Offshore platform helicopter refueling system

Abstract

The invention belongs to the technical field of offshore refueling, and discloses an offshore platform helicopter refueling system. An oil storage unit comprises a bearing support and a tank box assembly used for oil storage; the pump prying unit comprises a first outer box assembly and an oil pump assembly, an inlet of the oil pump assembly is communicated with the tank box assembly, and the first outer box assembly comprises a first prying outer frame with a first hanging ring and a first prying bottom frame with a first fork hole; the refueling pry unit comprises a second outer box assembly, a filter separator and a refueling gun, an outlet of the oil pump assembly is communicated with the refueling gun through the filter separator, and the second outer box assembly comprises a second pry outer frame with a second hanging ring and a second pry bottom frame with a second fork hole. The pump skid unit and the refueling skid unit are independently skid-mounted, are mutually independent units and can be assembled and transferred respectively, so that the integration level of the refueling system is improved, and the difficulty during transferring is reduced. The two prying units can be matched with two moving modes, the application range is wider, and on-site arrangement is more convenient.

Description

Technical Field

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

[0002] The number and scale of offshore drilling and oil production platforms are increasing. As offshore oil production platforms are far away from land, helicopters, as a fast means of transportation, provide great convenience for normal shuttle of offshore personnel and emergency rescue at sea. With the development of offshore production economy, helicopters are becoming the mainstream mode of marine transportation and are used more and more frequently. Helicopters play a bridging role between ships, platforms and the mainland, and helicopter refueling stations and maintenance sites are derived to provide services for them. Due to the characteristics of the marine environment and fuel, the offshore helicopter refueling system is very different from the conventional refueling system.

[0003] In the existing offshore platform helicopter refueling system, a refueling facility is set between the oil storage tank box and the offshore helicopter docking platform. The refueling facility includes pumps, filters, oil pipelines, refueling guns, various electronically controlled valves and other components. The pump is used to pump out the fuel in the oil storage tank box, and transport it to the filter through the oil pipeline. After being filtered by the filter, it finally reaches the refueling gun, which is used to refuel the helicopter. However, the refueling facilities between the existing oil storage tank box and the offshore helicopter docking platform have low integration, are difficult to transport and move, and are limited in use. At the same time, the internal oil circuit of the refueling facility has a single function, which is difficult to meet various needs during offshore refueling, such as sampling, testing, and activation of emergency spare parts.

[0004] Therefore, there is an urgent need for an offshore platform helicopter refueling system to solve the above-mentioned problems existing in the prior art. Summary of the invention

[0005] The purpose of the present invention is to provide an offshore platform helicopter refueling system, which can improve the integration of the refueling system, reduce the difficulty of transportation, have a wider range of applications, and make the internal oil circuit more functional and practical.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] Provided is an offshore platform helicopter refueling system, comprising:

[0008] The oil storage unit comprises a load-bearing bracket and a tank assembly for storing oil, wherein the tank assembly is mounted on the load-bearing bracket;

[0009] A pump skid unit, comprising a first outer box assembly and an oil pump assembly disposed in the first outer box assembly, wherein an inlet of the oil pump assembly is communicated with the tank box assembly, wherein the first outer box assembly comprises a first skid outer frame and a first skid bottom frame, wherein a first lifting ring is disposed on the top of the first skid outer frame, and the first skid bottom frame is connected to the bottom of the first skid outer frame and is provided with a first fork hole, wherein the first fork hole is configured to be used for inserting a fork plate of a forklift;

[0010] The refueling skid unit comprises a second outer box assembly and a filter separator and a refueling gun arranged in the second outer box assembly. The outlet of the oil pump assembly is connected to the refueling gun through the filter separator. The second outer box assembly comprises a second skid outer frame and a second skid bottom frame. A second lifting ring is arranged on the top of the second skid outer frame. The second skid bottom frame is connected to the bottom of the second skid outer frame and is provided with a second fork hole. The second fork hole is configured to be used for inserting a fork plate of a forklift.

[0011] As a preferred solution of the offshore platform helicopter refueling system provided by the present invention, the pump skid unit further includes a first input oil circuit and a first output oil circuit arranged in the first outer box assembly, and a first branch oil circuit and a second branch oil circuit connected in parallel with each other are arranged between the first input oil circuit and the first output oil circuit;

[0012] The oil pump assembly includes a first oil pump and a second oil pump. The first oil pump is arranged in the first branch oil path, and the second oil pump is arranged in the second branch oil path. Either the first oil pump or the second oil pump is started selectively.

[0013] As a preferred solution of the offshore platform helicopter refueling system provided by the present invention, a first filter is provided on the first oil branch line, and the first filter is located upstream of the first oil pump;

[0014] And / or, a second filter is provided on the second oil branch line, and the second filter is located upstream of the second oil pump;

[0015] And / or, a first ball valve is provided on the first oil branch line upstream of the first oil pump, and a second ball valve is provided downstream of the first oil pump, and a first check valve is provided between the first oil pump and the second ball valve;

[0016] And / or, a third ball valve is provided on the second oil branch line upstream of the second oil pump, and a fourth ball valve is provided downstream of the second oil pump, and a second check valve is provided between the second oil pump and the fourth ball valve;

[0017] And / or, a first sampling valve is provided on the first oil branch line downstream of the first oil pump;

[0018] And / or, a second sampling valve is provided on the second oil branch line downstream of the second oil pump.

[0019] As a preferred solution of the offshore platform helicopter refueling system provided by the present invention, a third oil branch is further provided between the first input oil circuit and the first output oil circuit, and the third oil branch is provided in parallel with the first oil branch and the second oil branch; a fifth ball valve, a first safety valve, and a sixth ball valve are provided in sequence from upstream to downstream on the third oil branch;

[0020] And / or, a first pressure gauge is provided on the first output oil circuit;

[0021] And / or, a seventh ball valve is connected to the outlet of the first output oil circuit, and the seventh ball valve is located outside the first outer box assembly.

[0022] As a preferred solution of the offshore platform helicopter refueling system provided by the present invention, the refueling skid unit includes a second input oil circuit, a second output oil circuit and a hose reel arranged in the second outer box assembly, and the filter separator is arranged between the second input oil circuit and the second output oil circuit;

[0023] The second input oil circuit is provided with a flow meter and a first valve;

[0024] And / or, an oil delivery pipe is wound around the hose reel, and the second output oil circuit is connected to the refueling gun through the oil delivery pipe;

[0025] And / or, a second pressure gauge is provided on the second output oil circuit;

[0026] And / or, the second output oil circuit is connected with a first drain valve;

[0027] And / or, an electrostatic grounding protection reel is provided in the second outer box assembly;

[0028] And / or, an eighth ball valve is connected to the inlet of the second input oil circuit, and the eighth ball valve can be communicated with the outlet of the oil pump assembly.

[0029] As a preferred solution of the offshore platform helicopter refueling system provided by the present invention, the refueling skid unit also includes a sampler, and a first sampling pipeline, a second sampling pipeline and a third sampling pipeline connected in parallel are arranged between the first valve and the sampler; the filter separator has a filter inlet, an intermediate outlet and a filter outlet, the second input oil circuit is connected to the filter inlet, the second output oil circuit is connected to the filter outlet, and the intermediate outlet is located between the filter inlet and the filter outlet;

[0030] The oil inlet end of the first sampling pipeline is connected between the first valve and the filter inlet, the oil outlet end of the first sampling pipeline is connected to the sampler, and a third sampling valve is provided on the first sampling pipeline;

[0031] The oil inlet end of the second sampling pipeline is connected to the middle outlet, the oil outlet end of the second sampling pipeline is connected to the sampler, and a fourth sampling valve is provided on the second sampling pipeline;

[0032] The oil inlet end of the third sampling pipeline is connected between the filter outlet and the second output oil circuit, the oil outlet end of the third sampling pipeline is connected to the sampler, and a fifth sampling valve is arranged on the third sampling pipeline.

[0033] As a preferred solution of the offshore platform helicopter refueling system provided by the present invention, the refueling skid unit also includes a recovery oil tank;

[0034] A first oil recovery circuit is connected between the intermediate outlet and the oil recovery tank, and a second valve and an automatic exhaust valve are provided on the first oil recovery circuit;

[0035] A second oil recovery circuit is provided between the sampler and the oil recovery tank, and a third valve is provided on the second oil recovery circuit.

[0036] As a preferred solution of the offshore platform helicopter refueling system provided by the present invention, the refueling skid unit further includes a pressure relief pipeline, a first end of the pressure relief pipeline is connected to the filter separator, and a second end of the pressure relief pipeline is connected to the second oil recovery circuit and is located downstream of the third valve;

[0037] The pressure relief pipeline is provided with a second safety valve and a fourth valve, wherein the second safety valve is located downstream of the fourth valve.

[0038] As a preferred solution of the offshore platform helicopter refueling system provided by the present invention, the refueling skid unit also includes a differential pressure gauge arranged in the second outer box assembly, the differential pressure gauge is arranged in parallel with the filter separator, a fifth valve is arranged between the differential pressure gauge and the upstream of the filter separator, and a seventh valve is arranged between the differential pressure gauge and the downstream of the filter separator.

[0039] As a preferred solution of the offshore platform helicopter refueling system provided by the present invention, the load-bearing bracket includes:

[0040] A fixed bracket, wherein the fixed bracket is provided with a first sliding surface,

[0041] A sliding bracket is arranged above the fixed bracket, and a second sliding surface and a hook portion are arranged on the sliding bracket, and the second sliding surface can slide with the first sliding surface; the tank assembly is installed on the sliding bracket;

[0042] The release mechanism comprises a telescopic drive mechanism and a rocker arm lock hook, wherein the telescopic drive mechanism comprises a mounting shell and a telescopic rod, wherein the mounting shell is hinged to the fixed bracket, the telescopic rod is telescopically arranged on the mounting shell and is hinged to the first end of the rocker arm lock hook, the second end of the rocker arm lock hook is provided with a hooking groove, the rocker arm lock hook is rotatably connected to the fixed bracket around a swing center, and the swing center is located between the first end and the second end of the rocker arm lock hook, and the hooking groove is detachably engaged with the hooking portion;

[0043] The rocker arm lock hook can be swung and switched between a hook position and a release position under the drive of the telescopic drive mechanism, wherein the hook position is a position where the rocker arm lock hook is engaged with the hook portion through the hook slot, and the release position is a position where the rocker arm lock hook is unhooked from the hook portion through the hook slot; when in the release position, the sliding bracket can slide down along the fixed bracket under the action of its own gravity;

[0044] and / or,

[0045] A locking piece is rotatably provided on the supporting bracket, and the locking piece has an unlocking position and a locking position. A strip hole is provided on the tank box assembly, and the locking piece in the unlocking position can pass through the strip hole and rotate to the locking position to hook the strip hole.

[0046] Beneficial effects of the present invention:

[0047] The present invention provides an offshore platform helicopter refueling system, wherein a support bracket is used to support a tank box assembly, an inlet of an oil pump assembly of a pump skid unit is connected to the tank box assembly, and an outlet is connected to a refueling gun through a filter separator of a refueling skid unit. The oil pump assembly can pump the fuel in the tank box assembly to the refueling skid unit, and after the fuel is filtered by the filter separator, it is filled into the helicopter fuel tank of the offshore platform through a refueling gun. The pump skid unit and the refueling skid unit are separately formed into skids, and the two are independent units, which can be assembled and transported separately, thereby improving the integration of the refueling system and reducing the difficulty during transportation. The pump skid unit and the refueling skid unit can be hoisted and transported respectively through the first lifting ring and the second lifting ring, and the pump skid unit and the refueling skid unit can be transported by a forklift through the first fork hole and the second fork hole, so that both skid units can adapt to two moving modes, have a wider range of application, and are more convenient when arranged on site. Moreover, the offshore platform helicopter refueling system provided by the present invention has richer internal oil circuit functions and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0049] Figure 1 It is a schematic diagram of the connection of various units of the offshore platform helicopter refueling system provided by a specific embodiment of the present invention;

[0050] Figure 2 It is a structural schematic diagram of a pump skid unit provided in a specific embodiment of the present invention;

[0051] Figure 3 is a schematic diagram of a first outer box assembly of a pump skid unit provided in a specific embodiment of the present invention;

[0052] Figure 4 is an internal schematic diagram of a pump skid unit provided in a specific embodiment of the present invention;

[0053] Figure 5 is a first structural schematic diagram of a refueling skid unit provided in a specific embodiment of the present invention;

[0054] Figure 6 is a second structural schematic diagram of a refueling skid unit provided in a specific embodiment of the present invention;

[0055] Figure 7 is a schematic diagram of a second outer box assembly of a refueling skid unit provided in a specific embodiment of the present invention;

[0056] Figure 8 is an internal schematic diagram of a refueling skid unit provided in a specific embodiment of the present invention;

[0057] Fig. 9 It is a structural schematic diagram of an electrostatic grounding protection reel provided in a specific embodiment of the present invention;

[0058] Fig.10 is a first exploded view of a grounding clamp provided in a specific embodiment of the present invention;

[0059] Fig.11 is a second exploded view of a grounding clamp provided in a specific embodiment of the present invention;

[0060] Fig.12 It is a schematic diagram of the oil circuit connection between the pump skid unit and the refueling skid unit provided in a specific embodiment of the present invention;

[0061] Fig.13 It is a schematic diagram of the oil circuit of the pump skid unit provided in a specific embodiment of the present invention;

[0062] Fig.14 It is a schematic diagram of the oil circuit of the refueling skid unit provided in a specific embodiment of the present invention;

[0063] Fig.15 is an axonometric view of a support bracket of an oil storage unit provided in a specific embodiment of the invention;

[0064] Fig.16 is a first side view of a support bracket of an oil storage unit provided in a specific embodiment of the invention;

[0065] Fig.17 is a second side view of the support bracket of the oil storage unit provided in the specific embodiment of the invention;

[0066] Fig.18 yes Fig.15 A partial enlarged view of point A in the middle.

[0067] In the figure:

[0068] 1. Oil storage unit; 2. Pump skid unit; 3. Fueling skid unit;

[0069] 11. Load-bearing bracket; 12. Locking member;

[0070] 111. fixed bracket; 112. sliding bracket; 113. release mechanism;

[0071] 1111, first sliding surface; 1121, second sliding surface; 1122, hook portion;

[0072] 1131. telescopic driving mechanism; 1132. rocker arm lock hook;

[0073] 11311, mounting housing; 11312, telescopic rod; 11321, hook slot;

[0074] 121. locking portion; 122. rotating portion;

[0075] 21. First outer box assembly; 22. Oil pump assembly; 23. First input oil circuit; 24. First output oil circuit; 25. First branch oil circuit; 26. Second branch oil circuit; 27. Third branch oil circuit; 28. Seventh ball valve; 29. ​​First warning light; 210. First explosion-proof electric control cabinet;

[0076] 211, first skid outer frame; 212, first skid bottom frame; 213, first outer box board;

[0077] 2111, first lifting ring; 2121, first fork hole;

[0078] 221, a first oil pump; 222, a second oil pump;

[0079] 241, first pressure gauge;

[0080] 251, first filter; 252, first ball valve; 253, second ball valve; 254, first check valve; 255, first sampling valve;

[0081] 261, second filter; 262, third ball valve; 263, fourth ball valve; 264, second check valve; 265, second sampling valve;

[0082] 271, fifth ball valve; 272, first safety valve; 273, sixth ball valve;

[0083] 31. Second outer box assembly; 32. Filter separator; 33. Fueling gun; 34. Second input oil circuit; 35. Second output oil circuit; 36. Hose reel; 37. Electrostatic grounding protection reel; 38. Eighth ball valve; 39. Sampler; 310. First sampling pipeline; 320. Second sampling pipeline; 330. Third sampling pipeline; 340. Recovery oil tank; 350. First recovery oil circuit; 360. Second recovery oil circuit; 370. Pressure discharge pipeline; 380. Pressure difference measurement pipeline; 390. Second alarm light; 3100. Second explosion-proof electric control cabinet;

[0084] 371, mounting bracket; 372, rotating reel; 373, grounding wire; 374, grounding clamp; 375, conductor rack;

[0085] 3741, first clamping body; 3742, second clamping body; 3743, rotating shaft; 3744, paint breaking needle; 3745, thread pressing part;

[0086] 311, second skid outer frame; 312, second skid bottom frame; 313, second outer box board;

[0087] 3111, second lifting ring; 3121, second fork hole;

[0088] 341. flow meter; 342. first valve;

[0089] 321, filter inlet; 322, middle outlet; 323, filter outlet;

[0090] 351, second pressure gauge; 352, first drain valve;

[0091] 361. Oil pipeline;

[0092] 3101, third sampling valve; 3102, fifth valve;

[0093] 3201, fourth sampling valve; 3202, sixth valve; 3203, second sewage valve;

[0094] 3301, fifth sampling valve; 3302, seventh valve;

[0095] 3401, the third drain valve;

[0096] 3501, second valve; 3502, automatic exhaust valve;

[0097] 3601, the third valve;

[0098] 3701, second safety valve; 3702, fourth valve;

[0099] 3801, differential pressure gauge;

[0100] O, swing center;

[0101] 100. Helicopter. DETAILED DESCRIPTION

[0102] 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.

[0103] 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.

[0104] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0105] In the description of this embodiment, the terms "upper", "lower", "left", "right" 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.

[0106] In this embodiment, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects before and after are in an "or" relationship.

[0107] In the embodiments of the present invention, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments.

[0108] like Figure 1 As shown, this embodiment provides an offshore platform helicopter refueling system, which can improve the integration of the refueling system, reduce the difficulty of transportation, have a wider range of applications, and make the internal oil circuit function more abundant and practical. The offshore platform helicopter refueling system includes an oil storage unit 1, a pump skid unit 2 and a refueling skid unit 3. The oil storage unit 1 is connected to the refueling skid unit 3 through the pump skid unit 2. The refueling skid unit 3 is used to refuel the helicopter 100 of the offshore platform.

[0109] Specifically, see Figure 2 , Figure 5 , Figure 6 as well as Fig.15 The oil storage unit 1 includes a support bracket 11 and a tank assembly for storing oil (not shown). The tank assembly is mounted on the support bracket 11. Furthermore, the tank assembly can be detachably mounted on the support bracket 11, so that the tank assembly can be easily replaced. The pump skid unit 2 includes a first outer box assembly 21 and an oil pump assembly 22 disposed in the first outer box assembly 21. The inlet of the oil pump assembly 22 is connected to the tank assembly. Figure 3 The first outer box assembly 21 includes a first skid outer frame 211 and a first skid bottom frame 212. The top of the first skid outer frame 211 is provided with a first lifting ring 2111. The first skid bottom frame 212 is connected to the bottom of the first skid outer frame 211 and is provided with a first fork hole 2121. The first fork hole 2121 is configured to be used for inserting a fork plate of a forklift. The refueling skid unit 3 includes a second outer box assembly 31 and a filter separator 32 and a refueling gun 33 arranged in the second outer box assembly 31. The outlet of the oil pump assembly 22 is connected to the refueling gun 33 through the filter separator 32. Figure 7The second outer box assembly 31 includes a second pry outer frame 311 and a second pry bottom frame 312. A second lifting ring 3111 is provided on the top of the second pry outer frame 311. The second pry bottom frame 312 is connected to the bottom of the second pry outer frame 311 and is provided with a second fork hole 3121. The second fork hole 3121 is configured to be used for inserting a fork plate of a forklift.

[0110] In the offshore platform helicopter refueling system provided by the embodiment of the present application, the support bracket 11 is used to support the tank box assembly, the inlet of the oil pump assembly 22 of the pump skid unit 2 is connected to the tank box assembly, and the outlet is connected to the refueling gun 33 through the filter separator 32 of the refueling skid unit 3. The fuel in the tank box assembly can be pumped to the refueling skid unit 3 through the oil pump assembly 22. After the fuel is filtered by the filter separator 32, it is filled into the helicopter 100 fuel tank of the offshore platform through the refueling gun 33. The pump skid unit 2 and the refueling skid unit 3 are separately skids, and the two are independent units. They can be assembled and transported separately, which improves the integration of the refueling system and reduces the difficulty of transportation. The pump skid unit 2 and the refueling skid unit 3 can be hoisted and transported respectively through the first lifting ring 2111 and the second lifting ring 3111, and the pump skid unit 2 and the refueling skid unit 3 can be transported by a forklift through the first fork hole 2121 and the second fork hole 3121, so that both skid units can adapt to two moving modes, with a wider range of application and more convenient on-site arrangement.

[0111] Moreover, the offshore platform helicopter refueling system provided in the embodiment of the present application has richer internal oil circuit functions and is highly practical.

[0112] More specifically, see Figure 2 The first outer box assembly 21 also includes a first outer box plate 213. The top, bottom, left side, right side and rear side of the first skid outer frame 211 are all provided with first outer box plates 213. The first outer box plate 213 and the first skid outer frame 211 are fixedly connected to each other to form an internal chamber of the pump skid unit 2 with a door. A first rolling door is installed at the door of the pump skid unit 2.

[0113] See also Figure 5 and Figure 6 The second outer box assembly 31 also includes a second outer box plate 313. The top, bottom, left side, right side and rear side of the second skid outer frame 311 are all provided with second outer box plates 313. The second outer box plate 313 and the second skid outer frame 311 are fixedly connected to each other to form an internal chamber of the refueling skid unit 3 with a door. A second rolling door is installed at the door of the refueling skid unit 3.

[0114] like Figure 4 , Fig.12 as well as Fig.13As shown, the pump skid unit 2 further includes a first input oil circuit 23 and a first output oil circuit 24 provided in the first outer box assembly 21. The inlet end of the first input oil circuit 23 is used to connect with the tank assembly so that the fuel in the tank assembly enters the pump skid unit 2, and the outlet end of the first output oil circuit 24 is connected with the refueling skid unit 3 so as to pump the fuel into the refueling skid unit 3.

[0115] See also Fig.13 , a first oil branch 25 and a second oil branch 26 are provided in parallel between the first input oil circuit 23 and the first output oil circuit 24. The oil pump assembly 22 includes a first oil pump 221 and a second oil pump 222, wherein the first oil pump 221 is provided in the first oil branch 25, and the second oil pump 222 is provided in the second oil branch 26; the first oil pump 221 and the second oil pump 222 are selectively started. By providing the first oil branch 25 and the second oil branch 26 in parallel, and respectively providing the first oil pump 221 and the second oil pump 222 on the two oil branch circuits, the first oil pump 221 and the second oil pump 222 can be used as backup for each other, that is, when one of them is turned on, the other is turned off. If one of them fails in operation, the other oil pump can be activated in time to ensure that the helicopter 100 can be stably and continuously refueled, and avoid the phenomenon that the refueling cannot be smoothly performed due to the failure of the oil pump.

[0116] Exemplarily, when the first oil pump 221 is turned on, the fuel enters the refueling skid unit 3 through the first input oil passage 23 , the first branch oil passage 25 and the first output oil passage 24 .

[0117] Exemplarily, the first oil pump 221 and the second oil pump 222 are both horizontal centrifugal pumps, configured with an electric motor and a space heater, and installed on the inner bottom wall of the first outer box assembly 21 .

[0118] Continue reading Fig.13 , a first filter 251 is provided on the first oil branch 25, and the first filter 251 is located upstream of the first oil pump 221; and / or, a second filter 261 is provided on the second oil branch 26, and the second filter 261 is located upstream of the second oil pump 222. That is, before the fuel enters the first oil pump 221, the fuel is filtered by the first filter 251 to prevent impurities from clogging the first oil pump 221, causing the first oil pump 221 to operate poorly; before the fuel enters the second oil pump 222, the fuel is filtered by the second filter 261 to prevent impurities from clogging the second oil pump 222, causing the second oil pump 222 to operate poorly.

[0119] Exemplarily, the first filter 251 and the second filter 261 are both Y-type filters.

[0120] Continue reading Fig.13, a first ball valve 252 is provided on the first branch oil path 25 upstream of the first oil pump 221, and a second ball valve 253 is provided downstream of the first oil pump 221, and a first check valve 254 is provided between the first oil pump 221 and the second ball valve 253. The first ball valve 252 and the second ball valve 253 are used to control the on-off of the first branch oil path 25, and the first check valve 254 is used to prevent the fuel from flowing back. Exemplarily, the first ball valve 252 and the second ball valve 253 are both manual valves or electric valves.

[0121] A third ball valve 262 is provided on the second oil branch circuit 26 upstream of the second oil pump 222, and a fourth ball valve 263 is provided downstream of the second oil pump 222, and a second check valve 264 is provided between the second oil pump 222 and the fourth ball valve 263. The third ball valve 262 and the fourth ball valve 263 are used to control the on-off of the second oil branch circuit 26, and the second check valve 264 is used to prevent the fuel from flowing back. Exemplarily, the third ball valve 262 and the fourth ball valve 263 are both manual valves or electric valves.

[0122] Continue reading Fig.13 A first sampling valve 255 is provided on the first branch oil path 25 downstream of the first oil pump 221; and / or a second sampling valve 265 is provided on the second branch oil path 26 downstream of the second oil pump 222. The fuel on the first branch oil path 25 can be sampled through the first sampling valve 255, and the fuel on the second branch oil path 26 can be sampled through the second sampling valve 265, so as to facilitate the sampling and testing of the fuel.

[0123] Continue reading Fig.13 A third branch oil circuit 27 is also provided between the first input oil circuit 23 and the first output oil circuit 24. The third branch oil circuit 27 is provided in parallel with the first branch oil circuit 25 and the second branch oil circuit 26. A fifth ball valve 271, a first safety valve 272, and a sixth ball valve 273 are provided on the third branch oil circuit 27 from upstream to downstream. The fifth ball valve 271 and the sixth ball valve 273 are used to control the on-off of the third branch oil circuit 27, and the first safety valve 272 is used to discharge pressure and release pressure to ensure the safety of the oil circuit of the entire pump skid unit 2.

[0124] Specifically, the oil pump (the first oil pump 221 and the second oil pump 222) is provided with a relief valve. When the outlet pressure of the oil pump increases to the set pressure of the relief valve, the excess flow provided by the oil pump can flow back to the inlet of the oil pump through the relief valve of the oil pump, stabilizing the pipeline pressure downstream of the oil pump at the set value. Further, when the pressure downstream of the oil pump continues to increase to the set pressure of the first safety valve 272, the first safety valve 272 provided on the third branch oil circuit 27 opens to release pressure, thereby protecting the oil pump and the pipeline system.

[0125] See also Fig.13A first pressure gauge 241 is provided on the first output oil circuit 24 for detecting the oil pressure on the first output oil circuit 24 .

[0126] See also Fig.13 The outlet of the first output oil circuit 24 is connected to a seventh ball valve 28 , which is located outside the first outer box assembly 21 and is used to control the on-off of the connecting pipeline between the pump skid unit 2 and the refueling skid unit 3 .

[0127] Exemplarily, the fifth ball valve 271 , the sixth ball valve 273 and the seventh ball valve 28 may be manually controlled valves or electrically controlled valves.

[0128] Further, see Figure 2 The pump skid unit 2 further includes a first alarm light 29 and a first explosion-proof electric control cabinet 210. The first alarm light 29 is installed on the top of the first outer box assembly 21. The first explosion-proof electric control cabinet 210 is arranged inside the first outer box assembly 21 to prevent dust and moisture. The first explosion-proof electric control cabinet 210 is connected in communication with each electric control component in the pump skid unit 2 to control the electric control components. The first alarm light 29 is connected in communication with the first explosion-proof electric control cabinet 210 to sound an alarm and promptly remind the operator when the pump skid unit 2 operates abnormally.

[0129] like Figure 8 , Fig.12 as well as Fig.14 As shown, the refueling skid unit 3 includes a second input oil circuit 34, a second output oil circuit 35 and a hose reel 36 arranged in the second outer box assembly 31, and the filter separator 32 is arranged between the second input oil circuit 34 and the second output oil circuit 35. A flow meter 341 and a first valve 342 are arranged on the second input oil circuit 34; and an oil delivery pipe 361 is wound around the hose reel 36. The second input oil circuit 34 is used to connect with the first output oil circuit 24 of the pump skid unit 2 through a connecting pipeline, and the second output oil circuit 35 is connected with the refueling gun 33 through an oil delivery pipe 361. The fuel in the second input oil circuit 34 is filtered by the filter separator 32 and then transported to the oil delivery pipe 361 through the second output oil circuit 35, and finally filled into the fuel tank of the helicopter 100 through the refueling gun 33. The first valve 342 is used to control the on-off of the second input oil circuit 34. For example, the first valve 342 is preferably an electric control valve.

[0130] Exemplarily, the refueling gun 33 is a gravity refueling gun.

[0131] The inlet of the second input oil circuit 34 is connected to an eighth ball valve 38, which is specifically connected to the seventh ball valve 28 outside the pump skid unit 2 through a connecting pipeline. The eighth ball valve 38 may be a manual valve or an electric valve.

[0132] The flow meter 341 of the refueling skid unit 3 is arranged at the front end of the filter separator 32. Through the signal fed back by the flow meter 341, the system can control the opening of the valve (such as the eighth ball valve 38) at the front end of the flow meter 341 to ensure that the system output flow is stable at the set value.

[0133] Exemplarily, the flow meter 341 is an elliptical tooth flow meter.

[0134] See also Fig.14 The second output oil circuit 35 is provided with a second pressure gauge 351, and the second pressure gauge 351 is used to monitor the oil pressure on the second output oil circuit 35. A first drain pipeline is branched between the second pressure gauge 351 and the hose reel 36 on the second output oil circuit 35, and a first drain valve 352 is provided at the end of the first drain pipeline for controlling the on-off of the first drain pipeline.

[0135] See also Figure 5 , Figure 6 as well as Figure 8 An electrostatic grounding protection reel 37 is provided in the second outer box assembly 31 for electrostatic grounding operation to ensure the safety of the refueling skid unit 3.

[0136] Specifically, Fig. 9 As shown, the electrostatic grounding protection reel 37 includes a mounting bracket 371 , a rotating reel 372 , a grounding wire 373 , a grounding clamp 374 and a wire rack 375 .

[0137] Among them, the mounting bracket 371 is fixedly mounted on the bottom wall of the second outer box assembly 31, the rotating reel 372 is rotatably mounted on the mounting bracket 371, the grounding wire 373 is wound on the rotating reel 372, and the first end of the grounding wire 373 is electrically connected to the metal conductive part of the refueling skid unit 3, and the other end is electrically connected to the grounding clamp 374. When in use, the grounding clamp 374 is clamped to the static conductive pile of the aircraft to achieve static grounding. One end of the wire rack 375 is connected to the mounting bracket 371, and the other end is provided with a guide ring, which is used to pass the grounding wire 373 and play a guiding role when the grounding wire 373 is led out.

[0138] The grounding wire 373 provided in this embodiment is a Kevlar-reinforced special grounding wire, and its outer sheath is made of a polymer polyurethane material (TPEE), which not only has the characteristics of high strength and good environmental adaptability, but also has high elasticity and flexibility. The internal conductor of the grounding wire 373 includes a plurality of wire cores composed of aramid (commonly known as "Kevlar") wrapped around multiple copper core wires, which not only has excellent conductive properties, but also has excellent mechanical properties.

[0139] Compared with conventional copper core plastic-coated grounding wires, the Kevlar-reinforced special grounding wire provided in the embodiments of the present application has the following advantages:

[0140] (1) Strong weather resistance. Under the extremely low temperature (-40℃) and extremely high temperature (+80℃) conditions of civil airports, the outer sheath of the grounding wire 373 does not become brittle or deformed, and can maintain good flexibility and elasticity.

[0141] (2) Good mechanical properties. Whether it is the outer sheath made of polyurethane material or the Kevlar reinforced wire core, it is not easy to break even after repeated stretching and bending for a long time.

[0142] (3) Excellent chemical properties. This special grounding wire is not only resistant to oil and salt spray, but also not prone to aging and cracking when exposed to sunlight for a long time.

[0143] (4) Long service life, 2 to 3 times longer than conventional copper core plastic-coated grounding wire.

[0144] like Fig.10 and Fig.11 As shown, the grounding clamp 374 provided in this embodiment includes a first clamp body 3741, a second clamp body 3742, a rotating shaft 3743 and a wire pressing portion 3745. The first clamp body 3741 and the second clamp body 3742 are rotatably connected through the rotating shaft 3743, and a high elastic torsion spring is arranged on the rotating shaft 3743, and two torsion arms of the torsion spring are respectively abutted against the first clamp body 3741 and the second clamp body 3742, so that the first clamp body 3741 and the second clamp body 3742 are clamped on the static conductive pile under the elastic force of the torsion spring.

[0145] The first end of the first clamp 3741 and the first end of the second clamp 3742 are used to clamp the static conductive pile, and the second end of the first clamp 3741 and the second end of the second clamp 3742 are used to receive external force, so as to be relatively close to each other under the action of external force, so that the first ends of the two are opened. The above-mentioned wire pressing part 3745 is arranged at the second end of the first clamp 3741, and the wire pressing part 3745 can be connected to the first clamp 3741 by screws, and a clamping groove for clamping the grounding wire 373 is arranged on the side facing the first clamp 3741, so as to realize the stable connection between the grounding wire 373 and the grounding clamp 374.

[0146] Furthermore, the first end of the first clamp 3741 and the first end of the second clamp 3742 are both provided with a paint-breaking needle 3744. The paint-breaking needle 3744 is protruded relative to the inner side of the first clamp 3741 and the inner side of the second clamp 3742, and has a pointed structure. When in use, the first clamp 3741 and the second clamp 3742 are held by hand to drive the grounding clamp 374 to open and align it with the static-conducting pile. After releasing the hand, the paint-breaking needle 3744 penetrates rust or debris under the action of the high-elastic torsion spring and is firmly clamped on the static-conducting pile, so that the grounding operation is stable and reliable.

[0147] Specifically, the paint-breaking needle 3744 is made of hard alloy. The paint-breaking needle 3744 on the first clamp 3741 is conductively connected to the ground wire 373. Optionally, the first clamp 3741 and the second clamp 3742 are both stamped and formed of 304 or 316 stainless steel.

[0148] Compared with the traditional iron grounding clamp, the grounding clamp 374 provided in the embodiment of the present application has the following advantages:

[0149] (1) Not easy to rust, wear and deformation after long-term use;

[0150] (2) Good paint breaking effect, firm and reliable clamping, and good static electricity conduction effect;

[0151] (3) Long service life: the grounding clamp 374 does not need to be replaced during refueling.

[0152] See also Figure 8 and Fig.14 The refueling skid unit 3 also includes a sampler 39. A first sampling pipeline 310, a second sampling pipeline 320 and a third sampling pipeline 330 are arranged in parallel between the first valve 342 and the sampler 39. The filter separator 32 has a filter inlet 321, an intermediate outlet 322 and a filter outlet 323. The second input oil circuit 34 is connected to the filter inlet 321, the second output oil circuit 35 is connected to the filter outlet 323, and the intermediate outlet 322 is located between the filter inlet 321 and the filter outlet 323. Then, the fuel enters through the filter inlet 321, is filtered by the filter element in the filter separator 32, and is output through the filter outlet 323. The filtered fuel can be output through the intermediate outlet 322.

[0153] The oil inlet of the first sampling pipeline 310 is connected between the first valve 342 and the filter inlet 321, the oil outlet of the first sampling pipeline 310 is connected to the sampler 39, and the first sampling pipeline 310 is provided with a third sampling valve 3101. The oil inlet of the second sampling pipeline 320 is connected to the middle outlet 322, the oil outlet of the second sampling pipeline 320 is connected to the sampler 39, and the second sampling pipeline 320 is provided with a fourth sampling valve 3201. The oil inlet of the third sampling pipeline 330 is connected between the filter outlet 323 and the second output oil circuit 35, the oil outlet of the third sampling pipeline 330 is connected to the sampler 39, and the third sampling pipeline 330 is provided with a fifth sampling valve 3301.

[0154] The first sampling pipeline 310 is also provided with a fifth valve 3102, which is located upstream of the third sampling valve 3101. When the fifth valve 3102 and the third sampling valve 3101 are opened, the fuel before filtration can be sampled through the sampler 39 and the first sampling pipeline 310, which is convenient for detecting the fuel before filtration.

[0155] The second sampling pipeline 320 is also provided with a sixth valve 3202, which is located upstream of the fourth sampling valve 3201. When the sixth valve 3202 and the fourth sampling valve 3201 are opened, the fuel being filtered can be sampled through the sampler 39 and the second sampling pipeline 320, which is convenient for detecting the fuel being filtered. Furthermore, the second sampling pipeline 320 branches out a second sewage pipeline between the sixth valve 3202 and the fourth sampling valve 3201, and a second sewage valve 3203 is provided at the end of the second sewage pipeline.

[0156] The third sampling pipeline 330 is also provided with a seventh valve 3302, which is located upstream of the fifth sampling valve 3301. When the seventh valve 3302 and the fifth sampling valve 3301 are both opened, the filtered fuel can be sampled through the sampler 39 and the third sampling pipeline 330, which is convenient for detecting the filtered fuel.

[0157] See also Figure 8 and Fig.14 The refueling skid unit 3 also includes a recovery oil tank 340. A first recovery oil circuit 350 is connected between the middle outlet 322 of the filter separator 32 and the recovery oil tank 340, and the filtered waste oil is transported to the recovery oil tank 340 through the first recovery oil circuit 350. Further, a second valve 3501 and an automatic exhaust valve 3502 are provided on the first recovery oil circuit 350. The second valve 3501 is used to control the on-off of the first recovery oil circuit 350, and the automatic exhaust valve 3502 is used to discharge the gas on the first recovery oil circuit 350.

[0158] A second oil recovery circuit 360 is provided between the sampler 39 and the oil recovery tank 340, and the remaining fuel in the sampler 39 can be transported to the oil recovery tank 340 through the second oil recovery circuit 360. Furthermore, a third valve 3601 is provided on the second oil recovery circuit 360, and the third valve 3601 is used to control the on-off of the second oil recovery circuit 360.

[0159] The bottom of the oil recovery tank 340 is connected to a third sewage pipeline, and a third sewage valve 3401 is provided at the end of the third sewage pipeline.

[0160] See also Fig.14 The refueling skid unit 3 further includes a pressure relief pipeline 370, the first end of which is connected to the filter separator 32, and the second end of which is connected to the second oil recovery pipeline 360 ​​and is located downstream of the third valve 3601; the pressure relief pipeline 370 is provided with a second safety valve 3701 and a fourth valve 3702, and the second safety valve 3701 is located downstream of the fourth valve 3702. The second safety valve 3701 can be used to relieve pressure on the pipeline system in the refueling skid unit 3, thereby ensuring the safety of the refueling skid unit 3.

[0161] See also Fig.14 The refueling skid unit 3 further includes a differential pressure gauge 3801 disposed in the second outer box assembly 31. The differential pressure gauge 3801 is arranged in parallel with the filter separator 32. The fifth valve 3102 is arranged between the differential pressure gauge 3801 and the upstream of the filter separator 32, and the seventh valve 3302 is arranged between the differential pressure gauge 3801 and the downstream of the filter separator 32. Specifically, a differential pressure measuring pipeline 380 is arranged between the upstream and downstream of the filter separator 32. The differential pressure gauge 3801 is arranged on the differential pressure measuring pipeline 380. The first end of the differential pressure measuring pipeline 380 is connected to the first sampling pipeline 310 and is located between the fifth valve 3102 and the third sampling valve 3101; the second end of the differential pressure measuring pipeline 380 is connected to the third sampling pipeline 330 and is located between the seventh valve 3302 and the fifth sampling valve 3301. The differential pressure gauge 3801 can measure the pressure difference before and after the filter separator 32 to monitor the fuel filtration process.

[0162] See also Figure 5 and Figure 6 The refueling skid unit 3 also includes a second alarm light 390 and a second explosion-proof electric control cabinet 3100. The second alarm light 390 is installed on the top of the second outer box assembly 31. The second explosion-proof electric control cabinet 3100 is arranged in the second outer box assembly 31 to prevent dust and moisture. The second explosion-proof electric control cabinet 3100 is connected to the electric control components in the refueling skid unit 3 to control the electric control components. The second alarm light 390 is connected to the second explosion-proof electric control cabinet 3100 to send out an alarm and remind the operator in time when the refueling skid unit 3 operates abnormally.

[0163] like Fig.15 , Fig.16 as well as Fig.17 As shown, the load-bearing bracket 11 includes a fixed bracket 111, a sliding bracket 112 and a release mechanism 113. The fixed bracket 111 is provided with a first sliding surface 1111, the sliding bracket 112 is provided above the fixed bracket 111, the sliding bracket 112 is provided with a second sliding surface 1121 and a hook portion 1122, the second sliding surface 1121 can slide with the first sliding surface 1111, and the tank assembly is installed on the sliding bracket 112. The side views of the fixed bracket 111 and the sliding bracket 112 are both right triangles, and the first inclined surface 1111 and the second inclined surface 1121 are arranged to be inclined relative to the horizontal plane.

[0164] The release mechanism 113 includes a telescopic drive mechanism 1131 and a rocker arm lock hook 1132. The telescopic drive mechanism 1131 includes a mounting shell 11311 and a telescopic rod 11312. The mounting shell 11311 is hinged to the fixed bracket 111. The telescopic rod 11312 is telescopically arranged on the mounting shell 11311 and is hinged to the first end of the rocker arm lock hook 1132. The second end of the rocker arm lock hook 1132 is provided with a hook groove 11321. The rocker arm lock hook 1132 is rotatably connected to the fixed bracket 111 around a swing center O, and the swing center O is located between the first end and the second end of the rocker arm lock hook 1132. The hook groove 11321 is detachably engaged with the hook portion 1122.

[0165] The rocker arm lock hook 1132 can swing and switch between the hook position and the release position under the drive of the telescopic driving mechanism 1131. The hook position is the position where the rocker arm lock hook 1132 is engaged with the hook portion 1122 through the hook slot 11321, and the release position is the position where the rocker arm lock hook 1132 is unhooked from the hook portion 1122 through the hook slot 11321. In the release position, the sliding bracket 112 can slide down along the fixed bracket 111 under the action of its own gravity.

[0166] Specifically, when an emergency occurs, the telescopic rod 11312 of the telescopic drive mechanism 1131 is driven downward to drive the rocker arm lock hook 1132 to swing around the swing center O, the first end of the rocker arm lock hook 1132 descends, and the second end rises, so that the hook groove 11321 at the second end moves up and disengages from the hook portion 1122 on the sliding bracket 112, thereby releasing the connection between the fixed bracket 111 and the sliding bracket 112, so that the sliding bracket 112 and the tank container assembly installed on the sliding bracket 112 can be thrown into the sea in an emergency under the action of gravity.

[0167] Exemplarily, the telescopic driving mechanism 1131 may be a pneumatic cylinder, an oil cylinder, or an electric push rod.

[0168] like Fig.15 and Fig.18 As shown, a locking mechanism is provided on the sliding bracket 112 of the supporting bracket 11, and the locking mechanism includes a mounting seat and a locking member 12 rotatably provided on the mounting seat, and the locking member 12 has an unlocking position and a locking position, and rotates between the unlocking position and the locking position. A strip hole is provided on the tank container assembly, and the locking member 12 in the unlocking position can pass through the strip hole and rotate to the locking position of the hooking strip hole, so that the tank container assembly is stably mounted on the supporting bracket 11.

[0169] Specifically, the locking member 12 includes a locking portion 121 and a rotating portion 122. The locking portion 121 is in a bar shape, and the rotating portion 122 is used to drive the locking portion 121 to rotate between a locked position and an unlocked position. The bar-shaped locking portion 121 can pass through the bar-shaped hole on the tank assembly, and then the locking portion 121 is driven to rotate by the rotating portion 122, for example, after rotating 90 degrees, the bar-shaped locking portion 121 is hooked with the bar-shaped hole to prevent the locking portion 121 from slipping out of the bar-shaped hole.

[0170] In this embodiment, the tank container assembly includes a tank body and a frame, the tank body is located in the frame, and the frame is connected to the sliding bracket 112. Both the tank container assembly and the load-bearing bracket 11 are anti-corrosion measures.

[0171] 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. Offshore platform helicopter refueling system, characterized in that: include: An oil storage unit (1) comprises a load-bearing bracket (11) and a tank assembly for storing oil, wherein the tank assembly is mounted on the load-bearing bracket (11); A pump skid unit (2) comprises a first outer box assembly (21) and an oil pump assembly (22) arranged in the first outer box assembly (21), wherein the inlet of the oil pump assembly (22) is communicated with the tank assembly, the first outer box assembly (21) comprises a first skid outer frame (211) and a first skid bottom frame (212), a first lifting ring (2111) is arranged at the top of the first skid outer frame (211), the first skid bottom frame (212) is connected to the bottom of the first skid outer frame (211) and is provided with a first fork hole (2121), and the first fork hole (2121) is configured to be used for inserting a fork plate of a forklift; A refueling skid unit (3) comprises a second outer box assembly (31) and a filter separator (32) and a refueling gun (33) arranged in the second outer box assembly (31); the outlet of the oil pump assembly (22) is connected to the refueling gun (33) through the filter separator (32); the second outer box assembly (31) comprises a second skid outer frame (311) and a second skid bottom frame (312); a second lifting ring (3111) is arranged at the top of the second skid outer frame (311); the second skid bottom frame (312) is connected to the bottom of the second skid outer frame (311) and is provided with a second fork hole (3121); the second fork hole (3121) is configured to be used for inserting a fork plate of a forklift.

2. The offshore platform helicopter refueling system according to claim 1, characterized in that: The pump skid unit (2) further comprises a first input oil circuit (23) and a first output oil circuit (24) arranged in the first outer box assembly (21); a first branch oil circuit (25) and a second branch oil circuit (26) connected in parallel to each other are arranged between the first input oil circuit (23) and the first output oil circuit (24); The oil pump assembly (22) comprises a first oil pump (221) and a second oil pump (222); the first oil pump (221) is arranged in the first oil branch path (25), and the second oil pump (222) is arranged in the second oil branch path (26); and one of the first oil pump (221) and the second oil pump (222) is selectively started.

3. The offshore platform helicopter refueling system according to claim 2, characterized in that: The first oil branch passage (25) is provided with a first filter (251), and the first filter (251) is located upstream of the first oil pump (221); and / or, a second filter (261) is provided on the second oil branch passage (26), and the second filter (261) is located upstream of the second oil pump (222); and / or, a first ball valve (252) is provided on the first oil branch path (25) upstream of the first oil pump (221), and a second ball valve (253) is provided downstream of the first oil pump (221), and a first check valve (254) is provided between the first oil pump (221) and the second ball valve (253); and / or, a third ball valve (262) is provided on the second oil branch path (26) upstream of the second oil pump (222), and a fourth ball valve (263) is provided downstream of the second oil pump (222), and a second check valve (264) is provided between the second oil pump (222) and the fourth ball valve (263); and / or, a first sampling valve (255) is provided on the first oil branch path (25) downstream of the first oil pump (221); And / or, a second sampling valve (265) is provided on the second oil branch path (26) downstream of the second oil pump (222).

4. The offshore platform helicopter refueling system according to claim 2, characterized in that: A third oil branch passage (27) is further provided between the first input oil passage (23) and the first output oil passage (24), and the third oil branch passage (27) is provided in parallel with the first oil branch passage (25) and the second oil branch passage (26); a fifth ball valve (271), a first safety valve (272), and a sixth ball valve (273) are provided in sequence from upstream to downstream on the third oil branch passage (27); And / or, a first pressure gauge (241) is provided on the first output oil circuit (24); And / or, the outlet of the first output oil circuit (24) is connected to a seventh ball valve (28), and the seventh ball valve (28) is located outside the first outer box assembly (21).

5. The offshore platform helicopter refueling system according to claim 1, characterized in that: The refueling skid unit (3) comprises a second input oil circuit (34), a second output oil circuit (35) and a hose reel (36) arranged in the second outer box assembly (31); the filter separator (32) is arranged between the second input oil circuit (34) and the second output oil circuit (35); The second input oil circuit (34) is provided with a flow meter (341) and a first valve (342); And / or, an oil delivery pipe (361) is wound around the hose reel (36), and the second output oil path (35) is connected to the refueling gun (33) through the oil delivery pipe (361); and / or, a second pressure gauge (351) is provided on the second output oil circuit (35); and / or, the second output oil circuit (35) is connected to a first drain valve (352); And / or, an electrostatic grounding protection reel (37) is provided in the second outer box assembly (31); And / or, an eighth ball valve (38) is connected to the inlet of the second input oil circuit (34), and the eighth ball valve (38) can be connected to the outlet of the oil pump assembly (22).

6. The offshore platform helicopter refueling system according to claim 5, characterized in that: The refueling skid unit (3) further comprises a sampler (39), wherein a first sampling pipeline (310), a second sampling pipeline (320) and a third sampling pipeline (330) connected in parallel to each other are arranged between the first valve (342) and the sampler (39); the filter separator (32) comprises a filter inlet (321), an intermediate outlet (322) and a filter outlet (323), the second input oil circuit (34) is connected to the filter inlet (321), the second output oil circuit (35) is connected to the filter outlet (323), and the intermediate outlet (322) is located between the filter inlet (321) and the filter outlet (323); The oil inlet end of the first sampling pipeline (310) is connected between the first valve (342) and the filter inlet (321), the oil outlet end of the first sampling pipeline (310) is connected to the sampler (39), and a third sampling valve (3101) is provided on the first sampling pipeline (310); The oil inlet end of the second sampling pipeline (320) is connected to the middle outlet (322), the oil outlet end of the second sampling pipeline (320) is connected to the sampler (39), and a fourth sampling valve (3201) is provided on the second sampling pipeline (320); The oil inlet end of the third sampling pipeline (330) is connected between the filter outlet (323) and the second output oil circuit (35), the oil outlet end of the third sampling pipeline (330) is connected to the sampler (39), and a fifth sampling valve (3301) is provided on the third sampling pipeline (330).

7. The offshore platform helicopter refueling system according to claim 6, characterized in that: The refueling skid unit (3) also includes a recovery oil tank (340); A first oil recovery circuit (350) is connected between the intermediate outlet (322) and the oil recovery tank (340), and a second valve (3501) and an automatic exhaust valve (3502) are provided on the first oil recovery circuit (350); A second oil recovery circuit (360) is provided between the sampler (39) and the oil recovery tank (340), and a third valve (3601) is provided on the second oil recovery circuit (360).

8. The offshore platform helicopter refueling system according to claim 7, characterized in that: The refueling skid unit (3) further comprises a pressure relief pipeline (370), wherein a first end of the pressure relief pipeline (370) is connected to the filter separator (32), and a second end of the pressure relief pipeline (370) is connected to the second oil recovery circuit (360) and is located downstream of the third valve (3601); The pressure relief pipeline (370) is provided with a second safety valve (3701) and a fourth valve (3702), and the second safety valve (3701) is located downstream of the fourth valve (3702).

9. The offshore platform helicopter refueling system according to claim 1, characterized in that: The refueling skid unit (3) further comprises a differential pressure gauge (3801) arranged in the second outer box assembly (31); the differential pressure gauge (3801) is arranged in parallel with the filter separator (32); a fifth valve (3102) is arranged between the differential pressure gauge (3801) and the upstream of the filter separator (32); and a seventh valve (3302) is arranged between the differential pressure gauge (3801) and the downstream of the filter separator (32).

10. The offshore platform helicopter refueling system according to any one of claims 1 to 9, characterized in that: The load-bearing bracket (11) comprises: A fixed bracket (111), wherein the fixed bracket (111) is provided with a first sliding surface (1111), A sliding bracket (112) is arranged above the fixed bracket (111); a second sliding surface (1121) and a hook portion (1122) are arranged on the sliding bracket (112); the second sliding surface (1121) can be slidably matched with the first sliding surface (1111); the tank assembly is installed on the sliding bracket (112); A release mechanism (113), comprising a telescopic drive mechanism (1131) and a rocker arm lock hook (1132), wherein the telescopic drive mechanism (1131) comprises a mounting shell (11311) and a telescopic rod (11312), wherein the mounting shell (11311) is hinged to the fixed bracket (111), wherein the telescopic rod (11312) is telescopically arranged on the mounting shell (11311) and is hinged to the first end of the rocker arm lock hook (1132), wherein the second end of the rocker arm lock hook (1132) is provided with a hooking groove (11321), wherein the rocker arm lock hook (1132) is rotatably connected to the fixed bracket (111) around a swing center (O), wherein the swing center (O) is located between the first end and the second end of the rocker arm lock hook (1132), and wherein the hooking groove (11321) is detachably engaged with the hooking portion (1122); The rocker arm lock hook (1132) can be swung and switched between a hook position and a release position under the drive of the telescopic drive mechanism (1131); the hook position is a position where the rocker arm lock hook (1132) is engaged with the hook portion (1122) through the hook slot (11321); and the release position is a position where the rocker arm lock hook (1132) is unhooked from the hook portion (1122) through the hook slot (11321); when in the release position, the sliding bracket (112) can slide down along the fixed bracket (111) under the action of its own gravity; and / or, A locking member (12) is rotatably provided on the supporting bracket (11), and the locking member (12) has an unlocking position and a locking position. A strip hole is provided on the tank box assembly, and the locking member (12) in the unlocking position can pass through the strip hole and rotate to the locking position to hook the strip hole.

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