Ballast tank double-vent pipe and ballast tank

Abstract

The utility model discloses a ballast tank double vent pipe and a ballast tank, and belongs to the technical field of ballast tanks, the double vent pipe comprises a main vent pipe and an auxiliary vent pipe; one end of the main vent pipe is arranged on a top deck of the side ballast tank and communicated with external atmosphere, and the other end of the main vent pipe transversely extends to the inner edge of the ballast tank and is spaced from a bottom deck; one end of the auxiliary vent pipe is connected to the main vent pipe, the other end of the auxiliary vent pipe transversely extends to the edge of the ballast tank, and the distance between the auxiliary vent pipe and the bottom deck is smaller than that between the main vent pipe and the bottom deck; the vertical height of the joint of the auxiliary vent pipe and the main vent pipe is larger than the vertical height of the end, close to the bottom deck, of the auxiliary vent pipe. By arranging the auxiliary vent pipe, when ballast water in the ballast tank is higher than the main vent pipe, it can be guaranteed that gas at the top can be discharged through the auxiliary vent pipe, the double vent pipe not only reduces the cavitation space of the ballast tank to the maximum extent, but also achieves the full tank liquid level of the ballast tank, and it is guaranteed that the stowage and loading capacity of the ballast tank is maximized.

Description

Technical Field

[0001] The utility model relates to the technical field of ballast tanks, in particular to a ballast tank double air permeable pipe and a ballast tank. Background Art

[0002] A ship is equipped with a certain number of ballast tanks for loading. When the ballast tank is filled with ballast water and discharged, the air in the tank needs to be discharged and sucked in through the vent pipe to keep the pressure in the tank within the design range. In order to avoid the problem of air pockets causing the ballast tank to not be filled with ballast water, the vent pipe needs to be set at the highest point;

[0003] When it is inconvenient to install a vent pipe directly above the vent position of the ballast water tank, it is usually necessary to lead the vent pipe horizontally to a position that is convenient for high-point ventilation. However, due to the cabin structure, the horizontal pipeline of the vent pipe often cannot be very close to the tank top, which can easily cause large air pockets in the ballast tank. Especially for ships with large bottom ballast tanks, such as launching work ships, floating docks, semi-submersible transport ships, etc., large air pockets will cause the ballast tank to be unable to reach the full tank liquid level, and the loading state and loading capacity will be limited. Utility Model Content

[0004] The utility model provides a ballast tank double air permeable pipe and a ballast tank to overcome the above problems.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A ballast tank double vent pipe, comprising a main vent pipe and an auxiliary vent pipe;

[0007] One end of the main air vent pipe is arranged on the top deck of the side ballast tank and communicates with the outside atmosphere, and the other end extends transversely to the inner edge of the ballast tank and is spaced apart from the bottom deck;

[0008] One end of the auxiliary air pipe is connected to the main air pipe, and the other end extends laterally to the edge of the ballast tank. The distance between the auxiliary air pipe and the bottom deck is smaller than the distance between the main air pipe and the bottom deck. The vertical height of the connection between the auxiliary air pipe and the main air pipe is higher than the vertical height of the end of the auxiliary air pipe close to the bottom deck.

[0009] Furthermore, the main ventilation pipe includes a vertically arranged riser and a horizontally arranged cross pipe;

[0010] The top of the vertical pipe is arranged on the top deck of the side ballast tank and is connected to the atmosphere outside the ballast tank. One end of the horizontal pipe is connected to the bottom of the vertical pipe, and the other end of the horizontal pipe is arranged at the corner of the ballast tank.

[0011] Further, the auxiliary vent pipe includes a first pipe section and a second pipe section connected to the first pipe section; one end of the first pipe section away from the second pipe section is connected to the riser of the main vent pipe, and one end of the second pipe section away from the first pipe section is close to the lower side of the bottom deck and is arranged at the corner of the ballast tank;

[0012] The vertical heights of the first pipe section and the second pipe section are both higher than the vertical height of the horizontal pipe;

[0013] The vertical height of the port of the second pipe section away from the first pipe section is smaller than the vertical height of the connection between the first pipe section and the riser.

[0014] Furthermore, the side of the second pipe segment away from the first pipe segment is connected to a third pipe segment with its port facing upward, the height of the pipe mouth of the third pipe segment is higher than the height of the ballast water in the ballast tank when the ship has a maximum tilt angle, and the tilt direction of the maximum tilt angle is opposite to the direction of the setting position of the third pipe segment in the ballast tank.

[0015] Furthermore, the inner diameter of the auxiliary air pipe is smaller than the inner diameter of the main air pipe.

[0016] A ballast tank provided with the ballast tank double air pipe, the ballast tank comprising a left ballast tank, a middle ballast tank and a right ballast tank which are arranged adjacently; a single air pipe and a double air pipe formed by a main air pipe and an auxiliary air pipe are arranged in the left ballast tank and the right ballast tank, the single air pipe and the double air pipe are arranged at diagonal positions in the ballast tank respectively; the top of the single air pipe is arranged on the top deck and communicated with the external atmosphere, and the bottom of the single air pipe is arranged above the left ballast tank and the right ballast tank;

[0017] At least two double air permeable pipes are arranged at diagonal positions in the middle ballast tank.

[0018] Furthermore, an air pipe head is provided at one end of the single air permeable pipe and the standpipe away from the ballast tank.

[0019] The beneficial effects of the utility model are:

[0020] A double vent pipe for a ballast tank disclosed in the utility model can, by means of an auxiliary vent pipe, ensure that when the ballast water in the ballast tank is higher than the main vent pipe, the top gas can be discharged through the auxiliary vent pipe. The double vent pipe for the ballast tank not only reduces the air pocket space in the ballast tank to the greatest extent, but also realizes the full tank liquid level of the ballast tank, thereby ensuring the maximization of the ballast tank stowage and loading capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a front cross-sectional view of a ballast tank with double air-permeable pipes disclosed in an embodiment of the utility model;

[0023] Figure 2 It is a front cross-sectional view of the rear section of a ballast tank with double air-permeable pipes disclosed in an embodiment of the utility model;

[0024] Figure 3 for Figure 1 A magnified view of part A;

[0025] Figure 4 It is a schematic diagram of the top structure of a ballast tank provided with double air permeable pipes disclosed in an embodiment of the utility model.

[0026] In the figure:

[0027] 1. Main vent pipe; 11. Vertical pipe; 12. Horizontal pipe;

[0028] 2. Auxiliary vent pipe; 21. First pipe section; 22. Second pipe section; 23. Third pipe section;

[0029] 3. Top deck;

[0030] 4. Bottom deck;

[0031] 5. Left ballast tank;

[0032] 6. Intermediate ballast tank;

[0033] 7. Right ballast tank;

[0034] 8. Air pipe head;

[0035] 9. Single air vent. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] Example 1

[0038] like Figure 1-3 The figure shows a ballast tank double air pipe provided in this embodiment, comprising a main air pipe 1 and an auxiliary air pipe 2;

[0039] One end of the main vent pipe 1 is arranged on the top deck 3 of the side ballast tank and communicates with the outside atmosphere, and the other end extends transversely to the inner edge of the ballast tank and is spaced apart from the bottom deck 4;

[0040] One end of the auxiliary air pipe 2 is connected to the main air pipe 1, and the other end extends horizontally to the edge of the ballast tank. The distance between the auxiliary air pipe 2 and the bottom deck 4 is smaller than the distance between the main air pipe 1 and the bottom deck 4; the vertical height of the connection between the auxiliary air pipe 2 and the main air pipe 1 is higher than the vertical height of the end of the auxiliary air pipe 2 close to the bottom deck 4.

[0041] The distance between the auxiliary air pipe 2 and the bottom deck 4 is set to be smaller than the distance between the main air pipe 1 and the bottom deck 4, that is, the vertical height of the auxiliary air pipe 2 is higher than the vertical height of the transverse extension section of the main air pipe 1, so that the auxiliary air pipe 2 is as close to the top deck 3 as possible, and the air cavity space of the ballast tank is minimized to the greatest extent, thereby ensuring that the air in the ballast tank can be discharged to the greatest extent; when the ballast water level in the ballast tank is lower than the height of the transverse extension section (transverse pipe 12) of the main air pipe 1, ventilation in the ballast tank is achieved through the main air pipe 1, and when the water level is higher than the height of the transverse pipe 12 of the main air pipe 1, as the water level continues to rise and submerges the main air pipe 1, the gas in the ballast tank is discharged through the auxiliary air pipe 2 is then discharged out of the ballast tank through the main vent pipe 1 (riser pipe 11), and because the vertical height of the connection between the auxiliary vent pipe 2 and the main vent pipe 1 is higher than the vertical height of the auxiliary vent pipe 2 near the bottom deck 4, the ballast water that has entered the main vent pipe 1 in this process will not enter the auxiliary vent pipe 2 through the connection between the auxiliary vent pipe 2 and the main vent pipe 1, so it will not affect the ventilation function of the auxiliary vent pipe 2, so the gas in the tank can still be discharged through the auxiliary vent pipe 2 to complete the full tank filling of the ballast tank; the auxiliary vent pipe 2 is arranged to cooperate with the main vent pipe 1, which effectively avoids the problem of failure to achieve full tank liquid level (deflation) of the ballast tank due to failure to achieve effective ventilation in the ballast tank.

[0042] The utility model discloses a double vent pipe for a ballast tank. By setting an auxiliary vent pipe, when the ballast water in the ballast tank is higher than the main vent pipe, the top gas can be discharged through the auxiliary vent pipe. The double vent pipe for the ballast tank not only reduces the air pocket space in the ballast tank to the greatest extent, but also realizes the full tank liquid level of the ballast tank, thereby ensuring the maximization of the ballast tank stowage and loading capacity.

[0043] In a specific embodiment, the main ventilation pipe 1 includes a vertically arranged standpipe 11 and a horizontally arranged cross pipe 12;

[0044] The top of the vertical pipe 11 is arranged on the top deck 3 of the side ballast tank and communicates with the atmosphere outside the ballast tank. One end of the horizontal pipe 12 is communicated with the bottom of the vertical pipe 11, and the other end of the horizontal pipe 12 is arranged at the corner of the ballast tank. Before the ballast water rises to the height of the horizontal pipe 12, the main ventilation pipe is the main pipeline for ventilation. Figure 1 As shown, a double vent pipe is provided on the left side of the right ballast tank 7, and a single vent pipe 9 is provided on the right side. When the hull is in an inclined state, the hull tilting to the right is taken as an example for explanation. Since the other end of the transverse pipe 12 of the double vent pipe in the right ballast tank 7 (away from the end connected to the riser 11) is arranged at the corner of the ballast tank, it can ensure that the gas on the upper side of the ballast water can still enter the transverse pipe 12 and then be discharged to the outside of the ballast tank through the riser 11 (main vent pipe 1), so as to keep the pressure in the tank within the design range. When the hull tilts to the left, the gas can directly pass through the transverse pipe 12. Figure 2 The single air permeable pipe 9 in the middle right ballast tank 7 is directly discharged.

[0045] In a specific embodiment, the auxiliary air vent 2 includes a first pipe section 21 and a second pipe section 22 connected to the first pipe section 21; one end of the first pipe section 21 away from the second pipe section 22 is connected to the riser 11 of the main air vent 1, and one end of the second pipe section 22 away from the first pipe section 21 is close to the lower side of the bottom deck 4 and is arranged at the corner of the ballast tank. The end of the second pipe section 22 is arranged at the corner of the ballast tank, so when the hull tilts during navigation, the influence of the tilt direction on the ballast tank can be minimized. The height of the air pocket on the opposite side is reduced to minimize the influence of the air pocket on the ballast water introduction. Here, taking the case where the hull tilts to the right as an example, since the left front side of the right ballast tank 7 is provided with an auxiliary air vent 2, when the ballast water in the hull tilts to the right with the hull, the air on the left side of the ballast tank can be discharged out of the tank through the auxiliary air vent 2, reducing the height of the air pocket on the left side, minimizing the influence of the air pocket on the ballast water introduction, improving the loading capacity of the ballast tank and the accuracy of the calculation of the loading condition, and finally achieving full loading of the ballast tank;

[0046] The vertical heights of the first pipe section 21 and the second pipe section 22 are both higher than the vertical height of the transverse pipe 12; so as to ensure that the auxiliary vent pipe 2 is arranged at a high position in the ballast tank. When the main vent pipe 1 cannot be close to the tank top due to the ship chamber structure, the auxiliary vent pipe 2 and its position setting can reduce the air pocket height, ensure that the gas above the ballast water is discharged to the maximum extent, effectively solve the problem that the ballast tank cannot be filled with ballast water due to the low arrangement position of the main vent pipe 1, and increase the loading capacity of the ballast tank;

[0047] The vertical height of the port of the second pipe section 22 away from the side of the first pipe section 21 is smaller than the vertical height of the connection between the first pipe section 21 and the vertical pipe 11; so that when the ballast water height in the ballast tank is higher than the height of the horizontal pipe 12, the ballast water will not enter the auxiliary air pipe 2 through the connection between the first pipe section 21 and the vertical pipe 11, so as to prevent the airway in the auxiliary air pipe 2 from being blocked, ensure the ventilation function of the auxiliary air pipe 2, and then realize the full tank state of the ballast tank, and ensure the loading capacity of the ballast tank.

[0048] In a specific embodiment, a third pipe section 23 with an upward port is connected to the side of the second pipe section 22 away from the first pipe section 21, and the height of the pipe opening of the third pipe section 23 is higher than the height of the ballast water in the ballast tank when the ship has a maximum tilt angle. The tilt direction of the maximum tilt angle is opposite to the direction of the setting position of the third pipe section 23 in the ballast tank, which can ensure that ventilation can still be performed through the auxiliary ventilation pipe 2 when the ship is tilted. For example, Figure 1-3 In the middle ballast tank 6, double air vents are provided on the left and right sides. When the hull tilts to the right, Figure 1 , Figure 3 The height of the pipe opening of the third pipe section 23 arranged on the left side of the middle ballast tank 6 will be higher than the water level of the ballast water in the ballast tank; when the ballast tank is full, the ballast water level in the tank is equal to the height of the pipe opening of the third pipe section 23; the third pipe section 23 can ensure that the pipe opening of the third pipe section 23 (auxiliary vent pipe 2) can be as close to the inner side of the bottom deck 4 as possible, and the air cavity space can be reduced to the greatest extent, so that the ballast water in the ballast tank can rise to the full tank height, and give full play to the ballast function of the ballast tank;

[0049] When it is necessary to lower the water level and drain the water, after the ballast water level in the ballast tank is lowered, since the third pipe section 23 is set at an angle to the second pipe section 22, the second pipe section 22 is set horizontally and the third pipe section 23 is set vertically, ballast water will gather at the bottom of the auxiliary air pipe 2 at this time. When the liquid level rises again and the height is higher than the horizontal pipe 12, as the liquid level gradually increases, the gas pressure at the top of the liquid level will press the ballast water in the auxiliary air pipe 2 into the main air pipe 1 through the connection between the auxiliary air pipe 2 and the vertical pipe 11 and discharge it back into the ballast tank, so that the ballast water in the auxiliary air pipe 2 is completely discharged, ensuring that the auxiliary air pipe 2 is ventilated unobstructed, that is, ensuring that the auxiliary air pipe 2 can continue to play its venting function, thereby discharging the gas in the ballast tank to the greatest extent, and finally achieving the full liquid level in the ballast tank, by completely discharging the ballast water in the auxiliary air pipe 2, the ventilation in the ballast tank is ensured to be unobstructed, and the occurrence of a tank explosion accident due to water accumulation is avoided.

[0050] In a specific embodiment, the inner diameter of the auxiliary air pipe 2 is smaller than the inner diameter of the main air pipe 1, so as to ensure that after ballast water accumulates in the auxiliary air pipe 2, when the ballast tank is refilled with water, the pressure in the auxiliary air pipe 2 can be increased by the gas on the top of the tank during the rising process of the ballast water in the ballast tank, so that the pressure in the auxiliary air pipe 2 is greater than the pressure in the main air pipe 1, so that the accumulated water in the auxiliary air pipe 2 can be completely discharged into the main air pipe 1 during the rising process of the ballast water level, and finally enter the ballast tank, thereby ensuring the air permeability of the auxiliary air pipe and further ensuring the maximum loading capacity of the ballast tank.

[0051] Example 2

[0052] like Figure 4 The ballast tank provided with the ballast tank double air pipe provided in the present embodiment is shown, the ballast tank comprises a left ballast tank 5, a middle ballast tank 6 and a right ballast tank 7 which are arranged adjacently; the left ballast tank 5 and the right ballast tank 7 are both provided with a single air pipe 9 and a double air pipe formed by a main air pipe 1 and an auxiliary air pipe 2, the single air pipe 9 and the double air pipes are respectively arranged at diagonal positions in the ballast tank; the top of the single air pipe 9 is arranged on the top deck 3 and communicated with the external atmosphere, and the bottom of the single air pipe 9 is arranged above the left ballast tank and the right ballast tank; at least two double air pipes are arranged at diagonal positions in the middle ballast tank 6; the single air pipe is a straight air pipe, and two air pipes are respectively arranged in each cabin, such as Figure 1 and Figure 2 As shown, a double air pipe is respectively provided at the left front end and the right rear end of the middle ballast tank, a single air pipe is provided at the left front end of the left ballast tank 5, a double air pipe is provided at the right rear end of the left ballast tank 5, a double air pipe is provided at the left front end of the right ballast tank 7, and a single air pipe is provided at the right rear end of the right ballast tank 7. Therefore, it is ensured that air pipes are provided at the diagonals of each ballast tank, that is, it is ensured that air pipes are provided at the front end, left end, rear end and right end of each ballast tank. Therefore, the gas in the ballast tank can be discharged without dead angles, thereby ensuring the ventilation function of the ballast tank, achieving the full tank liquid level, and ensuring the maximum loading capacity.

[0053] In a specific embodiment, an air pipe head 8 is provided at one end of the single air pipe 9 and the riser 11 away from the ballast tank, and the top of the single air pipe and the riser 11 passes through the top deck 3 and is connected to the air pipe head 8 to achieve communication between the ballast tank and the atmosphere.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A ballast tank double vent pipe, characterized in that: It comprises a main air permeable tube (1) and an auxiliary air permeable tube (2); One end of the main air vent pipe (1) is arranged on the top deck (3) of the side ballast tank and communicates with the outside atmosphere, and the other end extends transversely to the inner edge of the ballast tank and is spaced apart from the bottom deck (4); One end of the auxiliary air pipe (2) is connected to the main air pipe (1), and the other end extends transversely to the edge of the ballast tank. The distance between the auxiliary air pipe (2) and the bottom deck (4) is smaller than the distance between the main air pipe (1) and the bottom deck (4). The vertical height of the connection between the auxiliary air pipe (2) and the main air pipe (1) is higher than the vertical height of one end of the auxiliary air pipe (2) close to the bottom deck (4).

2. A ballast tank double-vent pipe according to claim 1, characterized in that: The main ventilation pipe (1) comprises a vertically arranged standpipe (11) and a horizontally arranged cross pipe (12); The top of the vertical pipe (11) is arranged on the top deck (3) of the side ballast tank and is connected to the atmosphere outside the ballast tank. One end of the horizontal pipe (12) is connected to the bottom of the vertical pipe (11). The other end of the horizontal pipe (12) is arranged at the corner of the ballast tank.

3. A ballast tank double-vent pipe according to claim 2, characterized in that: The auxiliary air vent pipe (2) comprises a first pipe section (21) and a second pipe section (22) connected to the first pipe section (21); an end of the first pipe section (21) away from the second pipe section (22) is connected to the riser (11) of the main air vent pipe (1), and an end of the second pipe section (22) away from the first pipe section (21) is close to the lower side of the bottom deck (4) and is arranged at the corner of the ballast tank; The vertical heights of the first pipe section (21) and the second pipe section (22) are both higher than the vertical height of the horizontal pipe (12); The vertical height of the port of the second pipe section (22) away from the side of the first pipe section (21) is smaller than the vertical height of the connection between the first pipe section (21) and the riser (11).

4. A ballast tank double-vent pipe according to claim 3, characterized in that: A third pipe section (23) with an upwardly facing port is connected to a side of the second pipe section (22) away from the first pipe section (21); the port height of the third pipe section (23) is higher than the height of the ballast water in the ballast tank when the ship has a maximum tilt angle; the tilt direction of the maximum tilt angle is opposite to the direction of the third pipe section (23) at the location where the third pipe section (23) is arranged in the ballast tank.

5. The ballast tank double-vent pipe according to claim 1, characterized in that: The inner diameter of the auxiliary air permeable tube (2) is smaller than the inner diameter of the main air permeable tube (1).

6. A ballast tank provided with the ballast tank double vent pipe according to claim 1, characterized in that: The ballast tank comprises a left ballast tank (5), a middle ballast tank (6) and a right ballast tank (7) which are arranged adjacent to each other; a single air permeable pipe (9) and a double air permeable pipe formed by a main air permeable pipe (1) and an auxiliary air permeable pipe (2) are arranged in the left ballast tank (5) and the right ballast tank (7); the single air permeable pipe (9) and the double air permeable pipe are arranged at opposite corners in the ballast tank respectively; the top of the single air permeable pipe (9) is arranged on the top deck (3) and communicated with the external atmosphere, and the bottom of the single air permeable pipe (9) is arranged above the left ballast tank (5) and the right ballast tank (7); At least two double air permeable pipes are provided at diagonal locations inside the intermediate ballast tank (6).

7. A ballast tank according to claim 6, characterized in that: An air pipe head (8) is provided at one end of the single air permeable pipe (9) and the standpipe (11) away from the ballast tank.

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