A mobile LNG tank container filling terminal process device system

Abstract

The present invention relates to a mobile LNG tank container filling terminal process device system, comprising an LNG receiving ship, an LNG filling metering unit, an EAG discharge unit, an NG / N2 purge and replacement unit, a gasification and pressurization unit, an LNG filling pump skid unit, a mobile LNG tank container and a mobile walking unit, wherein the LNG filling metering unit, the EAG discharge unit, the NG / N2 purge and replacement unit, the gasification and pressurization unit and the LNG filling pump skid unit are respectively fixed on the mobile walking unit, the LNG filling metering unit is respectively connected to the LNG receiving ship, the NG / N2 purge and replacement unit and the LNG filling pump skid unit correspondingly, the NG / N2 purge and replacement unit is respectively connected to the LNG filling metering unit and the LNG filling pump skid unit correspondingly, the gasification and pressurization unit is respectively connected to the LNG filling pump skid unit correspondingly, the LNG filling pump skid unit is respectively connected to the LNG filling metering unit, the NG / N2 purge and replacement unit, the gasification and pressurization unit and the mobile LNG tank container correspondingly, and the EAG discharge unit is respectively connected to the LNG filling metering unit, the LNG filling pump skid unit and the mobile LNG tank container correspondingly.

Description

Technical Field

[0001] The present invention relates to the technical field of LNG filling terminals, and in particular to a process device system of a mobile LNG tank container filling terminal. Background Art

[0002] As a clean energy, liquefied natural gas (LNG) has been increasingly used in my country's industrial and civilian fields in recent years. Compared with traditional fuels, LNG is a cleaner energy source that can effectively reduce emissions of carbon dioxide, sulfur oxides and nitrogen oxides. Using LNG as a marine fuel has significant economic efficiency and good environmental performance. In recent years, my country has been vigorously promoting the development of LNG-powered ships. According to the "Guiding Opinions on Promoting the Application of LNG in the Water Transport Industry" issued by the Ministry of Transport, by 2015, the proportion of LNG in the energy consumption of inland waterway transport ships will reach more than 2%; by 2020, ordinary cargo ships and passenger ships, port ships, engineering ships, etc. in major inland waters across the country will widely use LNG, and the pilot work of LNG application for ocean-going ships will be launched, and the proportion of LNG in the energy consumption of inland waterway transport ships will reach more than 10%. However, due to factors such as the imperfect supporting facilities such as LNG bunkering terminals, the shrinking LNG price advantage, and the sluggish shipping market, my country's LNG-powered ships have been lacking in "power" and the development status has not been as expected. In particular, the imperfect facilities and equipment related to LNG bunkering terminals are an important reason why the number of LNG-powered ships cannot grow rapidly.

[0003] At present, domestic LNG refueling terminals include shore-based LNG refueling terminals and pontoon-type LNG refueling terminals. Both of the above LNG refueling process systems require the construction of fixed LNG low-temperature insulated storage tanks. The shore-based LNG refueling terminal also requires land acquisition on land to arrange related process refueling facilities. In addition, since inland river LNG transportation has not yet been liberalized, the LNG refueling process system cannot be refilled by ship, and can only be refilled by land tank truck road transportation. Additional unloading and refilling process facilities are required, and the scattered layout of process equipment units increases the amount of BOG generated and the risk of low-temperature leakage. Therefore, the current conventional domestic LNG refueling process has inherent defects such as high requirements for equipment and facility construction, large engineering investment, and high operating costs.

[0004] To this end, in view of the above-mentioned defects, the designers of the present invention have devoted themselves to research and design, and combined the experience and achievements of many years in related industries to research and design a mobile LNG tank container filling terminal process device system to overcome the above-mentioned defects. Summary of the invention

[0005] In view of the above problems, the present invention provides a mobile LNG tank container filling terminal process device system, which effectively solves the shortcomings of the prior art.

[0006] In order to achieve the above object, the technical solution applied by the present invention is as follows:

[0007] A mobile LNG tank container filling terminal process device system comprises an LNG receiving ship, an LNG filling metering unit, an EAG discharge unit, an NG / N2 purge and replacement unit, a gasification and pressurization unit, an LNG filling pump skid unit, a mobile LNG tank container and a mobile walking unit, wherein the LNG filling metering unit, the EAG discharge unit, the NG / N2 purge and replacement unit, the gasification and pressurization unit and the LNG filling pump skid unit are respectively fixed on the mobile walking unit, the LNG filling metering unit is respectively connected to the LNG receiving ship, the NG / N2 purge and replacement unit and the LNG filling pump skid unit correspondingly, the NG / N2 purge and replacement unit is respectively connected to the LNG filling metering unit and the LNG filling pump skid unit correspondingly, the gasification and pressurization unit is respectively connected to the LNG filling pump skid unit correspondingly, the LNG filling pump skid unit is respectively connected to the LNG filling metering unit, the NG / N2 purge and replacement unit, the gasification and pressurization unit and the mobile LNG tank container correspondingly, and the EAG discharge unit is respectively connected to the LNG filling metering unit, the LNG filling pump skid unit and the mobile LNG tank container correspondingly.

[0008] According to the above scheme, the mobile LNG tank container and the mobile walking unit can be flexibly moved on the filling terminal according to different LNG filling locations and requirements, and the mobile walking unit can flexibly arrange the positions of the LNG filling metering unit, EAG discharge unit, NG / N2 purge and replacement unit, gasification and pressurization unit and LNG filling pump skid unit according to different LNG filling locations and requirements.

[0009] According to the above scheme, the LNG filling metering unit is provided with process pipeline 1, process pipeline 2, process pipeline 3 and process pipeline 4, and process pipeline 1 is provided with break valve 1, manual valve 1, pneumatic valve 1, manual valve 2, check valve 1, safety valve 1, manual valve 3, flow meter 1, manual valve 4, pressure transmitter 1, temperature transmitter 1 and safety valve 2 in sequence, process pipeline 1 with break valve 1 at one end is connected to the gas phase pipeline on the LNG receiving ship through low-temperature metal hose 1, process pipeline 1 with safety valve 2 at one end is connected to the LNG filling pump skid unit, process pipeline 2 is provided with break valve 2, manual valve 5, pneumatic valve 2, manual valve 6, check valve 2, safety valve 3, solenoid valve, flow meter 2, manual valve 8, pressure transmitter 2, Temperature transmitter 2 and safety valve 4, process pipeline 2 with breakaway valve 2 at one end is connected to the liquid phase pipeline on the LNG receiving ship through low-temperature metal hose 2, process pipeline 1 with safety valve 4 at one end is connected to the LNG filling pump skid unit, manual valve 9 and check valve 3 are provided on process pipeline 3 in sequence, manual valve 10 and check valve 4 are provided on process pipeline 4 in sequence, manual valve 2 and check valve 1 on process pipeline 1 are connected to manual valve 6 and check valve 2 on process pipeline 2 through process pipeline 5, and manual valve 7 is provided on process pipeline 5, one end of process pipeline 3 and process pipeline 4 are both connected between check valve 2 and safety valve 3 on process pipeline 2, and the other ends of process pipeline 3 and process pipeline 4 are both connected to NG / N2 purge and replacement unit.

[0010] According to the above scheme, the gas phase pipeline is provided with an interface flange 1 which is convenient for fixed connection with a low-temperature metal hose 1, and the liquid phase pipeline is provided with an interface flange 2 which is convenient for fixed connection with a low-temperature metal hose 2.

[0011] According to the above scheme, the EAG discharge unit is provided with a process pipeline 21 and a discharge LNG collection pipeline, and the process pipeline 21 is provided with a flame arrester, a manual valve 11, a vaporizer 1 and a manual valve 12 in sequence, and the process pipeline 21 with one end of the manual valve 12 is connected to the discharge LNG collection pipeline.

[0012] According to the above scheme, the NG / N2 purge and replacement unit is provided with process pipeline 6, process pipeline 7 and process pipeline 8, and process pipeline 6 is provided with pneumatic valve 3, NG buffer tank, pressure regulating valve 1, pressure transmitter 3, temperature transmitter 3, pneumatic valve 4, vaporizer 2 and pneumatic valve 5 in sequence, process pipeline 6 provided with pneumatic valve 3 at one end is connected to process pipeline 7, process pipeline 6 provided with pneumatic valve 5 at one end is connected to LNG filling pump skid unit, process pipeline 7 and process pipeline 8 are both connected to N2 tank, one end of process pipeline 7 is connected to process pipeline 3 of LNG filling metering unit, the other end of process pipeline 7 is connected to LNG filling pump skid unit, one end of process pipeline 8 is connected to process pipeline 4 of LNG filling metering unit, and the other end of process pipeline 8 is connected to LNG filling pump skid unit.

[0013] According to the above scheme, a process pipeline nine is provided in the gasification and pressurization unit, on which a pressure regulating valve two, a pressure transmitter four, a temperature transmitter four, a pneumatic valve six, a gasifier three and a pneumatic valve seven are provided in sequence, and the air inlet end and the air outlet end of the process pipeline nine are respectively connected to the LNG filling pump skid unit.

[0014] According to the above scheme, the LNG filling pump skid unit is provided with process pipeline 10, process pipeline 11, process pipeline 12, process pipeline 13, process pipeline 14, process pipeline 15, process pipeline 16, process pipeline 17, process pipeline 18, process pipeline 19 and process pipeline 20, process pipeline 10 is provided with manual valve 18, pneumatic valve 9, manual valve 20 and disconnect valve 4 in sequence, process pipeline 11 is provided with pneumatic valve 10, process pipeline 12 is provided with safety valve 6, pressure transmitter 5 and temperature transmitter 5 in sequence, process pipeline 13 is provided with check valve 5 and manual valve 15, process pipeline 14 is provided with check valve 6 and manual valve 16, process pipeline 17 is provided with check valve 16 and manual valve 17, process pipeline 18 is provided with manual valve 17 and manual valve 18, process pipeline 18 is provided with manual valve 19 and manual valve 20, process pipeline 18 is provided with manual valve 18 and manual valve 19, process pipeline 18 is provided with manual valve 19 and manual valve 17, process pipeline 18 is provided with manual valve 19 and manual valve 18, process pipeline 18 is provided with manual valve 19 and manual valve 18, process pipeline 18 is provided with manual valve 19 and manual valve 19 ... The process pipeline 15 is provided with a manual valve 21, a pneumatic valve 11, a manual valve 22 and a break valve 5 in sequence, the process pipeline 16 is provided with a manual valve 13, a pneumatic valve 8, a manual valve 17 and a break valve 3 in sequence, the process pipeline 17 is provided with a pneumatic valve 13 and a pneumatic valve 14, a cryogenic submersible pump is provided between the pneumatic valve 13 and the pneumatic valve 14, the cryogenic submersible pump is connected to the process pipeline 18 and the process pipeline 19, the process pipeline 18 is provided with a pneumatic valve 12 and a check valve 7, the process pipeline 19 is provided with a safety valve 5, a pressure transmitter 6 and a temperature transmitter 6 in sequence, the process pipeline 20 is provided with a manual valve 19 and a manual valve 14.

[0015] According to the above scheme, the process pipeline 10 is connected to the gas outlet end of the gasification and boosting unit, the process pipeline 15 is connected to the gas inlet end of the gasification and boosting unit, one end of the process pipeline 10 is connected to the process pipeline 1 of the LNG filling and metering unit, the other end of the process pipeline 10 is connected to the gas phase port of the mobile LNG tank container through a low-temperature vacuum hose 1, one end of the process pipeline 11 is connected to the process pipeline 2 of the LNG filling and metering unit, the other end of the process pipeline 11 is connected between the safety valve 5 and the pressure transmitter 6 of the process pipeline 19, one end of the process pipeline 12 is connected to the process pipeline 6 of the NG / N2 purge and replacement unit, the other end of the process pipeline 12 is connected to the process pipeline 18, one end of the process pipeline 13 is connected to the process pipeline 7 of the NG / N2 purge and replacement unit, the other end of the process pipeline 13 is connected between the manual valve 13 and the pneumatic valve 8 of the process pipeline 16, one end of the process pipeline 14 is connected to the process pipeline 8 of the NG / N2 purge and replacement unit, and the process pipeline 15 is connected to the process pipeline 16 of the NG / N2 purge and replacement unit. The other end of process line fourteen is connected between manual valve thirteen and pneumatic valve eight of process pipeline sixteen, one end of process pipeline fifteen is connected between safety valve five and pressure transmitter six of process pipeline nineteen, the other end of process pipeline fifteen is connected to the pressurized liquid phase port of mobile LNG tank container through cryogenic vacuum hose two, one end of process pipeline sixteen is connected to process pipeline nineteen, the other end of process pipeline sixteen is connected to liquid phase port of mobile LNG tank container through cryogenic vacuum hose three, one end of process pipeline seventeen is connected to process pipeline ten, the other end of process pipeline seventeen is connected to cryogenic submersible pump, one end of process pipeline eighteen is connected to process pipeline eleven, the other end of process pipeline eighteen is connected to cryogenic submersible pump, process pipeline nineteen is connected to pneumatic valve fourteen on process pipeline seventeen, one end of process pipeline twenty is connected between manual valve eighteen and pneumatic valve nine on process pipeline ten, the other end of process pipeline twenty is connected between manual valve thirteen and pneumatic valve eight on process pipeline sixteen.

[0016] According to the above solution, the LNG filling metering unit, the LNG filling pump skid unit, and the discharge port of the mobile LNG tank container are connected to the discharge LNG collection pipeline of the EAG discharge unit.

[0017] Beneficial effects of the present invention:

[0018] 1) According to the configuration of different terminal types and receiving ports of receiving ships, the LNG bunkering process functions are integrated and installed to form an integrated structure with the mobile walking mechanism, which reduces the unnecessary exposure of LNG low-temperature pipelines and reduces the amount of BOG generated from the source. In addition, the mobile walking mechanism and the mobile LNG tank container can be flexibly arranged according to the actual situation of the bunkering terminal, and the bunkering operation is more adaptable;

[0019] 2) Integrated control of LNG filling metering unit, gasification and boosting unit and LNG filling pump skid unit, collecting signal data of pressure transmitter, temperature transmitter and flow transmitter of each system, coordinating control of gasification and boosting unit gasifier efficiency and LNG filling pump skid unit submersible pump working curve, so as to achieve safe, efficient and quantitative LNG filling;

[0020] 3) NG / N2 purge replacement unit, which replaces residual LNG by NG purge, and then uses N2 purge to replace NG purge to inertate the LNG filling process system pipelines and equipment, avoiding the safety risk of residual liquid leakage;

[0021] 4) The EAG discharge unit collects all safety valve outlet pipelines including mobile LNG tank containers and heats the discharged LNG to above -107°C through the vaporizer to ensure that its density is lower than that of air, thus avoiding the risk of low-temperature NG gas gathering in low places;

[0022] 5) There is no need to build fixed LNG filling, storage and transportation process facilities, and the operation is convenient. You only need to drag and drop the filling device and the mobile LNG tank container to the designated location, connect the process pipeline, set the LNG filling volume, and then you can start the filling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the overall structure diagram of the present invention;

[0024] Figure 2 This is a structural diagram of the LNG filling metering unit of the present invention;

[0025] Figure 3 It is a structural diagram of the EAG discharge unit of the present invention;

[0026] Figure 4 This is a structural diagram of the NG / N2 purge replacement unit of the present invention;

[0027] Figure 5 It is a structural diagram of the gasification and pressurization unit of the present invention;

[0028] Figure 6 It is a structural diagram of the LNG filling pump skid unit of the present invention.

[0029] 1. LNG receiving ship; 101. Gas phase pipeline; 102. Interface flange 1; 103. Liquid phase pipeline; 104. Interface flange 2; 2. LNG filling metering unit; 21. Breakaway valve 1; 22. Manual valve 1; 23. Pneumatic valve 1; 24. Manual valve 2; 25. Check valve 1; 26. Safety valve 1; 27. Manual valve 3; 28. Flow meter 1; 29. ​​Manual valve 4; 210. Pressure transmitter 1; 211. Temperature transmitter 1; 212. Safety valve 2; 213. Breakaway valve 2; 214. Manual valve 5; 215. Pneumatic valve 2; 216. Manual valve 6; 217. Manual valve 7; 218. Check valve 2; 219. Safety valve 3; 220. Solenoid valve; 221. Flow meter 2; 222. Manual Valve 8; 223. Pressure transmitter 2; 224. Temperature transmitter 2; 225. Safety valve 4; 226. Manual valve 9; 227. Check valve 3; 228. Manual valve 10; 229. Check valve 4; 230. Process pipeline 1; 231. Process pipeline 2; 232. Process pipeline 3; 233. Process pipeline 4; 234. Process pipeline 5; 3. EAG discharge unit; 31. Flame arrester; 32. Manual valve 11; 33. Vaporizer 1; 34. Manual valve 12; 35. Process pipeline 21; 36. Discharge LNG collection pipeline; 4. NG / N2 purge replacement unit; 41. Pneumatic valve 3; 42. NG buffer tank; 43. Pressure regulating valve 1; 44. Pressure transmitter 3; 45. Temperature transmitter 3; 46 . Pneumatic valve 4; 47. Vaporizer 2; 48. Pneumatic valve 5; 49. N2 tank; 410. Process pipeline 6; 411. Process pipeline 7; 412. Process pipeline 8; 5. Gasification booster unit; 51. Pressure regulating valve 2; 52. Pressure transmitter 4; 53. Temperature transmitter 4; 54. Pneumatic valve 6; 55. Vaporizer 3; 56. Pneumatic valve 7; 57. Process pipeline 9; 6. LNG filling pump skid unit; 61. Manual valve 13; 62. Manual valve 14; 63. Pneumatic valve 8; 64. Breakaway valve 3; 65. Manual valve 15; 66. Manual valve 16; 67. Manual valve 17; 68. Check valve 5; 69. Check valve 6; 610. Manual valve 18; 611. Pneumatic valve 9; 612. Breakaway valve 4; 61 3. Manual valve 19; 614. Manual valve 20; 615. Safety valve 5; 616. Pneumatic valve 10; 617. Manual valve 21; 618. Pneumatic valve 11; 619. Breakaway valve 5; 620. Manual valve 22; 621. Safety valve 6; 622. Pressure transmitter 5; 623. Temperature transmitter 5; 624. Pneumatic valve 12; 625. Pressure transmitter 6; 626. Temperature transmitter 6; 627. Pneumatic valve 13; 628. Check valve 7; 629. Pneumatic valve 14; 630. Cryogenic submersible pump; 631. Process pipeline 10; 632. Process pipeline 11; 633. Process pipeline 12; 634. Process pipeline 13; 635. Process pipeline 14; 636. Process pipeline 15; 637.Process pipeline 16; 638. Process pipeline 17; 639. Process pipeline 18; 640. Process pipeline 19; 641. Process pipeline 20; 7. Mobile LNG tank container; 71. Liquid phase port; 72. Pressurized liquid phase port; 73. Gas phase port; 74. Liquid release port; 8. Filling dock; 9. Cryogenic metal hose 1; 10. Cryogenic metal hose 2; 11. Cryogenic vacuum hose 1; 12. Cryogenic vacuum hose 2; 13. Cryogenic vacuum hose 3; 14. Mobile walking unit. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is described below in conjunction with the accompanying drawings and embodiments.

[0031] like Figures 1 to 6 As shown, a mobile LNG tank container filling terminal process device system of the present invention comprises an LNG receiving ship 1, an LNG filling metering unit 2, an EAG discharge unit 3, an NG / N2 purge replacement unit 4, a gasification and pressurization unit 5, an LNG filling pump skid unit 6, a mobile LNG tank container 7 and a mobile walking unit 14, wherein the LNG filling metering unit 2, the EAG discharge unit 3, the NG / N2 purge replacement unit 4, the gasification and pressurization unit 5 and the LNG filling pump skid unit 6 are respectively fixed on the mobile walking unit 14, and the LNG filling metering unit 2 is respectively connected to the LNG receiving ship 1, the LNG filling metering unit 2, the EAG discharge unit 3, the NG / N2 purge replacement unit 4, the gasification and pressurization unit 5 and the LNG filling pump skid unit 6 The G / N2 purge replacement unit 4 and the LNG filling pump skid unit 6 are connected correspondingly, the NG / N2 purge replacement unit 4 is connected correspondingly to the LNG filling metering unit 2 and the LNG filling pump skid unit 6, the gasification booster unit 5 is connected correspondingly to the LNG filling pump skid unit 6, the LNG filling pump skid unit 6 is connected correspondingly to the LNG filling metering unit 2, the NG / N2 purge replacement unit 4, the gasification booster unit 5 and the mobile LNG tank container 7, and the EAG discharge unit 3 is connected correspondingly to the LNG filling metering unit 2, the LNG filling pump skid unit 6 and the mobile LNG tank container 7. The above constitutes the basic structure of the present invention.

[0032] In this embodiment, the mobile LNG tank container 7 and the mobile walking unit 14 can be flexibly moved on the filling dock 8 according to different LNG filling locations and requirements, and the mobile walking unit 14 can flexibly arrange the positions of the LNG filling metering unit 2, EAG discharge unit 3, NG / N2 purge and replacement unit 4, gasification and pressurization unit 5 and LNG filling pump skid unit 6 according to different LNG filling locations and requirements.

[0033] In this embodiment, the LNG filling metering unit 2 is provided with a process pipeline 1 230, a process pipeline 2 231, a process pipeline 3 232 and a process pipeline 4 233. The process pipeline 1 230 is provided with a break valve 1 21, a manual valve 1 22, a pneumatic valve 1 23, a manual valve 2 24, a check valve 1 25, a safety valve 1 26, a manual valve 3 27, a flow meter 1 28, a manual valve 4 29, a pressure transmitter 1 210, a temperature transmitter 1 211 and a safety valve 2 212 in sequence. The process pipeline 1 230 at one end of the process pipeline 1 21 is connected to the gas phase pipeline 101 on the LNG receiving ship 1 through a low-temperature metal hose 1 9, and is provided with a safety valve 2 212. The process pipeline 1 230 at one end is connected to the LNG filling pump skid unit 6. The process pipeline 2 231 is provided with a break valve 2 213, a manual valve 5 214, a pneumatic valve 2 215, a manual valve 6 216, a check valve 2 218, a safety valve 3 219, a solenoid valve 220, a flow meter 2 221, a manual valve 8 222, and a pressure transmitter 2 22 3. Temperature transmitter 224 and safety valve 425. Process pipeline 231 with one end of breakaway valve 213 is connected to liquid pipeline 103 on LNG receiving vessel 1 through low temperature metal hose 210. Process pipeline 1 230 with one end of safety valve 4225 is connected to LNG filling pump skid unit 6. Manual valve 9 226 and check valve 3 227 are arranged on process pipeline 3 232 in sequence. Manual valve 10 228 and check valve 4 229 are arranged on process pipeline 4 233 in sequence. Process pipeline 1 231 is connected to liquid pipeline 103 on LNG receiving vessel 1 through low temperature metal hose 210. Process pipeline 1 230 with one end of safety valve 4225 is connected to LNG filling pump skid unit 6. Manual valve 9 226 and check valve 3 227 are arranged on process pipeline 3 232 in sequence. Manual valve 10 228 and check valve 4 229 are arranged on process pipeline 4 233 in sequence. The manual valve two 24 and the check valve one 25 on 30 are connected to the manual valve six 216 and the check valve two 218 on the process pipeline two 231 through the process pipeline five 234, and a manual valve seven 217 is provided on the process pipeline five 234, one end of the process pipeline three 232 and the process pipeline four 233 are connected to the check valve two 218 and the safety valve three 219 on the process pipeline two 231, and the other ends of the process pipeline three 232 and the process pipeline four 233 are connected to the NG / N2 purge replacement unit 4.

[0034] In practical applications, the LNG filling metering unit 2 is interlocked with a flow meter and a pneumatic valve to control the quantitative filling of LNG.

[0035] In this embodiment, the gas phase pipeline 101 is provided with an interface flange 102 for easy fixed connection with the low-temperature metal hose 19, and the liquid phase pipeline 103 is provided with an interface flange 104 for easy fixed connection with the low-temperature metal hose 10.

[0036] In this embodiment, the EAG discharge unit 3 is provided with a process pipeline 21 35 and a discharge LNG collection pipeline 36, and the process pipeline 21 35 is provided with a flame arrester 31, a manual valve 11 32, a vaporizer 1 33 and a manual valve 12 34 in sequence, and the process pipeline 21 35 with one end of the manual valve 12 34 is connected to the discharge LNG collection pipeline 36.

[0037] In practical applications, the EAG discharge unit 3 heats the discharged LNG through the vaporizer 33 to a temperature above -107 degrees, ensuring that its density is lower than that of air for safe dissipation.

[0038] In this embodiment, the NG / N2 purge replacement unit 4 is provided with a process pipeline 6 410, a process pipeline 7 411 and a process pipeline 8 412. The process pipeline 6 410 is provided with a pneumatic valve 3 41, an NG buffer tank 42, a pressure regulating valve 1 43, a pressure transmitter 3 44, a temperature transmitter 3 45, a pneumatic valve 4 46, a vaporizer 2 47 and a pneumatic valve 5 48 in sequence. The process pipeline 6 410 provided with a pneumatic valve 3 41 at one end is connected to the process pipeline 7 411, and the process pipeline 6 410 provided with a pneumatic valve 3 41 at one end is connected to the process pipeline 7 411, and the process pipeline 6 410 provided with a pneumatic valve 5 48 at one end is connected to the process pipeline 7 411. Process pipeline six 410 is connected to the LNG filling pump skid unit 6, process pipeline seven 411 and process pipeline eight 412 are both connected to the N2 tank 49, one end of process pipeline seven 411 is connected to process pipeline three 232 of the LNG filling metering unit 2, and the other end of process pipeline seven 411 is connected to the LNG filling pump skid unit 6, one end of process pipeline eight 412 is connected to process pipeline four 233 of the LNG filling metering unit 2, and the other end of process pipeline eight 412 is connected to the LNG filling pump skid unit 6.

[0039] In practical applications, the NG / N2 purge and replacement unit 4 is used to purge and replace residual materials and inertate the pipeline system before and after LNG bunkering.

[0040] In this embodiment, the gasification and boosting unit 5 is provided with a process pipeline nine 57, on which a pressure regulating valve two 51, a pressure transmitter four 52, a temperature transmitter four 53, a pneumatic valve six 54, a gasifier three 55 and a pneumatic valve seven 56 are sequentially provided, and the air inlet end and the air outlet end of the process pipeline nine 57 are respectively connected to the LNG filling pump skid unit 6.

[0041] In practical applications, the gasification and pressurization unit 5 is used to pressurize the mobile LNG tank 7 .

[0042] In this embodiment, the LNG filling pump skid unit 6 is provided with a process pipeline 10 631, a process pipeline 11 632, a process pipeline 12 633, a process pipeline 13 634, a process pipeline 14 635, a process pipeline 15 636, a process pipeline 16 637, a process pipeline 17 638, a process pipeline 18 639, a process pipeline 19 640 and a process pipeline 20 641. The process pipeline 10 631 is provided with a manual valve 18 610, a pneumatic valve 9 611, a manual valve 20 614 and a disconnect valve 4 612 in sequence. The process pipeline 11 632 is provided with a pneumatic valve 10 616. The process pipeline 12 633 is provided with a safety valve 6 621, a pressure transmitter 5 622 and a temperature transmitter 5 623 in sequence. The process pipeline 13 634 is provided with a check valve 5 68 and a manual valve 15 65. The process pipeline 14 635 is provided with a check valve 6 69 and a manual valve 10 Sixteen 66, the process pipeline fifteen 636 is provided with a manual valve twenty-one 617, a pneumatic valve eleven 618, a manual valve twenty-two 620 and a break valve five 619 in sequence, the process pipeline sixteen 637 is provided with a manual valve thirteen 61, a pneumatic valve eight 63, a manual valve seventeen 67 and a break valve three 64 in sequence, the process pipeline seventeen 638 is provided with a pneumatic valve thirteen 627 and a pneumatic valve fourteen 629, a cryogenic submersible pump 630 is provided between the pneumatic valve thirteen 627 and the pneumatic valve fourteen 629, the cryogenic submersible pump 630 is connected to the process pipeline eighteen 639 and the process pipeline nineteen 640, the process pipeline eighteen 639 is provided with a pneumatic valve twelve 624 and a check valve seven 628, the process pipeline nineteen 640 is provided with a safety valve five 615, a pressure transmitter six 625 and a temperature transmitter six 626 in sequence, the process pipeline twenty 641 is provided with a manual valve nineteen 613 and a manual valve fourteen 62.

[0043] In actual applications, the LNG filling pump skid unit 6 is used to pressurize and fill the LNG in the mobile LNG tank container 7 to the receiving ship 1 .

[0044] In this embodiment, the process pipeline ten 631 is connected to the gas outlet end of the gasification and boosting unit 5, the process pipeline fifteen 636 is connected to the gas inlet end of the gasification and boosting unit 5, one end of the process pipeline ten 631 is connected to the process pipeline one 230 of the LNG filling metering unit 2, the other end of the process pipeline ten 631 is connected to the gas phase port 73 of the mobile LNG tank box 7 through a low-temperature vacuum hose one 11, one end of the process pipeline eleven 632 is connected to the process pipeline two 231 of the LNG filling metering unit 2, and the other end of the process pipeline eleven 632 is connected to the safety valve five 615 and the pressure of the process pipeline nineteen 640. The transmitter 6 625, one end of the process pipeline 12 633 is connected to the process pipeline 6 410 of the NG / N2 purge replacement unit 4, the other end of the process pipeline 12 633 is connected to the process pipeline 18 639, one end of the process pipeline 13 634 is connected to the process pipeline 7 411 of the NG / N2 purge replacement unit 4, the other end of the process pipeline 13 634 is connected between the manual valve 13 61 and the pneumatic valve 8 63 of the process pipeline 16 637, one end of the process pipeline 14 635 is connected to the process pipeline 8 412 of the NG / N2 purge replacement unit 4, and the other end of the process pipeline 14 635 is connected to the process pipeline 8 413 of the NG / N2 purge replacement unit 4. The process pipeline 16 637 is connected between the manual valve 13 61 and the pneumatic valve 8 63. One end of the process pipeline 15 636 is connected between the safety valve 5 615 and the pressure transmitter 6 625 of the process pipeline 19 640. The other end of the process pipeline 15 636 is connected to the pressurized liquid phase port 72 of the mobile LNG tank container 7 through the low-temperature vacuum hose 2 12. One end of the process pipeline 16 637 is connected to the process pipeline 19 640. The other end of the process pipeline 16 637 is connected to the liquid phase port 71 of the mobile LNG tank container 7 through the low-temperature vacuum hose 3 13. One end of the process pipeline 17 638 is connected to the process pipeline 18 Process pipeline ten 631, the other end of process pipeline seventeen 638 is connected to the cryogenic submersible pump 630, one end of process pipeline eighteen 639 is connected to process pipeline eleven 632, the other end of process pipeline eighteen 639 is connected to the cryogenic submersible pump 630, process pipeline nineteen 640 is connected to the pneumatic valve fourteen 629 on process pipeline seventeen 638, one end of process pipeline twenty 641 is connected between manual valve eighteen 610 and pneumatic valve nine 611 on process pipeline ten 631, and the other end of process pipeline twenty 641 is connected between manual valve thirteen 61 and pneumatic valve eight 63 on process pipeline sixteen 637.

[0045] In this embodiment, the liquid discharge ports 01 - 12 of the LNG filling metering unit 2 , the LNG filling pump skid unit 6 , and the mobile LNG tank container 7 are connected to the discharge LNG collection pipeline 36 of the EAG discharge unit 3 .

[0046] Working principle of the present invention:

[0047] 1. Purge and replacement operation

[0048] Open manual valve ten 228, manual valve six 216, manual valve five 214 and manual valve two 24, and open pneumatic valve one 23, pneumatic valve two 215 and manual valve seven 217 to use the N2 tank 49 of the NG / N2 purge replacement unit 4 to purge and replace the air inside the cryogenic metal hose one 9 and the cryogenic metal hose two 10 between the LNG bunkering metering unit 2 and the LNG receiving ship 1; close manual valve ten 228, open manual valve nine 226 and pneumatic valve three 41, and use the NG buffer tank 42 of the NG / N2 purge replacement unit 4 to purge and replace the nitrogen inside the cryogenic metal hose one 9 and the cryogenic metal hose two 10 between the LNG bunkering metering unit 2 and the LNG receiving ship 1.

[0049] Open manual valve sixteen 66, manual valve fourteen 62 and manual valve nineteen 613, and open pneumatic valve eight 63, pneumatic valve eleven 618 and pneumatic valve nine 611 to use the N2 tank 49 of the NG / N2 purge replacement unit 4 to purge and replace the air inside the hose between the LNG filling pump skid unit 6 and the mobile LNG tank container 7; close manual valve sixteen 66, open manual valve fifteen 65 and pneumatic valve three 41 to use the NG buffer tank 42 of the NG / N2 purge replacement unit 4 to purge and replace the nitrogen inside the cryogenic vacuum hose one 11, cryogenic vacuum hose two 12 and cryogenic vacuum hose three 13 between the LNG filling pump skid unit 6 and the mobile LNG tank container 7.

[0050] 2. Filling Operation

[0051] After the above preparations are completed, the LNG receiving ship 1 and the mobile LNG tank container 7 are notified to prepare for filling. Among them, the mobile LNG tank container filling terminal process equipment system described in the present invention can flexibly select three different filling methods: gasification and pressurization filling, filling pump pressurization filling and gasification and pressurization filling pump combined filling in combination with the different fuel tank parameters of the LNG receiving ship 1.

[0052] ①Gasification, pressurization and filling method

[0053] Open manual valve twenty-one 617, manual valve eighteen 610, manual valve thirteen 61, manual valve eight 222 and manual valve six 216, and open pneumatic valve seven 56, pneumatic valve six 54, pneumatic valve nine 611, pneumatic valve eleven 618, pneumatic valve eight 63, pneumatic valve ten 616, pneumatic valve two 215 and solenoid valve 220. LNG enters the gasifier 55 of the gasification and pressurization unit 5 through the pressurized liquid phase port 72 of the mobile LNG tank container 7. After gasification, LNG enters the gas phase space of the mobile LNG tank container 7 through the gas phase port 73 of the mobile LNG tank container 7 to increase its gas phase pressure, so that LNG enters the liquid phase pipeline 103 of the LNG receiving ship 1 and the interface flange two 104 through the liquid phase port 71 of the mobile LNG tank container 7 and is injected into the fuel tank. The LNG filling metering unit 2 monitors the pressure, temperature and flow data in real time and compares the filling flow with the set flow data, and controls the filling flow through the opening of the solenoid valve 220. When the set flow is finally reached, the solenoid valve 220 is completely closed.

[0054] ② Filling pump booster filling method

[0055] Open manual valve 13 61, manual valve 8 222, manual valve 6 216, manual valve 2 24, manual valve 3 27, manual valve 4 29 and manual valve 18 610, and open pneumatic valve 8 63, pneumatic valve 14 629, pneumatic valve 12 624, pneumatic valve 2 215, pneumatic valve 1 23, pneumatic valve 9 611 and solenoid valve 220. LNG enters the cryogenic submersible pump 630 of the LNG filling pump skid unit 6 through the liquid phase port 71 of the mobile LNG tank container 7 for pressurization, and then enters the liquid phase pipeline 103 and interface flange 2 104 of the LNG receiving ship 1 through the LNG filling metering unit 2 to be injected into the fuel tank. The BOG of the LNG receiving ship 1 returns to the cryogenic submersible pump 630 of the LNG filling pump skid unit 6 and the gas phase space of the mobile LNG tank container 7 through the gas phase pipeline 101 and interface flange 1 102 of the LNG receiving ship 1 and the LNG filling metering unit 2. The LNG filling metering unit 2 monitors the pressure, temperature and flow data in real time and compares the filling flow with the set flow data. The filling flow is controlled by the opening of the solenoid valve 220 and the speed of the cryogenic submersible pump 630 of the LNG filling pump skid unit 6. When the set flow is finally reached, the solenoid valve 220 is completely closed and the operation of the cryogenic submersible pump 630 is stopped.

[0056] ③Gasification booster filling pump combined filling method

[0057] Open the manual valve 13 61, the manual valve 18 610, the manual valve 21 617, the manual valve 24, the manual valve 3 27, the manual valve 4 29, the manual valve 6 216 and the manual valve 8 222, and open the pneumatic valve 8 63, the pneumatic valve 9 611, the pneumatic valve 11 618, the pneumatic valve 10 616, the pneumatic valve 12 624, the pneumatic valve 14 629, the pneumatic valve 6 54, the pneumatic valve 7 56, the pneumatic valve 1 23, the pneumatic valve 2 215 and the solenoid valve 220. LNG enters the gasifier 3 55 of the gasification and pressurization unit 5 through the pressurized liquid phase port 72 of the mobile LNG tank container 7, and then enters the mobile LNG tank container 7 through the gas phase port 73. The gas phase pressure of the gas phase space of the NG tank container 7 is increased so that the LNG enters the low-temperature submersible pump 630 of the LNG filling pump skid unit 6 through the liquid phase port 71 of the mobile LNG tank container 7 for pressurization, and then enters the liquid phase pipeline 103 and the interface flange 2 104 of the LNG receiving ship 1 through the LNG filling metering unit 2 to be injected into the fuel tank. When the BOG pressure of the LNG receiving ship 1 is higher than the pressure after gasification of the vaporizer 3 55 of the gasification and pressurization unit 5, it returns to the low-temperature submersible pump 630 of the LNG filling pump skid unit 6 and the gas phase space of the mobile LNG tank container 7 through the gas phase pipeline 101 and the interface flange 102 of the LNG receiving ship 1 and the LNG filling metering unit 2. The LNG filling metering unit 2 monitors the pressure, temperature and flow data in real time and compares the filling flow with the set flow data. The filling flow is controlled by the opening of the solenoid valve 220 and the speed of the cryogenic submersible pump 630 of the LNG filling pump skid unit 6. When the set flow is finally reached, the solenoid valve 220 is completely closed and the operation of the cryogenic submersible pump 630 is stopped.

[0058] 3. Demolition work

[0059] Close manual valve ten 228, open manual valve nine 226 and pneumatic valve three 41, and use the NG buffer tank 42 of the NG / N2 purge replacement unit 4 to purge and replace the LNG inside the cryogenic metal hose one 9 and the cryogenic metal hose two 10 between the LNG bunkering metering unit 2 and the LNG receiving ship 1; open manual valve ten 228, manual valve six 216, manual valve five 214, manual valve two 24, and open pneumatic valve one 23, pneumatic valve two 215, manual valve seven 217, and use the N2 tank 49 of the NG / N2 purge replacement unit 4 to purge and replace the NG inside the cryogenic metal hose one 9 and the cryogenic metal hose two 10 between the LNG bunkering metering unit 2 and the LNG receiving ship 1.

[0060] Close manual valve sixteen 66, open manual valve fifteen 65 and pneumatic valve three 41, and use the NG buffer tank 42 of the NG / N2 purge replacement unit 4 to purge and replace the LNG inside the cryogenic vacuum hose one 11, cryogenic vacuum hose two 12 and cryogenic vacuum hose three 13 between the LNG filling pump skid unit 6 and the mobile LNG tank container 7; open manual valve sixteen 66, manual valve fourteen 62 and manual valve nineteen 613, and open pneumatic valve eight 63, pneumatic valve eleven 618 and pneumatic valve nine 611, and use the N2 tank 49 of the NG / N2 purge replacement unit 4 to purge and replace the NG inside the cryogenic vacuum hose one 11, cryogenic vacuum hose two 12 and cryogenic vacuum hose three 13 between the LNG filling pump skid unit 6 and the mobile LNG tank container 7.

[0061] After the above-mentioned purging and replacement work is completed, open manual valve 1 22, manual valve 5 214, manual valve 20 614, manual valve 22 620 and manual valve 17 67 to release the pressure, then remove the low-temperature metal hose 1 9, low-temperature metal hose 2 10, low-temperature vacuum hose 1 11, low-temperature vacuum hose 2 12 and low-temperature vacuum hose 3 13 and the metal hoses between the liquid discharge port 74 of the mobile LNG tank container 7 and the corresponding nodes of the EAG discharge unit 3, and the LNG receiving ship 1 and the mobile LNG tank container 7 leave the filling terminal 8.

[0062] It can be seen from the above structure that the mobile LNG tank container filling terminal process device system of the present invention has the following advantages:

[0063] 1) According to the configuration of different terminal types and receiving ports of receiving ships, the functions of various LNG bunkering processes are integrated and installed to form an integrated structure with the mobile traveling mechanism, which reduces the unnecessary exposure of LNG low-temperature pipelines and reduces the amount of BOG generated from the source. In addition, the mobile traveling mechanism and the mobile LNG tank container can be flexibly arranged according to the actual situation of the bunkering terminal, making the bunkering operation more adaptable;

[0064] 2) The LNG filling metering unit 2, the gasification and boosting unit 5 and the LNG filling pump skid unit 6 are integrated and controlled to collect the signal data of the pressure transmitter, temperature transmitter and flow transmitter of each system, and coordinately control the gasifier efficiency of the gasification and boosting unit 5 and the working curve of the submersible pump of the LNG filling pump skid unit 6 to achieve the purpose of safe, efficient and quantitative LNG filling;

[0065] 3) NG / N2 purge replacement unit 4, which replaces the residual LNG by NG purge, and then uses N2 purge to replace the NG purge to inertate the LNG filling process system pipelines and equipment, avoiding the safety risk of residual liquid leakage;

[0066] 4) The EAG discharge unit 3 collects all safety valve outlet pipelines including the mobile LNG tank 7 and heats the discharged LNG to above -107°C through the vaporizer to ensure that its density is lower than that of air, thus avoiding the risk of low-temperature NG gas gathering in low places;

[0067] 5) There is no need to build fixed LNG filling storage and transportation process facilities, and the operation is convenient. It only needs to drag and drop the filling device and the mobile LNG tank box 7 to the designated location, connect the process pipeline, set the LNG filling amount, and then the filling operation can be carried out.

[0068] The mobile LNG tank container filling terminal process device system of the present invention can be used not only in the LNG filling terminal 8, but also in other low-temperature quantitative transportation systems, such as LNG, LPG tank trucks, and tank container filling systems.

[0069] The technical solutions in the embodiments of the present invention are described above, but the present invention is not limited to the above-mentioned specific implementation modes. The above-mentioned specific implementation modes are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which all belong to the protection scope of the present invention.

Claims

1. A mobile LNG tank container filling terminal process device system, characterized by: The invention comprises an LNG receiving ship (1), an LNG filling metering unit (2), an EAG discharge unit (3), an NG / N2 purge replacement unit (4), a gasification and pressurization unit (5), an LNG filling pump skid unit (6), a mobile LNG tank container (7) and a mobile walking unit (14), wherein the LNG filling metering unit (2), the EAG discharge unit (3), the NG / N2 purge replacement unit (4), the gasification and pressurization unit (5) and the LNG filling pump skid unit (6) are respectively fixed on the mobile walking unit (14), and the LNG filling metering unit (2) is respectively connected to the LNG receiving ship (1), the NG / N2 purge replacement unit (4) and the LNG tank container (7). The NG filling pump skid unit (6) is connected to the LNG filling metering unit (2) and the LNG filling pump skid unit (6), the NG / N2 purge replacement unit (4) is connected to the LNG filling metering unit (2) and the LNG filling pump skid unit (6), the gasification booster unit (5) is connected to the LNG filling pump skid unit (6), the LNG filling pump skid unit (6) is connected to the LNG filling metering unit (2), the NG / N2 purge replacement unit (4), the gasification booster unit (5) and the mobile LNG tank container (7), and the EAG discharge unit (3) is connected to the LNG filling metering unit (2), the LNG filling pump skid unit (6) and the mobile LNG tank container (7); The mobile LNG tank container (7) and the mobile walking unit (14) can be flexibly moved on the filling dock (8) according to different LNG filling locations and requirements, and the mobile walking unit (14) can flexibly arrange the positions of the LNG filling metering unit (2), the EAG discharge unit (3), the NG / N2 purge replacement unit (4), the gasification and pressurization unit (5) and the LNG filling pump skid unit (6) according to different LNG filling locations and requirements; The LNG filling metering unit (2) is provided with a process pipeline 1 (230), a process pipeline 2 (231), a process pipeline 3 (232) and a process pipeline 4 (233). The process pipeline 1 (230) is provided with a breakaway valve 1 (21), a manual valve 1 (22), a pneumatic valve 1 (23), a manual valve 2 (24), a check valve 1 (25), a safety valve 1 (26), a manual valve 3 (27), a flow meter 1 (28), a manual valve 4 (29), a pressure transmitter 1 (210), a temperature transmitter 1 (211) and a safety valve 2 (212) in sequence. The process pipeline 1 (230) at one end is connected to the gas phase pipeline (101) on the LNG receiving ship (1) through a low temperature metal hose 1 (9), and is provided with a safety valve 2 (212). The process pipeline 1 (230) at one end is connected to the LNG filling pump skid unit (6), and the process pipeline 2 (231) is provided with a breakaway valve 2 (213), a manual valve 5 (214), a pneumatic valve 2 (215), a manual valve 6 (216), a check valve 2 (218), a safety valve 3 (219), a solenoid valve (220), a flow meter 2 (221), a manual valve 8 (222), a pressure transmitter 2 (223), a temperature sensor 1 (224), and a pressure transmitter 2 (225). A second process pipeline (231) having a breakaway valve (213) at one end thereof is connected to a liquid phase pipeline (103) on an LNG receiving vessel (1) through a second cryogenic metal hose (10), a first process pipeline (230) having a safety valve (225) at one end thereof is connected to an LNG filling pump skid unit (6), a manual valve (226) and a check valve (227) are sequentially arranged on the first process pipeline (232), a manual valve (228) and a check valve (229) are sequentially arranged on the second process pipeline (233), and a manual valve (229) and a check valve (221) are sequentially arranged on the second process pipeline (231). The manual valve 2 (24) and the check valve 1 (25) on the process pipeline 30) are connected to the manual valve 6 (216) and the check valve 2 (218) on the process pipeline 2 (231) through the process pipeline 5 (234), and the manual valve 7 (217) is provided on the process pipeline 5 (234), one end of the process pipeline 3 (232) and the process pipeline 4 (233) are connected to the check valve 2 (218) and the safety valve 3 (219) on the process pipeline 2 (231), and the other end of the process pipeline 3 (232) and the process pipeline 4 (233) are connected to the NG / N2 purge replacement unit (4).

2. A mobile LNG tank container filling terminal process device system according to claim 1, characterized in that: The gas phase pipeline (101) is provided with an interface flange 1 (102) for convenient fixed connection with a low temperature metal hose 1 (9), and the liquid phase pipeline (103) is provided with an interface flange 2 (104) for convenient fixed connection with a low temperature metal hose 2 (10).

3. A mobile LNG tank container filling terminal process device system according to claim 1, characterized in that: The EAG discharge unit (3) is provided with a process pipeline 21 (35) and a discharge LNG collection pipeline (36); the process pipeline 21 (35) is provided with a flame arrester (31), a manual valve 11 (32), a vaporizer 1 (33) and a manual valve 12 (34) in sequence; the process pipeline 21 (35) provided with one end of the manual valve 12 (34) is connected to the discharge LNG collection pipeline (36).

4. A mobile LNG tank container filling terminal process device system according to claim 1, characterized in that: The NG / N2 purge replacement unit (4) is provided with a process pipeline six (410), a process pipeline seven (411) and a process pipeline eight (412). The process pipeline six (410) is provided with a pneumatic valve three (41), an NG buffer tank (42), a pressure regulating valve one (43), a pressure transmitter three (44), a temperature transmitter three (45), a pneumatic valve four (46), a vaporizer two (47) and a pneumatic valve five (48) in sequence. The process pipeline six (410) provided with a pneumatic valve three (41) at one end is connected to the process pipeline seven (411), and the process pipeline six (410) provided with a pneumatic valve five (48) at one end is connected to the process pipeline seven (411). (410) is connected to the LNG filling pump skid unit (6), the process pipeline seven (411) and the process pipeline eight (412) are both connected to the N2 tank (49), one end of the process pipeline seven (411) is connected to the process pipeline three (232) of the LNG filling metering unit (2), and the other end of the process pipeline seven (411) is connected to the LNG filling pump skid unit (6), one end of the process pipeline eight (412) is connected to the process pipeline four (233) of the LNG filling metering unit (2), and the other end of the process pipeline eight (412) is connected to the LNG filling pump skid unit (6).

5. The mobile LNG tank container filling terminal process device system according to claim 1 is characterized by: The gasification and pressurization unit (5) is provided with a process pipeline nine (57), on which a pressure regulating valve two (51), a pressure transmitter four (52), a temperature transmitter four (53), a pneumatic valve six (54), a gasifier three (55) and a pneumatic valve seven (56) are provided in sequence, and the air inlet end and the air outlet end of the process pipeline nine (57) are respectively connected to the LNG filling pump skid unit (6).

6. A mobile LNG tank container filling terminal process device system according to claim 5, characterized in that: The LNG filling pump skid unit (6) is provided with a process pipeline 10 (631), a process pipeline 11 (632), a process pipeline 12 (633), a process pipeline 13 (634), a process pipeline 14 (635), a process pipeline 15 (636), a process pipeline 16 (637), a process pipeline 17 (638), a process pipeline 18 (639), a process pipeline 19 (640) and a process pipeline 20 (641), and the process pipeline 10 (631) is provided with a manual valve 18 (610), a pneumatic valve 19 (641) in sequence. A valve nine (611), a manual valve twenty (614) and a disconnect valve four (612); a pneumatic valve ten (616) is provided on the process pipeline eleven (632); a safety valve six (621), a pressure transmitter five (622) and a temperature transmitter five (623) are provided on the process pipeline twelve (633); a check valve five (68) and a manual valve fifteen (65) are provided on the process pipeline thirteen (634); a check valve six (69) and a manual valve sixteen (66) are provided on the process pipeline fourteen (635); The process pipeline 15 (636) is provided with a manual valve 21 (617), a pneumatic valve 11 (618), a manual valve 22 (620) and a break valve 5 (619) in sequence. The process pipeline 16 (637) is provided with a manual valve 13 (61), a pneumatic valve 8 (63), a manual valve 17 (67) and a break valve 3 (64) in sequence. The process pipeline 17 (638) is provided with a pneumatic valve 13 (627) and a pneumatic valve 14 (629). A low-temperature submersible pump (630) is provided in between, and the low-temperature submersible pump (630) is connected to process pipeline 18 (639) and process pipeline 19 (640). The process pipeline 18 (639) is provided with a pneumatic valve 12 (624) and a check valve 7 (628). The process pipeline 19 (640) is provided with a safety valve 5 (615), a pressure transmitter 6 (625) and a temperature transmitter 6 (626) in sequence. The process pipeline 20 (641) is provided with a manual valve 19 (613) and a manual valve 14 (62).

7. A mobile LNG tank container filling terminal process device system according to claim 6, characterized in that: The process pipeline ten (631) is connected to the gas outlet end of the gasification and boosting unit (5), the process pipeline fifteen (636) is connected to the gas inlet end of the gasification and boosting unit (5), one end of the process pipeline ten (631) is connected to the process pipeline one (230) of the LNG filling and metering unit (2), the other end of the process pipeline ten (631) is connected to the gas phase port (73) of the mobile LNG tank box (7) through the low-temperature vacuum hose one (11), one end of the process pipeline eleven (632) is connected to the process pipeline two (231) of the LNG filling and metering unit (2), and the other end of the process pipeline eleven (632) is connected to the safety valve five (615) and the pressure transmitter six (620) of the process pipeline nineteen (640). 5), one end of the process pipeline 12 (633) is connected to the process pipeline 6 (410) of the NG / N2 purge replacement unit (4), the other end of the process pipeline 12 (633) is connected to the process pipeline 18 (639), one end of the process pipeline 13 (634) is connected to the process pipeline 7 (411) of the NG / N2 purge replacement unit (4), the other end of the process pipeline 13 (634) is connected between the manual valve 13 (61) and the pneumatic valve 8 (63) of the process pipeline 16 (637), one end of the process pipeline 14 (635) is connected to the process pipeline 8 (412) of the NG / N2 purge replacement unit (4), the other end of the process pipeline 14 (635) is connected to the process pipeline 16 (637) between the manual valve 13 (61) and the pneumatic valve 8 (63), one end of the process pipeline 14 (635) is connected to the process pipeline 16 (637) between the manual valve 13 (61) and the pneumatic valve 8 (63), The manual valve 13 (61) and the pneumatic valve 8 (63) of the pipeline 16 (637) are connected between the safety valve 5 (615) and the pressure transmitter 6 (625) of the process pipeline 19 (640); the other end of the process pipeline 15 (636) is connected to the pressurized liquid phase port (72) of the mobile LNG tank container (7) through the low-temperature vacuum hose 2 (12); the process pipeline 16 (637) is connected to the process pipeline 19 (640); the other end of the process pipeline 16 (637) is connected to the liquid phase port (71) of the mobile LNG tank container (7) through the low-temperature vacuum hose 3 (13); and the process pipeline 17 (638) is connected to the process pipeline 10. (631), the other end of the process pipeline seventeen (638) is connected to the cryogenic submersible pump (630), one end of the process pipeline eighteen (639) is connected to the process pipeline eleven (632), the other end of the process pipeline eighteen (639) is connected to the cryogenic submersible pump (630), the process pipeline nineteen (640) is connected to the pneumatic valve fourteen (629) on the process pipeline seventeen (638), one end of the process pipeline twenty (641) is connected between the manual valve eighteen (610) and the pneumatic valve nine (611) on the process pipeline ten (631), and the other end of the process pipeline twenty (641) is connected between the manual valve thirteen (61) and the pneumatic valve eight (63) on the process pipeline sixteen (637).

8. The mobile LNG tank container filling terminal process device system according to claim 6 is characterized by: The liquid discharge ports 01-12 of the LNG filling metering unit (2), the LNG filling pump skid unit (6) and the mobile LNG tank box (7) are connected to the LNG discharge collection pipeline (36) of the EAG discharge unit (3).

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