Second flow regulating valve; 31. Third branch pipeline; 32. Fourth stop valve; 33. Fourth flow regulating valve; 34. Fourth branch pipeline; 35. Fifth stop valve; 36. Second pressure gauge; 37. Second main pipeline; 38. Sixth stop valve; 39. Fifth branch pipeline; 40. Seventh stop valve; 41. Sixth branch pipeline; 42. Eighth stop valve; 43. Check valve; 44. Condensate drain valve; 45. Manual switch. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. 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 creative efforts are within the scope of protection of the present invention.

[0038] The following combination Figures 1 to 3 The present invention describes a heavy hydrocarbon loading device.

[0039] like Figures 1 to 3 As shown, the heavy hydrocarbon loading device provided by the embodiment of the present invention is used to transport heavy hydrocarbons from a source storage tank to a target storage tank. The heavy hydrocarbon loading device includes a support base 1 and a heavy hydrocarbon loading system.

[0040] Specifically, the heavy hydrocarbon loading system has a heavy hydrocarbon interface 2, a liquid phase interface 3, a gas phase interface 4, a return air interface 5, a vent interface 6, and a nitrogen interface 7. The heavy hydrocarbon interface 2 is used to connect to the source storage tank, the liquid phase interface 3 is used to connect to the liquid phase inlet of the target storage tank, the gas phase interface 4 is used to connect to the gas phase outlet of the target storage tank, and the return air interface 5 is used to connect to the fuel storage tank.

[0041] The source tank stores liquid heavy hydrocarbons, and the target tank can be a tank on a transport vehicle. When the heavy hydrocarbon loading system is in operation, the liquid heavy hydrocarbons in the source tank can be transported to the target tank. The liquid heavy hydrocarbons are partially converted into gaseous heavy hydrocarbons in the target tank. As the liquid heavy hydrocarbons flow into the target tank, the residual gas and gaseous heavy hydrocarbons in the target tank flow out of the target tank and flow into the fuel tank. The fuel tank collects the residual gas and gaseous heavy hydrocarbons and can later be used as fuel.

[0042] The vent interface 6 of the heavy hydrocarbon loading system is used to connect to the vent medium collection system. When the pressure in the heavy hydrocarbon loading system exceeds the preset value, the medium in the heavy hydrocarbon loading system can flow to the vent medium collection system through the vent interface 6, thereby avoiding excessive pressure in the heavy hydrocarbon loading system and ensuring the safe operation of the heavy hydrocarbon loading system.

[0043] The nitrogen interface 7 is used to connect a nitrogen source, and nitrogen can be introduced into the heavy hydrocarbon loading system and the target storage tank to discharge the medium in the target storage tank. Specifically, before filling the target storage tank with liquid heavy hydrocarbons, nitrogen can be first added to the target storage tank, and the air or gaseous heavy hydrocarbons in the target storage tank can be discharged by using nitrogen, and then the target storage tank can be filled with liquid heavy hydrocarbons. By filling the target storage tank with nitrogen, the liquid heavy hydrocarbons in the target storage tank can also be discharged, thereby realizing the function of unloading.

[0044] The heavy hydrocarbon loading system is arranged on the support base 1 , and the heavy hydrocarbon loading system and the support base 1 are integrated together to form a skid-mounted structure.

[0045] With such an arrangement, the process of assembling the heavy hydrocarbon loading system to the support seat 1 can be carried out in the assembly workshop of the factory, and the assembled heavy hydrocarbon loading device can be transported to the loading site. The heavy hydrocarbon loading device can be connected to the source storage tank, target storage tank, venting medium collection system and nitrogen source at the loading site, and then it can be put into use. There is no need to carry out a large amount of welding and assembly at the loading site. The assembly process of the heavy hydrocarbon loading device is no longer affected by the environment of the loading site, and the assembly quality is guaranteed. Moreover, after the heavy hydrocarbon loading system is assembled to the support seat 1, there is no need to disassemble and assemble the heavy hydrocarbon loading system itself. The heavy hydrocarbon loading system and the support seat 1 can be transferred and transported together for easy reuse, which solves the problems of the heavy hydrocarbon loading station in the related art, such as large on-site assembly construction volume, unguaranteed construction welding quality and inconvenient reuse.

[0046] It should be noted that flanges are respectively provided at the heavy hydrocarbon interface 2, liquid phase interface 3, gas phase interface 4, return air interface 5, vent interface 6 and nitrogen interface 7. When connecting the heavy hydrocarbon interface 2 to the source storage tank, connecting the liquid phase interface 3 to the liquid phase inlet of the target storage tank, connecting the gas phase interface 4 to the gas phase outlet of the target storage tank, connecting the return air interface 5 to the fuel storage tank, connecting the vent port 11 to the vent medium collection system, and connecting the nitrogen interface 7 to the nitrogen source, bolts can be used for connection, which facilitates the disassembly and assembly between the heavy hydrocarbon loading device provided in this embodiment and the equipment at the loading site, greatly improving the efficiency of on-site construction and installation.

[0047] In this embodiment, the heavy hydrocarbon loading system includes a loading arm 8 and a heavy hydrocarbon pipeline system.

[0048] The loading arm 8 is mounted on the support base 1 and includes a medium inlet 9, a liquid interface 3, a gas interface 4, a gas return port 10, a vent port 11, and a nitrogen inlet 12. The loading arm 8 is not limited to being configured as a crane pipe. The loading arm 8 may include internal connecting pipes and valves that can control the connectivity between any two of the medium inlet 9, the liquid interface 3, the gas interface 4, the gas return port 10, the vent port 11, and the nitrogen inlet 12. The internal structure of the loading arm 8 is well-established technology for those skilled in the art and will not be further described herein.

[0049] The heavy hydrocarbon pipeline system is arranged on the support base 1, and the heavy hydrocarbon pipeline system includes a heavy hydrocarbon pipeline 13, a return gas pipeline 14, a vent pipeline and a nitrogen pipeline.

[0050] The first end of the heavy hydrocarbon pipeline 13 serves as the heavy hydrocarbon interface 2, and the second end of the heavy hydrocarbon pipeline 13 is connected to the medium inlet 9 of the loading arm 8. The first end of the return gas pipeline 14 is connected to the gas phase return port 10, and the second end of the return gas pipeline 14 serves as the return gas interface 5.

[0051] The inlet end of the vent line is connected to the heavy hydrocarbon line 13 and the return gas line 14 , and the outlet end of the vent line serves as the vent interface 6 .

[0052] The first end of the nitrogen pipeline serves as the nitrogen interface 7 , and the second end of the nitrogen pipeline is connected to the nitrogen interface 7 .

[0053] In this embodiment, a power pump and a first control valve 16 are provided on the heavy hydrocarbon pipeline 13. The power pump provides power for the circulation of liquid heavy hydrocarbons in the heavy hydrocarbon pipeline 13. The first control valve 16 is used to control the on-off state of the heavy hydrocarbon pipeline 13. A second control valve 17 is provided on the return gas pipeline 14. The second control valve 17 is used to control the on-off state of the return gas pipeline 14.

[0054] The actions of the power pump, the first control valve 16 and the second control valve 17 can be controlled according to the filling demand of the target storage tank for liquid heavy hydrocarbons.

[0055] Furthermore, a flow meter 18 is provided on the heavy hydrocarbon pipeline 13 to detect the flow rate of the heavy hydrocarbons in the heavy hydrocarbon pipeline 13. During the loading process, the amount of liquid heavy hydrocarbons added to the target storage tank can be determined to facilitate the control of the operation of the power pump, the first control valve 16, and the second control valve 17 to achieve quantitative addition of the liquid heavy hydrocarbons.

[0056] In some embodiments, the first control valve 16 and the second control valve 17 are configured as electromagnetic control valves, and the first control valve 16, the second control valve 17, the flow meter 18, and the power pump are all electrically connected to a control device. The control device determines the injection amount of the liquid heavy hydrocarbon based on the measurement results of the flow meter 18, and controls the operation of the power pump, the first control valve 16, and the second control valve 17 based on the injection amount of the liquid heavy hydrocarbon.

[0057] In other embodiments, the first control valve 16 and the second control valve 17 are configured as pneumatic control valves, and the heavy hydrocarbon loading system further includes a control air pipeline 19, one end of which is connected to a control air source, and the other end of which is connected to the first control valve 16 and the second control valve 17. A valve is provided on the control air pipeline 19 for controlling the on / off state of the control air pipeline 19. By configuring the valve on the control air pipeline 19 as an electromagnetic control valve, and electrically connecting the valve, flow meter 18, and power pump on the control air pipeline 19 to a control device, the first control valve 16, the second control valve 17, and the power pump can also be controlled according to the injection amount of liquid heavy hydrocarbons.

[0058] In this embodiment, at least one of a first pressure gauge 20 and a thermometer 21 is also provided on the heavy hydrocarbon pipeline 13. The first pressure gauge 20 is used to detect the pressure in the heavy hydrocarbon pipeline 13, and the thermometer 21 is used to detect the temperature of the heavy hydrocarbons in the heavy hydrocarbon pipeline 13, so that the operator can understand the operation status of the heavy hydrocarbon loading device in real time.

[0059] The thermometer 21 may be a bimetallic thermometer 21 , which has the advantages of good durability, no need for external power supply, fast response speed, easy reading, and convenient installation.

[0060] In the embodiment of the present invention, the vent pipeline includes a first main pipeline 22 , a first branch pipeline 23 , a second branch pipeline 26 , a third branch pipeline 31 and a fourth branch pipeline 34 .

[0061] The outlet end of the first main line 22 serves as a venting interface 6 .

[0062] The first branch line 23 is arranged between the first main line 22 and the heavy hydrocarbon line 13, and the two ends of the first branch line 23 are respectively connected to the inlet end of the first main line 22 and the heavy hydrocarbon line 13. A first stop valve 24 and a first flow regulating valve 25 are provided on the first branch line 23. The on-off state of the first branch line 23 can be controlled by the first stop valve 24. When it is necessary to flow the liquid heavy hydrocarbons in the heavy hydrocarbon line 13 to the vent line, the first stop valve 24 can be controlled to be in an open state. The first flow regulating valve 25 can regulate the flow in the first branch line 23. When opening the first stop valve 24, the first flow regulating valve 25 can be adjusted to the minimum opening first. After opening the first stop valve 24, the opening of the first flow regulating valve 25 can be gradually increased to gradually increase the venting speed.

[0063] A second branch line 26 is provided between the first main line 22 and the heavy hydrocarbon line 13. The two ends of the second branch line 26 are respectively connected to the inlet of the first main line 22 and the heavy hydrocarbon line 13. The second branch line 26 is provided with a third shutoff valve 27, a second shutoff valve 28, a safety valve 29, and a second flow regulating valve 30, which are provided in parallel with the third shutoff valve 27.

[0064] During normal loading, the first and third shut-off valves 24 and 27 are both closed, while the second shut-off valve 28 is open. When the pressure in the heavy hydrocarbon pipeline 13 exceeds the safety threshold of the safety valve 29, the liquid heavy hydrocarbons in the heavy hydrocarbon pipeline 13 flow through the second shut-off valve 28, the safety valve 29, and the second flow regulating valve 30 to the venting pipeline.

[0065] During the loading process, if the safety valve 29 needs to be inspected and repaired, the first stop valve 24 and the second stop valve 28 are closed, and the third stop valve 27 is opened.

[0066] When inspecting other positions, the first stop valve 24 can be opened, and the second stop valve 28 and the third stop valve 27 can be closed.

[0067] The third branch line 31 is located between the first main line 22 and the return line 14. Its two ends are connected to the inlet of the first main line 22 and the return line 14, respectively. A fourth shutoff valve 32 and a fourth flow control valve 33 are provided on the third branch line 31. The fourth shutoff valve 32 controls the on / off state of the third branch line 31. To allow gas in the return line 14 to flow to the vent line, the fourth shutoff valve 32 is opened. The fourth flow control valve 33 regulates the flow rate within the third branch line 31.

[0068] The fourth branch line 34 is disposed between the first main line 22 and the vent 11. Its two ends are connected to the inlet of the first main line 22 and the vent 11, respectively. A fifth shutoff valve 35 is provided on the fourth branch line 34 to control the on / off state of the fourth branch line 34. The fifth shutoff valve 35 can be opened and closed as needed.

[0069] In this embodiment, a second pressure gauge 36 is further provided on the return air pipeline 14 , and the second pressure gauge 36 is used to detect the pressure in the return air pipeline 14 .

[0070] A manual switch 45 is also provided on the return air pipeline 14 , and the on / off state of the return air pipeline 14 is manually controlled by the manual switch 45 as needed.

[0071] In this embodiment, the nitrogen pipeline includes a second main pipeline 37 , a fifth branch pipeline 39 and a sixth branch pipeline 41 .

[0072] The inlet end of the second main line 37 serves as the nitrogen port 7, and a sixth shut-off valve 38 is provided on the second main line 37. A fifth branch line 39 is provided between the second main line 37 and the heavy hydrocarbon line 13, with its two ends connected to the outlet end of the second main line 37 and the heavy hydrocarbon line 13, respectively. A seventh shut-off valve 40 is provided on the fifth branch line 39. A sixth branch line 41 is provided between the second main line 37 and the nitrogen inlet 12, with its two ends connected to the outlet end of the second main line 37 and the nitrogen inlet 12, respectively. An eighth shut-off valve 42 is provided on the sixth branch line 41.

[0073] Nitrogen can be added to the heavy hydrocarbon pipeline 13 through the fifth branch pipeline 39, and then added to the target storage tank through the loading arm 8 to displace the residual gas in the target storage tank before adding heavy hydrocarbons to the target storage tank.

[0074] Nitrogen can be directly added to the loading arm 8 through the sixth branch line 41 and vented to the vent medium collection system through the vent port 11. This is used to discharge residual materials from the loading arm 8 and relieve pressure from the loading arm 8 after the target storage tank is filled with heavy hydrocarbons, thereby safely disconnecting the liquid phase interface 3 and gas phase interface 4 of the loading arm 8 from the liquid phase inlet and gas phase inlet of the target storage tank, respectively.

[0075] In this embodiment, at least one of a check valve 43 , a condensate drain valve 44 and a third pressure gauge 15 is further provided on the second main line 37 . The check valve 43 is used to limit the backflow of gas in the second main line 37 , and the third pressure gauge 15 is used to detect the pressure in the second main line 37 .

[0076] The condensate drain valve 44 is used to drain condensed water from the second main line 37. Condensed water is generated in the nitrogen line. Promptly draining the condensed water from the nitrogen line through the condensate drain valve 44 can prevent the condensed water from entering the heavy hydrocarbon line 13 or the target storage tank, thereby preventing contamination of the heavy hydrocarbons and corrosion of the line, thereby extending the service life of the heavy hydrocarbon loading device.

[0077] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A heavy hydrocarbon loading device, characterized in that: Used to transport heavy hydrocarbons from a source storage tank to a target storage tank, the heavy hydrocarbon loading device includes: Support seat (1); A heavy hydrocarbon loading system is provided on the support seat (1), and the heavy hydrocarbon loading system has a heavy hydrocarbon interface (2), a liquid phase interface (3), a gas phase interface (4), a return gas interface (5), a vent interface (6) and a nitrogen interface (7), wherein the heavy hydrocarbon interface (2) is suitable for connecting to the source storage tank, the liquid phase interface (3) is suitable for connecting to the liquid phase inlet of the target storage tank, the gas phase interface (4) is suitable for connecting to the gas phase outlet of the target storage tank, the return gas interface (5) is suitable for connecting to the fuel storage tank, the vent interface (6) is suitable for connecting to the vent medium collection system, and the nitrogen interface (7) is suitable for connecting to the nitrogen source.

2. The heavy hydrocarbon loading device according to claim 1, characterized in that: The heavy hydrocarbon loading system comprises: A loading arm (8) is provided on the support base (1), wherein the loading arm (8) has a medium inlet (9), the liquid phase interface (3), the gas phase interface (4), a gas phase return port (10), a vent port (11) and a nitrogen inlet (12); A heavy hydrocarbon pipeline system is arranged on the support seat (1), and the heavy hydrocarbon pipeline system includes a heavy hydrocarbon pipeline (13), a return gas pipeline (14), a vent pipeline and a nitrogen pipeline. The first end of the heavy hydrocarbon pipeline (13) serves as the heavy hydrocarbon interface (2), the second end of the heavy hydrocarbon pipeline (13) is connected to the medium inlet (9), the first end of the return gas pipeline (14) is connected to the gas phase return port (10), the second end of the return gas pipeline (14) serves as the return gas interface (5), the inlet end of the vent pipeline is connected to the heavy hydrocarbon pipeline (13) and the return gas pipeline (14), the outlet end of the vent pipeline serves as the vent interface (6), the first end of the nitrogen pipeline serves as the nitrogen interface (7), and the second end of the nitrogen pipeline is connected to the nitrogen interface (7).

3. The heavy hydrocarbon loading device according to claim 2, characterized in that: The heavy hydrocarbon pipeline (13) is provided with a power pump and a first control valve (16), and the first control valve (16) is suitable for controlling the on-off state of the heavy hydrocarbon pipeline (13); A second control valve (17) is provided on the return air pipeline (14), and the second control valve (17) is suitable for controlling the on-off state of the return air pipeline (14).

4. The heavy hydrocarbon loading device according to claim 3, characterized in that: The heavy hydrocarbon pipeline (13) is also provided with a flow meter (18), and the flow meter (18) is suitable for detecting the flow rate of heavy hydrocarbons in the heavy hydrocarbon pipeline (13).

5. The heavy hydrocarbon loading device according to claim 4, characterized in that: The first control valve (16) and the second control valve (17) are electromagnetic control valves, and the first control valve (16), the second control valve (17), the flow meter (18) and the power pump are all electrically connected to the control device; Alternatively, the first control valve (16) and the second control valve (17) are both pneumatic control valves, and the heavy hydrocarbon loading system further includes a control air pipeline (19), one end of the control air pipeline (19) is connected to a control air source, and the other end of the control air pipeline (19) is connected to the first control valve (16) and the second control valve (17), and the valves on the control air pipeline (19), the flow meter (18) and the power pump are all electrically connected to the control device.

6. The heavy hydrocarbon loading device according to claim 2, characterized in that: The heavy hydrocarbon pipeline (13) is further provided with at least one of a first pressure gauge (20) and a thermometer (21), wherein the first pressure gauge (20) is suitable for detecting the pressure in the heavy hydrocarbon pipeline (13), and the thermometer (21) is suitable for detecting the temperature of the heavy hydrocarbon in the heavy hydrocarbon pipeline (13).

7. The heavy hydrocarbon loading device according to claim 2, characterized in that: The venting pipeline comprises: a first main line (22), wherein the outlet end of the first main line (22) serves as the venting interface (6); a first branch pipeline (23) provided between the first main pipeline (22) and the heavy hydrocarbon pipeline (13); a first stop valve (24) and a first flow regulating valve (25) provided on the first branch pipeline (23); A second branch pipeline (26) is provided between the first main pipeline (22) and the heavy hydrocarbon pipeline (13), and the second branch pipeline (26) is provided with a third stop valve (27), a second stop valve (28) connected in parallel with the third stop valve (27), a safety valve (29), and a second flow regulating valve (30); a third branch pipeline (31) provided between the first main pipeline (22) and the return air pipeline (14), wherein a fourth stop valve (32) and a fourth flow regulating valve (33) are provided on the third branch pipeline (31); The fourth branch pipeline (34) is provided between the first main pipeline (22) and the vent (11), and a fifth stop valve (35) is provided on the fourth branch pipeline (34).

8. The heavy hydrocarbon loading device according to claim 2, characterized in that: A second pressure gauge (36) is also provided on the return air pipeline (14), and the second pressure gauge (36) is suitable for detecting the pressure in the return air pipeline (14).

9. The heavy hydrocarbon loading device according to claim 2, characterized in that: The nitrogen pipeline comprises: a second main line (37), the inlet end of the second main line (37) serving as the nitrogen interface (7), and a sixth shut-off valve (38) being provided on the second main line (37); a fifth branch pipeline (39) provided between the second main pipeline (37) and the heavy hydrocarbon pipeline (13), and a seventh shut-off valve (40) provided on the fifth branch pipeline (39); The sixth branch pipeline (41) is provided between the second main pipeline (37) and the nitrogen inlet (12), and an eighth stop valve (42) is provided on the sixth branch pipeline (41).

10. The heavy hydrocarbon loading device according to claim 9, characterized in that: The second main line (37) is further provided with at least one of a check valve (43), a condensate drain valve (44) and a third pressure gauge (15), wherein the check valve (43) is suitable for limiting the backflow of gas in the second main line (37), the condensate drain valve (44) is suitable for discharging condensed water in the second main line (37), and the third pressure gauge (15) is suitable for detecting the pressure in the second main line (37).

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