Marine LNG (Liquefied Natural Gas) fuel and diesel oil double-source supply monitoring and control device

Abstract

The invention relates to the technical field of marine fuel supply, in particular to a marine LNG fuel and diesel oil double-source supply monitoring and control device which comprises a fixing base, a conveying pump, a diesel oil fuel tank and a spring pipe, the conveying pump and the diesel oil fuel tank are fixed to the top end of the fixing base, and the spring pipe is fixed to the outer portion of the diesel oil fuel tank in a winding mode. A cavity base is fixedly installed at the top end of the diesel fuel tank through a support, and waste hot water of a ship can be automatically guided into a spring pipe in a circulating mode under the low-temperature condition, so that it is guaranteed that the whole diesel fuel tank is evenly heated and subjected to heat preservation, and stable physical and chemical properties of fuel are maintained; meanwhile, hot water drives a hollow copper rod and a copper stirring rod to rotate in the diesel fuel tank during circulation, heat of the hot water can be conducted into fuel through good heat conductivity of the hot water, on the other hand, convection is promoted to be formed in the fuel through rotation of the copper stirring rod, heat exchange of the fuel in different areas is accelerated, the fuel temperature is more uniform, and the fuel efficiency is improved. And stable supply is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of marine fuel supply, and particularly to a monitoring and control device for dual-source supply of marine LNG fuel and diesel fuel. Background Technique

[0002] A ship is an artificial means of transportation mainly operating in geographical waters. It mainly includes an accommodation space, a support structure, and a drainage structure inside, and has a propulsion system that utilizes external or self-provided energy. Its energy supply often adopts a dual-tank configuration mode of LNG fuel and diesel fuel to balance power stability and environmental protection requirements. The marine fuel supply device constructs an independent and coordinated storage, transportation, and control system around the two types of fuels. Among them, the monitoring and control of diesel fuel are particularly crucial. The liquid level sensor is used to track the liquid level of the diesel storage tank in real time. The transfer pump transports the diesel to the engine after filtration and flow control according to the instructions. The pressure sensor is linked with the automation system to adjust the pipeline pressure to ensure the stable supply of diesel.

[0003] However, in special sea areas, the low-temperature environment poses a series of severe challenges to the marine fuel supply device. Under low-temperature conditions, the physical properties of marine fuels change significantly. Taking the common mixed fuel of marine diesel and biodiesel as an example, the wax components contained in diesel will gradually crystallize and precipitate at low temperatures. As the temperature decreases, the wax crystals continuously aggregate and grow, resulting in a sharp increase in the fuel viscosity, greatly increasing the resistance of the fuel to flow in the pipeline, causing the transfer pump to consume more energy to maintain the fuel flow, and even completely stopping the fuel flow in severe cases, interrupting the fuel supply to the engine and threatening the navigation safety of the ship. Summary of the Invention

[0004] The purpose of the present invention is to provide a monitoring and control device for dual-source supply of marine LNG fuel and diesel fuel to solve the problems raised in the above background technique that under low-temperature conditions, the physical properties of marine fuels change significantly. As the temperature decreases, the wax crystals continuously aggregate and grow, resulting in a sharp increase in the fuel viscosity, greatly increasing the resistance of the fuel to flow in the pipeline.

[0005] To achieve the above object, the present invention provides the following technical solution: A marine LNG fuel and diesel dual-source supply monitoring and control device, including a fixed seat, a delivery pump and a diesel fuel tank fixed on the top of the fixed seat, and a bourdon tube wound and fixed outside the diesel fuel tank. A LNG fuel tank is installed on one side of the top of the fixed seat. A cavity seat is fixedly installed on the top of the diesel fuel tank through a bracket. An inlet pipe and an outlet pipe are arranged in a staggered and symmetrically conducting manner on both sides of the cavity seat. A monitoring and control component is arranged inside one side of the inlet pipe. A hollow copper rod is longitudinally and rotationally sealed and installed inside the cavity seat. The bottom end of the hollow copper rod passes through and is rotationally sealed and installed inside one side of the diesel fuel tank. A disc is fixedly installed outside the rotationally penetrating end of the top end of the hollow copper rod. A pour point depressant injection component and a scale inhibitor injection component are arranged on the top of the disc. The monitoring and control component includes a control valve and an alloy memory spring. The control valve is fixedly installed through the side inside of the inlet pipe. The alloy memory spring is horizontally placed outside the top side of the inlet pipe near the control valve.

[0006] Further, a delivery pipe is fixedly installed in a conducting manner between the input end of the delivery pump and the inside of one side of the bottom end of the diesel fuel tank. The output end of the outlet pipe is fixedly connected to the input end of the bourdon tube in a conducting manner. The output end of the bourdon tube is fixedly connected to a discharge pipe in a conducting manner.

[0007] Further, a limit block is fixedly installed outside the top side of the inlet pipe near the alloy memory spring. A limit chute is embedded inside the top end of the limit block. A sliding seat is slidably engaged and installed inside the limit chute. A rack is slidably installed through one side of the limit chute.

[0008] Further, one end of the rack is fixedly installed with the end of the sliding seat. A gear is fixedly installed at the top of the valve stem of the control valve. One side of the gear is meshed and connected with one side of the rack. Both ends of the alloy memory spring are respectively installed on one side of the sliding seat and the inner wall of the limit chute.

[0009] Further, a liquid storage tank one and a liquid storage tank two are fixedly installed on both sides of the top of the fixed seat. A limit post is fixedly installed at the edge of one side of the top of the disc. A limit frame is arranged outside the limit post. A limit groove is arranged through the inside of the limit frame. The limit post and the limit groove are in a through-sliding connection.

[0010] Further, the pour point depressant injection component includes a piston rod one and a suction cylinder one. The piston rod one is horizontally and slidably installed outside one side of the top of the cavity seat through a bracket. The suction cylinder one is fixedly installed outside one side of the top of the cavity seat near the piston rod one through a bracket. One end of the piston rod one is fixedly installed at the middle position of the outside of one side of the limit frame. The piston end of the piston rod one is slidably sealed and installed inside one side of the suction cylinder one.

[0011] Further, a one-way liquid inlet valve pipe 1 and a one-way liquid discharge valve pipe 1 are fixedly installed through the inside of one side of the suction cylinder away from the limit frame. The input end of the one-way liquid inlet valve pipe 1 is fixedly installed through the inside of one side at the bottom end of the liquid storage tank 1. The output end of the one-way liquid discharge valve pipe 1 is conductively fixedly installed with a sealing rotating sleeve. The outside of the output end of the one-way liquid discharge valve pipe 1 is fixedly provided with a mounting seat, and one end of the mounting seat is fixedly installed on the outside of one side at the bottom end of the cavity seat.

[0012] Further, the sealing rotating sleeve is installed through rotation and sealing on the outside of one side of the hollow copper rod. A plurality of liquid inlet holes are arranged around and through the inside of one side of the hollow copper rod near the sealing rotating sleeve at equal angles.

[0013] Further, a plurality of copper stirring rods are fixedly installed obliquely at equal angles on the outside of the hollow copper rod located inside the diesel fuel tank. Nozzles are fixedly installed on the outside of one side of each of the plurality of copper stirring rods. The input ends of the nozzles are fixedly installed through the inside of one side of the hollow copper rod.

[0014] Further, the scale inhibitor injection assembly includes a piston rod 2 and a suction cylinder 2. The piston rod 2 is installed through the outside of one side at the top end of the cavity seat away from the piston rod 1 through a bracket in a transverse sliding manner. The suction cylinder 2 is fixedly installed on the outside of one side at the top end of the cavity seat near the piston rod 2 through a bracket. One end of the piston rod 2 is fixedly installed at the middle position of the outside of one side of the limit frame. The piston end of the piston rod 2 is installed in a sliding and sealing manner inside one side of the suction cylinder 1. A one-way liquid inlet valve pipe 2 and a one-way liquid discharge valve pipe 2 are fixedly installed through the inside of one side of the suction cylinder 2 away from the limit frame. The input end of the one-way liquid inlet valve pipe 2 is fixedly installed through the inside of one side at the bottom end of the liquid storage tank 2. The output end of the one-way liquid discharge valve pipe 2 is conductively fixedly installed inside one side at the top end of the cavity seat.

[0015] Compared with the prior art, the beneficial effects of the present invention are: By monitoring the settings of the control component and the bourdon tube, the fuel supply device can be monitored and automatically controlled according to the change of temperature during use. When encountering low temperature, the waste hot water of the ship can be automatically circulated into the interior of the bourdon tube to ensure that the diesel fuel tank is evenly heated and insulated as a whole, maintaining the stable physical and chemical properties of the fuel. At the same time, by using the waste heat generated during the operation of the ship, secondary recovery and utilization of energy are realized, reducing the consumption of fuel or electric energy by additional heating equipment, saving energy and reducing emissions. At the same time, when the hot water circulates, it drives the hollow copper rod and the copper stirring rod to rotate inside the diesel fuel tank. Through its good thermal conductivity, the heat of the hot water can be conducted into the fuel. On the other hand, the rotation of the copper stirring rod promotes the formation of convection inside the fuel, accelerating the heat exchange of the fuel in different regions, making the fuel temperature more uniform, effectively improving the heat transfer efficiency and the heating rate. When the device is used in a low-temperature environment, it can automatically detect and trigger the combination of external and internal temperature increase methods to achieve overall rapid temperature increase control and ensure stable fuel supply; Through the settings of the disc, the limit post and the limit frame, when the waste hot water circulation impacts and drives the hollow copper rod to rotate, it will drive the operation of the pour point depressant injection component, so as to quantitatively inject the pour point depressant in the first storage tank into the fuel. Thus, it can adsorb on the surface of the wax crystals in the fuel at low temperature, change the growth habit of the wax crystals, prevent the wax crystals from aggregating with each other to form large crystal particles, thereby reducing the pour point of the fuel and improving its low-temperature fluidity. At the same time, when the waste hot water drives the hollow copper rod to rotate, it will also trigger the operation of the scale inhibitor injection component, so as to inject the scale inhibitor into the waste hot water, thereby preventing the scale from depositing and condensing in the surrounding bourdon tube, affecting the subsequent heat conduction and temperature increase effect, effectively cleaning the water quality, prolonging the service life and the use effect of the bourdon tube, and ensuring the overall stable operation. Brief Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic perspective sectional structure diagram of the installation of the diesel fuel tank and the hollow copper rod of the present invention; Figure 3 For the present invention Figure 2 The enlarged structure diagram at A in; Figure 4 It is a schematic perspective structure diagram of the installation of the cavity seat and the hollow copper rod of the present invention; Figure 5 For the present invention Figure 4 The enlarged structure diagram at B in; Figure 6 For the present invention Figure 4 The enlarged structure diagram at C in; Figure 7 It is a schematic perspective sectional structure diagram of the installation of the hollow copper rod and the sealed rotating sleeve of the present invention; Figure 8 This is the schematic front sectional view of the installation of the first piston rod of the present invention and the first suction cylinder; Figure 9 This is the schematic top view of the whole of the present invention.

[0017] In the drawings, the list of components represented by each reference numeral is as follows: 1. Fixed seat; 2. Delivery pump; 3. Delivery pipe; 4. Diesel fuel tank; 5. Bourdon tube; 6. Cavity seat; 7. Inlet pipe; 8. Outlet pipe; 9. Control valve; 10. Gear; 11. Limit block; 12. Limit chute; 13. Rack; 14. Slide seat; 15. Alloy memory spring; 16. Discharge pipe; 17. First liquid storage tank; 18. Second liquid storage tank; 19. Hollow copper rod; 20. Fan blade; 21. Disc; 22. Limit post; 23. Limit frame; 24. Limit groove; 25. First piston rod; 26. Second piston rod; 27. First suction cylinder; 28. Second suction cylinder; 29. First one-way liquid inlet valve pipe; 30. First one-way liquid discharge valve pipe; 31. Mounting seat; 32. Sealed rotating sleeve; 33. Liquid inlet hole; 34. Copper stirring rod; 35. Sprinkler pipe; 36. Second one-way liquid inlet valve pipe; 37. Second one-way liquid discharge valve pipe; 38. LNG fuel tank. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment 1: Please refer to Figure 1 - Figure 4 , a marine LNG fuel and diesel dual-source supply monitoring and control device, including a fixed seat 1, a delivery pump 2 fixed at the top of the fixed seat 1 and a diesel fuel tank 4, and a Bourdon tube 5 wound and fixed outside the diesel fuel tank 4. An LNG fuel tank 38 is installed on one side of the top of the fixed seat 1. A cavity seat 6 is fixedly installed at the top of the diesel fuel tank 4 through a bracket. An inlet pipe 7 and an outlet pipe 8 are alternately and symmetrically communicated on both sides of the cavity seat 6. A monitoring and control component is arranged inside one side of the inlet pipe 7. A hollow copper rod 19 is longitudinally and rotatably and sealingly installed through the cavity seat 6. The bottom end of the hollow copper rod 19 is rotatably and sealingly installed through one side inside the diesel fuel tank 4. The monitoring and control component includes a control valve 9 and an alloy memory spring 15. The control valve 9 is fixedly installed through one side inside the inlet pipe 7. The alloy memory spring 15 is horizontally placed outside the top side of the inlet pipe 7 close to the control valve 9.

[0020] A delivery pipe 3 is fixedly installed in a conducting manner between the input end of the delivery pump 2 and the inside of one side at the bottom end of the diesel fuel tank 4. The output end of the outlet pipe 8 is fixedly connected to the input end of the bellows 5 in a conducting manner, and the output end of the bellows 5 is fixedly connected to a discharge pipe 16 in a conducting manner.

[0021] A limit block 11 is fixedly installed on the outside of one side of the inlet pipe 7 close to the top end of the shape memory alloy spring 15. A limit chute 12 is embedded in the top end of the limit block 11. A sliding seat 14 is slidably engaged and installed inside the limit chute 12, and a rack 13 is slidably installed through one side of the limit chute 12.

[0022] Specifically, through the sliding engagement design of the sliding seat 14 and the limit chute 12, the shape memory alloy spring 15 can be driven to deform more smoothly and stably, ensuring the stability of the overall monitoring trigger operation and the overall use effect.

[0023] One end of the rack 13 is fixedly installed with the one end of the sliding seat 14. The top end of the valve stem of the control valve 9 is fixedly installed with a gear 10. One side of the gear 10 is meshed and connected with one side of the rack 13. Both ends of the shape memory alloy spring 15 are respectively installed on one side of the sliding seat 14 and the inner wall of the limit chute 12.

[0024] In this embodiment, when the ship is sailing, through the start of the delivery pump 2 and the conduction of the delivery pipe 3, the fuel inside the diesel fuel tank 4 is conveyed into the engine for continuous supply. When encountering low-temperature weather, the existing shape memory alloy spring 15 will contract at this time. When the shape memory alloy spring 15 contracts, it will pull the sliding seat 14 and the rack 13 on one side to move in the limit chute 12 inside the limit block 11. When moving, the rack 13 drives the gear 10 meshed on one side to rotate. Through the rotation of the gear 10, the valve stem inside the control valve 9 is driven to rotate, so that the control valve 9 is opened, and thus the marine waste hot water is introduced into the cavity seat 6, the outlet pipe 8 and the bellows 5. Through the supply of the circulating waste hot water, the overall uniform heating and heat preservation of the diesel fuel tank 4 are ensured, and the stable physical and chemical properties of the fuel are maintained. At the same time, by using the waste heat generated by the ship operation, the secondary recovery and utilization of energy are realized, the consumption of fuel or electric energy by additional heating equipment is reduced, and energy conservation and emission reduction are achieved.

[0025] It should also be noted that when the hot water circulates, it will impact and drive the fan blade 20 inside the cavity seat 6 to rotate, thereby driving the hollow copper rod 19 and the copper stirring rod 34 to rotate inside the diesel fuel tank 4. Through the good thermal conductivity of the hollow copper rod 19 and the copper stirring rod 34, the heat of the hot water can be conducted to the fuel. On the other hand, the rotation of the copper stirring rod 34 promotes the formation of convection inside the fuel, accelerating the heat exchange of the fuel in different regions, making the fuel temperature more uniform, effectively improving the heat transfer efficiency and the heating rate. In summary, when the device is used in a low-temperature environment, it can automatically detect and trigger, combine the external heating and the internal heating methods, achieve overall rapid heating control, and ensure stable fuel supply.

[0026] It should also be noted that when the ship sails out of the low-temperature environment, at this time, the alloy memory spring 15 begins to reset and stretch, thereby driving the limit block 11 and the rack 13 to move back, and driving the gear 10 to reset and rotate, so that the control valve 9 is closed, with overall automatic monitoring and control, and good overall use effect.

[0027] Embodiment 2: Please refer to Figure 5 - Figure 9 , this embodiment further explains Embodiment 1. A disc 21 is fixedly installed outside the rotating through end at the top of the hollow copper rod 19, and a pour point depressant injection assembly and a scale inhibitor injection assembly are arranged at the top of the disc 21.

[0028] On both sides of the top of the fixed seat 1, a liquid storage tank 17 and a liquid storage tank 18 are fixedly installed. At one side edge of the top of the disc 21, a limit post 22 is fixedly installed. An outer limit frame 23 is arranged outside the limit post 22, and a limit groove 24 is arranged inside the limit frame 23. The limit post 22 and the limit groove 24 are in through-sliding connection.

[0029] The pour point depressant injection assembly includes a piston rod 25 and a suction cylinder 27. The piston rod 25 is horizontally installed through the top of the cavity seat 6 on one side through a bracket in a sliding manner, and the suction cylinder 27 is fixedly installed on the outside of the top of the cavity seat 6 close to the piston rod 25 through a bracket. One end of the piston rod 25 is fixedly installed at the middle position of the outside of one side of the limit frame 23, and the piston end of the piston rod 25 is slidably and sealingly installed inside one side of the suction cylinder 27.

[0030] A one-way liquid inlet valve pipe 29 and a one-way liquid discharge valve pipe 30 are fixedly installed through the inside of the side of the suction cylinder 27 away from the limit frame 23. The input end of the one-way liquid inlet valve pipe 29 is fixedly installed through the bottom side inside the liquid storage tank 17, and the output end of the one-way liquid discharge valve pipe 30 is conductively fixedly installed with a sealing rotating sleeve 32. The outside of the output end of the one-way liquid discharge valve pipe 30 is fixedly penetrated with a mounting seat 31, and one end of the mounting seat 31 is fixedly installed on the outside of the bottom side of the cavity seat 6.

[0031] Specifically, when the piston rod 25 sucks, the pour point depressant inside the liquid storage tank 17 is sucked into the inside of the suction cylinder 27 through the one-way liquid inlet valve pipe 29. During suction, the pour point depressant can only be sucked in from the inside of the one-way liquid inlet valve pipe 29 and cannot be sucked back reversely from the one-way liquid discharge valve pipe 30. At the same time, during extrusion, the sucked pour point depressant can only be discharged from the one-way liquid discharge valve pipe 30 and cannot flow back to the inside of the liquid storage tank 17 from the one-way liquid inlet valve pipe 29, forming a one-way transportation.

[0032] The sealed rotating sleeve 32 is rotatably and sealingly installed through the outside of one side of the hollow copper rod 19, and a plurality of liquid inlet holes 33 are arranged around and through the inside of one side of the hollow copper rod 19 close to the sealed rotating sleeve 32 at equal angles.

[0033] Specifically, through the rotatable and sealing installation of the sealed rotating sleeve 32 and the hollow copper rod 19 and the arrangement of a plurality of liquid inlet holes 33 outside the hollow copper rod 19, when the hollow copper rod 19 rotates, the one-way liquid discharge valve pipe 30 can also inject the pour point depressant into the inside of the hollow copper rod 19 through the plurality of liquid inlet holes 33, thereby ensuring the overall operation stability and the overall use effect.

[0034] A plurality of copper stirring rods 34 are fixedly installed on the outside of the hollow copper rod 19 at equal angles and obliquely on the outside of the diesel fuel tank 4. Nozzles 35 are fixedly installed on the outside of one side of the plurality of copper stirring rods 34, and the input ends of the nozzles 35 are fixedly installed through the inside of one side of the hollow copper rod 19.

[0035] The scale inhibitor injection assembly includes a piston rod 26 and a suction cylinder 28. The piston rod 26 is horizontally and slidably installed through a bracket on the outside of the top of the cavity seat 6 away from the piston rod 25. The suction cylinder 28 is fixedly installed on the outside of the top of the cavity seat 6 close to the piston rod 26 through a bracket. One end of the piston rod 26 is fixedly installed at the middle position of the outside of one side of the limit frame 23. The piston end of the piston rod 26 is slidably and sealingly installed inside one side of the suction cylinder 27. A one-way liquid inlet valve pipe 36 and a one-way liquid discharge valve pipe 37 are fixedly installed through the inside of one side of the suction cylinder 28 away from the limit frame 23. The input end of the one-way liquid inlet valve pipe 36 is fixedly installed through the inside of the bottom of one side of the liquid storage tank 2 18. The output end of the one-way liquid discharge valve pipe 37 is conductively fixedly installed inside the top of one side of the cavity seat 6.

[0036] Specifically, when the piston rod 26 is sucking, the freezing point depressant inside the liquid storage tank 18 is sucked into the interior of the suction cylinder 28 through the one-way liquid inlet valve tube 236. During suction, the scale inhibitor can only be sucked in from the one-way liquid inlet valve tube 236 and cannot be sucked back from the one-way liquid discharge valve tube 237. At the same time, during squeezing, the sucked-in scale inhibitor can only be discharged from the one-way liquid discharge valve tube 237 and cannot flow back from the one-way liquid inlet valve tube 236 to the interior of the liquid storage tank 18, thereby forming a one-way transport to ensure the overall stable operation.

[0037] In this embodiment, when hot water circulates, it impacts and drives the fan blades 20 inside the cavity seat 6 to rotate, thereby driving the hollow copper rod 19 and the copper stirring rod 34 to rotate inside the diesel fuel tank 4. The rotation of the hollow copper rod 19 drives the disk 21 fixed on the top outside to rotate synchronously, and the rotation of the disk 21 drives the limit column 22 to rotate synchronously. The limit column 22 and the limit groove 24 inside the limit frame 23 are slidably engaged, so that the limit column 22 drives one side of the piston rod 25 to reciprocate inside the suction cylinder 27 when rotating, and at the same time cooperates with the one-way liquid inlet valve tube 29 and the liquid storage tank 1 The conduction of 17 and the conduction of the one-way liquid discharge valve tube 30 and the hollow copper rod 19 enable the piston rod 25 to reciprocate inside the suction cylinder 27 to quantitatively suck and squeeze the pour point depressant previously stored in the liquid storage tank 17 into the interior of the hollow copper rod 19, and then the quantitative pour point depressant is evenly mixed and discharged into the fuel inside the diesel fuel tank 4 through a plurality of nozzle tubes 35 conducted to the outside of the hollow copper rod 19, so that it can be adsorbed on the surface of the wax crystals in the fuel at low temperature, change the growth habits of the wax crystals, and prevent the wax crystals from aggregating with each other to form large crystalline particles, thereby reducing the freezing point of the fuel, improving its low-temperature fluidity, and ensuring the overall use effect.

[0038] It should also be noted that when the limit column 22 rotates to drive the piston rod 25 on one side to reciprocate inside the suction cylinder 27, it will drive the piston rod 26 on the other side of the limit frame 23 to reciprocate inside the suction cylinder 28. At the same time, with the connection between the one-way liquid inlet valve tube 236 and the liquid storage tank 218 and the one-way liquid discharge valve tube 237 and the top side of the cavity seat 6, the piston rod 26 will reciprocate inside the suction cylinder 28. The scale inhibitor pre-stored in the liquid storage tank 218 will be quantitatively sucked and squeezed into the cavity seat 6 when it reciprocates inside the suction cylinder 28, so as to mix it with the waste hot water passing through the cavity seat 6, thereby preventing scale from depositing and condensing in the surrounding spring tube 5, affecting the subsequent heat conduction and warming effect, effectively cleaning the water quality, extending the service life and use effect of the spring tube 5, and ensuring overall stable operation.

[0039] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0040] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A monitoring and control device for dual-source supply of marine LNG fuel and diesel, comprising a fixed seat (1), a delivery pump (2) and a diesel fuel tank (4) fixed at the top of the fixed seat (1), and a bourdon tube (5) wound and fixed outside the diesel fuel tank (4), characterized in that: On one side of the top of the fixed seat (1), an LNG fuel tank (38) is installed. On the top of the diesel fuel tank (4), a cavity seat (6) is fixedly installed through a bracket. On both sides of the cavity seat (6), an inlet pipe (7) and an outlet pipe (8) are arranged in a staggered and symmetrical conduction manner. Inside one side of the inlet pipe (7), a monitoring and control component is arranged. Inside the cavity seat (6), a hollow copper rod (19) is longitudinally and rotationally and sealingly installed. The bottom end of the hollow copper rod (19) is rotationally and sealingly installed inside one side of the diesel fuel tank (4). Outside the rotationally penetrating end at the top of the hollow copper rod (19), a disc (21) is fixedly installed. On the top of the disc (21), a pour point depressant injection component and a scale inhibitor injection component are arranged; The monitoring and control component includes a control valve (9) and an alloy memory spring (15). The control valve (9) is fixedly installed through the side inside of the inlet pipe (7). The alloy memory spring (15) is horizontally placed outside the top side of the inlet pipe (7) close to the control valve (9).

2. The monitoring and control device for dual-source supply of marine LNG fuel and diesel according to claim 1, characterized in that: Between the input end of the transfer pump (2) and the inside of one side at the bottom of the diesel fuel tank (4), a transfer pipe (3) is fixedly installed in a conduction manner. The output end of the outlet pipe (8) is fixedly connected in a conduction manner to the input end of the bellows pipe (5). The output end of the bellows pipe (5) is fixedly connected in a conduction manner to a discharge pipe (16).

3. The monitoring and control device for dual-source supply of marine LNG fuel and diesel according to claim 1, characterized in that: Outside the top side of the inlet pipe (7) close to the alloy memory spring (15), a limit block (11) is fixedly installed. Inside the top of the limit block (11), a limit chute (12) is embedded. Inside the limit chute (12), a sliding seat (14) is slidably engaged and installed. Inside one side of the limit chute (12), a rack (13) is slidably installed through.

4. The monitoring and control device for dual-source supply of marine LNG fuel and diesel according to claim 3, characterized in that: One end of the rack (13) is fixedly installed with the one end of the sliding seat (14). On the top of the valve stem of the control valve (9), a gear (10) is fixedly installed. One side of the gear (10) is meshed and connected with one side of the rack (13). The two ends of the alloy memory spring (15) are respectively installed on one side of the sliding seat (14) and the inner wall of the limit chute (12).

5. The monitoring and control device for dual-source supply of marine LNG fuel and diesel according to claim 1, characterized in that: On both sides of the top of the fixed seat (1), a liquid storage tank one (17) and a liquid storage tank two (18) are fixedly installed. At the edge of one side of the top of the disc (21), a limit post (22) is fixedly installed. Outside the limit post (22), a limit frame (23) is arranged. Inside the limit frame (23), a limit groove (24) is arranged through. The limit post (22) and the limit groove (24) are in a through and sliding connection.

6. The monitoring and control device for dual-source supply of marine LNG fuel and diesel according to claim 5, characterized in that: The pour point depressant injection component includes a piston rod one (25) and a suction cylinder one (27). The piston rod one (25) is horizontally and slidably installed through the top side of the cavity seat (6) through a bracket. The suction cylinder one (27) is fixedly installed through a bracket on the top side of the cavity seat (6) close to the piston rod one (25). One end of the piston rod one (25) is fixedly installed at the middle position of the outside of one side of the limit frame (23). The piston end of the piston rod one (25) is slidably and sealingly installed inside one side of the suction cylinder one (27).

7. The monitoring and control device for dual-source supply of marine LNG fuel and diesel according to claim 6, characterized in that: On the inner side of the side of the suction cylinder one (27) away from the limit frame (23), a one-way liquid inlet valve pipe one (29) and a one-way liquid discharge valve pipe one (30) are fixedly installed through. The input end of the one-way liquid inlet valve pipe one (29) is fixedly installed through the inner side of the bottom end of the liquid storage tank one (17). The output end of the one-way liquid discharge valve pipe one (30) is conductively fixedly installed with a sealing rotating sleeve (32). The outer part of the output end of the one-way liquid discharge valve pipe one (30) is fixedly penetrated with a mounting seat (31). One end of the mounting seat (31) is fixedly installed on the outer side of the bottom end of the cavity seat (6).

8. The monitoring and control device for dual-source supply of marine LNG fuel and diesel according to claim 7, characterized in that: The sealing rotating sleeve (32) is installed through and rotationally sealed on the outer side of one side of the hollow copper rod (19). A plurality of liquid inlet holes (33) are arranged around the inner side of the hollow copper rod (19) near the sealing rotating sleeve (32) at equal angles.

9. The monitoring and control device for dual-source supply of marine LNG fuel and diesel according to claim 1, characterized in that: On the outer side of the hollow copper rod (19) located inside the diesel fuel tank (4), a plurality of copper stirring rods (34) are fixedly installed obliquely at equal angles. On the outer side of one side of the plurality of copper stirring rods (34), a spray head pipe (35) is fixedly installed. The input ends of the spray head pipes (35) are fixedly installed through the inner side of one side of the hollow copper rod (19).

10. The monitoring and control device for dual-source supply of marine LNG fuel and diesel according to claim 6, characterized in that: The scale inhibitor injection assembly includes a piston rod two (26) and a suction cylinder two (28). The piston rod two (26) is horizontally installed through and slidably on the outer side of the top end of the cavity seat (6) away from the piston rod one (25) through a bracket. The suction cylinder two (28) is fixedly installed on the outer side of the top end of the cavity seat (6) near the piston rod two (26) through a bracket. One end of the piston rod two (26) is fixedly installed at the middle position of the outer side of one side of the limit frame (23). The piston end of the piston rod two (26) is slidably and sealingly installed on the inner side of one side of the suction cylinder one (27). On the inner side of the side of the suction cylinder two (28) away from the limit frame (23), a one-way liquid inlet valve pipe two (36) and a one-way liquid discharge valve pipe two (37) are fixedly installed through. The input end of the one-way liquid inlet valve pipe two (36) is fixedly installed through the inner side of the bottom end of the liquid storage tank two (18). The output end of the one-way liquid discharge valve pipe two (37) is conductively fixedly installed on the inner side of the top end of the cavity seat (6).

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