Ship fuel oil tank anti-overflow ventilation system

Abstract

The invention relates to the technical field of anti-overflow ventilation systems, and provides an anti-overflow ventilation system for a ship fuel oil tank, a tank body matched with the anti-overflow ventilation system for the ship fuel oil tank forms ventilation and anti-overflow, meanwhile, external substance inrush can be effectively reduced, the ventilation and anti-overflow state retainability is good, and the anti-overflow ventilation system is more practical and comprises a tank body provided with a ventilation opening. The device further comprises an anti-overflow structure, a ventilation structure and a control system, the anti-overflow structure comprises a mounting cylinder, an external expansion cylinder is fixedly connected to the top end of the mounting cylinder and communicates with the mounting cylinder, a plurality of conical rings and a plurality of conical caps are fixedly connected into the external expansion cylinder, the ventilation structure comprises a cap cylinder, and the external expansion cylinder is sleeved with the cap cylinder; a spherical cap is fixedly connected to the top end of the cap barrel, a conical spring is fixedly connected into the cap barrel, the inner side of the conical spring is fixedly connected with an external expansion barrel, an inertia scraping assembly is installed on the external expansion barrel and located in the cap barrel, and an inertia counterweight assembly used for inertia driving of the inertia scraping assembly is installed in the external expansion barrel.

Description

Technical Field

[0001] The invention relates to the technical field of overflow prevention and ventilation systems, and in particular to an overflow prevention and ventilation system for a ship fuel tank. Background Art

[0002] As we all know, the ship fuel tank anti-overflow venting system is an auxiliary device that matches the fuel tank to balance the pressure inside the tank and prevent fuel from overflowing. It is a key safety device in the ship's fuel system.

[0003] After searching, the Chinese patent application number CN201410157591.3 discloses a hull fuel tank overflow prevention device, which is roughly described as follows: the fuel tank includes: an air vent and a tank body, and the fuel tank overflow prevention device includes: a buffer, the buffer is configured as a hollow cylinder, the buffer is connected to the air vent, a plurality of baffles are arranged on the inner surface of the buffer and the buffer is unobstructed, and when in use, the design of the buffer and the baffle makes it difficult for fuel to leak out of the air vent when the ship pitches and rolls.

[0004] Although the above-mentioned existing technical solution can achieve cabin ventilation while reducing the leakage of fuel in the cabin during the cabin pitch and roll, the top shielding is achieved by a ventilation head, and there is little explanation on the specific structure of the ventilation head. Therefore, during the ventilation process, how to ensure ventilation and overflow prevention while reducing the entry of foreign matter is the key to maintaining smooth ventilation and preventing fuel overflow. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a ship fuel tank anti-overflow ventilation system, which can effectively reduce the influx of foreign matter while forming ventilation and anti-overflow properties in the fuel tank body, and is more practical.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-overflow ventilation system for a ship fuel tank, comprising a tank body provided with a ventilation port, and also comprising an anti-overflow structure, a ventilation structure and a control system, wherein the anti-overflow structure comprises a mounting cylinder, the top end of which is fixedly connected to an outer expansion cylinder, the outer expansion cylinder and the mounting cylinder are interconnected, a plurality of conical rings and a plurality of conical caps are fixedly connected inside the outer expansion cylinder, the ventilation structure comprises a cap cylinder, the cap cylinder is sleeved outside the outer expansion cylinder, a spherical cap is fixedly connected to the top end of the cap cylinder, a conical spring is fixedly connected inside the cap cylinder, The inner side of the conical spring is fixedly connected to the outer expansion tube, an inertial scraping assembly is installed on the outer expansion tube, and the inertial scraping assembly is located inside the hat tube, an inertial counterweight assembly for inertial driving of the inertial scraping assembly is installed in the outer expansion tube, the control system includes a central controller and a mounting ring, the mounting ring is fixedly connected to the outside of the mounting tube, a plurality of mounting cavities are arranged in the mounting ring, electromagnets are installed in the plurality of mounting cavities, the electromagnets are electrically connected to the central controller, a plurality of the electromagnets are equipped with iron rings, and the iron rings are fixedly connected to the bottom end of the hat tube.

[0007] Preferably, the inertial scraping assembly includes a middle bracket and a spiral plate, the middle bracket is fixedly connected in the outer expansion tube, a top transmission connecting plate is rotatably connected in the middle bracket, the spiral plate is fixedly connected to the top transmission connecting plate, and the inner circle of the spiral plate contacts the outer side wall of the outer expansion tube, and the outer circle of the spiral plate contacts the inner side wall of the cap tube.

[0008] Preferably, the inertial counterweight assembly includes a counterweight ring, a threaded rod and three connecting sleeves, the counterweight ring is arranged in the outer expansion tube, the three connecting sleeves are rotatably connected in the outer expansion tube, and the three connecting sleeves are slidably connected with a driving rod and a driven rod, the two driving rods are hinged to the counterweight ring, the two driven rods are connected to the threaded rod, and the threaded rod is slidably connected to the middle bracket, the threaded rod is threadedly connected to the top transmission connecting plate, the three driving rods are fixedly connected with a middle connecting spring, and the three middle connecting springs are respectively fixedly connected to the three driven rods.

[0009] Preferably, the bottom end of the threaded rod is rotatably connected to a hinge frame, the hinge frame is provided with three hinge holes, hinge rods are fixedly connected in the three hinge holes, and the three driven rods are provided with round holes matching the hinge rods.

[0010] Preferably, the top transmission connecting plate is provided with a plurality of air holes, and the plurality of air holes are distributed in a circular shape at equal angles.

[0011] Preferably, a contact sealing ring is fixedly connected inside the spherical cap, and the bottom annular surface of the contact sealing ring matches the top transmission connecting plate.

[0012] Preferably, a connecting ring is provided at the connection between the outer expansion tube and the mounting tube, and the connecting ring adopts a gradual horn structure with a low inner ring surface and a high outer ring surface.

[0013] Preferably, the plurality of conical rings are alternately arranged with the plurality of conical caps at intervals in height, and the inner diameter of the conical ring is smaller than the outer diameter of the conical cap.

[0014] Compared with the prior art, the present invention provides a ship fuel tank overflow prevention and ventilation system, which has the following beneficial effects:

[0015] (1) In the present invention, through the design of the overflow prevention structure, the supporting cabin body forms a breathable and overflow prevention structure, forming a basic cabin body fuel tank overflow prevention and breathable functional structure.

[0016] (2) In the present invention, the design of the air-permeable structure cooperates with the outer expansion tube to form a top protection, which ensures that the gas passage between the outer expansion tube and the cap tube is formed and can effectively reduce the influx of foreign matter. The air-permeable and anti-overflow state is well maintained, and the opening and closing control and cleaning of the gas passage between the outer expansion tube and the cap tube can be formed according to the shaking of the cabin on the water.

[0017] (3) In the present invention, by configuring a control system, the position of the matching cap tube relative to the outer expansion tube is controlled, so as to realize the opening and closing control of the ventilation channel between the cap tube and the outer expansion tube, facilitate the control of the access and stop of the overflow prevention structure and the breathable structure, and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0019] Figure 2 It is a partially cutaway three-dimensional structural schematic diagram of the mounting tube, the outer expansion tube and the spherical cap of the present invention;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the support, spiral plate and top transmission connecting plate in the present invention;

[0021] Figure 4 It is a schematic diagram of a partially cutaway three-dimensional structure of the outer expansion tube, the conical cap and the middle bracket of the present invention;

[0022] Figure 5 For the present invention Figure 4 A schematic diagram of the local enlarged structure at point A in the middle;

[0023] Figure 6 It is a schematic diagram of a partially cutaway three-dimensional structure of the outer expansion tube, the conical ring and the conical cap of the present invention;

[0024] Figure 7It is a schematic diagram of the exploded three-dimensional structure of the counterweight ring, the connecting sleeve and the driving rod of the present invention;

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the driving rod, the driven rod and the intermediate connecting spring of the present invention.

[0026] In the figure: 1. cabin; 2. mounting tube; 3. outward expansion tube; 4. conical ring; 5. conical cap; 6. cap tube; 7. spherical cap; 8. conical spring; 9. central controller; 10. mounting ring; 11. electromagnet; 12. iron ring; 13. middle bracket; 14. spiral plate; 15. top transmission connecting plate; 16. counterweight ring; 17. threaded rod; 18. connecting sleeve; 19. driving rod; 20. driven rod; 21. middle connecting spring; 22. articulated frame; 23. articulated hole; 24. articulated rod; 25. vent hole; 26. contact sealing ring; 27. connecting ring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example

[0029] See also Figure 1-Figure 8A ship fuel tank overflow prevention and ventilation system comprises a tank body 1 provided with a ventilation port, and also comprises an overflow prevention structure, a ventilation structure and a control system. The overflow prevention structure comprises a mounting tube 2, the top end of the mounting tube 2 is fixedly connected with an outer expansion tube 3, a connecting ring 27 is arranged at the connection between the outer expansion tube 3 and the mounting tube 2, the connecting ring 27 adopts a gradual horn structure with a low inner ring surface and a high outer ring surface, the outer expansion tube 3 and the mounting tube 2 are connected to each other, a plurality of conical rings 4 and a plurality of conical caps 5 are fixedly connected in the outer expansion tube 3, the plurality of conical rings 4 are alternately arranged with a plurality of conical caps 5 at intervals in height, and the inner diameter of the conical ring 4 is smaller than the outer diameter of the conical cap 5, through the design of the overflow prevention structure, the matching tank body 1 forms a ventilation and overflow prevention structure, forming a basic fuel tank overflow prevention and control system in the tank body 1. The breathable functional structure includes a cap barrel 6, which is sleeved on the outside of the outer expansion barrel 3. A spherical cap 7 is fixedly connected to the top of the cap barrel 6. A conical spring 8 is fixedly connected inside the cap barrel 6. The inner side of the conical spring 8 is fixedly connected to the outer expansion barrel 3. An inertial scraping assembly is installed on the outer expansion barrel 3, and the inertial scraping assembly is located inside the cap barrel 6. An inertial counterweight assembly for inertial driving of the inertial scraping assembly is installed in the outer expansion barrel 3. The inertial scraping assembly includes a middle bracket 13 and a spiral plate 14. The middle bracket 13 is fixedly connected to the outer expansion barrel 3. A top transmission connecting plate 15 is rotatably connected to the middle bracket 13. The spiral plate 14 is fixedly connected to the top transmission connecting plate 15, and the inner circle of the spiral plate 14 contacts the outer side wall of the outer expansion barrel 3, and the outer circle of the spiral plate 14 contacts the inner side wall of the cap barrel 6.

[0030] It should be further explained that the inertial counterweight assembly includes a counterweight ring 16, a threaded rod 17 and three connecting sleeves 18. The counterweight ring 16 is arranged in the outer expansion tube 3. The three connecting sleeves 18 are rotatably connected in the outer expansion tube 3. The three connecting sleeves 18 are slidably connected with a driving rod 19 and a driven rod 20. The two driving rods 19 are hinged to the counterweight ring 16, and the two driven rods 20 are connected to the threaded rod 17. The threaded rod 17 is slidably connected to the middle bracket 13, and the threaded rod 17 is threadedly connected to the top transmission connecting plate 15. Each driving rod 19 is fixedly connected with a middle connecting spring 21, and the three middle connecting springs 21 are fixedly connected with the three driven rods 20 respectively. The bottom end of the threaded rod 17 is rotatably connected with a hinge frame 22, and the hinge frame 22 is provided with three hinge holes 23, and the three hinge holes 23 are fixedly connected with hinge rods 24. The three driven rods 20 are provided with round holes matching the hinge rods 24. The top transmission connecting plate 15 is provided with a plurality of air holes 25, and the plurality of air holes 25 are distributed at equal angles in a ring shape. The spherical cap 7 is fixedly connected with a contact The sealing ring 26, the bottom ring surface of the contact sealing ring 26 matches the top transmission connecting plate 15, and the top protection is formed in cooperation with the outer expansion tube 3 through the design of the air-permeable structure, so as to ensure that the gas passage between the outer expansion tube 3 and the cap tube 6 is formed, and at the same time, the influx of external substances can be effectively reduced, and the air permeability and overflow prevention state are well maintained, and the gas passage between the outer expansion tube 3 and the cap tube 6 can be opened and closed and cleaned according to the shaking of the cabin 1 on the water. The control system includes a central controller 9 and a mounting ring 10, and the mounting ring 10 is fixedly connected to the outside of the mounting tube 2, and a plurality of mounting cavities are arranged in the mounting ring 10, and electromagnets 11 are installed in the plurality of mounting cavities, and the electromagnets 11 are electrically connected to the central controller 9, and the plurality of electromagnets 11 are equipped with iron rings 12, and the iron rings 12 are fixedly connected to the bottom end of the cap tube 6. Through the configuration of the control system, the matching cap tube 6 forms a position control relative to the outer expansion tube 3, so as to realize the opening and closing control of the ventilation channel between the cap tube 6 and the outer expansion tube 3, and facilitate the control of the access and stop use of the overflow prevention structure and the air-permeable structure, which is more practical.

[0031] The central controller 9 and the electromagnet 11 in this embodiment are conventional devices purchased on the market and known to those skilled in the art. In the present invention, we only use them without improving their structures and functions. For those skilled in the art, their setting methods, installation methods and electrical connection methods only need to be debugged and operated according to the requirements of their instruction manuals, and will not be described in detail here.

[0032] In summary, the working principle of the ship fuel tank anti-overflow ventilation system is that before use, the ship fuel tank anti-overflow ventilation system is first installed, and the installation content includes relative installation of the installation tube 2 relative to the ventilation port of the cabin body 1 and electrical connection of the electromagnet 11 with the central controller 9. After the electrical connection, the magnetic control of the electromagnet 11 can be controlled by the central controller 9. When the electromagnet 11 is energized to generate a magnetic field, it will generate a magnetic attraction to the iron ring 12. Under the action of the magnetic attraction, the cap tube 6 will overcome the elastic force of the conical spring 8 and move downward relative to the outer expansion tube 3. When the cap tube 6 forms a relative position with respect to the outer expansion tube 3, the cap tube 6 will move downward relative to the outer expansion tube 3. After the position is lowered, the contact sealing ring 26 will be in close contact with the top transmission connecting plate 15, so that the gas channel between the cap barrel 6 and the outer expansion barrel 3 is closed, and the anti-overflow ventilation system of the ship's fuel tank is suspended. When the central controller 9 controls the current in the electromagnet 11 to be disconnected, the electromagnetic field disappears. Under the elastic reset action of the conical spring 8, the cap barrel 6 will rise and reset relative to the outer expansion barrel 3, and then the gas channel between the outer expansion barrel 3 and the cap barrel 6 will be restored. In the daily operation process, when the cabin body 1 shakes up and down with the fluctuation of the water surface, the counterweight ring 16 will form itself relative to The relative position of the outer expansion tube 3 changes, that is, when the cabin 1 shakes upward with the fluctuation of the water surface, due to the inertia of the counterweight ring 16, it will be relatively close to the shaking cabin 1, that is, the counterweight ring 16 will be relatively lowered relative to the outer expansion tube 3. In this process, under the transmission action of the driving rod 19 and the driven rod 20, the hinge frame 22 will be relatively raised relative to the outer expansion tube 3, thereby realizing the position change of the threaded rod 17 relative to the top transmission connecting plate 15, and then achieving the rotation drive of the top transmission connecting plate 15 relative to the middle bracket 13, and finally forming the rotation drive of the spiral plate 14 to the outer expansion tube 3 and the cap The gap space between the cylinders 6 is formed to assist in cleaning, and since the cabin body 1 shakes up and down with the fluctuation of the water surface, the threaded rod 17 will realize alternating reciprocating relative upward and relative downward movement. Therefore, when the cabin body 1 shakes up and down with the fluctuation of the water surface, the spiral plate 14 will realize reciprocating forward and reverse bidirectional rotation. On the basis of assisting in cleaning the gap space between the external expansion cylinder 3 and the cap cylinder 6, the gap space between the external expansion cylinder 3 and the cap cylinder 6 can also be actively driven to form air, so as to increase the air flowability in the gap space between the external expansion cylinder 3 and the cap cylinder 6, and assist in improving the active ventilation effect in the external expansion cylinder 3.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ship fuel tank overflow prevention and ventilation system, comprising a tank body (1) provided with a ventilation port, characterized in that: The invention also comprises an anti-overflow structure, a ventilating structure and a control system. The anti-overflow structure comprises a mounting tube (2). The top end of the mounting tube (2) is fixedly connected to an outer expansion tube (3). The outer expansion tube (3) and the mounting tube (2) are in communication with each other. A plurality of conical rings (4) and a plurality of conical caps (5) are fixedly connected inside the outer expansion tube (3). The ventilating structure comprises a cap tube (6). The cap tube (6) is sleeved outside the outer expansion tube (3). The top end of the cap tube (6) is fixedly connected to a spherical cap (7). A conical spring (8) is fixedly connected inside the cap tube (6). The inner side of the conical spring (8) is fixedly connected to the outer expansion tube (3). The outer expansion tube (3) is fixedly connected to the outer expansion tube (3). An inertial scraping assembly is installed on the cap tube (6), and the inertial scraping assembly is located inside the cap tube (6). An inertial counterweight assembly for inertial driving of the inertial scraping assembly is installed inside the outer expansion tube (3). The control system comprises a central controller (9) and a mounting ring (10). The mounting ring (10) is fixedly connected to the outside of the mounting tube (2). A plurality of mounting cavities are arranged inside the mounting ring (10). Electromagnets (11) are installed in the plurality of mounting cavities. The electromagnets (11) are electrically connected to the central controller (9). The plurality of electromagnets (11) are matched with iron rings (12). The iron rings (12) are fixedly connected to the bottom end of the cap tube (6).

2. A ship fuel tank anti-overflow venting system according to claim 1, characterized in that: The inertial scraping assembly comprises a middle bracket (13) and a spiral plate (14), wherein the middle bracket (13) is fixedly connected inside the outer expansion tube (3), a top transmission connecting plate (15) is rotatably connected inside the middle bracket (13), the spiral plate (14) is fixedly connected to the top transmission connecting plate (15), and the inner ring of the spiral plate (14) contacts the outer side wall of the outer expansion tube (3), and the outer ring of the spiral plate (14) contacts the inner side wall of the cap tube (6).

3. A ship fuel tank anti-overflow venting system according to claim 2, characterized in that: The inertial counterweight assembly comprises a counterweight ring (16), a threaded rod (17) and three connecting sleeves (18); the counterweight ring (16) is arranged in the outer expansion tube (3); the three connecting sleeves (18) are all rotatably connected in the outer expansion tube (3); the three connecting sleeves (18) are all slidably connected with a driving rod (19) and a driven rod (20); the two driving rods (19) are hinged to the counterweight ring (16); the two driven rods (20) are connected to the threaded rod (17); the threaded rod (17) is slidably connected to the middle bracket (13); the threaded rod (17) is threadedly connected to the top transmission connecting plate (15); the three driving rods (19) are all fixedly connected with a middle connecting spring (21); and the three middle connecting springs (21) are respectively fixedly connected to the three driven rods (20).

4. A ship fuel tank anti-overflow venting system according to claim 3, characterized in that: The bottom end of the threaded rod (17) is rotatably connected to an articulated frame (22), the articulated frame (22) is provided with three articulated holes (23), the three articulated holes (23) are all fixedly connected to an articulated rod (24), and the three driven rods (20) are all provided with a circular hole matching the articulated rod (24).

5. A ship fuel tank overflow prevention and ventilation system according to claim 4, characterized in that: The top transmission connecting plate (15) is provided with a plurality of air holes (25), and the plurality of air holes (25) are distributed in a circular shape at equal angles.

6. A ship fuel tank anti-overflow venting system according to claim 5, characterized in that: A contact sealing ring (26) is fixedly connected inside the spherical cap (7), and the bottom ring surface of the contact sealing ring (26) matches the top transmission connecting plate (15).

7. A ship fuel tank anti-overflow venting system according to claim 6, characterized in that: A connecting ring (27) is provided at the connection between the outer expansion tube (3) and the mounting tube (2), and the connecting ring (27) adopts a gradual horn structure with a low inner ring surface and a high outer ring surface.

8. A ship fuel tank overflow prevention and ventilation system according to claim 7, characterized in that: The plurality of conical rings (4) are respectively and alternately arranged with the plurality of conical caps (5) at intervals in height, and the inner diameter of the conical ring (4) is smaller than the outer diameter of the conical cap (5).

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