Offshore tank reversing refueling system

Abstract

The invention belongs to the technical field of offshore refueling, and discloses an offshore inverted tank refueling system which comprises a first hose, an aviation oil pump, a filter separator, a flow meter, an automatic regulating valve and a second hose which are sequentially connected, and the filter separator is provided with a first communication port, a second communication port, a third communication port, a fourth communication port and a fifth communication port. The first communicating port is communicated with an aviation oil pump, the second communicating port is communicated with a flowmeter, the third communicating port is used for being connected with an oil discharging pipe and used for releasing residual oil to an external device, the fourth communicating port is communicated with a first oil port of an oil return tank through an exhaust valve, and the fifth communicating port is communicated with a first pipeline between the aviation oil pump and a first hose. A second oil port of the oil return tank communicates with the first pipeline, the connecting position is located on the upstream of the connecting position of the fifth communicating port and the first pipeline, and the oil return tank is further provided with an oil discharging port used for releasing residual oil. The offshore tank reversing refueling system is relatively simple in structure, relatively small in supply mode limitation, relatively good in compatibility and relatively high in working safety.

Description

Technical Field

[0001] The invention relates to the technical field of offshore refueling, and in particular to an offshore tank refueling system. Background Art

[0002] In the prior art, offshore structures such as offshore platforms or ships are equipped with offshore platform helicopter refueling systems, which can refuel helicopters and other flying equipment, and can also extract aviation fuel from helicopters to facilitate the maintenance of flying equipment. The existing refueling system has a relatively complex structure, and the fuel supply method is greatly restricted, with poor compatibility and relatively poor safety. Summary of the invention

[0003] The purpose of the present invention is to provide an offshore tank refueling system, which has a relatively simple structure, less restricted replenishment methods, and good compatibility. It can realize aircraft refueling or unloading, and can also realize the filling or tank refueling of aviation kerosene tanks on offshore platforms, and has high working safety.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] The present invention discloses an offshore tank refueling system, comprising a first hose, an aviation fuel pump, a filter separator, a flow meter, an automatic regulating valve and a second hose connected in sequence, wherein the first hose is used to be connected to a fuel supply tank, and the second hose is used to be connected to a fuel receiving tank. The offshore tank refueling system also includes an oil return tank, the filter separator has a first connecting port, a second connecting port, a third connecting port, a fourth connecting port and a fifth connecting port, the first connecting port is connected to the aviation fuel pump, the second connecting port is connected to the flow meter, the third connecting port is used to be connected to an oil unloading pipe and is used to release excess oil to an external device, the fourth connecting port is connected to a first oil port of the oil return tank through an exhaust valve, the fifth connecting port is connected to a first pipeline between the aviation fuel pump and the first hose, the second oil port of the oil return tank is connected to the first pipeline, and the connection position is located upstream of the connection position of the fifth connecting port and the first pipeline, and the oil return tank also has an oil unloading port for releasing excess oil.

[0006] In some embodiments, the offshore tank refueling system also includes a closed-circuit sampler, the inlet of which is connected to the filter separator and can be used to detect oil flowing into and / or out of the filter separator, and the outlet of which is connected to the oil return tank.

[0007] In some specific embodiments, the offshore tank refueling system also includes: a sampling main pipe, one end of which is connected to the inlet of the closed-circuit sampler; a plurality of sampling branch pipes, which are arranged in parallel, one end of each of the sampling branch pipes is connected to the sampling main pipe, and the other end is connected to the filter separator.

[0008] In some more specific embodiments, the sampling branch pipe includes a first sampling pipeline, a second sampling pipeline and a third sampling pipeline, wherein: one end of the first sampling pipeline is connected to the second pipeline between the first connecting port and the aviation fuel pump, and the other end is connected to the sampling main pipe, and a first sampling control valve is arranged on the first sampling pipeline; one end of the second sampling pipeline is connected to the third pipeline between the second connecting port and the flowmeter, and the other end is connected to the sampling main pipe, and a second sampling control valve is arranged on the second sampling pipeline; one end of the third sampling pipeline is connected to the oil unloading pipe, and the other end is connected to the closed-circuit sampler, and a third sampling control valve is arranged on the third sampling pipeline.

[0009] In some optional embodiments, the offshore tank refueling system also includes a test branch pipe, one end of which is connected to the second sampling pipeline, and the test branch pipe is cross-connected with the first sampling pipeline, a first differential pressure gauge is provided on the test branch pipe, first connecting branches are provided on both sides of the first differential pressure gauge, and each of the first connecting branches is provided with a first switch valve.

[0010] In some embodiments, the fourth pipeline between the fifth connecting port and the first pipeline is provided with a second switch valve, a safety valve, an electromagnetic control valve, a first one-way valve and a third switch valve in sequence, the pipeline between the first one-way valve and the second switch valve is connected with a second connecting branch pipe, and the second connecting branch pipe is provided with a second differential pressure gauge; the offshore tank refueling system also includes a fifth pipeline, one end of the fifth pipeline is connected to the fourth pipeline, and the other end is provided with a third differential pressure gauge, the middle part of the fifth pipeline is cross-connected with the middle of the fourth pipeline, and the connection position is located between the electromagnetic control valve and the first one-way valve, and the fifth pipeline is provided with a manual pressure relief valve and a second one-way valve located on both sides of the connection position.

[0011] In some embodiments, the offshore tank refueling system also includes a three-way control valve, the three-way control valve having a first valve port, a second valve port and a third valve port, the first valve port is connected to the first hose, the second valve port is connected to the aviation fuel pump, the third valve port is connected to the second oil port of the return tank, and a third one-way valve is provided between the third valve port and the second oil port.

[0012] In some embodiments, the fifth connecting port is connected to the first pipeline via a fourth pipeline, the offshore tank refueling system also includes a coarse filter ball valve assembly, the coarse filter ball valve assembly is installed between the aviation fuel pump and the first hose, and is located downstream of the connecting position between the fourth pipeline and the first pipeline, and the offshore tank refueling system also includes a self-priming tank installed upstream of the coarse filter ball valve assembly.

[0013] In some embodiments, the offshore tank refueling system also includes a support base, the support base includes a support frame and a support base, the support frame is installed on the support base, the support base is provided with a forklift handling hole, the support frame is provided with a rolling door, a protective net and mounting ears, the aviation fuel pump, the filter separator, the flow meter, the automatic regulating valve and the return oil tank are installed on the support base.

[0014] In some specific embodiments, the marine tank refueling system further includes a first hose reel and a second hose reel, wherein the first hose is wound around the first hose reel, and the second hose is wound around the second hose reel.

[0015] The beneficial effects of the offshore tank refueling system of the present invention are as follows: in the actual working process, the first hose and the second hose are connected to the fuel supply tank and the receiving tank respectively, and the working state of the aviation fuel pump is controlled according to actual needs, so as to realize the injection of aviation fuel in the fuel supply tank into the receiving tank (such as the fuel tank of a helicopter or the aviation fuel tank box on an offshore platform), or the extraction of aviation fuel in the receiving tank into the fuel supply tank. Since a flow meter and an automatic regulating valve are arranged on the oil circuit, the opening and closing of the automatic regulating valve and the synchronous start and stop of the aviation fuel pump are determined according to the feedback of the signal of the flow meter, so that the controllable pouring or filling of aviation fuel is realized. This feedback regulation realizes that the structural limitation of filling or pouring is reduced, and it can be compatible with the filling and pouring of various types of oil tanks, which is conducive to improving the compatibility of the offshore tank refueling system. The additional return oil tank is used to realize the pressure balance in the oil circuit, which can ensure the zero pressure storage condition inside the entire oil circuit, thereby improving the working safety of the offshore tank refueling system. In addition, the oil return tank and filter separator are respectively equipped with oil unloading pipes and oil unloading ports, which can release the excess oil to the outside of the device, further avoiding the phenomenon of excessive pressure in the oil circuit, thereby further improving the working safety of the offshore tank refueling system.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the internal oil circuit of the offshore tank refueling system according to an embodiment of the present invention.

[0018] Figure 2It is a structural schematic diagram of an offshore tank refueling system according to an embodiment of the present invention.

[0019] Figure 3 It is a structural schematic diagram of the dismantling support frame of the offshore tank refueling system according to an embodiment of the present invention.

[0020] Figure 4 yes Figure 3 A schematic diagram of the structure in another direction of the structure shown;

[0021] Reference numerals:

[0022] 1. First hose; 2. Aviation fuel pump; 3. Filter separator; 301. First connecting port; 302. Second connecting port; 303. Third connecting port; 304. Fourth connecting port; 305. Fifth connecting port; 4. Flow meter; 5. Automatic regulating valve; 6. Second hose; 7. Oil return tank; 701. First oil port; 702. Second oil port; 703. Oil unloading port; 8. Oil unloading pipe; 9. First pipeline; 10. Closed-circuit sampler; 11. Sampling main pipe; 12. First sampling pipeline; 13. First sampling control valve; 14. Second sampling pipeline; 15. Second sampling control valve; 16. Third sampling pipeline; 17. Third sampling control valve; 18. Second pipeline; 19. Third pipeline; 20. Test branch pipe; 21. First differential pressure gauge; 22. First connecting branch pipe; 23. First switch valve; 24. Fourth pipeline; 25. Second switch valve; 26, safety valve; 27, solenoid control valve; 28, first one-way valve; 29, third switch valve; 30, second connecting branch pipe; 31, second differential pressure gauge; 32, fifth pipeline; 33, third differential pressure gauge; 34, manual pressure relief valve; 35, second one-way valve; 36, three-way control valve; 361, first valve port; 362, second valve port; 363, third valve port; 37, third one-way valve; 38, coarse filter ball valve Component; 39, self-priming tank; 40, oil unloading valve group; 41, manual oil unloading valve; 42, exhaust valve; 43, fourth switch valve; 44, parallel branch; 45, fifth switch valve; 46, fourth one-way valve; 47, safety control valve; 48, support seat; 481, support frame; 482, support bottom plate; 4821, forklift handling hole; 49, installation ear; 50, first hose reel; 51, second hose reel. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0024] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the description of this embodiment, the terms "upper", "lower", "left", "right", "front", "rear" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0026] Reference below Figure 1-Figure 4 Describe the specific structure of the marine tank refueling system of the specific embodiment of the present invention

[0027] The present invention discloses a tank refueling system at sea, comprising a first hose 1, an aviation fuel pump 2, a filter separator 3, a flow meter 4, an automatic regulating valve 5, and a second hose 6 which are connected in sequence. The first hose 1 is used to be connected to a fuel supply tank, and the second hose 6 is used to be connected to a fuel receiving tank. The tank refueling system at sea also includes a return oil tank 7. The filter separator 3 has a first connecting port 301, a second connecting port 302, a third connecting port 303, a fourth connecting port 304, and a fifth connecting port 305. The first connecting port 301 is connected to the aviation fuel pump 2, and the second connecting port 303 is connected to the fourth connecting port 304. The first connecting port 302 is connected to the flow meter 4, the third connecting port 303 is used to connect to the oil unloading pipe 8 and to release the remaining oil to an external device, the fourth connecting port 304 is connected to the first oil port 701 of the return oil tank 7 through the exhaust valve 42, the fifth connecting port 305 is connected to the first pipeline 9 between the aviation fuel pump 2 and the first hose 1, the second oil port 702 of the return oil tank 7 is connected to the first pipeline 9, and the connection position is located upstream of the connection position of the fifth connecting port 305 and the first pipeline 9, and the return oil tank 7 also has an oil unloading port 703 for releasing the remaining oil. It can be understood that in the actual working process, the first hose 1 and the second hose 6 are connected to the fuel supply tank and the fuel receiving tank respectively, and the working state of the aviation fuel pump 2 is controlled according to actual needs, so as to realize the injection of aviation fuel in the fuel supply tank into the fuel receiving tank (such as the helicopter's fuel tank), or the extraction of aviation fuel in the fuel receiving tank into the fuel supply tank. Since the flow meter 4 and the automatic regulating valve 5 are provided on the oil circuit, the opening and closing of the automatic regulating valve 5 and the synchronous start and stop of the aviation fuel pump 2 are determined according to the feedback of the signal of the flow meter 4, so as to realize the controllable pouring or filling of aviation fuel. This feedback regulation realizes that the structural limitation of filling or pouring oil is reduced, and it is compatible with various types of oil tanks for filling and pouring oil, which is conducive to improving the compatibility of the offshore tank refueling system. The additional return oil tank 7 is used to achieve pressure balance in the oil circuit, which can ensure the zero pressure storage condition inside the entire oil circuit, thereby improving the working safety of the offshore tank refueling system. In addition, the return oil tank 7 and the filter separator 3 are respectively provided with an oil discharge port 703 and an oil discharge pipe 8, which can release the excess oil to the outside of the device, further avoiding the phenomenon of excessive pressure in the oil circuit, thereby further improving the working safety of the offshore tank refueling system.

[0028] Optionally, a manual oil unloading valve 41 is provided on the oil unloading pipe 8, and an oil unloading valve group 40 is provided at the oil unloading port 703, and the oil unloading valve group 40 includes a manual valve and an automatic valve connected in series. Thus, in the actual working process, the oil unloading of the offshore tank refueling system can be realized according to actual needs, thereby improving the working flexibility of the offshore tank refueling system.

[0029] Optionally, the fuel pump 2 can be a centrifugal pump suitable for aviation fuel and driven by a motor. The outlet pressure of the fuel pump 2 is 2 bar and the flow rate is 300 L / min. A spark-free coupling is used to connect the fuel pump 2 to the motor. A drainage tank is added to the front end of the fuel pump 2 inlet to enable the pump group to have a self-priming function.

[0030] Optional, reference Figure 1 As shown, the offshore tank refueling system further includes a closed-circuit sampler 10, the inlet of which is connected to the filter separator 3 and can be used to detect the oil flowing into and / or flowing out of the filter separator 3, and the outlet of the closed-circuit sampler 10 is connected to the oil return tank 7. It can be understood that the additional closed-circuit sampler 10 can test the aviation oil flowing into and / or flowing out of the filter separator 3 according to actual needs, thereby realizing real-time testing of the aviation oil condition and preventing aviation oil with too much impurities from entering the aircraft.

[0031] Further optional, refer to Figure 1 As shown, the offshore tank refueling system further includes a sampling main pipe 11 and a plurality of sampling branch pipes, one end of the sampling main pipe 11 is connected to the inlet of the closed-circuit sampler 10, and a plurality of sampling branch pipes are arranged in parallel, one end of each sampling branch pipe is connected to the sampling main pipe 11, and the other end is connected to the filter separator 3. It can be understood that, by providing a sampling main pipe 11 connected to the inlet of the closed-circuit sampler 10 and a plurality of sampling branch pipes respectively connected to the filter separator 3, while ensuring that the aviation fuel flowing into and / or out of the filter separator 3 can be tested, the pipeline structure of the entire offshore tank refueling system can be simplified, the assembly of the offshore tank refueling system can be facilitated, and the manufacturing cost of the offshore tank refueling system can be reduced.

[0032] For further optional reference, Figure 1 As shown, the sampling branch pipe includes a first sampling pipeline 12. One end of the first sampling pipeline 12 is connected to the second pipeline 18 between the first connecting port 301 and the aviation fuel pump 2, and the other end is connected to the sampling main pipe 11, and a first sampling control valve 13 is arranged on the first sampling pipeline 12. It can be understood that in the actual working process, after the aviation fuel enters the second pipeline 18 driven by the aviation fuel pump 2, when the first sampling control valve 13 is opened, the aviation fuel can enter the first sampling pipeline 12, pass through the sampling main pipe 11 and enter the closed-circuit sampler 10, thereby realizing the test of the aviation fuel flowing to the filter separator 3. In the embodiment of the present invention, there can be one first sampling control valve 13, and the first sampling control valve 13 can be a manual valve or an automatic valve, and there can also be two first sampling control valves 13, which are a manual valve and an automatic valve respectively.

[0033] For further optional reference, Figure 1As shown, the sampling branch pipe also includes a second sampling pipeline 14, one end of the second sampling pipeline 14 is connected to the third pipeline 19 between the second connecting port 302 and the flowmeter 4, and the other end is connected to the sampling main pipe 11, and a second sampling control valve 15 is provided on the second sampling pipeline 14; it can be understood that in the actual working process, the aviation fuel enters the filter separator 3 under the drive of the aviation fuel pump 2, and when the second sampling control valve 15 is opened, the aviation fuel can enter the second sampling pipeline 14 after leaving the filter separator 3, and enter the closed-circuit sampler 10 after passing through the sampling main pipe 11, thereby realizing the test of the aviation fuel flowing out of the filter separator 3. In the embodiment of the present invention, the second sampling control valve 15 can be one, and the second sampling control valve 15 can be a manual valve or an automatic valve, and the second sampling control valve 15 can also be two, and they are a manual valve and an automatic valve respectively.

[0034] For further optional reference, Figure 1 As shown, the sampling branch pipe also includes a third sampling pipeline 16. One end of the third sampling pipeline 16 is connected to the oil unloading pipe 8, and the other end is connected to the closed-circuit sampler 10, and a third sampling control valve 17 is provided on the third sampling pipeline 16. It can be understood that in the actual working process, the aviation fuel enters the filter separator 3 under the drive of the aviation fuel pump 2. When the third sampling control valve 17 is opened, the aviation fuel leaves the filter separator 3 and enters the oil unloading pipe 8, then enters the third sampling pipeline 16, and then enters the closed-circuit sampler 10 after passing through the sampling main pipe 11, thereby realizing the test of the aviation fuel flowing out of the filter separator 3. In the embodiment of the present invention, the third sampling control valve 17 can be one, and the third sampling control valve 17 can be a manual valve or an automatic valve. The third sampling control valve 17 can also be two, and they are a manual valve and an automatic valve respectively.

[0035] Further optionally, the offshore tank refueling system further includes a test branch pipe 20, one end of which is connected to the second sampling pipeline 14, and the test branch pipe 20 is cross-connected with the first sampling pipeline 12, and a first differential pressure gauge 21 is provided on the test branch pipe 20, and first connecting branches 22 are provided on both sides of the first differential pressure gauge 21, and each first connecting branch pipe 22 is provided with a first switch valve 23. It can be understood that, according to the above, the aviation fuel flowing into the filter separator 3 flows in the first sampling pipeline 12, and the aviation fuel flowing out of the filter separator 3 flows in the second sampling pipeline 14. The additional test branch pipe 20 and the first differential pressure gauge 21 can measure the pressure difference between the aviation fuel flowing into the filter separator 3 and the aviation fuel flowing out of the filter separator 3, so as to avoid the occurrence of excessive pressure difference. The additional first connecting branch pipe 22 and the first switch valve 23 can be used for pressure relief when the pressure difference is too large, so as to avoid the phenomenon of pipeline damage caused by excessive pressure difference. In this embodiment, the first switch valve 23 may be a manual valve or an automatic valve. When it is an automatic valve, it may be a pneumatic valve or an electric valve.

[0036] refer to Figure 1 As shown, the fourth pipeline 24 between the fifth connecting port 305 and the first pipeline 9 is provided with the second switch valve 25, the safety valve 26, the safety control valve 47, the electromagnetic control valve 27, the first check valve 28 and the third switch valve 29 in sequence, and the pipeline between the first check valve 28 and the second switch valve 25 is connected with the second connecting branch pipe 30, and the second connecting branch pipe 30 is provided with a second differential pressure gauge 31. It can be understood that in the actual working process, when the second switch valve 25, the electromagnetic control valve 27 and the third switch valve 29 are opened, the aviation fuel in the filter separator 3 can enter the fourth pipeline 24 through the fifth connecting port 305, and flow back to the first pipeline 9 through the second switch valve 25, the safety valve 26, the safety control valve 47, the electromagnetic control valve 27, the first check valve 28 and the third switch valve 29 in sequence. This flow path can realize that the aviation fuel filtered by the filter separator 3 re-enters the conveying circuit, realizes the secondary filtration of the aviation fuel, and is conducive to improving the cleanliness of the aviation fuel. At the same time, the residual pressure in the entire offshore tank refueling system can also be released into the oil return tank 7 to ensure zero-pressure storage conditions in the pipeline, thereby further improving the working safety of the offshore tank refueling system.

[0037] Optionally, the offshore tank refueling system further includes a fifth pipeline 32, one end of which is connected to the fourth pipeline 24, and the other end is provided with a third differential pressure gauge 33, the middle of the fifth pipeline 32 is cross-connected with the middle of the fourth pipeline 24, and the connection position is located between the electromagnetic control valve 27 and the first check valve 28, and the fifth pipeline 32 is provided with a manual pressure relief valve 34 and a second check valve 35 located on both sides of the connection position. It can be understood that in the actual working process, the aviation fuel passing through the fifth connecting port 305 can enter the fifth pipeline 32 after passing through the second switch valve 25, the safety valve 26 and the electromagnetic control valve 27, and flows to the third differential pressure gauge 33 after passing through the second check valve 35. The third differential pressure gauge 33 can detect the oil pressure in the fifth pipeline 32. When the oil pressure is too high, the pressure can be released by opening the manual pressure relief valve 34 to ensure the zero-pressure storage condition of the pipeline, thereby further improving the working safety of the offshore tank refueling system.

[0038] Optional, reference Figure 1As shown, the offshore tank refueling system also includes a three-way control valve 36, which has a first valve port 361, a second valve port 362 and a third valve port 363. The first valve port 361 is connected to the first hose 1, the second valve port 362 is connected to the aviation fuel pump 2, and the third valve port 363 is connected to the second oil port 702 of the return tank 7, and a third check valve 37 is provided between the third valve port 363 and the second oil port 702. It can be understood that the return tank 7 is provided with a high liquid level detector. When the return tank 7 has a high level alarm, the three-way control valve 36 in front of the inlet of the aviation fuel pump 2 is switched to the return tank 7 directly connected to the aviation fuel pump 2, and the aviation fuel is discharged through the aviation fuel pump 2. After the oil level is observed through the window and drained, the three-way control valve 36 is switched to the normal fuel supply state. In this way, the phenomenon of excessive aviation fuel in the return tank 7 is avoided, which is conducive to improving the working safety of the offshore tank refueling system.

[0039] Optional, reference Figure 1 As shown, a fourth switch valve 43 is provided between the exhaust valve 42 and the first oil port 701 of the oil return tank 7. In this way, in the actual working process, the exhaust valve 42 and the closed-circuit sampler 10 can be connected according to actual needs, thereby meeting actual test needs.

[0040] Optional, reference Figure 1 As shown, the offshore tank refueling system further includes a parallel branch 44, which is arranged in parallel with the automatic regulating valve 5, and a fifth switch valve 46 and a fourth check valve 45 are arranged on the parallel branch 44. It can be understood that when the automatic regulating valve 5 fails, the fifth switch valve 46 and the fourth check valve 45 can be opened to ensure that the oil circuit is unobstructed while the automatic regulating valve 5 is repaired, so that the offshore tank refueling system can be repaired without stopping, which is conducive to improving the repair efficiency and user practical satisfaction.

[0041] Optional, reference Figure 1 As shown, the fifth connecting port 305 is connected to the first pipeline 9 through the fourth pipeline 24, and the offshore tank refueling system also includes a coarse filter ball valve assembly 38, which is installed between the aviation fuel pump 2 and the first hose 1, and is located downstream of the connection position between the fourth pipeline 24 and the first pipeline 9. It can be understood that in the actual working process, after the aviation fuel is extracted from the fuel supply tank, it first passes through the coarse filter ball valve assembly 38, and then flows to the aviation fuel pump 2. The coarse filter ball valve assembly 38 can filter the aviation fuel, reduce the impurity content in the aviation fuel, and play a role in protecting the aviation fuel pump 2. It should be supplemented that, in this embodiment, the composition of the coarse filter ball valve assembly 38 can be selected according to actual conditions, and the specific structure of the coarse filter ball valve assembly 38 is not limited here.

[0042] Optional, reference Figure 1As shown, the offshore tank refueling system also includes a self-priming tank 39 installed upstream of the coarse filter ball valve assembly 38. When there is no oil in the system pipeline and the oil level of the fuel supply tank is too low and cannot be delivered to the aviation fuel pump 2, the self-priming tank 39 installed in front of the inlet valve of the aviation fuel pump 2 is filled with oil and then the aviation fuel pump 2 is opened to drain the aviation fuel in the fuel supply tank to the aviation fuel pump 2 to ensure that the aviation fuel pump 2 does not run idle, thereby ensuring the safety requirements of the system. It should be supplemented that the volume of the self-priming tank 39 can be selected according to actual needs. In this embodiment, the volume of the self-priming tank 39 is 25L. Of course, in other embodiments of the present invention, the volume of the self-priming tank 39 can be adjusted according to actual needs and is not limited to 25L. A defoaming device is provided in the self-priming tank 39, which can remove the foam generated by the self-priming tank 39 during the self-priming process.

[0043] In some embodiments, the offshore tank refueling system includes a support base 48, which includes a support frame 481 and a support base 482. The support frame 481 is installed on the support base 482, and a forklift handling hole 4821 is provided on the support base 482. The support frame 481 is provided with a rolling door, a protective net and a mounting lug 49. The aviation fuel pump 2, the filter separator 3, the flow meter 4, the automatic regulating valve 5 and the return oil tank 7 are installed on the support base 482. It can be understood that the support frame 481 has a rolling door on the front, a detachable protective net on the side, and a detachable protective plate on the top, which is not only used to protect the components in the device during transportation or lifting, but also convenient to disassemble during maintenance for easy maintenance. The support base 482 is equipped with a mounting lug 49, and the support base 482 is equipped with a forklift handling hole 4821, which can be moved by lifting, forklift and other tools to achieve mobile tank filling and refueling, and adapt to multiple emergency conditions.

[0044] refer to Figure 2-Figure 4 As shown, the offshore tank refueling system further includes a first hose reel 50 and a second hose reel 51, the first hose 1 is wound around the first hose reel 50, and the second hose reel 51 is wound around the second hose reel 51. It can be understood that the offshore tank refueling system is equipped with the first hose reel 50 and the second hose reel 51, and the internal joints can be quickly disconnected to prepare for the refueling gun or joint lead-out in different application scenarios, which greatly improves the convenience of the oil refueling device.

[0045] Optionally, considering the center of gravity position of the offshore tank refueling system, the first hose reel 50 and the second hose reel 51 are symmetrically arranged inside the support frame 481.

[0046] Optionally, the first hose reel 50 and the second hose reel 51 are made of SS316L and can be manually reeled. The nozzle of the fuel gun equipped with the first hose reel 50 and the second hose reel 51 is 1.5 inches in size and is equipped with a stainless steel filter, a dust cap, a static conductive clip and a plug.

[0047] The advantages of the marine tank refueling system according to the embodiment of the present invention are as follows:

[0048] First: safe and reliable: all electrical appliances are explosion-proof, the support seat 48 is equipped with a fire extinguishing device, an anti-static reel device, and a pull-off valve design, and the aviation fuel pump 2 has a self-priming function to avoid idling and ensure safety;

[0049] Second: convenient maintenance: the support frame 481 has a rolling door on the front, a detachable protective net on the side, and a detachable protective plate on the top, which is not only used to protect the components in the device during transportation or hoisting, but also easy to disassemble for maintenance.

[0050] Third: Lightweight and flexible: The entire refueling device weighs less than 2 tons and is equipped with mounting lugs 49 and forklift handling holes 4821. It can be moved by lifting, forklifts and other tools to achieve mobile tank filling and refueling, and adapt to multiple emergency conditions;

[0051] Fourth: Simple and efficient: The jet fuel can be injected into the jet fuel tank through the jet fuel pump 2, the filter separator 3, the flow meter 4, etc. In an emergency, it can be injected into the aircraft tank or other fuel receiving equipment through a gravity refueling gun, and it has functions such as quantitative and timed refueling, and the user satisfaction is high.

[0052] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A tank refueling system at sea, characterized in that: The system comprises a first hose (1), an aviation fuel pump (2), a filter separator (3), a flow meter (4), an automatic regulating valve (5) and a second hose (6) which are connected in sequence. The first hose (1) is used to be connected to a fuel supply tank, and the second hose (6) is used to be connected to a fuel receiving tank. The offshore tank refueling system also comprises a return oil tank (7). The filter separator (3) has a first connecting port (301), a second connecting port (302), a third connecting port (303), a fourth connecting port (304) and a fifth connecting port (305). The first connecting port (301) is connected to the aviation fuel pump (2), and the second connecting port (302) is connected to the flow meter (4). The third connecting port (303) is used to be connected to the oil discharge pipe (8) and to release the residual oil to an external device. The fourth connecting port (304) is connected to the first oil port (701) of the oil return tank (7) through the exhaust valve (42). The fifth connecting port (305) is connected to the first pipeline (9) between the aviation fuel pump (2) and the first hose (1). The second oil port (702) of the oil return tank (7) is connected to the first pipeline (9), and the connection position is located upstream of the connection position between the fifth connecting port (305) and the first pipeline (9). The oil return tank (7) also has an oil discharge port (703) for releasing the residual oil.

2. The offshore tank refueling system according to claim 1, characterized in that: The offshore tank refueling system further comprises a closed-circuit sampler (10), the inlet of which is connected to the filter separator (3) and can be used to detect the oil flowing into and / or flowing out of the filter separator (3), and the outlet of which is connected to the oil return tank (7).

3. The offshore tank refueling system according to claim 2, characterized in that: The offshore tank refueling system also includes: A sampling main pipe (11), one end of which is connected to the inlet of the closed-circuit sampler (10); A plurality of sampling branch pipes are arranged in parallel, one end of each sampling branch pipe is connected to the sampling main pipe (11), and the other end is connected to the filter separator (3).

4. The offshore tank refueling system according to claim 3, characterized in that: The sampling branch pipe comprises a first sampling pipeline (12), a second sampling pipeline (14) and a third sampling pipeline (16), wherein: One end of the first sampling pipeline (12) is connected to the second pipeline (18) between the first communication port (301) and the aviation fuel pump (2), and the other end is connected to the sampling main pipe (11), and a first sampling control valve (13) is provided on the first sampling pipeline (12); One end of the second sampling pipeline (14) is connected to the third pipeline (19) between the second communication port (302) and the flow meter (4), and the other end is connected to the sampling main pipe (11), and a second sampling control valve (15) is provided on the second sampling pipeline (14); One end of the third sampling pipeline (16) is connected to the oil unloading pipe (8), and the other end is connected to the closed-circuit sampler (10), and a third sampling control valve (17) is provided on the third sampling pipeline (16).

5. The offshore tank refueling system according to claim 4, characterized in that: The offshore tank refueling system further comprises a test branch pipe (20), one end of which is connected to the second sampling pipeline (14), and the test branch pipe (20) is cross-connected with the first sampling pipeline (12), a first differential pressure gauge (21) is provided on the test branch pipe (20), first connecting branch pipes (22) are provided on both sides of the first differential pressure gauge (21), and each of the first connecting branch pipes (22) is provided with a first switch valve (23).

6. The offshore tank refueling system according to claim 1, characterized in that: The fourth pipeline (24) between the fifth communication port (305) and the first pipeline (9) is provided with a second switch valve (25), a safety valve (26), an electromagnetic control valve (27), a first check valve (28) and a third switch valve (29) in sequence; a second connecting branch pipe (30) is connected to the pipeline between the first check valve (28) and the second switch valve (25); and a second differential pressure gauge (31) is provided on the second connecting branch pipe (30); The offshore tank refueling system further comprises a fifth pipeline (32), one end of the fifth pipeline (32) being connected to the fourth pipeline (24), and the other end being provided with a third differential pressure gauge (33); the middle portion of the fifth pipeline (32) being cross-connected with the middle of the fourth pipeline (24), and the connection position being located between the electromagnetic control valve (27) and the first one-way valve (28); and the fifth pipeline (32) being provided with a manual pressure relief valve (34) and a second one-way valve (35) located on both sides of the connection position.

7. The offshore tank refueling system according to claim 1, characterized in that: The offshore tank refueling system further comprises a three-way control valve (36), wherein the three-way control valve (36) comprises a first valve port (361), a second valve port (362) and a third valve port (363), wherein the first valve port (361) is connected to the first hose (1), the second valve port (362) is connected to the aviation fuel pump (2), the third valve port (363) is connected to the second oil port (702) of the oil return tank (7), and a third one-way valve (37) is provided between the third valve port (363) and the second oil port (702).

8. The offshore tank refueling system according to claim 1, characterized in that: The fifth connecting port (305) is connected to the first pipeline (9) via a fourth pipeline (24). The offshore tank refueling system further comprises a coarse filter ball valve assembly (38). The coarse filter ball valve assembly (38) is installed between the aviation fuel pump (2) and the first hose (1) and is located downstream of a connecting position between the fourth pipeline (24) and the first pipeline (9). The offshore tank refueling system further comprises a self-priming tank (39) installed upstream of the coarse filter ball valve assembly (38).

9. The offshore tank refueling system according to claim 1, characterized in that: The offshore tank refueling system also includes a support base (48), the support base (48) includes a support frame (481) and a support base plate (482), the support frame (481) is installed on the support base plate (482), the support base plate (482) is provided with a forklift handling hole (4821), the support frame (481) is provided with a rolling door, a protective net and a mounting lug (49), and the aviation fuel pump (2), the filter separator (3), the flow meter (4), the automatic regulating valve (5) and the return oil tank (7) are installed on the support base plate (482).

10. The marine tank refueling system according to claim 9, characterized in that: The marine tank refueling system further comprises a first hose reel (50) and a second hose reel (51), wherein the first hose (1) is wound around the first hose reel (50), and the second hose (6) is wound around the second hose reel (51).

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